Bank of Hawaii (BOH) 10-K 29 Feb 16 2015 FY Annual report Financial data

Document and Entity Information

Document and Entity Information - USD ($)	12 Months Ended
	Dec. 31, 2015	Feb. 17, 2016	Jun. 30, 2015
Document and Entity Information
Entity Registrant Name	BANK OF HAWAII CORP
Entity Central Index Key	46,195
Document Type	10-K
Document Period End Date	Dec. 31, 2015
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Filer Category	Large Accelerated Filer
Entity Public Float			$ 2,840,055,498
Entity Common Stock, Shares Outstanding		43,104,770
Document Fiscal Year Focus	2,015
Document Fiscal Period Focus	FY

Consolidated Statements of Inco

Consolidated Statements of Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Interest Income
Interest and Fees on Loans and Leases	$ 298,522	$ 267,407	$ 253,276
Income on Investment Securities
Available-for-Sale	41,492	42,475	53,570
Held-to-Maturity	89,650	105,860	90,062
Deposits	8	9	10
Funds Sold	1,133	673	415
Other	1,305	1,209	1,172
Total Interest Income	432,110	417,633	398,505
Interest Expense
Deposits	9,626	9,534	10,143
Securities Sold Under Agreements to Repurchase	25,364	25,905	26,837
Funds Purchased	12	13	44
Short-Term Borrowings	0	0	2
Other Debt	3,021	2,525	2,572
Total Interest Expense	38,023	37,977	39,598
Net Interest Income	394,087	379,656	358,907
Provision for Credit Losses	1,000	(4,864)	0
Net Interest Income After Provision for Credit Losses	393,087	384,520	358,907
Noninterest Income
Trust and Asset Management	47,685	47,798	47,932
Mortgage Banking	11,583	7,571	19,186
Service Charges on Deposit Accounts	34,072	35,669	37,124
Fees, Exchange, and Other Service Charges	53,353	53,401	50,469
Investment Securities Gains (Losses), Net	10,160	8,063	0
Annuity and Insurance	7,664	8,065	9,190
Bank-Owned Life Insurance	7,039	6,639	5,892
Other	14,663	12,811	16,430
Total Noninterest Income	186,219	180,017	186,223
Noninterest Expense
Salaries and Benefits	191,963	183,028	184,211
Net Occupancy	30,217	37,296	38,745
Net Equipment	20,162	18,479	18,366
Data Processing	16,472	14,979	13,840
Professional Fees	9,660	9,794	9,405
FDIC Insurance	8,669	7,936	7,765
Other	70,961	55,387	58,637
Total Noninterest Expense	348,104	326,899	330,969
Income Before Provision for Income Taxes	231,202	237,638	214,161
Provision for Income Taxes	70,498	74,596	63,659
Net Income	$ 160,704	$ 163,042	$ 150,502
Basic Earnings Per Share (in dollars per share)	$ 3.72	$ 3.71	$ 3.39
Diluted Earnings Per Share (in dollars per share)	3.70	3.69	3.38
Dividends Declared Per Share (in dollars per share)	$ 1.80	$ 1.80	$ 1.80
Basic Weighted Average Shares (in shares)	43,217,818	43,899,208	44,380,948
Diluted Weighted Average Shares (in shares)	43,454,877	44,125,456	44,572,725

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Statement of Comprehensive Income [Abstract]
Net Income	$ 160,704	$ 163,042	$ 150,502
Other Comprehensive Income (Loss), Net of Tax:
Net Unrealized Gains (Losses) on Investment Securities	(2,125)	16,858	(69,206)
Defined Benefit Plans, Net	5,254	(11,721)	8,175
Other Comprehensive Income (Loss)	3,129	5,137	(61,031)
Comprehensive Income	$ 163,833	$ 168,179	$ 89,471

Consolidated Statements of Cond

Consolidated Statements of Condition - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Assets
Interest-Bearing Deposits in Other Banks	$ 4,130	$ 2,873
Funds Sold	592,892	360,577
Investment Securities
Available-for-Sale	2,256,818	2,289,190
Held-to-Maturity (Fair Value of $4,006,412 and $4,504,495)	3,982,736	4,466,679
Loans Held for Sale	4,808	5,136
Loans and Leases	7,878,985	6,897,589
Allowance for Loan and Lease Losses	(102,880)	(108,688)
Net Loans and Leases	7,776,105	6,788,901
Total Earning Assets	14,617,489	13,913,356
Cash and Due From Banks	158,699	172,126
Premises and Equipment, Net	111,199	109,854
Accrued Interest Receivable	44,719	44,654
Foreclosed Real Estate	824	2,311
Mortgage Servicing Rights	23,002	24,695
Goodwill	31,517	31,517
Bank-Owned Life Insurance	268,175	262,807
Other Assets	199,392	225,888
Total Assets	15,455,016	14,787,208
Deposits
Noninterest-Bearing Demand	4,286,331	3,832,943
Interest-Bearing Demand	2,761,930	2,559,570
Savings	5,025,191	4,806,575
Time	1,177,651	1,434,001
Total Deposits	13,251,103	12,633,089
Funds Purchased	7,333	8,459
Securities Sold Under Agreements to Repurchase	628,857	688,601
Long-Term Debt	245,786	173,912
Retirement Benefits Payable	47,374	55,477
Accrued Interest Payable	5,032	5,148
Taxes Payable and Deferred Taxes	17,737	27,777
Other Liabilities	135,534	139,659
Total Liabilities	$ 14,338,756	$ 13,732,122
Commitments, Contingencies, and Guarantees (Note 20)
Shareholders' Equity
Common Stock ($.01 par value; authorized 500,000,000 shares; issued / outstanding: December 31, 2015 - 57,749,071 / 43,282,153 and December 31, 2014 - 57,634,755 / 43,724,208)	$ 575	$ 574
Capital Surplus	542,041	531,932
Accumulated Other Comprehensive Loss	(23,557)	(26,686)
Retained Earnings	1,316,260	1,234,801
Treasury Stock, at Cost (Shares: December 31, 2015 - 14,466,918 and December 31, 2014 - 13,910,547)	(719,059)	(685,535)
Total Shareholders' Equity	1,116,260	1,055,086
Total Liabilities and Shareholders' Equity	$ 15,455,016	$ 14,787,208

Consolidated Statements of Con5

Consolidated Statements of Condition (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Statement of Financial Position [Abstract]
Held-to-Maturity, Fair Value	$ 4,006,412	$ 4,504,495
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	57,749,071	57,634,755
Common Stock, outstanding shares	43,282,153	43,724,208
Treasury Stock, Shares	14,466,918	13,910,547

Consolidated Statements of Shar

Consolidated Statements of Shareholders' Equity - 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, 2012	$ 1,021,665	$ 571	$ 515,619	$ 29,208	$ 1,084,477	$ (608,210)
Beginning Balance (in shares) at Dec. 31, 2012		44,754,835
Increase (decrease) in shareholders' equity
Net Income	150,502				150,502
Other Comprehensive Income (Loss)	(61,031)			(61,031)
Share-Based Compensation	5,546		5,546
Common Stock Issued under Purchase and Equity Compensation Plans and Related Tax Benefits	15,483	$ 1	1,340		(2,691)	16,833
Common Stock Issued under Purchase and Equity Compensation Plans and Related Tax Benefits (in shares)		505,691
Common Stock Repurchased	(39,655)					(39,655)
Common Stock Repurchased (in shares)		(770,141)
Cash Dividends Declared ($1.80 per share)	(80,534)				(80,534)
Balance at End of Period at Dec. 31, 2013	1,011,976	$ 572	522,505	(31,823)	1,151,754	(631,032)
Ending Balance (in shares) at Dec. 31, 2013		44,490,385
Increase (decrease) in shareholders' equity
Net Income	163,042				163,042
Other Comprehensive Income (Loss)	5,137			5,137
Share-Based Compensation	7,870		7,870
Common Stock Issued under Purchase and Equity Compensation Plans and Related Tax Benefits	10,767	$ 2	1,557		(335)	9,543
Common Stock Issued under Purchase and Equity Compensation Plans and Related Tax Benefits (in shares)		345,278
Common Stock Repurchased	(64,046)					(64,046)
Common Stock Repurchased (in shares)		(1,111,455)
Cash Dividends Declared ($1.80 per share)	(79,660)				(79,660)
Balance at End of Period at Dec. 31, 2014	$ 1,055,086	$ 574	531,932	(26,686)	1,234,801	(685,535)
Ending Balance (in shares) at Dec. 31, 2014	43,724,208	43,724,208
Increase (decrease) in shareholders' equity
Net Income	$ 160,704				160,704
Other Comprehensive Income (Loss)	3,129			3,129
Share-Based Compensation	7,689		7,689
Common Stock Issued under Purchase and Equity Compensation Plans and Related Tax Benefits	21,000	$ 1	2,420		(878)	19,457
Common Stock Issued under Purchase and Equity Compensation Plans and Related Tax Benefits (in shares)		401,904
Common Stock Repurchased	$ (52,981)					(52,981)
Common Stock Repurchased (in shares)	(802,255)	(843,959)
Cash Dividends Declared ($1.80 per share)	$ (78,367)				(78,367)
Balance at End of Period at Dec. 31, 2015	$ 1,116,260	$ 575	$ 542,041	$ (23,557)	$ 1,316,260	$ (719,059)
Ending Balance (in shares) at Dec. 31, 2015	43,282,153	43,282,153

Consolidated Statements of Sha7

Consolidated Statements of Shareholders' Equity (Parenthetical) - $ / shares	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Statement of Stockholders' Equity [Abstract]
Dividends Declared Per Share (in dollars per share)	$ 1.80	$ 1.80	$ 1.80

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Operating Activities
Net Income	$ 160,704	$ 163,042	$ 150,502
Adjustments to Reconcile Net Income to Net Cash Provided by Operating Activities:
Provision for Credit Losses	1,000	(4,864)	0
Impairment of Equipment Held for Sale	9,453	0	0
Depreciation and Amortization	12,785	12,442	12,128
Amortization of Deferred Loan and Lease Fees	(1,896)	(2,064)	(3,275)
Amortization and Accretion of Premiums/Discounts on Investment Securities, Net	49,698	50,280	58,575
Share-Based Compensation	7,689	7,870	5,546
Benefit Plan Contributions	(1,974)	(1,561)	(1,229)
Deferred Income Taxes	(6,517)	(5,211)	503
Net Gains (Losses) on Sale of Loans and Leases	(4,139)	(2,896)	(19,952)
Net Losses (Gains) on Investment Securities	(10,160)	(8,063)	0
Proceeds from Sales of Loans Held for Sale	188,141	72,096	683,772
Originations of Loans Held for Sale	(183,027)	(68,006)	(652,821)
Tax Benefits from Share-Based Compensation	(1,076)	(670)	(948)
Net Change in Other Assets and Other Liabilities	13,331	(2,915)	9,162
Net Cash Provided by Operating Activities	234,012	209,480	241,963
Investment Securities Available-for-Sale:
Proceeds from Prepayments and Maturities	413,587	325,211	919,579
Proceeds from Sales	67,985	16,574	0
Purchases	(468,573)	(375,620)	(510,548)
Investment Securities Held-to-Maturity:
Proceeds from Prepayments and Maturities	979,007	776,876	1,054,466
Purchases	(518,664)	(525,070)	(1,661,874)
Payments to Acquire Life Insurance Policies	0	(35,000)	0
Net Change in Loans and Leases	(990,315)	(809,382)	(257,158)
Premises and Equipment, Net	(14,130)	(13,660)	(15,759)
Net Cash Provided by (Used in) Investing Activities	(531,103)	(640,071)	(471,294)
Financing Activities
Net Change in Deposits	618,014	718,433	385,174
Net Change in Short-Term Borrowings	(60,870)	(82,971)	9,788
Proceeds from Long-Term Debt	175,000	0	50,000
Repayments of Other Debt	(100,000)	0	0
Tax Benefits from Share-Based Compensation	1,076	670	948
Proceeds from Issuance of Common Stock	15,364	9,995	14,495
Repurchase of Common Stock	(52,981)	(64,046)	(39,655)
Cash Dividends Paid	(78,367)	(79,660)	(80,534)
Net Cash Provided by (Used in) Financing Activities	517,236	502,421	340,216
Net Change in Cash and Cash Equivalents	220,145	71,830	110,885
Cash and Cash Equivalents at End of Period	755,721	535,576	463,746
Cash and Cash Equivalents at Beginning of Period	535,576	463,746	352,861
Supplemental Information
Cash Paid for Interest	37,419	36,795	38,424
Cash Paid for Income Taxes	72,740	72,127	75,166
Non-Cash Investing and Financing Activities:
Transfer from Investment Securities Available-For-Sale to Investment Securities Held-To-Maturity	0	0	579,888
Transfer from Loans to Foreclosed Real Estate	676	3,950	5,429
Transfer of Portfolio Loans and Leases to Held-for-sale	$ 101,803	$ 0	$ 0

Summary of Significant Accounti

Summary of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2015
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 majority of the Company's operations consist of customary commercial and consumer banking services including, but not limited to, lending, leasing, deposit services, trust and investment activities, brokerage services, and trade financing. The accounting and reporting principles of the Company conform to U.S. generally accepted accounting principles ("GAAP") and prevailing practices within the financial services industry. 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. Certain prior period information has been reclassified to conform to the current year presentation. The following is a summary of the Company's significant accounting policies: Consolidation The Consolidated Financial Statements include the accounts of the Parent and its subsidiaries. The Parent's principal operating subsidiary is Bank of Hawaii (the "Bank"). All significant intercompany accounts and transactions have been eliminated in consolidation. 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 a limited partnership interest in several low-income housing partnerships. These partnerships provide funds for the construction and operation of apartment complexes that provide affordable housing to that segment of the population with lower family income. 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. See Accounting Standards Adopted in 2015 below for more information. Unfunded commitments to fund these low-income housing partnerships were $25.3 million and $31.4 million as of December 31, 2015 and 2014 , respectively. These unfunded commitments are unconditional and legally binding and are recorded in other liabilities in the consolidated statements of condition. The Company also has limited partnership interests in three solar energy tax credit partnership investments. These partnerships develop, build, own and operate solar renewable energy projects. Over the course of the investment, the Company will 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. The tax benefits are generally recognized over 6 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 investment in these entities is 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 $79.0 million and $77.5 million as of December 31, 2015 and 2014 , respectively, and is included in other assets in the consolidated statements of condition. Investment Securities Investment securities are accounted for according to their purpose and holding period. Trading securities are those that are bought and held principally for the purpose of selling them in the near term. The Company held no trading securities as of December 31, 2015 and 2014 . Available-for-sale investment securities, comprised of debt and mortgage-backed securities, are those that may be sold before maturity due to changes in the Company's interest rate risk profile or funding needs, and are reported at fair value with unrealized gains and losses, net of taxes, reported as a component of other comprehensive income. Held-to-maturity investment securities, comprised of debt and mortgage-backed securities, are those that management has the positive intent and ability to hold to maturity and are reported at amortized cost. Realized gains and losses are recorded in noninterest income and are determined on a trade date basis using the specific identification method. Interest and dividends on investment securities are recognized in interest income on an accrual basis. Premiums and discounts are amortized or accreted into interest income using the interest method over the expected lives of the individual securities. Transfers of debt securities from the available-for-sale category to the held-to-maturity category are made at fair value at the date of transfer. The unrealized holding gain or loss at the date of transfer remains in accumulated other comprehensive income and in the carrying value of the held-to-maturity investment security. Premiums or discounts on investment securities are amortized or accreted as an adjustment of yield using the interest method over the estimated life of the security. Unrealized holding gains or losses that remain in accumulated other comprehensive income are also amortized or accreted over the estimated life of the security as an adjustment of yield, offsetting the related amortization of the premium or accretion of the discount. Other-Than-Temporary-Impairments of Investment Securities The Company conducts an other-than-temporary-impairment ("OTTI") analysis of investment securities on a quarterly basis or more often if a potential loss-triggering event occurs. A write-down of a debt security is recorded when fair value is below amortized cost in circumstances where: (1) the Company has the intent to sell a security; (2) it is more likely than not that the Company will be required to sell the security before recovery of its amortized cost basis; or (3) the Company does not expect to recover the entire amortized cost basis of the security. If the Company intends to sell a security or if it is more likely than not that the Company will be required to sell the security before recovery, an OTTI write-down is recognized in earnings equal to the entire difference between the security's amortized cost basis and its fair value. If the Company does not intend to sell the security or it is not more likely than not that it will be required to sell the security before recovery, the OTTI write-down is separated into an amount representing credit loss, which is recognized in earnings, and an amount related to all other factors, which is recognized in other comprehensive income. To determine the amount related to credit loss on a debt security, the Company applies a methodology similar to that used for evaluating the impairment of loans. As of December 31, 2015 , management determined that the Company did not own any investment securities that were other-than-temporarily-impaired. Loans Held for Sale Residential mortgage loans with the intent to be sold in the secondary market are accounted for on an aggregate basis under the fair value option. Fair value is primarily determined based on quoted prices for similar loans in active markets. Non-refundable fees and direct loan origination costs related to residential mortgage loans held for sale are recognized as part of the cost basis of the loan at the time of sale. Gains and losses on sales of residential mortgage loans (sales proceeds minus carrying value) are recorded in the mortgage banking component of noninterest income. Commercial loans that management has an active plan to sell are valued on an individual basis at the lower-of-cost-or fair value. Fair value is primarily determined based on quoted prices for similar loans in active markets or agreed upon sales prices. Any reduction in the loan's value, prior to being transferred to the held for sale category, is reflected as a charge-off of the recorded investment in the loan resulting in a new cost basis, with a corresponding reduction in the allowance for loan and lease losses. Further decreases in the fair value of the loan are recognized in noninterest expense. Loans and Leases Loans are reported at the principal amount outstanding, net of unearned income including unamortized deferred loan fees and costs, and cumulative net charge-offs. Interest income is recognized on an accrual basis. Loan origination fees, certain direct costs, and unearned discounts and premiums, if any, are deferred and are generally amortized into interest income as yield adjustments using the interest method over the contractual life of the loan. Loan commitment fees are generally recognized into noninterest income. Other credit-related fees are recognized as fee income, a component of noninterest income, when earned. Direct financing leases are carried at the aggregate of lease payments receivable plus the estimated residual value of leased property, less unearned income. Leveraged leases, which are a form of direct financing leases, are carried net of non-recourse debt. Unearned income on direct financing and leveraged leases is amortized over the lease term by methods that approximate the interest method. Residual values on leased assets are periodically reviewed for impairment. Portfolio segments are defined as the level at which an entity develops and documents a systematic methodology to determine its allowance for loan and lease losses (the "Allowance"). Management has determined that the Company has two portfolio segments of loans and leases (commercial and consumer) in determining the Allowance. Both quantitative and qualitative factors are used by management at the portfolio segment level in determining the adequacy of the Allowance for the Company. Classes of loans and leases are a disaggregation of a Company's portfolio segments. Classes are defined as a group of loans and leases which share similar initial measurement attributes, risk characteristics, and methods for monitoring and assessing credit risk. Management has determined that the Company has eight classes of loans and leases (commercial and industrial, commercial mortgage, construction, lease financing, residential mortgage, home equity, automobile, and other). The "other" class of loans and leases is comprised of revolving credit, credit cards, installment, and lease financing arrangements. Non-Performing Loans and Leases Generally, all classes of commercial loans and leases are placed on non-accrual status upon becoming contractually past due 90 days as to principal or interest (unless loans and leases are adequately secured by collateral, are in the process of collection, and are reasonably expected to result in repayment), when terms are renegotiated below market levels, or where substantial doubt about full repayment of principal or interest is evident. For residential mortgage and home equity loan classes, loans past due 120 days as to principal or interest may be placed on non-accrual status, and a partial charge-off may be recorded, depending on the collateral value and/or the collectability of the loan. For automobile and other consumer loan classes, the entire outstanding balance of the loan is charged off when the loan becomes 120 days past due (180 days past due for credit cards) as to principal or interest. When a loan or lease is placed on non-accrual status, the accrued and unpaid interest receivable is reversed and the loan or lease is accounted for on the cash or cost recovery method until qualifying for return to accrual status. All payments received on non-accrual loans and leases are applied against the principal balance of the loan or lease. A loan or lease may be returned to accrual status when all delinquent interest and principal become current in accordance with the terms of the loan or lease agreement and when doubt about repayment is resolved. Generally, for all classes of loans and leases, a charge-off is recorded when it is probable that a loss has been incurred and when it is possible to determine a reasonable estimate of the loss. For all classes of commercial loans and leases, a charge-off is determined on a judgmental basis after due consideration of the debtor's prospects for repayment and the fair value of collateral. For the pooled segment of the Company's commercial and industrial loan class, which consists of small business loans, the entire outstanding balance of the loan remains on accrual status until it is charged off during the month that the loan becomes 120 days past due as to principal or interest. As previously mentioned, for residential mortgage and home equity loan classes, a partial charge-off may be recorded at 120 days past due as to principal or interest depending on the collateral value and/or the collectability of the loan. In the event that a loan or line in the home equity loan class is behind another financial institution's first mortgage, the entire outstanding balance of the loan is charged off when the loan becomes 120 days past due as to principal or interest, unless the combined loan-to-value ratio is 60% or less. As noted above, loans in the automobile and other consumer loan classes are charged off in its entirety upon the loan becoming 120 days past due (180 days past due for credit cards) as to principal or interest. Impaired Loans A loan is considered impaired when, based on current information and events, it is probable that the Company will not be able to collect all amounts due from the borrower in accordance with the contractual terms of the loan, including scheduled interest payments. Impaired loans include all classes of commercial non-accruing loans (except lease financing and small business loans), and all loans modified in a troubled debt restructuring. Impaired loans exclude lease financing and smaller balance homogeneous loans (consumer and small business non-accruing loans) that are collectively evaluated for impairment. For all classes of commercial loans, a quarterly evaluation of individual commercial borrowers is performed to identify impaired loans. The identification of specific borrowers for review is based on a review of non-accrual loans as well as those loans specifically identified by management as exhibiting above average levels of risk. When a loan has been identified as being impaired, the amount of impairment 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. If the measurement of the impaired loan is less than the recorded investment in the loan (including accrued interest, net of deferred loan fees or costs, and unamortized premiums or discounts), impairment is recognized by establishing or adjusting an existing allocation of the Allowance, or by recording a partial charge-off of the loan to its fair value. Interest payments made on impaired loans are typically applied to principal unless collectability of the principal amount is reasonably assured, in which case interest income may be accrued or recognized on a cash basis. Loans Modified in a Troubled Debt Restructuring Loans are considered to have been modified in a troubled debt restructuring when, due to a borrower's financial difficulties, the Company makes certain concessions to the borrower that it would not otherwise consider. Modifications may include interest rate reductions, principal or interest forgiveness, forbearance, and other actions intended to minimize economic loss and to avoid foreclosure or repossession of collateral. Generally, a non-accrual loan that has been modified in a troubled debt restructuring remains on non-accrual status for a period of at least 6 months to demonstrate that the borrower is able to meet the terms of the modified loan. However, performance prior to the modification, or significant events that coincide with the modification, are included in assessing whether the borrower can meet the new terms and may result in the loan being returned to accrual status at the time of loan modification or after a shorter performance period. If the borrower's ability to meet the revised payment schedule is uncertain, the loan remains on non-accrual status. Reserve for Credit Losses The Company's reserve for credit losses is comprised of two components, the Allowance and the reserve for unfunded commitments (the "Unfunded Reserve"). Allowance for Loan and Lease Losses The Company maintains an Allowance adequate to cover management's estimate of probable credit losses as of the balance sheet date. Loans and leases that are charged off reduce the Allowance while recoveries of loans and leases previously charged off increase the Allowance. Other changes to the level of the Allowance are recognized through charges or credits to the provision for credit losses (the "Provision"). The Allowance considers both unimpaired and impaired loans and is developed and documented at the portfolio segment level (commercial and consumer). The level of the Allowance related to the Company's commercial portfolio segment is generally based on the credit risk ratings and historical loss experience of individual borrowers. This is supplemented as necessary by credit judgment to address observed changes in trends and conditions, and other relevant environmental and economic factors that may affect the collectability of loans and leases. Excluding those loans and leases evaluated individually for impairment, the Company's remaining commercial loans and leases are pooled and collectively evaluated for impairment based on business unit and internal risk rating segmentation. The level of the Allowance related to the Company's consumer portfolio segment is generally based on analyses of homogeneous pools of loans and leases. Loans and leases are pooled based on similar loan and lease risk characteristics for collective evaluation of impairment. Loss estimates are calculated based on historical rolling average loss rates and average delinquency flows to loss. Consumer loans that have been individually evaluated for impairment or modified in a troubled debt restructuring are excluded from the homogeneous pools. Impairment related to such loans is generally determined based on the present value of expected future cash flows discounted at the loan's original effective interest rate. The Allowance also includes an estimate for inherent losses not reflected in the historical analyses. Relevant factors include, but are not limited to, concentrations of credit risk (geographic, large borrower, and industry), economic trends and conditions, changes in underwriting standards, experience and depth of lending staff, trends in delinquencies, and the level of net charge-offs. In addition, the Company uses a variety of other tools to estimate probable credit losses including, but not limited to, a rolling quarterly forecast of asset quality metrics; stress testing; and performance indicators based on the Company's own experience, peers, or other industry sources. Reserve for Unfunded Commitments The Unfunded Reserve is a component of other liabilities and represents the estimate for probable credit losses inherent in unfunded commitments to extend credit. Unfunded commitments to extend credit include banker's acceptances, and standby and commercial letters of credit. The process used to determine the Unfunded Reserve is consistent with the process for determining the Allowance, as adjusted for estimated funding probabilities or loan and lease equivalency factors. The level of the Unfunded Reserve is adjusted by recording an expense or recovery in other noninterest expense. Cash and Cash Equivalents Cash and cash equivalents include cash and due from banks, interest-bearing deposits in other banks, and funds sold. All amounts are readily convertible to cash and have maturities of less than 90 days. Premises and Equipment Premises and equipment, including leasehold improvements, are stated at cost, less accumulated depreciation and amortization. Capital leases are included in premises and equipment at the capitalized amount less accumulated amortization. Premises and equipment are depreciated using the straight-line method over the estimated useful lives of the respective assets. Estimated useful lives generally range up to 30 years for buildings and up to 10 years for equipment. Capitalized leased assets and leasehold improvements are amortized over the shorter of the estimated useful life of the asset or the lease term. Repairs and maintenance are charged to expense as incurred, while improvements which extend the estimated useful life of the asset are capitalized and depreciated over the estimated remaining life of the asset. Premises and equipment are periodically evaluated for impairment when events or changes in circumstances indicate the carrying amount may not be recoverable. Impairment exists when the expected undiscounted future cash flows of premises and equipment are less than its carrying amount. In that event, the Company records a loss for the difference between the carrying amount and the fair value of the asset based on quoted market prices, if applicable, or a discounted cash flow analysis. Foreclosed Real Estate Foreclosed real estate consists of properties acquired through foreclosure proceedings or acceptance of a deed-in-lieu of foreclosure. These properties are recorded at fair value less estimated costs to sell the property. If the recorded investment in the loan exceeds the property's fair value at the time of acquisition, a charge-off is recorded against the Allowance. If the fair value of the property at the time of acquisition exceeds the carrying amount of the loan, the excess is recorded either as a recovery to the Allowance if a charge-off had previously been recorded, or as a gain on initial transfer in other noninterest income. Subsequent decreases in the property's fair value and operating expenses of the property are recognized through charges to other noninterest expense. The fair value of the property acquired is based on third party appraisals, broker price opinions, recent sales activity, or a combination thereof, subject to management judgment. Mortgage Servicing Rights Mortgage servicing rights are recognized as assets when mortgage loans are sold and the rights to service those loans are retained. Mortgage servicing rights are initially recorded at fair value by using a discounted cash flow model to calculate the present value of estimated future net servicing income. The Company's mortgage servicing rights accounted for under the fair value method are carried on the statements of condition at fair value with changes in fair value recorded in mortgage banking income in the period in which the change occurs. Changes in the fair value of mortgage servicing rights are primarily due to changes in valuation inputs, assumptions, and the collection and realization of expected cash flows. The Company's mortgage servicing rights accounted for under the amortization method are initially recorded at fair value. However, these mortgage servicing rights are amortized in proportion to and over the period of estimated net servicing income. An impairment analysis is prepared on a quarterly basis by estimating the fair value of the mortgage servicing rights and comparing that value to the carrying amount. A valuation allowance is established when the carrying amount of these mortgage servicing rights exceeds fair value. Goodwill Goodwill is initially recorded as the excess of the purchase price over the fair value of the net assets acquired in a business combination and is subsequently evaluated at least annually for impairment. Goodwill impairment testing is performed at the reporting unit level, equivalent to a business segment or one level below. The Company has two reporting units that were assigned goodwill: Investment Services and Retail Banking. The Company performs its annual evaluation of goodwill impairment in the fourth quarter of each year and on an interim basis if events or changes in circumstances indicate that there may be impairment. The Company performs a qualitative assessment to determine whether it is more likely than not that the fair value of a reporting unit is less than its carrying amount. The qualitative factors considered include, but are not limited to, macroeconomic and State of Hawaii economic conditions, industry and market conditions and trends, the Company's financial performance, market capitalization, stock price, and any Company-specific events relevant to the assessment. If the assessment of qualitative factors indicates that it is not more likely than not that an impairment exists, no further testing is performed; otherwise an impairment test is performed. The goodwill impairment test is a two-step test. The first step of the goodwill impairment test compares the estimated fair value of identified reporting units with their carrying amount, including goodwill. If the estimated fair value of a reporting unit is less than the carrying value, the second step must be performed to determine the implied fair value of the reporting unit's goodwill and the amount of goodwill impairment, if any. The implied fair value of goodwill is determined as if the reporting unit were being acquired in a business combination. If the implied fair value of goodwill exceeds the goodwill assigned to the reporting unit, there is no impairment. If the implied fair value of goodwill is less than the carrying amount, a loss would be recognized in other noninterest expense to reduce the carrying amount to the implied fair value of goodwill. Subsequent reversals of goodwill impairment are prohibited. For the year ended December 31, 2015 , the Company's goodwill impairment evaluation indicated that there was no impairment. Non-Marketable Equity Securities The Company is required to own Federal Home Loan Bank ("FHLB") of Des Moines and Federal Reserve Bank ("FRB") stock as a condition of membership. These non-marketable equity securities are accounted for at cost which equals par or redemption value. These securities do not have a readily determinable fair value as their ownership is restricted and there is no market for these securities. 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 are periodically evaluated 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 by recognizing temporary declines in value. Securities Sold Under Agreements to Repurchase 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, securities sold under agreements to repurchase are accounted for as collateralized financing arrangements (i.e., secured borrowings) and not as a sale and subsequent repurchase 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 securities sold under agreements to repurchase remain in the respective asset accounts. See Note 19 (Balance Sheet Offsetting) for more information. Pension and Postretirement Benefit Plans The Company incurs certain employment-related expenses associated with its two frozen pension plans and a postretirement benefit plan (the "Plans"). In order to measure the expense associated with the Plans, various assumptions are made including the discount rate, expected return on plan assets, anticipated mortality rates, and expected future healthcare costs. The assumptions are based on historical experience as well as current facts and circumstances. The Company uses a December 31 measurement date for its Plans. As of the measurement date, plan assets are determined based on fair value, generally representing observable market prices. The projected benefit obligation is primarily determined based on the present value of projected benefit distributions at an assumed discount rate. Net periodic pension benefit costs include interest costs based on an assumed discount rate, the expected return on plan assets based on actuarially derived market-related values, and the amortization of net actuarial gains or losses. Net periodic postretirement benefit costs include service costs, interest costs based on an assumed discount rate, and the amortization of prior service credits and net actuarial gains or losses. Differences between expected and actual results in each year are included in the net actuarial gain or loss amount, which is recognized in other comprehensive income. The net actuarial gain or loss in excess of a 10% corridor is amortized in net periodic benefit cost over the average remaining expected lives of the pension plan participants and over the average remaining future service years of the postretirement benefit plan participants. The prior service credit is amortized over the average remaining service period to full eligibility for participating employees expected to receive benefits. The Company recognizes in its consolidated statements of condition an asset for a plan's overfunded status or a liability for a plan's underfunded status. The Company also measures the Plans' assets and obligations that determine its funded status as of the end of the year and recognizes those changes in other comprehensive income, net of tax. Income Taxes The Parent files a consolidated federal income tax return with the Bank and its subsidiaries. Calculation of the Company's provision for income taxes requires the interpretation of income tax laws and regulations and the use of estimates and judgments in its determination. The Company is subject to examination by governmental authorities that may give rise to income tax issues due to differing interpretations. Changes to the liability for income taxes also occ

Restrictions on Cash

Restrictions on Cash	12 Months Ended
	Dec. 31, 2015
Cash and Cash Equivalents [Abstract]
Restrictions on Cash	The Company is required to maintain cash on hand or on deposit with the Federal Reserve Bank based on the amount of certain customer deposits, mainly checking accounts. The Bank's average required reserve balances were $99.3 million and $92.3 million as of December 31, 2015 and 2014 , respectively.

