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Document and Entity Information - shares	6 Months Ended
Document and Entity Information - shares	Jun. 30, 2017	Jul. 18, 2017
Document and Entity Information [Abstract]
Entity Registrant Name	BANK OF HAWAII CORP
Entity Central Index Key	0000046195
Document Type	10-Q
Document Period End Date	Jun. 30, 2017
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Entity Current Reporting Status	Yes
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		42,623,928
Document Fiscal Year Focus	2017
Document Fiscal Period Focus	Q2

Consolidated Statements of Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Interest Income
Interest and Fees on Loans and Leases	$ 90,909	$ 82,323	$ 178,846	$ 163,218
Income on Investment Securities
Available-for-Sale	11,835	10,521	22,919	21,335
Held-to-Maturity	19,918	20,168	39,624	40,559
Deposits	2	2	7	6
Funds Sold	696	618	1,586	1,371
Other	208	153	438	365
Total Interest Income	123,568	113,785	243,420	226,854
Interest Expense
Deposits	4,998	3,081	8,689	5,967
Securities Sold Under Agreements to Repurchase	5,079	6,134	10,264	12,287
Funds Purchased	39	3	42	6
Short-term Borrowings	64	0	64	0
Other Debt	1,109	1,017	2,210	2,020
Total Interest Expense	11,289	10,235	21,269	20,280
Net Interest Income	112,279	103,550	222,151	206,574
Provision for Credit Losses	4,250	1,000	8,650	(1,000)
Net Interest Income After Provision for Credit Losses	108,029	102,550	213,501	207,574
Noninterest Income
Trust and Asset Management	11,796	12,707	23,275	23,963
Mortgage Banking	3,819	4,088	7,119	7,277
Service Charges on Deposit Accounts	8,009	8,150	16,334	16,593
Fees, Exchange, and Other Service Charges	13,965	13,978	27,297	27,422
Investment Securities Gains (Losses), Net	(520)	(312)	11,613	10,868
Annuity and Insurance	2,161	2,006	4,156	3,907
Bank-Owned Life Insurance	1,550	1,551	3,047	3,099
Other	4,456	4,351	8,311	9,597
Total Noninterest Income	45,236	46,519	101,152	102,726
Noninterest Expense
Salaries and Benefits	50,113	50,289	101,715	100,803
Net Occupancy	8,131	7,158	16,299	14,161
Net Equipment	5,706	5,065	11,207	10,474
Data Processing	3,881	3,972	7,291	7,923
Professional Fees	2,592	2,047	5,371	4,686
FDIC Insurance	2,097	2,144	4,306	4,496
Other	15,669	15,396	30,568	30,914
Total Noninterest Expense	88,189	86,071	176,757	173,457
Income Before Provision for Income Taxes	65,076	62,998	137,896	136,843
Provision for Income Taxes	20,414	18,753	42,058	42,388
Net Income	$ 44,662	$ 44,245	$ 95,838	$ 94,455
Basic Earnings Per Share (in dollars per share)	$ 1.05	$ 1.04	$ 2.26	$ 2.21
Diluted Earnings Per Share (in dollars per share)	1.05	1.03	2.24	2.19
Dividends Declared Per Share (in dollars per share)	$ 0.50	$ 0.48	$ 1.00	$ 0.93
Basic Weighted Average Shares (in shares)	42,353,976	42,729,731	42,379,730	42,825,369
Diluted Weighted Average Shares (in shares)	42,658,885	42,942,960	42,704,010	43,033,199

Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Statement of Comprehensive Income [Abstract]
Net Income	$ 44,662	$ 44,245	$ 95,838	$ 94,455
Other Comprehensive Income, Net of Tax:
Net Unrealized Gains on Investment Securities	3,106	5,157	8,000	13,851
Defined Benefit Plans	147	141	293	282
Total Other Comprehensive Income	3,253	5,298	8,293	14,133
Comprehensive Income	$ 47,915	$ 49,543	$ 104,131	$ 108,588

Consolidated Statements of Condition (Unaudited) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Assets
Interest-Bearing Deposits in Other Banks	$ 3,913	$ 3,187
Funds Sold	742,221	707,343
Investment Securities
Available-for-Sale	2,316,728	2,186,041
Held-to-Maturity (Fair Value of $3,785,641 and $3,827,527)	3,782,702	3,832,997
Loans Held for Sale	20,354	62,499
Loans and Leases	9,387,613	8,949,785
Allowance for Loan and Lease Losses	(106,353)	(104,273)
Net Loans and Leases	9,281,260	8,845,512
Total Earning Assets	16,147,178	15,637,579
Cash and Due From Banks	128,093	169,077
Premises and Equipment, Net	119,569	113,505
Accrued Interest Receivable	46,595	46,444
Foreclosed Real Estate	1,991	1,686
Mortgage Servicing Rights	24,471	23,663
Goodwill	31,517	31,517
Bank-Owned Life Insurance	277,235	274,188
Other Assets	204,643	194,708
Total Assets	16,981,292	16,492,367
Deposits
Noninterest-Bearing Demand	4,706,962	4,772,727
Interest-Bearing Demand	3,029,549	2,934,107
Savings	5,364,191	5,395,699
Time	1,683,947	1,217,707
Total Deposits	14,784,649	14,320,240
Funds Purchased	0	9,616
Securities Sold Under Agreements to Repurchase	505,292	523,378
Other Debt	267,904	267,938
Retirement Benefits Payable	48,346	48,451
Accrued Interest Payable	5,105	5,334
Taxes Payable and Deferred Taxes	31,444	21,674
Other Liabilities	124,795	134,199
Total Liabilities	15,767,535	15,330,830
Shareholders’ Equity
Common Stock ($.01 par value; authorized 500,000,000 shares; issued / outstanding: June 30, 2017 - 57,972,647 / 42,655,954 and December 31, 2016 - 57,856,672 / 42,635,978)	576	576
Capital Surplus	556,409	551,628
Accumulated Other Comprehensive Loss	(25,613)	(33,906)
Retained Earnings	1,468,328	1,415,440
Treasury Stock, at Cost (Shares: June 30, 2017 - 15,316,693 and December 31, 2016 - 15,220,694)	(785,943)	(772,201)
Total Shareholders’ Equity	1,213,757	1,161,537
Total Liabilities and Shareholders’ Equity	$ 16,981,292	$ 16,492,367

Consolidated Statements of Condition (Unaudited) (Parenthetical) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Statement of Financial Position [Abstract]
Held-to-Maturity: Fair Value	$ 3,785,641	$ 3,827,527
Common Stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common Stock, authorized shares	500,000,000	500,000,000
Common Stock, issued shares	57,972,647	57,856,672
Common Stock, outstanding shares	42,655,954	42,635,978
Treasury Stock, Shares	15,316,693	15,220,694

Consolidated Statements of Shareholders' Equity (Unaudited) - USD ($) $ in Thousands	Total	Common Stock	Capital Surplus	Accumulated Other Comprehensive Income (Loss)	Retained Earnings	Treasury Stock
Balance at Beginning of Period at Dec. 31, 2015	$ 1,116,260	$ 575	$ 542,041	$ (23,557)	$ 1,316,260	$ (719,059)
Beginning Balance (in shares) at Dec. 31, 2015		43,282,153
Increase (decrease) in shareholders' equity
Net Income	94,455				94,455
Other Comprehensive Income	14,133			14,133
Share-Based Compensation	3,314		3,314
Common Stock Issued under Purchase and Equity Compensation Plans and Related Tax Benefits	6,197	$ 1	1,573		(277)	4,900
Common Stock Issued under Purchase and Equity Compensation Plans and Related Tax Benefits (in shares)		201,445
Common Stock Repurchased	(37,010)					(37,010)
Common Stock Repurchased (in shares)		(567,435)
Cash Dividends Declared ($1.00 per share)	(40,130)				(40,130)
Balance at End of Period at Jun. 30, 2016	1,157,219	$ 576	546,928	(9,424)	1,370,308	(751,169)
Ending Balance (in shares) at Jun. 30, 2016		42,916,163
Balance at Beginning of Period at Mar. 31, 2016				(14,722)
Increase (decrease) in shareholders' equity
Net Income	44,245
Other Comprehensive Income	5,298			5,298
Balance at End of Period at Jun. 30, 2016	1,157,219	$ 576	546,928	(9,424)	1,370,308	(751,169)
Ending Balance (in shares) at Jun. 30, 2016		42,916,163
Balance at Beginning of Period at Dec. 31, 2016	$ 1,161,537	$ 576	551,628	(33,906)	1,415,440	(772,201)
Beginning Balance (in shares) at Dec. 31, 2016	42,635,978	42,635,978
Increase (decrease) in shareholders' equity
Net Income	$ 95,838				95,838
Other Comprehensive Income	8,293			8,293
Share-Based Compensation	3,726		3,726
Common Stock Issued under Purchase and Equity Compensation Plans and Related Tax Benefits	8,438	$ 0	1,055		(162)	7,545
Common Stock Issued under Purchase and Equity Compensation Plans and Related Tax Benefits (in shares)		275,605
Common Stock Repurchased	(21,287)					(21,287)
Common Stock Repurchased (in shares)		(255,629)
Cash Dividends Declared ($1.00 per share)	(42,788)				(42,788)
Balance at End of Period at Jun. 30, 2017	$ 1,213,757	$ 576	556,409	(25,613)	1,468,328	(785,943)
Ending Balance (in shares) at Jun. 30, 2017	42,655,954	42,655,954
Balance at Beginning of Period at Mar. 31, 2017				(28,866)
Increase (decrease) in shareholders' equity
Net Income	$ 44,662
Other Comprehensive Income	3,253			3,253
Balance at End of Period at Jun. 30, 2017	$ 1,213,757	$ 576	$ 556,409	$ (25,613)	$ 1,468,328	$ (785,943)
Ending Balance (in shares) at Jun. 30, 2017	42,655,954	42,655,954

Consolidated Statements of Shareholders' Equity (Unaudited) (Parenthetical) - $ / shares	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Statement of Stockholders' Equity [Abstract]
Dividends Declared Per Share (in dollars per share)	$ 0.50	$ 0.48	$ 1.00	$ 0.93

Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Operating Activities
Net Income	$ 95,838	$ 94,455
Adjustments to Reconcile Net Income to Net Cash Provided by Operating Activities:
Provision for Credit Losses	8,650	(1,000)
Depreciation and Amortization	6,565	6,596
Amortization of Deferred Loan and Lease Fees	(535)	(773)
Amortization and Accretion of Premiums/Discounts on Investment Securities, Net	20,027	22,277
Share-Based Compensation	3,726	3,314
Benefit Plan Contributions	(741)	(655)
Deferred Income Taxes	3,635	(5,354)
Net Gains on Sales of Loans and Leases	(3,971)	(4,095)
Net Gains on Sales of Investment Securities	(11,613)	(10,868)
Proceeds from Sales of Loans Held for Sale	146,478	67,983
Originations of Loans Held for Sale	(150,414)	(84,660)
Net Tax Benefit from Share-Based Compensation	2,077	0
Excess Tax Benefits from Share-Based Compensation	0	(884)
Net Change in Other Assets and Other Liabilities	(21,803)	(11,956)
Net Cash Provided by Operating Activities	97,919	74,380
Investment Securities Available-for-Sale:
Proceeds from Prepayments and Maturities	191,564	166,334
Proceeds from Sales	11,613	11,094
Purchases	(320,170)	(197,696)
Investment Securities Held-to-Maturity:
Proceeds from Prepayments and Maturities	406,904	352,035
Purchases	(365,498)	(178,347)
Net Change in Loans and Leases	(508,529)	(548,977)
Proceeds from Sales of Loans	112,357	19,055
Premises and Equipment, Net	(12,629)	(5,229)
Net Cash Used in Investing Activities	(484,388)	(381,731)
Financing Activities
Net Change in Deposits	464,409	392,704
Net Change in Short-Term Borrowings	(27,702)	(42,072)
Proceeds from Long-Term Debt	0	75,000
Repayments of Long-Term Debt	0	(50,000)
Excess Tax Benefits from Share-Based Compensation	0	884
Proceeds from Issuance of Common Stock	8,457	5,304
Repurchase of Common Stock	(21,287)	(37,010)
Cash Dividends Paid	(42,788)	(40,130)
Net Cash Provided by Financing Activities	381,089	304,680
Net Change in Cash and Cash Equivalents	(5,380)	(2,671)
Cash and Cash Equivalents at End of Period	874,227	753,050
Cash and Cash Equivalents at Beginning of Period	879,607	755,721
Supplemental Information
Cash Paid for Interest	21,498	19,469
Cash Paid for Income Taxes	32,058	42,229
Non-Cash Investing Activities:
Transfer from Loans to Foreclosed Real Estate	2,207	1,040
Transfers from Loans to Loans Held for Sale	$ 62,727	$ 101,282

Summary of Significant Accounting Policies	6 Months Ended
Summary of Significant Accounting Policies	Jun. 30, 2017
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	Summary of Significant Accounting Policies Basis of Presentation Bank of Hawaii Corporation (the “Parent”) is a Delaware corporation and a bank holding company headquartered in Honolulu, Hawaii. Bank of Hawaii Corporation and its subsidiaries (collectively, the “Company”) provide a broad range of financial products and services to customers in Hawaii, Guam, and other Pacific Islands. The accompanying consolidated financial statements include the accounts of the Parent and its subsidiaries. The Parent’s principal operating subsidiary is Bank of Hawaii (the “Bank”). The consolidated financial statements in this report have not been audited by an independent registered public accounting firm, but in the opinion of management, reflect all adjustments necessary for a fair presentation of the results for the interim periods. All such adjustments are of a normal recurring nature. Intercompany accounts and transactions have been eliminated in consolidation. Certain prior period information has been reclassified to conform to the current period presentation. Operating results for the interim periods disclosed herein are not necessarily indicative of the results that may be expected for the full fiscal year or for any future period. The accompanying consolidated financial statements have been prepared in accordance with U.S. generally accepted accounting principles (“GAAP”) for interim financial information and with the instructions to Form 10-Q and Rule 10-01 of Regulation S-X. Accordingly, they do not include all of the information and accompanying notes required by GAAP for complete financial statements and should be read in conjunction with the audited consolidated financial statements and related notes included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2016. Use of Estimates in the Preparation of Financial Statements The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts in the financial statements and accompanying notes. Actual results may differ from those estimates and such differences could be material to the financial statements. Variable Interest Entities Variable interests are defined as contractual ownership or other interests in an entity that change with fluctuations in an entity’s net asset value. The primary beneficiary consolidates the variable interest entity (“VIE”). The primary beneficiary is defined as the enterprise that has both the power to direct the activities of the VIE that most significantly impact the entity’s economic performance and the obligation to absorb losses or the right to receive benefits that could be significant to the VIE. The Company has limited partnership interests in several low-income housing partnerships. These partnerships provide funds for the construction and operation of apartment complexes that provide affordable housing to lower-income households. If these developments successfully attract a specified percentage of residents falling in that lower-income range, state and/or federal income tax credits are made available to the partners. The tax credits are generally recognized over 10 years. In order to continue receiving the tax credits each year over the life of the partnership, the low-income residency targets must be maintained. Prior to January 1, 2015, the Company utilized the effective yield method whereby the Company recognized tax credits generally over 10 years and amortized the initial cost of the investment to provide a constant effective yield over the period that tax credits are allocated to the Company. On January 1, 2015, the Company adopted ASU No. 2014-01, “Accounting for Investments in Qualified Affordable Housing Projects” prospectively for new investments. ASU No. 2014-01 permits reporting entities to make an accounting policy election to account for their investments in qualified affordable housing projects using the proportional amortization method if certain conditions are met. As permitted by ASU No. 2014-01, the Company elected to continue to utilize the effective yield method for investments made prior to January 1, 2015. Unfunded commitments to fund these low-income housing partnerships were $18.1 million and $16.2 million as of June 30, 2017 and December 31, 2016, respectively. These unfunded commitments are unconditional and legally binding and are recorded in other liabilities in the consolidated statements of condition. See Note 5 Affordable Housing Projects Tax Credit Partnerships for more information. The Company also has limited partnership interests in solar energy tax credit partnership investments. These partnerships develop, build, own and operate solar renewable energy projects. Over the course of these investments, the Company expects to receive federal and state tax credits, tax-related benefits, and excess cash available for distribution, if any. The Company may be called to sell its interest in the limited partnerships through a call option once all investment tax credits have been recognized. Tax benefits associated with these investments are generally recognized over six years. These entities meet the definition of a VIE; however, the Company is not the primary beneficiary of the entities as the general partner has both the power to direct the activities that most significantly impact the economic performance of the entities and the obligation to absorb losses or the right to receive benefits that could be significant to the entities. While the partnership agreements allow the limited partners, through a majority vote, to remove the general partner, this right is not deemed to be substantive as the general partner can only be removed for cause. The investments in these entities are initially recorded at cost, which approximates the maximum exposure to loss as a result of the Company’s involvement with these unconsolidated entities. The balance of the Company’s investments in these entities was $77.5 million and $78.9 million as of June 30, 2017 and December 31, 2016, respectively, and is included in other assets in the consolidated statements of condition. Correction of an Immaterial Error to the Financial Statements The Company determined during the fourth quarter of 2016 the proceeds from the sale of residential mortgage loans transferred from portfolio to held for sale were incorrectly reported on the consolidated statements of cash flows. The consolidated statement of cash flows for the six months ended June 30, 2016 was adjusted to decrease the originations of loans held for sale by $97.3 million, decrease the proceeds from sales of loans held for sale by $19.1 million, and decrease the net change in other assets and other liabilities by $0.1 million. The net result was a $78.1 million increase to the net cash provided by operating activities. In addition, the net change in loans and leases was increased by $97.2 million, and a new line item, proceeds from sales of loans, was inserted for $19.1 million, resulting in a $78.1 million increase to net cash used in investing activities. Lastly, listed in the Supplemental Information section as a non-cash investing activity, transfers from loans to loans held for sale was decreased by $2.3 million. These corrections did not impact the consolidated statements of income or the consolidated statements of condition. The Company evaluated the effect of the incorrect presentation of the consolidated statements of cash flows, both qualitatively and quantitatively, and concluded it did not materially misstate the Company’s previously issued financial statements. Accounting Standards Adopted in 2017 In March 2016, the FASB issued ASU No. 2016-09, “Improvements to Employee Share-Based Payment Accounting.” This ASU includes provisions intended to simplify various aspects related to how share-based payments are accounted for and presented in the financial statements. Some of the key provisions of this new ASU include: (1) companies will no longer record excess tax benefits and certain tax deficiencies in additional paid-in capital (“APIC”). Instead, they will record all excess tax benefits and tax deficiencies as income tax expense or benefit in the income statement, and APIC pools will be eliminated. The guidance also eliminates the requirement that excess tax benefits be realized before companies can recognize them. In addition, the guidance requires companies to present excess tax benefits as an operating activity on the statement of cash flows rather than as a financing activity; (2) increase the amount an employer can withhold to cover income taxes on awards and still qualify for the exception to liability classification for shares used to satisfy the employer’s statutory income tax withholding obligation. The new guidance will also require an employer to classify the cash paid to a tax authority when shares are withheld to satisfy its statutory income tax withholding obligation as a financing activity on its statement of cash flows (current guidance did not specify how these cash flows should be classified); and (3) permit companies to make an accounting policy election for the impact of forfeitures on the recognition of expense for share-based payment awards. Forfeitures can be estimated, as required today, or recognized when they occur. ASU No. 2016-09 is effective for interim and annual reporting periods beginning after December 15, 2016. The Company adopted ASU No. 2016-09 on January 1, 2017 and elected to recognize forfeitures as they occur. As allowed by the ASU, the Company’s adoption was prospective, therefore, prior periods have not been adjusted. The adoption of ASU No. 2016-09 could result in increased volatility to reported income tax expense related to excess tax benefits and tax deficiencies for employee share-based transactions, however, the actual amounts recognized in income tax expense will be dependent on the amount of employee share-based transactions and the stock price at the time of vesting or exercise. For the first six months of 2017, the adoption of ASU No. 2016-09 resulted in a decrease to the provision for income taxes primarily due to the tax benefit from the exercise of stock options and the vesting of restricted stock. Accounting Standards Pending Adoption In May 2014, the FASB and the International Accounting Standards Board (the “IASB”) jointly issued a comprehensive new revenue recognition standard that will supersede nearly all existing revenue recognition guidance under GAAP and International Financial Reporting Standards (“IFRS”). Previous revenue recognition guidance in GAAP consisted of broad revenue recognition concepts together with numerous revenue requirements for particular industries or transactions, which sometimes resulted in different accounting for economically similar transactions. In contrast, IFRS provided limited revenue recognition guidance and, consequently, could be difficult to apply to complex transactions. Accordingly, the FASB and the IASB initiated a joint project to clarify the principles for recognizing revenue and to develop a common revenue standard for U.S. GAAP and IFRS that would: (1) remove inconsistencies and weaknesses in revenue requirements; (2) provide a more robust framework for addressing revenue issues; (3) improve comparability of revenue recognition practices across entities, industries, jurisdictions, and capital markets; (4) provide more useful information to users of financial statements through improved disclosure requirements; and (5) simplify the preparation of financial statements by reducing the number of requirements to which an entity must refer. To meet those objectives, the FASB issued ASU No. 2014-09, “Revenue from Contracts with Customers.” The standard’s core principle is that a company will recognize revenue when it transfers promised goods or services to customers in an amount that reflects the consideration to which the company expects to be entitled in exchange for those goods or services. In doing so, companies generally will be required to use more judgment and make more estimates than under current guidance. These may include identifying performance obligations in the contract, estimating the amount of variable consideration to include in the transaction price and allocating the transaction price to each separate performance obligation. The standard was initially effective for public entities for interim and annual reporting periods beginning after December 15, 2016; early adoption was not permitted. However, in August 2015, the FASB issued ASU No. 2015-14, “Revenue from Contracts with Customers - Deferral of the Effective Date” which deferred the effective date by one year (i.e., interim and annual reporting periods beginning after December 15, 2017). For financial reporting purposes, the standard allows for either full retrospective adoption, meaning the standard is applied to all of the periods presented, or modified retrospective adoption, meaning the standard is applied only to the most current period presented in the financial statements with the cumulative effect of initially applying the standard recognized at the date of initial application. In addition, the FASB has begun to issue targeted updates to clarify specific implementation issues of ASU 2014-09. These updates include ASU No. 2016-08, “Principal versus Agent Considerations (Reporting Revenue Gross versus Net),” ASU No. 2016-10, “Identifying Performance Obligations and Licensing,” ASU No. 2016-12, “Narrow-Scope Improvements and Practical Expedients,” and ASU No. 2016-20 “Technical Corrections and Improvements to Topic 606, Revenue from Contracts with Customers.” Since the guidance does not apply to revenue associated with financial instruments, including loans and securities that are accounted for under other GAAP, the Company does not expect the new guidance to have a material impact on revenue most closely associated with financial instruments, including interest income and expense. The Company is continuing its overall assessment of revenue streams and reviewing contracts potentially affected by the ASU including trust and asset management fees, deposit related fees, interchange fees, and merchant income, to determine the potential impact the new guidance is expected to have on the Company’s Consolidated Financial Statements. In addition, the Company continues to follow certain implementation issues relevant to the banking industry which are still pending resolution. The Company plans to adopt ASU No. 2014-09 on January 1, 2018 utilizing the modified retrospective approach. In January 2016, the FASB issued ASU No. 2016-01, “Recognition and Measurement of Financial Assets and Financial Liabilities.” This ASU addresses certain aspects of recognition, measurement, presentation, and disclosure of financial instruments by making targeted improvements to GAAP as follows: (1) require equity investments (except those accounted for under the equity method of accounting or those that result in consolidation of the investee) to be measured at fair value with changes in fair value recognized in net income. However, an entity may choose to measure equity investments that do not have readily determinable fair values at cost minus impairment, if any, plus or minus changes resulting from observable price changes in orderly transactions for the identical or a similar investment of the same issuer; (2) simplify the impairment assessment of equity investments without readily determinable fair values by requiring a qualitative assessment to identify impairment. When a qualitative assessment indicates that impairment exists, an entity is required to measure the investment at fair value; (3) eliminate the requirement to disclose the fair value of financial instruments measured at amortized cost for entities that are not public business entities; (4) eliminate the requirement for public business entities to disclose the method(s) and significant assumptions used to estimate the fair value that is required to be disclosed for financial instruments measured at amortized cost on the balance sheet; (5) require public business entities to use the exit price notion when measuring the fair value of financial instruments for disclosure purposes; (6) require an entity to present separately in other comprehensive income the portion of the total change in the fair value of a liability resulting from a change in the instrument-specific credit risk when the entity has elected to measure the liability at fair value in accordance with the fair value option for financial instruments; (7) require separate presentation of financial assets and financial liabilities by measurement category and form of financial asset (that is, securities or loans and receivables) on the balance sheet or the accompanying notes to the financial statements; and (8) clarify that an entity should evaluate the need for a valuation allowance on a deferred tax asset related to available-for-sale securities in combination with the entity’s other deferred tax assets. ASU No. 2016-01 is effective for interim and annual reporting periods beginning after December 15, 2017. Early application is permitted as of the beginning of the fiscal year of adoption only for provisions (3) and (6) above. Early adoption of the other provisions mentioned above is not permitted. The Company has performed a preliminary evaluation of the provisions of ASU No. 2016-01. Based on this evaluation, the Company has determined that ASU No. 2016-01 is not expected to have a material impact on the Company’s Consolidated Financial Statements; however, the Company will continue to closely monitor developments and additional guidance. In February 2016, the FASB issued ASU No. 2016-02, “Leases.” Under the new guidance, lessees will be required to recognize the following for all leases (with the exception of short-term leases): 1) a lease liability, which is the present value of a lessee’s obligation to make lease payments, and 2) a right-of-use asset, which is an asset that represents the lessee’s right to use, or control the use of, a specified asset for the lease term. Lessor accounting under the new guidance remains largely unchanged as it is substantially equivalent to existing guidance for sales-type leases, direct financing leases, and operating leases. Leveraged leases have been eliminated, although lessors can continue to account for existing leveraged leases using the current accounting guidance. Other limited changes were made to align lessor accounting with the lessee accounting model and the new revenue recognition standard. All entities will classify leases to determine how to recognize lease-related revenue and expense. Quantitative and qualitative disclosures will be required by lessees and lessors to meet the objective of enabling users of financial statements to assess the amount, timing, and uncertainty of cash flows arising from leases. The intention is to require enough information to supplement the amounts recorded in the financial statements so that users can understand more about the nature of an entity’s leasing activities. ASU No. 2016-02 is effective for interim and annual reporting periods beginning after December 15, 2018; early adoption is permitted. All entities are required to use a modified retrospective approach for leases that exist or are entered into after the beginning of the earliest comparative period in the financial statements. They have the option to use certain relief; full retrospective application is prohibited. The Company has several lease agreements, such as branch locations, which are currently considered operating leases, and therefore, not recognized on the Company’s consolidated statements of condition. The Company expects the new guidance will require these lease agreements to now be recognized on the consolidated statements of condition as a right-of-use asset and a corresponding lease liability. Therefore, the Company’s preliminary evaluation indicates the provisions of ASU No. 2016-02 are expected to impact the Company’s consolidated statements of condition. However, the Company continues to evaluate the extent of potential impact the new guidance will have on the Company’s Consolidated Financial Statements. In June 2016, the FASB issued ASU No. 2016-13, “Measurement of Credit Losses on Financial Instruments.” This ASU significantly changes how entities will measure credit losses for most financial assets and certain other instruments that aren’t measured at fair value through net income. In issuing the standard, the FASB is responding to criticism that today’s guidance delays recognition of credit losses. The standard will replace today’s “incurred loss” approach with an “expected loss” model. The new model, referred to as the current expected credit loss (“CECL”) model, will apply to: (1) financial assets subject to credit losses and measured at amortized cost, and (2) certain off-balance sheet credit exposures. This includes, but is not limited to, loans, leases, held-to-maturity securities, loan commitments, and financial guarantees. The CECL model does not apply to available-for-sale (“AFS”) debt securities. For AFS debt securities with unrealized losses, entities will measure credit losses in a manner similar to what they do today, except that the losses will be recognized as allowances rather than reductions in the amortized cost of the securities. As a result, entities will recognize improvements to estimated credit losses immediately in earnings rather than as interest income over time, as they do today. The ASU also simplifies the accounting model for purchased credit-impaired debt securities and loans. ASU 2016-13 also expands the disclosure requirements regarding an entity’s assumptions, models, and methods for estimating the allowance for loan and lease losses. In addition, entities will need to disclose the amortized cost balance for each class of financial asset by credit quality indicator, disaggregated by the year of origination. ASU No. 2016-13 is effective for interim and annual reporting periods beginning after December 15, 2019; early adoption is permitted for interim and annual reporting periods beginning after December 15, 2018. Entities will apply the standard’s provisions as a cumulative-effect adjustment to retained earnings as of the beginning of the first reporting period in which the guidance is effective (i.e., modified retrospective approach). The Company is continuing its implementation efforts through its Company-wide implementation team. This team has assigned roles and responsibilities, key tasks to complete, and a general timeline to be followed. The implementation team meets periodically to discuss the latest developments and ensure progress is being made. The team also keeps current on the latest news via webcasts, publications, conferences, and peer bank meetings. The Company’s preliminary evaluation indicates the provisions of ASU No. 2016-13 are expected to impact the Company’s Consolidated Financial Statements, in particular the level of the reserve for credit losses. However, the Company continues to evaluate the extent of the potential impact. In August 2016, the FASB issued ASU No. 2016-15, “Classification of Certain Cash Receipts and Cash Payments.” Current GAAP is unclear or does not include specific guidance on how to classify certain transactions in the statement of cash flows. This ASU is intended to reduce diversity in practice in how eight particular transactions are classified in the statement of cash flows. ASU No. 2016-15 is effective for interim and annual reporting periods beginning after December 15, 2017. Early adoption is permitted, provided that all of the amendments are adopted in the same period. Entities will be required to apply the guidance retrospectively. If it is impracticable to apply the guidance retrospectively for an issue, the amendments related to that issue would be applied prospectively. As this guidance only affects the classification within the statement of cash flows, ASU No. 2016-15 is not expected to have a material impact on the Company’s Consolidated Financial Statements. In January 2017, the FASB issued ASU No. 2017-04, “Simplifying the Test for Goodwill Impairment.” The guidance removes Step 2 of the goodwill impairment test, which requires a hypothetical purchase price allocation. Goodwill impairment will now be the amount by which a reporting unit’s carrying value exceeds its fair value, not to exceed the carrying amount of goodwill. All other goodwill impairment guidance will remain largely unchanged. ASU No. 2017-04 is effective for interim and annual reporting periods beginning after December 15, 2019, applied prospectively. Early adoption is permitted for any impairment tests performed after January 1, 2017. The Company expects to early adopt upon the next goodwill impairment test in 2017. ASU No. 2017-04 is not expected to have a material impact on the Company’s Consolidated Financial Statements. In March 2017, the FASB issued ASU No. 2017-07, “Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost.” Under the new guidance, employers will present the service cost component of the net periodic benefit cost in the same income statement line item (e.g., Salaries and Benefits) as other employee compensation costs arising from services rendered during the period. In addition, only the service cost component will be eligible for capitalization in assets. Employers will present the other components separately (e.g., Other Noninterest Expense) from the line item that includes the service cost. ASU No. 2017-07 is effective for interim and annual reporting periods beginning after December 15, 2017. Early adoption is permitted, however, the Company has decided not to early adopt. Employers will apply the guidance on the presentation of the components of net periodic benefit cost in the income statement retrospectively. The guidance limiting the capitalization of net periodic benefit cost in assets to the service cost component will be applied prospectively. The Company expects to utilize the ASU’s practical expedient allowing entities to estimate amounts for comparative periods using the information previously disclosed in their pension and other postretirement benefit plan footnote. ASU No. 2017-07 is not expected to have a material impact on the Company’s Consolidated Financial Statements. In March 2017, the FASB issued ASU No. 2017-08, “Premium Amortization on Purchased Callable Debt Securities.” This ASU shortens the amortization period for the premium on certain purchased callable debt securities to the earliest call date. Today, entities generally amortize the premium over the contractual life of the security. The new guidance does not change the accounting for purchased callable debt securities held at a discount; the discount continues to be amortized to maturity. ASU No. 2017-08 is effective for interim and annual reporting periods beginning after December 15, 2018; early adoption is permitted. The guidance calls for a modified retrospective transition approach under which a cumulative-effect adjustment will be made to retained earnings as of the beginning of the first reporting period in which the guidance is adopted. The Company is currently evaluating the provisions of ASU No. 2017-08 to determine the potential impact the new standard will have on the Company’s Consolidated Financial Statements. In May 2017, the FASB issued ASU No. 2017-09, “Stock Compensation, Scope of Modification Accounting.” This ASU clarifies when changes to the terms of conditions of a share-based payment award must be accounted for as modifications. Companies will apply the modification accounting guidance if the value, vesting conditions or classification of the award changes. The new guidance should reduce diversity in practice and result in fewer changes to the terms of an award being accounted for as modifications, as the guidance will allow companies to make certain non-substantive changes to awards without accounting for them as modifications. It does not change the accounting for modifications. ASU No. 2017-09 is effective for interim and annual reporting periods beginning after December 15, 2017; early adoption is permitted. ASU No. 2017-09 is not expected to have a material impact on the Company’s Consolidated Financial Statements.

Investment Securities

6 Months Ended

Jun. 30, 2017

Investments, Debt and Equity Securities [Abstract]

Investment Securities

The amortized cost, gross unrealized gains and losses, and fair value of the Company’s investment securities as of June 30, 2017 and December 31, 2016 were as follows:



(dollars in thousands)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
June 30, 2017
Available-for-Sale:
Debt Securities Issued by the U.S. Treasury and Government Agencies	$	430,208	$	3,732	$	(963	)	$	432,977
Debt Securities Issued by States and Political Subdivisions	650,075		17,905		(99		)	667,881
Debt Securities Issued by Corporations	268,022		138		(2,911		)	265,249
Mortgage-Backed Securities:
Residential - Government Agencies	262,834		3,858		(1,150		)	265,542
Residential - U.S. Government-Sponsored Enterprises	613,512		1,090		(4,701		)	609,901
Commercial - Government Agencies	77,757		—		(2,579		)	75,178
Total Mortgage-Backed Securities	954,103		4,948		(8,430		)	950,621
Total	$	2,302,408	$	26,723	$	(12,403	)	$	2,316,728
Held-to-Maturity:
Debt Securities Issued by the U.S. Treasury and Government Agencies	$	500,111	$	613	$	(886	)	$	499,838
Debt Securities Issued by States and Political Subdivisions	240,413		14,472		—			254,885
Debt Securities Issued by Corporations	127,666		405		(1,326		)	126,745
Mortgage-Backed Securities:
Residential - Government Agencies	1,928,530		15,726		(19,602		)	1,924,654
Residential - U.S. Government-Sponsored Enterprises	772,212		1,284		(7,144		)	766,352
Commercial - Government Agencies	213,770		2,213		(2,816		)	213,167
Total Mortgage-Backed Securities	2,914,512		19,223		(29,562		)	2,904,173
Total	$	3,782,702	$	34,713	$	(31,774	)	$	3,785,641

December 31, 2016
Available-for-Sale:
Debt Securities Issued by the U.S. Treasury and Government Agencies	$	407,478	$	2,531	$	(1,294	)	$	408,715
Debt Securities Issued by States and Political Subdivisions	662,231		11,455		(1,887		)	671,799
Debt Securities Issued by Corporations	273,044		5		(3,870		)	269,179
Mortgage-Backed Securities:
Residential - Government Agencies	240,412		4,577		(1,145		)	243,844
Residential - U.S. Government-Sponsored Enterprises	511,234		971		(5,218		)	506,987
Commercial - Government Agencies	89,544		—		(4,027		)	85,517
Total Mortgage-Backed Securities	841,190		5,548		(10,390		)	836,348
Total	$	2,183,943	$	19,539	$	(17,441	)	$	2,186,041
Held-to-Maturity:
Debt Securities Issued by the U.S. Treasury and Government Agencies	$	530,149	$	1,562	$	(771	)	$	530,940
Debt Securities Issued by States and Political Subdivisions	242,295		9,991		—			252,286
Debt Securities Issued by Corporations	135,620		416		(1,528		)	134,508
Mortgage-Backed Securities:
Residential - Government Agencies	1,940,076		20,567		(23,861		)	1,936,782
Residential - U.S. Government-Sponsored Enterprises	752,768		798		(10,919		)	742,647
Commercial - Government Agencies	232,089		940		(2,665		)	230,364
Total Mortgage-Backed Securities	2,924,933		22,305		(37,445		)	2,909,793
Total	$	3,832,997	$	34,274	$	(39,744	)	$	3,827,527

The table below presents an analysis of the contractual maturities of the Company’s investment securities as of June 30, 2017. Debt securities issued by government agencies (Small Business Administration securities) and mortgage-backed securities are disclosed separately in the table below as these investment securities may prepay prior to their scheduled contractual maturity dates.



(dollars in thousands)	Amortized Cost		Fair Value
Available-for-Sale:
Due in One Year or Less	$	86,725	$	86,878
Due After One Year Through Five Years	585,928		589,580
Due After Five Years Through Ten Years	214,366		223,309
Due After Ten Years	31,629		33,904
	918,648		933,671

Debt Securities Issued by Government Agencies	429,657		432,436
Mortgage-Backed Securities:
Residential - Government Agencies	262,834		265,542
Residential - U.S. Government-Sponsored Enterprises	613,512		609,901
Commercial - Government Agencies	77,757		75,178
Total Mortgage-Backed Securities	954,103		950,621
Total	$	2,302,408	$	2,316,728

Held-to-Maturity:
Due in One Year or Less	$	235,104	$	234,882
Due After One Year Through Five Years	335,763		338,517
Due After Five Years Through Ten Years	258,942		266,850
Due After Ten Years	38,381		41,219
	868,190		881,468
Mortgage-Backed Securities:
Residential - Government Agencies	1,928,530		1,924,654
Residential - U.S. Government-Sponsored Enterprises	772,212		766,352
Commercial - Government Agencies	213,770		213,167
Total Mortgage-Backed Securities	2,914,512		2,904,173
Total	$	3,782,702	$	3,785,641

Investment securities with carrying values of $2.7 billion and $2.4 billion as of June 30, 2017 and December 31, 2016, respectively, were pledged to secure deposits of governmental entities and securities sold under agreements to repurchase.

The table below presents the gains and losses from the sales of investment securities for the three and six months ended June 30, 2017 and 2016.



	Three Months Ended June 30,						Six Months Ended June 30,
(dollars in thousands)	2017			2016			2017			2016
Gross Gains on Sales of Investment Securities	$	—		$	—		$	12,467		$	11,355
Gross Losses on Sales of Investment Securities	(520		)	(312		)	(854		)	(487		)
Net Gains (Losses) on Sales of Investment Securities	$	(520	)	$	(312	)	$	11,613		$	10,868

The losses during the three and six months ended June 30, 2017 and 2016 were due to fees paid to the counterparties of our prior Visa Class B share sale transactions.