Investment Securities

Investment Securities	12 Months Ended
	Dec. 31, 2015
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 December 31, 2015 , 2014 , and 2013 were as follows: (dollars in thousands) Amortized Gross Gross Fair December 31, 2015 Available-for-Sale: Debt Securities Issued by the U.S. Treasury and Government Agencies $ 356,260 $ 3,472 $ (838 ) $ 358,894 Debt Securities Issued by States and Political Subdivisions 709,724 22,498 (304 ) 731,918 Debt Securities Issued by Corporations 313,136 236 (4,502 ) 308,870 Mortgage-Backed Securities: Residential - Government Agencies 310,966 6,546 (1,267 ) 316,245 Residential - U.S. Government-Sponsored Enterprises 442,760 1,368 (2,264 ) 441,864 Commercial - Government Agencies 103,227 — (4,200 ) 99,027 Total Mortgage-Backed Securities 856,953 7,914 (7,731 ) 857,136 Total $ 2,236,073 $ 34,120 $ (13,375 ) $ 2,256,818 Held-to-Maturity: Debt Securities Issued by the U.S. Treasury and Government Agencies $ 489,747 $ 1,359 $ (1,139 ) $ 489,967 Debt Securities Issued by States and Political Subdivisions 245,980 17,114 — 263,094 Debt Securities Issued by Corporations 151,301 368 (2,041 ) 149,628 Mortgage-Backed Securities: Residential - Government Agencies 2,191,138 27,893 (19,067 ) 2,199,964 Residential - U.S. Government-Sponsored Enterprises 647,762 1,656 (2,616 ) 646,802 Commercial - Government Agencies 256,808 2,381 (2,232 ) 256,957 Total Mortgage-Backed Securities 3,095,708 31,930 (23,915 ) 3,103,723 Total $ 3,982,736 $ 50,771 $ (27,095 ) $ 4,006,412 December 31, 2014 Available-for-Sale: Debt Securities Issued by the U.S. Treasury and Government Agencies $ 325,365 $ 5,933 $ (40 ) $ 331,258 Debt Securities Issued by States and Political Subdivisions 723,474 21,941 (1,445 ) 743,970 Debt Securities Issued by Corporations 298,272 546 (3,985 ) 294,833 Mortgage-Backed Securities: Residential - Government Agencies 452,493 10,986 (1,043 ) 462,436 Residential - U.S. Government-Sponsored Enterprises 276,390 2,262 (191 ) 278,461 Commercial - Government Agencies 186,813 — (8,581 ) 178,232 Total Mortgage-Backed Securities 915,696 13,248 (9,815 ) 919,129 Total $ 2,262,807 $ 41,668 $ (15,285 ) $ 2,289,190 Held-to-Maturity: Debt Securities Issued by the U.S. Treasury and Government Agencies $ 498,767 $ 2,008 $ (1,159 ) $ 499,616 Debt Securities Issued by States and Political Subdivisions 249,559 15,459 — 265,018 Debt Securities Issued by Corporations 166,686 109 (3,442 ) 163,353 Mortgage-Backed Securities: Residential - Government Agencies 2,862,369 45,407 (20,636 ) 2,887,140 Residential - U.S. Government-Sponsored Enterprises 379,365 3,635 (15 ) 382,985 Commercial - Government Agencies 309,933 241 (3,791 ) 306,383 Total Mortgage-Backed Securities 3,551,667 49,283 (24,442 ) 3,576,508 Total $ 4,466,679 $ 66,859 $ (29,043 ) $ 4,504,495 December 31, 2013 Available-for-Sale: Debt Securities Issued by the U.S. Treasury and Government Agencies $ 390,873 $ 6,640 $ (234 ) $ 397,279 Debt Securities Issued by States and Political Subdivisions 691,861 8,396 (13,455 ) 686,802 Debt Securities Issued by Corporations 280,172 1,165 (7,836 ) 273,501 Mortgage-Backed Securities: Residential - Government Agencies 641,227 13,816 (1,849 ) 653,194 Residential - U.S. Government-Sponsored Enterprises 21,865 1,403 — 23,268 Commercial - Government Agencies 219,859 — (10,206 ) 209,653 Total Mortgage-Backed Securities 882,951 15,219 (12,055 ) 886,115 Total $ 2,245,857 $ 31,420 $ (33,580 ) $ 2,243,697 Held-to-Maturity: Debt Securities Issued by the U.S. Treasury and Government Agencies $ 433,987 $ 3,045 $ (3,667 ) $ 433,365 Debt Securities Issued by States and Political Subdivisions 253,039 817 (133 ) 253,723 Debt Securities Issued by Corporations 190,181 — (5,708 ) 184,473 Mortgage-Backed Securities: Residential - Government Agencies 3,523,343 31,786 (66,572 ) 3,488,557 Residential - U.S. Government-Sponsored Enterprises 21,602 1,423 — 23,025 Commercial - Government Agencies 322,367 — (7,923 ) 314,444 Total Mortgage-Backed Securities 3,867,312 33,209 (74,495 ) 3,826,026 Total $ 4,744,519 $ 37,071 $ (84,003 ) $ 4,697,587 The table below presents an analysis of the contractual maturities of the Company's investment securities as of December 31, 2015 . 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 Fair Value Available-for-Sale: Due in One Year or Less $ 69,889 $ 70,173 Due After One Year Through Five Years 474,444 477,064 Due After Five Years Through Ten Years 408,341 419,001 Due After Ten Years 70,732 75,096 1,023,406 1,041,334 Debt Securities Issued by Government Agencies 355,714 358,348 Mortgage-Backed Securities: Residential - Government Agencies 310,966 316,245 Residential - U.S. Government-Sponsored Enterprises 442,760 441,864 Commercial - Government Agencies 103,227 99,027 Total Mortgage-Backed Securities 856,953 857,136 Total $ 2,236,073 $ 2,256,818 Held-to-Maturity: Due After One Year Through Five Years $ 522,433 $ 523,945 Due After Five Years Through Ten Years 292,951 301,459 Due After Ten Years 71,644 77,285 887,028 902,689 Mortgage-Backed Securities: Residential - Government Agencies 2,191,138 2,199,964 Residential - U.S. Government-Sponsored Enterprises 647,762 646,802 Commercial - Government Agencies 256,808 256,957 Total Mortgage-Backed Securities 3,095,708 3,103,723 Total $ 3,982,736 $ 4,006,412 Investment securities with carrying values of $2.5 billion , $2.8 billion , and $2.6 billion as of December 31, 2015 , 2014 , and 2013 , 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 years ended December 31, 2015 , 2014 , and 2013 . (dollars in thousands) 2015 2014 2013 Gross Gains on Sales of Investment Securities $ 11,640 $ 8,063 $ — Gross Losses on Sales of Investment Securities (1,480 ) — — Net Gains on Sales of Investment Securities $ 10,160 $ 8,063 $ — The securities sold for losses in 2015 were government agency commercial mortgage-backed securities categorized as available-for-sale. These loans were sold to reduce our allocation to the sector and did not represent an overall change in strategy. The income tax expense related to the Company's net realized gains on the sales of investment securities was $4.0 million in 2015 and $3.2 million in 2014 . There were no sales of investment securities in 2013 . The Company's investment securities in an unrealized loss position, segregated by continuous length of impairment, were as follows: Less Than 12 Months 12 Months or Longer Total (dollars in thousands) Fair Value Gross Fair Value Gross Fair Value Gross December 31, 2015 Available-for-Sales: Debt Securities Issued by the U.S. Treasury and Government Agencies $ 144,260 $ (822 ) $ 5,452 $ (16 ) $ 149,712 $ (838 ) Debt Securities Issued by States and Political Subdivisions 72,248 (252 ) 6,798 (52 ) 79,046 (304 ) Debt Securities Issued by Corporations 101,269 (1,747 ) 162,304 (2,755 ) 263,573 (4,502 ) Mortgage-Backed Securities: Residential - Government Agencies 30,679 (130 ) 9,117 (1,137 ) 39,796 (1,267 ) Residential - U.S. Government-Sponsored Enterprises 346,603 (2,264 ) — — 346,603 (2,264 ) Commercial - Government Agencies — — 99,026 (4,200 ) 99,026 (4,200 ) Total Mortgage-Backed Securities 377,282 (2,394 ) 108,143 (5,337 ) 485,425 (7,731 ) Total $ 695,059 $ (5,215 ) $ 282,697 $ (8,160 ) $ 977,756 $ (13,375 ) Held-to-Maturity: Debt Securities Issued by the U.S. Treasury and Government Agencies $ 264,747 $ (1,139 ) $ — $ — $ 264,747 $ (1,139 ) Debt Securities Issued by Corporations 28,218 (66 ) 71,208 (1,975 ) 99,426 (2,041 ) Mortgage-Backed Securities: Residential - Government Agencies 562,502 (5,828 ) 414,207 (13,239 ) 976,709 (19,067 ) Residential - U.S. Government-Sponsored Enterprises 450,147 (2,616 ) — — 450,147 (2,616 ) Commercial - Government Agencies 74,040 (958 ) 52,207 (1,274 ) 126,247 (2,232 ) Total Mortgage-Backed Securities 1,086,689 (9,402 ) 466,414 (14,513 ) 1,553,103 (23,915 ) Total $ 1,379,654 $ (10,607 ) $ 537,622 $ (16,488 ) $ 1,917,276 $ (27,095 ) December 31, 2014 Available-for-Sales: Debt Securities Issued by the U.S. Treasury and Government Agencies $ 1,729 $ (2 ) $ 5,546 $ (38 ) $ 7,275 $ (40 ) Debt Securities Issued by States and Political Subdivisions 78,068 (305 ) 94,543 (1,140 ) 172,611 (1,445 ) Debt Securities Issued by Corporations 73,829 (1,171 ) 180,335 (2,814 ) 254,164 (3,985 ) Mortgage-Backed Securities: Residential - Government Agencies 3,025 (8 ) 12,215 (1,035 ) 15,240 (1,043 ) Residential - U.S. Government-Sponsored Enterprises 103,824 (191 ) — — 103,824 (191 ) Commercial - Government Agencies — — 178,232 (8,581 ) 178,232 (8,581 ) Total Mortgage-Backed Securities 106,849 (199 ) 190,447 (9,616 ) 297,296 (9,815 ) Total $ 260,475 $ (1,677 ) $ 470,871 $ (13,608 ) $ 731,346 $ (15,285 ) Held-to-Maturity: Debt Securities Issued by the U.S. Treasury $ 70,016 $ (134 ) $ 144,222 $ (1,025 ) $ 214,238 $ (1,159 ) Debt Securities Issued by Corporations 46,196 (349 ) 82,109 (3,093 ) 128,305 (3,442 ) Mortgage-Backed Securities: Residential - Government Agencies 280,967 (1,207 ) 845,911 (19,429 ) 1,126,878 (20,636 ) Residential - U.S. Government-Sponsored Enterprises 45,754 (15 ) — — 45,754 (15 ) Commercial - Government Agencies 124,594 (179 ) 171,091 (3,612 ) 295,685 (3,791 ) Total Mortgage-Backed Securities 451,315 (1,401 ) 1,017,002 (23,041 ) 1,468,317 (24,442 ) Total $ 567,527 $ (1,884 ) $ 1,243,333 $ (27,159 ) $ 1,810,860 $ (29,043 ) The Company does not believe that the investment securities that were in an unrealized loss position as of December 31, 2015 , which were comprised of 224 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 December 31, 2015 , 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 bases, which may be at maturity. Interest income from taxable and non-taxable investment securities for the years ended December 31, 2015 , 2014 , and 2013 were as follows: Year Ended December 31, (dollars in thousands) 2015 2014 2013 Taxable $ 109,912 $ 127,128 $ 125,379 Non-Taxable 21,230 21,207 18,253 Total Interest Income from Investment Securities $ 131,142 $ 148,335 $ 143,632 As of December 31, 2015 , included in the Company's investment securities portfolio were debt securities issued by political subdivisions within the State of Hawaii of $575.7 million , representing 58% of the total fair value of the Company's municipal debt securities. Of the entire Hawaii municipal bond portfolio, 91% were credit-rated Aa2 or better by Moody's while most of 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, 77% were general obligation issuances. As of December 31, 2015 , 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 December 31, 2015 and 2014 the carrying value of the Company’s Federal Home Loan Bank of Des Moines (“FHLB Des Moines”) stock and Federal Reserve Bank stock was as follows: December 31, (dollars in thousands) 2015 2014 Federal Home Loan Bank Stock $ 19,000 $ 47,075 Federal Reserve Bank Stock 19,836 19,299 Total $ 38,836 $ 66,374 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 by recognizing temporary declines in value. Effective May 31, 2015, FHLB Des Moines completed its merger with the Federal Home Loan Bank of Seattle (“FHLB Seattle”). The continuing bank, FHLB Des Moines, remains headquartered in Des Moines with a western regional office in Seattle. Prior to the merger, the Company held stock in FHLB Seattle. Pursuant to the terms of the Merger Agreement, each share of FHLB Seattle stock was converted into one share of FHLB Des Moines stock. In addition, upon the merger, the Company's excess FHLB stock was redeemed and the Company’s membership effectively transferred to FHLB Des Moines. The merger did not have a material impact on the Company's Consolidated Financial Statements or the Company's dealings with the continuing bank. 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 December 31, 2015 , the conversion ratio was 1.6483 . For the year ended December 31, 2015 , the Company recorded a $10.1 million net gain on the sale of 95,000 Visa Class B shares. Concurrent with these sales, the Company 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 288,714 Class B shares ( 475,887 Class A equivalents) that the Company owns are carried at a zero cost basis. The Company also contributed 13,800 Visa Class B restricted shares to the Bank of Hawaii Foundation during 2015. The contribution had no impact on noninterest expense; however, the contribution favorably impacted our effective tax rate in 2015.

Loans and Leases and the Allowa

Loans and Leases and the Allowance for Loan and Lease Losses	12 Months Ended
	Dec. 31, 2015
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 December 31, 2015 and 2014 : December 31, (dollars in thousands) 2015 2014 Commercial Commercial and Industrial $ 1,115,168 $ 1,055,243 Commercial Mortgage 1,677,147 1,437,513 Construction 156,660 109,183 Lease Financing 204,877 226,189 Total Commercial 3,153,852 2,828,128 Consumer Residential Mortgage 2,925,605 2,571,090 Home Equity 1,069,400 866,688 Automobile 381,735 323,848 Other 1 348,393 307,835 Total Consumer 4,725,133 4,069,461 Total Loans and Leases $ 7,878,985 $ 6,897,589 1 Comprised of other revolving credit, installment, and lease financing. Total loans and leases were reported net of unearned income of $47.3 million and $57.0 million as of December 31, 2015 and 2014 , respectively. Commercial loans and residential mortgage loans of $1.0 billion were pledged to secure an undrawn FRB line of credit as of December 31, 2015 and 2014 . As of December 31, 2015 and 2014 , residential mortgage loans of approximately $1.7 billion and $1.1 billion , respectively, were pledged under a blanket pledge arrangement to secure FHLB advances. See Note 10 (Other Debt) for FHLB advances outstanding as of December 31, 2015 and 2014 . Net gains related to sales of residential mortgage loans, recorded as a component of mortgage banking income, were $5.9 million , $2.4 million , and $8.7 million for the years ended December 31, 2015 , 2014 , and 2013 , respectively. Net gains on sales of commercial loans were not material for the years ended December 31, 2015 , 2014 , and 2013 . Substantially all of the Company's lending activity is with customers located in Hawaii. A substantial portion of the Company's real estate loans are secured by real estate in Hawaii. Allowance for Loan and Lease Losses The following presents by portfolio segment, the activity in the Allowance for the years ended December 31, 2015 , 2014 , and 2013 . 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 December 31, 2015 , 2014 , and 2013 . (dollars in thousands) Commercial Consumer Total For the Year Ended December 31, 2015 Allowance for Loan and Lease Losses: Balance at Beginning of Period $ 64,551 $ 44,137 $ 108,688 Loans and Leases Charged-Off (954 ) (15,485 ) (16,439 ) Recoveries on Loans and Leases Previously Charged-Off 2,173 7,458 9,631 Net Loans and Leases Recovered (Charged-Off) 1,219 (8,027 ) (6,808 ) Provision for Credit Losses (5,056 ) 6,056 1,000 Balance at End of Period $ 60,714 $ 42,166 $ 102,880 As of December 31, 2015 Allowance for Loan and Lease Losses: Individually Evaluated for Impairment $ 205 $ 3,373 $ 3,578 Collectively Evaluated for Impairment 60,509 38,793 99,302 Total $ 60,714 $ 42,166 $ 102,880 Recorded Investment in Loans and Leases: Individually Evaluated for Impairment $ 27,950 $ 38,747 $ 66,697 Collectively Evaluated for Impairment 3,125,902 4,686,386 7,812,288 Total $ 3,153,852 $ 4,725,133 $ 7,878,985 For the Year Ended December 31, 2014 Allowance for Loan and Lease Losses: Balance at Beginning of Period $ 71,446 $ 44,008 $ 115,454 Loans and Leases Charged-Off (2,068 ) (13,371 ) (15,439 ) Recoveries on Loans and Leases Previously Charged-Off 4,721 8,816 13,537 Net Loans and Leases Recovered (Charged-Off) 2,653 (4,555 ) (1,902 ) Provision for Credit Losses (9,548 ) 4,684 (4,864 ) Balance at End of Period $ 64,551 $ 44,137 $ 108,688 As of December 31, 2014 Allowance for Loan and Lease Losses: Individually Evaluated for Impairment $ 2,387 $ 3,561 $ 5,948 Collectively Evaluated for Impairment 62,164 40,576 102,740 Total $ 64,551 $ 44,137 $ 108,688 Recorded Investment in Loans and Leases: Individually Evaluated for Impairment $ 25,116 $ 39,631 $ 64,747 Collectively Evaluated for Impairment 2,803,012 4,029,830 6,832,842 Total $ 2,828,128 $ 4,069,461 $ 6,897,589 For the Year Ended December 31, 2013 Allowance for Loan and Lease Losses: Balance at Beginning of Period $ 72,704 $ 56,153 $ 128,857 Loans and Leases Charged-Off (8,099 ) (17,021 ) (25,120 ) Recoveries on Loans and Leases Previously Charged-Off 2,644 9,073 11,717 Net Loans and Leases Charged-Off (5,455 ) (7,948 ) (13,403 ) Provision for Credit Losses 4,197 (4,197 ) — Balance at End of Period $ 71,446 $ 44,008 $ 115,454 As of December 31, 2013 Allowance for Loan and Lease Losses: Individually Evaluated for Impairment $ 9,054 $ 3,722 $ 12,776 Collectively Evaluated for Impairment 62,392 40,286 102,678 Total $ 71,446 $ 44,008 $ 115,454 Recorded Investment in Loans and Leases: Individually Evaluated for Impairment $ 38,469 $ 38,646 $ 77,115 Collectively Evaluated for Impairment 2,489,964 3,528,308 6,018,272 Total $ 2,528,433 $ 3,566,954 $ 6,095,387 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 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 December 31, 2015 and 2014 . December 31, 2015 (dollars in thousands) Commercial Commercial Construction Lease Total Pass $ 1,059,475 $ 1,591,696 $ 154,976 $ 204,348 $ 3,010,495 Special Mention 28,076 43,674 80 76 71,906 Classified 27,617 41,777 1,604 453 71,451 Total $ 1,115,168 $ 1,677,147 $ 156,660 $ 204,877 $ 3,153,852 (dollars in thousands) Residential Home Automobile Other 1 Total Pass $ 2,910,667 $ 1,064,253 $ 381,420 $ 347,710 $ 4,704,050 Classified 14,938 5,147 315 683 21,083 Total $ 2,925,605 $ 1,069,400 $ 381,735 $ 348,393 $ 4,725,133 Total Recorded Investment in Loans and Leases $ 7,878,985 December 31, 2014 (dollars in thousands) Commercial Commercial Construction Lease Total Pass $ 1,001,474 $ 1,358,812 $ 107,381 $ 225,783 $ 2,693,450 Special Mention 17,364 45,082 — 17 62,463 Classified 36,405 33,619 1,802 389 72,215 Total $ 1,055,243 $ 1,437,513 $ 109,183 $ 226,189 $ 2,828,128 (dollars in thousands) Residential Home Automobile Other 1 Total Pass $ 2,556,140 $ 862,258 $ 323,232 $ 307,123 $ 4,048,753 Classified 14,950 4,430 616 712 20,708 Total $ 2,571,090 $ 866,688 $ 323,848 $ 307,835 $ 4,069,461 Total Recorded Investment in Loans and Leases $ 6,897,589 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 December 31, 2015 and 2014 . (dollars in thousands) 30 - 59 60 - 89 Past Due Non- Total Current Total Loans Non-Accrual 2 As of December 31, 2015 Commercial Commercial and Industrial $ 1,118 $ 359 $ — $ 5,829 $ 7,306 $ 1,107,862 $ 1,115,168 $ 452 Commercial Mortgage 1,245 27 — 3,469 4,741 1,672,406 1,677,147 2,890 Construction 2,120 — — — 2,120 154,540 156,660 — Lease Financing — — — — — 204,877 204,877 — Total Commercial 4,483 386 0 9,298 14,167 3,139,685 3,153,852 3,342 Consumer Residential Mortgage 7,148 3,993 4,453 14,598 30,192 2,895,413 2,925,605 2,056 Home Equity 3,856 1,906 1,710 4,081 11,553 1,057,847 1,069,400 1,710 Automobile 8,103 1,803 315 — 10,221 371,514 381,735 — Other 1 2,281 1,448 1,096 — 4,825 343,568 348,393 — Total Consumer 21,388 9,150 7,574 18,679 56,791 4,668,342 4,725,133 3,766 Total $ 25,871 $ 9,536 $ 7,574 $ 27,977 $ 70,958 $ 7,808,027 $ 7,878,985 $ 7,108 As of December 31, 2014 Commercial Commercial and Industrial $ 992 $ 356 $ 2 $ 9,088 $ 10,438 $ 1,044,805 $ 1,055,243 $ 7,819 Commercial Mortgage 458 — — 745 1,203 1,436,310 1,437,513 — Construction — — — — — 109,183 109,183 — Lease Financing — — — — — 226,189 226,189 — Total Commercial 1,450 356 2 9,833 11,641 2,816,487 2,828,128 7,819 Consumer Residential Mortgage 4,907 2,107 4,506 14,841 26,361 2,544,729 2,571,090 632 Home Equity 3,461 2,661 2,596 3,097 11,815 854,873 866,688 375 Automobile 7,862 1,483 616 — 9,961 313,887 323,848 — Other 1 2,416 1,049 941 — 4,406 303,429 307,835 — Total Consumer 18,646 7,300 8,659 17,938 52,543 4,016,918 4,069,461 1,007 Total $ 20,096 $ 7,656 $ 8,661 $ 27,771 $ 64,184 $ 6,833,405 $ 6,897,589 $ 8,826 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 December 31, 2015 and 2014 . (dollars in thousands) Recorded Unpaid Related December 31, 2015 Impaired Loans with No Related Allowance Recorded: Commercial Commercial and Industrial $ 14,650 $ 28,212 $ — Commercial Mortgage 10,407 13,907 — Construction 1,604 1,604 — Total Commercial 26,661 43,723 — Total Impaired Loans with No Related Allowance Recorded $ 26,661 $ 43,723 $ — Impaired Loans with an Allowance Recorded: Commercial Commercial and Industrial $ 1,289 $ 1,289 $ 205 Total Commercial 1,289 1,289 205 Consumer Residential Mortgage 28,981 34,694 3,171 Home Equity 1,089 1,089 12 Automobile 7,012 7,012 143 Other 1 1,665 1,665 47 Total Consumer 38,747 44,460 3,373 Total Impaired Loans with an Allowance Recorded $ 40,036 $ 45,749 $ 3,578 Impaired Loans: Commercial $ 27,950 $ 45,012 $ 205 Consumer 38,747 44,460 3,373 Total Impaired Loans $ 66,697 $ 89,472 $ 3,578 December 31, 2014 Impaired Loans with No Related Allowance Recorded: Commercial Commercial and Industrial $ 9,763 $ 15,013 $ — Commercial Mortgage 6,480 6,480 — Construction 1,689 1,689 — Total Commercial 17,932 23,182 — Total Impaired Loans with No Related Allowance Recorded $ 17,932 $ 23,182 $ — Impaired Loans with an Allowance Recorded: Commercial Commercial and Industrial $ 7,184 $ 13,784 $ 2,387 Total Commercial 7,184 13,784 2,387 Consumer Residential Mortgage 32,331 37,989 3,445 Home Equity 1,012 1,012 16 Automobile 5,375 5,375 66 Other 1 913 913 34 Total Consumer 39,631 45,289 3,561 Total Impaired Loans with an Allowance Recorded $ 46,815 $ 59,073 $ 5,948 Impaired Loans: Commercial $ 25,116 $ 36,966 $ 2,387 Consumer 39,631 45,289 3,561 Total Impaired Loans $ 64,747 $ 82,255 $ 5,948 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 years ended December 31, 2015 and 2014 . Year Ended Year Ended (dollars in thousands) Average Interest Average Interest Impaired Loans with No Related Allowance Recorded: Commercial Commercial and Industrial $ 12,589 $ 406 $ 11,167 $ 318 Commercial Mortgage 7,521 268 8,529 225 Construction 1,647 106 1,570 93 Total Commercial 21,757 780 21,266 636 Consumer Other 1 — — 6 — Total Consumer — — 6 — Total Impaired Loans with No Related Allowance Recorded $ 21,757 $ 780 $ 21,272 $ 636 Impaired Loans with an Allowance Recorded: Commercial Commercial and Industrial $ 5,379 $ 98 $ 8,045 $ 118 Total Commercial 5,379 98 8,045 118 Consumer Residential Mortgage 30,895 1,133 31,998 1,028 Home Equity 1,137 42 964 34 Automobile 5,992 432 5,263 433 Other 1 1,198 111 560 49 Total Consumer 39,222 1,718 38,785 1,544 Total Impaired Loans with an Allowance Recorded $ 44,601 $ 1,816 $ 46,830 $ 1,662 Impaired Loans: Commercial $ 27,136 $ 878 $ 29,311 $ 754 Consumer 39,222 1,718 38,791 1,544 Total Impaired Loans $ 66,358 $ 2,596 $ 68,102 $ 2,298 1 Comprised of other revolving credit and installment financing. For the year ended December 31, 2013 , the average recorded investment in impaired loans was $61.2 million and the interest income recognized on impaired loans was $1.8 million . For the years ended December 31, 2015 , 2014 , and 2013 , the amount of interest income recognized by the Company within the period that the loans were impaired were primarily related to loans modified in a troubled debt restructuring that were on accrual status. For the years ended December 31, 2015 , 2014 , and 2013 , the amount of interest income recognized using a cash-basis method of accounting during the time within that period 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 $65.0 million and $60.2 million as of December 31, 2015 and 2014 , respectively. There were no commitments to lend additional funds on loans modified in a TDR as of December 31, 2015 and 2014 . 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 is 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 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 commercial and consumer 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 years ended December 31, 2015 and 2014 . Loans Modified as a TDR for the Loans Modified as a TDR for the Troubled Debt Restructurings (dollars in thousands ) Number of Recorded 1 Increase in Number of Recorded 1 Increase in Commercial Commercial and Industrial 30 $ 5,414 $ 1 19 $ 10,263 $ 2,360 Commercial Mortgage 4 4,307 — 1 315 — Total Commercial 34 9,721 1 20 10,578 2,360 Consumer Residential Mortgage 13 4,255 99 17 6,329 278 Home Equity 3 367 4 2 156 2 Automobile 170 3,996 81 131 2,576 32 Other 2 168 1,099 31 84 666 25 Total Consumer 354 9,717 215 234 9,727 337 Total 388 $ 19,438 $ 216 254 $ 20,305 $ 2,697 1 The period end balances reflect all partial 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, loans modified in a TDR that defaulted during the year ended December 31, 2015 and 2014 , 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. Year Ended December 31, 2015 Year Ended December 31, 2014 TDRs that Defaulted During the Period, (dollars in thousands) Number of Recorded 1 Number of Recorded 1 Commercial Commercial and Industrial 2 $ 4,924 4 $ 728 Total Commercial 2 4,924 4 728 Consumer Residential Mortgage 4 1,449 2 506 Automobile 10 220 6 77 Other 2 21 118 6 48 Total Consumer 35 1,787 14 631 Total 37 $ 6,711 18 $ 1,359 1 The period end balances reflect all partial 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. 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 $8.5 million as of December 31, 2015 . Related Party Loans Certain directors and executive officers of the Company, companies in which they are principal owners, and trusts in which they are involved, have loans with the Bank. These loans were made in the ordinary course of business at normal credit terms, including interest rate and collateral requirements. As of December 31, 2015 and 2014 , related party loan balances were $16.7 million and $17.0 million , respectively.

Mortgage Servicing Rights

Mortgage Servicing Rights	12 Months Ended
	Dec. 31, 2015
Transfers and Servicing of Financial Assets [Abstract]
Mortgage Servicing Rights	Mortgage Servicing Rights The Company's portfolio of residential mortgage loans serviced for third parties was $2.7 billion as of December 31, 2015 , $2.9 billion as of December 31, 2014 , and $3.1 billion as of December 31, 2013 . 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 21 (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 $7.2 million , $7.9 million , and $8.0 million for the years ended December 31, 2015 , 2014 , and 2013 , respectively. 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 years ended December 31, 2015 , 2014 , and 2013 , the change in the fair value of the Company's mortgage servicing rights accounted for under the fair value measurement method was as follows: (dollars in thousands) 2015 2014 2013 Balance at Beginning of Year $ 2,604 $ 3,826 $ 4,761 Changes in Fair Value: Due to Change in Valuation Assumptions 1 (251 ) (869 ) 127 Due to Payoffs (383 ) (353 ) (1,062 ) Total Changes in Fair Value of Mortgage Servicing Rights (634 ) (1,222 ) (935 ) Balance at End of Year $ 1,970 $ 2,604 $ 3,826 1 Principally represents changes in discount rates and loan repayment rate assumptions, mostly due to changes in interest rates. For the years ended December 31, 2015 , 2014 , and 2013 , the change in the carrying value of the Company's mortgage servicing rights accounted for under the amortization method was as follows: (dollars in thousands) 2015 2014 2013 Balance at Beginning of Year $ 22,091 $ 24,297 $ 20,479 Servicing Rights that Resulted From Asset Transfers 1,737 747 6,351 Amortization (2,832 ) (2,896 ) (2,533 ) Valuation Allowance Provision 36 (57 ) — Balance at End of Year $ 21,032 $ 22,091 $ 24,297 Valuation Allowance: Balance at Beginning of Year $ (57 ) $ — $ — Valuation Allowance Provision 36 (57 ) — Balance at End of Year $ (21 ) $ (57 ) $ — Fair Value: Balance at Beginning of Year $ 22,837 $ 30,100 $ 23,143 Balance at End of Year $ 24,804 $ 22,837 $ 30,100 The key data and assumptions used in estimating the fair value of the Company's mortgage servicing rights as of December 31, 2015 and 2014 were as follows: December 31, 2015 2014 Weighted-Average Constant Prepayment Rate 1 9.10 % 11.62 % Weighted-Average Life (in years) 7.40 6.28 Weighted-Average Note Rate 4.23 % 4.28 % Weighted-Average Discount Rate 2 9.38 % 10.61 % 1 Represents annualized loan repayment rate assumption. 2 Derived from multiple interest rate scenarios that incorporate a spread to the London Interbank Offered Rate swap 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 December 31, 2015 and 2014 is presented in the following table. December 31, (dollars in thousands) 2015 2014 Constant Prepayment Rate Decrease in fair value from 25 basis points ("bps") adverse change $ (285 ) $ (265 ) Decrease in fair value from 50 bps adverse change (566 ) (524 ) Discount Rate Decrease in fair value from 25 bps adverse change (292 ) (250 ) Decrease in fair value from 50 bps adverse change (577 ) (495 ) 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.

Premises and Equipment

Premises and Equipment	12 Months Ended
	Dec. 31, 2015
Property, Plant and Equipment [Abstract]
Premises and Equipment	The components of the Company's premises and equipment as of December 31, 2015 and 2014 were as follows: (dollars in thousands) Cost Accumulated Net Book Value December 31, 2015 Premises $ 322,552 $ (238,912 ) $ 83,640 Equipment 111,071 (86,176 ) 24,895 Capital Leases 6,593 (3,929 ) 2,664 Total $ 440,216 $ (329,017 ) $ 111,199 December 31, 2014 Premises $ 322,536 $ (235,464 ) $ 87,072 Equipment 106,623 (86,577 ) 20,046 Capital Leases 6,593 (3,857 ) 2,736 Total $ 435,752 $ (325,898 ) $ 109,854 Depreciation and amortization (including capital lease amortization) included in noninterest expense was $12.8 million , $12.4 million , and $12.1 million for the years ended December 31, 2015 , 2014 , and 2013 , respectively. There was no impairment of the Company's premises and equipment for the years ended December 31, 2015 , 2014 and 2013 .

Other Assets

Other Assets	12 Months Ended
	Dec. 31, 2015
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Other Assets	The components of the Company's other assets as of December 31, 2015 and 2014 were as follows: December 31, (dollars in thousands) 2015 2014 Federal Home Loan Bank and Federal Reserve Bank Stock $ 38,836 $ 66,374 Derivative Financial Instruments 13,967 16,515 Low-Income Housing and Other Equity Investments 79,033 77,495 Deferred Compensation Plan Assets 20,262 18,794 Prepaid Expenses 8,262 7,787 Accounts Receivable 12,539 13,405 Other 26,493 25,518 Total $ 199,392 $ 225,888

Deposits

Deposits	12 Months Ended
	Dec. 31, 2015
Deposits [Abstract]
Deposits	Time Deposits As of December 31, 2015 and 2014 , the Company's total time deposits were $1.2 billion and $1.4 billion , respectively. As of December 31, 2015 , the contractual maturities of these time deposits were as follows: (dollars in thousands) Amount 2016 $ 933,273 2017 161,913 2018 34,467 2019 15,293 2020 17,667 Thereafter 15,038 Total $ 1,177,651 The amount of time deposits with balances of $100,000 or more was $0.9 billion and $1.2 billion as of December 31, 2015 and 2014 , respectively. As of December 31, 2015 , the contractual maturities of these time deposits were as follows: (dollars in thousands) Amount Three Months or Less $ 422,466 Over Three Months through Six Months 202,100 Over Six Months through Twelve Months 164,806 Over Twelve Months 139,767 Total $ 929,139 Public Deposits As of December 31, 2015 and 2014 , deposits of governmental entities of $1.2 billion and $1.3 billion , respectively, required collateralization by acceptable investment securities of the Company.

Borrowings

Borrowings	12 Months Ended
	Dec. 31, 2015
Borrowings Disclosure Abstract
Borrowings	Borrowings Details of the Company's short-term borrowings (original maturity of one year or less) as of December 31, 2015 and 2014 were as follows: December 31, (dollars in thousands) 2015 2014 Funds Purchased 1 Amounts Outstanding $ 7,333 $ 8,459 Weighted-Average Interest Rate 0.14 % 0.14 % Securities Sold Under Agreements to Repurchase (short-term) 2 Amounts Outstanding $ 3,992 $ 7,700 Weighted-Average Interest Rate 0.06 % 0.10 % 1 Federal funds purchased generally mature on the next business day following the date of purchase. 2 Consists entirely of repurchase agreements with government entities. Excludes long-term repurchase agreements with government entities of $49.9 million and $80.9 million as of December 31, 2015 , and 2014 , respectively, and long-term repurchase agreements with private institutions of $575.0 million and $600.0 million as of December 31, 2015 and 2014 , respectively. The Company's total securities sold under agreements to repurchase were $628.9 million and $688.6 million as of December 31, 2015 and 2014 , respectively. As of December 31, 2015 , all of our repurchase agreements were at fixed interest rates. As of December 31, 2015 , long-term repurchase agreements (original maturity over one year) placed with government entities were $49.9 million with a weighted-average interest rate of 0.37% . Remaining terms ranged from 2016 to 2017 with a weighted-average maturity of 56 days. As of December 31, 2015 , long-term repurchase agreements placed with private institutions were $575.0 million with a weighted-average interest rate of 4.22% . Remaining terms ranged from 2016 to 2022 with a weighted-average maturity of 3.6 years. Some of our repurchase agreements with private institutions may be terminated at earlier specified dates by the private institution or in some cases by either the private institution or the Company. If all such agreements were to terminate at the earliest possible date, the weighted-average maturity for our repurchase agreements with private institutions would decrease to 1.5 years.

Other Debt

Other Debt	12 Months Ended
	Dec. 31, 2015
Debt Disclosure [Abstract]
Other Debt	The Company's other debt as of December 31, 2015 and 2014 were as follows: December 31, (dollars in thousands) 2015 2014 Federal Home Loan Bank Advances $ 225,000 $ 150,000 Non-Recourse Debt 9,938 13,005 Capital Lease Obligations 10,848 10,907 Total $ 245,786 $ 173,912 As a member of the FHLB, the Bank may borrow funds from the FHLB in amounts up to 35% of the Bank's total assets, provided the Bank is able to pledge an adequate amount of qualified assets to secure the borrowings. As of December 31, 2015 , our eight FHLB advances totaled $225.0 million with a weighted-average interest rate of 1.15% and maturity dates ranging from 2016 to 2018. As of December 31, 2015 , the Company had a remaining line of credit with the FHLB of $1.1 billion . See Note 4 (Loans and Leases and the Allowance for Loan and Lease Losses) for loans pledged to the FHLB as of December 31, 2015 and 2014 . As of December 31, 2015 , the Company's non-recourse debt was bearing interest at a fixed rate of 6.3% with maturity in June 2021. Capital lease obligations relate to office space at the Company's headquarters. The lease began in 1993 and has a 60 year term. Lease payments are fixed at $0.8 million per year through December 2022 (one-time inflation adjustment on January 1, 2018) and are negotiable thereafter. As of December 31, 2015 , the Company had an undrawn line of credit with the FRB of $560.8 million . See Note 4 (Loans and Leases and the Allowance for Loan and Lease Losses) for loans pledged to the FRB as of December 31, 2015 and 2014 . As of December 31, 2015 , the annual maturities of the Company's other debt, exclusive of capital lease obligations, were expected to be as follows: (dollars in thousands) Amount 2016 $ 52,785 2017 — 2018 175,000 2019 — 2020 3,464 Thereafter 3,689 Total $ 234,938

Shareholders' Equity

Shareholders' Equity	12 Months Ended
	Dec. 31, 2015
Stockholders' Equity Note [Abstract]
Shareholders' Equity	Shareholders' Equity Regulatory Capital The table below sets forth the minimum required capital amounts and ratios for well capitalized institutions and the actual capital amounts and ratios for the Company and the Bank as of December 31, 2015 and 2014 : (dollars in thousands) Well Capitalized Company Bank As of December 31, 2015: Shareholders' Equity $ 1,116,260 $ 1,036,355 Common Equity Tier 1 Capital 1 1,112,598 1,043,070 Tier 1 Capital 1 1,112,598 1,043,070 Total Capital 1 1,212,245 1,142,573 Common Equity Tier 1 Capital Ratio 1 6.5 % 13.97 % 13.12 % Tier 1 Capital Ratio 1 8 % 13.97 % 13.12 % Total Capital Ratio 1 10 % 15.22 % 14.37 % Tier 1 Leverage Ratio 1 5 % 7.26 % 6.81 % As of December 31, 2014: Shareholders' Equity $ 1,055,086 $ 975,723 Tier 1 Capital 1,039,631 974,397 Total Capital 1,128,416 1,063,085 Tier 1 Capital Ratio 6 % 14.69 % 13.78 % Total Capital Ratio 10 % 15.94 % 15.04 % Tier 1 Leverage Ratio 5 % 7.13 % 6.69 % 1 Calculated under Basel III rules, which became effective January 1, 2015. The Company and the Bank are subject to various regulatory capital requirements administered by the federal banking agencies. Failure to meet minimum capital requirements can result in certain mandatory, and possibly additional discretionary actions by regulators that, if undertaken, could have a direct material effect on the Company's financial statements. Under capital adequacy guidelines and the regulatory framework for prompt corrective action, the Company and the Bank must meet specific capital guidelines that involve quantitative measures of assets, liabilities, and certain off-balance sheet items as calculated under regulatory accounting practices. The capital amounts and classifications are also subject to qualitative judgments by regulators about the components of regulatory capital, risk weightings, and other factors. Quantitative measures established by regulation to ensure capital adequacy require the Company and the Bank to maintain minimum amounts and ratios of Tier 1 and Total Capital. Both Common Equity Tier 1 Capital and Tier 1 Capital are common shareholders' equity, reduced by certain intangible assets, postretirement benefit liability adjustments, and unrealized gains and losses on investment securities. Total Capital is Tier 1 Capital plus an allowable amount of the reserve for credit losses. Risk-weighted assets are calculated by taking assets and credit equivalent amounts of off-balance-sheet items and assigning them to one of several broad risk categories. Four capital ratios are used to measure capital adequacy: Common Equity Tier 1 Capital divided by risk-weighted assets, as defined; Tier 1 Capital divided by risk-weighted assets; Total Capital divided by risk-weighted assets; and the Tier 1 Leverage ratio, which is Tier 1 Capital divided by quarterly adjusted average total assets. As of December 31, 2015 , the Company and the Bank were well capitalized as defined in the regulatory framework for prompt corrective action. There were no conditions or events since December 31, 2015 that management believes have changed the Company or the Bank's capital classifications. Dividends Dividends paid by the Parent are substantially funded from dividends received from the Bank. The Bank is subject to federal and state regulatory restrictions that limit cash dividends and loans to the Parent. These restrictions generally require advanced approval from the Bank's regulator for payment of dividends in excess of the sum of net income for the current calendar year and the retained net income of the prior two calendar years. Common Stock Repurchase Program The Parent has a common stock repurchase program in which shares repurchased are held in treasury stock for reissuance in connection with share-based compensation plans and for general corporate purposes. For the year ended December 31, 2015 , the Parent repurchased 802,255 shares of common stock under its share repurchase program at an average cost per share of $62.61 and a total cost of $50.2 million . From the beginning of the stock repurchase program in July 2001 through December 31, 2015 , the Parent repurchased a total of 52.8 million shares of common stock at an average cost of $37.35 per share and a total cost of $2.0 billion . From January 1, 2016 through February 17, 2016 , the Parent repurchased an additional 149,500 shares of common stock at an average cost of $59.50 per share for a total of $8.9 million . The actual amount and timing of future share repurchases, if any, will depend on market conditions, applicable SEC rules and various other factors. Accumulated Other Comprehensive Income The following table presents the components of other comprehensive income (loss), net of tax: (dollars in thousands) Before Tax Tax Effect Net of Tax Year Ended December 31, 2015 Net Unrealized Gains (Losses) on Investment Securities: Net Unrealized Gains (Losses) Arising During the Period $ (5,448 ) $ (2,138 ) $ (3,310 ) Amounts Reclassified from Accumulated Other Comprehensive Income (Loss) that (Increase) Decrease Net Income: (Gain) Loss on Sale (190 ) (75 ) (115 ) Amortization of Unrealized Holding (Gains) Losses on Held-to-Maturity Securities 1 2,136 836 1,300 Net Unrealized Gains (Losses) on Investment Securities (3,502 ) (1,377 ) (2,125 ) Defined Benefit Plans: Net Actuarial Gains (Losses) Arising During the Period 7,335 2,869 4,466 Amortization of Net Actuarial Losses (Gains) 1,624 641 983 Amortization of Prior Service Credit (322 ) (127 ) (195 ) Defined Benefit Plans, Net 8,637 3,383 5,254 Other Comprehensive Income (Loss) $ 5,135 $ 2,006 $ 3,129 Year Ended December 31, 2014 Net Unrealized Gains (Losses) on Investment Securities: Net Unrealized Gains (Losses) Arising During the Period $ 28,609 $ 11,286 $ 17,323 Amounts Reclassified from Accumulated Other Comprehensive Income (Loss) that (Increase) Decrease Net Income: (Gain) Loss on Sale (64 ) (25 ) (39 ) Amortization of Unrealized Holding (Gains) Losses on Held-to-Maturity Securities 1 (703 ) (277 ) (426 ) Net Unrealized Gains (Losses) on Investment Securities 27,842 10,984 16,858 Defined Benefit Plans: Net Actuarial Gains (Losses) Arising During the Period (20,286 ) (8,000 ) (12,286 ) Amortization of Net Actuarial Losses (Gains) 1,256 496 760 Amortization of Prior Service Credit (322 ) (127 ) (195 ) Defined Benefit Plans, Net (19,352 ) (7,631 ) (11,721 ) Other Comprehensive Income (Loss) $ 8,490 $ 3,353 $ 5,137 Year Ended December 31, 2013 Net Unrealized Gains (Losses) on Investment Securities: Net Unrealized Gains (Losses) Arising During the Period $ (105,842 ) $ (41,715 ) $ (64,127 ) 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 (8,386 ) (3,307 ) (5,079 ) Net Unrealized Gains (Losses) on Investment Securities (114,228 ) (45,022 ) (69,206 ) Defined Benefit Plans: Net Actuarial Gains (Losses) Arising During the Period 12,132 4,785 7,347 Amortization of Net Actuarial Losses (Gains) 1,688 665 1,023 Amortization of Prior Service Credit (322 ) (127 ) (195 ) Defined Benefit Plans, Net 13,498 5,323 8,175 Other Comprehensive Income (Loss) $ (100,730 ) $ (39,699 ) $ (61,031 ) 1 The amount relates to the amortization/accretion of unrealized 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: (dollars in thousands) Investment Securities-Available-For-Sale Investment Securities-Held-To-Maturities Defined Benefit Plans Accumulated Other Comprehensive Income (Loss) Year Ended December 31, 2015 Balance at Beginning of Period $ 15,984 $ (8,555 ) $ (34,115 ) $ (26,686 ) Other Comprehensive Income (Loss) Before Reclassifications (3,310 ) — 4,466 1,156 Amounts Reclassified from Accumulated Other Comprehensive Income (Loss) (115 ) 1,300 788 1,973 Total Other Comprehensive Income (Loss) (3,425 ) 1,300 5,254 3,129 Balance at End of Period $ 12,559 $ (7,255 ) $ (28,861 ) $ (23,557 ) Year Ended December 31, 2014 Balance at Beginning Period $ (1,300 ) $ (8,129 ) $ (22,394 ) $ (31,823 ) Other Comprehensive Income (Loss) Before Reclassifications 17,323 — (12,286 ) 5,037 Amounts Reclassified from Accumulated Other Comprehensive Income (Loss) (39 ) (426 ) 565 100 Total Other Comprehensive Income (Loss) 17,284 (426 ) (11,721 ) 5,137 Balance at End of Period $ 15,984 $ (8,555 ) $ (34,115 ) $ (26,686 ) Year Ended December 31, 2013 Balance at Beginning Period $ 45,996 $ 13,781 $ (30,569 ) $ 29,208 Other Comprehensive Income (Loss) Before Reclassifications (47,296 ) (16,831 ) 7,347 (56,780 ) Amounts Reclassified from Accumulated Other Comprehensive Income (Loss) — (5,079 ) 828 (4,251 ) Total Other Comprehensive Income (Loss) (47,296 ) (21,910 ) 8,175 (61,031 ) Balance at End of Period $ (1,300 ) $ (8,129 ) $ (22,394 ) $ (31,823 ) The following table presents the amounts reclassified out of each component of accumulated other comprehensive income (loss): 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 (dollars in thousands) Year Ended December 31, 2015 2014 2013 Amortization of Unrealized Holding Gains (Losses) on Investment Securities Held-to-Maturity $ (2,136 ) $ 703 $ 8,386 Interest Income 836 (277 ) (3,307 ) Provision for Income Tax (1,300 ) 426 5,079 Net of Tax Sales of Investment Securities Available-for-Sale 190 64 — Investment Securities Gains (Losses), Net (75 ) (25 ) — Provision for Income Tax 115 39 — Net of Tax Amortization of Defined Benefit Plans Items Prior Service Credit 2 322 322 322 Net Actuarial Losses 2 (1,624 ) (1,256 ) (1,688 ) (1,302 ) (934 ) (1,366 ) Total Before Tax 514 369 538 Provision for Income Tax (788 ) (565 ) (828 ) Net of Tax Total Reclassifications for the Period $ (1,973 ) $ (100 ) $ 4,251 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 14 (Employee Benefits) for additional details.

Earnings Per Share

Earnings Per Share	12 Months Ended
	Dec. 31, 2015
Earnings Per Share [Abstract]
Earnings Per Share	Earnings Per Share There were no adjustments to net income, the numerator, for purposes of computing basic 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 years ended December 31, 2015 , 2014 , and 2013 : Weighted Average Shares 2015 2014 2013 Denominator for Basic Earnings Per Share 43,217,818 43,899,208 44,380,948 Dilutive Effect of Equity Based Awards 237,059 226,248 191,777 Denominator for Diluted Earnings Per Share 43,454,877 44,125,456 44,572,725 Antidilutive Stock Options and Restricted Stock Outstanding — — 25,101

Business Segments

Business Segments	12 Months Ended
	Dec. 31, 2015
Segment Reporting [Abstract]
Business Segments	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 similar information for 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 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 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 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 retail insurance products. Products and services from Retail Banking are delivered to customers through 70 branch locations and 456 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 are offered to middle-market and large companies in Hawaii and the Pacific Islands. 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 group assists 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, government deposits, 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 years ended December 31, 2015 , 2014 , and 2013 were as follows: (dollars in thousands) Retail Commercial Investment Treasury Consolidated Year Ended December 31, 2015 Net Interest Income $ 202,259 $ 143,944 $ 18,494 $ 29,390 $ 394,087 Provision for Credit Losses 8,033 (1,165 ) (43 ) (5,825 ) 1,000 Net Interest Income After Provision for Credit Losses 194,226 145,109 18,537 35,215 393,087 Noninterest Income 82,391 21,804 58,835 23,189 186,219 Noninterest Expense (199,572 ) (76,891 ) (57,852 ) (13,789 ) (348,104 ) Income Before Provision for Income Taxes 77,045 90,022 19,520 44,615 231,202 Provision for Income Taxes (27,330 ) (31,457 ) (7,222 ) (4,489 ) (70,498 ) Net Income $ 49,715 $ 58,565 $ 12,298 $ 40,126 $ 160,704 Total Assets as of December 31, 2015 $ 4,680,888 $ 3,099,132 $ 274,469 $ 7,400,527 $ 15,455,016 Year Ended December 31, 2014 Net Interest Income $ 178,480 $ 119,655 $ 15,238 $ 66,283 $ 379,656 Provision for Credit Losses 4,783 (2,369 ) (313 ) (6,965 ) (4,864 ) Net Interest Income After Provision for Credit Losses 173,697 122,024 15,551 73,248 384,520 Noninterest Income 79,562 23,635 57,618 19,202 180,017 Noninterest Expense (196,254 ) (66,760 ) (54,571 ) (9,314 ) (326,899 ) Income Before Provision for Income Taxes 57,005 78,899 18,598 83,136 237,638 Provision for Income Taxes (21,079 ) (26,952 ) (6,894 ) (19,671 ) (74,596 ) Net Income $ 35,926 $ 51,947 $ 11,704 $ 63,465 $ 163,042 Total Assets as of December 31, 2014 $ 4,088,878 $ 2,787,537 $ 202,645 $ 7,708,148 $ 14,787,208 Year Ended December 31, 2013 Net Interest Income $ 160,869 $ 99,733 $ 14,199 $ 84,106 $ 358,907 Provision for Credit Losses 8,565 4,918 (71 ) (13,412 ) — Net Interest Income After Provision for Credit Losses 152,304 94,815 14,270 97,518 358,907 Noninterest Income 87,493 27,488 59,336 11,906 186,223 Noninterest Expense (199,222 ) (65,189 ) (55,002 ) (11,556 ) (330,969 ) Income Before Provision for Income Taxes 40,575 57,114 18,604 97,868 214,161 Provision for Income Taxes (15,496 ) (18,877 ) (6,883 ) (22,403 ) (63,659 ) Net Income $ 25,079 $ 38,237 $ 11,721 $ 75,465 $ 150,502 Total Assets as of December 31, 2013 $ 3,627,700 $ 2,458,001 $ 189,421 $ 7,809,158 $ 14,084,280

Employee Benefits

Employee Benefits	12 Months Ended
	Dec. 31, 2015
Compensation and Retirement Disclosure [Abstract]
Employee Benefits	Employee Benefits The Company has defined contribution plans, defined benefit plans, and a postretirement benefit plan. Defined Contribution Plans The Bank of Hawaii Retirement Savings Plan (the "Savings Plan") has three Company contribution components in addition to employee contributions: 1) 401(k) matching, as described below; 2) a 3% fixed amount based on eligible compensation; and 3) a discretionary value-sharing contribution. Under the 401(k) matching component, participating employees may contribute up to 50% of their eligible compensation (within federal limits) to the Savings Plan. The Company makes matching contributions on behalf of participants equal to $1.25 for each $1.00 contributed by participants, up to 2% of the participants' eligible compensation, and $0.50 for every $1.00 contributed by participants over 2% , up to 5% of the participants' eligible compensation. A 3% fixed contribution and a discretionary value-sharing contribution, that is linked to the Company's financial goals, are made regardless of whether the participating employee contributes to the Savings Plan and are invested in accordance with the participant's selection of investment options available under the Savings Plan. The Company also has a non-qualified savings plan which covers certain employees with compensation exceeding Internal Revenue Service ("IRS") limits on pay amounts in the allocation of the Savings Plan's benefits. Total expense for all components of the Company's defined contribution plans was $12.0 million , $12.1 million , and $11.2 million for the years ended December 31, 2015 , 2014 , and 2013 , respectively. Defined Benefit Plans The Company has two defined benefit plans (the "Pension Plans"). In 1995, the Company froze its non-contributory, qualified defined benefit retirement plan (the "Retirement Plan") and the excess retirement plan (the "Excess Plan"), which covered employees of the Company and participating subsidiaries who met certain eligibility requirements. Beginning January 1, 2001, the Pension Plans no longer provided for compensation increases in the determination of benefits. The projected benefit obligation is equal to the accumulated benefit obligation due to the frozen status of the Pension Plans. The assets of the Retirement Plan primarily consist of equity and fixed income mutual funds. The Excess Plan is a non-qualified excess retirement benefit plan which covers certain employees of the Company and participating subsidiaries with compensation exceeding IRS limits on pay amounts applicable to the Pension Plan's benefit formula. The Excess Plan has no plan assets. The Excess Plan's projected benefit obligation and accumulated benefit obligation were $4.1 million and $4.8 million as of December 31, 2015 and 2014 , respectively. Postretirement Benefit Plan The Company's postretirement benefit plan provides retirees hired before January 1, 2012 with medical and dental insurance coverage. For eligible participants that retired before 2008 and met certain age requirements, the Company and retiree share in the cost of providing postretirement benefits where both the employer and retirees pay a portion of the insurance premiums. Eligible participants who retired before 2008 who did not meet certain age requirements continued on the Company's benefit plans, but pay for their full insurance premiums. Participants who retired on or after January 1, 2008, who have medical or dental coverage under the Company's plans immediately before retirement and meet certain age and years of service requirements as of December 31, 2008 are also eligible to participate in the Company's benefit plans, but must pay for their full insurance premiums. Retirees age 65 and older are provided with a Medicare supplemental plan subsidy. Most employees of the Company who have met certain eligibility requirements are covered by this plan. Participants who retired on or after January 1, 2008 who met certain age and/or years of service requirements are eligible for the Health Reimbursement Account ("HRA") program. The HRA program provides retirees with an initial credit based on years of service. Thereafter, an annual credit up to a maximum of $1,200 is provided into the HRA. The retiree may use the HRA for medical, vision, prescription drug and dental premiums, co-payments, and medically necessary health care expenses that are not covered by any medical or dental insurance program or flexible health spending account. As of December 31, 2015 and 2014 , the Company had no segregated assets to provide for postretirement benefits. The following table provides a reconciliation of changes in benefit obligation and fair value of plan assets, as well as the funded status recognized in the Company's consolidated statements of condition for the Pension Plans and postretirement benefit plan for the years ended December 31, 2015 and 2014 . Pension Benefits Postretirement Benefits (dollars in thousands) 2015 2014 2015 2014 Benefit Obligation at Beginning of Year $ 114,707 $ 98,085 $ 30,804 $ 27,296 Service Cost — — 621 586 Interest Cost 4,655 4,975 1,155 1,325 Actuarial Losses (Gains) (7,647 ) 16,954 (5,783 ) 2,674 Employer Benefits Paid 1 (5,722 ) (5,307 ) (1,490 ) (1,077 ) Benefit Obligation at End of Year $ 105,993 $ 114,707 $ 25,307 $ 30,804 Fair Value of Plan Assets at Beginning of Year $ 90,154 $ 90,535 $ — $ — Actual Return on Plan Assets (1,058 ) 4,442 — — Employer Contributions 484 484 1,490 1,077 Employer Benefits Paid 1 (5,722 ) (5,307 ) (1,490 ) (1,077 ) Fair Value of Plan Assets at End of Year $ 83,858 $ 90,154 $ — $ — Funded Status at End of Year 2 $ (22,135 ) $ (24,553 ) $ (25,307 ) $ (30,804 ) 1 Participants' contributions relative to the postretirement benefit plan were offset against employer benefits paid in the table above. Participants' contributions for postretirement benefits were $0.6 million and $0.7 million for the years ended December 31, 2015 and 2014 , respectively. 2 Amounts are recognized in Retirement Benefits Payable in the consolidated statements of condition. The following presents the amounts recognized in the Company's accumulated other comprehensive income for the Pension Plans and postretirement benefit plan as of December 31, 2015 and 2014 . Pension Benefits Postretirement Benefits (dollars in thousands) 2015 2014 2015 2014 Amounts Recognized in Accumulated Other Net Actuarial Gains (Losses) $ (33,239 ) $ (35,254 ) $ 3,768 $ 333 Net Prior Service Credit — — 610 806 Total Amounts Recognized in Accumulated Other $ (33,239 ) $ (35,254 ) $ 4,378 $ 1,139 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 years ended December 31, 2015 , 2014 , and 2013 . Pension Benefits Postretirement Benefits (dollars in thousands) 2015 2014 2013 2015 2014 2013 Service Cost $ — $ — $ — $ 621 $ 586 $ 670 Interest Cost 4,655 4,975 4,514 1,155 1,325 1,188 Expected Return on Plan Assets (5,222 ) (5,100 ) (5,250 ) — — — Amortization of: Prior Service Credit 1 — — — (322 ) (322 ) (322 ) Net Actuarial Losses (Gains) 1 1,713 1,408 1,688 (89 ) (152 ) — Net Periodic Benefit Cost $ 1,146 $ 1,283 $ 952 $ 1,365 $ 1,437 $ 1,536 1 Represents reclassification adjustments from accumulated other comprehensive income during the period. The estimated net actuarial loss related to the Company's Pension Plans that is expected to be amortized from accumulated other comprehensive income into net periodic benefit cost for the year ending December 31, 2016 is approximately $1.6 million . The estimated net actuarial gain and prior service credit related to the Company's postretirement benefit plan that is expected to be amortized from accumulated other comprehensive income into net periodic benefit cost for the year ending December 31, 2016 is approximately $0.6 million . Assumptions used to determine the benefit obligations as of December 31, 2015 and 2014 for the Company's Pension Plans and postretirement benefit plan were as follows: Pension Benefits Postretirement Benefits 2015 2014 2015 2014 Weighted Average Assumptions as of December 31: Discount Rate 4.70 % 4.25 % 4.74 % 4.28 % Health Care Cost Trend Rate Assumed For Next Year — — 6.70 % 7.00 % The health care cost trend rate is assumed to decrease annually, until reaching the ultimate trend rate of 4.5% in 2027 . Assumptions used to determine the net periodic benefit cost for the Company's Pension Plans and postretirement benefit plan for the years ended December 31, 2015 , 2014 , and 2013 were as follows: Pension Benefits Postretirement Benefits 2015 2014 2013 2015 2014 2013 Weighted Average Assumptions as of December 31: Discount Rate 4.25 % 5.22 % 4.29 % 4.28 % 5.22 % 4.29 % Expected Long-Term Rate of Return on Plan Assets 6.00 % 6.00 % 6.00 % — — — Health Care Cost Trend Rate — — — 7.00 % 7.20 % 7.70 % A combination of factors is used by management in determining the expected long-term rate of return on plan assets. Historical return experience for major asset categories are evaluated and current market factors, such as inflation and interest rates, are considered in determining the expected long-term rate of return assumption. A one percent change in the health care cost trend rate assumption (with all other assumptions remaining constant) would have impacted the service and interest cost components of the net periodic postretirement benefit cost and the postretirement benefit obligation as of and for the year ended December 31, 2015 as follows: (dollars in thousands) One Percent One Percent Effect on the Total of Service and Interest Cost Component of $ 147 $ (152 ) Effect on the Postretirement Benefit Obligation 2,004 (1,756 ) The Company expects to contribute $0.5 million to the Pension Plans and $1.0 million to the postretirement benefit plan for the year ending December 31, 2016 . As of December 31, 2015 , expected benefits to be paid in each of the next five years and in the aggregate for the five years thereafter were as follows: (dollars in thousands) Pension Benefits Postretirement Benefits 2016 $ 6,139 $ 1,001 2017 6,345 1,004 2018 6,494 988 2019 6,752 1,016 2020 6,918 1,081 Years 2021-2025 35,744 6,992 Retirement Plan Assets The Company's overall investment strategy is to maintain the purchasing power of the current assets and all future contributions by producing positive rates of return on plan assets; achieve capital growth towards the attainment of full funding of the Retirement Plan's termination liability; maximize returns within reasonable and prudent levels of risk; and control costs of administering the plan and managing the investments. The long-term investment objective is to achieve an overall annualized total return, gross of fees, above the blended benchmark index comprised of 35% S&P 500 Index, 25% MSCI ACWI ex-US Index, and 40% Barclays Capital Aggregate Bond Index. Subject to liquidity requirements, the asset allocation targets are 60% for equity securities, 40% for fixed income securities with a 10% to 20% range permitted from the strategic targets, and zero to 20% for cash. Within the equity securities portfolio, the range for domestic securities is from 50% to 100% and the range for international securities is from 0% to 50% . All assets selected for the Retirement Plan must have a readily ascertainable market value and must be readily marketable. Due to market fluctuations or cash flows, the allocation for each asset class may be breached by as much as 5% on a temporary basis. However, asset allocations are expected to conform to target ranges within 90 days of such an occurrence. The fair values of the Retirement Plan assets as of December 31, 2015 and 2014 by asset category were as follows: Fair Value Measurements Asset Category (dollars in thousands) Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Other Unobservable Inputs (Level 3) Total as of Dec. 31, 2015 Total as of Dec. 31, 2014 Cash $ 1,313 $ — $ — $ 1,313 $ 1,385 Equity Securities – Mutual Funds: Mixed-Cap 30,949 — — 30,949 33,648 International 17,917 — — 17,917 18,882 Emerging Market 1,982 — — 1,982 2,053 Fixed Income Securities – Mutual Funds 31,697 — — 31,697 34,186 Total $ 83,858 $ — $ — $ 83,858 $ 90,154 Quoted prices for these investments were available in active markets, and therefore were classified as Level 1 measurements in the fair value hierarchy.

Share-Based Compensation

Share-Based Compensation	12 Months Ended
	Dec. 31, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Share-Based Compensation	Share-Based Compensation The Company has share-based compensation plans which allow grants of stock options, restricted stock, stock appreciation rights, and restricted stock units to its employees and non-employee directors. The Company's employee stock option plans are shareholder approved and administered by the Human Resources and Compensation Committee of the Board of Directors. Stock options provide grantees the option to purchase shares of the Parent's common stock at a specified exercise price and, generally, expire 10 years from the date of grant. Stock option grants include incentive and non-qualified stock options whose vesting may be subject to one or more criteria, including employment or achievement of Company performance measures. Stock option exercise prices were equal to the quoted market price of the Parent's common stock on the date of grant. Restricted stock provides grantees with rights to shares of common stock upon completion of one or more criteria, including service period, performance or other conditions as established by the Compensation Committee, such as vesting tied to the Company's financial performances relative to the peer group or achievement of an absolute financial performance target. During the restriction period, all shares are considered outstanding and dividends are paid on the restricted stock. Generally, restricted stock vests over periods ranging from one to five years from the date of grant. Restricted stock and dividends may be forfeited if an employee terminates prior to vesting. As of December 31, 2015 , total shares authorized under the plans were 1.3 million shares, of which 1.1 million shares were available for future grants. The Company recognizes compensation expense, measured as the fair value of the share-based award on the date of grant, on a straight-line basis over the requisite service period. Share-based compensation is recorded in the statements of income as a component of salaries and benefits for employees and as a component of other noninterest expense for non-employee directors, with a corresponding increase to capital surplus in shareholders' equity. For the years ended December 31, 2015 , 2014 , and 2013 , compensation expense and the related income tax benefit recognized for stock options and restricted stock were as follows: (dollars in thousands) 2015 2014 2013 Compensation Expense $ 7,689 $ 7,870 $ 5,546 Income Tax Benefit 3,036 3,104 2,188 Restricted Stock As of December 31, 2015 , unrecognized compensation expense related to unvested restricted stock was $8.3 million . The unrecognized compensation expense is expected to be recognized over a weighted average period of 1.83 years. The following table presents the activity for restricted stock: Number of Shares Weighted Average Grant Date Fair Value Unvested as of December 31, 2012 211,526 $ 47.91 Granted 170,991 47.69 Vested (133,245 ) 48.39 $ 6,448 Forfeited (9,497 ) 47.54 Unvested as of December 31, 2013 239,775 $ 47.50 Granted 155,447 58.45 Vested (130,238 ) 47.32 $ 6,163 Forfeited (1,538 ) 51.19 Unvested as of December 31, 2014 263,446 $ 53.04 Granted 116,331 57.31 Vested (108,949 ) 52.47 $ 5,759 Forfeited (2,015 ) 54.17 Unvested as of December 31, 2015 1 268,813 $ 55.92 1 As of December 31, 2015, 26,281 shares were unvested from service-based grants. Restricted Stock Units During 2015 and 2014, the Company granted RSUs payable solely in cash. The RSUs vest over periods ranging from three to four years from the date of grant and are subject to forfeiture until performance and employment targets are achieved. Upon vesting, the RSUs are converted to cash based on the closing stock price on the vesting date. Total recognized compensation expense related to the RSUs was $3.3 million and $1.6 million for the years ended December 31, 2015 and 2014 , respectively. The following table presents the activity for RSU: Number of Units Weighted Average Fair Value of Restricted Balance as of December 31, 2013 — $ — Granted 105,405 55.17 Balance as of December 31, 2014 105,405 $ 55.17 Granted 61,751 56.68 Vested (31,651 ) 55.17 $ 1,940 Balance as of December 31, 2015 135,505 $ 55.86 Stock Options There were no stock options granted for the years ended December 31, 2015 and 2014 . All stock options granted were fully vested as of December 31, 2014 . The Company reissues treasury stock to satisfy stock option exercises. The following table presents the activity related to stock options under all plans for the year ended December 31, 2015 : Stock Weighted Weighted Aggregate Stock Options Outstanding as of January 1, 2015 755,343 $ 46.29 Exercised (197,927 ) 49.03 Forfeited (2,057 ) 47.35 Stock Options Outstanding as of December 31, 2015 555,359 45.31 5.8 $ 9,770 Stock Options Vested and Exercisable as of December 31, 2015 555,359 45.31 5.8 9,770 The following summarizes certain stock option activity of the Company for the years ended December 31, 2015 , 2014 , and 2013 : (dollars in thousands) 2015 2014 2013 Intrinsic Value of Stock Options Exercised $ 2,754 $ 1,209 $ 3,262 Cash Received from Stock Options Exercised 9,704 4,083 8,369 Tax Benefits Realized from Stock Options Exercised 330 34 690 Total Fair Value of Stock Options that Vested — — 3,731