The Company’s investment securities in an unrealized loss position, segregated by continuous length of loss, were as follows:



	Less Than 12 Months					12 Months or Longer					Total
(dollars in thousands)	Fair Value		Gross Unrealized Losses			Fair Value		Gross Unrealized Losses			Fair Value		Gross Unrealized Losses
June 30, 2017
Available-for-Sale:
Debt Securities Issued by the U.S. Treasury and Government Agencies	$	42,325	$	(285	)	$	143,773	$	(678	)	$	186,098	$	(963	)
Debt Securities Issued by States and Political Subdivisions	49,521		(99		)	—		—			49,521		(99		)
Debt Securities Issued by Corporations	62,472		(555		)	162,638		(2,356		)	225,110		(2,911		)
Mortgage-Backed Securities:
Residential - Government Agencies	23,520		(56		)	13,814		(1,094		)	37,334		(1,150		)
Residential - U.S. Government-Sponsored Enterprises	420,189		(4,398		)	10,611		(303		)	430,800		(4,701		)
Commercial - Government Agencies	—		—			75,178		(2,579		)	75,178		(2,579		)
Total Mortgage-Backed Securities	443,709		(4,454		)	99,603		(3,976		)	543,312		(8,430		)
Total	$	598,027	$	(5,393	)	$	406,014	$	(7,010	)	$	1,004,041	$	(12,403	)
Held-to-Maturity:
Debt Securities Issued by the U.S. Treasury and Government Agencies	$	284,734	$	(886	)	$	—	$	—		$	284,734	$	(886	)
Debt Securities Issued by Corporations	65,356		(835		)	15,027		(491		)	80,383		(1,326		)
Mortgage-Backed Securities:
Residential - Government Agencies	856,028		(11,817		)	222,166		(7,785		)	1,078,194		(19,602		)
Residential - U.S. Government-Sponsored Enterprises	598,035		(7,144		)	—		—			598,035		(7,144		)
Commercial - Government Agencies	79,883		(2,748		)	10,561		(68		)	90,444		(2,816		)
Total Mortgage-Backed Securities	1,533,946		(21,709		)	232,727		(7,853		)	1,766,673		(29,562		)
Total	$	1,884,036	$	(23,430	)	$	247,754	$	(8,344	)	$	2,131,790	$	(31,774	)

December 31, 2016
Available-for-Sale:
Debt Securities Issued by the U.S. Treasury and Government Agencies	$	143,715	$	(562	)	$	89,211	$	(732	)	$	232,926	$	(1,294	)
Debt Securities Issued by States and Political Subdivisions	211,188		(1,873		)	6,725		(14		)	217,913		(1,887		)
Debt Securities Issued by Corporations	67,332		(714		)	196,838		(3,156		)	264,170		(3,870		)
Mortgage-Backed Securities:
Residential - Government Agencies	38,355		(89		)	11,185		(1,056		)	49,540		(1,145		)
Residential - U.S. Government-Sponsored Enterprises	397,385		(5,218		)	—		—			397,385		(5,218		)
Commercial - Government Agencies	5,097		(164		)	80,420		(3,863		)	85,517		(4,027		)
Total Mortgage-Backed Securities	440,837		(5,471		)	91,605		(4,919		)	532,442		(10,390		)
Total	$	863,072	$	(8,620	)	$	384,379	$	(8,821	)	$	1,247,451	$	(17,441	)
Held-to-Maturity:
Debt Securities Issued by the U.S. Treasury and Government Agencies	$	169,926	$	(771	)	$	—	$	—		$	169,926	$	(771	)
Debt Securities Issued by Corporations	69,601		(971		)	15,933		(557		)	85,534		(1,528		)
Mortgage-Backed Securities:
Residential - Government Agencies	835,227		(15,313		)	231,377		(8,548		)	1,066,604		(23,861		)
Residential - U.S. Government-Sponsored Enterprises	693,047		(10,919		)	—		—			693,047		(10,919		)
Commercial - Government Agencies	87,586		(2,597		)	18,653		(68		)	106,239		(2,665		)
Total Mortgage-Backed Securities	1,615,860		(28,829		)	250,030		(8,616		)	1,865,890		(37,445		)
Total	$	1,855,387	$	(30,571	)	$	265,963	$	(9,173	)	$	2,121,350	$	(39,744	)

The Company does not believe that the investment securities that were in an unrealized loss position as of June 30, 2017, which were comprised of 291 securities, represent an other-than-temporary impairment. Total gross unrealized losses were primarily attributable to changes in interest rates, relative to when the investment securities were purchased, and not due to the credit quality of the investment securities. As of June 30, 2017 and December 31, 2016, the gross unrealized losses reported for mortgage-backed securities were mostly related to investment securities issued by the Government National Mortgage Association. The Company does not intend to sell the investment securities that were in an unrealized loss position and it is not more likely than not that the Company will be required to sell the investment securities before recovery of their amortized cost basis, which may be at maturity.

Interest income from taxable and non-taxable investment securities for the three and six months ended June 30, 2017 and 2016 were as follows:



	Three Months Ended June 30,				Six Months Ended June 30,
(dollars in thousands)	2017		2016		2017		2016
Taxable	$	26,741	$	25,567	$	52,508	$	51,554
Non-Taxable	5,012		5,122		10,035		10,340
Total Interest Income from Investment Securities	$	31,753	$	30,689	$	62,543	$	61,894

As of June 30, 2017, included in the Company’s investment securities portfolio were debt securities issued by political subdivisions within the State of Hawaii of $528.3 million, representing 57% of the total fair value of the Company’s municipal debt securities. Of the entire Hawaii municipal bond portfolio, 94% were credit-rated Aa2 or better by Moody’s while the remaining Hawaii municipal bonds were credit-rated A2 or better by at least one nationally recognized statistical rating organization. Of the Company’s total Hawaii municipal bond holdings, 78% were general obligation issuances. As of June 30, 2017, there were no other holdings of municipal debt securities that were issued by a single state or political subdivision which comprised more than 10% of the total fair value of the Company’s municipal debt securities.

As of June 30, 2017 and December 31, 2016, the carrying value of the Company’s Federal Home Loan Bank of Des Moines stock and Federal Reserve Bank stock was as follows:



(dollars in thousands)	June 30, 2017		December 31, 2016
Federal Home Loan Bank Stock	$	20,000	$	20,000
Federal Reserve Bank Stock	20,167		20,063
Total	$	40,167	$	40,063

These securities can only be redeemed or sold at their par value and only to the respective issuing government-supported institution or to another member institution. The Company records these non-marketable equity securities as a component of other assets and periodically evaluates these securities for impairment. Management considers these non-marketable equity securities to be long-term investments. Accordingly, when evaluating these securities for impairment, management considers the ultimate recoverability of the par value rather than recognizing temporary declines in value.

Visa Class B Restricted Shares

In 2008, the Company received Visa Class B restricted shares as part of Visa’s initial public offering. These shares are transferable only under limited circumstances until they can be converted into the publicly traded Class A common shares. This conversion will not occur until the settlement of certain litigation which is indemnified by Visa members, including the Company. Visa funded an escrow account from its initial public offering to settle these litigation claims. Should this escrow account not be sufficient to cover these litigation claims, Visa is entitled to fund additional amounts to the escrow account by reducing each member bank’s Class B conversion ratio to unrestricted Class A shares. As of June 30, 2017, the conversion ratio was 1.6483.

During the first quarter of 2017, the Company recorded a $12.5 million gain on the sale of 90,000 Visa Class B shares. Concurrent with every sale of Visa Class B shares, the Company has entered into an agreement with the buyer that requires payment to the buyer in the event Visa further reduces the conversion ratio. Based on the existing transfer restriction and the uncertainty of the outcome of the Visa litigation mentioned above, the remaining 90,914 Class B shares (149,854 Class A equivalents) that the Company owns as of June 30, 2017 are carried at a zero cost basis.

- Definition

The entire disclosure for investments in certain debt and equity securities.

+ References + Details

Loans and Leases and the Allowance for Loan and Lease Losses

6 Months Ended

Jun. 30, 2017

Loans and Leases and Allowance for Loan and Lease Losses [Abstract]

Loans and Leases and the Allowance for Loan and Lease Losses

Loans and Leases

The Company’s loan and lease portfolio was comprised of the following as of June 30, 2017 and December 31, 2016:



(dollars in thousands)	June 30, 2017		December 31, 2016
Commercial
Commercial and Industrial	$	1,241,953	$	1,249,791
Commercial Mortgage	2,009,886		1,889,551
Construction	248,030		270,018
Lease Financing	205,043		208,332
Total Commercial	3,704,912		3,617,692
Consumer
Residential Mortgage	3,317,179		3,163,073
Home Equity	1,473,123		1,334,163
Automobile	484,092		454,333
Other ¹	408,307		380,524
Total Consumer	5,682,701		5,332,093
Total Loans and Leases	$	9,387,613	$	8,949,785


¹	Comprised of other revolving credit, installment, and lease financing.

The majority of the Company’s lending activity is with customers located in the State of Hawaii. A substantial portion of the Company’s real estate loans are secured by real estate in Hawaii.

Net gains related to sales of residential mortgage loans, recorded as a component of mortgage banking income were $1.8 million and $4.4 million for the three months ended June 30, 2017 and 2016, respectively, and $3.2 million and $6.2 million for the six months ended June 30, 2017 and 2016, respectively.

Allowance for Loan and Lease Losses (the “Allowance”)

The following presents by portfolio segment, the activity in the Allowance for the three and six months ended June 30, 2017 and 2016. The following also presents by portfolio segment, the balance in the Allowance disaggregated on the basis of the Company’s impairment measurement method and the related recorded investment in loans and leases as of June 30, 2017 and 2016.



(dollars in thousands)	Commercial			Consumer			Total
Three Months Ended June 30, 2017
Allowance for Loan and Lease Losses:
Balance at Beginning of Period	$	66,893		$	38,171		$	105,064
Loans and Leases Charged-Off	(124		)	(5,363		)	(5,487		)
Recoveries on Loans and Leases Previously Charged-Off	266			2,260			2,526
Net Loans and Leases Recovered (Charged-Off)	142			(3,103		)	(2,961		)
Provision for Credit Losses	(853		)	5,103			4,250
Balance at End of Period	$	66,182		$	40,171		$	106,353
Six Months Ended June 30, 2017
Allowance for Loan and Lease Losses:
Balance at Beginning of Period	$	65,680		$	38,593		$	104,273
Loans and Leases Charged-Off	(298		)	(10,893		)	(11,191		)
Recoveries on Loans and Leases Previously Charged-Off	602			4,019			4,621
Net Loans and Leases Recovered (Charged-Off)	304			(6,874		)	(6,570		)
Provision for Credit Losses	198			8,452			8,650
Balance at End of Period	$	66,182		$	40,171		$	106,353
As of June 30, 2017
Allowance for Loan and Lease Losses:
Individually Evaluated for Impairment	$	45		$	3,792		$	3,837
Collectively Evaluated for Impairment	66,137			36,379			102,516
Total	$	66,182		$	40,171		$	106,353
Recorded Investment in Loans and Leases:
Individually Evaluated for Impairment	$	20,197		$	38,528		$	58,725
Collectively Evaluated for Impairment	3,684,715			5,644,173			9,328,888
Total	$	3,704,912		$	5,682,701		$	9,387,613

Three Months Ended June 30, 2016
Allowance for Loan and Lease Losses:
Balance at Beginning of Period	$	61,810		$	42,867		$	104,677
Loans and Leases Charged-Off	(204		)	(3,551		)	(3,755		)
Recoveries on Loans and Leases Previously Charged-Off	418			1,592			2,010
Net Loans and Leases Recovered (Charged-Off)	214			(1,959		)	(1,745		)
Provision for Credit Losses	5			995			1,000
Balance at End of Period	$	62,029		$	41,903		$	103,932
Six Months Ended June 30, 2016
Allowance for Loan and Lease Losses:
Balance at Beginning of Period	$	60,714		$	42,166		$	102,880
Loans and Leases Charged-Off	(461		)	(8,181		)	(8,642		)
Recoveries on Loans and Leases Previously Charged-Off	7,323			3,371			10,694
Net Loans and Leases Recovered (Charged-Off)	6,862			(4,810		)	2,052
Provision for Credit Losses	(5,547		)	4,547			(1,000		)
Balance at End of Period	$	62,029		$	41,903		$	103,932
As of June 30, 2016
Allowance for Loan and Lease Losses:
Individually Evaluated for Impairment	$	7		$	3,195		$	3,202
Collectively Evaluated for Impairment	62,022			38,708			100,730
Total	$	62,029		$	41,903		$	103,932
Recorded Investment in Loans and Leases:
Individually Evaluated for Impairment	$	22,271		$	38,691		$	60,962
Collectively Evaluated for Impairment	3,283,571			4,986,936			8,270,507
Total	$	3,305,842		$	5,025,627		$	8,331,469

Credit Quality Indicators

The Company uses several credit quality indicators to manage credit risk in an ongoing manner. The Company uses an internal credit risk rating system that categorizes loans and leases into pass, special mention, or classified categories. Credit risk ratings are applied individually to those classes of loans and leases that have significant or unique credit characteristics that benefit from a case-by-case evaluation. These are typically loans and leases to businesses or individuals in the classes which comprise the commercial portfolio segment. Groups of loans and leases that are underwritten and structured using standardized criteria and characteristics, such as statistical models (e.g., credit scoring or payment performance), are typically risk-rated and monitored collectively. These are typically loans and leases to individuals in the classes which comprise the consumer portfolio segment.

The following are the definitions of the Company’s credit quality indicators:


Pass:	Loans and leases in all classes within the commercial and consumer portfolio segments that are not adversely rated, are contractually current as to principal and interest, and are otherwise in compliance with the contractual terms of the loan or lease agreement. Management believes that there is a low likelihood of loss related to those loans and leases that are considered pass.

Special Mention:

Loans and leases in the classes within the commercial portfolio segment that have potential weaknesses that deserve management’s close attention. If not addressed, these potential weaknesses may result in deterioration of the repayment prospects for the loan or lease. The special mention credit quality indicator is not used for classes of loans and leases that are included in the consumer portfolio segment. Management believes that there is a moderate likelihood of some loss related to those loans and leases that are considered special mention.

Classified:

Loans and leases in the classes within the commercial portfolio segment that are inadequately protected by the sound worth and paying capacity of the borrower or of the collateral pledged, if any. Classified loans and leases are also those in the classes within the consumer portfolio segment that are past due 90 days or more as to principal or interest. Residential mortgage loans that are past due 90 days or more as to principal or interest may be considered pass if the Company is in the process of collection and the current loan-to-value ratio is 60% or less. Home equity loans that are past due 90 days or more as to principal or interest may be considered pass if the Company is in the process of collection, the first mortgage is with the Company, and the current combined loan-to-value ratio is 60% or less. Residential mortgage and home equity loans may be current as to principal and interest, but may be considered classified for a period of generally up to six months following a loan modification. Following a period of demonstrated performance in accordance with the modified contractual terms, the loan may be removed from classified status. Management believes that there is a distinct possibility that the Company will sustain some loss if the deficiencies related to classified loans and leases are not corrected in a timely manner.

The Company’s credit quality indicators are periodically updated on a case-by-case basis. The following presents by class and by credit quality indicator, the recorded investment in the Company’s loans and leases as of June 30, 2017 and December 31, 2016.



	June 30, 2017
(dollars in thousands)	Commercial and Industrial		Commercial Mortgage		Construction		Lease Financing		Total Commercial
Pass	$	1,197,264	$	1,937,447	$	246,283	$	204,572	$	3,585,566
Special Mention	16,752		53,046		282		—		70,080
Classified	27,937		19,393		1,465		471		49,266
Total	$	1,241,953	$	2,009,886	$	248,030	$	205,043	$	3,704,912

(dollars in thousands)	Residential Mortgage		Home Equity		Automobile		Other ¹		Total Consumer
Pass	$	3,307,841	$	1,466,847	$	483,553	$	407,468	$	5,665,709
Special Mention	—		1,764		—		—		1,764
Classified	9,338		4,512		539		839		15,228
Total	$	3,317,179	$	1,473,123	$	484,092	$	408,307	$	5,682,701
Total Recorded Investment in Loans and Leases									$	9,387,613



	December 31, 2016
(dollars in thousands)	Commercial and Industrial		Commercial Mortgage		Construction		Lease Financing		Total Commercial
Pass	$	1,203,025	$	1,792,119	$	264,287	$	207,386	$	3,466,817
Special Mention	20,253		66,734		4,218		5		91,210
Classified	26,513		30,698		1,513		941		59,665
Total	$	1,249,791	$	1,889,551	$	270,018	$	208,332	$	3,617,692

(dollars in thousands)	Residential Mortgage		Home Equity		Automobile		Other¹		Total Consumer
Pass	$	3,149,294	$	1,327,676	$	453,439	$	379,793	$	5,310,202
Special Mention	—		2,964		—		—		2,964
Classified	13,779		3,523		894		731		18,927
Total	$	3,163,073	$	1,334,163	$	454,333	$	380,524	$	5,332,093
Total Recorded Investment in Loans and Leases									$	8,949,785


¹	Comprised of other revolving credit, installment, and lease financing.

Aging Analysis

The following presents by class, an aging analysis of the Company’s loan and lease portfolio as of June 30, 2017 and December 31, 2016.



(dollars in thousands)	30 - 59 Days Past Due		60 - 89 Days Past Due		Past Due 90 Days or More		Non-Accrual		Total Past Due and Non-Accrual		Current		Total Loans and Leases		Non-Accrual Loans and Leases that are Current ²
As of June 30, 2017
Commercial
Commercial and Industrial	$	310	$	68	$	—	$	175	$	553	$	1,241,400	$	1,241,953	$	78
Commercial Mortgage	12		—		—		1,460		1,472		2,008,414		2,009,886		899
Construction	—		—		—		—		—		248,030		248,030		—
Lease Financing	—		—		—		—		—		205,043		205,043		—
Total Commercial	322		68		—		1,635		2,025		3,702,887		3,704,912		977
Consumer
Residential Mortgage	3,486		869		2,269		9,337		15,961		3,301,218		3,317,179		733
Home Equity	2,331		524		2,343		3,405		8,603		1,464,520		1,473,123		1,006
Automobile	11,184		1,397		539		—		13,120		470,972		484,092		—
Other ¹	2,886		1,597		1,859		—		6,342		401,965		408,307		—
Total Consumer	19,887		4,387		7,010		12,742		44,026		5,638,675		5,682,701		1,739
Total	$	20,209	$	4,455	$	7,010	$	14,377	$	46,051	$	9,341,562	$	9,387,613	$	2,716

As of December 31, 2016
Commercial
Commercial and Industrial	$	10,698	$	1,016	$	—	$	151	$	11,865	$	1,237,926	$	1,249,791	$	—
Commercial Mortgage	128		17		—		997		1,142		1,888,409		1,889,551		416
Construction	—		—		—		—		—		270,018		270,018		—
Lease Financing	—		—		—		—		—		208,332		208,332		—
Total Commercial	10,826		1,033		—		1,148		13,007		3,604,685		3,617,692		416
Consumer
Residential Mortgage	6,491		106		3,127		13,780		23,504		3,139,569		3,163,073		1,628
Home Equity	3,063		2,244		1,457		3,147		9,911		1,324,252		1,334,163		1,015
Automobile	11,692		2,162		894		—		14,748		439,585		454,333		—
Other ¹	3,200		1,532		1,592		—		6,324		374,200		380,524		—
Total Consumer	24,446		6,044		7,070		16,927		54,487		5,277,606		5,332,093		2,643
Total	$	35,272	$	7,077	$	7,070	$	18,075	$	67,494	$	8,882,291	$	8,949,785	$	3,059


¹	Comprised of other revolving credit, installment, and lease financing.


²	Represents non-accrual loans that are not past due 30 days or more; however, full payment of principal and interest is still not expected.

Impaired Loans

The following presents by class, information related to impaired loans as of June 30, 2017 and December 31, 2016.



(dollars in thousands)	Recorded Investment		Unpaid Principal Balance		Related Allowance for Loan Losses
June 30, 2017
Impaired Loans with No Related Allowance Recorded:
Commercial
Commercial and Industrial	$	8,216	$	15,178	$	—
Commercial Mortgage	9,573		13,073		—
Construction	1,465		1,465		—
Total Commercial	19,254		29,716		—
Total Impaired Loans with No Related Allowance Recorded	$	19,254	$	29,716	$	—

Impaired Loans with an Allowance Recorded:
Commercial
Commercial and Industrial	$	624	$	624	$	13
Commercial Mortgage	319		319		32
Total Commercial	943		943		45
Consumer
Residential Mortgage	21,947		26,686		3,167
Home Equity	1,735		1,735		267
Automobile	12,178		12,178		279
Other ¹	2,668		2,669		79
Total Consumer	38,528		43,268		3,792
Total Impaired Loans with an Allowance Recorded	$	39,471	$	44,211	$	3,837

Impaired Loans:
Commercial	$	20,197	$	30,659	$	45
Consumer	38,528		43,268		3,792
Total Impaired Loans	$	58,725	$	73,927	$	3,837

December 31, 2016
Impaired Loans with No Related Allowance Recorded:
Commercial
Commercial and Industrial	$	9,556	$	16,518	$	—
Commercial Mortgage	9,373		12,873		—
Construction	1,513		1,513		—
Total Commercial	20,442		30,904		—
Total Impaired Loans with No Related Allowance Recorded	$	20,442	$	30,904	$	—

Impaired Loans with an Allowance Recorded:
Commercial
Commercial and Industrial	$	765	$	765	$	24
Commercial Mortgage	365		365		21
Total Commercial	1,130		1,130		45
Consumer
Residential Mortgage	25,625		30,615		3,224
Home Equity	1,516		1,516		15
Automobile	9,660		9,660		206
Other ¹	2,325		2,325		65
Total Consumer	39,126		44,116		3,510
Total Impaired Loans with an Allowance Recorded	$	40,256	$	45,246	$	3,555

Impaired Loans:
Commercial	$	21,572	$	32,034	$	45
Consumer	39,126		44,116		3,510
Total Impaired Loans	$	60,698	$	76,150	$	3,555

¹ Comprised of other revolving credit and installment financing.

The following presents by class, information related to the average recorded investment and interest income recognized on impaired loans for the three and six months ended June 30, 2017 and 2016.



	Three Months Ended June 30, 2017				Three Months Ended June 30, 2016
(dollars in thousands)	Average Recorded Investment		Interest Income Recognized		Average Recorded Investment		Interest Income Recognized
Impaired Loans with No Related Allowance Recorded:
Commercial
Commercial and Industrial	$	8,717	$	61	$	10,032	$	112
Commercial Mortgage	9,369		77		10,059		93
Construction	1,477		24		1,570		25
Total Commercial	19,563		162		21,661		230
Total Impaired Loans with No Related Allowance Recorded	$	19,563	$	162	$	21,661	$	230

Impaired Loans with an Allowance Recorded:
Commercial
Commercial and Industrial	$	657	$	9	$	968	$	12
Commercial Mortgage	331		4		—		—
Total Commercial	988		13		968		12
Consumer
Residential Mortgage	23,148		214		27,995		250
Home Equity	1,621		20		1,511		18
Automobile	11,547		195		7,422		125
Other ¹	2,663		57		1,932		43
Total Consumer	38,979		486		38,860		436
Total Impaired Loans with an Allowance Recorded	$	39,967	$	499	$	39,828	$	448

Impaired Loans:
Commercial	$	20,551	$	175	$	22,629	$	242
Consumer	38,979		486		38,860		436
Total Impaired Loans	$	59,530	$	661	$	61,489	$	678

	Six Months Ended June 30, 2017				Six Months Ended June 30, 2016
(dollars in thousands)	Average Recorded Investment		Interest Income Recognized		Average Recorded Investment		Interest Income Recognized
Impaired Loans with No Related Allowance Recorded:
Commercial
Commercial and Industrial	$	8,996	$	142	$	11,571	$	218
Commercial Mortgage	9,370		162		10,175		162
Construction	1,489		48		1,581		51
Total Commercial	19,855		352		23,327		431
Total Impaired Loans with No Related Allowance Recorded	$	19,855	$	352	$	23,327	$	431

Impaired Loans with an Allowance Recorded:
Commercial
Commercial and Industrial	$	693	$	20	$	1,075	$	32
Commercial Mortgage	342		8		—		—
Total Commercial	1,035		28		1,075		32
Consumer
Residential Mortgage	23,974		426		28,323		501
Home Equity	1,586		37		1,370		35
Automobile	10,918		364		7,285		247
Other ¹	2,550		110		1,843		82
Total Consumer	39,028		937		38,821		865
Total Impaired Loans with an Allowance Recorded	$	40,063	$	965	$	39,896	$	897

Impaired Loans:
Commercial	$	20,890	$	380	$	24,402	$	463
Consumer	39,028		937		38,821		865
Total Impaired Loans	$	59,918	$	1,317	$	63,223	$	1,328


¹	Comprised of other revolving credit and installment financing.

For the three and six months ended June 30, 2017 and 2016, the amounts of interest income recognized by the Company within the periods that the loans were impaired were primarily related to loans modified in a troubled debt restructuring that remained on accrual status. For the three and six months ended June 30, 2017 and 2016, the amount of interest income recognized using a cash-basis method of accounting during the periods that the loans were impaired was not material.

Modifications

A modification of a loan constitutes a troubled debt restructuring (“TDR”) when the Company, for economic or legal reasons related to a borrower’s financial difficulties, grants a concession to the borrower that it would not otherwise consider. Loans modified in a TDR were $57.5 million and $60.0 million as of June 30, 2017 and December 31, 2016, respectively. As of June 30, 2017, there were no commitments to lend additional funds on loans modified in a TDR. As of December 31, 2016, there were $0.4 million of commitments to lend additional funds on loans modified in a TDR.

The Company offers various types of concessions when modifying a loan or lease. Commercial and industrial loans modified in a TDR often involve temporary interest-only payments, term extensions, and converting revolving credit lines to term loans. Additional collateral, a co-borrower, or a guarantor are often requested. Commercial mortgage and construction loans modified in a TDR often involve reducing the interest rate for the remaining term of the loan, extending the maturity date at an interest rate lower than the current market rate for new debt with similar risk, or substituting or adding a co-borrower or guarantor. Construction loans modified in a TDR may also involve extending the interest-only payment period. Residential mortgage loans modified in a TDR generally include a lower interest rate and the loan being fully amortized for up to 40 years from the modification effective date. In some cases, the Company may forbear a portion of the unpaid principal balance with a balloon payment due upon maturity or pay-off of the loan. Land loans are also included in the class of residential mortgage loans. Land loans are typically structured as interest-only monthly payments with a balloon payment due at maturity. Land loan modifications usually involve extending the interest-only monthly payments up to an additional five years with a balloon payment due at maturity, or re-amortizing the remaining balance over a period up to 360 months. Interest rates are not changed for land loan modifications. Home equity modifications are made infrequently and uniquely designed to meet the specific needs of each borrower. Automobile loans modified in a TDR are primarily comprised of loans where the Company has lowered monthly payments by extending the term.

Loans modified in a TDR are typically already on non-accrual status and partial charge-offs have in some cases already been taken against the outstanding loan balance. As a result, loans modified in a TDR may have the financial effect of increasing the specific Allowance associated with the loan. An Allowance for impaired consumer and commercial loans that have been modified in a TDR is measured based on the present value of expected future cash flows discounted at the loan’s effective interest rate, the loan’s observable market price, or the estimated fair value of the collateral, less any selling costs, if the loan is collateral dependent. Management exercises significant judgment in developing these estimates.

The following presents by class, information related to loans modified in a TDR during the three and six months ended June 30, 2017 and 2016.



	Loans Modified as a TDR for the Three Months Ended June 30, 2017							Loans Modified as a TDR for the Three Months Ended June 30, 2016
			Recorded			Increase in				Recorded			Increase in
Troubled Debt Restructurings	Number of		Investment			Allowance		Number of		Investment			Allowance
(dollars in thousands)	Contracts	(as of period end)¹			(as of period end)			Contracts	(as of period end)¹			(as of period end)
Commercial
Commercial and Industrial	6		$	4,191		$	11	16		$	2,955		$	—
Commercial Mortgage	1		700			—		—		—			—
Total Commercial	7		4,891			11		16		2,955			—
Consumer
Residential Mortgage	—		—			—		1		440			—
Home Equity	1		4			4		—		—			—
Automobile	99		2,115			49		53		977			22
Other ²	40		304			8		40		271			8
Total Consumer	140		2,423			61		94		1,688			30
Total	147		$	7,314		$	72	110		$	4,643		$	30

	Loans Modified as a TDR for the Six Months Ended June 30, 2017							Loans Modified as a TDR for the Six Months Ended June 30, 2016
			Recorded			Increase in				Recorded			Increase in
Troubled Debt Restructurings	Number of		Investment			Allowance		Number of		Investment			Allowance
(dollars in thousands)	Contracts	(as of period end)¹			(as of period end)			Contracts	(as of period end)¹			(as of period end)
Commercial
Commercial and Industrial	11		$	7,235		$	11	18		$	3,102		$	2
Commercial Mortgage	2		1,096			—		—		—			—
Total Commercial	13		8,331			11		18		3,102			2
Consumer
Residential Mortgage	—		—			—		4		1,610			15
Home Equity	1		239			4		1		478			6
Automobile	209		4,315			99		108		2,008			48
Other ²	114		891			24		99		684			19
Total Consumer	324		5,445			127		212		4,780			88
Total	337		$	13,776		$	138	230		$	7,882		$	90


¹	The period end balances reflect all paydowns and charge-offs since the modification date. TDRs fully paid-off, charged-off, or foreclosed upon by period end are not included.


²	Comprised of other revolving credit and installment financing.

The following presents by class, all loans modified in a TDR that defaulted during the three and six months ended June 30, 2017 and 2016, and within twelve months of their modification date. A TDR is considered to be in default once it becomes 60 days or more past due following a modification.



	Three Months Ended June 30, 2017			Three Months Ended June 30, 2016
TDRs that Defaulted During the Period,		Recorded		Recorded
Within Twelve Months of their Modification Date	Number of	Investment		Number of	Investment
(dollars in thousands)	Contracts	(as of period end)¹		Contracts	(as of period end)¹
Consumer
Residential Mortgage	—	$	—	1	$	43
Automobile	12	267		3	21
Other ²	18	137		9	70
Total Consumer	30	404		13	134
Total	30	$	404	13	$	134

	Six Months Ended June 30, 2017			Six Months Ended June 30, 2016
TDRs that Defaulted During the Period,		Recorded		Recorded
Within Twelve Months of their Modification Date	Number of	Investment		Number of	Investment
(dollars in thousands)	Contracts	(as of period end)¹		Contracts	(as of period end)¹
Commercial
Commercial and Industrial	1	$	49	—	$	—
Total Commercial	1	49		—	—

Consumer
Residential Mortgage	—	—		3	1,056
Home Equity	—	—		1	162
Automobile	17	390		4	57
Other ²	36	255		22	142
Total Consumer	53	645		30	1,417
Total	54	$	694	30	$	1,417


¹	The period end balances reflect all paydowns and charge-offs since the modification date. TDRs fully paid-off, charged-off, or foreclosed upon by period end are not included.


²	Comprised of other revolving credit and installment financing.

Commercial and consumer loans modified in a TDR are closely monitored for delinquency as an early indicator of possible future default. If loans modified in a TDR subsequently default, the Company evaluates the loan for possible further impairment. The specific Allowance associated with the loan may be increased, adjustments may be made in the allocation of the Allowance, or partial charge-offs may be taken to further write-down the carrying value of the loan.

Foreclosure Proceedings

Consumer mortgage loans collateralized by residential real estate property that are in the process of foreclosure totaled $6.2 million as of June 30, 2017.

Mortgage Servicing Rights

6 Months Ended

Jun. 30, 2017

Transfers and Servicing of Financial Assets [Abstract]

Mortgage Servicing Rights

The Company’s portfolio of residential mortgage loans serviced for third parties was $2.8 billion as of June 30, 2017 and $2.7 billion as of December 31, 2016. Substantially all of these loans were originated by the Company and sold to third parties on a non-recourse basis with servicing rights retained. These retained servicing rights are recorded as a servicing asset and are initially recorded at fair value (see Note 13 Fair Value of Assets and Liabilities for more information). Changes to the balance of mortgage servicing rights are recorded in mortgage banking income in the Company’s consolidated statements of income.

The Company’s mortgage servicing activities include collecting principal, interest, and escrow payments from borrowers; making tax and insurance payments on behalf of borrowers; monitoring delinquencies and executing foreclosure proceedings; and accounting for and remitting principal and interest payments to investors. Servicing income, including late and ancillary fees, was $1.8 million and $1.7 million for the three months ended June 30, 2017 and 2016, respectively, and $3.5 million for the six months ended June 30, 2017 and 2016. Servicing income is recorded in mortgage banking income in the Company’s consolidated statements of income. The Company’s residential mortgage investor loan servicing portfolio is primarily comprised of fixed rate loans concentrated in Hawaii.

For the three and six months ended June 30, 2017 and 2016, the change in the carrying value of the Company’s mortgage servicing rights accounted for under the fair value measurement method was as follows:



	Three Months Ended June 30,						Six Months Ended June 30,
(dollars in thousands)	2017			2016			2017			2016
Balance at Beginning of Period	$	1,586		$	1,910		$	1,655		$	1,970
Change in Fair Value:
Due to Payoffs	(38		)	(91		)	(107		)	(151		)
Total Changes in Fair Value of Mortgage Servicing Rights	(38		)	(91		)	(107		)	(151		)
Balance at End of Period	$	1,548		$	1,819		$	1,548		$	1,819

For the three and six months ended June 30, 2017 and 2016, the change in the carrying value of the Company’s mortgage servicing rights accounted for under the amortization method, net of valuation allowance, was as follows:



	Three Months Ended June 30,						Six Months Ended June 30,
(dollars in thousands)	2017			2016			2017			2016
Balance at Beginning of Period	$	22,705		$	20,753		$	22,008		$	21,032
Servicing Rights that Resulted From Asset Transfers	961			329			2,276			771
Amortization	(690		)	(677		)	(1,308		)	(1,313		)
Valuation Allowance Provision	(53		)	(2,593		)	(53		)	(2,678		)
Balance at End of Period	$	22,923		$	17,812		$	22,923		$	17,812

Valuation Allowance:
Balance at Beginning of Period	$	—		$	(106	)	$	—		$	(21	)
Valuation Allowance Provision	(53		)	(2,593		)	(53		)	(2,678		)
Balance at End of Period	$	(53	)	$	(2,699	)	$	(53	)	$	(2,699	)

Fair Value of Mortgage Servicing Rights Accounted for Under the Amortization Method
Beginning of Period	$	25,946		$	20,841		$	25,148		$	24,804
End of Period	$	25,479		$	17,812		$	25,479		$	17,812

The key data and assumptions used in estimating the fair value of the Company’s mortgage servicing rights as of June 30, 2017 and December 31, 2016 were as follows:



	June 30, 2017		December 31, 2016
Weighted-Average Constant Prepayment Rate ¹	8.60	%	8.13	%
Weighted-Average Life (in years)	7.20		7.43
Weighted-Average Note Rate	4.07	%	4.10	%
Weighted-Average Discount Rate ²	8.87	%	9.33	%


¹	Represents annualized loan repayment rate assumption.


²	Derived from multiple interest rate scenarios that incorporate a spread to a market yield curve and market volatilities.

A sensitivity analysis of the Company’s fair value of mortgage servicing rights to changes in certain key assumptions as of June 30, 2017 and December 31, 2016 is presented in the following table.



(dollars in thousands)	June 30, 2017			December 31, 2016
Constant Prepayment Rate
Decrease in fair value from 25 basis points (“bps”) adverse change	$	(317	)	$	(321	)
Decrease in fair value from 50 bps adverse change	(628		)	(636		)
Discount Rate
Decrease in fair value from 25 bps adverse change	(285		)	(288		)
Decrease in fair value from 50 bps adverse change	(565		)	(570		)

This analysis generally cannot be extrapolated because the relationship of a change in one key assumption to the change in the fair value of the Company’s mortgage servicing rights usually is not linear. Also, the effect of changing one key assumption without changing other assumptions is not realistic.

- Definition

The entire disclosure for a transferor's continuing involvement in financial assets that it has transferred in a securitization or asset-backed financing arrangement, the nature of any restrictions on assets reported by an entity in its statement of financial position that relate to a transferred financial asset (including the carrying amounts of such assets), how servicing assets and servicing liabilities are reported, and (for securitization or asset-backed financing arrangements accounted for as sales) when a transferor has continuing involvement with the transferred financial assets and transfers of financial assets accounted for as secured borrowings, how the transfer of financial assets affects an entity's financial position, financial performance, and cash flows.

+ References + Details

Low Income Housing Tax Credit Partnerships

6 Months Ended

Jun. 30, 2017

Equity Method Investments and Joint Ventures [Abstract]

Low Income Housing Tax Credit Partnerships

Affordable Housing Projects Tax Credit Partnerships

The Company makes equity investments in various limited partnerships that sponsor affordable housing projects utilizing the Low Income Housing Tax Credit (LIHTC) pursuant to Section 42 of the Internal Revenue Code. The purpose of these investments is to achieve a satisfactory return on capital, to facilitate the sale of affordable housing product offerings, and to assist in achieving goals associated with the Community Reinvestment Act. The primary activities of the limited partnerships include the identification, development, and operation of multi-family housing that is leased to qualifying residential tenants. Generally, these types of investments are funded through a combination of debt and equity.

The Company is a limited partner in each LIHTC limited partnership. Each limited partnership is managed by an unrelated third party general partner who exercises significant control over the affairs of the limited partnership. The general partner has all the rights, powers and authority granted or permitted to be granted to a general partner of a limited partnership. Duties entrusted to the general partner of each limited partnership include, but are not limited to: investment in operating companies, company expenditures, investment of excess funds, borrowing funds, employment of agents, disposition of fund property, prepayment and refinancing of liabilities, votes and consents, contract authority, disbursement of funds, accounting methods, tax elections, bank accounts, insurance, litigation, cash reserve, and use of working capital reserve funds. Except for limited rights granted to the limited partner(s) relating to the approval of certain transactions, the limited partner(s) may not participate in the operation, management, or control of the limited partnership’s business, transact any business in the limited partnership’s name or have any power to sign documents for or otherwise bind the limited partnership. In addition, the general partner may only be removed by the limited partner(s) in the event the general partner fails to comply with the terms of the agreement or is negligent in performing its duties.

The general partner of each limited partnership has both the power to direct the activities which most significantly affect the performance of each partnership and the obligation to absorb losses or the right to receive benefits that could be significant to the entities. Therefore, the Company has determined that it is not the primary beneficiary of any LIHTC partnership. The Company uses the effective yield method to account for its pre-2015 investments in these entities. Beginning January 1, 2015, any new investments that meet the requirements of the proportional amortization method are recognized using the proportional amortization method. The Company’s net affordable housing tax credit investments and related unfunded commitments were $66.9 million and $66.6 million as of June 30, 2017 and December 31, 2016, respectively, and are included in other assets in the consolidated statements of condition.

Unfunded Commitments

As of June 30, 2017, the expected payments for unfunded affordable housing commitments were as follows:



(dollars in thousands)	Amount
2017	$	3,173
2018	8,526
2019	5,947
2020	27
2021	9
Thereafter	425
Total Unfunded Commitments	$	18,107

The following table presents tax credits and other tax benefits recognized and amortization expense related to affordable housing for the three and six months ended June 30, 2017 and 2016.



	Three Months Ended June 30,				Six Months Ended June 30,
(dollars in thousands)	2017		2016		2017		2016
Effective Yield Method
Tax credits and other tax benefits recognized	$	3,439	$	3,516	$	6,869	$	7,032
Amortization Expense in Provision for Income Taxes	2,137		2,174		4,298		4,348

Proportional Amortization Method
Tax credits and other tax benefits recognized	$	440	$	259	$	761	$	518
Amortization Expense in Provision for Income Taxes	358		200		611		400

There were no impairment losses related to LIHTC investments during the six months ended June 30, 2017 and 2016.

Balance Sheet Offsetting

6 Months Ended

Jun. 30, 2017

Offsetting [Abstract]

Balance Sheet Offsetting

Interest Rate Swap Agreements (“Swap Agreements”)

The Company enters into swap agreements to facilitate the risk management strategies of a small number of commercial banking customers. The Company mitigates the risk of entering into these agreements by entering into equal and offsetting swap agreements with highly-rated third party financial institutions. The swap agreements are free-standing derivatives and are recorded at fair value in the Company’s consolidated statements of condition (asset positions are included in other assets and liability positions are included in other liabilities). The Company is party to master netting arrangements with its financial institution counterparties; however, the Company does not offset assets and liabilities under these arrangements for financial statement presentation purposes. The master netting arrangements provide for a single net settlement of all swap agreements, as well as collateral, in the event of default on, or termination of, any one contract. Collateral, usually in the form of cash or marketable securities, is posted by the party (i.e., the Company or the financial institution counterparty) with net liability positions in accordance with contract thresholds. The Company had net liability positions with its financial institution counterparties totaling $5.2 million and $5.5 million as of June 30, 2017 and December 31, 2016, respectively. See Note 11 Derivative Financial Instruments for more information.

Parties to a centrally cleared over-the-counter derivative exchange daily payments that reflect the daily change in value of the derivative. Effective 2017, these payments, commonly referred to as variation margin, will be recorded as settlements of the derivatives’ mark-to-market exposure rather than collateral against the exposures. During the second quarter of 2017, the Company executed its first centrally cleared swap agreements. This rule change effectively results in any centrally cleared derivative having a fair value that approximates zero on a daily basis, and therefore, these swap agreements were not included in the offsetting table at the end of this section. See Note 11 Derivative Financial Instruments for more information.

Securities Sold Under Agreements to Repurchase (“Repurchase Agreements”)

The Company enters into agreements under which it sells securities subject to an obligation to repurchase the same or similar securities. Under these arrangements, the Company may transfer legal control over the assets but still retain effective control through an agreement that both entitles and obligates the Company to repurchase the assets. As a result, these repurchase agreements are accounted for as collateralized financing arrangements (i.e., secured borrowings) and not as sales and subsequent repurchases of securities. The obligation to repurchase the securities is reflected as a liability in the Company’s consolidated statements of condition, while the securities underlying the repurchase agreements remain in the respective investment securities asset accounts. As a result, there is no offsetting or netting of the investment securities assets with the repurchase agreement liabilities. In addition, as the Company does not enter into reverse repurchase agreements, there is no such offsetting to be done with the repurchase agreements.

The right of setoff for a repurchase agreement resembles a secured borrowing, whereby the collateral pledged by the Company would be used to settle the fair value of the repurchase agreement should the Company be in default (e.g., fail to make an interest payment to the counterparty). For private institution repurchase agreements, if the private institution counterparty were to default (e.g., declare bankruptcy), the Company could cancel the repurchase agreement (i.e., cease payment of principal and interest) and attempt collection on the amount of collateral value in excess of the repurchase agreement fair value. The collateral is held by a third party financial institution in the counterparty’s custodial account. The counterparty has the right to sell or repledge the investment securities. For government entity repurchase agreements, the collateral is held by the Company in a segregated custodial account under a tri-party agreement. The Company is required by the counterparty to maintain adequate collateral levels. In the event the collateral fair value falls below stipulated levels, the Company will pledge additional securities. The Company closely monitors collateral levels to ensure adequate levels are maintained, while mitigating the potential risk of over-collateralization in the event of counterparty default.

The following table presents the remaining contractual maturities of the Company’s repurchase agreements as of June 30, 2017 and December 31, 2016, disaggregated by the class of collateral pledged.



	Remaining Contractual Maturity of Repurchase Agreements
(dollars in thousands)	Up to 90 days		91-365 days		1-3 Years		After 3 Years		Total
June 30, 2017
Class of Collateral Pledged:
Debt Securities Issued by the U.S. Treasury and Government Agencies	$	—	$	—	$	—	$	306,624	$	306,624
Debt Securities Issued by States and Political Subdivisions	695		2,790		1,000		—		4,485
Mortgage-Backed Securities:
Residential - Government Agencies	807		—		—		100,971		101,778
Residential - U.S. Government-Sponsored Enterprises	—		—		—		92,405		92,405
Total	$	1,502	$	2,790	$	1,000	$	500,000	$	505,292

December 31, 2016
Class of Collateral Pledged:
Debt Securities Issued by the U.S. Treasury and Government Agencies	$	—	$	—	$	200,000	$	104,681	$	304,681
Debt Securities Issued by States and Political Subdivisions	22,050		590		—		—		22,640
Mortgage-Backed Securities:
Residential - Government Agencies	738		—		—		97,281		98,019
Residential - U.S. Government-Sponsored Enterprises	—		—		—		98,038		98,038
Total	$	22,788	$	590	$	200,000	$	300,000	$	523,378

The following table presents the assets and liabilities subject to an enforceable master netting arrangement, or repurchase agreements, as of June 30, 2017 and December 31, 2016. The swap agreements we have with our commercial banking customers are not subject to an enforceable master netting arrangement, and therefore, are excluded from this table. As previously mentioned, centrally cleared swap agreements between the Company and institutional counterparties are also excluded from this table.



	(i)		(ii)		(iii) = (i)-(ii)		(iv)				(v) = (iii)-(iv)
	Gross Amounts Recognized in the Statements of Condition		Gross Amounts Offset in the Statements of Condition		Net Amounts Presented in the Statements of Condition		Gross Amounts Not Offset in the Statements of Condition
(dollars in thousands)							Netting Adjustments per Master Netting Arrangements		Fair Value of Collateral Pledged ¹		Net Amount
June 30, 2017
Assets:
Interest Rate Swap Agreements:
Institutional Counterparties	$	4,285	$	—	$	4,285	$	4,285	$	—	$	—

Liabilities:
Interest Rate Swap Agreements:
Institutional Counterparties	6,360		—		6,360		4,285		1,498		577

Repurchase Agreements:
Private Institutions	500,000		—		500,000		—		500,000		—
Government Entities	5,292		—		5,292		—		5,292		—
	$	505,292	$	—	$	505,292	$	—	$	505,292	$	—

December 31, 2016
Assets:
Interest Rate Swap Agreements:
Institutional Counterparties	$	5,094	$	—	$	5,094	$	5,094	$	—	$	—

Liabilities:
Interest Rate Swap Agreements:
Institutional Counterparties	6,489		—		6,489		5,094		500		895

Repurchase Agreements:
Private Institutions	500,000		—		500,000		—		500,000		—
Government Entities	23,378		—		23,378		—		23,378		—
	$	523,378	$	—	$	523,378	$	—	$	523,378	$	—

¹The application of collateral cannot reduce the net amount below zero. Therefore, excess collateral is not reflected in this column. For repurchase agreements with private institutions, the fair value of investment securities pledged was $575.5 million and $599.3 million as of June 30, 2017 and December 31, 2016, respectively. For repurchase agreements with government entities, the fair value of investment securities pledged was $7.1 million and $28.9 million as of June 30, 2017 and December 31, 2016, respectively.

Accumulated Other Comprehensive Income (Loss)

6 Months Ended

Jun. 30, 2017

Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract]

Accumulated Other Comprehensive Income (Loss)

The following table presents the components of other comprehensive income (loss) for the three and six months ended June 30, 2017 and 2016:



(dollars in thousands)	Before Tax			Tax Effect			Net of Tax
Three Months Ended June 30, 2017
Net Unrealized Gains (Losses) on Investment Securities:
Net Unrealized Gains (Losses) Arising During the Period	$	4,642		$	1,833		$	2,809
Amounts Reclassified from Accumulated Other Comprehensive Income (Loss) that (Increase) Decrease Net Income:
Amortization of Unrealized Holding (Gains) Losses on Held-to-Maturity Securities ¹	491			194			297
Net Unrealized Gains (Losses) on Investment Securities	5,133			2,027			3,106
Defined Benefit Plans:
Amortization of Net Actuarial Losses (Gains)	322			127			195
Amortization of Prior Service Credit	(80		)	(32		)	(48		)
Defined Benefit Plans, Net	242			95			147
Other Comprehensive Income (Loss)	$	5,375		$	2,122		$	3,253

Three Months Ended June 30, 2016
Net Unrealized Gains (Losses) on Investment Securities:
Net Unrealized Gains (Losses) Arising During the Period	$	8,279		$	3,268		$	5,011
Amounts Reclassified from Accumulated Other Comprehensive Income (Loss) that (Increase) Decrease Net Income:
Amortization of Unrealized Holding (Gains) Losses on Held-to-Maturity Securities ¹	242			96			146
Net Unrealized Gains (Losses) on Investment Securities	8,521			3,364			5,157
Defined Benefit Plans:
Amortization of Net Actuarial Losses (Gains)	312			123			189
Amortization of Prior Service Credit	(80		)	(32		)	(48		)
Defined Benefit Plans, Net	232			91			141
Other Comprehensive Income (Loss)	$	8,753		$	3,455		$	5,298

Six Months Ended June 30, 2017
Net Unrealized Gains (Losses) on Investment Securities:
Net Unrealized Gains (Losses) Arising During the Period	$	12,222		$	4,824		$	7,398
Amounts Reclassified from Accumulated Other Comprehensive Income (Loss) that (Increase) Decrease Net Income:
Amortization of Unrealized Holding (Gains) Losses on Held-to-Maturity Securities ¹	995			393			602
Net Unrealized Gains (Losses) on Investment Securities	13,217			5,217			8,000
Defined Benefit Plans:
Amortization of Net Actuarial Losses (Gains)	645			255			390
Amortization of Prior Service Credit	(161		)	(64		)	(97		)
Defined Benefit Plans, Net	484			191			293
Other Comprehensive Income (Loss)	$	13,701		$	5,408		$	8,293

Six Months Ended June 30, 2016
Net Unrealized Gains (Losses) on Investment Securities:
Net Unrealized Gains (Losses) Arising During the Period	$	22,223		$	8,773		$	13,450
Amounts Reclassified from Accumulated Other Comprehensive Income (Loss) that (Increase) Decrease Net Income:
Amortization of Unrealized Holding (Gains) Losses on Held-to-Maturity Securities ¹	663			262			401
Net Unrealized Gains (Losses) on Investment Securities	22,886			9,035			13,851
Defined Benefit Plans:
Amortization of Net Actuarial Losses (Gains)	626			247			379
Amortization of Prior Service Credit	(161		)	(64		)	(97		)
Defined Benefit Plans, Net	465			183			282
Other Comprehensive Income (Loss)	$	23,351		$	9,218		$	14,133


¹	The amount relates to the amortization/accretion of unrealized net gains and losses related to the Company’s reclassification of available-for-sale investment securities to the held-to-maturity category. The unrealized net gains/losses will be amortized/accreted over the remaining life of the investment securities as an adjustment of yield.

The following table presents the changes in each component of accumulated other comprehensive income (loss), net of tax, for the three and six months ended June 30, 2017 and 2016:



(dollars in thousands)	Investment Securities-Available-for-Sale		Investment Securities-Held-to-Maturity			Defined Benefit Plans			Accumulated Other Comprehensive Income (Loss)
Three Months Ended June 30, 2017
Balance at Beginning of Period	$	5,859	$	(5,979	)	$	(28,746	)	$	(28,866	)
Other Comprehensive Income (Loss) Before Reclassifications	2,809		—			—			2,809
Amounts Reclassified from Accumulated Other Comprehensive Income (Loss)	—		297			147			444
Total Other Comprehensive Income (Loss)	2,809		297			147			3,253
Balance at End of Period	$	8,668	$	(5,682	)	$	(28,599	)	$	(25,613	)

Three Months Ended June 30, 2016
Balance at Beginning of Period	$	20,998	$	(7,000	)	$	(28,720	)	$	(14,722	)
Other Comprehensive Income (Loss) Before Reclassifications	5,011		—			—			5,011
Amounts Reclassified from Accumulated Other Comprehensive Income (Loss)	—		146			141			287
Total Other Comprehensive Income (Loss)	5,011		146			141			5,298
Balance at End of Period	$	26,009	$	(6,854	)	$	(28,579	)	$	(9,424	)

Six Months Ended June 30, 2017
Balance at Beginning of Period	$	1,270	$	(6,284	)	$	(28,892	)	$	(33,906	)
Other Comprehensive Income (Loss) Before Reclassifications	7,398		—			—			7,398
Amounts Reclassified from Accumulated Other Comprehensive Income (Loss)	—		602			293			895
Total Other Comprehensive Income (Loss)	7,398		602			293			8,293
Balance at End of Period	$	8,668	$	(5,682	)	$	(28,599	)	$	(25,613	)

Six Months Ended June 30, 2016
Balance at Beginning of Period	$	12,559	$	(7,255	)	$	(28,861	)	$	(23,557	)
Other Comprehensive Income (Loss) Before Reclassifications	13,450		—			—			13,450
Amounts Reclassified from Accumulated Other Comprehensive Income (Loss)	—		401			282			683
Total Other Comprehensive Income (Loss)	13,450		401			282			14,133
Balance at End of Period	$	26,009	$	(6,854	)	$	(28,579	)	$	(9,424	)

The following table presents the amounts reclassified out of each component of accumulated other comprehensive income (loss) for the three and six months ended June 30, 2017 and 2016:



Details about Accumulated Other Comprehensive Income (Loss) Components	Amount Reclassified from Accumulated Other Comprehensive Income (Loss)¹						Affected Line Item in the Statement Where Net Income Is Presented
	Three Months Ended June 30,
(dollars in thousands)	2017			2016
Amortization of Unrealized Holding Gains (Losses) on Investment Securities Held-to-Maturity	$	(491	)	$	(242	)	Interest Income
	194			96			Provision for Income Tax
	(297		)	(146		)	Net of Tax

Amortization of Defined Benefit Plan Items
Prior Service Credit ²	80			80
Net Actuarial Losses ²	(322		)	(312		)
	(242		)	(232		)	Total Before Tax
	95			91			Provision for Income Tax
	(147		)	(141		)	Net of Tax

Total Reclassifications for the Period	$	(444	)	$	(287	)	Net of Tax

Details about Accumulated Other Comprehensive Income (Loss) Components	Amount Reclassified from Accumulated Other Comprehensive Income (Loss)¹						Affected Line Item in the Statement Where Net Income Is Presented
	Six Months Ended June 30,
(dollars in thousands)	2017			2016
Amortization of Unrealized Holding Gains (Losses) on Investment Securities Held-to-Maturity	$	(995	)	$	(663	)	Interest Income
	393			262			Provision for Income Tax
	(602		)	(401		)	Net of Tax

Amortization of Defined Benefit Plan Items
Prior Service Credit ²	161			161
Net Actuarial Losses ²	(645		)	(626		)
	(484		)	(465		)	Total Before Tax
	191			183			Provision for Income Tax
	(293		)	(282		)	Net of Tax

Total Reclassifications for the Period	$	(895	)	$	(683	)	Net of Tax


¹	Amounts in parentheses indicate reductions to net income.


²	These accumulated other comprehensive income (loss) components are included in the computation of net periodic benefit cost and are included in Salaries and Benefits on the consolidated statements of income (see Note 10 Pension Plans and Postretirement Benefit Plan for additional details).

- Definition

The entire disclosure for comprehensive income, which includes, but is not limited to, 1) the amount of income tax expense or benefit allocated to each component of other comprehensive income, including reclassification adjustments, 2) the reclassification adjustments for each classification of other comprehensive income and 3) the ending accumulated balances for each component of comprehensive income.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 15
-URI http://asc.fasb.org/extlink&oid=66004124&loc=d3e689-108580

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 1A
-URI http://asc.fasb.org/extlink&oid=66004124&loc=SL7669619-108580

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 12
-URI http://asc.fasb.org/extlink&oid=66004124&loc=d3e640-108580

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 17
-URI http://asc.fasb.org/extlink&oid=66004124&loc=d3e716-108580

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 16
-URI http://asc.fasb.org/extlink&oid=66004124&loc=d3e709-108580

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 11
-URI http://asc.fasb.org/extlink&oid=66004124&loc=d3e637-108580

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 14
-URI http://asc.fasb.org/extlink&oid=66004124&loc=d3e681-108580

Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Reclassification Adjustments
-URI http://asc.fasb.org/extlink&oid=6522872

+ Details

Earnings Per Share

6 Months Ended

Jun. 30, 2017

Earnings Per Share [Abstract]

Earnings Per Share

There were no adjustments to net income, the numerator, for purposes of computing earnings per share. The following is a reconciliation of the weighted average number of common shares outstanding for computing diluted earnings per share and antidilutive stock options and restricted stock outstanding for the three and six months ended June 30, 2017 and 2016:



	Three Months Ended June 30,		Six Months Ended June 30,
	2017	2016	2017	2016
Denominator for Basic Earnings Per Share	42,353,976	42,729,731	42,379,730	42,825,369
Dilutive Effect of Equity Based Awards	304,909	213,229	324,280	207,830
Denominator for Diluted Earnings Per Share	42,658,885	42,942,960	42,704,010	43,033,199

Antidilutive Stock Options and Restricted Stock Outstanding	7,127	—	—	1,438

Business Segments

6 Months Ended

Jun. 30, 2017

Segment Reporting [Abstract]

Business Segments

The Company’s business segments are defined as Retail Banking, Commercial Banking, Investment Services, and Treasury and Other. The Company’s internal management accounting process measures the performance of these business segments. This process, which is not necessarily comparable with the process used by any other financial institution, uses various techniques to assign balance sheet and income statement amounts to the business segments, including allocations of income, expense, the provision for credit losses, and capital. This process is dynamic and requires certain allocations based on judgment and other subjective factors. Unlike financial accounting, there is no comprehensive authoritative guidance for management accounting that is equivalent to GAAP. Previously reported results have been reclassified to conform to the current reporting structure.

The net interest income of the business segments reflects the results of a funds transfer pricing process that matches assets and liabilities with similar interest rate sensitivity and maturity characteristics and reflects the allocation of net interest income related to the Company’s overall asset and liability management activities on a proportionate basis. The basis for the allocation of net interest income is a function of the Company’s assumptions that are subject to change based on changes in current interest rates and market conditions. Funds transfer pricing also serves to transfer interest rate risk to Treasury. However, the other business segments have some latitude to retain certain interest rate exposures related to customer pricing decisions within guidelines.

The provision for credit losses reflects the actual net charge-offs of the business segments. The amount of the consolidated provision for loan and lease losses is based on the methodology that we use to estimate our consolidated Allowance. The residual provision for credit losses to arrive at the consolidated provision for credit losses is included in Treasury and Other.

Noninterest income and expense includes allocations from support units to business units. These allocations are based on actual usage where practicably calculated or by management’s estimate of such usage.

The provision for income taxes is allocated to business segments using a 37% effective income tax rate. However, the provision for income taxes for our Leasing business unit (included in the Commercial Banking segment) and Auto Leasing portfolio and Pacific Century Life Insurance business unit (both included in the Retail Banking segment) are assigned their actual effective income tax rates due to the unique relationship that income taxes have with their products. The residual income tax expense or benefit to arrive at the consolidated effective income tax rate is included in Treasury and Other.

Retail Banking

Retail Banking offers a broad range of financial products and services to consumers and small businesses. Loan and lease products include residential mortgage loans, home equity lines of credit, automobile loans and leases, personal lines of credit, installment loans, small business loans and leases, and credit cards. Deposit products include checking, savings, and time deposit accounts. Retail Banking also offers some types of consumer insurance products. Products and services from Retail Banking are delivered to customers through 69 branch locations and 388 ATMs throughout Hawaii and the Pacific Islands, e-Bankoh (on-line banking service), a 24-hour customer service center, and a mobile banking service.

Commercial Banking

Commercial Banking offers products including corporate banking, commercial real estate loans, commercial lease financing, auto dealer financing, and deposit products. Commercial lending and deposit products as well as public deposits are offered to middle-market and large companies in Hawaii and the Pacific Islands. In addition, Commercial Banking offers deposit products to government entities in Hawaii. Commercial real estate mortgages focus on customers that include investors, developers, and builders predominantly domiciled in Hawaii. Commercial Banking also includes international banking and provides merchant services to its small business customers.

Investment Services

Investment Services includes private banking and international client banking, trust services, investment management, and institutional investment advisory services. A significant portion of this segment’s income is derived from fees, which are generally based on the market values of assets under management. The private banking and personal trust groups assist individuals and families in building and preserving their wealth by providing investment, credit, and trust services to high-net-worth individuals. The investment management group manages portfolios utilizing a variety of investment products. Institutional client services offer investment advice to corporations, government entities, and foundations. This segment also provides a full service brokerage offering equities, mutual funds, life insurance, and annuity products.

Treasury and Other

Treasury consists of corporate asset and liability management activities, including interest rate risk management and a foreign currency exchange business. This segment’s assets and liabilities (and related interest income and expense) consist of interest-bearing deposits, investment securities, federal funds sold and purchased, and short and long-term borrowings. The primary sources of noninterest income are from bank-owned life insurance, net gains from the sale of investment securities, and foreign exchange income related to customer-driven currency requests from merchants and island visitors. The net residual effect of the transfer pricing of assets and liabilities is included in Treasury, along with the elimination of intercompany transactions.

Other organizational units (Technology, Operations, Marketing, Human Resources, Finance, Credit and Risk Management, and Corporate and Regulatory Administration) provide a wide-range of support to the Company’s other income earning segments. Expenses incurred by these support units are charged to the business segments through an internal cost allocation process.

Selected business segment financial information as of and for the three and six months ended June 30, 2017 and 2016 were as follows:



(dollars in thousands)	Retail Banking			Commercial Banking			Investment Services			Treasury and Other			Consolidated Total
Three Months Ended June 30, 2017
Net Interest Income	$	66,348		$	41,737		$	6,714		$	(2,520	)	$	112,279
Provision for Credit Losses	3,099			(132		)	(6		)	1,289			4,250
Net Interest Income After Provision for Credit Losses	63,249			41,869			6,720			(3,809		)	108,029
Noninterest Income	21,920			5,876			15,247			2,193			45,236
Noninterest Expense	(52,018		)	(18,407		)	(15,295		)	(2,469		)	(88,189		)
Income Before Provision for Income Taxes	33,151			29,338			6,672			(4,085		)	65,076
Provision for Income Taxes	(11,741		)	(10,325		)	(2,469		)	4,121			(20,414		)
Net Income	$	21,410		$	19,013		$	4,203		$	36		$	44,662
Total Assets as of June 30, 2017	$	5,626,767		$	3,658,867		$	307,529		$	7,388,129		$	16,981,292

Three Months Ended June 30, 2016
Net Interest Income	$	60,041		$	38,151		$	6,037		$	(679	)	$	103,550
Provision for Credit Losses	2,006			(258		)	(5		)	(743		)	1,000
Net Interest Income After Provision for Credit Losses	58,035			38,409			6,042			64			102,550
Noninterest Income	21,771			6,438			15,946			2,364			46,519
Noninterest Expense	(50,758		)	(17,762		)	(14,780		)	(2,771		)	(86,071		)
Income Before Provision for Income Taxes	29,048			27,085			7,208			(343		)	62,998
Provision for Income Taxes	(10,402		)	(9,608		)	(2,667		)	3,924			(18,753		)
Net Income	$	18,646		$	17,477		$	4,541		$	3,581		$	44,245
Total Assets as of June 30, 2016	$	5,076,204		$	3,239,572		$	282,143		$	7,262,982		$	15,860,901

Six Months Ended June 30, 2017
Net Interest Income	$	131,505		$	83,668		$	13,364		$	(6,386	)	$	222,151
Provision for Credit Losses	6,900			(320		)	(11		)	2,081			8,650
Net Interest Income After Provision for Credit Losses	124,605			83,988			13,375			(8,467		)	213,501
Noninterest Income	42,845			11,314			29,796			17,197			101,152
Noninterest Expense	(104,278		)	(36,762		)	(30,766		)	(4,951		)	(176,757		)
Income Before Provision for Income Taxes	63,172			58,540			12,405			3,779			137,896
Provision for Income Taxes	(22,415		)	(20,581		)	(4,590		)	5,528			(42,058		)
Net Income	$	40,757		$	37,959		$	7,815		$	9,307		$	95,838
Total Assets as of June 30, 2017	$	5,626,767		$	3,658,867		$	307,529		$	7,388,129		$	16,981,292

Six Months Ended June 30, 2016
Net Interest Income	$	118,051		$	76,499		$	12,489		$	(465	)	$	206,574
Provision for Credit Losses	4,842			(6,883		)	(11		)	1,052			(1,000		)
Net Interest Income After Provision for Credit Losses	113,209			83,382			12,500			(1,517		)	207,574
Noninterest Income	42,577			14,038			29,971			16,140			102,726
Noninterest Expense	(103,498		)	(35,029		)	(30,207		)	(4,723		)	(173,457		)
Income Before Provision for Income Taxes	52,288			62,391			12,264			9,900			136,843
Provision for Income Taxes	(18,629		)	(22,264		)	(4,537		)	3,042			(42,388		)
Net Income	$	33,659		$	40,127		$	7,727		$	12,942		$	94,455
Total Assets as of June 30, 2016	$	5,076,204		$	3,239,572		$	282,143		$	7,262,982		$	15,860,901

- Definition

The entire disclosure for reporting segments including data and tables. Reportable segments include those that meet any of the following quantitative thresholds a) it's reported revenue, including sales to external customers and intersegment sales or transfers is 10 percent or more of the combined revenue, internal and external, of all operating segments b) the absolute amount of its reported profit or loss is 10 percent or more of the greater, in absolute amount of 1) the combined reported profit of all operating segments that did not report a loss or 2) the combined reported loss of all operating segments that did report a loss c) its assets are 10 percent or more of the combined assets of all operating segments.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 34
-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8981-108599

Reference 2: http://www.xbrl.org/2003/role/presentationRef
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+ Details

Pension Plans and Postretirement Benefit Plan

6 Months Ended

Jun. 30, 2017

Compensation and Retirement Disclosure [Abstract]

Pension Plans and Postretirement Benefit Plan

Components of net periodic benefit cost for the Company’s pension plans and the postretirement benefit plan are presented in the following table for the three and six months ended June 30, 2017 and 2016.



	Pension Benefits						Postretirement Benefits
(dollars in thousands)	2017			2016			2017			2016
Three Months Ended June 30,
Service Cost	$	—		$	—		$	123		$	137
Interest Cost	1,161			1,209			272			294
Expected Return on Plan Assets	(1,238		)	(1,281		)	—			—
Amortization of:
Prior Service Credit	—			—			(80		)	(80		)
Net Actuarial Losses (Gains)	432			388			(110		)	(76		)
Net Periodic Benefit Cost	$	355		$	316		$	205		$	275

Six Months Ended June 30,
Service Cost	$	—		$	—		$	246		$	274
Interest Cost	2,322			2,418			544			588
Expected Return on Plan Assets	(2,476		)	(2,562		)	—			—
Amortization of:
Prior Service Credit	—			—			(161		)	(161		)
Net Actuarial Losses (Gains)	865			777			(220		)	(151		)
Net Periodic Benefit Cost	$	711		$	633		$	409		$	550

The net periodic benefit cost for the Company’s pension plans and postretirement benefit plan are recorded as a component of salaries and benefits in the consolidated statements of income. For the three and six months ended June 30, 2017, the Company contributed $0.1 million and $0.2 million, respectively, to the pension plans and $0.3 million and $0.5 million, respectively, to the postretirement benefit plan. The Company expects to contribute a total of $10.5 million to the pension plans and $1.0 million to the postretirement benefit plan for the year ending December 31, 2017.

Derivative Financial Instruments

6 Months Ended

Jun. 30, 2017

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Derivative Financial Instruments

The notional amount and fair value of the Company’s derivative financial instruments as of June 30, 2017 and December 31, 2016 were as follows:



		June 30, 2017						December 31, 2016
(dollars in thousands)	Notional Amount			Fair Value			Notional Amount			Fair Value
Interest Rate Lock Commitments		$	52,710	$	1,039			$	55,223	$	1,067
Forward Commitments		59,169		39				104,962		847
Interest Rate Swap Agreements
Receive Fixed/Pay Variable Swaps		382,524		2,405				357,441		1,381
Pay Fixed/Receive Variable Swaps		382,524		(2,075		)		357,441		(1,395		)
Foreign Exchange Contracts		42,172		(151		)		38,172		(757		)

The following table presents the Company’s derivative financial instruments, their fair values, and their location in the consolidated statements of condition as of June 30, 2017 and December 31, 2016:



Derivative Financial Instruments	June 30, 2017				December 31, 2016
Not Designated as Hedging Instruments ¹	Asset		Liability		Asset		Liability
(dollars in thousands)	Derivatives		Derivatives		Derivatives		Derivatives
Interest Rate Lock Commitments	$	1,042	$	3	$	1,236	$	169
Forward Commitments	126		87		873		26
Interest Rate Swap Agreements	10,974		10,644		11,569		11,583
Foreign Exchange Contracts	141		292		53		810
Total	$	12,283	$	11,026	$	13,731	$	12,588


¹	Asset derivatives are included in other assets and liability derivatives are included in other liabilities in the consolidated statements of condition.

The following table presents the Company’s derivative financial instruments and the amount and location of the net gains or losses recognized in the consolidated statements of income for the three and six months ended June 30, 2017 and 2016:



	Location of
Derivative Financial Instruments	Net Gains (Losses)	Three Months Ended						Six Months Ended
Not Designated as Hedging Instruments	Recognized in the	June 30,						June 30,
(dollars in thousands)	Statements of Income	2017			2016			2017			2016
Interest Rate Lock Commitments	Mortgage Banking	$	1,655		$	2,973		$	2,922		$	3,959
Forward Commitments	Mortgage Banking	(465		)	(1,017		)	(889		)	(1,496		)
Interest Rate Swap Agreements	Other Noninterest Income	525			713			680			822
Foreign Exchange Contracts	Other Noninterest Income	796			764			1,846			1,473
Total		$	2,511		$	3,433		$	4,559		$	4,758

Management has received authorization from the Bank’s Board of Directors to use derivative financial instruments as an end-user in connection with the Bank’s risk management activities and to accommodate the needs of the Bank’s customers. As with any financial instrument, derivative financial instruments have inherent risks. Market risk is defined as the risk of adverse financial impact due to fluctuations in interest rates, foreign exchange rates, and equity prices. Market risks associated with derivative financial instruments are balanced with the expected returns to enhance earnings performance and shareholder value, while limiting the volatility of each. The Company uses various processes to monitor its overall market risk exposure, including sensitivity analysis, value-at-risk calculations, and other methodologies.

Derivative financial instruments are also subject to credit and counterparty risk, which is defined as the risk of financial loss if a borrower or counterparty is either unable or unwilling to repay borrowings or settle transactions in accordance with the underlying contractual terms. Credit and counterparty risks associated with derivative financial instruments are similar to those relating to traditional financial instruments. The Company manages derivative credit and counterparty risk by evaluating the creditworthiness of each borrower or counterparty, adhering to the same credit approval process used for commercial lending activities.

As of June 30, 2017 and December 31, 2016, the Company did not designate any derivative financial instruments as formal hedging relationships. The Company’s free-standing derivative financial instruments are required to be carried at their fair value on the Company’s consolidated statements of condition. These financial instruments have been limited to interest rate lock commitments (“IRLCs”), forward commitments, interest rate swap agreements, foreign exchange contracts, and conversion rate swap agreements.

The Company enters into IRLCs for residential mortgage loans which commit us to lend funds to a potential borrower at a specific interest rate and within a specified period of time. IRLCs that relate to the origination of mortgage loans that will be held for sale are considered derivative financial instruments under applicable accounting guidance. Outstanding IRLCs expose the Company to the risk that the price of the mortgage loans underlying the commitments may decline due to increases in mortgage interest rates from inception of the rate lock to the funding of the loan. To mitigate this risk, the Company utilizes forward commitments as economic hedges against the potential decreases in the values of the loans held for sale. IRLCs and forward commitments are free-standing derivatives which are carried at fair value with changes recorded in the mortgage banking component of noninterest income in the Company’s consolidated statements of income.

The Company enters into interest rate swap agreements to facilitate the risk management strategies of a small number of commercial banking customers. The Company mitigates the interest rate risk of entering into these agreements by entering into equal and offsetting interest rate swap agreements with highly rated third party financial institutions. The interest rate swap agreements are free-standing derivatives and are recorded at fair value in the Company’s consolidated statements of condition. Fair value changes are recorded in other noninterest income in the Company’s consolidated statements of income. The Company is party to master netting arrangements with its financial institution counterparties; however, the Company does not offset assets and liabilities under these arrangements for financial statement presentation purposes. Collateral, usually in the form of cash or marketable securities, is posted by the counterparty with net liability positions in accordance with contract thresholds. See Note 6 Balance Sheet Offsetting for more information.

The Company’s interest rate swap agreements with financial institution counterparties may contain credit-risk-related contingent features tied to a specified credit rating of the Company. Under these provisions, should the Company’s specified rating fall below a particular level (e.g., investment grade rating), or if the Company no longer obtains the specified rating, the counterparty may require the Company to pledge collateral on an immediate and ongoing basis (subject to the requirement that such swaps are in a net liability position beyond the level specified in the contract), or require immediate settlement of the swap agreement. Other credit-risk-related contingent features may also allow the counterparty to require immediate settlement of the swap agreement if the Company fails to maintain a specified minimum level of capitalization.

With regard to derivative contracts not centrally cleared through a clearinghouse, new regulations require collateral to be posted by the party with a net liability position (i.e., the threshold for posting collateral was reduced to zero, subject to certain minimum transfer amounts). The requirements generally apply to new derivative contracts entered into after the applicable compliance date of the regulation (March 1, 2017 for the Company), although certain counterparties may elect to apply lower thresholds to existing contracts.

Parties to a centrally cleared over-the-counter derivative exchange daily payments that reflect the daily change in value of the derivative. These payments are commonly referred to as variation margin. Historically, variation margin payments have typically been treated as collateral against the derivative position. Effective 2017, the Chicago Mercantile Exchange and LCH.Clearnet Limited (collectively, the “clearinghouses”) amended their rulebooks to legally characterize variation margin payments for over-the-counter derivatives they clear as settlements of the derivatives’ mark-to-market exposure rather than collateral against the exposures. This rule change effectively results in any derivative cleared through the clearinghouses to have a fair value that approximates zero on a daily basis. During the second quarter of 2017, the Company executed its first swap agreements cleared through the clearinghouses. As of June 30, 2017, the application of the rule change reduced the swap agreement liability by $0.4 million, as reflected in the table above. Going forward, the Company expects most of the swap agreements executed with third party financial institutions will be required to be cleared through the clearinghouses. The uncleared swap agreements executed with third party financial institutions will remain subject to the collateral requirements and credit-risk-related contingent features described in the previous paragraphs, and therefore, are not subject to the variation margin rule change. Likewise, the swap agreements executed with the Company’s commercial banking customers will remain uncleared and will also not be subject to the variation margin rule change.

The Company utilizes foreign exchange contracts to offset risks related to transactions executed on behalf of customers. The foreign exchange contracts are free-standing derivatives which are carried at fair value with changes included in other noninterest income in the Company’s consolidated statements of income.

As each sale of Visa Class B restricted shares was completed, the Company entered into a conversion rate swap agreement with the buyer that requires payment to the buyer in the event Visa further reduces the conversion ratio of Class B into Class A unrestricted common shares. In the event of Visa increasing the conversion ratio, the buyer would be required to make payment to the Company. As of June 30, 2017, the conversion rate swap agreement was valued at zero (i.e., no contingent liability recorded) as further reductions to the conversion ratio were deemed neither probable nor reasonably estimable by management. See Note 2 Investment Securities for more information.

- Definition

The entire disclosure for derivative instruments and hedging activities including, but not limited to, risk management strategies, non-hedging derivative instruments, assets, liabilities, revenue and expenses, and methodologies and assumptions used in determining the amounts.

+ References

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-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=64837297&loc=d3e41638-113959

Reference 19: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(n))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

+ Details

Commitments, Contingencies, and Guarantees

6 Months Ended

Jun. 30, 2017

Commitments and Contingencies Disclosure [Abstract]

Commitments, Contingencies, and Guarantees

The Company’s credit commitments as of June 30, 2017 and December 31, 2016 were as follows:



(dollars in thousands)	June 30, 2017		December 31, 2016
Unfunded Commitments to Extend Credit	$	2,800,247	$	2,732,734
Standby Letters of Credit	120,070		112,830
Commercial Letters of Credit	17,219		16,269
Total Credit Commitments	$	2,937,536	$	2,861,833

Unfunded Commitments to Extend Credit

Commitments to extend credit are agreements to lend to a customer as long as there is no violation of the terms or conditions established in the contract. Commitments generally have fixed expiration dates or other termination clauses and may require payment of a fee. Since commitments may expire without being drawn, the total commitment amount does not necessarily represent future cash requirements.

Standby and Commercial Letters of Credit

Standby letters of credit are conditional commitments issued by the Company to guarantee the performance of a customer to a third party. Standby letters of credit generally become payable upon the failure of the customer to perform according to the terms of the underlying contract with the third party, while commercial letters of credit are issued specifically to facilitate commerce and typically result in the commitment being drawn on when the underlying transaction is consummated between the customer and a third party. The contractual amount of these letters of credit represents the maximum potential future payments guaranteed by the Company. The Company has recourse against the customer for any amount it is required to pay to a third party under a standby letter of credit, and generally holds cash or deposits as collateral on those standby letters of credit for which collateral is deemed necessary.

Contingencies

The Company is subject to various pending and threatened legal proceedings arising within the normal course of business or operations. On at least a quarterly basis, the Company assesses its liabilities and contingencies in connection with outstanding legal proceedings utilizing the most recent information available. On a case-by-case basis, reserves are established for those legal claims for which it is probable that a loss will be incurred and the amount of such loss can be reasonably estimated. Based on information currently available, management believes that the eventual outcome of these claims against the Company will not be materially in excess of such amounts reserved by the Company. However, in the event of unexpected future developments, it is possible that the ultimate resolution of these matters may result in a loss that materially exceeds the reserves established by the Company.