Income Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2015
Income Tax Disclosure [Abstract]
Income Taxes	Provision for Income Taxes The components of the Company's provision for income taxes for the years ended December 31, 2015 , 2014 , and 2013 were as follows: (dollars in thousands) 2015 2014 2013 Current: Federal $ 73,278 $ 76,789 $ 63,731 State 3,737 3,018 (575 ) Total Current 77,015 79,807 63,156 Deferred: Federal (6,801 ) (5,603 ) (231 ) State 284 392 734 Total Deferred (6,517 ) (5,211 ) 503 Provision for Income Taxes $ 70,498 $ 74,596 $ 63,659 The tax effects of fair value adjustments on available-for-sale investment securities, the amortization of gains related to held-to-maturity investment securities, the minimum pension liability adjustment, and tax benefits related to stock options are recorded directly to consolidated shareholders' equity. The net tax charge recorded directly to consolidated shareholders' equity was $1.0 million and $2.7 million for the years ended December 31, 2015 and 2014 , respectively. The net tax benefit recorded directly to consolidated shareholders' equity was $40.6 million for the year ended December 31, 2013 . Deferred Tax Liabilities and Assets As of December 31, 2015 and 2014 , significant components of the Company's deferred tax liabilities and assets were as follows: December 31, (dollars in thousands) 2015 2014 Deferred Tax Liabilities: Accrued Pension Cost $ (13,707 ) $ (14,014 ) Federal Home Loan Bank Stock (5,088 ) (6,658 ) Lease Transactions (85,874 ) (97,864 ) Energy Tax Credits (8,054 ) (5,716 ) Net Unrealized Gains on Investments Securities (3,453 ) (4,830 ) Deferred Loan Fees (7,744 ) (5,982 ) Originated Mortgage Servicing Rights (9,104 ) (9,777 ) Other (657 ) (599 ) Gross Deferred Tax Liabilities (133,681 ) (145,440 ) Deferred Tax Assets: Accelerated Depreciation 7,775 9,419 Allowance for Loan Losses 42,890 44,877 Minimum Pension Liability 18,831 22,214 Accrued Expenses 16,738 15,622 Postretirement Benefit Obligations 12,849 12,884 Capital Lease Expenses 3,231 3,222 Restricted Stock 6,262 5,288 Investment in Unincorporated Entities 1,951 3,084 Deductible State and Local Taxes 4,166 5,598 Other 7,225 6,898 Gross Deferred Tax Assets Before Valuation Allowance 121,918 129,106 Valuation Allowance (3,932 ) (4,656 ) Gross Deferred Tax Assets After Valuation Allowance 117,986 124,450 Net Deferred Tax Liabilities $ (15,695 ) $ (20,990 ) Both positive and negative evidence was considered by management in determining the need for a valuation allowance. Negative evidence included the uncertainty regarding the generation of capital gains in future years and restrictions on the ability to sell low-income housing investments during periods when carrybacks of capital losses are allowed. Positive evidence included capital gains in the current year and carryback years. After considering all available evidence, management determined that a valuation allowance to offset deferred tax assets related to low-income housing investments that can only be used to offset capital gains was appropriate. Management determined that a valuation allowance was not required for the remaining deferred tax assets because it is more likely than not these assets will be realized through future reversals of existing taxable temporary differences, future taxable income exclusive of reversing temporary differences, and taxable income in prior carryback years. Certain events covered by Internal Revenue Code Section 593(e) will trigger a recapture of base year reserves of acquired thrift institutions. The base year reserves of acquired thrift institutions would be recaptured if an entity ceases to qualify as a bank for federal income tax purposes. The base year reserves of thrift institutions also remain subject to income tax penalty provisions that, in general, require recapture upon certain stock redemptions of, and excess distributions to, shareholders. As of December 31, 2015 , retained earnings included $18.2 million of base year reserves for which the deferred federal income tax liability of $7.2 million has not been recognized. Effective Tax Rate The following is a reconciliation of the statutory federal income tax rate to the Company's effective tax rate for the years ended December 31, 2015 , 2014 , and 2013 : 2015 2014 2013 Statutory Federal Income Tax Rate 35.00 % 35.00 % 35.00 % Increase (Decrease) in Income Tax Rate Resulting From: State Taxes, Net of Federal Income Tax 1.23 0.59 0.11 Tax Reserve Adjustments 0.38 0.88 (0.44 ) Leveraged Leases 0.06 0.01 0.02 Low-Income Housing Investments (0.78 ) (0.10 ) (0.51 ) Investment Tax Credits (0.89 ) (0.68 ) (0.80 ) Bank-Owned Life Insurance (1.06 ) (0.97 ) (0.96 ) Tax-Exempt Income (3.03 ) (2.83 ) (2.78 ) Other (0.42 ) (0.51 ) 0.09 Effective Tax Rate 30.49 % 31.39 % 29.73 % Unrecognized Tax Benefits The Company is required to record a liability, referred to as an unrecognized tax benefit ("UTB"), for the entire amount of benefit taken in a prior or future income tax return when the Company determines that a tax position has a less than 50% likelihood of being accepted by the taxing authority. The following presents a reconciliation of the Company's liability for UTBs for the years ended December 31, 2015 , 2014 , and 2013 : (dollars in thousands) 2015 2014 2013 Unrecognized Tax Benefits at Beginning of Year $ 12,229 $ 11,846 $ 15,433 Gross Increases, Related to Tax Positions Taken in a Prior Period 398 1,074 1,587 Gross Decreases, Related to Tax Positions Taken in a Prior Period (98 ) (314 ) (194 ) Gross Increases, Related to Current Period Tax Positions 573 498 1,557 Lapse of Statute of Limitations (1,500 ) (875 ) (6,537 ) Unrecognized Tax Benefits at End of Year $ 11,602 $ 12,229 $ 11,846 As of December 31, 2015 and 2014 , $10.8 million and $11.3 million , respectively, in liabilities for UTBs was related to UTBs that if reversed would have an impact on the Company's effective tax rate. Management believes that it is reasonably possible that the Company's liability for UTBs could significantly decrease as a result of the expiration of statutes of limitations and potential settlements with taxing authorities within the next 12 months. However, management is currently not able to estimate a range of possible change in the amount of the liability for UTBs recorded as of December 31, 2015 . The Company classifies interest and penalties, if any, related to the liability for UTBs as a component of the provision for income taxes. For the years ended December 31, 2015 , 2014 , and 2013 , the Company recorded a net tax provision of less than $0.1 million , net tax provision of $0.2 million , and a net tax benefit of $1.2 million , respectively, for interest and penalties. As of December 31, 2015 and 2014 , the Company had accrued $2.2 million for the payment of possible interest and penalties. During the year ended December 31, 2015 , the Company filed a protest with the IRS related to its 2011 tax return. It is currently awaiting an appeals hearing. The federal tax returns for 2012 through 2014 remain subject to examination. The Company's State of Hawaii income tax returns for 2012 through 2014 remain subject to examination by the taxing authorities.

Derivative Financial Instrument

Derivative Financial Instruments	12 Months Ended
	Dec. 31, 2015
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Financial Instruments	Derivative Financial Instruments The notional amount and fair value of the Company's derivative financial instruments as of December 31, 2015 and 2014 were as follows: December 31, 2015 December 31, 2014 (dollars in thousands) Notional Amount Fair Value Notional Amount Fair Value Interest Rate Lock Commitments $ 4,375 $ 270 $ 2,354 $ 152 Forward Commitments 5,862 4 5,404 (13 ) Interest Rate Swap Agreements Receive Fixed/Pay Variable Swaps 203,667 13,021 183,283 16,206 Pay Fixed/Receive Variable Swaps 203,667 (13,051 ) 183,283 (16,240 ) Foreign Exchange Contracts 42,777 104 44,240 (345 ) The following table presents the Company's derivative financial instruments, their fair values, and the location in the consolidated statements of condition as of December 31, 2015 and 2014 : December 31, 2015 December 31, 2014 Derivative Financial Instruments Not Designated 1 (dollars in thousands) Asset Liability Asset Liability Interest Rate Lock Commitments $ 270 $ — $ 152 $ — Forward Commitments 5 1 — 13 Interest Rate Swap Agreements 13,543 13,573 16,262 16,296 Foreign Exchange Contracts 149 45 101 446 Total $ 13,967 $ 13,619 $ 16,515 $ 16,755 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 years ended December 31, 2015 , 2014 , and 2013 : Location of Net Gains (Losses)Recognized in the Year Ended December 31, Derivative Financial Instruments Not Designated (dollars in thousands) 2015 2014 2013 Interest Rate Lock Commitments Mortgage Banking $ 2,779 $ 3,072 $ 6,092 Forward Commitments Mortgage Banking 27 (527 ) 8,085 Interest Rate Swap Agreements Other Noninterest Income 1,085 130 292 Foreign Exchange Contracts Other Noninterest Income 2,783 3,107 3,182 Total $ 6,674 $ 5,782 $ 17,651 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 December 31, 2015 and 2014 , 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 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 marketable securities, is posted by the counterparty with net liability positions in accordance with contract thresholds. See Note 19 (Balance Sheet Offsetting) for more information. The Company’s interest rate swap agreements with institutional counterparties contain credit-risk-related contingent features tied to the Company’s debt ratings or capitalization levels. Under these provisions, if the Company’s debt rating falls below investment grade or if the Company’s capitalization levels fall below stipulated thresholds, certain counterparties may require immediate and ongoing collateralization on interest rate swaps in net liability positions, or may require immediate settlement of the contracts. As of December 31, 2015 , the Company's debt ratings and capital levels were in excess of these minimum requirements. 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. These conversion rate swap agreements are usually valued at zero (i.e., no contingent liability recorded) as a drop in the conversion ratio is deemed by the Company to be neither probable nor reasonably estimable. However, in September 2014, Visa announced a reduction of the conversion ratio. As a result, the Company recorded a $0.1 million liability in September 2014 which represented the amount paid to the buyer in October 2014. As of December 31, 2015 , these conversion rate swap agreements were valued at zero as further reductions to the conversion ratio were deemed neither probable nor reasonably estimable by management. See Note 3 (Investment Securities) for more information.

Affordable Housing Projects Tax

Affordable Housing Projects Tax Credit Partnerships Affordable Housing Projects Tax Credit Partnerships	12 Months Ended
	Dec. 31, 2015
Equity Method Investments and Joint Ventures [Abstract]
Affordable Housing Projects Tax Credit Partnerships	Affordable Housing Projects Tax Credit Partnerships The Company makes certain 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 Partnership. Each limited partnership is managed by an unrelated third party general partner who exercises full 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 consent to 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 will be recognized using the proportional amortization method. As of December 31, 2015 , there are no investments accounted for under the proportional amortization method. The Company's net affordable housing tax credit investments and related unfunded commitments were $68.8 million and $68.5 million as of December 31, 2015 and 2014 , respectively, and are included in other assets in the consolidated statements of condition. Unfunded Commitments As of December 31, 2015 , the expected payments for unfunded affordable housing commitments were as follows: (dollars in thousands) Amount 2016 $ 16,305 2017 8,778 2018 28 2019 75 2020 3 Thereafter 65 Total Unfunded Commitments $ 25,254 The following table presents tax credits and other tax benefits recognized and amortization expense related to affordable housing for the years ended December 31, 2015 , 2014 , and 2013 . (dollars in thousands) 2015 2014 2013 Effective Yield Method Tax credits and other tax benefits recognized $ 13,448 $ 10,946 $ 9,416 Amortization Expense in Provision for Income Taxes 7,735 5,881 4,673 There were no impairment losses resulting from the forfeiture or ineligibility of tax credits or other circumstances related to LIHTC investments for the years ended December 31, 2015 , 2014 , and 2013 .

Balance Sheet Offsetting

Balance Sheet Offsetting	12 Months Ended
	Dec. 31, 2015
Offsetting [Abstract]
Balance Sheet Offsetting	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 marketable securities, is posted by the counterparty with net liability positions in accordance with contract thresholds. The Company had net liability positions with its financial institution counterparties totaling $13.1 million and $16.2 million as of December 31, 2015 and December 31, 2014 , respectively. See Note 17 (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., fails 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 December 31, 2015 , disaggregated by the class of collateral pledged. Remaining Contractual Maturity of Repurchase Agreements (dollars in thousands) Up to 91-365 days 1-3 Years After Total December 31, 2015 Class of Collateral Pledged: Debt Securities Issued by the U.S. Treasury and Government Agencies $ — $ — $ 200,000 $ 110,313 $ 310,313 Debt Securities Issued by States and Political Subdivisions 47,915 4,692 100 — 52,707 Mortgage-Backed Securities: Residential - Government Agencies 1,150 51,169 — 102,919 155,238 Residential - U.S. Government-Sponsored Enterprises — 23,831 — 86,768 110,599 Total $ 49,065 $ 79,692 $ 200,100 $ 300,000 $ 628,857 The following table presents the assets and liabilities subject to an enforceable master netting arrangement, or repurchase agreements, as of December 31, 2015 and 2014 . 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. (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 December 31, 2015 Assets: Interest Rate Swap Agreements: Institutional Counterparties $ 261 $ — $ 261 $ 261 $ — $ — Liabilities: Interest Rate Swap Agreements: Institutional Counterparties 13,312 — 13,312 261 — 13,051 Repurchase Agreements: Private Institutions 575,000 — 575,000 — 575,000 — Government Entities 53,857 — 53,857 — 53,857 — $ 628,857 $ — $ 628,857 $ — $ 628,857 $ — December 31, 2014 Assets: Interest Rate Swap Agreements: Institutional Counterparties $ 28 $ — $ 28 $ 28 $ — $ — Liabilities: Interest Rate Swap Agreements: Institutional Counterparties 16,268 — 16,268 28 — 16,240 Repurchase Agreements: Private Institutions 600,000 — 600,000 — 600,000 — Government Entities 88,601 — 88,601 — 88,601 — $ 688,601 $ — $ 688,601 $ — $ 688,601 $ — 1 The application of collateral cannot reduce the net amount below zero. Therefore, excess collateral is not reflected in this table. For repurchase agreements with private institutions, the fair value of securities pledged was $663.2 million and $694.7 million as of December 31, 2015 and 2014 , respectively. For repurchase agreements with government entities, the fair value of securities pledged was $66.9 million as of December 31, 2015 .

Commitments, Contingencies, and

Commitments, Contingencies, and Guarantees	12 Months Ended
	Dec. 31, 2015
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments, Contingencies, and Guarantees The Company's credit commitments as of December 31, 2015 were as follows: (dollars in thousands) December 31, 2015 Unfunded Commitments to Extend Credit $ 2,604,429 Standby Letters of Credit 48,153 Commercial Letters of Credit 15,867 Total $ 2,668,449 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. Assets valued at $33.5 million secured certain specifically identified standby letters of credit as of December 31, 2015 . As of December 31, 2015 , the standby and commercial letters of credit had remaining terms ranging from 1 to 27 months. Lease Commitments A portion of the Company's headquarters' building is leased with a lease term through 2052. The Company leases certain other branch premises and equipment with lease terms extending through 2048. Most of the leases for premises provide for a base rent over a specified period with renewal options thereafter. Portions of certain properties are subleased for periods expiring in various years through 2024. Lease terms generally specify that the Company is to pay for taxes, maintenance, and other operating costs. Rental expense for all operating leases for the years ended December 31, 2015 , 2014 , and 2013 were as follows: (dollars in thousands) 2015 2014 2013 Minimum Rentals $ 18,826 $ 18,411 $ 19,258 Sublease Rental Income (6,212 ) (6,647 ) (6,806 ) Total $ 12,614 $ 11,764 $ 12,452 Future minimum payments for capital leases and non-cancelable operating leases with initial or remaining terms of one year or more consisted of the following as of December 31, 2015 : (dollars in thousands) Capital Leases Operating Leases 2016 $ 825 $ 13,752 2017 825 11,289 2018 825 9,974 2019 825 8,253 2020 825 7,993 Thereafter 26,405 99,276 Total Future Minimum Lease Payments 30,530 $ 150,537 Amounts Representing Interest (19,682 ) Present Value of Net Future Minimum Lease Payments $ 10,848 Minimum future rental income receivable under non-cancelable subleases was $13.5 million as of December 31, 2015 . Contingencies The Company, along with other members of Visa, are parties to Loss and Judgment Sharing Agreements (the "Agreements"), which provide that the Company along with other member banks of Visa, will share, based on its proportionate interest in Visa, in any losses from certain litigation specified in the Agreements. In March 2008, Visa funded an escrow account from its initial public offering to settle claims covered under the Agreements. In connection with the initial public offering, the Company received restricted Class B common stock in Visa. Should the escrow account established by Visa not be sufficient to cover litigation claims specified in the Agreements, 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 December 31, 2015 , management believes that the Company's indemnification of Visa, related to the costs of these lawsuits, will be sufficiently funded from the escrow account or through future reductions in the conversion ratio. See Note 3 (Investment Securities) and Note 17 (Derivative Financial Instruments) for more information. In addition to the litigation noted above, the Company is subject to various other pending and threatened legal proceedings arising out of 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 other actions 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 those 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 December 31, 2015 , the unpaid principal balance of residential mortgage loans sold by the Company was $2.5 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 potentially 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. For the year ended December 31, 2015 , the Company repurchased four residential mortgage loans with an aggregate unpaid principal balance totaling $1.2 million as a result of the representation and warranty provisions contained in these contracts. Three of these loans were delinquent as to principal and interest at the time of repurchase, however, no losses were incurred related to these repurchases. As of December 31, 2015 , 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 year ended December 31, 2015 , the Company had no repurchase requests related to loan servicing activities, nor were there any pending repurchase requests as of December 31, 2015 . 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 December 31, 2015 , 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 December 31, 2015 , 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 Liabil

Fair Value of Assets and Liabilities	12 Months Ended
	Dec. 31, 2015
Fair Value Disclosures [Abstract]
Fair Value of Assets and Liabilities	Fair Value of Assets and Liabilities The following is a description of the valuation methodologies and key inputs used to measure assets and liabilities recorded at fair value on a recurring 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 December 31, 2015 and 2014 , 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 significant assumptions and valuation methodologies used. 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, 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 the LIBOR swap 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 December 31, 2015 and 2014, the conversion rate swap agreements were valued at zero as reductions to the conversion ratio were neither probable nor reasonably estimable by management. These conversion rate swap agreements are classified as a Level 2 measurement. See Note 17 (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 December 31, 2015 and 2014 : (dollars in thousands) Quoted Prices Significant Significant Total December 31, 2015 Assets: Investment Securities Available-for-Sale Debt Securities Issued by the U.S. Treasury and Government Agencies $ 545 $ 358,349 $ — $ 358,894 Debt Securities Issued by States and Political Subdivisions — 731,918 — 731,918 Debt Securities Issued by Corporations — 308,870 — 308,870 Mortgage-Backed Securities: Residential - Government Agencies — 316,245 — 316,245 Residential - U.S. Government-Sponsored Enterprises — 441,864 — 441,864 Commercial - Government Agencies — 99,027 — 99,027 Total Mortgage-Backed Securities — 857,136 — 857,136 Total Investment Securities Available-for-Sale 545 2,256,273 — 2,256,818 Loans Held for Sale — 4,808 — 4,808 Mortgage Servicing Rights — — 1,970 1,970 Other Assets 20,262 — — 20,262 Derivatives 1 — 154 13,813 13,967 Total Assets Measured at Fair Value on a $ 20,807 $ 2,261,235 $ 15,783 $ 2,297,825 Liabilities: Derivatives 1 $ — $ 46 $ 13,573 $ 13,619 Total Liabilities Measured at Fair Value on a $ — $ 46 $ 13,573 $ 13,619 December 31, 2014 Assets: Investment Securities Available-for-Sale Debt Securities Issued by the U.S. Treasury and Government Agencies $ 61,271 $ 269,987 $ — $ 331,258 Debt Securities Issued by States and Political Subdivisions — 743,970 — 743,970 Debt Securities Issued by Corporations — 294,833 — 294,833 Mortgage-Backed Securities: Residential - Government Agencies — 462,436 — 462,436 Residential - U.S. Government-Sponsored Enterprises — 278,461 — 278,461 Commercial - Government Agencies — 178,232 — 178,232 Total Mortgage-Backed Securities — 919,129 — 919,129 Total Investment Securities Available-for-Sale 61,271 2,227,919 — 2,289,190 Loans Held for Sale — 5,136 — 5,136 Mortgage Servicing Rights — — 2,604 2,604 Other Assets 18,794 — — 18,794 Derivatives 1 — 101 16,414 16,515 Total Assets Measured at Fair Value on a $ 80,065 $ 2,233,156 $ 19,018 $ 2,332,239 Liabilities: Derivatives 1 $ — $ 459 $ 16,296 $ 16,755 Total Liabilities Measured at Fair Value on a $ — $ 459 $ 16,296 $ 16,755 1 The fair value of each class of derivatives is shown in Note 17 to the Consolidated Financial Statements. For the years ended December 31, 2015 and 2014 , the changes in Level 3 assets and liabilities measured at fair value on a recurring basis were as follows: (dollars in thousands) Mortgage 1 Net Derivative Assets and Liabilities 2 Year Ended December 31, 2015 Balance as of January 1, 2015 $ 2,604 $ 118 Realized and Unrealized Net Gains (Losses): Included in Net Income (634 ) 2,783 Transfers to Loans Held for Sale — (2,661 ) Balance as of December 31, 2015 $ 1,970 $ 240 Total Unrealized Net Gains (Losses) Included in Net Income $ (251 ) $ 240 Year Ended December 31, 2014 Balance as of January 1, 2014 $ 3,826 $ 379 Realized and Unrealized Net Gains (Losses): Included in Net Income (1,222 ) 3,195 Transfers to Loans Held for Sale — (3,456 ) Balance as of December 31, 2014 $ 2,604 $ 118 Total Unrealized Net Gains (Losses) Included in Net Income $ (868 ) $ 118 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 December 31, 2015 and 2014 , the significant unobservable inputs used in the fair value measurements were as follows: Significant Unobservable Inputs (weighted-average) Fair Value December 31, December 31, (dollars in thousands) Valuation Technique Description 2015 2014 2015 2014 Mortgage Servicing Rights Discounted Cash Flow Constant Prepayment Rate 1 9.10 % 11.62 % $ 26,774 $ 25,441 Discount Rate 2 9.38 % 10.61 % Net Derivative Assets and Liabilities: Interest Rate Lock Commitments Pricing Model Closing Ratio 94.70 % 93.85 % $ 270 $ 152 Interest Rate Swap Agreements Discounted Cash Flow Credit Factor 0.22 % 0.21 % $ (30 ) $ (34 ) 1 Represents annualized loan repayment rate assumption. 2 Derived from multiple interest rate scenarios that incorporate a spread to the London Interbank Offered Rate swap 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 December 31, 2015 and 2014 . (dollars in thousands) Fair Value Hierarchy Net Carrying Amount Valuation Allowance December 31, 2015 Mortgage Servicing Rights - amortization method Level 3 $ 21,032 $ 21 Foreclosed Real Estate Level 3 824 — Other Assets - Equipment Held for Sale Level 3 4,657 9,453 December 31, 2014 Mortgage Servicing Rights - amortization method Level 3 $ 22,091 $ 57 Foreclosed Real Estate Level 3 2,311 89 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. The December 31, 2014 valuation allowance for the Company's foreclosed real estate related to one commercial property. This property was sold in the third quarter of 2015. The Company's equipment held for sale represents six aircraft that were previously on lease agreements. An impairment charge of $9.5 million (included in other noninterest expense in the Company's consolidated statements of income) was recorded in the third quarter of 2015 to reduce the carrying value to estimated fair value less cost to sell based on recent appraisals, market conditions, and management judgment. The aircraft are currently being marketed for sale through a third party broker. Due to the use of significant unobservable inputs combined with significant management judgment regarding the fair value of the six aircraft, the carrying value is deemed a Level 3 measurement. For segment reporting (see Note 13 (Business Segments)), the carrying value is included in the Commercial Banking segment. As appraisals on foreclosed real estate and equipment held for sale are not necessarily completed on the period end dates presented in the table above, the fair value information presented may not reflect the actual fair value as of December 31, 2015 and 2014 . Fair Value Option The Company elected the fair value option for all residential mortgage loans held for sale originated on or after October 1, 2011. 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 December 31, 2015 and 2014 . (dollars in thousands) Aggregate Aggregate Aggregate Fair Value December 31, 2015 Loans Held for Sale $ 4,808 $ 4,575 $ 233 December 31, 2014 Loans Held for Sale $ 5,136 $ 4,740 $ 396 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 years ended December 31, 2015 and 2014 , 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 and loan quality categories. 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 approach, 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 December 31, 2015 and 2014 . 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 (dollars in thousands) Carrying Amount Fair Value Quoted Prices in Active Markets for Identical Assets or Liabilities(Level 1) Significant Significant December 31, 2015 Financial Instruments – Assets Investment Securities Held-to-Maturity $ 3,982,736 $ 4,006,412 $ 489,967 $ 3,516,445 $ — Loans 1 7,538,454 7,967,385 — — 7,967,385 Financial Instruments – Liabilities Time Deposits 1,177,651 1,178,837 — 1,178,837 — Securities Sold Under Agreements to Repurchase 628,857 686,853 — 686,853 — Other Debt 2 234,938 235,668 — 235,668 — December 31, 2014 Financial Instruments – Assets Investment Securities Held-to-Maturity $ 4,466,679 $ 4,504,495 $ 499,616 $ 4,004,879 $ — Loans 1 6,542,719 7,048,757 — — 7,048,757 Financial Instruments – Liabilities Time Deposits 1,434,001 1,437,064 — 1,437,064 — Securities Sold Under Agreements to Repurchase 688,601 758,781 — 758,781 — Other Debt 2 163,005 163,911 — 163,911 — 1 Net of unearned income and the Allowance. 2 Excludes capitalized lease obligations.

Bank of Hawaii Corporation Fina

Bank of Hawaii Corporation Financial Statements	12 Months Ended
	Dec. 31, 2015
Condensed Financial Information of Parent Company Only Disclosure [Abstract]
Bank of Hawaii Corporation Financial Statements	Bank of Hawaii Corporation Financial Statements Condensed financial statements of the Parent were as follows: Condensed Statements of Comprehensive Income Year Ended December 31, (dollars in thousands) 2015 2014 2013 Income Dividends and Interest from Bank of Hawaii $ 115,000 $ 136,000 $ 133,000 Investment Securities Gains, Net 9,870 7,810 — Other Income 973 690 727 Total Income 125,843 144,500 133,727 Noninterest Expense Intercompany Salaries and Services 651 839 852 Other Expenses 2,325 2,067 2,942 Total Noninterest Expense 2,976 2,906 3,794 Income Before Income Tax Benefit and Equity in Undistributed Income of Subsidiaries 122,867 141,594 129,933 Income Tax Benefit (Expense) (1,670 ) 225 2,211 Equity in Undistributed Income of Subsidiaries 39,507 21,223 18,358 Net Income $ 160,704 $ 163,042 $ 150,502 Comprehensive Income $ 163,833 $ 168,179 $ 89,471 Condensed Statements of Condition (dollars in thousands) December 31, 2015 December 31, 2014 Assets Cash with Bank of Hawaii $ 63,755 $ 68,563 Investment Securities Held-to-Maturity 4,960 4,947 Goodwill 14,129 14,129 Income Taxes Receivable and Deferred Tax Assets 2,445 2,868 Other Assets 7,842 7,825 Equity in Net Assets of Subsidiaries 1,036,977 976,354 Total Assets $ 1,130,108 $ 1,074,686 Liabilities Income Taxes Payable $ 5,072 $ 6,269 Other Liabilities 8,776 13,331 Total Liabilities 13,848 19,600 Shareholders' Equity 1,116,260 1,055,086 Total Liabilities and Shareholders' Equity $ 1,130,108 $ 1,074,686 Condensed Statements of Cash Flows Year Ended December 31, (dollars in thousands) 2015 2014 2013 Operating Activities Net Income $ 160,704 $ 163,042 $ 150,502 Adjustments to Reconcile Net Income to Net Cash Provided by Operating Activities: Share-Based Compensation 639 656 616 Net Gains on Sales of Investment Securities (9,870 ) (7,810 ) — Equity in Undistributed Income of Subsidiaries (39,507 ) (21,223 ) (18,358 ) Net Change in Other Assets and Other Liabilities (481 ) 78 1,980 Net Cash Provided by Operating Activities 111,485 134,743 134,740 Investing Activities Capital Contributions to the Bank (10,179 ) — — Proceeds from Sales of Investment Securities 9,870 7,810 — Purchase of Investment Securities Held-to-Maturity — (4,936 ) — Net Cash Provided by (Used in) Investing Activities (309 ) 2,874 — Financing Activities Proceeds from Issuance of Common Stock 15,364 9,995 14,495 Repurchase of Common Stock (52,981 ) (64,046 ) (39,655 ) Cash Dividends Paid (78,367 ) (79,660 ) (80,534 ) Net Cash Used in Financing Activities (115,984 ) (133,711 ) (105,694 ) Net Change in Cash and Cash Equivalents (4,808 ) 3,906 29,046 Cash and Cash Equivalents at Beginning of Period 68,563 64,657 35,611 Cash and Cash Equivalents at End of Period $ 63,755 $ 68,563 $ 64,657

Summary of Significant Accoun31

Summary of Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2015
Accounting Policies [Abstract]
Basis of Presentation	The accounting and reporting principles of the Company conform to U.S. generally accepted accounting principles ("GAAP") and prevailing practices within the financial services industry.
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.
Consolidation	Consolidation The Consolidated Financial Statements include the accounts of the Parent and its subsidiaries. The Parent's principal operating subsidiary is Bank of Hawaii (the "Bank"). All significant intercompany accounts and transactions have been eliminated in consolidation.
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 a limited partnership interest in several low-income housing partnerships. These partnerships provide funds for the construction and operation of apartment complexes that provide affordable housing to that segment of the population with lower family income. 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. See Accounting Standards Adopted in 2015 below for more information. Unfunded commitments to fund these low-income housing partnerships were $25.3 million and $31.4 million as of December 31, 2015 and 2014 , respectively. These unfunded commitments are unconditional and legally binding and are recorded in other liabilities in the consolidated statements of condition. The Company also has limited partnership interests in three solar energy tax credit partnership investments. These partnerships develop, build, own and operate solar renewable energy projects. Over the course of the investment, the Company will 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. The tax benefits are generally recognized over 6 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 investment in these entities is 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 $79.0 million and $77.5 million as of December 31, 2015 and 2014 , respectively, and is included in other assets in the consolidated statements of condition.
Investment Securities	Investment Securities Investment securities are accounted for according to their purpose and holding period. Trading securities are those that are bought and held principally for the purpose of selling them in the near term. The Company held no trading securities as of December 31, 2015 and 2014 . Available-for-sale investment securities, comprised of debt and mortgage-backed securities, are those that may be sold before maturity due to changes in the Company's interest rate risk profile or funding needs, and are reported at fair value with unrealized gains and losses, net of taxes, reported as a component of other comprehensive income. Held-to-maturity investment securities, comprised of debt and mortgage-backed securities, are those that management has the positive intent and ability to hold to maturity and are reported at amortized cost. Realized gains and losses are recorded in noninterest income and are determined on a trade date basis using the specific identification method. Interest and dividends on investment securities are recognized in interest income on an accrual basis. Premiums and discounts are amortized or accreted into interest income using the interest method over the expected lives of the individual securities. Transfers of debt securities from the available-for-sale category to the held-to-maturity category are made at fair value at the date of transfer. The unrealized holding gain or loss at the date of transfer remains in accumulated other comprehensive income and in the carrying value of the held-to-maturity investment security. Premiums or discounts on investment securities are amortized or accreted as an adjustment of yield using the interest method over the estimated life of the security. Unrealized holding gains or losses that remain in accumulated other comprehensive income are also amortized or accreted over the estimated life of the security as an adjustment of yield, offsetting the related amortization of the premium or accretion of the discount.
Other-Than-Temporary Impairments of Investment Securities	Other-Than-Temporary-Impairments of Investment Securities The Company conducts an other-than-temporary-impairment ("OTTI") analysis of investment securities on a quarterly basis or more often if a potential loss-triggering event occurs. A write-down of a debt security is recorded when fair value is below amortized cost in circumstances where: (1) the Company has the intent to sell a security; (2) it is more likely than not that the Company will be required to sell the security before recovery of its amortized cost basis; or (3) the Company does not expect to recover the entire amortized cost basis of the security. If the Company intends to sell a security or if it is more likely than not that the Company will be required to sell the security before recovery, an OTTI write-down is recognized in earnings equal to the entire difference between the security's amortized cost basis and its fair value. If the Company does not intend to sell the security or it is not more likely than not that it will be required to sell the security before recovery, the OTTI write-down is separated into an amount representing credit loss, which is recognized in earnings, and an amount related to all other factors, which is recognized in other comprehensive income. To determine the amount related to credit loss on a debt security, the Company applies a methodology similar to that used for evaluating the impairment of loans. As of December 31, 2015 , management determined that the Company did not own any investment securities that were other-than-temporarily-impaired.
Loans Held for Sale	Loans Held for Sale Residential mortgage loans with the intent to be sold in the secondary market are accounted for on an aggregate basis under the fair value option. Fair value is primarily determined based on quoted prices for similar loans in active markets. Non-refundable fees and direct loan origination costs related to residential mortgage loans held for sale are recognized as part of the cost basis of the loan at the time of sale. Gains and losses on sales of residential mortgage loans (sales proceeds minus carrying value) are recorded in the mortgage banking component of noninterest income. Commercial loans that management has an active plan to sell are valued on an individual basis at the lower-of-cost-or fair value. Fair value is primarily determined based on quoted prices for similar loans in active markets or agreed upon sales prices. Any reduction in the loan's value, prior to being transferred to the held for sale category, is reflected as a charge-off of the recorded investment in the loan resulting in a new cost basis, with a corresponding reduction in the allowance for loan and lease losses. Further decreases in the fair value of the loan are recognized in noninterest expense.
Loans and Leases	Loans and Leases Loans are reported at the principal amount outstanding, net of unearned income including unamortized deferred loan fees and costs, and cumulative net charge-offs. Interest income is recognized on an accrual basis. Loan origination fees, certain direct costs, and unearned discounts and premiums, if any, are deferred and are generally amortized into interest income as yield adjustments using the interest method over the contractual life of the loan. Loan commitment fees are generally recognized into noninterest income. Other credit-related fees are recognized as fee income, a component of noninterest income, when earned. Direct financing leases are carried at the aggregate of lease payments receivable plus the estimated residual value of leased property, less unearned income. Leveraged leases, which are a form of direct financing leases, are carried net of non-recourse debt. Unearned income on direct financing and leveraged leases is amortized over the lease term by methods that approximate the interest method. Residual values on leased assets are periodically reviewed for impairment. Portfolio segments are defined as the level at which an entity develops and documents a systematic methodology to determine its allowance for loan and lease losses (the "Allowance"). Management has determined that the Company has two portfolio segments of loans and leases (commercial and consumer) in determining the Allowance. Both quantitative and qualitative factors are used by management at the portfolio segment level in determining the adequacy of the Allowance for the Company. Classes of loans and leases are a disaggregation of a Company's portfolio segments. Classes are defined as a group of loans and leases which share similar initial measurement attributes, risk characteristics, and methods for monitoring and assessing credit risk. Management has determined that the Company has eight classes of loans and leases (commercial and industrial, commercial mortgage, construction, lease financing, residential mortgage, home equity, automobile, and other). The "other" class of loans and leases is comprised of revolving credit, credit cards, installment, and lease financing arrangements.
Non-Performing Loans and Leases	Non-Performing Loans and Leases Generally, all classes of commercial loans and leases are placed on non-accrual status upon becoming contractually past due 90 days as to principal or interest (unless loans and leases are adequately secured by collateral, are in the process of collection, and are reasonably expected to result in repayment), when terms are renegotiated below market levels, or where substantial doubt about full repayment of principal or interest is evident. For residential mortgage and home equity loan classes, loans past due 120 days as to principal or interest may be placed on non-accrual status, and a partial charge-off may be recorded, depending on the collateral value and/or the collectability of the loan. For automobile and other consumer loan classes, the entire outstanding balance of the loan is charged off when the loan becomes 120 days past due (180 days past due for credit cards) as to principal or interest. When a loan or lease is placed on non-accrual status, the accrued and unpaid interest receivable is reversed and the loan or lease is accounted for on the cash or cost recovery method until qualifying for return to accrual status. All payments received on non-accrual loans and leases are applied against the principal balance of the loan or lease. A loan or lease may be returned to accrual status when all delinquent interest and principal become current in accordance with the terms of the loan or lease agreement and when doubt about repayment is resolved. Generally, for all classes of loans and leases, a charge-off is recorded when it is probable that a loss has been incurred and when it is possible to determine a reasonable estimate of the loss. For all classes of commercial loans and leases, a charge-off is determined on a judgmental basis after due consideration of the debtor's prospects for repayment and the fair value of collateral. For the pooled segment of the Company's commercial and industrial loan class, which consists of small business loans, the entire outstanding balance of the loan remains on accrual status until it is charged off during the month that the loan becomes 120 days past due as to principal or interest. As previously mentioned, for residential mortgage and home equity loan classes, a partial charge-off may be recorded at 120 days past due as to principal or interest depending on the collateral value and/or the collectability of the loan. In the event that a loan or line in the home equity loan class is behind another financial institution's first mortgage, the entire outstanding balance of the loan is charged off when the loan becomes 120 days past due as to principal or interest, unless the combined loan-to-value ratio is 60% or less. As noted above, loans in the automobile and other consumer loan classes are charged off in its entirety upon the loan becoming 120 days past due (180 days past due for credit cards) as to principal or interest.
Impaired Loans	Impaired Loans A loan is considered impaired when, based on current information and events, it is probable that the Company will not be able to collect all amounts due from the borrower in accordance with the contractual terms of the loan, including scheduled interest payments. Impaired loans include all classes of commercial non-accruing loans (except lease financing and small business loans), and all loans modified in a troubled debt restructuring. Impaired loans exclude lease financing and smaller balance homogeneous loans (consumer and small business non-accruing loans) that are collectively evaluated for impairment. For all classes of commercial loans, a quarterly evaluation of individual commercial borrowers is performed to identify impaired loans. The identification of specific borrowers for review is based on a review of non-accrual loans as well as those loans specifically identified by management as exhibiting above average levels of risk. When a loan has been identified as being impaired, the amount of impairment 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. If the measurement of the impaired loan is less than the recorded investment in the loan (including accrued interest, net of deferred loan fees or costs, and unamortized premiums or discounts), impairment is recognized by establishing or adjusting an existing allocation of the Allowance, or by recording a partial charge-off of the loan to its fair value. Interest payments made on impaired loans are typically applied to principal unless collectability of the principal amount is reasonably assured, in which case interest income may be accrued or recognized on a cash basis.
Loans Modified in a Troubled Debt Restructuring	Loans Modified in a Troubled Debt Restructuring Loans are considered to have been modified in a troubled debt restructuring when, due to a borrower's financial difficulties, the Company makes certain concessions to the borrower that it would not otherwise consider. Modifications may include interest rate reductions, principal or interest forgiveness, forbearance, and other actions intended to minimize economic loss and to avoid foreclosure or repossession of collateral. Generally, a non-accrual loan that has been modified in a troubled debt restructuring remains on non-accrual status for a period of at least 6 months to demonstrate that the borrower is able to meet the terms of the modified loan. However, performance prior to the modification, or significant events that coincide with the modification, are included in assessing whether the borrower can meet the new terms and may result in the loan being returned to accrual status at the time of loan modification or after a shorter performance period. If the borrower's ability to meet the revised payment schedule is uncertain, the loan remains on non-accrual status.
Reserve for Credit Losses	Reserve for Credit Losses The Company's reserve for credit losses is comprised of two components, the Allowance and the reserve for unfunded commitments (the "Unfunded Reserve").
Allowance for Loan and Lease Losses	Allowance for Loan and Lease Losses The Company maintains an Allowance adequate to cover management's estimate of probable credit losses as of the balance sheet date. Loans and leases that are charged off reduce the Allowance while recoveries of loans and leases previously charged off increase the Allowance. Other changes to the level of the Allowance are recognized through charges or credits to the provision for credit losses (the "Provision"). The Allowance considers both unimpaired and impaired loans and is developed and documented at the portfolio segment level (commercial and consumer). The level of the Allowance related to the Company's commercial portfolio segment is generally based on the credit risk ratings and historical loss experience of individual borrowers. This is supplemented as necessary by credit judgment to address observed changes in trends and conditions, and other relevant environmental and economic factors that may affect the collectability of loans and leases. Excluding those loans and leases evaluated individually for impairment, the Company's remaining commercial loans and leases are pooled and collectively evaluated for impairment based on business unit and internal risk rating segmentation. The level of the Allowance related to the Company's consumer portfolio segment is generally based on analyses of homogeneous pools of loans and leases. Loans and leases are pooled based on similar loan and lease risk characteristics for collective evaluation of impairment. Loss estimates are calculated based on historical rolling average loss rates and average delinquency flows to loss. Consumer loans that have been individually evaluated for impairment or modified in a troubled debt restructuring are excluded from the homogeneous pools. Impairment related to such loans is generally determined based on the present value of expected future cash flows discounted at the loan's original effective interest rate. The Allowance also includes an estimate for inherent losses not reflected in the historical analyses. Relevant factors include, but are not limited to, concentrations of credit risk (geographic, large borrower, and industry), economic trends and conditions, changes in underwriting standards, experience and depth of lending staff, trends in delinquencies, and the level of net charge-offs. In addition, the Company uses a variety of other tools to estimate probable credit losses including, but not limited to, a rolling quarterly forecast of asset quality metrics; stress testing; and performance indicators based on the Company's own experience, peers, or other industry sources.
Reserve for Unfunded Commitments	Reserve for Unfunded Commitments The Unfunded Reserve is a component of other liabilities and represents the estimate for probable credit losses inherent in unfunded commitments to extend credit. Unfunded commitments to extend credit include banker's acceptances, and standby and commercial letters of credit. The process used to determine the Unfunded Reserve is consistent with the process for determining the Allowance, as adjusted for estimated funding probabilities or loan and lease equivalency factors. The level of the Unfunded Reserve is adjusted by recording an expense or recovery in other noninterest expense.
Cash and Cash Equivalents	Cash and Cash Equivalents Cash and cash equivalents include cash and due from banks, interest-bearing deposits in other banks, and funds sold. All amounts are readily convertible to cash and have maturities of less than 90 days.
Premises and Equipment	Premises and Equipment Premises and equipment, including leasehold improvements, are stated at cost, less accumulated depreciation and amortization. Capital leases are included in premises and equipment at the capitalized amount less accumulated amortization. Premises and equipment are depreciated using the straight-line method over the estimated useful lives of the respective assets. Estimated useful lives generally range up to 30 years for buildings and up to 10 years for equipment. Capitalized leased assets and leasehold improvements are amortized over the shorter of the estimated useful life of the asset or the lease term. Repairs and maintenance are charged to expense as incurred, while improvements which extend the estimated useful life of the asset are capitalized and depreciated over the estimated remaining life of the asset. Premises and equipment are periodically evaluated for impairment when events or changes in circumstances indicate the carrying amount may not be recoverable. Impairment exists when the expected undiscounted future cash flows of premises and equipment are less than its carrying amount. In that event, the Company records a loss for the difference between the carrying amount and the fair value of the asset based on quoted market prices, if applicable, or a discounted cash flow analysis
Foreclosed Real Estate	Foreclosed Real Estate Foreclosed real estate consists of properties acquired through foreclosure proceedings or acceptance of a deed-in-lieu of foreclosure. These properties are recorded at fair value less estimated costs to sell the property. If the recorded investment in the loan exceeds the property's fair value at the time of acquisition, a charge-off is recorded against the Allowance. If the fair value of the property at the time of acquisition exceeds the carrying amount of the loan, the excess is recorded either as a recovery to the Allowance if a charge-off had previously been recorded, or as a gain on initial transfer in other noninterest income. Subsequent decreases in the property's fair value and operating expenses of the property are recognized through charges to other noninterest expense. The fair value of the property acquired is based on third party appraisals, broker price opinions, recent sales activity, or a combination thereof, subject to management judgment.
Mortgage Servicing Rights	Mortgage Servicing Rights Mortgage servicing rights are recognized as assets when mortgage loans are sold and the rights to service those loans are retained. Mortgage servicing rights are initially recorded at fair value by using a discounted cash flow model to calculate the present value of estimated future net servicing income. The Company's mortgage servicing rights accounted for under the fair value method are carried on the statements of condition at fair value with changes in fair value recorded in mortgage banking income in the period in which the change occurs. Changes in the fair value of mortgage servicing rights are primarily due to changes in valuation inputs, assumptions, and the collection and realization of expected cash flows. The Company's mortgage servicing rights accounted for under the amortization method are initially recorded at fair value. However, these mortgage servicing rights are amortized in proportion to and over the period of estimated net servicing income. An impairment analysis is prepared on a quarterly basis by estimating the fair value of the mortgage servicing rights and comparing that value to the carrying amount. A valuation allowance is established when the carrying amount of these mortgage servicing rights exceeds fair value.
Goodwill	Goodwill Goodwill is initially recorded as the excess of the purchase price over the fair value of the net assets acquired in a business combination and is subsequently evaluated at least annually for impairment. Goodwill impairment testing is performed at the reporting unit level, equivalent to a business segment or one level below. The Company has two reporting units that were assigned goodwill: Investment Services and Retail Banking. The Company performs its annual evaluation of goodwill impairment in the fourth quarter of each year and on an interim basis if events or changes in circumstances indicate that there may be impairment. The Company performs a qualitative assessment to determine whether it is more likely than not that the fair value of a reporting unit is less than its carrying amount. The qualitative factors considered include, but are not limited to, macroeconomic and State of Hawaii economic conditions, industry and market conditions and trends, the Company's financial performance, market capitalization, stock price, and any Company-specific events relevant to the assessment. If the assessment of qualitative factors indicates that it is not more likely than not that an impairment exists, no further testing is performed; otherwise an impairment test is performed. The goodwill impairment test is a two-step test. The first step of the goodwill impairment test compares the estimated fair value of identified reporting units with their carrying amount, including goodwill. If the estimated fair value of a reporting unit is less than the carrying value, the second step must be performed to determine the implied fair value of the reporting unit's goodwill and the amount of goodwill impairment, if any. The implied fair value of goodwill is determined as if the reporting unit were being acquired in a business combination. If the implied fair value of goodwill exceeds the goodwill assigned to the reporting unit, there is no impairment. If the implied fair value of goodwill is less than the carrying amount, a loss would be recognized in other noninterest expense to reduce the carrying amount to the implied fair value of goodwill. Subsequent reversals of goodwill impairment are prohibited. For the year ended December 31, 2015 , the Company's goodwill impairment evaluation indicated that there was no impairment.
Non-Marketable Equity Securities	Non-Marketable Equity Securities The Company is required to own Federal Home Loan Bank ("FHLB") of Des Moines and Federal Reserve Bank ("FRB") stock as a condition of membership. These non-marketable equity securities are accounted for at cost which equals par or redemption value. These securities do not have a readily determinable fair value as their ownership is restricted and there is no market for these securities. 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 are periodically evaluated 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 by recognizing temporary declines in value.
Securities Sold Under Agreements to Repurchase	Securities Sold Under Agreements to Repurchase 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, securities sold under agreements to repurchase are accounted for as collateralized financing arrangements (i.e., secured borrowings) and not as a sale and subsequent repurchase 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 securities sold under agreements to repurchase remain in the respective asset accounts. See Note 19 (Balance Sheet Offsetting) for more information.
Pension and Postretirement Benefit Plans	Pension and Postretirement Benefit Plans The Company incurs certain employment-related expenses associated with its two frozen pension plans and a postretirement benefit plan (the "Plans"). In order to measure the expense associated with the Plans, various assumptions are made including the discount rate, expected return on plan assets, anticipated mortality rates, and expected future healthcare costs. The assumptions are based on historical experience as well as current facts and circumstances. The Company uses a December 31 measurement date for its Plans. As of the measurement date, plan assets are determined based on fair value, generally representing observable market prices. The projected benefit obligation is primarily determined based on the present value of projected benefit distributions at an assumed discount rate. Net periodic pension benefit costs include interest costs based on an assumed discount rate, the expected return on plan assets based on actuarially derived market-related values, and the amortization of net actuarial gains or losses. Net periodic postretirement benefit costs include service costs, interest costs based on an assumed discount rate, and the amortization of prior service credits and net actuarial gains or losses. Differences between expected and actual results in each year are included in the net actuarial gain or loss amount, which is recognized in other comprehensive income. The net actuarial gain or loss in excess of a 10% corridor is amortized in net periodic benefit cost over the average remaining expected lives of the pension plan participants and over the average remaining future service years of the postretirement benefit plan participants. The prior service credit is amortized over the average remaining service period to full eligibility for participating employees expected to receive benefits. The Company recognizes in its consolidated statements of condition an asset for a plan's overfunded status or a liability for a plan's underfunded status. The Company also measures the Plans' assets and obligations that determine its funded status as of the end of the year and recognizes those changes in other comprehensive income, net of tax.
Income Taxes	Income Taxes The Parent files a consolidated federal income tax return with the Bank and its subsidiaries. Calculation of the Company's provision for income taxes requires the interpretation of income tax laws and regulations and the use of estimates and judgments in its determination. The Company is subject to examination by governmental authorities that may give rise to income tax issues due to differing interpretations. Changes to the liability for income taxes also occur due to changes in income tax rates, implementation of new business strategies, resolution of issues with taxing authorities, and newly enacted statutory, judicial, and regulatory guidance. Deferred income taxes are provided to reflect the tax effect of temporary differences between financial statement carrying amounts and the corresponding tax basis of assets and liabilities. Deferred income taxes are calculated by applying enacted statutory tax rates and tax laws to future years in which temporary differences are expected to reverse. The impact on deferred tax assets and liabilities from a change in tax rates is recognized in income in the period that the tax rate change is enacted. A deferred tax valuation allowance is established if it is more likely than not that a deferred tax asset will not be realized. The Company's tax sharing policy provides for the settlement of income taxes between each relevant subsidiary as if the subsidiary had filed a separate return. Payments are made to the Parent by subsidiaries with tax liabilities and subsidiaries that generate tax benefits receive payments for those benefits as used. The Company maintains reserves for certain tax positions that arise in the normal course of business. As of December 31, 2015 , these positions were evaluated based on an assessment of probabilities as to the likelihood of whether a liability had been incurred. Such assessments are reviewed as events occur and adjustments to the reserves are made as appropriate. In evaluating a tax position for recognition, the Company evaluates whether it is more likely than not that a tax position will be sustained upon examination, including resolution of related appeals or litigation processes, based on the technical merits of the position. If the tax position meets the more likely than not recognition threshold, the tax position is measured and recognized in the Company's Consolidated Financial Statements as the largest amount of tax benefit that, in management's judgment, is greater than 50% likely of being realized upon ultimate settlement.
Treasury Stock	Treasury Stock Shares of the Parent's common stock that are repurchased are recorded in treasury stock at cost. On the date of subsequent re-issuance, the treasury stock account is reduced by the cost of such stock on a first-in, first-out basis.
Earnings Per Share	Earnings Per Share Basic earnings per share is computed by dividing net income by the weighted average number of common shares outstanding for the period. Diluted earnings per share is computed by dividing net income by the weighted average number of common shares outstanding for the period, assuming conversion of all potentially dilutive common stock equivalents.
Derivative Financial Instruments	Derivative Financial Instruments In the ordinary course of business, the Company enters into derivative financial instruments as an end-user in connection with its risk management activities and to accommodate the needs of its customers. The Company has elected not to qualify for hedge accounting methods addressed under current provisions of GAAP. Derivative financial instruments are stated at fair value on the consolidated statements of condition with changes in fair value reported in current period earnings.
Share-Based Compensation	Share-Based Compensation The Company may grant share-based compensation to employees and non-employee directors in the form of restricted stock, restricted stock units and stock options. The fair value of restricted stock is determined based on the closing price of the Parent's common stock on the date of grant. The Company recognizes compensation expense related to restricted stock on a straight-line basis over the vesting period for service-based awards, plus additional recognition of costs associated with accelerated vesting based on the projected attainment of Company performance measures. Beginning in 2014, the Company issued restricted stock units ("RSUs") payable solely in cash which are accounted for as other liabilities in the statement of condition. The fair value of RSUs is initially valued based on the closing price of the Parent's common stock on the date of grant and is amortized in the statement of income over the vesting period. The RSUs are subsequently remeasured in the same manner described above at the end of each reporting period until settlement. The fair value of stock options is estimated at the date of grant using the Black-Scholes option pricing model and related assumptions. The Company uses historical data to predict option exercise and employee termination behavior. Expected volatilities are based on the historical volatility of the Parent's common stock. The expected term of options granted is derived from actual historical exercise activity and represents the period of time that options granted are expected to be outstanding. The risk-free rate is derived from the U.S. Treasury yield curve in effect at the time of grant based on the expected life of the option. The dividend yield is equal to the dividend yield of the Parent's common stock at the time of grant. The amortization of the expense related to stock options reflects estimated forfeitures, adjusted for actual forfeiture experience. Amortization expense related to stock options is recorded in the statements of income as a component of salaries and benefits for employees and as a component of other noninterest expense for non-employee directors, with a corresponding increase to capital surplus in shareholders' equity. As the expense related to stock options is recognized, a deferred tax asset is established that represents an estimate of future income tax deductions from the release of restrictions or the exercise of stock options.
Advertising Costs	Advertising Costs Advertising costs are expensed as incurred
International Operations	International Operations The Bank has operations that are conducted in certain Pacific Islands that are denominated in U.S. dollars. These operations are classified as domestic.
Fair Value Measurements	Fair Value Measurements Fair value measurements apply whenever GAAP requires or permits assets or liabilities to be measured at fair value either on a recurring or nonrecurring basis. 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. Fair value is based on the assumptions that management believes market participants would use when pricing an asset or liability. Fair value measurement and disclosure guidance established a three-level fair value hierarchy that prioritizes the use of inputs used in valuation methodologies. 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. The three-level fair value hierarchy is as follows: 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 shall be 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 requires significant management judgment or estimation, some of which may be internally developed. In determining fair value measurements, management assesses whether the volume and level of activity for an asset or liability have significantly decreased. In such instances, management determines whether recent quoted prices are associated with illiquid or inactive markets. If management concludes that quoted prices are associated with illiquid or inactive markets, adjustments to quoted prices may be necessary or management may conclude that a change in valuation technique or the use of multiple valuation techniques may be appropriate to estimate an asset or liability's fair value
Accounting Standards Adopted in the Current Year or Pending Adoption	Accounting Standards Adopted in 2015 In January 2014, the FASB issued ASU No. 2014-01, "Accounting for Investments in Qualified Affordable Housing Projects." 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. Under the proportional amortization method, an entity amortizes the initial cost of the investment in proportion to the tax credits and other tax benefits received and recognizes the net investment performance in the income statement as a component of income tax expense. This new guidance also requires new disclosures for all investors in these projects (see Note 18 (Affordable Housing Projects Tax Credit Partnerships)). The Company adopted ASU No. 2014-01 effective January 1, 2015. Upon adoption, the guidance must be applied retrospectively to all periods presented. However, entities that used the effective yield method to account for investments in these projects before adoption may continue to do so for these pre-existing investments. Prior to adoption of ASU No. 2014-01, the Company accounted for such investments using the effective yield method and continued to do so for these pre-existing investments after adopting ASU No. 2014-01. The Company expects future investments to meet the criteria required for the proportional amortization method and plans to make such an accounting policy election. There were no new investments being amortized since the adoption of ASU No. 2014-01 on January 1, 2015, and therefore, the adoption of ASU No. 2014-01 did not have a material impact on the Company's Consolidated Financial Statements. In January 2014, the FASB issued ASU No. 2014-04, "Reclassification of Residential Real Estate Collateralized Consumer Mortgage Loans upon Foreclosure." The objective of this guidance is to clarify when an in substance repossession or foreclosure occurs, that is, when a creditor should be considered to have received physical possession of residential real estate property collateralizing a consumer mortgage loan such that the loan receivable should be derecognized and the real estate property recognized. ASU No. 2014-04 states that an in substance repossession or foreclosure occurs, and a creditor is considered to have received physical possession of residential real estate property collateralizing a consumer mortgage loan, upon either: (1) the creditor obtaining legal title to the residential real estate property upon completion of a foreclosure; or (2) the borrower conveying all interest in the residential real estate property to the creditor to satisfy that loan through completion of a deed in lieu of foreclosure or through a similar legal agreement. Additionally, ASU No. 2014-04 requires interim and annual disclosure of both: (1) the amount of foreclosed residential real estate property held by the creditor; and (2) the recorded investment in consumer mortgage loans collateralized by residential real estate property that are in the process of foreclosure according to local requirements of the applicable jurisdiction. The Company adopted ASU No. 2014-04 effective January 1, 2015. The adoption of ASU No. 2014-04 did not have a material impact on the Company's Consolidated Financial Statements. In June 2014, the FASB issued ASU No. 2014-11, "Repurchase-to-Maturity Transactions, Repurchase Financings, and Disclosures." The new guidance aligns the accounting for repurchase-to-maturity transactions and repurchase agreements executed as repurchase financings with the accounting for other typical repurchase agreements. Going forward, these transactions would all be accounted for as secured borrowings. The guidance eliminates sale accounting for repurchase-to-maturity transactions and supersedes the guidance under which a transfer of a financial asset and a contemporaneous repurchase financing could be accounted for on a combined basis as a forward agreement, which has resulted in outcomes referred to as off-balance-sheet accounting. The amendments in the ASU require a new disclosure for transactions economically similar to repurchase agreements in which the transferor retains substantially all of the exposure to the economic return on the transferred financial assets throughout the term of the transaction. The amendments in the ASU also require expanded disclosures, effective June 30, 2015, about the nature of collateral pledged in repurchase agreements and similar transactions accounted for as secured borrowings (see Note 19 (Balance Sheet Offsetting)). The Company adopted the amendments in this ASU effective January 1, 2015. As of December 31, 2015 , all of the Company's repurchase agreements were typical in nature (i.e., not repurchase-to-maturity transactions or repurchase agreements executed as a repurchase financing) and are accounted for as secured borrowings. As such, the adoption of ASU No. 2014-11 did not have a material impact on the Company's Consolidated Financial Statements. In June 2014, the FASB issued ASU No. 2014-12, "Accounting for Share-Based Payments When the Terms of an Award Provide That a Performance Target Could Be Achieved after the Requisite Service Period." The amendments in the ASU require that a performance target that affects vesting and that could be achieved after the requisite service period be treated as a performance condition. A reporting entity should apply existing guidance in Topic 718, Compensation - Stock Compensation, as it relates to awards with performance conditions that affect vesting to account for such awards. The performance target should not be reflected in estimating the grant-date fair value of the award. However, compensation cost should be recognized in the period in which it becomes probable that the performance target will be achieved and should represent the compensation cost attributable to the period(s) for which the requisite service has already been rendered. If the performance target becomes probable of being achieved before the end of the requisite service period, the remaining unrecognized compensation cost should be recognized prospectively over the remaining requisite service period. The total amount of compensation cost recognized during and after the requisite service period should reflect the number of awards that are expected to vest and should be adjusted to reflect those awards that ultimately vest. The requisite service period ends when the employee can cease rendering service and still be eligible to vest in the award if the performance target is achieved. Entities may apply the amendments in this ASU either: (1) prospectively to all awards granted or modified after the effective date; or (2) retrospectively to all awards with performance targets that are outstanding as of the beginning of the earliest annual period presented in the financial statements and to all new or modified awards thereafter. The Company adopted ASU No. 2014-12 effective January 1, 2015. As of December 31, 2015 , the Company did not have any share-based payment awards that included performance targets that could be achieved after the requisite service period. As such, the adoption of ASU No. 2014-12 did not have a material impact on the Company's Consolidated Financial Statements. In August 2014, the FASB issued ASU No. 2014-14, “Classification of Certain Government-Guaranteed Mortgage Loans upon Foreclosure.” The objective of this guidance is to reduce diversity in practice related to how creditors classify government-guaranteed mortgage loans, including FHA and VA guaranteed loans, upon foreclosure. Some creditors reclassify those loans to real estate consistent with other foreclosed loans that do not have guarantees; others reclassify the loans to other receivables. The amendments in this guidance require that a mortgage loan be derecognized and that a separate other receivable be recognized upon foreclosure if the following conditions are met: (1) the loan has a government guarantee that is not separable from the loan before foreclosure; (2) at the time of foreclosure, the creditor has the intent to convey the real estate property to the guarantor and make a claim on the guarantee, and the creditor has the ability to recover under that claim; and (3) at the time of foreclosure, any amount of the claim that is determined on the basis of the fair value of the real estate is fixed. Upon foreclosure, the separate other receivable should be measured based on the amount of the loan balance (principal and interest) expected to be recovered from the guarantor. The Company adopted ASU No. 2014-14 effective January 1, 2015. The adoption of ASU No. 2014-14 did not have a material impact on the Company's Consolidated Financial Statements. 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 comprised 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 defers the effective date by one year (i.e., interim and annual reporting periods beginning after December 15, 2017). Early adoption is permitted, but not before the original effective date (i.e., interim and annual reporting periods beginning after December 15, 2016). 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. The Company is currently evaluating the provisions of ASU No. 2014-09 and will be closely monitoring developments and additional guidance to determine the potential impact the new standard will have on the Company's Consolidated Financial Statements. In February 2015, the FASB issued ASU No. 2015-02, “Amendments to the Consolidation Analysis.” This ASU affects reporting entities that are required to evaluate whether they should consolidate certain legal entities. Specifically, the amendments: (1) modify the evaluation of whether limited partnerships and similar legal entities are variable interest entities (“VIEs”) or voting interest entities; (2) eliminate the presumption that a general partner should consolidate a limited partnership; (3) affect the consolidation analysis of reporting entities that are involved with VIEs, particularly those that have fee arrangements and related party relationships; and (4) provide a scope exception from consolidation guidance for reporting entities with interests in legal entities that are required to comply with or operate in accordance with requirements that are similar to those in Rule 2a-7 of the Investment Company Act of 1940 for registered money market funds. ASU No. 2015-02 is effective for interim and annual reporting periods beginning after December 15, 2015. The adoption of ASU No. 2015-02 did not have a material impact on the Company's Consolidated Financial Statements. In April 2015, the FASB issued ASU No. 2015-05, “Customer’s Accounting for Fees Paid in a Cloud Computing Arrangement.” This ASU provides guidance to customers about whether a cloud computing arrangement includes a software license. If a cloud computing arrangement includes a software license, the customer should account for the software license element of the arrangement consistent with the acquisition of other software licenses. If a cloud computing arrangement does not include a software license, the customer should account for the arrangement as a service contract. The new guidance does not change the accounting for a customer’s accounting for service contracts. ASU No. 2015-05 is effective for interim and annual reporting periods beginning after December 15, 2015. The Company’s current method of accounting for fees paid in a cloud computing arrangement is consistent with the accounting guidance provided by ASU No. 2015-05. Therefore, the adoption of ASU No. 2015-05 did not have a material impact on the Company's Consolidated Financial Statements. 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 is currently evaluating the provisions of ASU No. 2016-01 and will be closely monitoring developments and additional guidance to determine the potential impact the new standard will have on the Company's Consolidated Financial Statements.

Investment Securities (Tables)

Investment Securities (Tables)	12 Months Ended
	Dec. 31, 2015
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 December 31, 2015 , 2014 , and 2013 were as follows: (dollars in thousands) Amortized Gross Gross Fair December 31, 2015 Available-for-Sale: Debt Securities Issued by the U.S. Treasury and Government Agencies $ 356,260 $ 3,472 $ (838 ) $ 358,894 Debt Securities Issued by States and Political Subdivisions 709,724 22,498 (304 ) 731,918 Debt Securities Issued by Corporations 313,136 236 (4,502 ) 308,870 Mortgage-Backed Securities: Residential - Government Agencies 310,966 6,546 (1,267 ) 316,245 Residential - U.S. Government-Sponsored Enterprises 442,760 1,368 (2,264 ) 441,864 Commercial - Government Agencies 103,227 — (4,200 ) 99,027 Total Mortgage-Backed Securities 856,953 7,914 (7,731 ) 857,136 Total $ 2,236,073 $ 34,120 $ (13,375 ) $ 2,256,818 Held-to-Maturity: Debt Securities Issued by the U.S. Treasury and Government Agencies $ 489,747 $ 1,359 $ (1,139 ) $ 489,967 Debt Securities Issued by States and Political Subdivisions 245,980 17,114 — 263,094 Debt Securities Issued by Corporations 151,301 368 (2,041 ) 149,628 Mortgage-Backed Securities: Residential - Government Agencies 2,191,138 27,893 (19,067 ) 2,199,964 Residential - U.S. Government-Sponsored Enterprises 647,762 1,656 (2,616 ) 646,802 Commercial - Government Agencies 256,808 2,381 (2,232 ) 256,957 Total Mortgage-Backed Securities 3,095,708 31,930 (23,915 ) 3,103,723 Total $ 3,982,736 $ 50,771 $ (27,095 ) $ 4,006,412 December 31, 2014 Available-for-Sale: Debt Securities Issued by the U.S. Treasury and Government Agencies $ 325,365 $ 5,933 $ (40 ) $ 331,258 Debt Securities Issued by States and Political Subdivisions 723,474 21,941 (1,445 ) 743,970 Debt Securities Issued by Corporations 298,272 546 (3,985 ) 294,833 Mortgage-Backed Securities: Residential - Government Agencies 452,493 10,986 (1,043 ) 462,436 Residential - U.S. Government-Sponsored Enterprises 276,390 2,262 (191 ) 278,461 Commercial - Government Agencies 186,813 — (8,581 ) 178,232 Total Mortgage-Backed Securities 915,696 13,248 (9,815 ) 919,129 Total $ 2,262,807 $ 41,668 $ (15,285 ) $ 2,289,190 Held-to-Maturity: Debt Securities Issued by the U.S. Treasury and Government Agencies $ 498,767 $ 2,008 $ (1,159 ) $ 499,616 Debt Securities Issued by States and Political Subdivisions 249,559 15,459 — 265,018 Debt Securities Issued by Corporations 166,686 109 (3,442 ) 163,353 Mortgage-Backed Securities: Residential - Government Agencies 2,862,369 45,407 (20,636 ) 2,887,140 Residential - U.S. Government-Sponsored Enterprises 379,365 3,635 (15 ) 382,985 Commercial - Government Agencies 309,933 241 (3,791 ) 306,383 Total Mortgage-Backed Securities 3,551,667 49,283 (24,442 ) 3,576,508 Total $ 4,466,679 $ 66,859 $ (29,043 ) $ 4,504,495 December 31, 2013 Available-for-Sale: Debt Securities Issued by the U.S. Treasury and Government Agencies $ 390,873 $ 6,640 $ (234 ) $ 397,279 Debt Securities Issued by States and Political Subdivisions 691,861 8,396 (13,455 ) 686,802 Debt Securities Issued by Corporations 280,172 1,165 (7,836 ) 273,501 Mortgage-Backed Securities: Residential - Government Agencies 641,227 13,816 (1,849 ) 653,194 Residential - U.S. Government-Sponsored Enterprises 21,865 1,403 — 23,268 Commercial - Government Agencies 219,859 — (10,206 ) 209,653 Total Mortgage-Backed Securities 882,951 15,219 (12,055 ) 886,115 Total $ 2,245,857 $ 31,420 $ (33,580 ) $ 2,243,697 Held-to-Maturity: Debt Securities Issued by the U.S. Treasury and Government Agencies $ 433,987 $ 3,045 $ (3,667 ) $ 433,365 Debt Securities Issued by States and Political Subdivisions 253,039 817 (133 ) 253,723 Debt Securities Issued by Corporations 190,181 — (5,708 ) 184,473 Mortgage-Backed Securities: Residential - Government Agencies 3,523,343 31,786 (66,572 ) 3,488,557 Residential - U.S. Government-Sponsored Enterprises 21,602 1,423 — 23,025 Commercial - Government Agencies 322,367 — (7,923 ) 314,444 Total Mortgage-Backed Securities 3,867,312 33,209 (74,495 ) 3,826,026 Total $ 4,744,519 $ 37,071 $ (84,003 ) $ 4,697,587
Analysis of the contractual maturities of investment securities	The table below presents an analysis of the contractual maturities of the Company's investment securities as of December 31, 2015 . 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 Fair Value Available-for-Sale: Due in One Year or Less $ 69,889 $ 70,173 Due After One Year Through Five Years 474,444 477,064 Due After Five Years Through Ten Years 408,341 419,001 Due After Ten Years 70,732 75,096 1,023,406 1,041,334 Debt Securities Issued by Government Agencies 355,714 358,348 Mortgage-Backed Securities: Residential - Government Agencies 310,966 316,245 Residential - U.S. Government-Sponsored Enterprises 442,760 441,864 Commercial - Government Agencies 103,227 99,027 Total Mortgage-Backed Securities 856,953 857,136 Total $ 2,236,073 $ 2,256,818 Held-to-Maturity: Due After One Year Through Five Years $ 522,433 $ 523,945 Due After Five Years Through Ten Years 292,951 301,459 Due After Ten Years 71,644 77,285 887,028 902,689 Mortgage-Backed Securities: Residential - Government Agencies 2,191,138 2,199,964 Residential - U.S. Government-Sponsored Enterprises 647,762 646,802 Commercial - Government Agencies 256,808 256,957 Total Mortgage-Backed Securities 3,095,708 3,103,723 Total $ 3,982,736 $ 4,006,412
Gross gains and losses from sale of investment securities	gains and losses from the sales of investment securities for the years ended December 31, 2015 , 2014 , and 2013 . (dollars in thousands) 2015 2014 2013 Gross Gains on Sales of Investment Securities $ 11,640 $ 8,063 $ — Gross Losses on Sales of Investment Securities (1,480 ) — — Net Gains on Sales of Investment Securities $ 10,160 $ 8,063 $ —
Schedule of investment securities in an unrealized loss position	The Company's investment securities in an unrealized loss position, segregated by continuous length of impairment, were as follows: Less Than 12 Months 12 Months or Longer Total (dollars in thousands) Fair Value Gross Fair Value Gross Fair Value Gross December 31, 2015 Available-for-Sales: Debt Securities Issued by the U.S. Treasury and Government Agencies $ 144,260 $ (822 ) $ 5,452 $ (16 ) $ 149,712 $ (838 ) Debt Securities Issued by States and Political Subdivisions 72,248 (252 ) 6,798 (52 ) 79,046 (304 ) Debt Securities Issued by Corporations 101,269 (1,747 ) 162,304 (2,755 ) 263,573 (4,502 ) Mortgage-Backed Securities: Residential - Government Agencies 30,679 (130 ) 9,117 (1,137 ) 39,796 (1,267 ) Residential - U.S. Government-Sponsored Enterprises 346,603 (2,264 ) — — 346,603 (2,264 ) Commercial - Government Agencies — — 99,026 (4,200 ) 99,026 (4,200 ) Total Mortgage-Backed Securities 377,282 (2,394 ) 108,143 (5,337 ) 485,425 (7,731 ) Total $ 695,059 $ (5,215 ) $ 282,697 $ (8,160 ) $ 977,756 $ (13,375 ) Held-to-Maturity: Debt Securities Issued by the U.S. Treasury and Government Agencies $ 264,747 $ (1,139 ) $ — $ — $ 264,747 $ (1,139 ) Debt Securities Issued by Corporations 28,218 (66 ) 71,208 (1,975 ) 99,426 (2,041 ) Mortgage-Backed Securities: Residential - Government Agencies 562,502 (5,828 ) 414,207 (13,239 ) 976,709 (19,067 ) Residential - U.S. Government-Sponsored Enterprises 450,147 (2,616 ) — — 450,147 (2,616 ) Commercial - Government Agencies 74,040 (958 ) 52,207 (1,274 ) 126,247 (2,232 ) Total Mortgage-Backed Securities 1,086,689 (9,402 ) 466,414 (14,513 ) 1,553,103 (23,915 ) Total $ 1,379,654 $ (10,607 ) $ 537,622 $ (16,488 ) $ 1,917,276 $ (27,095 ) December 31, 2014 Available-for-Sales: Debt Securities Issued by the U.S. Treasury and Government Agencies $ 1,729 $ (2 ) $ 5,546 $ (38 ) $ 7,275 $ (40 ) Debt Securities Issued by States and Political Subdivisions 78,068 (305 ) 94,543 (1,140 ) 172,611 (1,445 ) Debt Securities Issued by Corporations 73,829 (1,171 ) 180,335 (2,814 ) 254,164 (3,985 ) Mortgage-Backed Securities: Residential - Government Agencies 3,025 (8 ) 12,215 (1,035 ) 15,240 (1,043 ) Residential - U.S. Government-Sponsored Enterprises 103,824 (191 ) — — 103,824 (191 ) Commercial - Government Agencies — — 178,232 (8,581 ) 178,232 (8,581 ) Total Mortgage-Backed Securities 106,849 (199 ) 190,447 (9,616 ) 297,296 (9,815 ) Total $ 260,475 $ (1,677 ) $ 470,871 $ (13,608 ) $ 731,346 $ (15,285 ) Held-to-Maturity: Debt Securities Issued by the U.S. Treasury $ 70,016 $ (134 ) $ 144,222 $ (1,025 ) $ 214,238 $ (1,159 ) Debt Securities Issued by Corporations 46,196 (349 ) 82,109 (3,093 ) 128,305 (3,442 ) Mortgage-Backed Securities: Residential - Government Agencies 280,967 (1,207 ) 845,911 (19,429 ) 1,126,878 (20,636 ) Residential - U.S. Government-Sponsored Enterprises 45,754 (15 ) — — 45,754 (15 ) Commercial - Government Agencies 124,594 (179 ) 171,091 (3,612 ) 295,685 (3,791 ) Total Mortgage-Backed Securities 451,315 (1,401 ) 1,017,002 (23,041 ) 1,468,317 (24,442 ) Total $ 567,527 $ (1,884 ) $ 1,243,333 $ (27,159 ) $ 1,810,860 $ (29,043 )
Interest income from taxable and non-taxable investment securities.	Interest income from taxable and non-taxable investment securities for the years ended December 31, 2015 , 2014 , and 2013 were as follows: Year Ended December 31, (dollars in thousands) 2015 2014 2013 Taxable $ 109,912 $ 127,128 $ 125,379 Non-Taxable 21,230 21,207 18,253 Total Interest Income from Investment Securities $ 131,142 $ 148,335 $ 143,632
Schedule of carrying value of company's federal home loan bank and federal reserve bank	As of December 31, 2015 and 2014 the carrying value of the Company’s Federal Home Loan Bank of Des Moines (“FHLB Des Moines”) stock and Federal Reserve Bank stock was as follows: December 31, (dollars in thousands) 2015 2014 Federal Home Loan Bank Stock $ 19,000 $ 47,075 Federal Reserve Bank Stock 19,836 19,299 Total $ 38,836 $ 66,374