Risks Related to Representation and Warranty Provisions

The Company sells residential mortgage loans in the secondary market primarily to the Federal National Mortgage Association (“Fannie Mae”). The Company also pools Federal Housing Administration (“FHA”) insured and U.S. Department of Veterans Affairs (“VA”) guaranteed residential mortgage loans for sale to the Government National Mortgage Corporation (“Ginnie Mae”). These pools of FHA-insured and VA-guaranteed residential mortgage loans are securitized by Ginnie Mae. The agreements under which the Company sells residential mortgage loans to Fannie Mae or Ginnie Mae and the insurance or guaranty agreements with FHA and VA contain provisions that include various representations and warranties regarding the origination and characteristics of the residential mortgage loans. Although the specific representations and warranties vary among investors, insurance or guarantee agreements, they typically cover ownership of the loan, validity of the lien securing the loan, the absence of delinquent taxes or liens against the property securing the loan, compliance with loan criteria set forth in the applicable agreement, compliance with applicable federal, state, and local laws, and other matters. As of June 30, 2017, the unpaid principal balance of residential mortgage loans sold by the Company was $2.6 billion. The agreements under which the Company sells residential mortgage loans require delivery of various documents to the investor or its document custodian. Although these loans are primarily sold on a non-recourse basis, the Company may be obligated to repurchase residential mortgage loans or reimburse investors for losses incurred if a loan review reveals that underwriting and documentation standards were not met. Some agreements may require the Company to repurchase delinquent loans. Upon receipt of a repurchase request, the Company works with investors or insurers to arrive at a mutually agreeable resolution. Repurchase demands are typically reviewed on an individual loan-by-loan basis to validate the claims made by the investor or insurer and to determine if a contractually required repurchase event has occurred. The Company manages the risk associated with potential repurchases or other forms of settlement through its underwriting and quality assurance practices and by servicing mortgage loans to meet investor and secondary market standards. During the six months ended June 30, 2017, there was one residential mortgage loan repurchased with an aggregate unpaid principal balance of $0.2 million as a result of the representation and warranty provisions contained in these contracts. As of June 30, 2017, there were no pending repurchase requests related to representation and warranty provisions.

Risks Relating to Residential Mortgage Loan Servicing Activities

In addition to servicing loans in the Company’s portfolio, substantially all of the loans the Company sells to investors are sold with servicing rights retained. The Company also services loans originated by other mortgage loan originators. As servicer, the Company’s primary duties are to: (1) collect payments due from borrowers; (2) advance certain delinquent payments of principal and interest; (3) maintain and administer any hazard, title, or primary mortgage insurance policies relating to the mortgage loans; (4) maintain any required escrow accounts for payment of taxes and insurance and administer escrow payments; and (5) foreclose on defaulted mortgage loans or, to the extent consistent with the documents governing a securitization, consider alternatives to foreclosure, such as loan modifications or short sales. Each agreement under which the Company acts as servicer generally specifies a standard of responsibility for actions taken by the Company in such capacity and provides protection against expenses and liabilities incurred by the Company when acting in compliance with the respective servicing agreements. However, if the Company commits a material breach of obligations as servicer, the Company may be subject to termination if the breach is not cured within a specified period following notice. The standards governing servicing and the possible remedies for violations of such standards vary by investor. These standards and remedies are determined by servicing guides issued by the investors as well as the contract provisions established between the investors and the Company. Remedies could include repurchase of an affected loan. For the six months ended June 30, 2017, there were no loans repurchased related to loan servicing activities. As of June 30, 2017, there were no pending repurchase requests related to loan servicing activities.

Although to date repurchase requests related to representation and warranty provisions and servicing activities have been limited, it is possible that requests to repurchase mortgage loans may increase in frequency as investors more aggressively pursue all means of recovering losses on their purchased loans. However, as of June 30, 2017, management believes that this exposure is not material due to the historical level of repurchase requests and loss trends and thus has not established a liability for losses related to mortgage loan repurchases. As of June 30, 2017, 99% of the Company’s residential mortgage loans serviced for investors were current. The Company maintains ongoing communications with investors and continues to evaluate this exposure by monitoring the level and number of repurchase requests as well as the delinquency rates in the loans sold to investors.

Fair Value of Assets and Liabilities

6 Months Ended

Jun. 30, 2017

Fair Value Disclosures [Abstract]

Fair Value of Assets and Liabilities

Fair Value Hierarchy

Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability in the principal or most advantageous market for an asset or liability in an orderly transaction between market participants at the measurement date. GAAP established a fair value hierarchy that prioritizes the use of inputs used in valuation methodologies into the following three levels:



Level 1:	Inputs to the valuation methodology are quoted prices, unadjusted, for identical assets or liabilities in active markets. A quoted price in an active market provides the most reliable evidence of fair value and is used to measure fair value whenever available. A contractually binding sales price also provides reliable evidence of fair value.

Level 2:	Inputs to the valuation methodology include quoted prices for similar assets or liabilities in active markets; inputs to the valuation methodology include quoted prices for identical or similar assets or liabilities in markets that are not active; or inputs to the valuation methodology that utilize model-based techniques for which all significant assumptions are observable in the market.

Level 3:	Inputs to the valuation methodology are unobservable and significant to the fair value measurement; inputs to the valuation methodology that utilize model-based techniques for which significant assumptions are not observable in the market; or inputs to the valuation methodology that require significant management judgment or estimation, some of which may be internally developed.

Management maximizes the use of observable inputs and minimizes the use of unobservable inputs when determining fair value measurements. Management reviews and updates the fair value hierarchy classifications of the Company’s assets and liabilities on a quarterly basis.

Assets and Liabilities Measured at Fair Value on a Recurring Basis

Investment Securities Available-for-Sale

Fair values of investment securities available-for-sale were primarily measured using information from a third-party pricing service. This service provides pricing information by utilizing evaluated pricing models supported with market data information. Standard inputs include benchmark yields, reported trades, broker/dealer quotes, issuer spreads, two-sided markets, benchmark securities, bids, offers, and reference data from market research publications. Level 1 investment securities are comprised of debt securities issued by the U.S. Treasury, as quoted prices were available, unadjusted, for identical securities in active markets. Level 2 investment securities were primarily comprised of debt securities issued by the Small Business Administration, states and municipalities, corporations, as well as mortgage-backed securities issued by government agencies and government-sponsored enterprises. Fair values were estimated primarily by obtaining quoted prices for similar assets in active markets or through the use of pricing models. In cases where there may be limited or less transparent information provided by the Company’s third-party pricing service, fair value may be estimated by the use of secondary pricing services or through the use of non-binding third-party broker quotes.

On a quarterly basis, management reviews the pricing information received from the Company’s third-party pricing service. This review process includes a comparison to non-binding third-party broker quotes, as well as a review of market-related conditions impacting the information provided by the Company’s third-party pricing service. Management primarily identifies investment securities which may have traded in illiquid or inactive markets by identifying instances of a significant decrease in the volume or frequency of trades, relative to historical levels, as well as instances of a significant widening of the bid-ask spread in the brokered markets. Investment securities that are deemed to have been trading in illiquid or inactive markets may require the use of significant unobservable inputs to determine fair value. As of June 30, 2017 and December 31, 2016, management did not make adjustments to prices provided by the third-party pricing service as a result of illiquid or inactive markets. On a quarterly basis, management also reviews a sample of securities priced by the Company’s third-party pricing service to review the significant assumptions and valuation methodologies used by the service. Based on this review, management determines whether the current placement of the security in the fair value hierarchy is appropriate or whether transfers may be warranted. The Company’s third-party pricing service has also established processes for us to submit inquiries regarding quoted prices. Periodically, we will challenge the quoted prices provided by our third-party pricing service. The Company’s third-party pricing service will review the inputs to the evaluation in light of the new market data presented by us. The Company’s third-party pricing service may then affirm the original quoted price or may update the evaluation on a going-forward basis.

Loans Held for Sale

The fair value of the Company’s residential mortgage loans held for sale was determined based on quoted prices for similar loans in active markets, and therefore, is classified as a Level 2 measurement.

Mortgage Servicing Rights

Mortgage servicing rights do not trade in an active market with readily observable market data. As a result, the Company estimates the fair value of mortgage servicing rights by using a discounted cash flow model to calculate the present value of estimated future net servicing income. The Company stratifies its mortgage servicing portfolio on the basis of loan type. The assumptions used in the discounted cash flow model are those that we believe market participants would use in estimating future net servicing income. Significant assumptions in the valuation of mortgage servicing rights include estimated loan repayment rates, the discount rate, servicing costs, and the timing of cash flows, among other factors. Mortgage servicing rights are classified as Level 3 measurements due to the use of significant unobservable inputs, as well as significant management judgment and estimation.

Other Assets

Other assets recorded at fair value on a recurring basis are primarily comprised of investments related to deferred compensation arrangements. Quoted prices for these investments, primarily in mutual funds, are available in active markets. Thus, the Company’s investments related to deferred compensation arrangements are classified as Level 1 measurements in the fair value hierarchy.

Derivative Financial Instruments

Derivative financial instruments recorded at fair value on a recurring basis are comprised of interest rate lock commitments (“IRLCs”), forward commitments, interest rate swap agreements, foreign exchange contracts, and Visa Class B to Class A shares conversion rate swap agreements. The fair values of IRLCs are calculated based on the value of the underlying loan held for sale, which in turn is based on quoted prices for similar loans in the secondary market. However, this value is adjusted by a factor which considers the likelihood that the loan in a locked position will ultimately close. This factor, the closing ratio, is derived from the Bank’s internal data and is adjusted using significant management judgment. As such, IRLCs are classified as Level 3 measurements. Forward commitments are classified as Level 2 measurements as they are primarily based on quoted prices from the secondary market based on the settlement date of the contracts, interpolated or extrapolated, if necessary, to estimate a fair value as of the end of the reporting period. The fair values of interest rate swap agreements are calculated using a discounted cash flow approach and utilize Level 2 observable inputs such as a market yield curve, effective date, maturity date, notional amount, and stated interest rate. In addition, the Company includes in its fair value calculation a credit factor adjustment which is based primarily on management judgment. Thus, interest rate swap agreements are classified as a Level 3 measurement. The fair values of foreign exchange contracts are calculated using the Bank’s multi-currency accounting system which utilizes contract specific information such as currency, maturity date, contractual amount, and strike price, along with market data information such as the spot rates of specific currency and yield curves. Foreign exchange contracts are classified as Level 2 measurements because while they are valued using the Bank’s multi-currency accounting system, significant management judgment or estimation is not required. The fair value of the Visa Class B restricted shares to Class A unrestricted common shares conversion rate swap agreements represent the amount owed by the Company to the buyer of the Visa Class B shares as a result of a reduction of the conversion ratio subsequent to the sales date. As of June 30, 2017 and December 31, 2016, the conversion rate swap agreements were valued at zero as reductions to the conversion ratio were neither probable nor reasonably estimable by management. See Note 11 Derivative Financial Instruments for more information.

The Company is exposed to credit risk if borrowers or counterparties fail to perform. The Company seeks to minimize credit risk through credit approvals, limits, monitoring procedures, and collateral requirements. The Company generally enters into transactions with borrowers and counterparties that carry high quality credit ratings. Credit risk associated with borrowers or counterparties as well as the Company’s non-performance risk is factored into the determination of the fair value of derivative financial instruments.

The table below presents the balances of assets and liabilities measured at fair value on a recurring basis as of June 30, 2017 and December 31, 2016:



	Quoted Prices in Active Markets for Identical Assets or Liabilities		Significant Other Observable Inputs		Significant Unobservable Inputs
(dollars in thousands)	(Level 1)		(Level 2)		(Level 3)		Total
June 30, 2017
Assets:
Investment Securities Available-for-Sale
Debt Securities Issued by the U.S. Treasury and Government Agencies	$	541	$	432,436	$	—	$	432,977
Debt Securities Issued by States and Political Subdivisions	—		667,881		—		667,881
Debt Securities Issued by Corporations	—		265,249		—		265,249
Mortgage-Backed Securities:
Residential - Government Agencies	—		265,542		—		265,542
Residential - U.S. Government-Sponsored Enterprises	—		609,901		—		609,901
Commercial - Government Agencies	—		75,178		—		75,178
Total Mortgage-Backed Securities	—		950,621		—		950,621
Total Investment Securities Available-for-Sale	541		2,316,187		—		2,316,728
Loans Held for Sale	—		20,354		—		20,354
Mortgage Servicing Rights	—		—		1,548		1,548
Other Assets	25,899		—		—		25,899
Derivatives ¹	—		267		12,016		12,283
Total Assets Measured at Fair Value on a Recurring Basis as of June 30, 2017	$	26,440	$	2,336,808	$	13,564	$	2,376,812

Liabilities:
Derivatives ¹	$	—	$	379	$	10,647	$	11,026
Total Liabilities Measured at Fair Value on a Recurring Basis as of June 30, 2017	$	—	$	379	$	10,647	$	11,026

December 31, 2016
Assets:
Investment Securities Available-for-Sale
Debt Securities Issued by the U.S. Treasury and Government Agencies	$	539	$	408,176	$	—	$	408,715
Debt Securities Issued by States and Political Subdivisions	—		671,799		—		671,799
Debt Securities Issued by Corporations	—		269,179		—		269,179
Mortgage-Backed Securities:
Residential - Government Agencies	—		243,844		—		243,844
Residential - U.S. Government-Sponsored Enterprises	—		506,987		—		506,987
Commercial - Government Agencies	—		85,517		—		85,517
Total Mortgage-Backed Securities	—		836,348		—		836,348
Total Investment Securities Available-for-Sale	539		2,185,502		—		2,186,041
Loans Held for Sale	—		62,499		—		62,499
Mortgage Servicing Rights	—		—		1,655		1,655
Other Assets	21,952		—		—		21,952
Derivatives ¹	—		926		12,805		13,731
Total Assets Measured at Fair Value on a Recurring Basis as of December 31, 2016	$	22,491	$	2,248,927	$	14,460	$	2,285,878

Liabilities:
Derivatives ¹	$	—	$	836	$	11,752	$	12,588
Total Liabilities Measured at Fair Value on a Recurring Basis as of December 31, 2016	$	—	$	836	$	11,752	$	12,588


¹	The fair value of each class of derivatives is shown in Note 11 Derivative Financial Instruments.

For the three and six months ended June 30, 2017 and 2016, the changes in Level 3 assets and liabilities measured at fair value on a recurring basis were as follows:



(dollars in thousands)	Mortgage Servicing Rights ¹			Net Derivative Assets and Liabilities ²
Three Months Ended June 30, 2017
Balance as of April 1, 2017	$	1,586		$	1,248
Realized and Unrealized Net Gains (Losses):
Included in Net Income	(38		)	1,640
Transfers to Loans Held for Sale	—			(1,877		)
Variation Margin Payments	—			358
Balance as of June 30, 2017	$	1,548		$	1,369
Total Unrealized Net Gains (Losses) Included in Net Income Related to Assets Still Held as of June 30, 2017	$	—		$	1,369

Three Months Ended June 30, 2016
Balance as of April 1, 2016	$	1,910		$	371
Realized and Unrealized Net Gains (Losses):
Included in Net Income	(91		)	2,883
Transfers to Loans Held for Sale	—			(1,346		)
Balance as of June 30, 2016	$	1,819		$	1,908
Total Unrealized Net Gains (Losses) Included in Net Income Related to Assets Still Held as of June 30, 2016	$	—		$	1,908

Six Months Ended June 30, 2017
Balance as of January 1, 2017	$	1,655		$	1,053
Realized and Unrealized Net Gains (Losses):
Included in Net Income	(107		)	2,908
Transfers to Loans Held for Sale	—			(2,950		)
Variation Margin Payments	—			358
Balance as of June 30, 2017	$	1,548		$	1,369
Total Unrealized Net Gains (Losses) Included in Net Income Related to Assets Still Held as of June 30, 2017	$	—		$	1,369

Six Months Ended June 30, 2016
Balance as of January 1, 2016	$	1,970		$	240
Realized and Unrealized Net Gains (Losses):
Included in Net Income	(151		)	3,854
Transfers to Loans Held for Sale	—			(2,186		)
Balance as of June 30, 2016	$	1,819		$	1,908
Total Unrealized Net Gains (Losses) Included in Net Income Related to Assets Still Held as of June 30, 2016	$	—		$	1,908


¹	Realized and unrealized gains and losses related to mortgage servicing rights are reported as a component of mortgage banking income in the Company’s consolidated statements of income.


²	Realized and unrealized gains and losses related to interest rate lock commitments are reported as a component of mortgage banking income in the Company’s consolidated statements of income. Realized and unrealized gains and losses related to interest rate swap agreements are reported as a component of other noninterest income in the Company’s consolidated statements of income.

For Level 3 assets and liabilities measured at fair value on a recurring or nonrecurring basis as of June 30, 2017 and December 31, 2016, the significant unobservable inputs used in the fair value measurements were as follows:



		Significant Unobservable Inputs (weighted-average)					Fair Value
(dollars in thousands)	Valuation Technique	Description	June 30, 2017		Dec. 31, 2016		June 30, 2017		Dec. 31, 2016
Mortgage Servicing Rights	Discounted Cash Flow	Constant Prepayment Rate ¹	8.60	%	8.13	%	$	27,027	$	26,803
		Discount Rate ²	8.87	%	9.33	%

Net Derivative Assets and Liabilities:
Interest Rate Lock Commitments	Pricing Model	Closing Ratio	92.89	%	92.26	%	$	1,039	$	1,067
Interest Rate Swap Agreements	Discounted Cash Flow	Credit Factor	0.25	%	0.13	%	$	330	$	(14	)


¹	Represents annualized loan repayment rate assumption.


²	Derived from multiple interest rate scenarios that incorporate a spread to a market yield curve and market volatilities.

The significant unobservable inputs used in the fair value measurement of the Company’s mortgage servicing rights are the weighted-average constant prepayment rate and weighted-average discount rate. Significant increases (decreases) in any of those inputs in isolation could result in a significantly lower (higher) fair value measurement. Although the constant prepayment rate and the discount rate are not directly interrelated, they generally move in opposite directions of each other.

The Company estimates the fair value of mortgage servicing rights by using a discounted cash flow model to calculate the present value of estimated future net servicing income. The Company’s Treasury Division enters observable and unobservable inputs into the model to arrive at an estimated fair value. To assess the reasonableness of the fair value measurement, the Treasury Division performs a back-test by applying the model to historical prepayment data. The fair value and constant prepayment rate are also compared to forward-looking estimates to assess reasonableness. The Treasury Division also compares the fair value of the Company’s mortgage servicing rights to a value calculated by an independent third party. Discussions are held with members from the Treasury, Mortgage Banking, and Controllers Divisions, along with the independent third party to discuss and reconcile the fair value estimates and key assumptions used by the respective parties in arriving at those estimates. A subcommittee of the Company’s Asset/Liability Management Committee is responsible for providing oversight over the valuation methodology and key assumptions.

The significant unobservable input used in the fair value measurement of the Company’s IRLCs is the closing ratio, which represents the percentage of loans currently in a lock position which management estimates will ultimately close. Generally, the fair value of an IRLC is positive (negative) if the prevailing interest rate is lower (higher) than the IRLC rate. Therefore, an increase in the closing ratio (i.e., higher percentage of loans are estimated to close) will increase the gain or loss. The closing ratio is largely dependent on the loan processing stage that a loan is currently in and the change in prevailing interest rates from the time of the rate lock. The closing ratio is computed by our secondary marketing system using historical data and the ratio is periodically reviewed by the Company’s Secondary Marketing Department of the Mortgage Banking Division for reasonableness.

The unobservable input used in the fair value measurement of the Company’s interest rate swap agreements is the credit factor. This factor represents the risk that a counterparty is either unable or unwilling to settle a transaction in accordance with the underlying contractual terms. A significant increase (decrease) in the credit factor could result in a significantly lower (higher) fair value measurement. The credit factor is determined by the Treasury Division based on the risk rating assigned to each counterparty in which the Company holds a net asset position. The Company’s Credit Policy Committee periodically reviews and approves the Expected Default Frequency of the Economic Capital Model for Credit Risk. The Expected Default Frequency is used as the credit factor for interest rate swap agreements.

Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis

The Company may be required periodically to measure certain assets and liabilities at fair value on a nonrecurring basis in accordance with GAAP. These adjustments to fair value usually result from the application of lower-of-cost-or-fair value accounting or impairment write-downs of individual assets. The following table represents the assets measured at fair value on a nonrecurring basis as of June 30, 2017. There were no assets measured at fair value on a nonrecurring basis as of December 31, 2016.



(dollars in thousands)	Fair Value Hierarchy	Net Carrying Amount		Valuation Allowance
June 30, 2017
Mortgage Servicing Rights - amortization method	Level 3	$	22,923	$	53

The write-down of mortgage servicing rights accounted for under the amortization method was primarily due to changes in certain key assumptions used to estimate fair value. As previously mentioned, all of the Company's mortgage servicing rights are classified as Level 3 measurements due to the use of significant unobservable inputs, as well as significant management judgment and estimation.

Fair Value Option

The Company elects the fair value option for all residential mortgage loans held for sale. This election allows for a more effective offset of the changes in fair values of the loans held for sale and the derivative financial instruments used to financially hedge them without having to apply complex hedge accounting requirements. As noted above, the fair value of the Company’s residential mortgage loans held for sale was determined based on quoted prices for similar loans in active markets.

The following table reflects the difference between the aggregate fair value and the aggregate unpaid principal balance of the Company’s residential mortgage loans held for sale as of June 30, 2017 and December 31, 2016.



(dollars in thousands)	Aggregate Fair Value		Aggregate Unpaid Principal			Aggregate Fair Value Less Aggregate Unpaid Principal
June 30, 2017
Loans Held for Sale	$	20,354		$	19,987		$	367

December 31, 2016
Loans Held for Sale	$	62,499		$	61,782		$	717

Changes in the estimated fair value of residential mortgage loans held for sale are reported as a component of mortgage banking income in the Company’s consolidated statements of income. For the three and six months ended June 30, 2017 and 2016, the net gains or losses from the change in fair value of the Company’s residential mortgage loans held for sale were not material.

Financial Instruments Not Recorded at Fair Value on a Recurring Basis

The assumptions used below are expected to approximate those that market participants would use in valuing these financial instruments.

Investment Securities Held-to-Maturity

The fair value of the Company’s investment securities held-to-maturity was primarily measured using information from a third-party pricing service. Level 1 investment securities are comprised of debt securities issued by the U.S. Treasury as quoted prices were available, unadjusted, for identical securities in active markets. If quoted prices were not available, fair values were estimated primarily by obtaining quoted prices for similar assets in active markets or through the use of pricing models. In cases where there may be limited or less transparent information provided by the Company’s third-party pricing service, fair value may be estimated by the use of secondary pricing services or through the use of non-binding third-party broker quotes.

Loans

The fair value of the Company’s loans was estimated by discounting the expected future cash flows using the current interest rates at which similar loans would be made to borrowers with similar credit ratings and for the same remaining maturities. Loans were first segregated by type such as commercial, real estate, and consumer, and were then further segmented into fixed and variable rate. Expected future cash flows were projected based on contractual cash flows, adjusted for estimated prepayments.

Time Deposits

The fair value of the Company’s time deposits was calculated using discounted cash flow analyses, applying discount rates based on market yield curve rates for similar maturities. The fair values of the Company’s time deposit liabilities do not take into consideration the value of the Company’s long-term relationships with depositors, which may have significant value.

Securities Sold Under Agreements to Repurchase

The fair value of the Company’s securities sold under agreements to repurchase was calculated using discounted cash flow analyses, applying discount rates based on market yield curve rates for similar maturities.

Other Debt

The fair value of the Company’s other debt was calculated using a discounted cash flow analyses, applying discount rates based on market yield curve rates for similar maturities.

The following presents the carrying amount, fair value, and placement in the fair value hierarchy of the Company’s financial instruments not recorded at fair value on a recurring basis as of June 30, 2017 and December 31, 2016. This table excludes financial instruments for which the carrying amount approximates fair value. For short-term financial assets such as cash and cash equivalents, the carrying amount is a reasonable estimate of fair value due to the relatively short time between the origination of the instrument and its expected realization. For non-marketable equity securities such as Federal Home Loan Bank and Federal Reserve Bank stock, the carrying amount is a reasonable estimate of fair value as these securities can only be redeemed or sold at their par value and only to the respective issuing government supported institution or to another member institution. For financial liabilities such as noninterest-bearing demand, interest-bearing demand, and savings deposits, the carrying amount is a reasonable estimate of fair value due to these products having no stated maturity.



					Fair Value Measurements
	Carrying				Quoted Prices in Active Markets for Identical Assets or Liabilities		Significant Other Observable Inputs		Significant Unobservable Inputs
(dollars in thousands)	Amount		Fair Value		(Level 1)		(Level 2)		(Level 3)
June 30, 2017
Financial Instruments - Assets
Investment Securities Held-to-Maturity	$	3,782,702	$	3,785,641	$	499,838	$	3,285,803	$	—
Loans ¹	9,012,433		9,177,640		—		—		9,177,640

Financial Instruments - Liabilities
Time Deposits	1,683,947		1,679,427		—		1,679,427		—
Securities Sold Under Agreements to Repurchase	505,292		505,271		—		505,271		—
Other Debt ²	257,153		256,654		—		256,654		—

December 31, 2016
Financial Instruments - Assets
Investment Securities Held-to-Maturity	$	3,832,997	$	3,827,527	$	530,940	$	3,296,587	$	—
Loans ¹	8,583,726		8,743,191		—		—		8,743,191

Financial Instruments - Liabilities
Time Deposits	1,217,707		1,213,705		—		1,213,705		—
Securities Sold Under Agreements to Repurchase	523,378		523,374		—		523,374		—
Other Debt ²	257,153		256,718		—		256,718		—


¹	Net of unearned income and the Allowance.


²	Excludes capitalized lease obligations.

- Definition

The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information.

+ References + Details

Summary of Significant Accounting Policies (Policies)	6 Months Ended
Summary of Significant Accounting Policies (Policies)	Jun. 30, 2017
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation Bank of Hawaii Corporation (the “Parent”) is a Delaware corporation and a bank holding company headquartered in Honolulu, Hawaii. Bank of Hawaii Corporation and its subsidiaries (collectively, the “Company”) provide a broad range of financial products and services to customers in Hawaii, Guam, and other Pacific Islands. The accompanying consolidated financial statements include the accounts of the Parent and its subsidiaries. The Parent’s principal operating subsidiary is Bank of Hawaii (the “Bank”). The consolidated financial statements in this report have not been audited by an independent registered public accounting firm, but in the opinion of management, reflect all adjustments necessary for a fair presentation of the results for the interim periods. All such adjustments are of a normal recurring nature. Intercompany accounts and transactions have been eliminated in consolidation. Certain prior period information has been reclassified to conform to the current period presentation. Operating results for the interim periods disclosed herein are not necessarily indicative of the results that may be expected for the full fiscal year or for any future period. The accompanying consolidated financial statements have been prepared in accordance with U.S. generally accepted accounting principles (“GAAP”) for interim financial information and with the instructions to Form 10-Q and Rule 10-01 of Regulation S-X. Accordingly, they do not include all of the information and accompanying notes required by GAAP for complete financial statements and should be read in conjunction with the audited consolidated financial statements and related notes included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2016.
Use of Estimates in the Preparation of Financial Statements	Use of Estimates in the Preparation of Financial Statements The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts in the financial statements and accompanying notes. Actual results may differ from those estimates and such differences could be material to the financial statements.
Variable Interest Entities	Variable Interest Entities Variable interests are defined as contractual ownership or other interests in an entity that change with fluctuations in an entity’s net asset value. The primary beneficiary consolidates the variable interest entity (“VIE”). The primary beneficiary is defined as the enterprise that has both the power to direct the activities of the VIE that most significantly impact the entity’s economic performance and the obligation to absorb losses or the right to receive benefits that could be significant to the VIE. The Company has limited partnership interests in several low-income housing partnerships. These partnerships provide funds for the construction and operation of apartment complexes that provide affordable housing to lower-income households. If these developments successfully attract a specified percentage of residents falling in that lower-income range, state and/or federal income tax credits are made available to the partners. The tax credits are generally recognized over 10 years. In order to continue receiving the tax credits each year over the life of the partnership, the low-income residency targets must be maintained. Prior to January 1, 2015, the Company utilized the effective yield method whereby the Company recognized tax credits generally over 10 years and amortized the initial cost of the investment to provide a constant effective yield over the period that tax credits are allocated to the Company. On January 1, 2015, the Company adopted ASU No. 2014-01, “Accounting for Investments in Qualified Affordable Housing Projects” prospectively for new investments. ASU No. 2014-01 permits reporting entities to make an accounting policy election to account for their investments in qualified affordable housing projects using the proportional amortization method if certain conditions are met. As permitted by ASU No. 2014-01, the Company elected to continue to utilize the effective yield method for investments made prior to January 1, 2015. Unfunded commitments to fund these low-income housing partnerships were $18.1 million and $16.2 million as of June 30, 2017 and December 31, 2016, respectively. These unfunded commitments are unconditional and legally binding and are recorded in other liabilities in the consolidated statements of condition. See Note 5 Affordable Housing Projects Tax Credit Partnerships for more information. The Company also has limited partnership interests in solar energy tax credit partnership investments. These partnerships develop, build, own and operate solar renewable energy projects. Over the course of these investments, the Company expects to receive federal and state tax credits, tax-related benefits, and excess cash available for distribution, if any. The Company may be called to sell its interest in the limited partnerships through a call option once all investment tax credits have been recognized. Tax benefits associated with these investments are generally recognized over six years. These entities meet the definition of a VIE; however, the Company is not the primary beneficiary of the entities as the general partner has both the power to direct the activities that most significantly impact the economic performance of the entities and the obligation to absorb losses or the right to receive benefits that could be significant to the entities. While the partnership agreements allow the limited partners, through a majority vote, to remove the general partner, this right is not deemed to be substantive as the general partner can only be removed for cause. The investments in these entities are initially recorded at cost, which approximates the maximum exposure to loss as a result of the Company’s involvement with these unconsolidated entities. The balance of the Company’s investments in these entities was $77.5 million and $78.9 million as of June 30, 2017 and December 31, 2016, respectively, and is included in other assets in the consolidated statements of condition.
Accounting Standards Adopted in the Current Year or Pending Adoption	Accounting Standards Adopted in 2017 In March 2016, the FASB issued ASU No. 2016-09, “Improvements to Employee Share-Based Payment Accounting.” This ASU includes provisions intended to simplify various aspects related to how share-based payments are accounted for and presented in the financial statements. Some of the key provisions of this new ASU include: (1) companies will no longer record excess tax benefits and certain tax deficiencies in additional paid-in capital (“APIC”). Instead, they will record all excess tax benefits and tax deficiencies as income tax expense or benefit in the income statement, and APIC pools will be eliminated. The guidance also eliminates the requirement that excess tax benefits be realized before companies can recognize them. In addition, the guidance requires companies to present excess tax benefits as an operating activity on the statement of cash flows rather than as a financing activity; (2) increase the amount an employer can withhold to cover income taxes on awards and still qualify for the exception to liability classification for shares used to satisfy the employer’s statutory income tax withholding obligation. The new guidance will also require an employer to classify the cash paid to a tax authority when shares are withheld to satisfy its statutory income tax withholding obligation as a financing activity on its statement of cash flows (current guidance did not specify how these cash flows should be classified); and (3) permit companies to make an accounting policy election for the impact of forfeitures on the recognition of expense for share-based payment awards. Forfeitures can be estimated, as required today, or recognized when they occur. ASU No. 2016-09 is effective for interim and annual reporting periods beginning after December 15, 2016. The Company adopted ASU No. 2016-09 on January 1, 2017 and elected to recognize forfeitures as they occur. As allowed by the ASU, the Company’s adoption was prospective, therefore, prior periods have not been adjusted. The adoption of ASU No. 2016-09 could result in increased volatility to reported income tax expense related to excess tax benefits and tax deficiencies for employee share-based transactions, however, the actual amounts recognized in income tax expense will be dependent on the amount of employee share-based transactions and the stock price at the time of vesting or exercise. For the first six months of 2017, the adoption of ASU No. 2016-09 resulted in a decrease to the provision for income taxes primarily due to the tax benefit from the exercise of stock options and the vesting of restricted stock. Accounting Standards Pending Adoption In May 2014, the FASB and the International Accounting Standards Board (the “IASB”) jointly issued a comprehensive new revenue recognition standard that will supersede nearly all existing revenue recognition guidance under GAAP and International Financial Reporting Standards (“IFRS”). Previous revenue recognition guidance in GAAP consisted of broad revenue recognition concepts together with numerous revenue requirements for particular industries or transactions, which sometimes resulted in different accounting for economically similar transactions. In contrast, IFRS provided limited revenue recognition guidance and, consequently, could be difficult to apply to complex transactions. Accordingly, the FASB and the IASB initiated a joint project to clarify the principles for recognizing revenue and to develop a common revenue standard for U.S. GAAP and IFRS that would: (1) remove inconsistencies and weaknesses in revenue requirements; (2) provide a more robust framework for addressing revenue issues; (3) improve comparability of revenue recognition practices across entities, industries, jurisdictions, and capital markets; (4) provide more useful information to users of financial statements through improved disclosure requirements; and (5) simplify the preparation of financial statements by reducing the number of requirements to which an entity must refer. To meet those objectives, the FASB issued ASU No. 2014-09, “Revenue from Contracts with Customers.” The standard’s core principle is that a company will recognize revenue when it transfers promised goods or services to customers in an amount that reflects the consideration to which the company expects to be entitled in exchange for those goods or services. In doing so, companies generally will be required to use more judgment and make more estimates than under current guidance. These may include identifying performance obligations in the contract, estimating the amount of variable consideration to include in the transaction price and allocating the transaction price to each separate performance obligation. The standard was initially effective for public entities for interim and annual reporting periods beginning after December 15, 2016; early adoption was not permitted. However, in August 2015, the FASB issued ASU No. 2015-14, “Revenue from Contracts with Customers - Deferral of the Effective Date” which deferred the effective date by one year (i.e., interim and annual reporting periods beginning after December 15, 2017). For financial reporting purposes, the standard allows for either full retrospective adoption, meaning the standard is applied to all of the periods presented, or modified retrospective adoption, meaning the standard is applied only to the most current period presented in the financial statements with the cumulative effect of initially applying the standard recognized at the date of initial application. In addition, the FASB has begun to issue targeted updates to clarify specific implementation issues of ASU 2014-09. These updates include ASU No. 2016-08, “Principal versus Agent Considerations (Reporting Revenue Gross versus Net),” ASU No. 2016-10, “Identifying Performance Obligations and Licensing,” ASU No. 2016-12, “Narrow-Scope Improvements and Practical Expedients,” and ASU No. 2016-20 “Technical Corrections and Improvements to Topic 606, Revenue from Contracts with Customers.” Since the guidance does not apply to revenue associated with financial instruments, including loans and securities that are accounted for under other GAAP, the Company does not expect the new guidance to have a material impact on revenue most closely associated with financial instruments, including interest income and expense. The Company is continuing its overall assessment of revenue streams and reviewing contracts potentially affected by the ASU including trust and asset management fees, deposit related fees, interchange fees, and merchant income, to determine the potential impact the new guidance is expected to have on the Company’s Consolidated Financial Statements. In addition, the Company continues to follow certain implementation issues relevant to the banking industry which are still pending resolution. The Company plans to adopt ASU No. 2014-09 on January 1, 2018 utilizing the modified retrospective approach. In January 2016, the FASB issued ASU No. 2016-01, “Recognition and Measurement of Financial Assets and Financial Liabilities.” This ASU addresses certain aspects of recognition, measurement, presentation, and disclosure of financial instruments by making targeted improvements to GAAP as follows: (1) require equity investments (except those accounted for under the equity method of accounting or those that result in consolidation of the investee) to be measured at fair value with changes in fair value recognized in net income. However, an entity may choose to measure equity investments that do not have readily determinable fair values at cost minus impairment, if any, plus or minus changes resulting from observable price changes in orderly transactions for the identical or a similar investment of the same issuer; (2) simplify the impairment assessment of equity investments without readily determinable fair values by requiring a qualitative assessment to identify impairment. When a qualitative assessment indicates that impairment exists, an entity is required to measure the investment at fair value; (3) eliminate the requirement to disclose the fair value of financial instruments measured at amortized cost for entities that are not public business entities; (4) eliminate the requirement for public business entities to disclose the method(s) and significant assumptions used to estimate the fair value that is required to be disclosed for financial instruments measured at amortized cost on the balance sheet; (5) require public business entities to use the exit price notion when measuring the fair value of financial instruments for disclosure purposes; (6) require an entity to present separately in other comprehensive income the portion of the total change in the fair value of a liability resulting from a change in the instrument-specific credit risk when the entity has elected to measure the liability at fair value in accordance with the fair value option for financial instruments; (7) require separate presentation of financial assets and financial liabilities by measurement category and form of financial asset (that is, securities or loans and receivables) on the balance sheet or the accompanying notes to the financial statements; and (8) clarify that an entity should evaluate the need for a valuation allowance on a deferred tax asset related to available-for-sale securities in combination with the entity’s other deferred tax assets. ASU No. 2016-01 is effective for interim and annual reporting periods beginning after December 15, 2017. Early application is permitted as of the beginning of the fiscal year of adoption only for provisions (3) and (6) above. Early adoption of the other provisions mentioned above is not permitted. The Company has performed a preliminary evaluation of the provisions of ASU No. 2016-01. Based on this evaluation, the Company has determined that ASU No. 2016-01 is not expected to have a material impact on the Company’s Consolidated Financial Statements; however, the Company will continue to closely monitor developments and additional guidance. In February 2016, the FASB issued ASU No. 2016-02, “Leases.” Under the new guidance, lessees will be required to recognize the following for all leases (with the exception of short-term leases): 1) a lease liability, which is the present value of a lessee’s obligation to make lease payments, and 2) a right-of-use asset, which is an asset that represents the lessee’s right to use, or control the use of, a specified asset for the lease term. Lessor accounting under the new guidance remains largely unchanged as it is substantially equivalent to existing guidance for sales-type leases, direct financing leases, and operating leases. Leveraged leases have been eliminated, although lessors can continue to account for existing leveraged leases using the current accounting guidance. Other limited changes were made to align lessor accounting with the lessee accounting model and the new revenue recognition standard. All entities will classify leases to determine how to recognize lease-related revenue and expense. Quantitative and qualitative disclosures will be required by lessees and lessors to meet the objective of enabling users of financial statements to assess the amount, timing, and uncertainty of cash flows arising from leases. The intention is to require enough information to supplement the amounts recorded in the financial statements so that users can understand more about the nature of an entity’s leasing activities. ASU No. 2016-02 is effective for interim and annual reporting periods beginning after December 15, 2018; early adoption is permitted. All entities are required to use a modified retrospective approach for leases that exist or are entered into after the beginning of the earliest comparative period in the financial statements. They have the option to use certain relief; full retrospective application is prohibited. The Company has several lease agreements, such as branch locations, which are currently considered operating leases, and therefore, not recognized on the Company’s consolidated statements of condition. The Company expects the new guidance will require these lease agreements to now be recognized on the consolidated statements of condition as a right-of-use asset and a corresponding lease liability. Therefore, the Company’s preliminary evaluation indicates the provisions of ASU No. 2016-02 are expected to impact the Company’s consolidated statements of condition. However, the Company continues to evaluate the extent of potential impact the new guidance will have on the Company’s Consolidated Financial Statements. In June 2016, the FASB issued ASU No. 2016-13, “Measurement of Credit Losses on Financial Instruments.” This ASU significantly changes how entities will measure credit losses for most financial assets and certain other instruments that aren’t measured at fair value through net income. In issuing the standard, the FASB is responding to criticism that today’s guidance delays recognition of credit losses. The standard will replace today’s “incurred loss” approach with an “expected loss” model. The new model, referred to as the current expected credit loss (“CECL”) model, will apply to: (1) financial assets subject to credit losses and measured at amortized cost, and (2) certain off-balance sheet credit exposures. This includes, but is not limited to, loans, leases, held-to-maturity securities, loan commitments, and financial guarantees. The CECL model does not apply to available-for-sale (“AFS”) debt securities. For AFS debt securities with unrealized losses, entities will measure credit losses in a manner similar to what they do today, except that the losses will be recognized as allowances rather than reductions in the amortized cost of the securities. As a result, entities will recognize improvements to estimated credit losses immediately in earnings rather than as interest income over time, as they do today. The ASU also simplifies the accounting model for purchased credit-impaired debt securities and loans. ASU 2016-13 also expands the disclosure requirements regarding an entity’s assumptions, models, and methods for estimating the allowance for loan and lease losses. In addition, entities will need to disclose the amortized cost balance for each class of financial asset by credit quality indicator, disaggregated by the year of origination. ASU No. 2016-13 is effective for interim and annual reporting periods beginning after December 15, 2019; early adoption is permitted for interim and annual reporting periods beginning after December 15, 2018. Entities will apply the standard’s provisions as a cumulative-effect adjustment to retained earnings as of the beginning of the first reporting period in which the guidance is effective (i.e., modified retrospective approach). The Company is continuing its implementation efforts through its Company-wide implementation team. This team has assigned roles and responsibilities, key tasks to complete, and a general timeline to be followed. The implementation team meets periodically to discuss the latest developments and ensure progress is being made. The team also keeps current on the latest news via webcasts, publications, conferences, and peer bank meetings. The Company’s preliminary evaluation indicates the provisions of ASU No. 2016-13 are expected to impact the Company’s Consolidated Financial Statements, in particular the level of the reserve for credit losses. However, the Company continues to evaluate the extent of the potential impact. In August 2016, the FASB issued ASU No. 2016-15, “Classification of Certain Cash Receipts and Cash Payments.” Current GAAP is unclear or does not include specific guidance on how to classify certain transactions in the statement of cash flows. This ASU is intended to reduce diversity in practice in how eight particular transactions are classified in the statement of cash flows. ASU No. 2016-15 is effective for interim and annual reporting periods beginning after December 15, 2017. Early adoption is permitted, provided that all of the amendments are adopted in the same period. Entities will be required to apply the guidance retrospectively. If it is impracticable to apply the guidance retrospectively for an issue, the amendments related to that issue would be applied prospectively. As this guidance only affects the classification within the statement of cash flows, ASU No. 2016-15 is not expected to have a material impact on the Company’s Consolidated Financial Statements. In January 2017, the FASB issued ASU No. 2017-04, “Simplifying the Test for Goodwill Impairment.” The guidance removes Step 2 of the goodwill impairment test, which requires a hypothetical purchase price allocation. Goodwill impairment will now be the amount by which a reporting unit’s carrying value exceeds its fair value, not to exceed the carrying amount of goodwill. All other goodwill impairment guidance will remain largely unchanged. ASU No. 2017-04 is effective for interim and annual reporting periods beginning after December 15, 2019, applied prospectively. Early adoption is permitted for any impairment tests performed after January 1, 2017. The Company expects to early adopt upon the next goodwill impairment test in 2017. ASU No. 2017-04 is not expected to have a material impact on the Company’s Consolidated Financial Statements. In March 2017, the FASB issued ASU No. 2017-07, “Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost.” Under the new guidance, employers will present the service cost component of the net periodic benefit cost in the same income statement line item (e.g., Salaries and Benefits) as other employee compensation costs arising from services rendered during the period. In addition, only the service cost component will be eligible for capitalization in assets. Employers will present the other components separately (e.g., Other Noninterest Expense) from the line item that includes the service cost. ASU No. 2017-07 is effective for interim and annual reporting periods beginning after December 15, 2017. Early adoption is permitted, however, the Company has decided not to early adopt. Employers will apply the guidance on the presentation of the components of net periodic benefit cost in the income statement retrospectively. The guidance limiting the capitalization of net periodic benefit cost in assets to the service cost component will be applied prospectively. The Company expects to utilize the ASU’s practical expedient allowing entities to estimate amounts for comparative periods using the information previously disclosed in their pension and other postretirement benefit plan footnote. ASU No. 2017-07 is not expected to have a material impact on the Company’s Consolidated Financial Statements. In March 2017, the FASB issued ASU No. 2017-08, “Premium Amortization on Purchased Callable Debt Securities.” This ASU shortens the amortization period for the premium on certain purchased callable debt securities to the earliest call date. Today, entities generally amortize the premium over the contractual life of the security. The new guidance does not change the accounting for purchased callable debt securities held at a discount; the discount continues to be amortized to maturity. ASU No. 2017-08 is effective for interim and annual reporting periods beginning after December 15, 2018; early adoption is permitted. The guidance calls for a modified retrospective transition approach under which a cumulative-effect adjustment will be made to retained earnings as of the beginning of the first reporting period in which the guidance is adopted. The Company is currently evaluating the provisions of ASU No. 2017-08 to determine the potential impact the new standard will have on the Company’s Consolidated Financial Statements. In May 2017, the FASB issued ASU No. 2017-09, “Stock Compensation, Scope of Modification Accounting.” This ASU clarifies when changes to the terms of conditions of a share-based payment award must be accounted for as modifications. Companies will apply the modification accounting guidance if the value, vesting conditions or classification of the award changes. The new guidance should reduce diversity in practice and result in fewer changes to the terms of an award being accounted for as modifications, as the guidance will allow companies to make certain non-substantive changes to awards without accounting for them as modifications. It does not change the accounting for modifications. ASU No. 2017-09 is effective for interim and annual reporting periods beginning after December 15, 2017; early adoption is permitted. ASU No. 2017-09 is not expected to have a material impact on the Company’s Consolidated Financial Statements.