Loans and Leases and the Allo33

Loans and Leases and the Allowance for Loan and Lease Losses (Tables)	12 Months Ended
	Dec. 31, 2015
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 December 31, 2015 and 2014 : December 31, (dollars in thousands) 2015 2014 Commercial Commercial and Industrial $ 1,115,168 $ 1,055,243 Commercial Mortgage 1,677,147 1,437,513 Construction 156,660 109,183 Lease Financing 204,877 226,189 Total Commercial 3,153,852 2,828,128 Consumer Residential Mortgage 2,925,605 2,571,090 Home Equity 1,069,400 866,688 Automobile 381,735 323,848 Other 1 348,393 307,835 Total Consumer 4,725,133 4,069,461 Total Loans and Leases $ 7,878,985 $ 6,897,589 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	The following presents by portfolio segment, the activity in the Allowance for the years ended December 31, 2015 , 2014 , and 2013 . 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 December 31, 2015 , 2014 , and 2013 . (dollars in thousands) Commercial Consumer Total For the Year Ended December 31, 2015 Allowance for Loan and Lease Losses: Balance at Beginning of Period $ 64,551 $ 44,137 $ 108,688 Loans and Leases Charged-Off (954 ) (15,485 ) (16,439 ) Recoveries on Loans and Leases Previously Charged-Off 2,173 7,458 9,631 Net Loans and Leases Recovered (Charged-Off) 1,219 (8,027 ) (6,808 ) Provision for Credit Losses (5,056 ) 6,056 1,000 Balance at End of Period $ 60,714 $ 42,166 $ 102,880 As of December 31, 2015 Allowance for Loan and Lease Losses: Individually Evaluated for Impairment $ 205 $ 3,373 $ 3,578 Collectively Evaluated for Impairment 60,509 38,793 99,302 Total $ 60,714 $ 42,166 $ 102,880 Recorded Investment in Loans and Leases: Individually Evaluated for Impairment $ 27,950 $ 38,747 $ 66,697 Collectively Evaluated for Impairment 3,125,902 4,686,386 7,812,288 Total $ 3,153,852 $ 4,725,133 $ 7,878,985 For the Year Ended December 31, 2014 Allowance for Loan and Lease Losses: Balance at Beginning of Period $ 71,446 $ 44,008 $ 115,454 Loans and Leases Charged-Off (2,068 ) (13,371 ) (15,439 ) Recoveries on Loans and Leases Previously Charged-Off 4,721 8,816 13,537 Net Loans and Leases Recovered (Charged-Off) 2,653 (4,555 ) (1,902 ) Provision for Credit Losses (9,548 ) 4,684 (4,864 ) Balance at End of Period $ 64,551 $ 44,137 $ 108,688 As of December 31, 2014 Allowance for Loan and Lease Losses: Individually Evaluated for Impairment $ 2,387 $ 3,561 $ 5,948 Collectively Evaluated for Impairment 62,164 40,576 102,740 Total $ 64,551 $ 44,137 $ 108,688 Recorded Investment in Loans and Leases: Individually Evaluated for Impairment $ 25,116 $ 39,631 $ 64,747 Collectively Evaluated for Impairment 2,803,012 4,029,830 6,832,842 Total $ 2,828,128 $ 4,069,461 $ 6,897,589 For the Year Ended December 31, 2013 Allowance for Loan and Lease Losses: Balance at Beginning of Period $ 72,704 $ 56,153 $ 128,857 Loans and Leases Charged-Off (8,099 ) (17,021 ) (25,120 ) Recoveries on Loans and Leases Previously Charged-Off 2,644 9,073 11,717 Net Loans and Leases Charged-Off (5,455 ) (7,948 ) (13,403 ) Provision for Credit Losses 4,197 (4,197 ) — Balance at End of Period $ 71,446 $ 44,008 $ 115,454 As of December 31, 2013 Allowance for Loan and Lease Losses: Individually Evaluated for Impairment $ 9,054 $ 3,722 $ 12,776 Collectively Evaluated for Impairment 62,392 40,286 102,678 Total $ 71,446 $ 44,008 $ 115,454 Recorded Investment in Loans and Leases: Individually Evaluated for Impairment $ 38,469 $ 38,646 $ 77,115 Collectively Evaluated for Impairment 2,489,964 3,528,308 6,018,272 Total $ 2,528,433 $ 3,566,954 $ 6,095,387
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 December 31, 2015 and 2014 . December 31, 2015 (dollars in thousands) Commercial Commercial Construction Lease Total Pass $ 1,059,475 $ 1,591,696 $ 154,976 $ 204,348 $ 3,010,495 Special Mention 28,076 43,674 80 76 71,906 Classified 27,617 41,777 1,604 453 71,451 Total $ 1,115,168 $ 1,677,147 $ 156,660 $ 204,877 $ 3,153,852 (dollars in thousands) Residential Home Automobile Other 1 Total Pass $ 2,910,667 $ 1,064,253 $ 381,420 $ 347,710 $ 4,704,050 Classified 14,938 5,147 315 683 21,083 Total $ 2,925,605 $ 1,069,400 $ 381,735 $ 348,393 $ 4,725,133 Total Recorded Investment in Loans and Leases $ 7,878,985 December 31, 2014 (dollars in thousands) Commercial Commercial Construction Lease Total Pass $ 1,001,474 $ 1,358,812 $ 107,381 $ 225,783 $ 2,693,450 Special Mention 17,364 45,082 — 17 62,463 Classified 36,405 33,619 1,802 389 72,215 Total $ 1,055,243 $ 1,437,513 $ 109,183 $ 226,189 $ 2,828,128 (dollars in thousands) Residential Home Automobile Other 1 Total Pass $ 2,556,140 $ 862,258 $ 323,232 $ 307,123 $ 4,048,753 Classified 14,950 4,430 616 712 20,708 Total $ 2,571,090 $ 866,688 $ 323,848 $ 307,835 $ 4,069,461 Total Recorded Investment in Loans and Leases $ 6,897,589 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 December 31, 2015 and 2014 . (dollars in thousands) 30 - 59 60 - 89 Past Due Non- Total Current Total Loans Non-Accrual 2 As of December 31, 2015 Commercial Commercial and Industrial $ 1,118 $ 359 $ — $ 5,829 $ 7,306 $ 1,107,862 $ 1,115,168 $ 452 Commercial Mortgage 1,245 27 — 3,469 4,741 1,672,406 1,677,147 2,890 Construction 2,120 — — — 2,120 154,540 156,660 — Lease Financing — — — — — 204,877 204,877 — Total Commercial 4,483 386 0 9,298 14,167 3,139,685 3,153,852 3,342 Consumer Residential Mortgage 7,148 3,993 4,453 14,598 30,192 2,895,413 2,925,605 2,056 Home Equity 3,856 1,906 1,710 4,081 11,553 1,057,847 1,069,400 1,710 Automobile 8,103 1,803 315 — 10,221 371,514 381,735 — Other 1 2,281 1,448 1,096 — 4,825 343,568 348,393 — Total Consumer 21,388 9,150 7,574 18,679 56,791 4,668,342 4,725,133 3,766 Total $ 25,871 $ 9,536 $ 7,574 $ 27,977 $ 70,958 $ 7,808,027 $ 7,878,985 $ 7,108 As of December 31, 2014 Commercial Commercial and Industrial $ 992 $ 356 $ 2 $ 9,088 $ 10,438 $ 1,044,805 $ 1,055,243 $ 7,819 Commercial Mortgage 458 — — 745 1,203 1,436,310 1,437,513 — Construction — — — — — 109,183 109,183 — Lease Financing — — — — — 226,189 226,189 — Total Commercial 1,450 356 2 9,833 11,641 2,816,487 2,828,128 7,819 Consumer Residential Mortgage 4,907 2,107 4,506 14,841 26,361 2,544,729 2,571,090 632 Home Equity 3,461 2,661 2,596 3,097 11,815 854,873 866,688 375 Automobile 7,862 1,483 616 — 9,961 313,887 323,848 — Other 1 2,416 1,049 941 — 4,406 303,429 307,835 — Total Consumer 18,646 7,300 8,659 17,938 52,543 4,016,918 4,069,461 1,007 Total $ 20,096 $ 7,656 $ 8,661 $ 27,771 $ 64,184 $ 6,833,405 $ 6,897,589 $ 8,826 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 as of the balance sheet date	The following presents by class, information related to impaired loans as of December 31, 2015 and 2014 . (dollars in thousands) Recorded Unpaid Related December 31, 2015 Impaired Loans with No Related Allowance Recorded: Commercial Commercial and Industrial $ 14,650 $ 28,212 $ — Commercial Mortgage 10,407 13,907 — Construction 1,604 1,604 — Total Commercial 26,661 43,723 — Total Impaired Loans with No Related Allowance Recorded $ 26,661 $ 43,723 $ — Impaired Loans with an Allowance Recorded: Commercial Commercial and Industrial $ 1,289 $ 1,289 $ 205 Total Commercial 1,289 1,289 205 Consumer Residential Mortgage 28,981 34,694 3,171 Home Equity 1,089 1,089 12 Automobile 7,012 7,012 143 Other 1 1,665 1,665 47 Total Consumer 38,747 44,460 3,373 Total Impaired Loans with an Allowance Recorded $ 40,036 $ 45,749 $ 3,578 Impaired Loans: Commercial $ 27,950 $ 45,012 $ 205 Consumer 38,747 44,460 3,373 Total Impaired Loans $ 66,697 $ 89,472 $ 3,578 December 31, 2014 Impaired Loans with No Related Allowance Recorded: Commercial Commercial and Industrial $ 9,763 $ 15,013 $ — Commercial Mortgage 6,480 6,480 — Construction 1,689 1,689 — Total Commercial 17,932 23,182 — Total Impaired Loans with No Related Allowance Recorded $ 17,932 $ 23,182 $ — Impaired Loans with an Allowance Recorded: Commercial Commercial and Industrial $ 7,184 $ 13,784 $ 2,387 Total Commercial 7,184 13,784 2,387 Consumer Residential Mortgage 32,331 37,989 3,445 Home Equity 1,012 1,012 16 Automobile 5,375 5,375 66 Other 1 913 913 34 Total Consumer 39,631 45,289 3,561 Total Impaired Loans with an Allowance Recorded $ 46,815 $ 59,073 $ 5,948 Impaired Loans: Commercial $ 25,116 $ 36,966 $ 2,387 Consumer 39,631 45,289 3,561 Total Impaired Loans $ 64,747 $ 82,255 $ 5,948 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 years ended December 31, 2015 and 2014 . Year Ended Year Ended (dollars in thousands) Average Interest Average Interest Impaired Loans with No Related Allowance Recorded: Commercial Commercial and Industrial $ 12,589 $ 406 $ 11,167 $ 318 Commercial Mortgage 7,521 268 8,529 225 Construction 1,647 106 1,570 93 Total Commercial 21,757 780 21,266 636 Consumer Other 1 — — 6 — Total Consumer — — 6 — Total Impaired Loans with No Related Allowance Recorded $ 21,757 $ 780 $ 21,272 $ 636 Impaired Loans with an Allowance Recorded: Commercial Commercial and Industrial $ 5,379 $ 98 $ 8,045 $ 118 Total Commercial 5,379 98 8,045 118 Consumer Residential Mortgage 30,895 1,133 31,998 1,028 Home Equity 1,137 42 964 34 Automobile 5,992 432 5,263 433 Other 1 1,198 111 560 49 Total Consumer 39,222 1,718 38,785 1,544 Total Impaired Loans with an Allowance Recorded $ 44,601 $ 1,816 $ 46,830 $ 1,662 Impaired Loans: Commercial $ 27,136 $ 878 $ 29,311 $ 754 Consumer 39,222 1,718 38,791 1,544 Total Impaired Loans $ 66,358 $ 2,596 $ 68,102 $ 2,298 1 Comprised of other revolving credit and installment financing.
Schedule of loans modified as a TDR	The following presents by class, information related to loans modified in a TDR during the years ended December 31, 2015 and 2014 . Loans Modified as a TDR for the Loans Modified as a TDR for the Troubled Debt Restructurings (dollars in thousands ) Number of Recorded 1 Increase in Number of Recorded 1 Increase in Commercial Commercial and Industrial 30 $ 5,414 $ 1 19 $ 10,263 $ 2,360 Commercial Mortgage 4 4,307 — 1 315 — Total Commercial 34 9,721 1 20 10,578 2,360 Consumer Residential Mortgage 13 4,255 99 17 6,329 278 Home Equity 3 367 4 2 156 2 Automobile 170 3,996 81 131 2,576 32 Other 2 168 1,099 31 84 666 25 Total Consumer 354 9,717 215 234 9,727 337 Total 388 $ 19,438 $ 216 254 $ 20,305 $ 2,697 1 The period end balances reflect all partial 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.
Schedule of loans modified in a TDR that defaulted during the year, and within twelve months of their modification date by class	The following presents by class, loans modified in a TDR that defaulted during the year ended December 31, 2015 and 2014 , 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. Year Ended December 31, 2015 Year Ended December 31, 2014 TDRs that Defaulted During the Period, (dollars in thousands) Number of Recorded 1 Number of Recorded 1 Commercial Commercial and Industrial 2 $ 4,924 4 $ 728 Total Commercial 2 4,924 4 728 Consumer Residential Mortgage 4 1,449 2 506 Automobile 10 220 6 77 Other 2 21 118 6 48 Total Consumer 35 1,787 14 631 Total 37 $ 6,711 18 $ 1,359 1 The period end balances reflect all partial paydowns and charge-offs since the modification date. TDRs fully paid off, charged off, or foreclosed upon by period end are not included.

Mortgage Servicing Rights (Tabl

Mortgage Servicing Rights (Tables)	12 Months Ended
	Dec. 31, 2015
Transfers and Servicing of Financial Assets [Abstract]
Analysis of mortgage servicing rights accounted for under the fair value measurement method	For the years ended December 31, 2015 , 2014 , and 2013 , the change in the fair value of the Company's mortgage servicing rights accounted for under the fair value measurement method was as follows: (dollars in thousands) 2015 2014 2013 Balance at Beginning of Year $ 2,604 $ 3,826 $ 4,761 Changes in Fair Value: Due to Change in Valuation Assumptions 1 (251 ) (869 ) 127 Due to Payoffs (383 ) (353 ) (1,062 ) Total Changes in Fair Value of Mortgage Servicing Rights (634 ) (1,222 ) (935 ) Balance at End of Year $ 1,970 $ 2,604 $ 3,826 1 Principally represents changes in discount rates and loan repayment rate assumptions, mostly due to changes in interest rates.
Analysis of mortgage servicing rights accounted for under the amortization method	For the years ended December 31, 2015 , 2014 , and 2013 , the change in the carrying value of the Company's mortgage servicing rights accounted for under the amortization method was as follows: (dollars in thousands) 2015 2014 2013 Balance at Beginning of Year $ 22,091 $ 24,297 $ 20,479 Servicing Rights that Resulted From Asset Transfers 1,737 747 6,351 Amortization (2,832 ) (2,896 ) (2,533 ) Valuation Allowance Provision 36 (57 ) — Balance at End of Year $ 21,032 $ 22,091 $ 24,297 Valuation Allowance: Balance at Beginning of Year $ (57 ) $ — $ — Valuation Allowance Provision 36 (57 ) — Balance at End of Year $ (21 ) $ (57 ) $ — Fair Value: Balance at Beginning of Year $ 22,837 $ 30,100 $ 23,143 Balance at End of Year $ 24,804 $ 22,837 $ 30,100
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 December 31, 2015 and 2014 were as follows: December 31, 2015 2014 Weighted-Average Constant Prepayment Rate 1 9.10 % 11.62 % Weighted-Average Life (in years) 7.40 6.28 Weighted-Average Note Rate 4.23 % 4.28 % Weighted-Average Discount Rate 2 9.38 % 10.61 % 1 Represents annualized loan repayment rate assumption. 2 Derived from multiple interest rate scenarios that incorporate a spread to the London Interbank Offered Rate swap 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 December 31, 2015 and 2014 is presented in the following table. December 31, (dollars in thousands) 2015 2014 Constant Prepayment Rate Decrease in fair value from 25 basis points ("bps") adverse change $ (285 ) $ (265 ) Decrease in fair value from 50 bps adverse change (566 ) (524 ) Discount Rate Decrease in fair value from 25 bps adverse change (292 ) (250 ) Decrease in fair value from 50 bps adverse change (577 ) (495 )

Premises and Equipment (Tables)

Premises and Equipment (Tables)	12 Months Ended
	Dec. 31, 2015
Property, Plant and Equipment [Abstract]
Schedule of premises and equipment	The components of the Company's premises and equipment as of December 31, 2015 and 2014 were as follows: (dollars in thousands) Cost Accumulated Net Book Value December 31, 2015 Premises $ 322,552 $ (238,912 ) $ 83,640 Equipment 111,071 (86,176 ) 24,895 Capital Leases 6,593 (3,929 ) 2,664 Total $ 440,216 $ (329,017 ) $ 111,199 December 31, 2014 Premises $ 322,536 $ (235,464 ) $ 87,072 Equipment 106,623 (86,577 ) 20,046 Capital Leases 6,593 (3,857 ) 2,736 Total $ 435,752 $ (325,898 ) $ 109,854

Other Assets (Tables)

Other Assets (Tables)	12 Months Ended
	Dec. 31, 2015
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Schedule of other assets	The components of the Company's other assets as of December 31, 2015 and 2014 were as follows: December 31, (dollars in thousands) 2015 2014 Federal Home Loan Bank and Federal Reserve Bank Stock $ 38,836 $ 66,374 Derivative Financial Instruments 13,967 16,515 Low-Income Housing and Other Equity Investments 79,033 77,495 Deferred Compensation Plan Assets 20,262 18,794 Prepaid Expenses 8,262 7,787 Accounts Receivable 12,539 13,405 Other 26,493 25,518 Total $ 199,392 $ 225,888

Deposits (Tables)

Deposits (Tables)	12 Months Ended
	Dec. 31, 2015
Deposits [Abstract]
Schedule of time deposits with contractual maturities	Time Deposits As of December 31, 2015 and 2014 , the Company's total time deposits were $1.2 billion and $1.4 billion , respectively. As of December 31, 2015 , the contractual maturities of these time deposits were as follows: (dollars in thousands) Amount 2016 $ 933,273 2017 161,913 2018 34,467 2019 15,293 2020 17,667 Thereafter 15,038 Total $ 1,177,651
Schedule of time deposits with balances of $100,000 or more with contractual maturities	The amount of time deposits with balances of $100,000 or more was $0.9 billion and $1.2 billion as of December 31, 2015 and 2014 , respectively. As of December 31, 2015 , the contractual maturities of these time deposits were as follows: (dollars in thousands) Amount Three Months or Less $ 422,466 Over Three Months through Six Months 202,100 Over Six Months through Twelve Months 164,806 Over Twelve Months 139,767 Total $ 929,139

Borrowings (Tables)

Borrowings (Tables)	12 Months Ended
	Dec. 31, 2015
Borrowings Disclosure Abstract
Schedule of details of short-term borrowings	Details of the Company's short-term borrowings (original maturity of one year or less) as of December 31, 2015 and 2014 were as follows: December 31, (dollars in thousands) 2015 2014 Funds Purchased 1 Amounts Outstanding $ 7,333 $ 8,459 Weighted-Average Interest Rate 0.14 % 0.14 % Securities Sold Under Agreements to Repurchase (short-term) 2 Amounts Outstanding $ 3,992 $ 7,700 Weighted-Average Interest Rate 0.06 % 0.10 % 1 Federal funds purchased generally mature on the next business day following the date of purchase. 2 Consists entirely of repurchase agreements with government entities. Excludes long-term repurchase agreements with government entities of $49.9 million and $80.9 million as of December 31, 2015 , and 2014 , respectively, and long-term repurchase agreements with private institutions of $575.0 million and $600.0 million as of December 31, 2015 and 2014 , respectively.

Other Debt (Tables)

Other Debt (Tables)	12 Months Ended
	Dec. 31, 2015
Debt Disclosure [Abstract]
Schedule of other debt	The Company's other debt as of December 31, 2015 and 2014 were as follows: December 31, (dollars in thousands) 2015 2014 Federal Home Loan Bank Advances $ 225,000 $ 150,000 Non-Recourse Debt 9,938 13,005 Capital Lease Obligations 10,848 10,907 Total $ 245,786 $ 173,912
Schedule of annual maturities of long-term debt, exclusive of capital lease obligations	As of December 31, 2015 , the annual maturities of the Company's other debt, exclusive of capital lease obligations, were expected to be as follows: (dollars in thousands) Amount 2016 $ 52,785 2017 — 2018 175,000 2019 — 2020 3,464 Thereafter 3,689 Total $ 234,938

Shareholders' Equity (Tables)

Shareholders' Equity (Tables)	12 Months Ended
	Dec. 31, 2015
Stockholders' Equity Note [Abstract]
Schedule of minimum required capital amounts and ratios for well capitalized institutions and the actual capital amounts and ratios for the Company and the Bank	The table below sets forth the minimum required capital amounts and ratios for well capitalized institutions and the actual capital amounts and ratios for the Company and the Bank as of December 31, 2015 and 2014 : (dollars in thousands) Well Capitalized Company Bank As of December 31, 2015: Shareholders' Equity $ 1,116,260 $ 1,036,355 Common Equity Tier 1 Capital 1 1,112,598 1,043,070 Tier 1 Capital 1 1,112,598 1,043,070 Total Capital 1 1,212,245 1,142,573 Common Equity Tier 1 Capital Ratio 1 6.5 % 13.97 % 13.12 % Tier 1 Capital Ratio 1 8 % 13.97 % 13.12 % Total Capital Ratio 1 10 % 15.22 % 14.37 % Tier 1 Leverage Ratio 1 5 % 7.26 % 6.81 % As of December 31, 2014: Shareholders' Equity $ 1,055,086 $ 975,723 Tier 1 Capital 1,039,631 974,397 Total Capital 1,128,416 1,063,085 Tier 1 Capital Ratio 6 % 14.69 % 13.78 % Total Capital Ratio 10 % 15.94 % 15.04 % Tier 1 Leverage Ratio 5 % 7.13 % 6.69 %
Components of other comprehensive income	The following table presents the components of other comprehensive income (loss), net of tax: (dollars in thousands) Before Tax Tax Effect Net of Tax Year Ended December 31, 2015 Net Unrealized Gains (Losses) on Investment Securities: Net Unrealized Gains (Losses) Arising During the Period $ (5,448 ) $ (2,138 ) $ (3,310 ) Amounts Reclassified from Accumulated Other Comprehensive Income (Loss) that (Increase) Decrease Net Income: (Gain) Loss on Sale (190 ) (75 ) (115 ) Amortization of Unrealized Holding (Gains) Losses on Held-to-Maturity Securities 1 2,136 836 1,300 Net Unrealized Gains (Losses) on Investment Securities (3,502 ) (1,377 ) (2,125 ) Defined Benefit Plans: Net Actuarial Gains (Losses) Arising During the Period 7,335 2,869 4,466 Amortization of Net Actuarial Losses (Gains) 1,624 641 983 Amortization of Prior Service Credit (322 ) (127 ) (195 ) Defined Benefit Plans, Net 8,637 3,383 5,254 Other Comprehensive Income (Loss) $ 5,135 $ 2,006 $ 3,129 Year Ended December 31, 2014 Net Unrealized Gains (Losses) on Investment Securities: Net Unrealized Gains (Losses) Arising During the Period $ 28,609 $ 11,286 $ 17,323 Amounts Reclassified from Accumulated Other Comprehensive Income (Loss) that (Increase) Decrease Net Income: (Gain) Loss on Sale (64 ) (25 ) (39 ) Amortization of Unrealized Holding (Gains) Losses on Held-to-Maturity Securities 1 (703 ) (277 ) (426 ) Net Unrealized Gains (Losses) on Investment Securities 27,842 10,984 16,858 Defined Benefit Plans: Net Actuarial Gains (Losses) Arising During the Period (20,286 ) (8,000 ) (12,286 ) Amortization of Net Actuarial Losses (Gains) 1,256 496 760 Amortization of Prior Service Credit (322 ) (127 ) (195 ) Defined Benefit Plans, Net (19,352 ) (7,631 ) (11,721 ) Other Comprehensive Income (Loss) $ 8,490 $ 3,353 $ 5,137 Year Ended December 31, 2013 Net Unrealized Gains (Losses) on Investment Securities: Net Unrealized Gains (Losses) Arising During the Period $ (105,842 ) $ (41,715 ) $ (64,127 ) 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 (8,386 ) (3,307 ) (5,079 ) Net Unrealized Gains (Losses) on Investment Securities (114,228 ) (45,022 ) (69,206 ) Defined Benefit Plans: Net Actuarial Gains (Losses) Arising During the Period 12,132 4,785 7,347 Amortization of Net Actuarial Losses (Gains) 1,688 665 1,023 Amortization of Prior Service Credit (322 ) (127 ) (195 ) Defined Benefit Plans, Net 13,498 5,323 8,175 Other Comprehensive Income (Loss) $ (100,730 ) $ (39,699 ) $ (61,031 ) 1 The amount relates to the amortization/accretion of unrealized gains and losses related to the Company's reclassification of available-for-sale investment securities to the held-to-maturity category.
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: (dollars in thousands) Investment Securities-Available-For-Sale Investment Securities-Held-To-Maturities Defined Benefit Plans Accumulated Other Comprehensive Income (Loss) Year Ended December 31, 2015 Balance at Beginning of Period $ 15,984 $ (8,555 ) $ (34,115 ) $ (26,686 ) Other Comprehensive Income (Loss) Before Reclassifications (3,310 ) — 4,466 1,156 Amounts Reclassified from Accumulated Other Comprehensive Income (Loss) (115 ) 1,300 788 1,973 Total Other Comprehensive Income (Loss) (3,425 ) 1,300 5,254 3,129 Balance at End of Period $ 12,559 $ (7,255 ) $ (28,861 ) $ (23,557 ) Year Ended December 31, 2014 Balance at Beginning Period $ (1,300 ) $ (8,129 ) $ (22,394 ) $ (31,823 ) Other Comprehensive Income (Loss) Before Reclassifications 17,323 — (12,286 ) 5,037 Amounts Reclassified from Accumulated Other Comprehensive Income (Loss) (39 ) (426 ) 565 100 Total Other Comprehensive Income (Loss) 17,284 (426 ) (11,721 ) 5,137 Balance at End of Period $ 15,984 $ (8,555 ) $ (34,115 ) $ (26,686 ) Year Ended December 31, 2013 Balance at Beginning Period $ 45,996 $ 13,781 $ (30,569 ) $ 29,208 Other Comprehensive Income (Loss) Before Reclassifications (47,296 ) (16,831 ) 7,347 (56,780 ) Amounts Reclassified from Accumulated Other Comprehensive Income (Loss) — (5,079 ) 828 (4,251 ) Total Other Comprehensive Income (Loss) (47,296 ) (21,910 ) 8,175 (61,031 ) Balance at End of Period $ (1,300 ) $ (8,129 ) $ (22,394 ) $ (31,823 )
Reclassification out of accumulated other comprehensive income	The following table presents the amounts reclassified out of each component of accumulated other comprehensive income (loss): 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 (dollars in thousands) Year Ended December 31, 2015 2014 2013 Amortization of Unrealized Holding Gains (Losses) on Investment Securities Held-to-Maturity $ (2,136 ) $ 703 $ 8,386 Interest Income 836 (277 ) (3,307 ) Provision for Income Tax (1,300 ) 426 5,079 Net of Tax Sales of Investment Securities Available-for-Sale 190 64 — Investment Securities Gains (Losses), Net (75 ) (25 ) — Provision for Income Tax 115 39 — Net of Tax Amortization of Defined Benefit Plans Items Prior Service Credit 2 322 322 322 Net Actuarial Losses 2 (1,624 ) (1,256 ) (1,688 ) (1,302 ) (934 ) (1,366 ) Total Before Tax 514 369 538 Provision for Income Tax (788 ) (565 ) (828 ) Net of Tax Total Reclassifications for the Period $ (1,973 ) $ (100 ) $ 4,251 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 14 (Employee Benefits) for additional details.