Investment Securities (Tables)

6 Months Ended

Jun. 30, 2017

Investments, Debt and Equity Securities [Abstract]

Schedule of amortized cost, gross unrealized gains and losses, and fair value of investment securities

The amortized cost, gross unrealized gains and losses, and fair value of the Company’s investment securities as of June 30, 2017 and December 31, 2016 were as follows:



(dollars in thousands)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
June 30, 2017
Available-for-Sale:
Debt Securities Issued by the U.S. Treasury and Government Agencies	$	430,208	$	3,732	$	(963	)	$	432,977
Debt Securities Issued by States and Political Subdivisions	650,075		17,905		(99		)	667,881
Debt Securities Issued by Corporations	268,022		138		(2,911		)	265,249
Mortgage-Backed Securities:
Residential - Government Agencies	262,834		3,858		(1,150		)	265,542
Residential - U.S. Government-Sponsored Enterprises	613,512		1,090		(4,701		)	609,901
Commercial - Government Agencies	77,757		—		(2,579		)	75,178
Total Mortgage-Backed Securities	954,103		4,948		(8,430		)	950,621
Total	$	2,302,408	$	26,723	$	(12,403	)	$	2,316,728
Held-to-Maturity:
Debt Securities Issued by the U.S. Treasury and Government Agencies	$	500,111	$	613	$	(886	)	$	499,838
Debt Securities Issued by States and Political Subdivisions	240,413		14,472		—			254,885
Debt Securities Issued by Corporations	127,666		405		(1,326		)	126,745
Mortgage-Backed Securities:
Residential - Government Agencies	1,928,530		15,726		(19,602		)	1,924,654
Residential - U.S. Government-Sponsored Enterprises	772,212		1,284		(7,144		)	766,352
Commercial - Government Agencies	213,770		2,213		(2,816		)	213,167
Total Mortgage-Backed Securities	2,914,512		19,223		(29,562		)	2,904,173
Total	$	3,782,702	$	34,713	$	(31,774	)	$	3,785,641

December 31, 2016
Available-for-Sale:
Debt Securities Issued by the U.S. Treasury and Government Agencies	$	407,478	$	2,531	$	(1,294	)	$	408,715
Debt Securities Issued by States and Political Subdivisions	662,231		11,455		(1,887		)	671,799
Debt Securities Issued by Corporations	273,044		5		(3,870		)	269,179
Mortgage-Backed Securities:
Residential - Government Agencies	240,412		4,577		(1,145		)	243,844
Residential - U.S. Government-Sponsored Enterprises	511,234		971		(5,218		)	506,987
Commercial - Government Agencies	89,544		—		(4,027		)	85,517
Total Mortgage-Backed Securities	841,190		5,548		(10,390		)	836,348
Total	$	2,183,943	$	19,539	$	(17,441	)	$	2,186,041
Held-to-Maturity:
Debt Securities Issued by the U.S. Treasury and Government Agencies	$	530,149	$	1,562	$	(771	)	$	530,940
Debt Securities Issued by States and Political Subdivisions	242,295		9,991		—			252,286
Debt Securities Issued by Corporations	135,620		416		(1,528		)	134,508
Mortgage-Backed Securities:
Residential - Government Agencies	1,940,076		20,567		(23,861		)	1,936,782
Residential - U.S. Government-Sponsored Enterprises	752,768		798		(10,919		)	742,647
Commercial - Government Agencies	232,089		940		(2,665		)	230,364
Total Mortgage-Backed Securities	2,924,933		22,305		(37,445		)	2,909,793
Total	$	3,832,997	$	34,274	$	(39,744	)	$	3,827,527

Analysis of the contractual maturities of investment securities



(dollars in thousands)	Amortized Cost		Fair Value
Available-for-Sale:
Due in One Year or Less	$	86,725	$	86,878
Due After One Year Through Five Years	585,928		589,580
Due After Five Years Through Ten Years	214,366		223,309
Due After Ten Years	31,629		33,904
	918,648		933,671

Debt Securities Issued by Government Agencies	429,657		432,436
Mortgage-Backed Securities:
Residential - Government Agencies	262,834		265,542
Residential - U.S. Government-Sponsored Enterprises	613,512		609,901
Commercial - Government Agencies	77,757		75,178
Total Mortgage-Backed Securities	954,103		950,621
Total	$	2,302,408	$	2,316,728

Held-to-Maturity:
Due in One Year or Less	$	235,104	$	234,882
Due After One Year Through Five Years	335,763		338,517
Due After Five Years Through Ten Years	258,942		266,850
Due After Ten Years	38,381		41,219
	868,190		881,468
Mortgage-Backed Securities:
Residential - Government Agencies	1,928,530		1,924,654
Residential - U.S. Government-Sponsored Enterprises	772,212		766,352
Commercial - Government Agencies	213,770		213,167
Total Mortgage-Backed Securities	2,914,512		2,904,173
Total	$	3,782,702	$	3,785,641

Schedule of gains (losses) on sale of investment securities

The table below presents the gains and losses from the sales of investment securities for the three and six months ended June 30, 2017 and 2016.



	Three Months Ended June 30,						Six Months Ended June 30,
(dollars in thousands)	2017			2016			2017			2016
Gross Gains on Sales of Investment Securities	$	—		$	—		$	12,467		$	11,355
Gross Losses on Sales of Investment Securities	(520		)	(312		)	(854		)	(487		)
Net Gains (Losses) on Sales of Investment Securities	$	(520	)	$	(312	)	$	11,613		$	10,868

Schedule of investment securities in an unrealized loss position

The Company’s investment securities in an unrealized loss position, segregated by continuous length of loss, were as follows:



	Less Than 12 Months					12 Months or Longer					Total
(dollars in thousands)	Fair Value		Gross Unrealized Losses			Fair Value		Gross Unrealized Losses			Fair Value		Gross Unrealized Losses
June 30, 2017
Available-for-Sale:
Debt Securities Issued by the U.S. Treasury and Government Agencies	$	42,325	$	(285	)	$	143,773	$	(678	)	$	186,098	$	(963	)
Debt Securities Issued by States and Political Subdivisions	49,521		(99		)	—		—			49,521		(99		)
Debt Securities Issued by Corporations	62,472		(555		)	162,638		(2,356		)	225,110		(2,911		)
Mortgage-Backed Securities:
Residential - Government Agencies	23,520		(56		)	13,814		(1,094		)	37,334		(1,150		)
Residential - U.S. Government-Sponsored Enterprises	420,189		(4,398		)	10,611		(303		)	430,800		(4,701		)
Commercial - Government Agencies	—		—			75,178		(2,579		)	75,178		(2,579		)
Total Mortgage-Backed Securities	443,709		(4,454		)	99,603		(3,976		)	543,312		(8,430		)
Total	$	598,027	$	(5,393	)	$	406,014	$	(7,010	)	$	1,004,041	$	(12,403	)
Held-to-Maturity:
Debt Securities Issued by the U.S. Treasury and Government Agencies	$	284,734	$	(886	)	$	—	$	—		$	284,734	$	(886	)
Debt Securities Issued by Corporations	65,356		(835		)	15,027		(491		)	80,383		(1,326		)
Mortgage-Backed Securities:
Residential - Government Agencies	856,028		(11,817		)	222,166		(7,785		)	1,078,194		(19,602		)
Residential - U.S. Government-Sponsored Enterprises	598,035		(7,144		)	—		—			598,035		(7,144		)
Commercial - Government Agencies	79,883		(2,748		)	10,561		(68		)	90,444		(2,816		)
Total Mortgage-Backed Securities	1,533,946		(21,709		)	232,727		(7,853		)	1,766,673		(29,562		)
Total	$	1,884,036	$	(23,430	)	$	247,754	$	(8,344	)	$	2,131,790	$	(31,774	)

December 31, 2016
Available-for-Sale:
Debt Securities Issued by the U.S. Treasury and Government Agencies	$	143,715	$	(562	)	$	89,211	$	(732	)	$	232,926	$	(1,294	)
Debt Securities Issued by States and Political Subdivisions	211,188		(1,873		)	6,725		(14		)	217,913		(1,887		)
Debt Securities Issued by Corporations	67,332		(714		)	196,838		(3,156		)	264,170		(3,870		)
Mortgage-Backed Securities:
Residential - Government Agencies	38,355		(89		)	11,185		(1,056		)	49,540		(1,145		)
Residential - U.S. Government-Sponsored Enterprises	397,385		(5,218		)	—		—			397,385		(5,218		)
Commercial - Government Agencies	5,097		(164		)	80,420		(3,863		)	85,517		(4,027		)
Total Mortgage-Backed Securities	440,837		(5,471		)	91,605		(4,919		)	532,442		(10,390		)
Total	$	863,072	$	(8,620	)	$	384,379	$	(8,821	)	$	1,247,451	$	(17,441	)
Held-to-Maturity:
Debt Securities Issued by the U.S. Treasury and Government Agencies	$	169,926	$	(771	)	$	—	$	—		$	169,926	$	(771	)
Debt Securities Issued by Corporations	69,601		(971		)	15,933		(557		)	85,534		(1,528		)
Mortgage-Backed Securities:
Residential - Government Agencies	835,227		(15,313		)	231,377		(8,548		)	1,066,604		(23,861		)
Residential - U.S. Government-Sponsored Enterprises	693,047		(10,919		)	—		—			693,047		(10,919		)
Commercial - Government Agencies	87,586		(2,597		)	18,653		(68		)	106,239		(2,665		)
Total Mortgage-Backed Securities	1,615,860		(28,829		)	250,030		(8,616		)	1,865,890		(37,445		)
Total	$	1,855,387	$	(30,571	)	$	265,963	$	(9,173	)	$	2,121,350	$	(39,744	)

Schedule of interest income from taxable and non-taxable investment securities

Interest income from taxable and non-taxable investment securities for the three and six months ended June 30, 2017 and 2016 were as follows:



	Three Months Ended June 30,				Six Months Ended June 30,
(dollars in thousands)	2017		2016		2017		2016
Taxable	$	26,741	$	25,567	$	52,508	$	51,554
Non-Taxable	5,012		5,122		10,035		10,340
Total Interest Income from Investment Securities	$	31,753	$	30,689	$	62,543	$	61,894

Schedule of carrying value of company's Federal Home Loan Bank and Federal Reserve Bank

As of June 30, 2017 and December 31, 2016, the carrying value of the Company’s Federal Home Loan Bank of Des Moines stock and Federal Reserve Bank stock was as follows:



(dollars in thousands)	June 30, 2017		December 31, 2016
Federal Home Loan Bank Stock	$	20,000	$	20,000
Federal Reserve Bank Stock	20,167		20,063
Total	$	40,167	$	40,063

- Definition

Tabular disclosure of the realized and unrealized gains and losses reported in the statement of income which have resulted from the sale and holding of marketable securities, respectively, as well as the sale or disposal of cost method investments. Such amounts would include realized gains and losses on the sale or disposal of trading, available-for-sale, and held-to-maturity securities, unrealized gains and losses on trading securities, unrealized gains and losses on available-for-sale and held-to-maturity securities transferred to the trading securities category, realized gains and losses on the sale or disposal of cost method investments, and losses recognized for other than temporary impairments (OTTI) of such investments.

+ References + Details

Loans and Leases and the Allowance for Loan and Lease Losses (Tables)

6 Months Ended

Jun. 30, 2017

Loans and Leases and Allowance for Loan and Lease Losses [Abstract]

Schedule of Loan and Lease Portfolio

The Company’s loan and lease portfolio was comprised of the following as of June 30, 2017 and December 31, 2016:



(dollars in thousands)	June 30, 2017		December 31, 2016
Commercial
Commercial and Industrial	$	1,241,953	$	1,249,791
Commercial Mortgage	2,009,886		1,889,551
Construction	248,030		270,018
Lease Financing	205,043		208,332
Total Commercial	3,704,912		3,617,692
Consumer
Residential Mortgage	3,317,179		3,163,073
Home Equity	1,473,123		1,334,163
Automobile	484,092		454,333
Other ¹	408,307		380,524
Total Consumer	5,682,701		5,332,093
Total Loans and Leases	$	9,387,613	$	8,949,785


¹	Comprised of other revolving credit, installment, and lease financing.

Schedule of Portfolio Segment and Balance in Allowance Disaggregated on the Basis of Impairment Measurement Method



(dollars in thousands)	Commercial			Consumer			Total
Three Months Ended June 30, 2017
Allowance for Loan and Lease Losses:
Balance at Beginning of Period	$	66,893		$	38,171		$	105,064
Loans and Leases Charged-Off	(124		)	(5,363		)	(5,487		)
Recoveries on Loans and Leases Previously Charged-Off	266			2,260			2,526
Net Loans and Leases Recovered (Charged-Off)	142			(3,103		)	(2,961		)
Provision for Credit Losses	(853		)	5,103			4,250
Balance at End of Period	$	66,182		$	40,171		$	106,353
Six Months Ended June 30, 2017
Allowance for Loan and Lease Losses:
Balance at Beginning of Period	$	65,680		$	38,593		$	104,273
Loans and Leases Charged-Off	(298		)	(10,893		)	(11,191		)
Recoveries on Loans and Leases Previously Charged-Off	602			4,019			4,621
Net Loans and Leases Recovered (Charged-Off)	304			(6,874		)	(6,570		)
Provision for Credit Losses	198			8,452			8,650
Balance at End of Period	$	66,182		$	40,171		$	106,353
As of June 30, 2017
Allowance for Loan and Lease Losses:
Individually Evaluated for Impairment	$	45		$	3,792		$	3,837
Collectively Evaluated for Impairment	66,137			36,379			102,516
Total	$	66,182		$	40,171		$	106,353
Recorded Investment in Loans and Leases:
Individually Evaluated for Impairment	$	20,197		$	38,528		$	58,725
Collectively Evaluated for Impairment	3,684,715			5,644,173			9,328,888
Total	$	3,704,912		$	5,682,701		$	9,387,613

Three Months Ended June 30, 2016
Allowance for Loan and Lease Losses:
Balance at Beginning of Period	$	61,810		$	42,867		$	104,677
Loans and Leases Charged-Off	(204		)	(3,551		)	(3,755		)
Recoveries on Loans and Leases Previously Charged-Off	418			1,592			2,010
Net Loans and Leases Recovered (Charged-Off)	214			(1,959		)	(1,745		)
Provision for Credit Losses	5			995			1,000
Balance at End of Period	$	62,029		$	41,903		$	103,932
Six Months Ended June 30, 2016
Allowance for Loan and Lease Losses:
Balance at Beginning of Period	$	60,714		$	42,166		$	102,880
Loans and Leases Charged-Off	(461		)	(8,181		)	(8,642		)
Recoveries on Loans and Leases Previously Charged-Off	7,323			3,371			10,694
Net Loans and Leases Recovered (Charged-Off)	6,862			(4,810		)	2,052
Provision for Credit Losses	(5,547		)	4,547			(1,000		)
Balance at End of Period	$	62,029		$	41,903		$	103,932
As of June 30, 2016
Allowance for Loan and Lease Losses:
Individually Evaluated for Impairment	$	7		$	3,195		$	3,202
Collectively Evaluated for Impairment	62,022			38,708			100,730
Total	$	62,029		$	41,903		$	103,932
Recorded Investment in Loans and Leases:
Individually Evaluated for Impairment	$	22,271		$	38,691		$	60,962
Collectively Evaluated for Impairment	3,283,571			4,986,936			8,270,507
Total	$	3,305,842		$	5,025,627		$	8,331,469

Schedule of Recorded Investment in Loans and Leases by Class and by Credit Quality Indicator

The following presents by class and by credit quality indicator, the recorded investment in the Company’s loans and leases as of June 30, 2017 and December 31, 2016.



	June 30, 2017
(dollars in thousands)	Commercial and Industrial		Commercial Mortgage		Construction		Lease Financing		Total Commercial
Pass	$	1,197,264	$	1,937,447	$	246,283	$	204,572	$	3,585,566
Special Mention	16,752		53,046		282		—		70,080
Classified	27,937		19,393		1,465		471		49,266
Total	$	1,241,953	$	2,009,886	$	248,030	$	205,043	$	3,704,912

(dollars in thousands)	Residential Mortgage		Home Equity		Automobile		Other ¹		Total Consumer
Pass	$	3,307,841	$	1,466,847	$	483,553	$	407,468	$	5,665,709
Special Mention	—		1,764		—		—		1,764
Classified	9,338		4,512		539		839		15,228
Total	$	3,317,179	$	1,473,123	$	484,092	$	408,307	$	5,682,701
Total Recorded Investment in Loans and Leases									$	9,387,613



	December 31, 2016
(dollars in thousands)	Commercial and Industrial		Commercial Mortgage		Construction		Lease Financing		Total Commercial
Pass	$	1,203,025	$	1,792,119	$	264,287	$	207,386	$	3,466,817
Special Mention	20,253		66,734		4,218		5		91,210
Classified	26,513		30,698		1,513		941		59,665
Total	$	1,249,791	$	1,889,551	$	270,018	$	208,332	$	3,617,692

(dollars in thousands)	Residential Mortgage		Home Equity		Automobile		Other¹		Total Consumer
Pass	$	3,149,294	$	1,327,676	$	453,439	$	379,793	$	5,310,202
Special Mention	—		2,964		—		—		2,964
Classified	13,779		3,523		894		731		18,927
Total	$	3,163,073	$	1,334,163	$	454,333	$	380,524	$	5,332,093
Total Recorded Investment in Loans and Leases									$	8,949,785


¹	Comprised of other revolving credit, installment, and lease financing.

Schedule of Aging Analysis by Class of Loan and Lease Portfolio

The following presents by class, an aging analysis of the Company’s loan and lease portfolio as of June 30, 2017 and December 31, 2016.



(dollars in thousands)	30 - 59 Days Past Due		60 - 89 Days Past Due		Past Due 90 Days or More		Non-Accrual		Total Past Due and Non-Accrual		Current		Total Loans and Leases		Non-Accrual Loans and Leases that are Current ²
As of June 30, 2017
Commercial
Commercial and Industrial	$	310	$	68	$	—	$	175	$	553	$	1,241,400	$	1,241,953	$	78
Commercial Mortgage	12		—		—		1,460		1,472		2,008,414		2,009,886		899
Construction	—		—		—		—		—		248,030		248,030		—
Lease Financing	—		—		—		—		—		205,043		205,043		—
Total Commercial	322		68		—		1,635		2,025		3,702,887		3,704,912		977
Consumer
Residential Mortgage	3,486		869		2,269		9,337		15,961		3,301,218		3,317,179		733
Home Equity	2,331		524		2,343		3,405		8,603		1,464,520		1,473,123		1,006
Automobile	11,184		1,397		539		—		13,120		470,972		484,092		—
Other ¹	2,886		1,597		1,859		—		6,342		401,965		408,307		—
Total Consumer	19,887		4,387		7,010		12,742		44,026		5,638,675		5,682,701		1,739
Total	$	20,209	$	4,455	$	7,010	$	14,377	$	46,051	$	9,341,562	$	9,387,613	$	2,716

As of December 31, 2016
Commercial
Commercial and Industrial	$	10,698	$	1,016	$	—	$	151	$	11,865	$	1,237,926	$	1,249,791	$	—
Commercial Mortgage	128		17		—		997		1,142		1,888,409		1,889,551		416
Construction	—		—		—		—		—		270,018		270,018		—
Lease Financing	—		—		—		—		—		208,332		208,332		—
Total Commercial	10,826		1,033		—		1,148		13,007		3,604,685		3,617,692		416
Consumer
Residential Mortgage	6,491		106		3,127		13,780		23,504		3,139,569		3,163,073		1,628
Home Equity	3,063		2,244		1,457		3,147		9,911		1,324,252		1,334,163		1,015
Automobile	11,692		2,162		894		—		14,748		439,585		454,333		—
Other ¹	3,200		1,532		1,592		—		6,324		374,200		380,524		—
Total Consumer	24,446		6,044		7,070		16,927		54,487		5,277,606		5,332,093		2,643
Total	$	35,272	$	7,077	$	7,070	$	18,075	$	67,494	$	8,882,291	$	8,949,785	$	3,059


¹	Comprised of other revolving credit, installment, and lease financing.


²	Represents non-accrual loans that are not past due 30 days or more; however, full payment of principal and interest is still not expected.

Schedule of Information Related to Impaired Loans

The following presents by class, information related to impaired loans as of June 30, 2017 and December 31, 2016.



(dollars in thousands)	Recorded Investment		Unpaid Principal Balance		Related Allowance for Loan Losses
June 30, 2017
Impaired Loans with No Related Allowance Recorded:
Commercial
Commercial and Industrial	$	8,216	$	15,178	$	—
Commercial Mortgage	9,573		13,073		—
Construction	1,465		1,465		—
Total Commercial	19,254		29,716		—
Total Impaired Loans with No Related Allowance Recorded	$	19,254	$	29,716	$	—

Impaired Loans with an Allowance Recorded:
Commercial
Commercial and Industrial	$	624	$	624	$	13
Commercial Mortgage	319		319		32
Total Commercial	943		943		45
Consumer
Residential Mortgage	21,947		26,686		3,167
Home Equity	1,735		1,735		267
Automobile	12,178		12,178		279
Other ¹	2,668		2,669		79
Total Consumer	38,528		43,268		3,792
Total Impaired Loans with an Allowance Recorded	$	39,471	$	44,211	$	3,837

Impaired Loans:
Commercial	$	20,197	$	30,659	$	45
Consumer	38,528		43,268		3,792
Total Impaired Loans	$	58,725	$	73,927	$	3,837

December 31, 2016
Impaired Loans with No Related Allowance Recorded:
Commercial
Commercial and Industrial	$	9,556	$	16,518	$	—
Commercial Mortgage	9,373		12,873		—
Construction	1,513		1,513		—
Total Commercial	20,442		30,904		—
Total Impaired Loans with No Related Allowance Recorded	$	20,442	$	30,904	$	—

Impaired Loans with an Allowance Recorded:
Commercial
Commercial and Industrial	$	765	$	765	$	24
Commercial Mortgage	365		365		21
Total Commercial	1,130		1,130		45
Consumer
Residential Mortgage	25,625		30,615		3,224
Home Equity	1,516		1,516		15
Automobile	9,660		9,660		206
Other ¹	2,325		2,325		65
Total Consumer	39,126		44,116		3,510
Total Impaired Loans with an Allowance Recorded	$	40,256	$	45,246	$	3,555

Impaired Loans:
Commercial	$	21,572	$	32,034	$	45
Consumer	39,126		44,116		3,510
Total Impaired Loans	$	60,698	$	76,150	$	3,555

¹ Comprised of other revolving credit and installment financing.

Schedule of the Average Recorded Investment and Interest Income Recognized on Impaired Loans

The following presents by class, information related to the average recorded investment and interest income recognized on impaired loans for the three and six months ended June 30, 2017 and 2016.



	Three Months Ended June 30, 2017				Three Months Ended June 30, 2016
(dollars in thousands)	Average Recorded Investment		Interest Income Recognized		Average Recorded Investment		Interest Income Recognized
Impaired Loans with No Related Allowance Recorded:
Commercial
Commercial and Industrial	$	8,717	$	61	$	10,032	$	112
Commercial Mortgage	9,369		77		10,059		93
Construction	1,477		24		1,570		25
Total Commercial	19,563		162		21,661		230
Total Impaired Loans with No Related Allowance Recorded	$	19,563	$	162	$	21,661	$	230

Impaired Loans with an Allowance Recorded:
Commercial
Commercial and Industrial	$	657	$	9	$	968	$	12
Commercial Mortgage	331		4		—		—
Total Commercial	988		13		968		12
Consumer
Residential Mortgage	23,148		214		27,995		250
Home Equity	1,621		20		1,511		18
Automobile	11,547		195		7,422		125
Other ¹	2,663		57		1,932		43
Total Consumer	38,979		486		38,860		436
Total Impaired Loans with an Allowance Recorded	$	39,967	$	499	$	39,828	$	448

Impaired Loans:
Commercial	$	20,551	$	175	$	22,629	$	242
Consumer	38,979		486		38,860		436
Total Impaired Loans	$	59,530	$	661	$	61,489	$	678

	Six Months Ended June 30, 2017				Six Months Ended June 30, 2016
(dollars in thousands)	Average Recorded Investment		Interest Income Recognized		Average Recorded Investment		Interest Income Recognized
Impaired Loans with No Related Allowance Recorded:
Commercial
Commercial and Industrial	$	8,996	$	142	$	11,571	$	218
Commercial Mortgage	9,370		162		10,175		162
Construction	1,489		48		1,581		51
Total Commercial	19,855		352		23,327		431
Total Impaired Loans with No Related Allowance Recorded	$	19,855	$	352	$	23,327	$	431

Impaired Loans with an Allowance Recorded:
Commercial
Commercial and Industrial	$	693	$	20	$	1,075	$	32
Commercial Mortgage	342		8		—		—
Total Commercial	1,035		28		1,075		32
Consumer
Residential Mortgage	23,974		426		28,323		501
Home Equity	1,586		37		1,370		35
Automobile	10,918		364		7,285		247
Other ¹	2,550		110		1,843		82
Total Consumer	39,028		937		38,821		865
Total Impaired Loans with an Allowance Recorded	$	40,063	$	965	$	39,896	$	897

Impaired Loans:
Commercial	$	20,890	$	380	$	24,402	$	463
Consumer	39,028		937		38,821		865
Total Impaired Loans	$	59,918	$	1,317	$	63,223	$	1,328


¹	Comprised of other revolving credit and installment financing.

Schedule of Loans Modified in a TDR and TDRs that Defaulted During the Period Within 12 mos of Modification Date

The following presents by class, information related to loans modified in a TDR during the three and six months ended June 30, 2017 and 2016.



	Loans Modified as a TDR for the Three Months Ended June 30, 2017							Loans Modified as a TDR for the Three Months Ended June 30, 2016
			Recorded			Increase in				Recorded			Increase in
Troubled Debt Restructurings	Number of		Investment			Allowance		Number of		Investment			Allowance
(dollars in thousands)	Contracts	(as of period end)¹			(as of period end)			Contracts	(as of period end)¹			(as of period end)
Commercial
Commercial and Industrial	6		$	4,191		$	11	16		$	2,955		$	—
Commercial Mortgage	1		700			—		—		—			—
Total Commercial	7		4,891			11		16		2,955			—
Consumer
Residential Mortgage	—		—			—		1		440			—
Home Equity	1		4			4		—		—			—
Automobile	99		2,115			49		53		977			22
Other ²	40		304			8		40		271			8
Total Consumer	140		2,423			61		94		1,688			30
Total	147		$	7,314		$	72	110		$	4,643		$	30

	Loans Modified as a TDR for the Six Months Ended June 30, 2017							Loans Modified as a TDR for the Six Months Ended June 30, 2016
			Recorded			Increase in				Recorded			Increase in
Troubled Debt Restructurings	Number of		Investment			Allowance		Number of		Investment			Allowance
(dollars in thousands)	Contracts	(as of period end)¹			(as of period end)			Contracts	(as of period end)¹			(as of period end)
Commercial
Commercial and Industrial	11		$	7,235		$	11	18		$	3,102		$	2
Commercial Mortgage	2		1,096			—		—		—			—
Total Commercial	13		8,331			11		18		3,102			2
Consumer
Residential Mortgage	—		—			—		4		1,610			15
Home Equity	1		239			4		1		478			6
Automobile	209		4,315			99		108		2,008			48
Other ²	114		891			24		99		684			19
Total Consumer	324		5,445			127		212		4,780			88
Total	337		$	13,776		$	138	230		$	7,882		$	90


¹	The period end balances reflect all paydowns and charge-offs since the modification date. TDRs fully paid-off, charged-off, or foreclosed upon by period end are not included.


²	Comprised of other revolving credit and installment financing.



	Three Months Ended June 30, 2017			Three Months Ended June 30, 2016
TDRs that Defaulted During the Period,		Recorded		Recorded
Within Twelve Months of their Modification Date	Number of	Investment		Number of	Investment
(dollars in thousands)	Contracts	(as of period end)¹		Contracts	(as of period end)¹
Consumer
Residential Mortgage	—	$	—	1	$	43
Automobile	12	267		3	21
Other ²	18	137		9	70
Total Consumer	30	404		13	134
Total	30	$	404	13	$	134

	Six Months Ended June 30, 2017			Six Months Ended June 30, 2016
TDRs that Defaulted During the Period,		Recorded		Recorded
Within Twelve Months of their Modification Date	Number of	Investment		Number of	Investment
(dollars in thousands)	Contracts	(as of period end)¹		Contracts	(as of period end)¹
Commercial
Commercial and Industrial	1	$	49	—	$	—
Total Commercial	1	49		—	—

Consumer
Residential Mortgage	—	—		3	1,056
Home Equity	—	—		1	162
Automobile	17	390		4	57
Other ²	36	255		22	142
Total Consumer	53	645		30	1,417
Total	54	$	694	30	$	1,417


¹	The period end balances reflect all paydowns and charge-offs since the modification date. TDRs fully paid-off, charged-off, or foreclosed upon by period end are not included.


²	Comprised of other revolving credit and installment financing.

Mortgage Servicing Rights (Tables)

6 Months Ended

Jun. 30, 2017

Transfers and Servicing of Financial Assets [Abstract]

Analysis of mortgage servicing rights accounted for under the fair value measurement method



	Three Months Ended June 30,						Six Months Ended June 30,
(dollars in thousands)	2017			2016			2017			2016
Balance at Beginning of Period	$	1,586		$	1,910		$	1,655		$	1,970
Change in Fair Value:
Due to Payoffs	(38		)	(91		)	(107		)	(151		)
Total Changes in Fair Value of Mortgage Servicing Rights	(38		)	(91		)	(107		)	(151		)
Balance at End of Period	$	1,548		$	1,819		$	1,548		$	1,819

Analysis of mortgage servicing rights accounted for under the amortization method



	Three Months Ended June 30,						Six Months Ended June 30,
(dollars in thousands)	2017			2016			2017			2016
Balance at Beginning of Period	$	22,705		$	20,753		$	22,008		$	21,032
Servicing Rights that Resulted From Asset Transfers	961			329			2,276			771
Amortization	(690		)	(677		)	(1,308		)	(1,313		)
Valuation Allowance Provision	(53		)	(2,593		)	(53		)	(2,678		)
Balance at End of Period	$	22,923		$	17,812		$	22,923		$	17,812

Valuation Allowance:
Balance at Beginning of Period	$	—		$	(106	)	$	—		$	(21	)
Valuation Allowance Provision	(53		)	(2,593		)	(53		)	(2,678		)
Balance at End of Period	$	(53	)	$	(2,699	)	$	(53	)	$	(2,699	)

Fair Value of Mortgage Servicing Rights Accounted for Under the Amortization Method
Beginning of Period	$	25,946		$	20,841		$	25,148		$	24,804
End of Period	$	25,479		$	17,812		$	25,479		$	17,812

Schedule of key data and assumptions used in estimating the fair value of mortgage servicing rights

The key data and assumptions used in estimating the fair value of the Company’s mortgage servicing rights as of June 30, 2017 and December 31, 2016 were as follows:



	June 30, 2017		December 31, 2016
Weighted-Average Constant Prepayment Rate ¹	8.60	%	8.13	%
Weighted-Average Life (in years)	7.20		7.43
Weighted-Average Note Rate	4.07	%	4.10	%
Weighted-Average Discount Rate ²	8.87	%	9.33	%


¹	Represents annualized loan repayment rate assumption.


²	Derived from multiple interest rate scenarios that incorporate a spread to a market yield curve and market volatilities.

Schedule of sensitivity analysis of the fair value of mortgage servicing rights

A sensitivity analysis of the Company’s fair value of mortgage servicing rights to changes in certain key assumptions as of June 30, 2017 and December 31, 2016 is presented in the following table.



(dollars in thousands)	June 30, 2017			December 31, 2016
Constant Prepayment Rate
Decrease in fair value from 25 basis points (“bps”) adverse change	$	(317	)	$	(321	)
Decrease in fair value from 50 bps adverse change	(628		)	(636		)
Discount Rate
Decrease in fair value from 25 bps adverse change	(285		)	(288		)
Decrease in fair value from 50 bps adverse change	(565		)	(570		)

Low Income Housing Tax Credit Partnerships (Tables)

6 Months Ended

Jun. 30, 2017

Equity Method Investments and Joint Ventures [Abstract]

Equity Method Investments

As of June 30, 2017, the expected payments for unfunded affordable housing commitments were as follows:



(dollars in thousands)	Amount
2017	$	3,173
2018	8,526
2019	5,947
2020	27
2021	9
Thereafter	425
Total Unfunded Commitments	$	18,107

The following table presents tax credits and other tax benefits recognized and amortization expense related to affordable housing for the three and six months ended June 30, 2017 and 2016.



	Three Months Ended June 30,				Six Months Ended June 30,
(dollars in thousands)	2017		2016		2017		2016
Effective Yield Method
Tax credits and other tax benefits recognized	$	3,439	$	3,516	$	6,869	$	7,032
Amortization Expense in Provision for Income Taxes	2,137		2,174		4,298		4,348

Proportional Amortization Method
Tax credits and other tax benefits recognized	$	440	$	259	$	761	$	518
Amortization Expense in Provision for Income Taxes	358		200		611		400

Balance Sheet Offsetting (Tables)

6 Months Ended

Jun. 30, 2017

Offsetting [Abstract]

Schedule of Repurchase Agreements - by maturity date and collateral type

The following table presents the remaining contractual maturities of the Company’s repurchase agreements as of June 30, 2017 and December 31, 2016, disaggregated by the class of collateral pledged.



	Remaining Contractual Maturity of Repurchase Agreements
(dollars in thousands)	Up to 90 days		91-365 days		1-3 Years		After 3 Years		Total
June 30, 2017
Class of Collateral Pledged:
Debt Securities Issued by the U.S. Treasury and Government Agencies	$	—	$	—	$	—	$	306,624	$	306,624
Debt Securities Issued by States and Political Subdivisions	695		2,790		1,000		—		4,485
Mortgage-Backed Securities:
Residential - Government Agencies	807		—		—		100,971		101,778
Residential - U.S. Government-Sponsored Enterprises	—		—		—		92,405		92,405
Total	$	1,502	$	2,790	$	1,000	$	500,000	$	505,292

December 31, 2016
Class of Collateral Pledged:
Debt Securities Issued by the U.S. Treasury and Government Agencies	$	—	$	—	$	200,000	$	104,681	$	304,681
Debt Securities Issued by States and Political Subdivisions	22,050		590		—		—		22,640
Mortgage-Backed Securities:
Residential - Government Agencies	738		—		—		97,281		98,019
Residential - U.S. Government-Sponsored Enterprises	—		—		—		98,038		98,038
Total	$	22,788	$	590	$	200,000	$	300,000	$	523,378

Schedule of assets and liabilities subject to an enforceable master netting arrangement



	(i)		(ii)		(iii) = (i)-(ii)		(iv)				(v) = (iii)-(iv)
	Gross Amounts Recognized in the Statements of Condition		Gross Amounts Offset in the Statements of Condition		Net Amounts Presented in the Statements of Condition		Gross Amounts Not Offset in the Statements of Condition
(dollars in thousands)							Netting Adjustments per Master Netting Arrangements		Fair Value of Collateral Pledged ¹		Net Amount
June 30, 2017
Assets:
Interest Rate Swap Agreements:
Institutional Counterparties	$	4,285	$	—	$	4,285	$	4,285	$	—	$	—

Liabilities:
Interest Rate Swap Agreements:
Institutional Counterparties	6,360		—		6,360		4,285		1,498		577

Repurchase Agreements:
Private Institutions	500,000		—		500,000		—		500,000		—
Government Entities	5,292		—		5,292		—		5,292		—
	$	505,292	$	—	$	505,292	$	—	$	505,292	$	—

December 31, 2016
Assets:
Interest Rate Swap Agreements:
Institutional Counterparties	$	5,094	$	—	$	5,094	$	5,094	$	—	$	—

Liabilities:
Interest Rate Swap Agreements:
Institutional Counterparties	6,489		—		6,489		5,094		500		895

Repurchase Agreements:
Private Institutions	500,000		—		500,000		—		500,000		—
Government Entities	23,378		—		23,378		—		23,378		—
	$	523,378	$	—	$	523,378	$	—	$	523,378	$	—

Accumulated Other Comprehensive Income (Loss) (Tables)

6 Months Ended

Jun. 30, 2017

Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract]

Components of other comprehensive income

The following table presents the components of other comprehensive income (loss) for the three and six months ended June 30, 2017 and 2016:



(dollars in thousands)	Before Tax			Tax Effect			Net of Tax
Three Months Ended June 30, 2017
Net Unrealized Gains (Losses) on Investment Securities:
Net Unrealized Gains (Losses) Arising During the Period	$	4,642		$	1,833		$	2,809
Amounts Reclassified from Accumulated Other Comprehensive Income (Loss) that (Increase) Decrease Net Income:
Amortization of Unrealized Holding (Gains) Losses on Held-to-Maturity Securities ¹	491			194			297
Net Unrealized Gains (Losses) on Investment Securities	5,133			2,027			3,106
Defined Benefit Plans:
Amortization of Net Actuarial Losses (Gains)	322			127			195
Amortization of Prior Service Credit	(80		)	(32		)	(48		)
Defined Benefit Plans, Net	242			95			147
Other Comprehensive Income (Loss)	$	5,375		$	2,122		$	3,253

Three Months Ended June 30, 2016
Net Unrealized Gains (Losses) on Investment Securities:
Net Unrealized Gains (Losses) Arising During the Period	$	8,279		$	3,268		$	5,011
Amounts Reclassified from Accumulated Other Comprehensive Income (Loss) that (Increase) Decrease Net Income:
Amortization of Unrealized Holding (Gains) Losses on Held-to-Maturity Securities ¹	242			96			146
Net Unrealized Gains (Losses) on Investment Securities	8,521			3,364			5,157
Defined Benefit Plans:
Amortization of Net Actuarial Losses (Gains)	312			123			189
Amortization of Prior Service Credit	(80		)	(32		)	(48		)
Defined Benefit Plans, Net	232			91			141
Other Comprehensive Income (Loss)	$	8,753		$	3,455		$	5,298

Six Months Ended June 30, 2017
Net Unrealized Gains (Losses) on Investment Securities:
Net Unrealized Gains (Losses) Arising During the Period	$	12,222		$	4,824		$	7,398
Amounts Reclassified from Accumulated Other Comprehensive Income (Loss) that (Increase) Decrease Net Income:
Amortization of Unrealized Holding (Gains) Losses on Held-to-Maturity Securities ¹	995			393			602
Net Unrealized Gains (Losses) on Investment Securities	13,217			5,217			8,000
Defined Benefit Plans:
Amortization of Net Actuarial Losses (Gains)	645			255			390
Amortization of Prior Service Credit	(161		)	(64		)	(97		)
Defined Benefit Plans, Net	484			191			293
Other Comprehensive Income (Loss)	$	13,701		$	5,408		$	8,293

Six Months Ended June 30, 2016
Net Unrealized Gains (Losses) on Investment Securities:
Net Unrealized Gains (Losses) Arising During the Period	$	22,223		$	8,773		$	13,450
Amounts Reclassified from Accumulated Other Comprehensive Income (Loss) that (Increase) Decrease Net Income:
Amortization of Unrealized Holding (Gains) Losses on Held-to-Maturity Securities ¹	663			262			401
Net Unrealized Gains (Losses) on Investment Securities	22,886			9,035			13,851
Defined Benefit Plans:
Amortization of Net Actuarial Losses (Gains)	626			247			379
Amortization of Prior Service Credit	(161		)	(64		)	(97		)
Defined Benefit Plans, Net	465			183			282
Other Comprehensive Income (Loss)	$	23,351		$	9,218		$	14,133


¹	The amount relates to the amortization/accretion of unrealized net gains and losses related to the Company’s reclassification of available-for-sale investment securities to the held-to-maturity category. The unrealized net gains/losses will be amortized/accreted over the remaining life of the investment securities as an adjustment of yield.

Schedule of accumulated other comprehensive income (loss)

The following table presents the changes in each component of accumulated other comprehensive income (loss), net of tax, for the three and six months ended June 30, 2017 and 2016:



(dollars in thousands)	Investment Securities-Available-for-Sale		Investment Securities-Held-to-Maturity			Defined Benefit Plans			Accumulated Other Comprehensive Income (Loss)
Three Months Ended June 30, 2017
Balance at Beginning of Period	$	5,859	$	(5,979	)	$	(28,746	)	$	(28,866	)
Other Comprehensive Income (Loss) Before Reclassifications	2,809		—			—			2,809
Amounts Reclassified from Accumulated Other Comprehensive Income (Loss)	—		297			147			444
Total Other Comprehensive Income (Loss)	2,809		297			147			3,253
Balance at End of Period	$	8,668	$	(5,682	)	$	(28,599	)	$	(25,613	)

Three Months Ended June 30, 2016
Balance at Beginning of Period	$	20,998	$	(7,000	)	$	(28,720	)	$	(14,722	)
Other Comprehensive Income (Loss) Before Reclassifications	5,011		—			—			5,011
Amounts Reclassified from Accumulated Other Comprehensive Income (Loss)	—		146			141			287
Total Other Comprehensive Income (Loss)	5,011		146			141			5,298
Balance at End of Period	$	26,009	$	(6,854	)	$	(28,579	)	$	(9,424	)

Six Months Ended June 30, 2017
Balance at Beginning of Period	$	1,270	$	(6,284	)	$	(28,892	)	$	(33,906	)
Other Comprehensive Income (Loss) Before Reclassifications	7,398		—			—			7,398
Amounts Reclassified from Accumulated Other Comprehensive Income (Loss)	—		602			293			895
Total Other Comprehensive Income (Loss)	7,398		602			293			8,293
Balance at End of Period	$	8,668	$	(5,682	)	$	(28,599	)	$	(25,613	)

Six Months Ended June 30, 2016
Balance at Beginning of Period	$	12,559	$	(7,255	)	$	(28,861	)	$	(23,557	)
Other Comprehensive Income (Loss) Before Reclassifications	13,450		—			—			13,450
Amounts Reclassified from Accumulated Other Comprehensive Income (Loss)	—		401			282			683
Total Other Comprehensive Income (Loss)	13,450		401			282			14,133
Balance at End of Period	$	26,009	$	(6,854	)	$	(28,579	)	$	(9,424	)

Reclassification out of accumulated other comprehensive income

The following table presents the amounts reclassified out of each component of accumulated other comprehensive income (loss) for the three and six months ended June 30, 2017 and 2016:



Details about Accumulated Other Comprehensive Income (Loss) Components	Amount Reclassified from Accumulated Other Comprehensive Income (Loss)¹						Affected Line Item in the Statement Where Net Income Is Presented
	Three Months Ended June 30,
(dollars in thousands)	2017			2016
Amortization of Unrealized Holding Gains (Losses) on Investment Securities Held-to-Maturity	$	(491	)	$	(242	)	Interest Income
	194			96			Provision for Income Tax
	(297		)	(146		)	Net of Tax

Amortization of Defined Benefit Plan Items
Prior Service Credit ²	80			80
Net Actuarial Losses ²	(322		)	(312		)
	(242		)	(232		)	Total Before Tax
	95			91			Provision for Income Tax
	(147		)	(141		)	Net of Tax

Total Reclassifications for the Period	$	(444	)	$	(287	)	Net of Tax

Details about Accumulated Other Comprehensive Income (Loss) Components	Amount Reclassified from Accumulated Other Comprehensive Income (Loss)¹						Affected Line Item in the Statement Where Net Income Is Presented
	Six Months Ended June 30,
(dollars in thousands)	2017			2016
Amortization of Unrealized Holding Gains (Losses) on Investment Securities Held-to-Maturity	$	(995	)	$	(663	)	Interest Income
	393			262			Provision for Income Tax
	(602		)	(401		)	Net of Tax

Amortization of Defined Benefit Plan Items
Prior Service Credit ²	161			161
Net Actuarial Losses ²	(645		)	(626		)
	(484		)	(465		)	Total Before Tax
	191			183			Provision for Income Tax
	(293		)	(282		)	Net of Tax

Total Reclassifications for the Period	$	(895	)	$	(683	)	Net of Tax


¹	Amounts in parentheses indicate reductions to net income.


²	These accumulated other comprehensive income (loss) components are included in the computation of net periodic benefit cost and are included in Salaries and Benefits on the consolidated statements of income (see Note 10 Pension Plans and Postretirement Benefit Plan for additional details).

Earnings Per Share (Tables)

6 Months Ended

Jun. 30, 2017

Earnings Per Share [Abstract]

Reconciliation of the weighted average number of common shares outstanding for computing diluted earnings per share and antidilutive stock options and restricted stock outstanding

The following is a reconciliation of the weighted average number of common shares outstanding for computing diluted earnings per share and antidilutive stock options and restricted stock outstanding for the three and six months ended June 30, 2017 and 2016:



	Three Months Ended June 30,		Six Months Ended June 30,
	2017	2016	2017	2016
Denominator for Basic Earnings Per Share	42,353,976	42,729,731	42,379,730	42,825,369
Dilutive Effect of Equity Based Awards	304,909	213,229	324,280	207,830
Denominator for Diluted Earnings Per Share	42,658,885	42,942,960	42,704,010	43,033,199

Antidilutive Stock Options and Restricted Stock Outstanding	7,127	—	—	1,438

Business Segments (Tables)

6 Months Ended

Jun. 30, 2017

Segment Reporting [Abstract]

Selected Business Segment Financial Information

Selected business segment financial information as of and for the three and six months ended June 30, 2017 and 2016 were as follows:



(dollars in thousands)	Retail Banking			Commercial Banking			Investment Services			Treasury and Other			Consolidated Total
Three Months Ended June 30, 2017
Net Interest Income	$	66,348		$	41,737		$	6,714		$	(2,520	)	$	112,279
Provision for Credit Losses	3,099			(132		)	(6		)	1,289			4,250
Net Interest Income After Provision for Credit Losses	63,249			41,869			6,720			(3,809		)	108,029
Noninterest Income	21,920			5,876			15,247			2,193			45,236
Noninterest Expense	(52,018		)	(18,407		)	(15,295		)	(2,469		)	(88,189		)
Income Before Provision for Income Taxes	33,151			29,338			6,672			(4,085		)	65,076
Provision for Income Taxes	(11,741		)	(10,325		)	(2,469		)	4,121			(20,414		)
Net Income	$	21,410		$	19,013		$	4,203		$	36		$	44,662
Total Assets as of June 30, 2017	$	5,626,767		$	3,658,867		$	307,529		$	7,388,129		$	16,981,292

Three Months Ended June 30, 2016
Net Interest Income	$	60,041		$	38,151		$	6,037		$	(679	)	$	103,550
Provision for Credit Losses	2,006			(258		)	(5		)	(743		)	1,000
Net Interest Income After Provision for Credit Losses	58,035			38,409			6,042			64			102,550
Noninterest Income	21,771			6,438			15,946			2,364			46,519
Noninterest Expense	(50,758		)	(17,762		)	(14,780		)	(2,771		)	(86,071		)
Income Before Provision for Income Taxes	29,048			27,085			7,208			(343		)	62,998
Provision for Income Taxes	(10,402		)	(9,608		)	(2,667		)	3,924			(18,753		)
Net Income	$	18,646		$	17,477		$	4,541		$	3,581		$	44,245
Total Assets as of June 30, 2016	$	5,076,204		$	3,239,572		$	282,143		$	7,262,982		$	15,860,901

Six Months Ended June 30, 2017
Net Interest Income	$	131,505		$	83,668		$	13,364		$	(6,386	)	$	222,151
Provision for Credit Losses	6,900			(320		)	(11		)	2,081			8,650
Net Interest Income After Provision for Credit Losses	124,605			83,988			13,375			(8,467		)	213,501
Noninterest Income	42,845			11,314			29,796			17,197			101,152
Noninterest Expense	(104,278		)	(36,762		)	(30,766		)	(4,951		)	(176,757		)
Income Before Provision for Income Taxes	63,172			58,540			12,405			3,779			137,896
Provision for Income Taxes	(22,415		)	(20,581		)	(4,590		)	5,528			(42,058		)
Net Income	$	40,757		$	37,959		$	7,815		$	9,307		$	95,838
Total Assets as of June 30, 2017	$	5,626,767		$	3,658,867		$	307,529		$	7,388,129		$	16,981,292

Six Months Ended June 30, 2016
Net Interest Income	$	118,051		$	76,499		$	12,489		$	(465	)	$	206,574
Provision for Credit Losses	4,842			(6,883		)	(11		)	1,052			(1,000		)
Net Interest Income After Provision for Credit Losses	113,209			83,382			12,500			(1,517		)	207,574
Noninterest Income	42,577			14,038			29,971			16,140			102,726
Noninterest Expense	(103,498		)	(35,029		)	(30,207		)	(4,723		)	(173,457		)
Income Before Provision for Income Taxes	52,288			62,391			12,264			9,900			136,843
Provision for Income Taxes	(18,629		)	(22,264		)	(4,537		)	3,042			(42,388		)
Net Income	$	33,659		$	40,127		$	7,727		$	12,942		$	94,455
Total Assets as of June 30, 2016	$	5,076,204		$	3,239,572		$	282,143		$	7,262,982		$	15,860,901

Pension Plans and Postretirement Benefit Plan (Tables)

6 Months Ended

Jun. 30, 2017

Compensation and Retirement Disclosure [Abstract]

Schedule of components of net periodic benefit cost



	Pension Benefits						Postretirement Benefits
(dollars in thousands)	2017			2016			2017			2016
Three Months Ended June 30,
Service Cost	$	—		$	—		$	123		$	137
Interest Cost	1,161			1,209			272			294
Expected Return on Plan Assets	(1,238		)	(1,281		)	—			—
Amortization of:
Prior Service Credit	—			—			(80		)	(80		)
Net Actuarial Losses (Gains)	432			388			(110		)	(76		)
Net Periodic Benefit Cost	$	355		$	316		$	205		$	275

Six Months Ended June 30,
Service Cost	$	—		$	—		$	246		$	274
Interest Cost	2,322			2,418			544			588
Expected Return on Plan Assets	(2,476		)	(2,562		)	—			—
Amortization of:
Prior Service Credit	—			—			(161		)	(161		)
Net Actuarial Losses (Gains)	865			777			(220		)	(151		)
Net Periodic Benefit Cost	$	711		$	633		$	409		$	550

Derivative Financial Instruments (Tables)

6 Months Ended

Jun. 30, 2017

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Schedule of the notional amount and fair value of the derivative financial instruments

The notional amount and fair value of the Company’s derivative financial instruments as of June 30, 2017 and December 31, 2016 were as follows:



		June 30, 2017						December 31, 2016
(dollars in thousands)	Notional Amount			Fair Value			Notional Amount			Fair Value
Interest Rate Lock Commitments		$	52,710	$	1,039			$	55,223	$	1,067
Forward Commitments		59,169		39				104,962		847
Interest Rate Swap Agreements
Receive Fixed/Pay Variable Swaps		382,524		2,405				357,441		1,381
Pay Fixed/Receive Variable Swaps		382,524		(2,075		)		357,441		(1,395		)
Foreign Exchange Contracts		42,172		(151		)		38,172		(757		)

Derivative financial instruments, their fair values, and balance sheet location



Derivative Financial Instruments	June 30, 2017				December 31, 2016
Not Designated as Hedging Instruments ¹	Asset		Liability		Asset		Liability
(dollars in thousands)	Derivatives		Derivatives		Derivatives		Derivatives
Interest Rate Lock Commitments	$	1,042	$	3	$	1,236	$	169
Forward Commitments	126		87		873		26
Interest Rate Swap Agreements	10,974		10,644		11,569		11,583
Foreign Exchange Contracts	141		292		53		810
Total	$	12,283	$	11,026	$	13,731	$	12,588


¹	Asset derivatives are included in other assets and liability derivatives are included in other liabilities in the consolidated statements of condition.

Derivative financial instruments and the amount and location of the net gains or losses recognized in the statements of income



	Location of
Derivative Financial Instruments	Net Gains (Losses)	Three Months Ended						Six Months Ended
Not Designated as Hedging Instruments	Recognized in the	June 30,						June 30,
(dollars in thousands)	Statements of Income	2017			2016			2017			2016
Interest Rate Lock Commitments	Mortgage Banking	$	1,655		$	2,973		$	2,922		$	3,959
Forward Commitments	Mortgage Banking	(465		)	(1,017		)	(889		)	(1,496		)
Interest Rate Swap Agreements	Other Noninterest Income	525			713			680			822
Foreign Exchange Contracts	Other Noninterest Income	796			764			1,846			1,473
Total		$	2,511		$	3,433		$	4,559		$	4,758

- Definition

Tabular disclosure of pertinent information about a derivative or group of derivatives on a disaggregated basis, such as for individual instruments, or small groups of similar instruments. May include a combination of the type of instrument, risks being hedged, notional amount, hedge designation, related hedged item, inception date, maturity date, or other relevant item.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=64837297&loc=d3e41641-113959

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4B
-URI http://asc.fasb.org/extlink&oid=64837297&loc=SL5624163-113959

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=64837297&loc=d3e41678-113959

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=64837297&loc=d3e41638-113959

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1B
-URI http://asc.fasb.org/extlink&oid=64837297&loc=SL5580258-113959

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1A
-URI http://asc.fasb.org/extlink&oid=64837297&loc=SL5579245-113959

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4C
-URI http://asc.fasb.org/extlink&oid=64837297&loc=SL5624171-113959

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=64837297&loc=SL5579240-113959

Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=64837297&loc=d3e41620-113959

Reference 10: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(n)(2))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

+ Details

Commitments, Contingencies, and Guarantees (Tables)

6 Months Ended

Jun. 30, 2017

Commitments and Contingencies Disclosure [Abstract]

Credit commitments

The Company’s credit commitments as of June 30, 2017 and December 31, 2016 were as follows:



(dollars in thousands)	June 30, 2017		December 31, 2016
Unfunded Commitments to Extend Credit	$	2,800,247	$	2,732,734
Standby Letters of Credit	120,070		112,830
Commercial Letters of Credit	17,219		16,269
Total Credit Commitments	$	2,937,536	$	2,861,833

Fair Value of Assets and Liabilities (Tables)

6 Months Ended

Jun. 30, 2017

Fair Value Disclosures [Abstract]

Balances of assets and liabilities measured at fair value on a recurring basis

The table below presents the balances of assets and liabilities measured at fair value on a recurring basis as of June 30, 2017 and December 31, 2016:



	Quoted Prices in Active Markets for Identical Assets or Liabilities		Significant Other Observable Inputs		Significant Unobservable Inputs
(dollars in thousands)	(Level 1)		(Level 2)		(Level 3)		Total
June 30, 2017
Assets:
Investment Securities Available-for-Sale
Debt Securities Issued by the U.S. Treasury and Government Agencies	$	541	$	432,436	$	—	$	432,977
Debt Securities Issued by States and Political Subdivisions	—		667,881		—		667,881
Debt Securities Issued by Corporations	—		265,249		—		265,249
Mortgage-Backed Securities:
Residential - Government Agencies	—		265,542		—		265,542
Residential - U.S. Government-Sponsored Enterprises	—		609,901		—		609,901
Commercial - Government Agencies	—		75,178		—		75,178
Total Mortgage-Backed Securities	—		950,621		—		950,621
Total Investment Securities Available-for-Sale	541		2,316,187		—		2,316,728
Loans Held for Sale	—		20,354		—		20,354
Mortgage Servicing Rights	—		—		1,548		1,548
Other Assets	25,899		—		—		25,899
Derivatives ¹	—		267		12,016		12,283
Total Assets Measured at Fair Value on a Recurring Basis as of June 30, 2017	$	26,440	$	2,336,808	$	13,564	$	2,376,812

Liabilities:
Derivatives ¹	$	—	$	379	$	10,647	$	11,026
Total Liabilities Measured at Fair Value on a Recurring Basis as of June 30, 2017	$	—	$	379	$	10,647	$	11,026

December 31, 2016
Assets:
Investment Securities Available-for-Sale
Debt Securities Issued by the U.S. Treasury and Government Agencies	$	539	$	408,176	$	—	$	408,715
Debt Securities Issued by States and Political Subdivisions	—		671,799		—		671,799
Debt Securities Issued by Corporations	—		269,179		—		269,179
Mortgage-Backed Securities:
Residential - Government Agencies	—		243,844		—		243,844
Residential - U.S. Government-Sponsored Enterprises	—		506,987		—		506,987
Commercial - Government Agencies	—		85,517		—		85,517
Total Mortgage-Backed Securities	—		836,348		—		836,348
Total Investment Securities Available-for-Sale	539		2,185,502		—		2,186,041
Loans Held for Sale	—		62,499		—		62,499
Mortgage Servicing Rights	—		—		1,655		1,655
Other Assets	21,952		—		—		21,952
Derivatives ¹	—		926		12,805		13,731
Total Assets Measured at Fair Value on a Recurring Basis as of December 31, 2016	$	22,491	$	2,248,927	$	14,460	$	2,285,878

Liabilities:
Derivatives ¹	$	—	$	836	$	11,752	$	12,588
Total Liabilities Measured at Fair Value on a Recurring Basis as of December 31, 2016	$	—	$	836	$	11,752	$	12,588


¹	The fair value of each class of derivatives is shown in Note 11 Derivative Financial Instruments.

Changes in Level 3 assets and liabilities measured at fair value on a recurring basis

For the three and six months ended June 30, 2017 and 2016, the changes in Level 3 assets and liabilities measured at fair value on a recurring basis were as follows:



(dollars in thousands)	Mortgage Servicing Rights ¹			Net Derivative Assets and Liabilities ²
Three Months Ended June 30, 2017
Balance as of April 1, 2017	$	1,586		$	1,248
Realized and Unrealized Net Gains (Losses):
Included in Net Income	(38		)	1,640
Transfers to Loans Held for Sale	—			(1,877		)
Variation Margin Payments	—			358
Balance as of June 30, 2017	$	1,548		$	1,369
Total Unrealized Net Gains (Losses) Included in Net Income Related to Assets Still Held as of June 30, 2017	$	—		$	1,369

Three Months Ended June 30, 2016
Balance as of April 1, 2016	$	1,910		$	371
Realized and Unrealized Net Gains (Losses):
Included in Net Income	(91		)	2,883
Transfers to Loans Held for Sale	—			(1,346		)
Balance as of June 30, 2016	$	1,819		$	1,908
Total Unrealized Net Gains (Losses) Included in Net Income Related to Assets Still Held as of June 30, 2016	$	—		$	1,908

Six Months Ended June 30, 2017
Balance as of January 1, 2017	$	1,655		$	1,053
Realized and Unrealized Net Gains (Losses):
Included in Net Income	(107		)	2,908
Transfers to Loans Held for Sale	—			(2,950		)
Variation Margin Payments	—			358
Balance as of June 30, 2017	$	1,548		$	1,369
Total Unrealized Net Gains (Losses) Included in Net Income Related to Assets Still Held as of June 30, 2017	$	—		$	1,369

Six Months Ended June 30, 2016
Balance as of January 1, 2016	$	1,970		$	240
Realized and Unrealized Net Gains (Losses):
Included in Net Income	(151		)	3,854
Transfers to Loans Held for Sale	—			(2,186		)
Balance as of June 30, 2016	$	1,819		$	1,908
Total Unrealized Net Gains (Losses) Included in Net Income Related to Assets Still Held as of June 30, 2016	$	—		$	1,908


¹	Realized and unrealized gains and losses related to mortgage servicing rights are reported as a component of mortgage banking income in the Company’s consolidated statements of income.


²	Realized and unrealized gains and losses related to interest rate lock commitments are reported as a component of mortgage banking income in the Company’s consolidated statements of income. Realized and unrealized gains and losses related to interest rate swap agreements are reported as a component of other noninterest income in the Company’s consolidated statements of income.

Summary of the significant unobservable inputs



		Significant Unobservable Inputs (weighted-average)					Fair Value
(dollars in thousands)	Valuation Technique	Description	June 30, 2017		Dec. 31, 2016		June 30, 2017		Dec. 31, 2016
Mortgage Servicing Rights	Discounted Cash Flow	Constant Prepayment Rate ¹	8.60	%	8.13	%	$	27,027	$	26,803
		Discount Rate ²	8.87	%	9.33	%

Net Derivative Assets and Liabilities:
Interest Rate Lock Commitments	Pricing Model	Closing Ratio	92.89	%	92.26	%	$	1,039	$	1,067
Interest Rate Swap Agreements	Discounted Cash Flow	Credit Factor	0.25	%	0.13	%	$	330	$	(14	)


¹	Represents annualized loan repayment rate assumption.


²	Derived from multiple interest rate scenarios that incorporate a spread to a market yield curve and market volatilities.

Assets and liabilities measured at fair value on a nonrecurring basis

The following table represents the assets measured at fair value on a nonrecurring basis as of June 30, 2017. There were no assets measured at fair value on a nonrecurring basis as of December 31, 2016.



(dollars in thousands)	Fair Value Hierarchy	Net Carrying Amount		Valuation Allowance
June 30, 2017
Mortgage Servicing Rights - amortization method	Level 3	$	22,923	$	53

Schedule of difference between the aggregate fair value and the aggregate unpaid principal balance of the Company's residential mortgage loans held for sale



(dollars in thousands)	Aggregate Fair Value		Aggregate Unpaid Principal			Aggregate Fair Value Less Aggregate Unpaid Principal
June 30, 2017
Loans Held for Sale	$	20,354		$	19,987		$	367

December 31, 2016
Loans Held for Sale	$	62,499		$	61,782		$	717

Schedule of carrying amount, fair value, and fair value hierarchy of financial instruments



					Fair Value Measurements
	Carrying				Quoted Prices in Active Markets for Identical Assets or Liabilities		Significant Other Observable Inputs		Significant Unobservable Inputs
(dollars in thousands)	Amount		Fair Value		(Level 1)		(Level 2)		(Level 3)
June 30, 2017
Financial Instruments - Assets
Investment Securities Held-to-Maturity	$	3,782,702	$	3,785,641	$	499,838	$	3,285,803	$	—
Loans ¹	9,012,433		9,177,640		—		—		9,177,640

Financial Instruments - Liabilities
Time Deposits	1,683,947		1,679,427		—		1,679,427		—
Securities Sold Under Agreements to Repurchase	505,292		505,271		—		505,271		—
Other Debt ²	257,153		256,654		—		256,654		—

December 31, 2016
Financial Instruments - Assets
Investment Securities Held-to-Maturity	$	3,832,997	$	3,827,527	$	530,940	$	3,296,587	$	—
Loans ¹	8,583,726		8,743,191		—		—		8,743,191

Financial Instruments - Liabilities
Time Deposits	1,217,707		1,213,705		—		1,213,705		—
Securities Sold Under Agreements to Repurchase	523,378		523,374		—		523,374		—
Other Debt ²	257,153		256,718		—		256,718		—


¹	Net of unearned income and the Allowance.


²	Excludes capitalized lease obligations.

- Definition

Tabular disclosure of the application of the fair value option for measurement and reporting of eligible financial assets and liabilities (as defined), as well as certain other eligible items (as defined) included in the statement of financial position, whether such option is elected for a single eligible item or a group of similar eligible items and is in addition to other disclosures concerning fair value which the company may be required to provide. Such disclosure might be expected to include: (1) for items included in the statement of financial position: (a) for each line item in the statement of financial position that includes an item or items for which the fair value option has been elected, provide the aggregate carrying amount of ineligible items included in each line item in the balance sheet, if any; (b) the difference between the aggregate fair value and the aggregate unpaid principal balance (assuming contractual principal amounts and fair value option elected) of: (i) loans and long-term receivables (other than securities otherwise reported at fair value) and (ii) long-term debt instruments; (c) for loans held as assets for which the fair value option has been elected: (i) the aggregate fair value of loans that are 90 days or more past due, (ii) if the policy is to recognize interest income separately from other changes in fair value, the aggregate fair value of loans in nonaccrual status, and (iii) the difference between the aggregate fair value and the aggregate unpaid principal balance for loans that are 90 days or more past due, in nonaccrual status, or both; (2) for items included in the income statement: (a) the amounts of gains and losses from fair value changes included in earnings and in which line in the income statement those gains and losses are reported whether or not combined with gains and losses from items required to be accounted for at fair value; (b) for loans and other receivables held as assets, the estimated amount of gains or losses included in earnings attributable to changes in instrument-specific credit risk; (c) for liabilities with fair values that have been significantly affected during the reporting period by changes in the instrument-specific credit risk, the estimated amount of gains and losses from fair value changes included in earnings that are attributable to changes in the instrument-specific credit risk; and (3) certain other disclosures as required or determined to be provided.

+ References + Details

Summary of Significant Accounting Policies (Variable Interest Entities) (Details 1) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2017	Dec. 31, 2016
Variable Interest Entity [Line Items]
Unfunded commitments to fund low-income housing partnerships	$ 18,107
Other Assets
Variable Interest Entity [Line Items]
Variable Interest Entity, Nonconsolidated, Carrying Amount, Assets	$ 77,500	$ 78,900
Other Liabilities
Variable Interest Entity [Line Items]
Unfunded commitments to fund low-income housing partnerships		$ 16,200
Low-income housing partnerships
Variable Interest Entity [Line Items]
Period over which tax credits or benefits are generally recognized (in years)	10 years
Solar energy partnerships
Variable Interest Entity [Line Items]
Period over which tax credits or benefits are generally recognized (in years)	6 years

Summary of Significant Accounting Policies (Correction of an Immaterial Error to the Financial Statements (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Decrease in loans held-for-sale	$ (150,414)	$ (84,660)
Decrease in proceeds from sales of loans held for sale	(146,478)	(67,983)
Decrease in net change in other assets and liabilities	(21,803)	(11,956)
Decrease in net cash provided by operating activities	97,919	74,380
Loans and Leases	9,387,613	8,331,469	$ 8,949,785
Proceeds from Sales of Loans	112,357	19,055
Increase to net cash used in investing activities	(484,388)	(381,731)
Decrease in transfers from loans to loans held for sale	62,727	$ 101,282
Adjustment For Error Correction, YTD 2016 \| Immaterial Error From Amounts Incorrectly Reported In Prior Period
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Decrease in loans held-for-sale	97,300
Decrease in proceeds from sales of loans held for sale	19,100
Decrease in net change in other assets and liabilities	100
Decrease in net cash provided by operating activities	78,100
Loans and Leases	97,200
Proceeds from Sales of Loans	19,100
Increase to net cash used in investing activities	78,100
Decrease in transfers from loans to loans held for sale	$ (2,300)

Investment Securities (Amortization Cost, Gross Unrealized Gains/Losses, and Fair Value) (Details 1) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Available-for-Sale:
Available-for-Sale: Amortized Cost	$ 2,302,408	$ 2,183,943
Available-for-Sale: Gross Unrealized Gains	26,723	19,539
Available-for-Sale: Gross Unrealized Losses	(12,403)	(17,441)
Available-for-Sale	2,316,728	2,186,041
Held-to-maturity Securities [Abstract]
Held-to-Maturity: Amortized Cost	3,782,702	3,832,997
Held-to-Maturity: Gross Unrealized Gains	34,713	34,274
Held-to-Maturity: Gross Unrealized Losses	(31,774)	(39,744)
Held-to-Maturity: Fair Value	3,785,641	3,827,527
Debt Securities Issued by the U.S. Treasury and Government Agencies
Available-for-Sale:
Available-for-Sale: Amortized Cost	430,208	407,478
Available-for-Sale: Gross Unrealized Gains	3,732	2,531
Available-for-Sale: Gross Unrealized Losses	(963)	(1,294)
Available-for-Sale	432,977	408,715
Debt Securities Issued by States and Political Subdivisions
Available-for-Sale:
Available-for-Sale: Amortized Cost	650,075	662,231
Available-for-Sale: Gross Unrealized Gains	17,905	11,455
Available-for-Sale: Gross Unrealized Losses	(99)	(1,887)
Available-for-Sale	667,881	671,799
Debt Securities Issued by Corporations
Available-for-Sale:
Available-for-Sale: Amortized Cost	268,022	273,044
Available-for-Sale: Gross Unrealized Gains	138	5
Available-for-Sale: Gross Unrealized Losses	(2,911)	(3,870)
Available-for-Sale	265,249	269,179
Residential - Government Agencies
Available-for-Sale:
Available-for-Sale: Amortized Cost	262,834	240,412
Available-for-Sale: Gross Unrealized Gains	3,858	4,577
Available-for-Sale: Gross Unrealized Losses	(1,150)	(1,145)
Available-for-Sale	265,542	243,844
Residential - U.S. Government-Sponsored Enterprises
Available-for-Sale:
Available-for-Sale: Amortized Cost	613,512	511,234
Available-for-Sale: Gross Unrealized Gains	1,090	971
Available-for-Sale: Gross Unrealized Losses	(4,701)	(5,218)
Available-for-Sale	609,901	506,987
Commercial - Government Agencies
Available-for-Sale:
Available-for-Sale: Amortized Cost	77,757	89,544
Available-for-Sale: Gross Unrealized Gains	0	0
Available-for-Sale: Gross Unrealized Losses	(2,579)	(4,027)
Available-for-Sale	75,178	85,517
Mortgage-Backed Securities
Available-for-Sale:
Available-for-Sale: Amortized Cost	954,103	841,190
Available-for-Sale: Gross Unrealized Gains	4,948	5,548
Available-for-Sale: Gross Unrealized Losses	(8,430)	(10,390)
Available-for-Sale	950,621	836,348
Debt Securities Issued by the U.S. Treasury and Government Agencies
Held-to-maturity Securities [Abstract]
Held-to-Maturity: Amortized Cost	500,111	530,149
Held-to-Maturity: Gross Unrealized Gains	613	1,562
Held-to-Maturity: Gross Unrealized Losses	(886)	(771)
Held-to-Maturity: Fair Value	499,838	530,940
Debt Securities Issued by States and Political Subdivisions
Held-to-maturity Securities [Abstract]
Held-to-Maturity: Amortized Cost	240,413	242,295
Held-to-Maturity: Gross Unrealized Gains	14,472	9,991
Held-to-Maturity: Gross Unrealized Losses	0	0
Held-to-Maturity: Fair Value	254,885	252,286
Debt Securities Issued by Corporations
Held-to-maturity Securities [Abstract]
Held-to-Maturity: Amortized Cost	127,666	135,620
Held-to-Maturity: Gross Unrealized Gains	405	416
Held-to-Maturity: Gross Unrealized Losses	(1,326)	(1,528)
Held-to-Maturity: Fair Value	126,745	134,508
Residential - Government Agencies
Held-to-maturity Securities [Abstract]
Held-to-Maturity: Amortized Cost	1,928,530	1,940,076
Held-to-Maturity: Gross Unrealized Gains	15,726	20,567
Held-to-Maturity: Gross Unrealized Losses	(19,602)	(23,861)
Held-to-Maturity: Fair Value	1,924,654	1,936,782
Residential - U.S. Government-Sponsored Enterprises
Held-to-maturity Securities [Abstract]
Held-to-Maturity: Amortized Cost	772,212	752,768
Held-to-Maturity: Gross Unrealized Gains	1,284	798
Held-to-Maturity: Gross Unrealized Losses	(7,144)	(10,919)
Held-to-Maturity: Fair Value	766,352	742,647
Commercial - Government Agencies
Held-to-maturity Securities [Abstract]
Held-to-Maturity: Amortized Cost	213,770	232,089
Held-to-Maturity: Gross Unrealized Gains	2,213	940
Held-to-Maturity: Gross Unrealized Losses	(2,816)	(2,665)
Held-to-Maturity: Fair Value	213,167	230,364
Mortgage-Backed Securities
Held-to-maturity Securities [Abstract]
Held-to-Maturity: Amortized Cost	2,914,512	2,924,933
Held-to-Maturity: Gross Unrealized Gains	19,223	22,305
Held-to-Maturity: Gross Unrealized Losses	(29,562)	(37,445)
Held-to-Maturity: Fair Value	$ 2,904,173	$ 2,909,793