Earnings Per Share (Tables)

Earnings Per Share (Tables)	12 Months Ended
	Dec. 31, 2015
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 years ended December 31, 2015 , 2014 , and 2013 : Weighted Average Shares 2015 2014 2013 Denominator for Basic Earnings Per Share 43,217,818 43,899,208 44,380,948 Dilutive Effect of Equity Based Awards 237,059 226,248 191,777 Denominator for Diluted Earnings Per Share 43,454,877 44,125,456 44,572,725 Antidilutive Stock Options and Restricted Stock Outstanding — — 25,101

Business Segments (Tables)

Business Segments (Tables)	12 Months Ended
	Dec. 31, 2015
Segment Reporting [Abstract]
Selected business segment financial information	Selected business segment financial information as of and for the years ended December 31, 2015 , 2014 , and 2013 were as follows: (dollars in thousands) Retail Commercial Investment Treasury Consolidated Year Ended December 31, 2015 Net Interest Income $ 202,259 $ 143,944 $ 18,494 $ 29,390 $ 394,087 Provision for Credit Losses 8,033 (1,165 ) (43 ) (5,825 ) 1,000 Net Interest Income After Provision for Credit Losses 194,226 145,109 18,537 35,215 393,087 Noninterest Income 82,391 21,804 58,835 23,189 186,219 Noninterest Expense (199,572 ) (76,891 ) (57,852 ) (13,789 ) (348,104 ) Income Before Provision for Income Taxes 77,045 90,022 19,520 44,615 231,202 Provision for Income Taxes (27,330 ) (31,457 ) (7,222 ) (4,489 ) (70,498 ) Net Income $ 49,715 $ 58,565 $ 12,298 $ 40,126 $ 160,704 Total Assets as of December 31, 2015 $ 4,680,888 $ 3,099,132 $ 274,469 $ 7,400,527 $ 15,455,016 Year Ended December 31, 2014 Net Interest Income $ 178,480 $ 119,655 $ 15,238 $ 66,283 $ 379,656 Provision for Credit Losses 4,783 (2,369 ) (313 ) (6,965 ) (4,864 ) Net Interest Income After Provision for Credit Losses 173,697 122,024 15,551 73,248 384,520 Noninterest Income 79,562 23,635 57,618 19,202 180,017 Noninterest Expense (196,254 ) (66,760 ) (54,571 ) (9,314 ) (326,899 ) Income Before Provision for Income Taxes 57,005 78,899 18,598 83,136 237,638 Provision for Income Taxes (21,079 ) (26,952 ) (6,894 ) (19,671 ) (74,596 ) Net Income $ 35,926 $ 51,947 $ 11,704 $ 63,465 $ 163,042 Total Assets as of December 31, 2014 $ 4,088,878 $ 2,787,537 $ 202,645 $ 7,708,148 $ 14,787,208 Year Ended December 31, 2013 Net Interest Income $ 160,869 $ 99,733 $ 14,199 $ 84,106 $ 358,907 Provision for Credit Losses 8,565 4,918 (71 ) (13,412 ) — Net Interest Income After Provision for Credit Losses 152,304 94,815 14,270 97,518 358,907 Noninterest Income 87,493 27,488 59,336 11,906 186,223 Noninterest Expense (199,222 ) (65,189 ) (55,002 ) (11,556 ) (330,969 ) Income Before Provision for Income Taxes 40,575 57,114 18,604 97,868 214,161 Provision for Income Taxes (15,496 ) (18,877 ) (6,883 ) (22,403 ) (63,659 ) Net Income $ 25,079 $ 38,237 $ 11,721 $ 75,465 $ 150,502 Total Assets as of December 31, 2013 $ 3,627,700 $ 2,458,001 $ 189,421 $ 7,809,158 $ 14,084,280

Employee Benefits (Tables)

Employee Benefits (Tables)	12 Months Ended
	Dec. 31, 2015
Compensation and Retirement Disclosure [Abstract]
Schedule of Defined Benefit Plan Assumptions Used in Calculating Net Periodic Benefit Cost [Table Text Block]	Assumptions used to determine the net periodic benefit cost for the Company's Pension Plans and postretirement benefit plan for the years ended December 31, 2015 , 2014 , and 2013 were as follows: Pension Benefits Postretirement Benefits 2015 2014 2013 2015 2014 2013 Weighted Average Assumptions as of December 31: Discount Rate 4.25 % 5.22 % 4.29 % 4.28 % 5.22 % 4.29 % Expected Long-Term Rate of Return on Plan Assets 6.00 % 6.00 % 6.00 % — — — Health Care Cost Trend Rate — — — 7.00 % 7.20 % 7.70 %
Schedule of reconciliation of changes in the benefit obligation and the fair value of plan assets, as well as the funded status recognized in the consolidated statements of condition for the pension plans and postretirement benefit plan	The following table provides a reconciliation of changes in benefit obligation and fair value of plan assets, as well as the funded status recognized in the Company's consolidated statements of condition for the Pension Plans and postretirement benefit plan for the years ended December 31, 2015 and 2014 . Pension Benefits Postretirement Benefits (dollars in thousands) 2015 2014 2015 2014 Benefit Obligation at Beginning of Year $ 114,707 $ 98,085 $ 30,804 $ 27,296 Service Cost — — 621 586 Interest Cost 4,655 4,975 1,155 1,325 Actuarial Losses (Gains) (7,647 ) 16,954 (5,783 ) 2,674 Employer Benefits Paid 1 (5,722 ) (5,307 ) (1,490 ) (1,077 ) Benefit Obligation at End of Year $ 105,993 $ 114,707 $ 25,307 $ 30,804 Fair Value of Plan Assets at Beginning of Year $ 90,154 $ 90,535 $ — $ — Actual Return on Plan Assets (1,058 ) 4,442 — — Employer Contributions 484 484 1,490 1,077 Employer Benefits Paid 1 (5,722 ) (5,307 ) (1,490 ) (1,077 ) Fair Value of Plan Assets at End of Year $ 83,858 $ 90,154 $ — $ — Funded Status at End of Year 2 $ (22,135 ) $ (24,553 ) $ (25,307 ) $ (30,804 ) 1 Participants' contributions relative to the postretirement benefit plan were offset against employer benefits paid in the table above. Participants' contributions for postretirement benefits were $0.6 million and $0.7 million for the years ended December 31, 2015 and 2014 , respectively. 2 Amounts are recognized in Retirement Benefits Payable in the consolidated statements of condition.
Schedule of amounts recognized in accumulated other comprehensive income (loss)	The following presents the amounts recognized in the Company's accumulated other comprehensive income for the Pension Plans and postretirement benefit plan as of December 31, 2015 and 2014 . Pension Benefits Postretirement Benefits (dollars in thousands) 2015 2014 2015 2014 Amounts Recognized in Accumulated Other Net Actuarial Gains (Losses) $ (33,239 ) $ (35,254 ) $ 3,768 $ 333 Net Prior Service Credit — — 610 806 Total Amounts Recognized in Accumulated Other $ (33,239 ) $ (35,254 ) $ 4,378 $ 1,139
Schedule of components of net periodic benefit cost	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 years ended December 31, 2015 , 2014 , and 2013 . Pension Benefits Postretirement Benefits (dollars in thousands) 2015 2014 2013 2015 2014 2013 Service Cost $ — $ — $ — $ 621 $ 586 $ 670 Interest Cost 4,655 4,975 4,514 1,155 1,325 1,188 Expected Return on Plan Assets (5,222 ) (5,100 ) (5,250 ) — — — Amortization of: Prior Service Credit 1 — — — (322 ) (322 ) (322 ) Net Actuarial Losses (Gains) 1 1,713 1,408 1,688 (89 ) (152 ) — Net Periodic Benefit Cost $ 1,146 $ 1,283 $ 952 $ 1,365 $ 1,437 $ 1,536 1 Represents reclassification adjustments from accumulated other comprehensive income during the period.
Schedule of assumptions used to determine the benefit obligations/net periodic cost	Assumptions used to determine the benefit obligations as of December 31, 2015 and 2014 for the Company's Pension Plans and postretirement benefit plan were as follows: Pension Benefits Postretirement Benefits 2015 2014 2015 2014 Weighted Average Assumptions as of December 31: Discount Rate 4.70 % 4.25 % 4.74 % 4.28 % Health Care Cost Trend Rate Assumed For Next Year — — 6.70 % 7.00 %
Schedule of impact of one percent change in the health care cost trend rate assumption	A one percent change in the health care cost trend rate assumption (with all other assumptions remaining constant) would have impacted the service and interest cost components of the net periodic postretirement benefit cost and the postretirement benefit obligation as of and for the year ended December 31, 2015 as follows: (dollars in thousands) One Percent One Percent Effect on the Total of Service and Interest Cost Component of $ 147 $ (152 ) Effect on the Postretirement Benefit Obligation 2,004 (1,756 )
Schedule of expected benefits to be paid in each of the next five years and in the aggregate for the five years thereafter	As of December 31, 2015 , expected benefits to be paid in each of the next five years and in the aggregate for the five years thereafter were as follows: (dollars in thousands) Pension Benefits Postretirement Benefits 2016 $ 6,139 $ 1,001 2017 6,345 1,004 2018 6,494 988 2019 6,752 1,016 2020 6,918 1,081 Years 2021-2025 35,744 6,992
Schedule of the fair values of the retirement plan assets by asset category	Fair Value Measurements Asset Category (dollars in thousands) Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Other Unobservable Inputs (Level 3) Total as of Dec. 31, 2015 Total as of Dec. 31, 2014 Cash $ 1,313 $ — $ — $ 1,313 $ 1,385 Equity Securities – Mutual Funds: Mixed-Cap 30,949 — — 30,949 33,648 International 17,917 — — 17,917 18,882 Emerging Market 1,982 — — 1,982 2,053 Fixed Income Securities – Mutual Funds 31,697 — — 31,697 34,186 Total $ 83,858 $ — $ — $ 83,858 $ 90,154

Share-Based Compensation (Table

Share-Based Compensation (Tables)	12 Months Ended
	Dec. 31, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Schedule of compensation expense and the related income tax benefit recognized for all share-based awards	For the years ended December 31, 2015 , 2014 , and 2013 , compensation expense and the related income tax benefit recognized for stock options and restricted stock were as follows: (dollars in thousands) 2015 2014 2013 Compensation Expense $ 7,689 $ 7,870 $ 5,546 Income Tax Benefit 3,036 3,104 2,188
Schedule of activity for restricted stock	The following table presents the activity for restricted stock: Number of Shares Weighted Average Grant Date Fair Value Unvested as of December 31, 2012 211,526 $ 47.91 Granted 170,991 47.69 Vested (133,245 ) 48.39 $ 6,448 Forfeited (9,497 ) 47.54 Unvested as of December 31, 2013 239,775 $ 47.50 Granted 155,447 58.45 Vested (130,238 ) 47.32 $ 6,163 Forfeited (1,538 ) 51.19 Unvested as of December 31, 2014 263,446 $ 53.04 Granted 116,331 57.31 Vested (108,949 ) 52.47 $ 5,759 Forfeited (2,015 ) 54.17 Unvested as of December 31, 2015 1 268,813 $ 55.92
Schedule of activity for restricted stock units	The following table presents the activity for RSU: Number of Units Weighted Average Fair Value of Restricted Balance as of December 31, 2013 — $ — Granted 105,405 55.17 Balance as of December 31, 2014 105,405 $ 55.17 Granted 61,751 56.68 Vested (31,651 ) 55.17 $ 1,940 Balance as of December 31, 2015 135,505 $ 55.86
Schedule of activity related to stock options	The following table presents the activity related to stock options under all plans for the year ended December 31, 2015 : Stock Weighted Weighted Aggregate Stock Options Outstanding as of January 1, 2015 755,343 $ 46.29 Exercised (197,927 ) 49.03 Forfeited (2,057 ) 47.35 Stock Options Outstanding as of December 31, 2015 555,359 45.31 5.8 $ 9,770 Stock Options Vested and Exercisable as of December 31, 2015 555,359 45.31 5.8 9,770
Summary of certain stock option activity of the Company	The following summarizes certain stock option activity of the Company for the years ended December 31, 2015 , 2014 , and 2013 : (dollars in thousands) 2015 2014 2013 Intrinsic Value of Stock Options Exercised $ 2,754 $ 1,209 $ 3,262 Cash Received from Stock Options Exercised 9,704 4,083 8,369 Tax Benefits Realized from Stock Options Exercised 330 34 690 Total Fair Value of Stock Options that Vested — — 3,731

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2015
Income Tax Disclosure [Abstract]
Schedule of the Company's Provision for Income Taxes	The components of the Company's provision for income taxes for the years ended December 31, 2015 , 2014 , and 2013 were as follows: (dollars in thousands) 2015 2014 2013 Current: Federal $ 73,278 $ 76,789 $ 63,731 State 3,737 3,018 (575 ) Total Current 77,015 79,807 63,156 Deferred: Federal (6,801 ) (5,603 ) (231 ) State 284 392 734 Total Deferred (6,517 ) (5,211 ) 503 Provision for Income Taxes $ 70,498 $ 74,596 $ 63,659
Schedule of significant components of the Company's Deferred Tax Liabilities and Assets	As of December 31, 2015 and 2014 , significant components of the Company's deferred tax liabilities and assets were as follows: December 31, (dollars in thousands) 2015 2014 Deferred Tax Liabilities: Accrued Pension Cost $ (13,707 ) $ (14,014 ) Federal Home Loan Bank Stock (5,088 ) (6,658 ) Lease Transactions (85,874 ) (97,864 ) Energy Tax Credits (8,054 ) (5,716 ) Net Unrealized Gains on Investments Securities (3,453 ) (4,830 ) Deferred Loan Fees (7,744 ) (5,982 ) Originated Mortgage Servicing Rights (9,104 ) (9,777 ) Other (657 ) (599 ) Gross Deferred Tax Liabilities (133,681 ) (145,440 ) Deferred Tax Assets: Accelerated Depreciation 7,775 9,419 Allowance for Loan Losses 42,890 44,877 Minimum Pension Liability 18,831 22,214 Accrued Expenses 16,738 15,622 Postretirement Benefit Obligations 12,849 12,884 Capital Lease Expenses 3,231 3,222 Restricted Stock 6,262 5,288 Investment in Unincorporated Entities 1,951 3,084 Deductible State and Local Taxes 4,166 5,598 Other 7,225 6,898 Gross Deferred Tax Assets Before Valuation Allowance 121,918 129,106 Valuation Allowance (3,932 ) (4,656 ) Gross Deferred Tax Assets After Valuation Allowance 117,986 124,450 Net Deferred Tax Liabilities $ (15,695 ) $ (20,990 )
Schedule of reconciliation of the statutory federal income tax rate to the Company's Effective Tax Rate	The following is a reconciliation of the statutory federal income tax rate to the Company's effective tax rate for the years ended December 31, 2015 , 2014 , and 2013 : 2015 2014 2013 Statutory Federal Income Tax Rate 35.00 % 35.00 % 35.00 % Increase (Decrease) in Income Tax Rate Resulting From: State Taxes, Net of Federal Income Tax 1.23 0.59 0.11 Tax Reserve Adjustments 0.38 0.88 (0.44 ) Leveraged Leases 0.06 0.01 0.02 Low-Income Housing Investments (0.78 ) (0.10 ) (0.51 ) Investment Tax Credits (0.89 ) (0.68 ) (0.80 ) Bank-Owned Life Insurance (1.06 ) (0.97 ) (0.96 ) Tax-Exempt Income (3.03 ) (2.83 ) (2.78 ) Other (0.42 ) (0.51 ) 0.09 Effective Tax Rate 30.49 % 31.39 % 29.73 %
Schedule of reconciliation of the Company's Liability for Unrecognized Tax Benefits	December 31, 2015 , 2014 , and 2013 : (dollars in thousands) 2015 2014 2013 Unrecognized Tax Benefits at Beginning of Year $ 12,229 $ 11,846 $ 15,433 Gross Increases, Related to Tax Positions Taken in a Prior Period 398 1,074 1,587 Gross Decreases, Related to Tax Positions Taken in a Prior Period (98 ) (314 ) (194 ) Gross Increases, Related to Current Period Tax Positions 573 498 1,557 Lapse of Statute of Limitations (1,500 ) (875 ) (6,537 ) Unrecognized Tax Benefits at End of Year $ 11,602 $ 12,229 $ 11,846

Derivative Financial Instrume46

Derivative Financial Instruments (Tables)	12 Months Ended
	Dec. 31, 2015
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 December 31, 2015 and 2014 were as follows: December 31, 2015 December 31, 2014 (dollars in thousands) Notional Amount Fair Value Notional Amount Fair Value Interest Rate Lock Commitments $ 4,375 $ 270 $ 2,354 $ 152 Forward Commitments 5,862 4 5,404 (13 ) Interest Rate Swap Agreements Receive Fixed/Pay Variable Swaps 203,667 13,021 183,283 16,206 Pay Fixed/Receive Variable Swaps 203,667 (13,051 ) 183,283 (16,240 ) Foreign Exchange Contracts 42,777 104 44,240 (345 )
Derivative financial instruments, their fair values, and balance sheet location	The following table presents the Company's derivative financial instruments, their fair values, and the location in the consolidated statements of condition as of December 31, 2015 and 2014 : December 31, 2015 December 31, 2014 Derivative Financial Instruments Not Designated 1 (dollars in thousands) Asset Liability Asset Liability Interest Rate Lock Commitments $ 270 $ — $ 152 $ — Forward Commitments 5 1 — 13 Interest Rate Swap Agreements 13,543 13,573 16,262 16,296 Foreign Exchange Contracts 149 45 101 446 Total $ 13,967 $ 13,619 $ 16,515 $ 16,755 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	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 years ended December 31, 2015 , 2014 , and 2013 : Location of Net Gains (Losses)Recognized in the Year Ended December 31, Derivative Financial Instruments Not Designated (dollars in thousands) 2015 2014 2013 Interest Rate Lock Commitments Mortgage Banking $ 2,779 $ 3,072 $ 6,092 Forward Commitments Mortgage Banking 27 (527 ) 8,085 Interest Rate Swap Agreements Other Noninterest Income 1,085 130 292 Foreign Exchange Contracts Other Noninterest Income 2,783 3,107 3,182 Total $ 6,674 $ 5,782 $ 17,651

Affordable Housing Projects T47

Affordable Housing Projects Tax Credit Partnerships (Tables)	12 Months Ended
	Dec. 31, 2015
Equity Method Investments and Joint Ventures [Abstract]
Equity Method Investments	As of December 31, 2015 , the expected payments for unfunded affordable housing commitments were as follows: (dollars in thousands) Amount 2016 $ 16,305 2017 8,778 2018 28 2019 75 2020 3 Thereafter 65 Total Unfunded Commitments $ 25,254 The following table presents tax credits and other tax benefits recognized and amortization expense related to affordable housing for the years ended December 31, 2015 , 2014 , and 2013 . (dollars in thousands) 2015 2014 2013 Effective Yield Method Tax credits and other tax benefits recognized $ 13,448 $ 10,946 $ 9,416 Amortization Expense in Provision for Income Taxes 7,735 5,881 4,673

Balance Sheet Offsetting (Table

Balance Sheet Offsetting (Tables)	12 Months Ended
	Dec. 31, 2015
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 December 31, 2015 , disaggregated by the class of collateral pledged. Remaining Contractual Maturity of Repurchase Agreements (dollars in thousands) Up to 91-365 days 1-3 Years After Total December 31, 2015 Class of Collateral Pledged: Debt Securities Issued by the U.S. Treasury and Government Agencies $ — $ — $ 200,000 $ 110,313 $ 310,313 Debt Securities Issued by States and Political Subdivisions 47,915 4,692 100 — 52,707 Mortgage-Backed Securities: Residential - Government Agencies 1,150 51,169 — 102,919 155,238 Residential - U.S. Government-Sponsored Enterprises — 23,831 — 86,768 110,599 Total $ 49,065 $ 79,692 $ 200,100 $ 300,000 $ 628,857
Schedule of assets and liabilities subject to an enforceable master netting arrangement	The following table presents the assets and liabilities subject to an enforceable master netting arrangement, or repurchase agreements, as of December 31, 2015 and 2014 . 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. (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 December 31, 2015 Assets: Interest Rate Swap Agreements: Institutional Counterparties $ 261 $ — $ 261 $ 261 $ — $ — Liabilities: Interest Rate Swap Agreements: Institutional Counterparties 13,312 — 13,312 261 — 13,051 Repurchase Agreements: Private Institutions 575,000 — 575,000 — 575,000 — Government Entities 53,857 — 53,857 — 53,857 — $ 628,857 $ — $ 628,857 $ — $ 628,857 $ — December 31, 2014 Assets: Interest Rate Swap Agreements: Institutional Counterparties $ 28 $ — $ 28 $ 28 $ — $ — Liabilities: Interest Rate Swap Agreements: Institutional Counterparties 16,268 — 16,268 28 — 16,240 Repurchase Agreements: Private Institutions 600,000 — 600,000 — 600,000 — Government Entities 88,601 — 88,601 — 88,601 — $ 688,601 $ — $ 688,601 $ — $ 688,601 $ — 1 The application of collateral cannot reduce the net amount below zero. Therefore, excess collateral is not reflected in this table. For repurchase agreements with private institutions, the fair value of securities pledged was $663.2 million and $694.7 million as of December 31, 2015 and 2014 , respectively. For repurchase agreements with government entities, the fair value of securities pledged was $66.9 million as of December 31, 2015 .

Commitments, Contingencies, a49

Commitments, Contingencies, and Guarantees (Tables)	12 Months Ended
	Dec. 31, 2015
Commitments and Contingencies Disclosure [Abstract]
Credit commitments	The Company's credit commitments as of December 31, 2015 were as follows: (dollars in thousands) December 31, 2015 Unfunded Commitments to Extend Credit $ 2,604,429 Standby Letters of Credit 48,153 Commercial Letters of Credit 15,867 Total $ 2,668,449
Schedule of rental expense	Rental expense for all operating leases for the years ended December 31, 2015 , 2014 , and 2013 were as follows: (dollars in thousands) 2015 2014 2013 Minimum Rentals $ 18,826 $ 18,411 $ 19,258 Sublease Rental Income (6,212 ) (6,647 ) (6,806 ) Total $ 12,614 $ 11,764 $ 12,452
Schedule of future minimum payments for capital leases and non-cancelable operating leases	Future minimum payments for capital leases and non-cancelable operating leases with initial or remaining terms of one year or more consisted of the following as of December 31, 2015 : (dollars in thousands) Capital Leases Operating Leases 2016 $ 825 $ 13,752 2017 825 11,289 2018 825 9,974 2019 825 8,253 2020 825 7,993 Thereafter 26,405 99,276 Total Future Minimum Lease Payments 30,530 $ 150,537 Amounts Representing Interest (19,682 ) Present Value of Net Future Minimum Lease Payments $ 10,848

Fair Value of Assets and Liab50

Fair Value of Assets and Liabilities (Tables)	12 Months Ended
	Dec. 31, 2015
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 December 31, 2015 and 2014 : (dollars in thousands) Quoted Prices Significant Significant Total December 31, 2015 Assets: Investment Securities Available-for-Sale Debt Securities Issued by the U.S. Treasury and Government Agencies $ 545 $ 358,349 $ — $ 358,894 Debt Securities Issued by States and Political Subdivisions — 731,918 — 731,918 Debt Securities Issued by Corporations — 308,870 — 308,870 Mortgage-Backed Securities: Residential - Government Agencies — 316,245 — 316,245 Residential - U.S. Government-Sponsored Enterprises — 441,864 — 441,864 Commercial - Government Agencies — 99,027 — 99,027 Total Mortgage-Backed Securities — 857,136 — 857,136 Total Investment Securities Available-for-Sale 545 2,256,273 — 2,256,818 Loans Held for Sale — 4,808 — 4,808 Mortgage Servicing Rights — — 1,970 1,970 Other Assets 20,262 — — 20,262 Derivatives 1 — 154 13,813 13,967 Total Assets Measured at Fair Value on a $ 20,807 $ 2,261,235 $ 15,783 $ 2,297,825 Liabilities: Derivatives 1 $ — $ 46 $ 13,573 $ 13,619 Total Liabilities Measured at Fair Value on a $ — $ 46 $ 13,573 $ 13,619 December 31, 2014 Assets: Investment Securities Available-for-Sale Debt Securities Issued by the U.S. Treasury and Government Agencies $ 61,271 $ 269,987 $ — $ 331,258 Debt Securities Issued by States and Political Subdivisions — 743,970 — 743,970 Debt Securities Issued by Corporations — 294,833 — 294,833 Mortgage-Backed Securities: Residential - Government Agencies — 462,436 — 462,436 Residential - U.S. Government-Sponsored Enterprises — 278,461 — 278,461 Commercial - Government Agencies — 178,232 — 178,232 Total Mortgage-Backed Securities — 919,129 — 919,129 Total Investment Securities Available-for-Sale 61,271 2,227,919 — 2,289,190 Loans Held for Sale — 5,136 — 5,136 Mortgage Servicing Rights — — 2,604 2,604 Other Assets 18,794 — — 18,794 Derivatives 1 — 101 16,414 16,515 Total Assets Measured at Fair Value on a $ 80,065 $ 2,233,156 $ 19,018 $ 2,332,239 Liabilities: Derivatives 1 $ — $ 459 $ 16,296 $ 16,755 Total Liabilities Measured at Fair Value on a $ — $ 459 $ 16,296 $ 16,755 1 The fair value of each class of derivatives is shown in Note 17 to the Consolidated Financial Statements.
Changes in Level 3 assets and liabilities measured at fair value on a recurring basis	For the years ended December 31, 2015 and 2014 , the changes in Level 3 assets and liabilities measured at fair value on a recurring basis were as follows: (dollars in thousands) Mortgage 1 Net Derivative Assets and Liabilities 2 Year Ended December 31, 2015 Balance as of January 1, 2015 $ 2,604 $ 118 Realized and Unrealized Net Gains (Losses): Included in Net Income (634 ) 2,783 Transfers to Loans Held for Sale — (2,661 ) Balance as of December 31, 2015 $ 1,970 $ 240 Total Unrealized Net Gains (Losses) Included in Net Income $ (251 ) $ 240 Year Ended December 31, 2014 Balance as of January 1, 2014 $ 3,826 $ 379 Realized and Unrealized Net Gains (Losses): Included in Net Income (1,222 ) 3,195 Transfers to Loans Held for Sale — (3,456 ) Balance as of December 31, 2014 $ 2,604 $ 118 Total Unrealized Net Gains (Losses) Included in Net Income $ (868 ) $ 118 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	For Level 3 assets and liabilities measured at fair value on a recurring or nonrecurring basis as of December 31, 2015 and 2014 , the significant unobservable inputs used in the fair value measurements were as follows: Significant Unobservable Inputs (weighted-average) Fair Value December 31, December 31, (dollars in thousands) Valuation Technique Description 2015 2014 2015 2014 Mortgage Servicing Rights Discounted Cash Flow Constant Prepayment Rate 1 9.10 % 11.62 % $ 26,774 $ 25,441 Discount Rate 2 9.38 % 10.61 % Net Derivative Assets and Liabilities: Interest Rate Lock Commitments Pricing Model Closing Ratio 94.70 % 93.85 % $ 270 $ 152 Interest Rate Swap Agreements Discounted Cash Flow Credit Factor 0.22 % 0.21 % $ (30 ) $ (34 ) 1 Represents annualized loan repayment rate assumption. 2 Derived from multiple interest rate scenarios that incorporate a spread to the London Interbank Offered Rate swap 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 December 31, 2015 and 2014 . (dollars in thousands) Fair Value Hierarchy Net Carrying Amount Valuation Allowance December 31, 2015 Mortgage Servicing Rights - amortization method Level 3 $ 21,032 $ 21 Foreclosed Real Estate Level 3 824 — Other Assets - Equipment Held for Sale Level 3 4,657 9,453 December 31, 2014 Mortgage Servicing Rights - amortization method Level 3 $ 22,091 $ 57 Foreclosed Real Estate Level 3 2,311 89
Schedule of difference between the aggregate fair value and the aggregate unpaid principal balance of the Company's residential mortgage loans held for sale	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 December 31, 2015 and 2014 . (dollars in thousands) Aggregate Aggregate Aggregate Fair Value December 31, 2015 Loans Held for Sale $ 4,808 $ 4,575 $ 233 December 31, 2014 Loans Held for Sale $ 5,136 $ 4,740 $ 396
Schedule of carrying amount, fair value, and fair value hierarchy of financial instruments	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 December 31, 2015 and 2014 . 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 (dollars in thousands) Carrying Amount Fair Value Quoted Prices in Active Markets for Identical Assets or Liabilities(Level 1) Significant Significant December 31, 2015 Financial Instruments – Assets Investment Securities Held-to-Maturity $ 3,982,736 $ 4,006,412 $ 489,967 $ 3,516,445 $ — Loans 1 7,538,454 7,967,385 — — 7,967,385 Financial Instruments – Liabilities Time Deposits 1,177,651 1,178,837 — 1,178,837 — Securities Sold Under Agreements to Repurchase 628,857 686,853 — 686,853 — Other Debt 2 234,938 235,668 — 235,668 — December 31, 2014 Financial Instruments – Assets Investment Securities Held-to-Maturity $ 4,466,679 $ 4,504,495 $ 499,616 $ 4,004,879 $ — Loans 1 6,542,719 7,048,757 — — 7,048,757 Financial Instruments – Liabilities Time Deposits 1,434,001 1,437,064 — 1,437,064 — Securities Sold Under Agreements to Repurchase 688,601 758,781 — 758,781 — Other Debt 2 163,005 163,911 — 163,911 — 1 Net of unearned income and the Allowance. 2 Excludes capitalized lease obligations.

Bank of Hawaii Corporation Fi51

Bank of Hawaii Corporation Financial Statements (Tables)	12 Months Ended
	Dec. 31, 2015
Condensed Financial Information of Parent Company Only Disclosure [Abstract]
Schedule of condensed statements of income	Condensed Statements of Comprehensive Income Year Ended December 31, (dollars in thousands) 2015 2014 2013 Income Dividends and Interest from Bank of Hawaii $ 115,000 $ 136,000 $ 133,000 Investment Securities Gains, Net 9,870 7,810 — Other Income 973 690 727 Total Income 125,843 144,500 133,727 Noninterest Expense Intercompany Salaries and Services 651 839 852 Other Expenses 2,325 2,067 2,942 Total Noninterest Expense 2,976 2,906 3,794 Income Before Income Tax Benefit and Equity in Undistributed Income of Subsidiaries 122,867 141,594 129,933 Income Tax Benefit (Expense) (1,670 ) 225 2,211 Equity in Undistributed Income of Subsidiaries 39,507 21,223 18,358 Net Income $ 160,704 $ 163,042 $ 150,502 Comprehensive Income $ 163,833 $ 168,179 $ 89,471
Schedule of condensed statements of condition	Condensed Statements of Condition (dollars in thousands) December 31, 2015 December 31, 2014 Assets Cash with Bank of Hawaii $ 63,755 $ 68,563 Investment Securities Held-to-Maturity 4,960 4,947 Goodwill 14,129 14,129 Income Taxes Receivable and Deferred Tax Assets 2,445 2,868 Other Assets 7,842 7,825 Equity in Net Assets of Subsidiaries 1,036,977 976,354 Total Assets $ 1,130,108 $ 1,074,686 Liabilities Income Taxes Payable $ 5,072 $ 6,269 Other Liabilities 8,776 13,331 Total Liabilities 13,848 19,600 Shareholders' Equity 1,116,260 1,055,086 Total Liabilities and Shareholders' Equity $ 1,130,108 $ 1,074,686
Schedule of condensed statements of cash flows	Condensed Statements of Cash Flows Year Ended December 31, (dollars in thousands) 2015 2014 2013 Operating Activities Net Income $ 160,704 $ 163,042 $ 150,502 Adjustments to Reconcile Net Income to Net Cash Provided by Operating Activities: Share-Based Compensation 639 656 616 Net Gains on Sales of Investment Securities (9,870 ) (7,810 ) — Equity in Undistributed Income of Subsidiaries (39,507 ) (21,223 ) (18,358 ) Net Change in Other Assets and Other Liabilities (481 ) 78 1,980 Net Cash Provided by Operating Activities 111,485 134,743 134,740 Investing Activities Capital Contributions to the Bank (10,179 ) — — Proceeds from Sales of Investment Securities 9,870 7,810 — Purchase of Investment Securities Held-to-Maturity — (4,936 ) — Net Cash Provided by (Used in) Investing Activities (309 ) 2,874 — Financing Activities Proceeds from Issuance of Common Stock 15,364 9,995 14,495 Repurchase of Common Stock (52,981 ) (64,046 ) (39,655 ) Cash Dividends Paid (78,367 ) (79,660 ) (80,534 ) Net Cash Used in Financing Activities (115,984 ) (133,711 ) (105,694 ) Net Change in Cash and Cash Equivalents (4,808 ) 3,906 29,046 Cash and Cash Equivalents at Beginning of Period 68,563 64,657 35,611 Cash and Cash Equivalents at End of Period $ 63,755 $ 68,563 $ 64,657

Summary of Significant Accoun52

Summary of Significant Accounting Policies (VIEs, Receivables and loans, Cash Equivalents) (Details 1) $ in Millions	12 Months Ended
	Dec. 31, 2015USD ($)classsegmentcomponent	Dec. 31, 2014USD ($)
Variable Interest Entity [Line Items]
Variable Interest Entity, Nonconsolidated, Carrying Amount, Assets	$ 79	$ 77.5
Loans and Leases
Number of portfolio segments of loans and leases (commercial and consumer) | segment	2
Number of classes of loans and leases determined by management | class	8
Loans modified in a troubled debt restructuring
Period during which non-accrual loan that has been modified in a troubled debt restructuring remains on non-accrual status (in months)	6 months
Number of components of company's reserve for credit losses | component	2
Cash and Cash Equivalents
Maximum original maturity period of cash and cash equivalents (in days)	90 days
Low-income housing partnerships
Variable Interest Entity [Line Items]
Period over which tax credits or benefits are generally recognized (in years)	10 years
Unfunded commitments to fund low-income housing partnerships	$ 25.3	$ 31.4
Solar energy partnerships
Variable Interest Entity [Line Items]
Period over which tax credits or benefits are generally recognized (in years)	6 years
Commercial
Non-Performing Loans and Leases
Minimum maturity period to be considered to place loans and leases on non-accrual status (in days)	90 days
Residential mortgage and home equity loan
Non-Performing Loans and Leases
Minimum maturity period to be considered to place loans and leases on non-accrual status (in days)	120 days
Home Equity
Non-Performing Loans and Leases
Minimum maturity period to be considered for loans and leases to be charged off (in days)	120 days
Home Equity | Maximum
Non-Performing Loans and Leases
Combined loan-to-value ratio, considered in determining whether the entire outstanding balance on the loan is to be charged-off or not (as a percent)	60.00%
Automobile and Other consumer
Non-Performing Loans and Leases
Minimum maturity period to be considered for loans and leases to be charged off (in days)	120 days
Commercial and Industrial
Non-Performing Loans and Leases
Minimum maturity period to be considered for loans and leases to be charged off (in days)	120 days