Investment Securities (Contractual Maturities and Narrative) (Details 2) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Available-for-sale Securities, Debt Maturities, Single Maturity Date, Amortized Cost Basis Rolling Maturity[Abstract]
Due in One Year or Less	$ 86,725
Due After One Year Through Five Years	585,928
Due After Five Years Through Ten Years	214,366
Due After Ten Years	31,629
Amortized Cost, Total	918,648
Available-for-sale Securities, Debt Maturities, Single Maturity Date, Rolling Maturities [Abstract]
Due in One Year or Less	86,878
Due After One Year Through Five Years	589,580
Due After Five Years Through Ten Years	223,309
Due After Ten Years	33,904
Fair Value, Total	933,671
Available-for-Sale: Amortized Cost	2,302,408	$ 2,183,943
Available-for-Sale: Fair Value	2,316,728	2,186,041
Held-to-maturity Securities, Debt Maturities, Single Maturity Date, Amortized Cost Basis, Rolling Maturities (Abstract]
Due in One Year or Less	235,104
Due After One Year Through Five Years	335,763
Due After Five Years Through Ten Years	258,942
Due After Ten Years	38,381
Amortized Cost, Total	868,190
Held-to-Maturity Securities, Debt Maturities, Single Maturity Date, Fair Value, Rolling Maturities [Abstract]
Due in One Year or Less	234,882
Due After One Year Through Five Years	338,517
Due After Five Years Through Ten Years	266,850
Due After Ten Years	41,219
Fair Value, Total	881,468
Held-to-Maturity: Amortized Cost	3,782,702
Held-to-Maturity: Fair Value	3,785,641	3,827,527
Carrying value of investment securities which were pledged to secure deposits of gov't entities and repos	2,700,000	2,400,000
Debt Securities Issued by Government Agencies
Available-for-sale Securities, Debt Maturities, Single Maturity Date, Rolling Maturities [Abstract]
Available-for-sale Securities, Debt Securities Issued by Government Agencies and Mortgage-Backed Securities: Amortized Cost	429,657
Available-for-sale Securities, Debt Securities Issued by Government Agencies and Mortgage-Backed Securities: Fair Value	432,436
Residential - Government Agencies
Available-for-sale Securities, Debt Maturities, Single Maturity Date, Rolling Maturities [Abstract]
Available-for-sale Securities, Debt Securities Issued by Government Agencies and Mortgage-Backed Securities: Amortized Cost	262,834
Available-for-sale Securities, Debt Securities Issued by Government Agencies and Mortgage-Backed Securities: Fair Value	265,542
Available-for-Sale: Amortized Cost	262,834	240,412
Available-for-Sale: Fair Value	265,542	243,844
Residential - U.S. Government-Sponsored Enterprises
Available-for-sale Securities, Debt Maturities, Single Maturity Date, Rolling Maturities [Abstract]
Available-for-sale Securities, Debt Securities Issued by Government Agencies and Mortgage-Backed Securities: Amortized Cost	613,512
Available-for-sale Securities, Debt Securities Issued by Government Agencies and Mortgage-Backed Securities: Fair Value	609,901
Available-for-Sale: Amortized Cost	613,512	511,234
Available-for-Sale: Fair Value	609,901	506,987
Commercial - Government Agencies
Available-for-sale Securities, Debt Maturities, Single Maturity Date, Rolling Maturities [Abstract]
Available-for-sale Securities, Debt Securities Issued by Government Agencies and Mortgage-Backed Securities: Amortized Cost	77,757
Available-for-sale Securities, Debt Securities Issued by Government Agencies and Mortgage-Backed Securities: Fair Value	75,178
Available-for-Sale: Amortized Cost	77,757	89,544
Available-for-Sale: Fair Value	75,178	85,517
Mortgage-Backed Securities
Available-for-sale Securities, Debt Maturities, Single Maturity Date, Rolling Maturities [Abstract]
Available-for-sale Securities, Debt Securities Issued by Government Agencies and Mortgage-Backed Securities: Amortized Cost	954,103
Available-for-sale Securities, Debt Securities Issued by Government Agencies and Mortgage-Backed Securities: Fair Value	950,621
Available-for-Sale: Amortized Cost	954,103	841,190
Available-for-Sale: Fair Value	950,621	836,348
Residential - Government Agencies
Held-to-Maturity Securities, Debt Maturities, Single Maturity Date, Fair Value, Rolling Maturities [Abstract]
Held-to-Maturity: Mortgage-Backed Securities: Amortized Cost	1,928,530
Held-to-Maturity: Mortgage-Backed Securities: Fair Value	1,924,654
Held-to-Maturity: Fair Value	1,924,654	1,936,782
Residential - U.S. Government-Sponsored Enterprises
Held-to-Maturity Securities, Debt Maturities, Single Maturity Date, Fair Value, Rolling Maturities [Abstract]
Held-to-Maturity: Mortgage-Backed Securities: Amortized Cost	772,212
Held-to-Maturity: Mortgage-Backed Securities: Fair Value	766,352
Held-to-Maturity: Fair Value	766,352	742,647
Commercial - Government Agencies
Held-to-Maturity Securities, Debt Maturities, Single Maturity Date, Fair Value, Rolling Maturities [Abstract]
Held-to-Maturity: Mortgage-Backed Securities: Amortized Cost	213,770
Held-to-Maturity: Mortgage-Backed Securities: Fair Value	213,167
Held-to-Maturity: Fair Value	213,167	230,364
Mortgage-Backed Securities
Held-to-Maturity Securities, Debt Maturities, Single Maturity Date, Fair Value, Rolling Maturities [Abstract]
Held-to-Maturity: Mortgage-Backed Securities: Amortized Cost	2,914,512
Held-to-Maturity: Mortgage-Backed Securities: Fair Value	2,904,173
Held-to-Maturity: Fair Value	$ 2,904,173	$ 2,909,793

Investment Securities (Gains and Losses on Sales) (Details 3) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Investments, Debt and Equity Securities [Abstract]
Gross Gains on Sales of Investment Securities	$ 0	$ 0	$ 12,467	$ 11,355
Gross Losses on Sales of Investment Securities	(520)	(312)	(854)	(487)
Net Gains (Losses) on Sales of Investment Securities	$ (520)	$ (312)	$ 11,613	$ 10,868

Investment Securities (Unrealized Position - Less than 12 Mos., 12 Mos. or Longer) (Details 4) $ in Thousands	Jun. 30, 2017 USD ($) security	Dec. 31, 2016 USD ($)
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Less Than 12 Months, Fair Value	$ 598,027	$ 863,072
Less Than 12 Months, Gross Unrealized Losses	(5,393)	(8,620)
12 Months or Longer, Fair Value	406,014	384,379
12 Months or Longer, Gross Unrealized Losses	(7,010)	(8,821)
Total Fair Value	1,004,041	1,247,451
Total Gross Unrealized Losses	(12,403)	(17,441)
Held-to-maturity Securities, Continuous Unrealized Loss Position [Abstract]
Less Than 12 Months, Fair Value	1,884,036	1,855,387
Less Than 12 Months, Gross Unrealized Losses	(23,430)	(30,571)
12 Months or Longer, Fair Value	247,754	265,963
12 Months or Longer, Gross Unrealized Losses	(8,344)	(9,173)
Total Fair Value	2,131,790	2,121,350
Total Gross Unrealized Losses	$ (31,774)	(39,744)
Number of Investment Securities in an Unrealized Loss Position \| security	291
Debt Securities Issued by the U.S. Treasury and Government Agencies
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Less Than 12 Months, Fair Value	$ 42,325	143,715
Less Than 12 Months, Gross Unrealized Losses	(285)	(562)
12 Months or Longer, Fair Value	143,773	89,211
12 Months or Longer, Gross Unrealized Losses	(678)	(732)
Total Fair Value	186,098	232,926
Total Gross Unrealized Losses	(963)	(1,294)
Debt Securities Issued by States and Political Subdivisions
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Less Than 12 Months, Fair Value	49,521	211,188
Less Than 12 Months, Gross Unrealized Losses	(99)	(1,873)
12 Months or Longer, Fair Value	0	6,725
12 Months or Longer, Gross Unrealized Losses	0	(14)
Total Fair Value	49,521	217,913
Total Gross Unrealized Losses	(99)	(1,887)
Debt Securities Issued by Corporations
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Less Than 12 Months, Fair Value	62,472	67,332
Less Than 12 Months, Gross Unrealized Losses	(555)	(714)
12 Months or Longer, Fair Value	162,638	196,838
12 Months or Longer, Gross Unrealized Losses	(2,356)	(3,156)
Total Fair Value	225,110	264,170
Total Gross Unrealized Losses	(2,911)	(3,870)
Residential - Government Agencies
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Less Than 12 Months, Fair Value	23,520	38,355
Less Than 12 Months, Gross Unrealized Losses	(56)	(89)
12 Months or Longer, Fair Value	13,814	11,185
12 Months or Longer, Gross Unrealized Losses	(1,094)	(1,056)
Total Fair Value	37,334	49,540
Total Gross Unrealized Losses	(1,150)	(1,145)
Residential - U.S. Government-Sponsored Enterprises
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Less Than 12 Months, Fair Value	420,189	397,385
Less Than 12 Months, Gross Unrealized Losses	(4,398)	(5,218)
12 Months or Longer, Fair Value	10,611	0
12 Months or Longer, Gross Unrealized Losses	(303)	0
Total Fair Value	430,800	397,385
Total Gross Unrealized Losses	(4,701)	(5,218)
Commercial - Government Agencies
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Less Than 12 Months, Fair Value	0	5,097
Less Than 12 Months, Gross Unrealized Losses	0	(164)
12 Months or Longer, Fair Value	75,178	80,420
12 Months or Longer, Gross Unrealized Losses	(2,579)	(3,863)
Total Fair Value	75,178	85,517
Total Gross Unrealized Losses	(2,579)	(4,027)
Mortgage-Backed Securities
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Less Than 12 Months, Fair Value	443,709	440,837
Less Than 12 Months, Gross Unrealized Losses	(4,454)	(5,471)
12 Months or Longer, Fair Value	99,603	91,605
12 Months or Longer, Gross Unrealized Losses	(3,976)	(4,919)
Total Fair Value	543,312	532,442
Total Gross Unrealized Losses	(8,430)	(10,390)
Debt Securities Issued by the U.S. Treasury and Government Agencies
Held-to-maturity Securities, Continuous Unrealized Loss Position [Abstract]
Less Than 12 Months, Fair Value	284,734	169,926
Less Than 12 Months, Gross Unrealized Losses	(886)	(771)
12 Months or Longer, Fair Value	0	0
12 Months or Longer, Gross Unrealized Losses	0	0
Total Fair Value	284,734	169,926
Total Gross Unrealized Losses	(886)	(771)
Debt Securities Issued by Corporations
Held-to-maturity Securities, Continuous Unrealized Loss Position [Abstract]
Less Than 12 Months, Fair Value	65,356	69,601
Less Than 12 Months, Gross Unrealized Losses	(835)	(971)
12 Months or Longer, Fair Value	15,027	15,933
12 Months or Longer, Gross Unrealized Losses	(491)	(557)
Total Fair Value	80,383	85,534
Total Gross Unrealized Losses	(1,326)	(1,528)
Residential - Government Agencies
Held-to-maturity Securities, Continuous Unrealized Loss Position [Abstract]
Less Than 12 Months, Fair Value	856,028	835,227
Less Than 12 Months, Gross Unrealized Losses	(11,817)	(15,313)
12 Months or Longer, Fair Value	222,166	231,377
12 Months or Longer, Gross Unrealized Losses	(7,785)	(8,548)
Total Fair Value	1,078,194	1,066,604
Total Gross Unrealized Losses	(19,602)	(23,861)
Residential - U.S. Government-Sponsored Enterprises
Held-to-maturity Securities, Continuous Unrealized Loss Position [Abstract]
Less Than 12 Months, Fair Value	598,035	693,047
Less Than 12 Months, Gross Unrealized Losses	(7,144)	(10,919)
12 Months or Longer, Fair Value	0	0
12 Months or Longer, Gross Unrealized Losses	0	0
Total Fair Value	598,035	693,047
Total Gross Unrealized Losses	(7,144)	(10,919)
Commercial - Government Agencies
Held-to-maturity Securities, Continuous Unrealized Loss Position [Abstract]
Less Than 12 Months, Fair Value	79,883	87,586
Less Than 12 Months, Gross Unrealized Losses	(2,748)	(2,597)
12 Months or Longer, Fair Value	10,561	18,653
12 Months or Longer, Gross Unrealized Losses	(68)	(68)
Total Fair Value	90,444	106,239
Total Gross Unrealized Losses	(2,816)	(2,665)
Mortgage-Backed Securities
Held-to-maturity Securities, Continuous Unrealized Loss Position [Abstract]
Less Than 12 Months, Fair Value	1,533,946	1,615,860
Less Than 12 Months, Gross Unrealized Losses	(21,709)	(28,829)
12 Months or Longer, Fair Value	232,727	250,030
12 Months or Longer, Gross Unrealized Losses	(7,853)	(8,616)
Total Fair Value	1,766,673	1,865,890
Total Gross Unrealized Losses	$ (29,562)	$ (37,445)

(Interest Income - Taxable/Non-Taxable Invest. Sec.) (Details 5) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Investments, Debt and Equity Securities [Abstract]
Interest Income from Investment Securities, Taxable	$ 26,741	$ 25,567	$ 52,508	$ 51,554
Interest Income from Investment Securities, Non-Taxable	5,012	5,122	10,035	10,340
Total Interest Income from Investment Securities	$ 31,753	$ 30,689	$ 62,543	$ 61,894

Investment Securities (Municipal Bonds Narrative) (Details 6) $ in Millions	6 Months Ended
	Jun. 30, 2017 USD ($)
Schedule of Available-for-sale Securities [Line Items]
Municipal Debt Securities Issued by One Single State or Political Subdivision as Percentage of Total Fair Value of Entire Municipal Debt Securities Threshold	10.00%
HAWAII \| Debt Securities Issued by States and Political Subdivisions
Schedule of Available-for-sale Securities [Line Items]
Debt Securities Issued by State and Political Subdivision, State of Hawaii	$ 528.3
Municipal Debt Securities \| Geographic Concentration Risk \| HAWAII \| Debt Securities Issued by States and Political Subdivisions
Schedule of Available-for-sale Securities [Line Items]
Concentration Risk, Percentage	57.00%
Hawaiian Municipal Debt Securities \| Investment Concentration Risk \| HAWAII \| General Obligation Bond
Schedule of Available-for-sale Securities [Line Items]
Concentration Risk, Percentage	78.00%
Moody's, Aa2 or Better Rating \| Hawaiian Municipal Debt Securities \| Investment Concentration Risk \| HAWAII \| Debt Securities Issued by States and Political Subdivisions
Schedule of Available-for-sale Securities [Line Items]
Concentration Risk, Percentage	94.00%

(FHLB and FRB Stocks) (Details 7) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Investments, Debt and Equity Securities [Abstract]
Federal Home Loan Bank Stock	$ 20,000	$ 20,000
Federal Reserve Bank Stock	20,167	20,063
Total	$ 40,167	$ 40,063

Investment Securities (Visa Class B Restricted Shares Narrative) (Details 8) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017 USD ($) shares	Jun. 30, 2016 USD ($)	Jun. 30, 2017 USD ($) shares	Jun. 30, 2016 USD ($)
Net Investment Income [Line Items]
Gain on Sale of Investment Securities \| $	$ 0	$ 0	$ 12,467	$ 11,355
Visa Class B Restricted Securities
Net Investment Income [Line Items]
Conversion Ratio to Class A shares	1.6483		1.6483
Gain on Sale of Investment Securities \| $	$ 12,500
Sale of investment securities, shares	90,000
Equity securities remaining, shares	90,914		90,914
Visa Class A Unrestricted Securities
Net Investment Income [Line Items]
Equity securities remaining, shares	149,854		149,854

Loans and Leases and the Allowance for Loan and Lease Losses (Loans and Leases Portfolio and Narrative) (Details 1) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
Loan and lease portfolio
Loans and Leases	$ 9,387,613	$ 8,331,469	$ 9,387,613	$ 8,331,469	$ 8,949,785
Net Gains Related to Sales of Residential Mortgage Loans	1,800	4,400	3,200	6,200
Commercial
Loan and lease portfolio
Loans and Leases	3,704,912	3,305,842	3,704,912	3,305,842	3,617,692
Commercial \| Commercial and Industrial
Loan and lease portfolio
Loans and Leases	1,241,953		1,241,953		1,249,791
Commercial \| Commercial Mortgage
Loan and lease portfolio
Loans and Leases	2,009,886		2,009,886		1,889,551
Commercial \| Construction
Loan and lease portfolio
Loans and Leases	248,030		248,030		270,018
Commercial \| Lease Financing
Loan and lease portfolio
Loans and Leases	205,043		205,043		208,332
Consumer
Loan and lease portfolio
Loans and Leases	5,682,701	$ 5,025,627	5,682,701	$ 5,025,627	5,332,093
Consumer \| Residential Mortgage
Loan and lease portfolio
Loans and Leases	3,317,179		3,317,179		3,163,073
Consumer \| Home Equity
Loan and lease portfolio
Loans and Leases	1,473,123		1,473,123		1,334,163
Consumer \| Automobile
Loan and lease portfolio
Loans and Leases	484,092		484,092		454,333
Consumer \| Other
Loan and lease portfolio
Loans and Leases	$ 408,307		$ 408,307		$ 380,524

Loans and Leases and the Allowance for Loan and Lease Losses (Allowance for Loan and Lease Losses) (Details 2) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Dec. 31, 2016	Jun. 30, 2016
Allowance for Loan and Lease Losses:
Balance at Beginning of Period	$ 105,064	$ 104,677	$ 104,273	$ 102,880
Loans and Leases Charged-Off	(5,487)	(3,755)	(11,191)	(8,642)
Recoveries on Loans and Leases Previously Charged-Off	2,526	2,010	4,621	10,694
Net Loans and Leases Recovered (Charged-Off)	(2,961)	(1,745)	(6,570)	2,052
Provision for Credit Losses	4,250	1,000	8,650	(1,000)
Balance at End of Period	106,353	103,932	106,353	103,932
Allowance for Loan and Lease Losses:
Individually Evaluated for Impairment					$ 3,837		$ 3,202
Collectively Evaluated for Impairment					102,516		100,730
Total	105,064	104,677	104,273	102,880	106,353	$ 104,273	103,932
Recorded Investment in Loans and Leases:
Individually Evaluated for Impairment					58,725		60,962
Collectively Evaluated for Impairment					9,328,888		8,270,507
Total Loans and Leases					9,387,613	8,949,785	8,331,469
Commercial
Allowance for Loan and Lease Losses:
Balance at Beginning of Period	66,893	61,810	65,680	60,714
Loans and Leases Charged-Off	(124)	(204)	(298)	(461)
Recoveries on Loans and Leases Previously Charged-Off	266	418	602	7,323
Net Loans and Leases Recovered (Charged-Off)	142	214	304	6,862
Provision for Credit Losses	(853)	5	198	(5,547)
Balance at End of Period	66,182	62,029	66,182	62,029
Allowance for Loan and Lease Losses:
Individually Evaluated for Impairment					45		7
Collectively Evaluated for Impairment					66,137		62,022
Total	66,893	61,810	65,680	60,714	66,182	65,680	62,029
Recorded Investment in Loans and Leases:
Individually Evaluated for Impairment					20,197		22,271
Collectively Evaluated for Impairment					3,684,715		3,283,571
Total Loans and Leases					3,704,912	3,617,692	3,305,842
Consumer
Allowance for Loan and Lease Losses:
Balance at Beginning of Period	38,171	42,867	38,593	42,166
Loans and Leases Charged-Off	(5,363)	(3,551)	(10,893)	(8,181)
Recoveries on Loans and Leases Previously Charged-Off	2,260	1,592	4,019	3,371
Net Loans and Leases Recovered (Charged-Off)	(3,103)	(1,959)	(6,874)	(4,810)
Provision for Credit Losses	5,103	995	8,452	4,547
Balance at End of Period	40,171	41,903	40,171	41,903
Allowance for Loan and Lease Losses:
Individually Evaluated for Impairment					3,792		3,195
Collectively Evaluated for Impairment					36,379		38,708
Total	$ 38,171	$ 42,867	$ 38,593	$ 42,166	40,171	38,593	41,903
Recorded Investment in Loans and Leases:
Individually Evaluated for Impairment					38,528		38,691
Collectively Evaluated for Impairment					5,644,173		4,986,936
Total Loans and Leases					$ 5,682,701	$ 5,332,093	$ 5,025,627

Loans and Leases and the Allowance for Loan and Lease Losses (Aging Analysis) (Details 4) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2017	Dec. 31, 2016	Jun. 30, 2016
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Non-Accrual	$ 14,377	$ 18,075
Total Past Due and Non-Accrual	46,051	67,494
Current	9,341,562	8,882,291
Total Loans and Leases	9,387,613	8,949,785	$ 8,331,469
Non-Accrual Loans and Leases that are Current	$ 2,716	3,059
Number of days non-accrual loans are not past due	30 days
30 - 59 Days Past Due
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	$ 20,209	35,272
60 - 89 Days Past Due
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	4,455	7,077
Past Due 90 Days or More
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	7,010	7,070
Commercial
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Non-Accrual	1,635	1,148
Total Past Due and Non-Accrual	2,025	13,007
Current	3,702,887	3,604,685
Total Loans and Leases	3,704,912	3,617,692	3,305,842
Non-Accrual Loans and Leases that are Current	977	416
Commercial \| 30 - 59 Days Past Due
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	322	10,826
Commercial \| 60 - 89 Days Past Due
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	68	1,033
Commercial \| Past Due 90 Days or More
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	0	0
Commercial \| Commercial and Industrial
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Non-Accrual	175	151
Total Past Due and Non-Accrual	553	11,865
Current	1,241,400	1,237,926
Total Loans and Leases	1,241,953	1,249,791
Non-Accrual Loans and Leases that are Current	78	0
Commercial \| Commercial and Industrial \| 30 - 59 Days Past Due
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	310	10,698
Commercial \| Commercial and Industrial \| 60 - 89 Days Past Due
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	68	1,016
Commercial \| Commercial and Industrial \| Past Due 90 Days or More
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	0	0
Commercial \| Commercial Mortgage
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Non-Accrual	1,460	997
Total Past Due and Non-Accrual	1,472	1,142
Current	2,008,414	1,888,409
Total Loans and Leases	2,009,886	1,889,551
Non-Accrual Loans and Leases that are Current	899	416
Commercial \| Commercial Mortgage \| 30 - 59 Days Past Due
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	12	128
Commercial \| Commercial Mortgage \| 60 - 89 Days Past Due
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	0	17
Commercial \| Commercial Mortgage \| Past Due 90 Days or More
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	0	0
Commercial \| Construction
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Non-Accrual	0	0
Total Past Due and Non-Accrual	0	0
Current	248,030	270,018
Total Loans and Leases	248,030	270,018
Non-Accrual Loans and Leases that are Current	0	0
Commercial \| Construction \| 30 - 59 Days Past Due
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	0	0
Commercial \| Construction \| 60 - 89 Days Past Due
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	0	0
Commercial \| Construction \| Past Due 90 Days or More
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	0	0
Commercial \| Lease Financing
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Non-Accrual	0	0
Total Past Due and Non-Accrual	0	0
Current	205,043	208,332
Total Loans and Leases	205,043	208,332
Non-Accrual Loans and Leases that are Current	0	0
Commercial \| Lease Financing \| 30 - 59 Days Past Due
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	0	0
Commercial \| Lease Financing \| 60 - 89 Days Past Due
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	0	0
Commercial \| Lease Financing \| Past Due 90 Days or More
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	0	0
Consumer
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Non-Accrual	12,742	16,927
Total Past Due and Non-Accrual	44,026	54,487
Current	5,638,675	5,277,606
Total Loans and Leases	5,682,701	5,332,093	$ 5,025,627
Non-Accrual Loans and Leases that are Current	1,739	2,643
Consumer \| 30 - 59 Days Past Due
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	19,887	24,446
Consumer \| 60 - 89 Days Past Due
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	4,387	6,044
Consumer \| Past Due 90 Days or More
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	7,010	7,070
Consumer \| Residential Mortgage
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Non-Accrual	9,337	13,780
Total Past Due and Non-Accrual	15,961	23,504
Current	3,301,218	3,139,569
Total Loans and Leases	3,317,179	3,163,073
Non-Accrual Loans and Leases that are Current	733	1,628
Consumer \| Residential Mortgage \| 30 - 59 Days Past Due
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	3,486	6,491
Consumer \| Residential Mortgage \| 60 - 89 Days Past Due
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	869	106
Consumer \| Residential Mortgage \| Past Due 90 Days or More
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	2,269	3,127
Consumer \| Home Equity
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Non-Accrual	3,405	3,147
Total Past Due and Non-Accrual	8,603	9,911
Current	1,464,520	1,324,252
Total Loans and Leases	1,473,123	1,334,163
Non-Accrual Loans and Leases that are Current	1,006	1,015
Consumer \| Home Equity \| 30 - 59 Days Past Due
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	2,331	3,063
Consumer \| Home Equity \| 60 - 89 Days Past Due
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	524	2,244
Consumer \| Home Equity \| Past Due 90 Days or More
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	2,343	1,457
Consumer \| Automobile
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Non-Accrual	0	0
Total Past Due and Non-Accrual	13,120	14,748
Current	470,972	439,585
Total Loans and Leases	484,092	454,333
Non-Accrual Loans and Leases that are Current	0	0
Consumer \| Automobile \| 30 - 59 Days Past Due
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	11,184	11,692
Consumer \| Automobile \| 60 - 89 Days Past Due
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	1,397	2,162
Consumer \| Automobile \| Past Due 90 Days or More
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	539	894
Consumer \| Other
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Non-Accrual	0	0
Total Past Due and Non-Accrual	6,342	6,324
Current	401,965	374,200
Total Loans and Leases	408,307	380,524
Non-Accrual Loans and Leases that are Current	0	0
Consumer \| Other \| 30 - 59 Days Past Due
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	2,886	3,200
Consumer \| Other \| 60 - 89 Days Past Due
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	1,597	1,532
Consumer \| Other \| Past Due 90 Days or More
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	$ 1,859	$ 1,592

Loans and Leases and the Allowance for Loan and Lease Losses (Impaired Loans) (Details 5) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
Impaired Loans Information:
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	$ 19,254		$ 19,254		$ 20,442
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	29,716		29,716		30,904
Impaired Financing Receivable, with Related Allowance, Recorded Investment	39,471		39,471		40,256
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	44,211		44,211		45,246
Related Allowance for Loan Losses	3,837		3,837		3,555
Recorded Investment	58,725		58,725		60,698
Unpaid Principal Balance	73,927		73,927		76,150
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	19,563	$ 21,661	19,855	$ 23,327
Impaired Financing Receivable, with No Related Allowance, Interest Income Recognized, Accrual Method	162	230	352	431
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	39,967	39,828	40,063	39,896
Impaired Financing Receivable, with Related Allowance, Interest Income Recognized, Accrual Method	499	448	965	897
Impaired Loans Average Recorded Investment	59,530	61,489	59,918	63,223
Impaired Loans Interest Income Recognized	661	678	1,317	1,328
Commercial
Impaired Loans Information:
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	19,254		19,254		20,442
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	29,716		29,716		30,904
Impaired Financing Receivable, with Related Allowance, Recorded Investment	943		943		1,130
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	943		943		1,130
Related Allowance for Loan Losses	45		45		45
Recorded Investment	20,197		20,197		21,572
Unpaid Principal Balance	30,659		30,659		32,034
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	19,563	21,661	19,855	23,327
Impaired Financing Receivable, with No Related Allowance, Interest Income Recognized, Accrual Method	162	230	352	431
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	988	968	1,035	1,075
Impaired Financing Receivable, with Related Allowance, Interest Income Recognized, Accrual Method	13	12	28	32
Impaired Loans Average Recorded Investment	20,551	22,629	20,890	24,402
Impaired Loans Interest Income Recognized	175	242	380	463
Commercial \| Commercial and Industrial
Impaired Loans Information:
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	8,216		8,216		9,556
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	15,178		15,178		16,518
Impaired Financing Receivable, with Related Allowance, Recorded Investment	624		624		765
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	624		624		765
Related Allowance for Loan Losses	13		13		24
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	8,717	10,032	8,996	11,571
Impaired Financing Receivable, with No Related Allowance, Interest Income Recognized, Accrual Method	61	112	142	218
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	657	968	693	1,075
Impaired Financing Receivable, with Related Allowance, Interest Income Recognized, Accrual Method	9	12	20	32
Commercial \| Commercial Mortgage
Impaired Loans Information:
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	9,573		9,573		9,373
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	13,073		13,073		12,873
Impaired Financing Receivable, with Related Allowance, Recorded Investment	319		319		365
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	319		319		365
Related Allowance for Loan Losses	32		32		21
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	9,369	10,059	9,370	10,175
Impaired Financing Receivable, with No Related Allowance, Interest Income Recognized, Accrual Method	77	93	162	162
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	331	0	342	0
Impaired Financing Receivable, with Related Allowance, Interest Income Recognized, Accrual Method	4	0	8	0
Commercial \| Construction
Impaired Loans Information:
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	1,465		1,465		1,513
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	1,465		1,465		1,513
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	1,477	1,570	1,489	1,581
Impaired Financing Receivable, with No Related Allowance, Interest Income Recognized, Accrual Method	24	25	48	51
Consumer
Impaired Loans Information:
Impaired Financing Receivable, with Related Allowance, Recorded Investment	38,528		38,528		39,126
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	43,268		43,268		44,116
Related Allowance for Loan Losses	3,792		3,792		3,510
Recorded Investment	38,528		38,528		39,126
Unpaid Principal Balance	43,268		43,268		44,116
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	38,979	38,860	39,028	38,821
Impaired Financing Receivable, with Related Allowance, Interest Income Recognized, Accrual Method	486	436	937	865
Impaired Loans Average Recorded Investment	38,979	38,860	39,028	38,821
Impaired Loans Interest Income Recognized	486	436	937	865
Consumer \| Residential Mortgage
Impaired Loans Information:
Impaired Financing Receivable, with Related Allowance, Recorded Investment	21,947		21,947		25,625
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	26,686		26,686		30,615
Related Allowance for Loan Losses	3,167		3,167		3,224
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	23,148	27,995	23,974	28,323
Impaired Financing Receivable, with Related Allowance, Interest Income Recognized, Accrual Method	214	250	426	501
Consumer \| Home Equity
Impaired Loans Information:
Impaired Financing Receivable, with Related Allowance, Recorded Investment	1,735		1,735		1,516
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	1,735		1,735		1,516
Related Allowance for Loan Losses	267		267		15
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	1,621	1,511	1,586	1,370
Impaired Financing Receivable, with Related Allowance, Interest Income Recognized, Accrual Method	20	18	37	35
Consumer \| Automobile
Impaired Loans Information:
Impaired Financing Receivable, with Related Allowance, Recorded Investment	12,178		12,178		9,660
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	12,178		12,178		9,660
Related Allowance for Loan Losses	279		279		206
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	11,547	7,422	10,918	7,285
Impaired Financing Receivable, with Related Allowance, Interest Income Recognized, Accrual Method	195	125	364	247
Consumer \| Other
Impaired Loans Information:
Impaired Financing Receivable, with Related Allowance, Recorded Investment	2,668		2,668		2,325
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	2,669		2,669		2,325
Related Allowance for Loan Losses	79		79		$ 65
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	2,663	1,932	2,550	1,843
Impaired Financing Receivable, with Related Allowance, Interest Income Recognized, Accrual Method	$ 57	$ 43	$ 110	$ 82

Loans and Leases and the Allowance for Loan and Lease Losses (Troubled Debt Restructuring & Narrative) (Details 6) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2017 USD ($) contract	Jun. 30, 2016 USD ($) contract	Jun. 30, 2017 USD ($) contract	Jun. 30, 2016 USD ($) contract	Dec. 31, 2016 USD ($)
Information related to loans modified as a TDR
Recorded Investment	$ 57,500		$ 57,500		$ 60,000
Available Commitments to Lend Additional Funds on Loans Modified as TDR			$ 0		$ 400
Number of Contracts \| contract	147	110	337	230
Recorded Investment (as of period end)	$ 7,314	$ 4,643	$ 13,776	$ 7,882
Increase in Allowance (as of period end)	$ 72	$ 30	$ 138	$ 90
Residential Mortgage \| Maximum
Information related to loans modified as a TDR
Period of Time Loan Being Fully Amortized			40 years
Land Loan \| Maximum
Information related to loans modified as a TDR
Period of Time Loan Being Fully Amortized			360 months
Extending Balloon Payments			5 years
Commercial
Information related to loans modified as a TDR
Number of Contracts \| contract	7	16	13	18
Recorded Investment (as of period end)	$ 4,891	$ 2,955	$ 8,331	$ 3,102
Increase in Allowance (as of period end)	$ 11	$ 0	$ 11	$ 2
Commercial \| Commercial and Industrial
Information related to loans modified as a TDR
Number of Contracts \| contract	6	16	11	18
Recorded Investment (as of period end)	$ 4,191	$ 2,955	$ 7,235	$ 3,102
Increase in Allowance (as of period end)	$ 11	$ 0	$ 11	$ 2
Commercial \| Commercial Mortgage
Information related to loans modified as a TDR
Number of Contracts \| contract	1	0	2	0
Recorded Investment (as of period end)	$ 700	$ 0	$ 1,096	$ 0
Increase in Allowance (as of period end)	$ 0	$ 0	$ 0	$ 0
Consumer
Information related to loans modified as a TDR
Number of Contracts \| contract	140	94	324	212
Recorded Investment (as of period end)	$ 2,423	$ 1,688	$ 5,445	$ 4,780
Increase in Allowance (as of period end)	$ 61	$ 30	$ 127	$ 88
Consumer \| Residential Mortgage
Information related to loans modified as a TDR
Number of Contracts \| contract	0	1	0	4
Recorded Investment (as of period end)	$ 0	$ 440	$ 0	$ 1,610
Increase in Allowance (as of period end)	$ 0	$ 0	$ 0	$ 15
Consumer \| Home Equity
Information related to loans modified as a TDR
Number of Contracts \| contract	1	0	1	1
Recorded Investment (as of period end)	$ 4	$ 0	$ 239	$ 478
Increase in Allowance (as of period end)	$ 4	$ 0	$ 4	$ 6
Consumer \| Automobile
Information related to loans modified as a TDR
Number of Contracts \| contract	99	53	209	108
Recorded Investment (as of period end)	$ 2,115	$ 977	$ 4,315	$ 2,008
Increase in Allowance (as of period end)	$ 49	$ 22	$ 99	$ 48
Consumer \| Other
Information related to loans modified as a TDR
Number of Contracts \| contract	40	40	114	99
Recorded Investment (as of period end)	$ 304	$ 271	$ 891	$ 684
Increase in Allowance (as of period end)	$ 8	$ 8	$ 24	$ 19

Loans and Leases and the Allowance for Loan and Lease Losses (Troubled Debt Restructuring's that Defaulted During the Period) (Details 7) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017 USD ($) contract	Jun. 30, 2016 USD ($) contract	Jun. 30, 2017 USD ($) contract	Jun. 30, 2016 USD ($) contract
Information related to loans modified as a TDR
Number of Contracts, TDRs that Defaulted \| contract	30	13	54	30
Recorded Investment (as of period ended), TDRs that Defaulted \| $	$ 404	$ 134	$ 694	$ 1,417
Minimum
Information related to loans modified as a TDR
Default Period Past Due Following Modification of Loans in TDR (in days)			60 days
Commercial
Information related to loans modified as a TDR
Number of Contracts, TDRs that Defaulted \| contract			1	0
Recorded Investment (as of period ended), TDRs that Defaulted \| $			$ 49	$ 0
Commercial \| Commercial and Industrial
Information related to loans modified as a TDR
Number of Contracts, TDRs that Defaulted \| contract			1	0
Recorded Investment (as of period ended), TDRs that Defaulted \| $			$ 49	$ 0
Consumer
Information related to loans modified as a TDR
Number of Contracts, TDRs that Defaulted \| contract	30	13	53	30
Recorded Investment (as of period ended), TDRs that Defaulted \| $	$ 404	$ 134	$ 645	$ 1,417
Consumer \| Residential Mortgage
Information related to loans modified as a TDR
Number of Contracts, TDRs that Defaulted \| contract	0	1	0	3
Recorded Investment (as of period ended), TDRs that Defaulted \| $	$ 0	$ 43	$ 0	$ 1,056
Consumer \| Home Equity
Information related to loans modified as a TDR
Number of Contracts, TDRs that Defaulted \| contract			0	1
Recorded Investment (as of period ended), TDRs that Defaulted \| $			$ 0	$ 162
Consumer \| Automobile
Information related to loans modified as a TDR
Number of Contracts, TDRs that Defaulted \| contract	12	3	17	4
Recorded Investment (as of period ended), TDRs that Defaulted \| $	$ 267	$ 21	$ 390	$ 57
Consumer \| Other
Information related to loans modified as a TDR
Number of Contracts, TDRs that Defaulted \| contract	18	9	36	22
Recorded Investment (as of period ended), TDRs that Defaulted \| $	$ 137	$ 70	$ 255	$ 142

Loans and Leases and the Allowance for Loan and Lease Losses (Foreclosure Proceedings Narrative) (Details 8) $ in Millions	Jun. 30, 2017 USD ($)
Loans and Leases and Allowance for Loan and Lease Losses [Abstract]
Consumer mortgage loans collateralized by residential real estate property that are in the process of foreclosure	$ 6.2

Mortgage Servicing Rights (Narrative) (Details 1) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
Transfers and Servicing of Financial Assets [Abstract]
Residential mortgage loans serviced for third parties	$ 2,800.0		$ 2,800.0		$ 2,700.0
Servicing income, including late and ancillary fees	$ 1.8	$ 1.7	$ 3.5	$ 3.5

Mortgage Servicing Rights (Fair value method rollforward) (Details 2) - Mortgage Servicing Rights - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Mortgage servicing rights accounted for under the fair value measurement method [Rollforward]
Balance at Beginning of Period	$ 1,586	$ 1,910	$ 1,655	$ 1,970
Due to Payoffs	(38)	(91)	(107)	(151)
Total Changes in Fair Value of Mortgage Servicing Rights	(38)	(91)	(107)	(151)
Balance at End of Period	$ 1,548	$ 1,819	$ 1,548	$ 1,819

Mortgage Servicing Rights (Amortization method rollforward) (Details 3) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Valuation Allowance for Impairment of Mortgage Servicing Rights Accounted for under the Amortization Method [Roll Forward]
Balance at End of Period	$ (53)		$ (53)
Mortgage Servicing Rights
Mortgage Servicing Rights Accounted for Under the Amortization Method {Rollforward)
Balance at Beginning of Period	22,705	$ 20,753	22,008	$ 21,032
Servicing Rights that Resulted From Asset Transfers	961	329	2,276	771
Amortization	(690)	(677)	(1,308)	(1,313)
Valuation Allowance Provision	(53)	(2,593)	(53)	(2,678)
Balance at End of Period	22,923	17,812	22,923	17,812
Valuation Allowance for Impairment of Mortgage Servicing Rights Accounted for under the Amortization Method [Roll Forward]
Balance at Beginning of Period	0	(106)	0	(21)
Valuation Allowance Provision	(53)	(2,593)	(53)	(2,678)
Balance at End of Period	(53)	(2,699)	(53)	(2,699)
Fair Value of Mortgage Servicing Rights Accounted for Under the Amortization Method
Beginning of Period	25,946	20,841	25,148	24,804
End of Period	$ 25,479	$ 17,812	$ 25,479	$ 17,812

Mortgage Servicing Rights (Key assumptions) (Details 4) - Mortgage Servicing Rights	6 Months Ended	12 Months Ended
	Jun. 30, 2017	Dec. 31, 2016
Key data and assumptions used in estimating the fair value of mortgage servicing rights
Weighted-Average Constant Prepayment Rate (as a percent)	8.60%	8.13%
Weighted-Average Life (in years)	7 years 2 months 11 days	7 years 5 months 4 days
Weighted-Average Note Rate (as a percent)	4.07%	4.10%
Weighted-Average Discount Rate (as a percent)	8.87%	9.33%

Mortgage Servicing Rights (Sensitivity analysis) (Details 5) - Mortgage Servicing Rights - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Constant Prepayment Rate
Decrease in fair value from 25 basis points (“bps”) adverse change	$ (317)	$ (321)
Decrease in fair value from 50 bps adverse change	(628)	(636)
Discount Rate
Decrease in fair value from 25 bps adverse change	(285)	(288)
Decrease in fair value from 50 bps adverse change	$ (565)	$ (570)

Low Income Housing Tax Credit Partnerships (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
Affordable Housing Tax Credit Investments, Unfunded Commitment [Abstract]
2017	$ 3,173		$ 3,173
2018	8,526		8,526
2019	5,947		5,947
2020	27		27
2021	9		9
Thereafter	425		425
Total Unfunded Commitments	18,107		18,107
Effective Yield Method
Tax credits and other tax benefits recognized	3,439	$ 3,516	6,869	$ 7,032
Amortization Expense in Provision for Income Taxes	2,137	2,174	4,298	4,348
Proportional Amortization Method
Tax credits and other tax benefits recognized	440	259	761	518
Amortization Expense in Provision for Income Taxes	358	$ 200	611	400
Net affordable housing tax credit investments and related unfunded commitments	$ 66,900		66,900		$ 66,600
Write down from impairment of LIHTC Investments			$ 0	$ 0

Balance Sheet Offsetting (Assets and liabilities subject to MNA, or repurchase agreements) (Details 2) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Liabilities:
Repurchase Agreements, Gross Amounts of Recognized Liabilities	$ 505,292	$ 523,378
Repurchase Agreements, Gross Amounts Offset in the Statements of Condition	0	0
Repurchase Agreements, Net Amounts of Liabilities Presented in the Statements of Condition	505,292	523,378
Repurchase Agreements, Fair Value of Collateral Pledged	505,292	523,378
Securities Sold under Agreements to Repurchase, Net Amount Offset Against Collateral	0	0
Interest Rate Swap Agreements
Offsetting Assets and Liabilities [Line items]
Net liability positions, aggregate fair value	5,200	5,500
Institutional Counterparties \| Interest Rate Swap Agreements
Assets:
Gross Amounts of Recognized Assets	4,285	5,094
Gross Amounts Offset in the Statements of Condition	0	0
Net Amounts of Assets Presented in the Statements of Condition	4,285	5,094
Netting Adjustments per Master Netting Arrangements	4,285	5,094
Gross Amounts Not Offset in the Statements of Condition - FV of collateral pledged	0	0
Derivative Assets, Net Amount	0	0
Liabilities:
Gross Amounts of Recognized Liabilities	6,360	6,489
Gross Amounts Offset in the Statements of Condition	0	0
Net Amounts of Liabilities Presented in the Statements of Condition	6,360	6,489
Derivative Liability, Netting Adjustments per Master Netting Arrangements	4,285	5,094
Derivative, Collateral, Right to Reclaim Securities	1,498	500
Derivative Liabilities, Net Amount	577	895
Private Institutions
Offsetting Assets and Liabilities [Line items]
Securities Sold under Agreements to Repurchase, Fair Value of Collateral	575,500	599,300
Liabilities:
Repurchase Agreements, Gross Amounts of Recognized Liabilities	500,000	500,000
Repurchase Agreements, Gross Amounts Offset in the Statements of Condition	0	0
Repurchase Agreements, Net Amounts of Liabilities Presented in the Statements of Condition	500,000	500,000
Repurchase Agreements, Fair Value of Collateral Pledged	500,000	500,000
Securities Sold under Agreements to Repurchase, Net Amount Offset Against Collateral	0	0
Government Entities
Offsetting Assets and Liabilities [Line items]
Securities Sold under Agreements to Repurchase, Fair Value of Collateral	7,100	28,900
Liabilities:
Repurchase Agreements, Gross Amounts of Recognized Liabilities	5,292	23,378
Repurchase Agreements, Gross Amounts Offset in the Statements of Condition	0	0
Repurchase Agreements, Net Amounts of Liabilities Presented in the Statements of Condition	5,292	23,378
Repurchase Agreements, Fair Value of Collateral Pledged	5,292	23,378
Securities Sold under Agreements to Repurchase, Net Amount Offset Against Collateral	$ 0	$ 0

Accumulated Other Comprehensive Income (Loss) (AOCI Components Pre Post & Tax Effect) (Details 1) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Other Comprehensive Income (Loss), Before Tax:
Net Unrealized Gains (Losses) Arising During the Period	$ 4,642	$ 8,279	$ 12,222	$ 22,223
Amortization of Unrealized Holding (Gains) Losses on HTM Securities	491	242	995	663
Net Unrealized Gains (Losses) on Investment Securities	5,133	8,521	13,217	22,886
Amortization of Net Actuarial Losses (Gains)	322	312	645	626
Amortization of Prior Service Credit	(80)	(80)	(161)	(161)
Defined Benefit Plans, Net	242	232	484	465
Other Comprehensive Income (Loss)	5,375	8,753	13,701	23,351
Other Comprehensive Income (Loss), Tax Effect:
Net Unrealized Gains (Losses) Arising During the Period	1,833	3,268	4,824	8,773
Amortization of Unrealized Holding (Gains) Losses on HTM Securities	194	96	393	262
Net Unrealized Gains (Losses) on Investment Securities	2,027	3,364	5,217	9,035
Amortization of Net Actuarial Losses (Gains)	127	123	255	247
Amortization of Prior Service Credit	(32)	(32)	(64)	(64)
Defined Benefit Plans, Net	95	91	191	183
Other Comprehensive Income (Loss)	2,122	3,455	5,408	9,218
Other Comprehensive Income (Loss), Net of Tax:
Net Unrealized Gains (Losses) Arising During the Period	2,809	5,011	7,398	13,450
Amortization of Unrealized Holding (Gains) Losses on HTM Securities	297	146	602	401
Net Unrealized Gains (Losses) on Investment Securities	3,106	5,157	8,000	13,851
Amortization of Net Actuarial Losses (Gains)	195	189	390	379
Amortization of Prior Service Credit	(48)	(48)	(97)	(97)
Defined Benefit Plans, Net	147	141	293	282
Total Other Comprehensive Income	$ 3,253	$ 5,298	$ 8,293	$ 14,133

Accumulated Other Comprehensive Income (Loss) (Change in AOCI Components net of tax) (Details 2) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance at Beginning of Period			$ 1,161,537	$ 1,116,260
Total Other Comprehensive Income	$ 3,253	$ 5,298	8,293	14,133
Balance at End of Period	1,213,757	1,157,219	1,213,757	1,157,219
Defined Benefit Plans
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance at Beginning of Period	(28,746)	(28,720)	(28,892)	(28,861)
Other Comprehensive Income (Loss) Before Reclassifications	0	0	0	0
Amounts Reclassified from Accumulated Other Comprehensive Income (Loss)	147	141	293	282
Total Other Comprehensive Income	147	141	293	282
Balance at End of Period	(28,599)	(28,579)	(28,599)	(28,579)
Accumulated Other Comprehensive Income (Loss)
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance at Beginning of Period	(28,866)	(14,722)	(33,906)	(23,557)
Other Comprehensive Income (Loss) Before Reclassifications	2,809	5,011	7,398	13,450
Amounts Reclassified from Accumulated Other Comprehensive Income (Loss)	444	287	895	683
Total Other Comprehensive Income	3,253	5,298	8,293	14,133
Balance at End of Period	(25,613)	(9,424)	(25,613)	(9,424)
Available-for-sale Securities \| Unrealized Gains and Losses on Net Investment Securities
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance at Beginning of Period	5,859	20,998	1,270	12,559
Other Comprehensive Income (Loss) Before Reclassifications	2,809	5,011	7,398	13,450
Amounts Reclassified from Accumulated Other Comprehensive Income (Loss)	0	0	0	0
Total Other Comprehensive Income	2,809	5,011	7,398	13,450
Balance at End of Period	8,668	26,009	8,668	26,009
Held-to-maturity Securities \| Unrealized Gains and Losses on Net Investment Securities
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance at Beginning of Period	(5,979)	(7,000)	(6,284)	(7,255)
Other Comprehensive Income (Loss) Before Reclassifications	0	0	0	0
Amounts Reclassified from Accumulated Other Comprehensive Income (Loss)	297	146	602	401
Total Other Comprehensive Income	297	146	602	401
Balance at End of Period	$ (5,682)	$ (6,854)	$ (5,682)	$ (6,854)

Accumulated Other Comprehensive Income (Loss) (AOCI Reclass to IS) (Details 3) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Reclassification Out of Accumulated Other Comprehensive Income [Line Items]
Salaries and Benefits	$ (50,113)	$ (50,289)	$ (101,715)	$ (100,803)
Tax Benefit (Expense)	(20,414)	(18,753)	(42,058)	(42,388)
Net Income	44,662	44,245	95,838	94,455
Reclassification out of Accumulated Other Comprehensive Income
Reclassification Out of Accumulated Other Comprehensive Income [Line Items]
Net Income	(444)	(287)	(895)	(683)
Amortization of Unrealized Gains(Losses) of Investment Securities Transferred from AFS to HTM \| Reclassification out of Accumulated Other Comprehensive Income
Reclassification Out of Accumulated Other Comprehensive Income [Line Items]
Interest Income	(491)	(242)	(995)	(663)
Tax Benefit (Expense)	194	96	393	262
Net Income	(297)	(146)	(602)	(401)
Amortization of Defined Benefit Pension Items \| Reclassification out of Accumulated Other Comprehensive Income
Reclassification Out of Accumulated Other Comprehensive Income [Line Items]
Salaries and Benefits	(242)	(232)	(484)	(465)
Tax Benefit (Expense)	95	91	191	183
Net Income	(147)	(141)	(293)	(282)
Prior Service Credit \| Reclassification out of Accumulated Other Comprehensive Income
Reclassification Out of Accumulated Other Comprehensive Income [Line Items]
Salaries and Benefits	80	80	161	161
Net Actuarial Losses \| Reclassification out of Accumulated Other Comprehensive Income
Reclassification Out of Accumulated Other Comprehensive Income [Line Items]
Salaries and Benefits	$ (322)	$ (312)	$ (645)	$ (626)

Earnings Per Share (Details) - shares	3 Months Ended		6 Months Ended
Earnings Per Share (Details) - shares	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Reconciliation of Diluted Shares
Denominator for Basic Earnings Per Share (in shares)	42,353,976	42,729,731	42,379,730	42,825,369
Dilutive Effect of Equity Based Awards (in shares)	304,909	213,229	324,280	207,830
Denominator for Diluted Earnings Per Share (in shares)	42,658,885	42,942,960	42,704,010	43,033,199
Antidilutive Stock Options and Restricted Stock Outstanding (in shares)	7,127	0	0	1,438

Business Segments (Business Segments Financial Information and Narrative) (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017 USD ($)	Jun. 30, 2016 USD ($)	Jun. 30, 2017 USD ($) atm branch	Jun. 30, 2016 USD ($)	Dec. 31, 2016 USD ($)
Business segment financial information
Federal and State effective tax rate used for segment reporting			37.00%
Net Interest Income	$ 112,279	$ 103,550	$ 222,151	$ 206,574
Provision for Credit Losses	4,250	1,000	8,650	(1,000)
Net Interest Income After Provision for Credit Losses	108,029	102,550	213,501	207,574
Noninterest Income	45,236	46,519	101,152	102,726
Noninterest Expense	(88,189)	(86,071)	(176,757)	(173,457)
Income Before Provision for Income Taxes	65,076	62,998	137,896	136,843
Provision for Income Taxes	(20,414)	(18,753)	(42,058)	(42,388)
Net Income	44,662	44,245	95,838	94,455
Total Assets	16,981,292	15,860,901	$ 16,981,292	15,860,901	$ 16,492,367
Retail Banking
Business segment financial information
Number of branch locations through which products and services are delivered to customers \| branch			69
Number of ATM's through which products and services are delivered to customers \| atm			388
Net Interest Income	66,348	60,041	$ 131,505	118,051
Provision for Credit Losses	3,099	2,006	6,900	4,842
Net Interest Income After Provision for Credit Losses	63,249	58,035	124,605	113,209
Noninterest Income	21,920	21,771	42,845	42,577
Noninterest Expense	(52,018)	(50,758)	(104,278)	(103,498)
Income Before Provision for Income Taxes	33,151	29,048	63,172	52,288
Provision for Income Taxes	(11,741)	(10,402)	(22,415)	(18,629)
Net Income	21,410	18,646	40,757	33,659
Total Assets	5,626,767	5,076,204	5,626,767	5,076,204
Commercial Banking
Business segment financial information
Net Interest Income	41,737	38,151	83,668	76,499
Provision for Credit Losses	(132)	(258)	(320)	(6,883)
Net Interest Income After Provision for Credit Losses	41,869	38,409	83,988	83,382
Noninterest Income	5,876	6,438	11,314	14,038
Noninterest Expense	(18,407)	(17,762)	(36,762)	(35,029)
Income Before Provision for Income Taxes	29,338	27,085	58,540	62,391
Provision for Income Taxes	(10,325)	(9,608)	(20,581)	(22,264)
Net Income	19,013	17,477	37,959	40,127
Total Assets	3,658,867	3,239,572	3,658,867	3,239,572
Investment Services
Business segment financial information
Net Interest Income	6,714	6,037	13,364	12,489
Provision for Credit Losses	(6)	(5)	(11)	(11)
Net Interest Income After Provision for Credit Losses	6,720	6,042	13,375	12,500
Noninterest Income	15,247	15,946	29,796	29,971
Noninterest Expense	(15,295)	(14,780)	(30,766)	(30,207)
Income Before Provision for Income Taxes	6,672	7,208	12,405	12,264
Provision for Income Taxes	(2,469)	(2,667)	(4,590)	(4,537)
Net Income	4,203	4,541	7,815	7,727
Total Assets	307,529	282,143	307,529	282,143
Treasury and Other
Business segment financial information
Net Interest Income	(2,520)	(679)	(6,386)	(465)
Provision for Credit Losses	1,289	(743)	2,081	1,052
Net Interest Income After Provision for Credit Losses	(3,809)	64	(8,467)	(1,517)
Noninterest Income	2,193	2,364	17,197	16,140
Noninterest Expense	(2,469)	(2,771)	(4,951)	(4,723)
Income Before Provision for Income Taxes	(4,085)	(343)	3,779	9,900
Provision for Income Taxes	4,121	3,924	5,528	3,042
Net Income	36	3,581	9,307	12,942
Total Assets	$ 7,388,129	$ 7,262,982	$ 7,388,129	$ 7,262,982

Pension Plans and Postretirement Benefit Plan (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Pension Benefits
Net periodic benefit cost for pension plans and the postretirement benefit plan
Service Cost	$ 0	$ 0	$ 0	$ 0
Interest Cost	1,161	1,209	2,322	2,418
Expected Return on Plan Assets	(1,238)	(1,281)	(2,476)	(2,562)
Amortization of Prior Service Credit	0	0	0	0
Amortization of Net Actuarial Losses (Gains)	432	388	865	777
Net Periodic Benefit Cost	355	316	711	633
Employer Contributions	100		200
Estimated Future Employer Contributions in Current Fiscal Year			10,500
Postretirement Benefits
Net periodic benefit cost for pension plans and the postretirement benefit plan
Service Cost	123	137	246	274
Interest Cost	272	294	544	588
Expected Return on Plan Assets	0	0	0	0
Amortization of Prior Service Credit	(80)	(80)	(161)	(161)
Amortization of Net Actuarial Losses (Gains)	(110)	(76)	(220)	(151)
Net Periodic Benefit Cost	205	$ 275	409	$ 550
Employer Contributions	$ 300		500
Estimated Future Employer Contributions in Current Fiscal Year			$ 1,000

Derivative Financial Instruments (Notional Amounts) (Details 1) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Interest Rate Lock Commitments
Derivative [Line Items]
Notional Amount	$ 52,710	$ 55,223
Fair Value	1,039	1,067
Forward Commitments
Derivative [Line Items]
Notional Amount	59,169	104,962
Fair Value	39	847
Receive Fixed / Pay Variable Swap
Derivative [Line Items]
Notional Amount	382,524	357,441
Fair Value	2,405	1,381
Pay Fixed / Receive Variable Swap
Derivative [Line Items]
Notional Amount	382,524	357,441
Fair Value	(2,075)	(1,395)
Foreign Exchange Contracts
Derivative [Line Items]
Notional Amount	42,172	38,172
Fair Value	$ (151)	$ (757)

Derivative Financial Instruments (Assets and liabilities) (Details 2) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Derivative Financial Instruments Not Designated as Hedging Instruments
Asset Derivatives	$ 12,283	$ 13,731
Liability Derivatives	11,026	12,588
Interest Rate Lock Commitments
Derivative Financial Instruments Not Designated as Hedging Instruments
Asset Derivatives	1,042	1,236
Liability Derivatives	3	169
Forward Commitments
Derivative Financial Instruments Not Designated as Hedging Instruments
Asset Derivatives	126	873
Liability Derivatives	87	26
Interest Rate Swap Agreements
Derivative Financial Instruments Not Designated as Hedging Instruments
Asset Derivatives	10,974	11,569
Liability Derivatives	10,644	11,583
Foreign Exchange Contracts
Derivative Financial Instruments Not Designated as Hedging Instruments
Asset Derivatives	141	53
Liability Derivatives	$ 292	$ 810

Derivative Financial Instruments (Net gains or losses) (Details 3) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Derivative Instruments, Gain (Loss)
Net gains (losses) recognized in the statements of income	$ 2,511	$ 3,433	$ 4,559	$ 4,758
Interest Rate Lock Commitments \| Mortgage Banking Income
Derivative Instruments, Gain (Loss)
Net gains (losses) recognized in the statements of income	1,655	2,973	2,922	3,959
Forward Commitments \| Mortgage Banking Income
Derivative Instruments, Gain (Loss)
Net gains (losses) recognized in the statements of income	(465)	(1,017)	(889)	(1,496)
Interest Rate Swap Agreements \| Other Noninterest Income
Derivative Instruments, Gain (Loss)
Net gains (losses) recognized in the statements of income	525	713	680	822
Foreign Exchange Contracts \| Other Noninterest Income
Derivative Instruments, Gain (Loss)
Net gains (losses) recognized in the statements of income	$ 796	$ 764	$ 1,846	$ 1,473

Derivative Financial Instruments (Narrative) (Details 4) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Derivative [Line Items]
Reduction of swap liabilities caused by variation margin payments	$ 400
Liability Derivatives	11,026	$ 12,588
Visa Conversion Rate Swap Agreement
Derivative [Line Items]
Liability Derivatives	$ 0

Commitments, Contingencies, and Guarantees (Credit Commitments) (Details 1) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Credit Commitments [Line Items]
Credit Commitments	$ 2,937,536	$ 2,861,833
Unfunded Commitments to Extend Credit
Credit Commitments [Line Items]
Credit Commitments	2,800,247	2,732,734
Standby Letters of Credit
Credit Commitments [Line Items]
Credit Commitments	120,070	112,830
Commercial Letters of Credit
Credit Commitments [Line Items]
Credit Commitments	$ 17,219	$ 16,269

Commitments, Contingencies, and Guarantees (Narrative) (Details 2) - Residential Mortgage $ in Millions	6 Months Ended
	Jun. 30, 2017 USD ($) Loan
Representations and Warranties [Line Items]
Continuing Involvement with Transferred Financial Assets, Principal Amount Outstanding \| $	$ 2,600.0
Number of Mortgage Loans Repurchased	1
Unpaid principal balance of repurchased mortgage loans \| $	$ 0.2
Number of Mortgage Loans Repurchased, Pending	0
Number of Mortgage Loans Repurchased due to Loan Servicing Activities	0
Number of Mortgage Loans Repurchased due to Loan Servicing Activities, Pending	0
Current Residential Mortgage Loans Serviced for Third Parties as Percentage of Total	99.00%

Fair Value of Assets and Liabilities (Narrative) (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Derivative [Line Items]
Liability Derivatives	$ 11,026	$ 12,588
Visa Conversion Rate Swap Agreement
Derivative [Line Items]
Liability Derivatives	$ 0

Fair Value of Assets and Liabilities (Fair value on recurring basis) (Details 1) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Assets:
Available-for-Sale: Fair Value	$ 2,316,728	$ 2,186,041
Loans Held for Sale	20,354	62,499
Fair Value, Measurements, Recurring
Assets:
Available-for-Sale: Fair Value	2,316,728	2,186,041
Loans Held for Sale	20,354	62,499
Mortgage Servicing Rights	1,548	1,655
Other Assets	25,899	21,952
Derivatives	12,283	13,731
Total Assets Measured at Fair Value on a Recurring Basis	2,376,812	2,285,878
Liabilites:
Derivatives	11,026	12,588
Total Liabilities Measured at Fair Value on a Recurring Basis	11,026	12,588
Fair Value, Measurements, Recurring \| Debt Securities Issued by the U.S. Treasury and Government Agencies
Assets:
Available-for-Sale: Fair Value	432,977	408,715
Fair Value, Measurements, Recurring \| Debt Securities Issued by States and Political Subdivisions
Assets:
Available-for-Sale: Fair Value	667,881	671,799
Fair Value, Measurements, Recurring \| Debt Securities Issued by Corporations
Assets:
Available-for-Sale: Fair Value	265,249	269,179
Fair Value, Measurements, Recurring \| Mortgage-Backed Securities
Assets:
Available-for-Sale: Fair Value	950,621	836,348
Fair Value, Measurements, Recurring \| Residential - Government Agencies
Assets:
Available-for-Sale: Fair Value	265,542	243,844
Fair Value, Measurements, Recurring \| Residential - U.S. Government-Sponsored Enterprises
Assets:
Available-for-Sale: Fair Value	609,901	506,987
Fair Value, Measurements, Recurring \| Commercial - Government Agencies
Assets:
Available-for-Sale: Fair Value	75,178	85,517
Fair Value, Measurements, Recurring \| Quoted Prices in Active Markets for Identical Assets or Liabilities (Level 1)
Assets:
Available-for-Sale: Fair Value	541	539
Loans Held for Sale	0	0
Mortgage Servicing Rights	0	0
Other Assets	25,899	21,952
Derivatives	0	0
Total Assets Measured at Fair Value on a Recurring Basis	26,440	22,491
Liabilites:
Derivatives	0	0
Total Liabilities Measured at Fair Value on a Recurring Basis	0	0
Fair Value, Measurements, Recurring \| Quoted Prices in Active Markets for Identical Assets or Liabilities (Level 1) \| Debt Securities Issued by the U.S. Treasury and Government Agencies
Assets:
Available-for-Sale: Fair Value	541	539
Fair Value, Measurements, Recurring \| Quoted Prices in Active Markets for Identical Assets or Liabilities (Level 1) \| Debt Securities Issued by States and Political Subdivisions
Assets:
Available-for-Sale: Fair Value	0	0
Fair Value, Measurements, Recurring \| Quoted Prices in Active Markets for Identical Assets or Liabilities (Level 1) \| Debt Securities Issued by Corporations
Assets:
Available-for-Sale: Fair Value	0	0
Fair Value, Measurements, Recurring \| Quoted Prices in Active Markets for Identical Assets or Liabilities (Level 1) \| Mortgage-Backed Securities
Assets:
Available-for-Sale: Fair Value	0	0
Fair Value, Measurements, Recurring \| Quoted Prices in Active Markets for Identical Assets or Liabilities (Level 1) \| Residential - Government Agencies
Assets:
Available-for-Sale: Fair Value	0	0
Fair Value, Measurements, Recurring \| Quoted Prices in Active Markets for Identical Assets or Liabilities (Level 1) \| Residential - U.S. Government-Sponsored Enterprises
Assets:
Available-for-Sale: Fair Value	0	0
Fair Value, Measurements, Recurring \| Quoted Prices in Active Markets for Identical Assets or Liabilities (Level 1) \| Commercial - Government Agencies
Assets:
Available-for-Sale: Fair Value	0	0
Fair Value, Measurements, Recurring \| Significant Other Observable Inputs (Level 2)
Assets:
Available-for-Sale: Fair Value	2,316,187	2,185,502
Loans Held for Sale	20,354	62,499
Mortgage Servicing Rights	0	0
Other Assets	0	0
Derivatives	267	926
Total Assets Measured at Fair Value on a Recurring Basis	2,336,808	2,248,927
Liabilites:
Derivatives	379	836
Total Liabilities Measured at Fair Value on a Recurring Basis	379	836
Fair Value, Measurements, Recurring \| Significant Other Observable Inputs (Level 2) \| Debt Securities Issued by the U.S. Treasury and Government Agencies
Assets:
Available-for-Sale: Fair Value	432,436	408,176
Fair Value, Measurements, Recurring \| Significant Other Observable Inputs (Level 2) \| Debt Securities Issued by States and Political Subdivisions
Assets:
Available-for-Sale: Fair Value	667,881	671,799
Fair Value, Measurements, Recurring \| Significant Other Observable Inputs (Level 2) \| Debt Securities Issued by Corporations
Assets:
Available-for-Sale: Fair Value	265,249	269,179
Fair Value, Measurements, Recurring \| Significant Other Observable Inputs (Level 2) \| Mortgage-Backed Securities
Assets:
Available-for-Sale: Fair Value	950,621	836,348
Fair Value, Measurements, Recurring \| Significant Other Observable Inputs (Level 2) \| Residential - Government Agencies
Assets:
Available-for-Sale: Fair Value	265,542	243,844
Fair Value, Measurements, Recurring \| Significant Other Observable Inputs (Level 2) \| Residential - U.S. Government-Sponsored Enterprises
Assets:
Available-for-Sale: Fair Value	609,901	506,987
Fair Value, Measurements, Recurring \| Significant Other Observable Inputs (Level 2) \| Commercial - Government Agencies
Assets:
Available-for-Sale: Fair Value	75,178	85,517
Fair Value, Measurements, Recurring \| Significant Other Unobservable Inputs (Level 3)
Assets:
Available-for-Sale: Fair Value	0	0
Loans Held for Sale	0	0
Mortgage Servicing Rights	1,548	1,655
Other Assets	0	0
Derivatives	12,016	12,805
Total Assets Measured at Fair Value on a Recurring Basis	13,564	14,460
Liabilites:
Derivatives	10,647	11,752
Total Liabilities Measured at Fair Value on a Recurring Basis	10,647	11,752
Fair Value, Measurements, Recurring \| Significant Other Unobservable Inputs (Level 3) \| Debt Securities Issued by the U.S. Treasury and Government Agencies
Assets:
Available-for-Sale: Fair Value	0	0
Fair Value, Measurements, Recurring \| Significant Other Unobservable Inputs (Level 3) \| Debt Securities Issued by States and Political Subdivisions
Assets:
Available-for-Sale: Fair Value	0	0
Fair Value, Measurements, Recurring \| Significant Other Unobservable Inputs (Level 3) \| Debt Securities Issued by Corporations
Assets:
Available-for-Sale: Fair Value	0	0
Fair Value, Measurements, Recurring \| Significant Other Unobservable Inputs (Level 3) \| Mortgage-Backed Securities
Assets:
Available-for-Sale: Fair Value	0	0
Fair Value, Measurements, Recurring \| Significant Other Unobservable Inputs (Level 3) \| Residential - Government Agencies
Assets:
Available-for-Sale: Fair Value	0	0
Fair Value, Measurements, Recurring \| Significant Other Unobservable Inputs (Level 3) \| Residential - U.S. Government-Sponsored Enterprises
Assets:
Available-for-Sale: Fair Value	0	0
Fair Value, Measurements, Recurring \| Significant Other Unobservable Inputs (Level 3) \| Commercial - Government Agencies
Assets:
Available-for-Sale: Fair Value	$ 0	$ 0

Fair Value of Assets and Liabilities (FV on recurring basis-Level 3 rollforward) (Details 2) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Fair Value, Mortgage Servicing Rights Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Fair Value, Mortgage Servicing Rights, Beginning Balance	$ 1,586	$ 1,910	$ 1,655	$ 1,970
Fair Value, Mortgage Servicing Rights, Realized and Unrealized Net Gains (Losses) Included in Net Income	(38)	(91)	(107)	(151)
Fair Value, Mortgage Servicing Rights, Ending Balance	1,548	1,819	1,548	1,819
Fair Value, Mortgage Service Rights, Total Unrealized Net Gains (Losses) Included in Net Income Related to Assets Still Held	0	0	0	0
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Fair Value, Net Derivative Assets and Liabilities, Beginning Balance	1,248	371	1,053	240
Fair Value, Net Derivative Assets and Liabilities, Realized and Unrealized Net Gains (Losses) Included in Net Income	1,640	2,883	2,908	3,854
Fair Value, Net Derivative Assets and Liabilities, Transfers to Loans Held for Sale	(1,877)	(1,346)	(2,950)	(2,186)
Variation margin payments for swap liabilities	358		358
Fair Value, Net Derivative Assets and Liabilities, Ending Balance	1,369	1,908	1,369	1,908
Fair Value, Net Derivative Assets and Liabilities,Total Unrealized Net Gains (Losses) Included in Net Income Related to Assets Still Held	$ 1,369	$ 1,908	$ 1,369	$ 1,908

Fair Value of Assets and Liabilities (FV on recurring or nonrecurring basis-level 3 inputs) (Details 3) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2017	Dec. 31, 2016
Interest Rate Lock Commitments \| Pricing Model
Level 3 Assets and Liabilities, Fair Value and Fair Value Unobservable Inputs
Weighted Average Closing Ratio (as a percent)	92.89%	92.26%
Interest Rate Derivative Instruments Not Designated as Hedging Instruments at Fair Value, Net	$ 1,039	$ 1,067
Interest Rate Swap Agreements \| Discounted Cash Flow
Level 3 Assets and Liabilities, Fair Value and Fair Value Unobservable Inputs
Weighted Average Credit Factor (as a percent)	0.25%	0.13%
Interest Rate Derivative Instruments Not Designated as Hedging Instruments at Fair Value, Net	$ 330	$ (14)
Mortgage Servicing Rights \| Discounted Cash Flow
Level 3 Assets and Liabilities, Fair Value and Fair Value Unobservable Inputs
Weighted Average Constant Prepayment Rate (as a percent)	8.60%	8.13%
Weighted Average Discount Rate (as a percent)	8.87%	9.33%
Mortgage Servicing Rights, at Fair Value	$ 27,027	$ 26,803

Fair Value of Assets and Liabilities (Fair value on a nonrecurring basis) (Details 4) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Mortgage Servicing Rights accounted for under the amortization method, valuation allowance	$ 53
Foreclosed Real Estate	1,991	$ 1,686
Fair Value, Measurements, Nonrecurring \| Significant Other Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Mortgage Servicing Rights accounted for under the amortization method	$ 22,923

Fair Value of Assets and Liabilities (FV option) (Details 5) - Residential mortgage loans held for sale - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Fair Value Option
Aggregate Fair Value	$ 20,354	$ 62,499
Aggregate Unpaid Principal	19,987	61,782
Aggregate Fair Value Less Aggregate Unpaid Principal	$ 367	$ 717

Fair Value of Assets and Liabilities (Financial instruments not recorded at FV on recurring basis) (Details 6) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Financial Instruments - Assets
Held-to-Maturity: Fair Value	$ 3,785,641	$ 3,827,527
Carrying Amount
Financial Instruments - Assets
Held-to-Maturity: Fair Value	3,782,702	3,832,997
Loans	9,012,433	8,583,726
Financial Instruments - Liabilities
Time Deposits	1,683,947	1,217,707
Securities Sold Under Agreements to Repurchase	505,292	523,378
Other Debt	257,153	257,153
Fair Value
Financial Instruments - Assets
Held-to-Maturity: Fair Value	3,785,641	3,827,527
Loans	9,177,640	8,743,191
Financial Instruments - Liabilities
Time Deposits	1,679,427	1,213,705
Securities Sold Under Agreements to Repurchase	505,271	523,374
Other Debt	256,654	256,718
Fair Value \| Quoted Prices in Active Markets for Identical Assets (Level 1)
Financial Instruments - Assets
Held-to-Maturity: Fair Value	499,838	530,940
Loans	0	0
Financial Instruments - Liabilities
Time Deposits	0	0
Securities Sold Under Agreements to Repurchase	0	0
Other Debt	0	0
Fair Value \| Significant Other Observable Inputs (Level 2)
Financial Instruments - Assets
Held-to-Maturity: Fair Value	3,285,803	3,296,587
Loans	0	0
Financial Instruments - Liabilities
Time Deposits	1,679,427	1,213,705
Securities Sold Under Agreements to Repurchase	505,271	523,374
Other Debt	256,654	256,718
Fair Value \| Significant Other Unobservable Inputs (Level 3)
Financial Instruments - Assets
Held-to-Maturity: Fair Value	0	0
Loans	9,177,640	8,743,191
Financial Instruments - Liabilities
Time Deposits	0	0
Securities Sold Under Agreements to Repurchase	0	0
Other Debt	$ 0	$ 0

Balance Sheet Offsetting (Repos - by maturity date and collateral type) (Details 1) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Securities Sold Under Agreements to Repurchase
Securities Sold under Agreements to Repurchase	$ 505,292	$ 523,378
Debt Securities Issued by the U.S. Treasury and Government Agencies
Securities Sold Under Agreements to Repurchase
Securities Sold under Agreements to Repurchase	306,624	304,681
Debt Securities Issued by States and Political Subdivisions
Securities Sold Under Agreements to Repurchase
Securities Sold under Agreements to Repurchase	4,485	22,640
Mortgage-Backed Securities: Residential - Government Agencies
Securities Sold Under Agreements to Repurchase
Securities Sold under Agreements to Repurchase	101,778	98,019
Mortgage-Backed Securities: Residential - U.S. Government-Sponsored Enterprises
Securities Sold Under Agreements to Repurchase
Securities Sold under Agreements to Repurchase	92,405	98,038
Maturity Up To 90 Days [Member]
Securities Sold Under Agreements to Repurchase
Securities Sold under Agreements to Repurchase	1,502	22,788
Maturity Up To 90 Days [Member] \| Debt Securities Issued by the U.S. Treasury and Government Agencies
Securities Sold Under Agreements to Repurchase
Securities Sold under Agreements to Repurchase	0	0
Maturity Up To 90 Days [Member] \| Debt Securities Issued by States and Political Subdivisions
Securities Sold Under Agreements to Repurchase
Securities Sold under Agreements to Repurchase	695	22,050
Maturity Up To 90 Days [Member] \| Mortgage-Backed Securities: Residential - Government Agencies
Securities Sold Under Agreements to Repurchase
Securities Sold under Agreements to Repurchase	807	738
Maturity Up To 90 Days [Member] \| Mortgage-Backed Securities: Residential - U.S. Government-Sponsored Enterprises
Securities Sold Under Agreements to Repurchase
Securities Sold under Agreements to Repurchase	0	0
Maturity 91 To 365 Days [Member]
Securities Sold Under Agreements to Repurchase
Securities Sold under Agreements to Repurchase	2,790	590
Maturity 91 To 365 Days [Member] \| Debt Securities Issued by the U.S. Treasury and Government Agencies
Securities Sold Under Agreements to Repurchase
Securities Sold under Agreements to Repurchase	0	0
Maturity 91 To 365 Days [Member] \| Debt Securities Issued by States and Political Subdivisions
Securities Sold Under Agreements to Repurchase
Securities Sold under Agreements to Repurchase	2,790	590
Maturity 91 To 365 Days [Member] \| Mortgage-Backed Securities: Residential - Government Agencies
Securities Sold Under Agreements to Repurchase
Securities Sold under Agreements to Repurchase	0	0
Maturity 91 To 365 Days [Member] \| Mortgage-Backed Securities: Residential - U.S. Government-Sponsored Enterprises
Securities Sold Under Agreements to Repurchase
Securities Sold under Agreements to Repurchase	0	0
Maturity 1 To 3 Years [Member]
Securities Sold Under Agreements to Repurchase
Securities Sold under Agreements to Repurchase	1,000	200,000
Maturity 1 To 3 Years [Member] \| Debt Securities Issued by the U.S. Treasury and Government Agencies
Securities Sold Under Agreements to Repurchase
Securities Sold under Agreements to Repurchase	0	200,000
Maturity 1 To 3 Years [Member] \| Debt Securities Issued by States and Political Subdivisions
Securities Sold Under Agreements to Repurchase
Securities Sold under Agreements to Repurchase	1,000	0
Maturity 1 To 3 Years [Member] \| Mortgage-Backed Securities: Residential - Government Agencies
Securities Sold Under Agreements to Repurchase
Securities Sold under Agreements to Repurchase	0	0
Maturity 1 To 3 Years [Member] \| Mortgage-Backed Securities: Residential - U.S. Government-Sponsored Enterprises
Securities Sold Under Agreements to Repurchase
Securities Sold under Agreements to Repurchase	0	0
Maturity After 3 Years [Member]
Securities Sold Under Agreements to Repurchase
Securities Sold under Agreements to Repurchase	500,000	300,000
Maturity After 3 Years [Member] \| Debt Securities Issued by the U.S. Treasury and Government Agencies
Securities Sold Under Agreements to Repurchase
Securities Sold under Agreements to Repurchase	306,624	104,681
Maturity After 3 Years [Member] \| Debt Securities Issued by States and Political Subdivisions
Securities Sold Under Agreements to Repurchase
Securities Sold under Agreements to Repurchase	0	0
Maturity After 3 Years [Member] \| Mortgage-Backed Securities: Residential - Government Agencies
Securities Sold Under Agreements to Repurchase
Securities Sold under Agreements to Repurchase	100,971	97,281
Maturity After 3 Years [Member] \| Mortgage-Backed Securities: Residential - U.S. Government-Sponsored Enterprises
Securities Sold Under Agreements to Repurchase
Securities Sold under Agreements to Repurchase	$ 92,405	$ 98,038