Summary of Significant Accoun53

Summary of Significant Accounting Policies (Property and equipment and other) (Details 2) $ in Millions	12 Months Ended
	Dec. 31, 2015USD ($)plan	Dec. 31, 2014USD ($)	Dec. 31, 2013USD ($)
Pension and Postretirement Benefit Plans
Number of company's pension plans | plan	2
Minimum percentage of net acturial gain (loss) will be amortized in net periodic benefit cost	10.00%
Income Taxes
Minimum percentage of likelihood of tax position being realized upon ultimate settlement according to management's judgment	50.00%
Advertising Costs
Advertising costs | $	$ 5.3	$ 5.3	$ 5
Maximum | Building
Premises and Equipment
Estimated useful lives (in years)	30 years
Maximum | Equipment
Premises and Equipment
Estimated useful lives (in years)	10 years

Restrictions on Cash (Details 1

Restrictions on Cash (Details 1) - USD ($) $ in Millions	Dec. 31, 2015	Dec. 31, 2014
Cash and Cash Equivalents [Abstract]
Required minimum average reserve balance based on the amount of deposits held with the Federal Reserve Bank	$ 99.3	$ 92.3

Investment Securities (Amort co

Investment Securities (Amort cost, unrealized gains and losses, and fair value) (Details 1) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Schedule of Held-to-maturity Securities [Line Items]
Held-to-Maturity: Amortized Cost	$ 3,982,736	$ 4,466,679	$ 4,744,519
Held-to-Maturity: Gross Unrealized Gains	50,771	66,859	37,071
Held-to-Maturity: Gross Unrealized Losses	(27,095)	(29,043)	(84,003)
Held-to-Maturity: Fair Value	4,006,412	4,504,495	4,697,587
Available-for-Sale:
Available-for-Sale: Amortized Cost	2,236,073	2,262,807	2,245,857
Available-for-Sale: Gross Unrealized Gains	34,120	41,668	31,420
Available-for-Sale: Gross Unrealized Losses	(13,375)	(15,285)	(33,580)
Available-for-Sale	2,256,818	2,289,190	2,243,697
Debt Securities Issued by the U.S. Treasury and Government Agencies
Available-for-Sale:
Available-for-Sale: Amortized Cost	356,260	325,365	390,873
Available-for-Sale: Gross Unrealized Gains	3,472	5,933	6,640
Available-for-Sale: Gross Unrealized Losses	(838)	(40)	(234)
Available-for-Sale	358,894	331,258	397,279
Debt Securities Issued by States and Political Subdivisions
Available-for-Sale:
Available-for-Sale: Amortized Cost	709,724	723,474	691,861
Available-for-Sale: Gross Unrealized Gains	22,498	21,941	8,396
Available-for-Sale: Gross Unrealized Losses	(304)	(1,445)	(13,455)
Available-for-Sale	731,918	743,970	686,802
Debt Securities Issued by Corporations
Available-for-Sale:
Available-for-Sale: Amortized Cost	313,136	298,272	280,172
Available-for-Sale: Gross Unrealized Gains	236	546	1,165
Available-for-Sale: Gross Unrealized Losses	(4,502)	(3,985)	(7,836)
Available-for-Sale	308,870	294,833	273,501
Mortgage-Backed Securities
Available-for-Sale:
Available-for-Sale: Amortized Cost	856,953	915,696	882,951
Available-for-Sale: Gross Unrealized Gains	7,914	13,248	15,219
Available-for-Sale: Gross Unrealized Losses	(7,731)	(9,815)	(12,055)
Available-for-Sale	857,136	919,129	886,115
Debt Securities Issued by the U.S. Treasury and Government Agencies
Schedule of Held-to-maturity Securities [Line Items]
Held-to-Maturity: Amortized Cost	489,747	498,767	433,987
Held-to-Maturity: Gross Unrealized Gains	1,359	2,008	3,045
Held-to-Maturity: Gross Unrealized Losses	(1,139)	(1,159)	(3,667)
Held-to-Maturity: Fair Value	489,967	499,616	433,365
Debt Securities Issued by States and Political Subdivisions
Schedule of Held-to-maturity Securities [Line Items]
Held-to-Maturity: Amortized Cost	245,980	249,559	253,039
Held-to-Maturity: Gross Unrealized Gains	17,114	15,459	817
Held-to-Maturity: Gross Unrealized Losses	0	0	(133)
Held-to-Maturity: Fair Value	263,094	265,018	253,723
Debt Securities Issued by Corporations
Schedule of Held-to-maturity Securities [Line Items]
Held-to-Maturity: Amortized Cost	151,301	166,686	190,181
Held-to-Maturity: Gross Unrealized Gains	368	109	0
Held-to-Maturity: Gross Unrealized Losses	(2,041)	(3,442)	(5,708)
Held-to-Maturity: Fair Value	149,628	163,353	184,473
Mortgage-Backed Securities
Schedule of Held-to-maturity Securities [Line Items]
Held-to-Maturity: Amortized Cost	3,095,708	3,551,667	3,867,312
Held-to-Maturity: Gross Unrealized Gains	31,930	49,283	33,209
Held-to-Maturity: Gross Unrealized Losses	(23,915)	(24,442)	(74,495)
Held-to-Maturity: Fair Value	3,103,723	3,576,508	3,826,026
Residential - Government Agencies
Schedule of Held-to-maturity Securities [Line Items]
Held-to-Maturity: Amortized Cost	2,191,138	2,862,369	3,523,343
Held-to-Maturity: Gross Unrealized Gains	27,893	45,407	31,786
Held-to-Maturity: Gross Unrealized Losses	(19,067)	(20,636)	(66,572)
Held-to-Maturity: Fair Value	2,199,964	2,887,140	3,488,557
Residential - U.S. Government Sponsored Enterprises
Schedule of Held-to-maturity Securities [Line Items]
Held-to-Maturity: Amortized Cost	647,762	379,365	21,602
Held-to-Maturity: Gross Unrealized Gains	1,656	3,635	1,423
Held-to-Maturity: Gross Unrealized Losses	(2,616)	(15)	0
Held-to-Maturity: Fair Value	646,802	382,985	23,025
Commercial - Government Agencies
Schedule of Held-to-maturity Securities [Line Items]
Held-to-Maturity: Amortized Cost	256,808	309,933
Held-to-Maturity: Gross Unrealized Gains	2,381	241	0
Held-to-Maturity: Gross Unrealized Losses	(2,232)	(3,791)	(7,923)
Held-to-Maturity: Fair Value	$ 256,957	$ 306,383	$ 314,444

Investment Securities (Contract

Investment Securities (Contractual Maturities and Narrative) (Details 2) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Available-for-Sale Securities, Debt Maturities, Single Maturity Date, Amortized Cost Basis Rolling Maturity [Abstract]
Due in One Year or Less	$ 69,889
Due After One Year Through Five Years	474,444
Due After Five Years Through Ten Years	408,341
Due After Ten Years	70,732
Available-for-Sale, Total	1,023,406
Available-for-Sale Securities, Debt Maturities, Single Maturity Date, Rolling Maturities [Abstract]
Due in One Year or Less	70,173
Due After One Year Through Five Years	477,064
Due After Five Years Through Ten Years	419,001
Due After Ten Years	75,096
Fair Value, Total	1,041,334
Available-for-Sale: Amortized Cost	2,236,073	$ 2,262,807	$ 2,245,857
Available-for-Sale: Fair Value	2,256,818	2,289,190	2,243,697
Held-to-Maturity Securities, Debt Maturities, Single Maturity Date, Amortized Cost Basis, Rolling Maturity [Abstract]
Due After One Year Through Five Years	522,433
Due After Five Years Through Ten Years	292,951
Due After Ten Years	71,644
Amortized Cost, Total	887,028
Held-to-Maturity Securities, Debt Maturities, Single Maturity Date, Fair Value, Rolling Maturities [Abstract]
Due After One Year Through Five Years	523,945
Due After Five Years Through Ten Years	301,459
Due After Ten Years	77,285
Fair Value, Total	902,689
Held-to-Maturity: Amortized Cost	3,982,736
Held-to-Maturity: Fair Value	4,006,412	4,504,495	4,697,587
Carrying value of investment securities which were pledged to secure deposits of gov't entities and repos	2,500,000	2,800,000	2,600,000
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	355,714
Available-for-sale Securities, Debt Securities Issued by Government Agencies and Mortgage-Backed-Securities: Fair Value	358,348
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	856,953
Available-for-sale Securities, Debt Securities Issued by Government Agencies and Mortgage-Backed-Securities: Fair Value	857,136
Available-for-Sale: Amortized Cost	856,953	915,696	882,951
Available-for-Sale: Fair Value	857,136	919,129	886,115
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	310,966
Available-for-sale Securities, Debt Securities Issued by Government Agencies and Mortgage-Backed-Securities: Fair Value	316,245
Available-for-Sale: Amortized Cost	310,966	452,493	641,227
Available-for-Sale: Fair Value	316,245	462,436	653,194
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	442,760
Available-for-sale Securities, Debt Securities Issued by Government Agencies and Mortgage-Backed-Securities: Fair Value	441,864
Available-for-Sale: Amortized Cost	442,760	276,390	21,865
Available-for-Sale: Fair Value	441,864	278,461	23,268
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	103,227
Available-for-sale Securities, Debt Securities Issued by Government Agencies and Mortgage-Backed-Securities: Fair Value	99,027
Available-for-Sale: Amortized Cost	103,227	186,813	219,859
Available-for-Sale: Fair Value	99,027	178,232	209,653
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	3,095,708
Held-to-Maturity: Mortgage-Backed-Securities: Fair Value	3,103,723
Held-to-Maturity: Fair Value	$ 3,103,723	$ 3,576,508	$ 3,826,026

Investment Securities (Gains an

Investment Securities (Gains and Losses on Sales) (Details 3) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Investments, Debt and Equity Securities [Abstract]
Gross Gains on Sales of Investment Securities	$ 11,640	$ 8,063	$ 0
Gross Losses on Sales of Investment Securities	(1,480)	0	0
Net Gains on Sales of Investment Securities	10,160	8,063	$ 0
Tax on Sale of Investment Securities	$ 4,000	$ 3,200

Investment Securities (Unrealiz

Investment Securities (Unrealized Position - Less than 12 Mos., 12 Mos. or Longer) (Details 4) $ in Thousands	Dec. 31, 2015USD ($)security	Dec. 31, 2014USD ($)
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Less Than 12 Months, Fair Value	$ 695,059	$ 260,475
Less Than 12 Months, Gross Unrealized Losses	(5,215)	(1,677)
12 Months or Longer, Fair Value	282,697	470,871
12 Months or Longer, Gross Unrealized Losses	(8,160)	(13,608)
Total Fair Value	977,756	731,346
Total Gross Unrealized Losses	(13,375)	(15,285)
Held-to-Maturity Securities, Continuous Unrealized Loss Position [Abstract]
Less Than 12 Months, Fair Value	1,379,654	567,527
Less than 12 Months, Gross Unrealized Losses	(10,607)	(1,884)
12 Months or Longer, Fair Value	537,622	1,243,333
12 Months or Longer, Gross Unrealized Losses	(16,488)	(27,159)
Total, Fair Value	1,917,276	1,810,860
Total Gross Unrealized Losses	$ (27,095)	(29,043)
Number of Investment Securities in Unrealized Loss Position | security	224
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	$ 144,260	1,729
Less Than 12 Months, Gross Unrealized Losses	(822)	(2)
12 Months or Longer, Fair Value	5,452	5,546
12 Months or Longer, Gross Unrealized Losses	(16)	(38)
Total Fair Value	149,712	7,275
Total Gross Unrealized Losses	(838)	(40)
Debt Securities Issued by States and Political Subdivisions
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Less Than 12 Months, Fair Value	72,248	78,068
Less Than 12 Months, Gross Unrealized Losses	(252)	(305)
12 Months or Longer, Fair Value	6,798	94,543
12 Months or Longer, Gross Unrealized Losses	(52)	(1,140)
Total Fair Value	79,046	172,611
Total Gross Unrealized Losses	(304)	(1,445)
Debt Securities Issued by Corporations
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Less Than 12 Months, Fair Value	101,269	73,829
Less Than 12 Months, Gross Unrealized Losses	(1,747)	(1,171)
12 Months or Longer, Fair Value	162,304	180,335
12 Months or Longer, Gross Unrealized Losses	(2,755)	(2,814)
Total Fair Value	263,573	254,164
Total Gross Unrealized Losses	(4,502)	(3,985)
Mortgage-Backed Securities
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Less Than 12 Months, Fair Value	377,282	106,849
Less Than 12 Months, Gross Unrealized Losses	(2,394)	(199)
12 Months or Longer, Fair Value	108,143	190,447
12 Months or Longer, Gross Unrealized Losses	(5,337)	(9,616)
Total Fair Value	485,425	297,296
Total Gross Unrealized Losses	(7,731)	(9,815)
Residential - Government Agencies
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Less Than 12 Months, Fair Value	30,679	3,025
Less Than 12 Months, Gross Unrealized Losses	(130)	(8)
12 Months or Longer, Fair Value	9,117	12,215
12 Months or Longer, Gross Unrealized Losses	(1,137)	(1,035)
Total Fair Value	39,796	15,240
Total Gross Unrealized Losses	(1,267)	(1,043)
Residential - U.S. Government Sponsored Enterprises
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Less Than 12 Months, Fair Value	346,603	103,824
Less Than 12 Months, Gross Unrealized Losses	(2,264)	(191)
12 Months or Longer, Fair Value	0	0
12 Months or Longer, Gross Unrealized Losses	0	0
Total Fair Value	346,603	103,824
Total Gross Unrealized Losses	(2,264)	(191)
Commercial - Government Agencies
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Less Than 12 Months, Fair Value	0	0
Less Than 12 Months, Gross Unrealized Losses	0	0
12 Months or Longer, Fair Value	99,026	178,232
12 Months or Longer, Gross Unrealized Losses	(4,200)	(8,581)
Total Fair Value	99,026	178,232
Total Gross Unrealized Losses	(4,200)	(8,581)
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	264,747	70,016
Less than 12 Months, Gross Unrealized Losses	(1,139)	(134)
12 Months or Longer, Fair Value	0	144,222
12 Months or Longer, Gross Unrealized Losses	0	(1,025)
Total, Fair Value	264,747	214,238
Total Gross Unrealized Losses	(1,139)	(1,159)
Debt Securities Issued by Corporations
Held-to-Maturity Securities, Continuous Unrealized Loss Position [Abstract]
Less Than 12 Months, Fair Value	28,218	46,196
Less than 12 Months, Gross Unrealized Losses	(66)	(349)
12 Months or Longer, Fair Value	71,208	82,109
12 Months or Longer, Gross Unrealized Losses	(1,975)	(3,093)
Total, Fair Value	99,426	128,305
Total Gross Unrealized Losses	(2,041)	(3,442)
Mortgage-Backed Securities
Held-to-Maturity Securities, Continuous Unrealized Loss Position [Abstract]
Less Than 12 Months, Fair Value	1,086,689	451,315
Less than 12 Months, Gross Unrealized Losses	(9,402)	(1,401)
12 Months or Longer, Fair Value	466,414	1,017,002
12 Months or Longer, Gross Unrealized Losses	(14,513)	(23,041)
Total, Fair Value	1,553,103	1,468,317
Total Gross Unrealized Losses	$ (23,915)	$ (24,442)

Investment Securities (Interest

Investment Securities (Interest Income - Taxable/Non-Taxable Invest. Sec.) (Details 5) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Investments, Debt and Equity Securities [Abstract]
Interest Income from Investment Securities, Taxable	$ 109,912	$ 127,128	$ 125,379
Interest Income from Investment Securities, Non-Taxable	21,230	21,207	18,253
Total Interest Income from Investment Securities	$ 131,142	$ 148,335	$ 143,632

Investment Securities (Municipa

Investment Securities (Municipal Bond Narrative) (Details 6) $ in Millions	12 Months Ended
	Dec. 31, 2015USD ($)
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	$ 575.7
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	58.00%
Hawaiian Municipal Debt Securities | Investment Concentration Risk | HAWAII | General Obligation Bond
Schedule of Available-for-sale Securities [Line Items]
Concentration Risk, Percentage	77.00%
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	91.00%

Investment Securities (FHLB and

Investment Securities (FHLB and FRB Stocks) (Details 7) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Investments, Debt and Equity Securities [Abstract]
Federal Home Loan Bank Stock	$ 19,000	$ 47,075
Federal Reserve Bank Stock	19,836	19,299
Total	$ 38,836	$ 66,374

Investment Securities (Visa Cla

Investment Securities (Visa Class B Restricted Shares Narrative) (Details 8) $ in Thousands	12 Months Ended
	Dec. 31, 2015USD ($)shares	Dec. 31, 2014USD ($)	Dec. 31, 2013USD ($)
Net Investment Income [Line Items]
Net Gains on Sales of Investment Securities | $	$ 10,160	$ 8,063	$ 0
Visa Class B Restricted Securities
Net Investment Income [Line Items]
Conversion ratio to Class A shares	1.6483
Net Gains on Sales of Investment Securities | $	$ 10,100
Sale of investment securities, shares	95,000
Equity securities remaining, shares	288,714
Donation of Investment Securities, Shares	13,800
Visa Class A Unrestricted Securities
Net Investment Income [Line Items]
Equity securities remaining, shares	475,887

Loans and Leases and the Allo63

Loans and Leases and the Allowance for Loan and Lease Losses (Loans and Leases Portolio & Narrative) (Details 1) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Loan and lease portfolio
Loans and Leases	$ 7,878,985	$ 6,897,589	$ 6,095,387
Unearned income on loans and leases	47,300	57,000
Commercial loans and residential mortgage loans pledged to secure an undrawn FRB line of credit	1,000,000
Residential mortgage loans pledged under a blanket pledge arrangement to secure FHLB advance	1,700,000	1,100,000
Net gains related to sales of residential mortgage loans	5,900	2,400	8,700
Commercial
Loan and lease portfolio
Loans and Leases	3,153,852	2,828,128	2,528,433
Commercial | Commercial and Industrial
Loan and lease portfolio
Loans and Leases	1,115,168	1,055,243
Commercial | Commercial Mortgage
Loan and lease portfolio
Loans and Leases	1,677,147	1,437,513
Commercial | Construction
Loan and lease portfolio
Loans and Leases	156,660	109,183
Commercial | Lease Financing
Loan and lease portfolio
Loans and Leases	204,877	226,189
Consumer
Loan and lease portfolio
Loans and Leases	4,725,133	4,069,461	$ 3,566,954
Consumer | Residential Mortgage
Loan and lease portfolio
Loans and Leases	2,925,605	2,571,090
Consumer | Home Equity
Loan and lease portfolio
Loans and Leases	1,069,400	866,688
Consumer | Automobile
Loan and lease portfolio
Loans and Leases	381,735	323,848
Consumer | Other
Loan and lease portfolio
Loans and Leases	$ 348,393	$ 307,835

Loans and Leases and the Allo64

Loans and Leases and the Allowance for Loan and Lease Losses (Allowance for Loan and Lease Losses) (Details 2) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Allowance for Loan and Lease Losses:
Balance at the Beginning of Period	$ 108,688	$ 115,454	$ 128,857
Loans and Leases Charged-Off	(16,439)	(15,439)	(25,120)
Recoveries on Loans and Leases Previously Charged-Off	9,631	13,537	11,717
Net Loans and Leases Recovered (Charged-Off)	(6,808)	(1,902)	(13,403)
Provision for Credit Losses	1,000	(4,864)	0
Balance at End of Period	102,880	108,688	115,454
Allowance for Loan and Lease Losses:
Individually Evaluated for Impairment				$ 3,578	$ 5,948	$ 12,776
Collectively Evaluated for Impairment				99,302	102,740	102,678
Total	108,688	115,454	128,857	102,880	108,688	115,454
Recorded Investment in Loans and Leases:
Individually Evaluated for Impairment				66,697	64,747	77,115
Collectively Evaluated for Impairment				7,812,288	6,832,842	6,018,272
Total Loans and Leases				7,878,985	6,897,589	6,095,387
Commercial
Allowance for Loan and Lease Losses:
Balance at the Beginning of Period	64,551	71,446	72,704
Loans and Leases Charged-Off	(954)	(2,068)	(8,099)
Recoveries on Loans and Leases Previously Charged-Off	2,173	4,721	2,644
Net Loans and Leases Recovered (Charged-Off)	1,219	2,653	(5,455)
Provision for Credit Losses	(5,056)	(9,548)	4,197
Balance at End of Period	60,714	64,551	71,446
Allowance for Loan and Lease Losses:
Individually Evaluated for Impairment				205	2,387	9,054
Collectively Evaluated for Impairment				60,509	62,164	62,392
Total	64,551	71,446	72,704	60,714	64,551	71,446
Recorded Investment in Loans and Leases:
Individually Evaluated for Impairment				27,950	25,116	38,469
Collectively Evaluated for Impairment				3,125,902	2,803,012	2,489,964
Total Loans and Leases				3,153,852	2,828,128	2,528,433
Consumer
Allowance for Loan and Lease Losses:
Balance at the Beginning of Period	44,137	44,008	56,153
Loans and Leases Charged-Off	(15,485)	(13,371)	(17,021)
Recoveries on Loans and Leases Previously Charged-Off	7,458	8,816	9,073
Net Loans and Leases Recovered (Charged-Off)	(8,027)	(4,555)	(7,948)
Provision for Credit Losses	6,056	4,684	(4,197)
Balance at End of Period	42,166	44,137	44,008
Allowance for Loan and Lease Losses:
Individually Evaluated for Impairment				3,373	3,561	3,722
Collectively Evaluated for Impairment				38,793	40,576	40,286
Total	$ 44,137	$ 44,008	$ 56,153	42,166	44,137	44,008
Recorded Investment in Loans and Leases:
Individually Evaluated for Impairment				38,747	39,631	38,646
Collectively Evaluated for Impairment				4,686,386	4,029,830	3,528,308
Total Loans and Leases				$ 4,725,133	$ 4,069,461	$ 3,566,954

Loans and Leases and the Allo65

Loans and Leases and the Allowance for Loan and Lease Losses (Credit Quality Indicators & Narrative) (Details 3) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Recorded investment in loans and leases by class and by credit quality indicator
Total Recorded Investment in Loans and Leases	$ 7,878,985	$ 6,897,589	$ 6,095,387
Classified
Recorded investment in loans and leases by class and by credit quality indicator
Number of months up to which residential and home equity loans may be considered classified, even if they are current as to principal and interest (in months)	6 months
Residential Mortgage | Classified
Recorded investment in loans and leases by class and by credit quality indicator
Maximum current loan-to-value ratio for residential mortgage and home equity loans to be considered as pass (as a percent)	60.00%
Home Equity | Classified
Recorded investment in loans and leases by class and by credit quality indicator
Maximum current loan-to-value ratio for residential mortgage and home equity loans to be considered as pass (as a percent)	60.00%
Commercial
Recorded investment in loans and leases by class and by credit quality indicator
Total Recorded Investment in Loans and Leases	$ 3,153,852	2,828,128	2,528,433
Commercial | Pass
Recorded investment in loans and leases by class and by credit quality indicator
Total Recorded Investment in Loans and Leases	3,010,495	2,693,450
Commercial | Special Mention
Recorded investment in loans and leases by class and by credit quality indicator
Total Recorded Investment in Loans and Leases	71,906	62,463
Commercial | Classified
Recorded investment in loans and leases by class and by credit quality indicator
Total Recorded Investment in Loans and Leases	71,451	72,215
Commercial | Commercial and Industrial
Recorded investment in loans and leases by class and by credit quality indicator
Total Recorded Investment in Loans and Leases	1,115,168	1,055,243
Commercial | Commercial and Industrial | Pass
Recorded investment in loans and leases by class and by credit quality indicator
Total Recorded Investment in Loans and Leases	1,059,475	1,001,474
Commercial | Commercial and Industrial | Special Mention
Recorded investment in loans and leases by class and by credit quality indicator
Total Recorded Investment in Loans and Leases	28,076	17,364
Commercial | Commercial and Industrial | Classified
Recorded investment in loans and leases by class and by credit quality indicator
Total Recorded Investment in Loans and Leases	27,617	36,405
Commercial | Commercial Mortgage
Recorded investment in loans and leases by class and by credit quality indicator
Total Recorded Investment in Loans and Leases	1,677,147	1,437,513
Commercial | Commercial Mortgage | Pass
Recorded investment in loans and leases by class and by credit quality indicator
Total Recorded Investment in Loans and Leases	1,591,696	1,358,812
Commercial | Commercial Mortgage | Special Mention
Recorded investment in loans and leases by class and by credit quality indicator
Total Recorded Investment in Loans and Leases	43,674	45,082
Commercial | Commercial Mortgage | Classified
Recorded investment in loans and leases by class and by credit quality indicator
Total Recorded Investment in Loans and Leases	41,777	33,619
Commercial | Construction
Recorded investment in loans and leases by class and by credit quality indicator
Total Recorded Investment in Loans and Leases	156,660	109,183
Commercial | Construction | Pass
Recorded investment in loans and leases by class and by credit quality indicator
Total Recorded Investment in Loans and Leases	154,976	107,381
Commercial | Construction | Special Mention
Recorded investment in loans and leases by class and by credit quality indicator
Total Recorded Investment in Loans and Leases	80	0
Commercial | Construction | Classified
Recorded investment in loans and leases by class and by credit quality indicator
Total Recorded Investment in Loans and Leases	1,604	1,802
Commercial | Lease Financing
Recorded investment in loans and leases by class and by credit quality indicator
Total Recorded Investment in Loans and Leases	204,877	226,189
Commercial | Lease Financing | Pass
Recorded investment in loans and leases by class and by credit quality indicator
Total Recorded Investment in Loans and Leases	204,348	225,783
Commercial | Lease Financing | Special Mention
Recorded investment in loans and leases by class and by credit quality indicator
Total Recorded Investment in Loans and Leases	76	17
Commercial | Lease Financing | Classified
Recorded investment in loans and leases by class and by credit quality indicator
Total Recorded Investment in Loans and Leases	453	389
Consumer
Recorded investment in loans and leases by class and by credit quality indicator
Total Recorded Investment in Loans and Leases	4,725,133	4,069,461	$ 3,566,954
Consumer | Pass
Recorded investment in loans and leases by class and by credit quality indicator
Total Recorded Investment in Loans and Leases	$ 4,704,050	4,048,753
Consumer | Classified
Recorded investment in loans and leases by class and by credit quality indicator
Number of days past due for loans and leases in classified credit quality indicator	90 days
Total Recorded Investment in Loans and Leases	$ 21,083	20,708
Consumer | Residential Mortgage
Recorded investment in loans and leases by class and by credit quality indicator
Total Recorded Investment in Loans and Leases	2,925,605	2,571,090
Consumer | Residential Mortgage | Pass
Recorded investment in loans and leases by class and by credit quality indicator
Total Recorded Investment in Loans and Leases	$ 2,910,667	2,556,140
Consumer | Residential Mortgage | Classified
Recorded investment in loans and leases by class and by credit quality indicator
Number of days past due for loans and leases in classified credit quality indicator	90 days
Total Recorded Investment in Loans and Leases	$ 14,938	14,950
Consumer | Home Equity
Recorded investment in loans and leases by class and by credit quality indicator
Total Recorded Investment in Loans and Leases	1,069,400	866,688
Consumer | Home Equity | Pass
Recorded investment in loans and leases by class and by credit quality indicator
Total Recorded Investment in Loans and Leases	$ 1,064,253	862,258
Consumer | Home Equity | Classified
Recorded investment in loans and leases by class and by credit quality indicator
Number of days past due for loans and leases in classified credit quality indicator	90 days
Total Recorded Investment in Loans and Leases	$ 5,147	4,430
Consumer | Automobile
Recorded investment in loans and leases by class and by credit quality indicator
Total Recorded Investment in Loans and Leases	381,735	323,848
Consumer | Automobile | Pass
Recorded investment in loans and leases by class and by credit quality indicator
Total Recorded Investment in Loans and Leases	381,420	323,232
Consumer | Automobile | Classified
Recorded investment in loans and leases by class and by credit quality indicator
Total Recorded Investment in Loans and Leases	315	616
Consumer | Other
Recorded investment in loans and leases by class and by credit quality indicator
Total Recorded Investment in Loans and Leases	348,393	307,835
Consumer | Other | Pass
Recorded investment in loans and leases by class and by credit quality indicator
Total Recorded Investment in Loans and Leases	347,710	307,123
Consumer | Other | Classified
Recorded investment in loans and leases by class and by credit quality indicator
Total Recorded Investment in Loans and Leases	$ 683	$ 712

Loans and Leases and the Allo66

Loans and Leases and the Allowance for Loan and Lease Losses (Aging Analysis) (Details 4) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Non-Accrual	$ 27,977	$ 27,771
Total Past Due and Non-Accrual	70,958	64,184
Current	7,808,027	6,833,405
Total Loans and Leases	7,878,985	6,897,589	$ 6,095,387
Non-Accrual Loans and Leases that are Current	$ 7,108	8,826
Number of days non-accrual loans and leases are not past due	30 days
30 to 59 Days Past Due
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	$ 25,871	20,096
60 to 89 Days Past Due
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	9,536	7,656
Past Due 90 Days or More
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	7,574	8,661
Commercial
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Non-Accrual	9,298	9,833
Total Past Due and Non-Accrual	14,167	11,641
Current	3,139,685	2,816,487
Total Loans and Leases	3,153,852	2,828,128	2,528,433
Non-Accrual Loans and Leases that are Current	3,342	7,819
Commercial | 30 to 59 Days Past Due
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	4,483	1,450
Commercial | 60 to 89 Days Past Due
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	386	356
Commercial | Past Due 90 Days or More
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	0	2
Commercial | Commercial and Industrial
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Non-Accrual	5,829	9,088
Total Past Due and Non-Accrual	7,306	10,438
Current	1,107,862	1,044,805
Total Loans and Leases	1,115,168	1,055,243
Non-Accrual Loans and Leases that are Current	452	7,819
Commercial | Commercial and Industrial | 30 to 59 Days Past Due
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	1,118	992
Commercial | Commercial and Industrial | 60 to 89 Days Past Due
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	359	356
Commercial | Commercial and Industrial | Past Due 90 Days or More
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	0	2
Commercial | Commercial Mortgage
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Non-Accrual	3,469	745
Total Past Due and Non-Accrual	4,741	1,203
Current	1,672,406	1,436,310
Total Loans and Leases	1,677,147	1,437,513
Non-Accrual Loans and Leases that are Current	2,890	0
Commercial | Commercial Mortgage | 30 to 59 Days Past Due
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	1,245	458
Commercial | Commercial Mortgage | 60 to 89 Days Past Due
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	27	0
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	2,120	0
Current	154,540	109,183
Total Loans and Leases	156,660	109,183
Non-Accrual Loans and Leases that are Current	0	0
Commercial | Construction | 30 to 59 Days Past Due
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	2,120	0
Commercial | Construction | 60 to 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	204,877	226,189
Total Loans and Leases	204,877	226,189
Non-Accrual Loans and Leases that are Current	0	0
Commercial | Lease Financing | 30 to 59 Days Past Due
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	0	0
Commercial | Lease Financing | 60 to 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	18,679	17,938
Total Past Due and Non-Accrual	56,791	52,543
Current	4,668,342	4,016,918
Total Loans and Leases	4,725,133	4,069,461	$ 3,566,954
Non-Accrual Loans and Leases that are Current	3,766	1,007
Consumer | 30 to 59 Days Past Due
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	21,388	18,646
Consumer | 60 to 89 Days Past Due
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	9,150	7,300
Consumer | Past Due 90 Days or More
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	7,574	8,659
Consumer | Residential Mortgage
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Non-Accrual	14,598	14,841
Total Past Due and Non-Accrual	30,192	26,361
Current	2,895,413	2,544,729
Total Loans and Leases	2,925,605	2,571,090
Non-Accrual Loans and Leases that are Current	2,056	632
Consumer | Residential Mortgage | 30 to 59 Days Past Due
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	7,148	4,907
Consumer | Residential Mortgage | 60 to 89 Days Past Due
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	3,993	2,107
Consumer | Residential Mortgage | Past Due 90 Days or More
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	4,453	4,506
Consumer | Home Equity
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Non-Accrual	4,081	3,097
Total Past Due and Non-Accrual	11,553	11,815
Current	1,057,847	854,873
Total Loans and Leases	1,069,400	866,688
Non-Accrual Loans and Leases that are Current	1,710	375
Consumer | Home Equity | 30 to 59 Days Past Due
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	3,856	3,461
Consumer | Home Equity | 60 to 89 Days Past Due
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	1,906	2,661
Consumer | Home Equity | Past Due 90 Days or More
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	1,710	2,596
Consumer | Automobile
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Non-Accrual	0	0
Total Past Due and Non-Accrual	10,221	9,961
Current	371,514	313,887
Total Loans and Leases	381,735	323,848
Non-Accrual Loans and Leases that are Current	0	0
Consumer | Automobile | 30 to 59 Days Past Due
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	8,103	7,862
Consumer | Automobile | 60 to 89 Days Past Due
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	1,803	1,483
Consumer | Automobile | Past Due 90 Days or More
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	315	616
Consumer | Other
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Non-Accrual	0	0
Total Past Due and Non-Accrual	4,825	4,406
Current	343,568	303,429
Total Loans and Leases	348,393	307,835
Non-Accrual Loans and Leases that are Current	0	0
Consumer | Other | 30 to 59 Days Past Due
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	2,281	2,416
Consumer | Other | 60 to 89 Days Past Due
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	1,448	1,049
Consumer | Other | Past Due 90 Days or More
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	$ 1,096	$ 941

Loans and Leases and the Allo67

Loans and Leases and the Allowance for Loan and Lease Losses (Impaired Loans) (Details 5) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Impaired Loans Information:
Impaired Loans with No Related Allowance, Recorded Investment	$ 26,661	$ 17,932
Impaired Loans with No Related Allowance, Unpaid Principal Balance	43,723	23,182
Impaired Loans with Related Allowance, Recorded Investment	40,036	46,815
Impaired Loans with Related Allowance, Unpaid Principal Balance	45,749	59,073
Related Allowance for Loan Losses	3,578	5,948
Recorded Investment	66,697	64,747
Unpaid Principal Balance	89,472	82,255
Impaired Loans with No Related Allowance, Average Recorded Investment	21,757	21,272
Impaired Loans with No Related Allowance, Interest Income Recognized	780	636
Impaired Loans with Related Allowance, Average Recorded Investment	44,601	46,830
Impaired Loans with Related Allowance, Interest Income Recognized	1,816	1,662
Average Recorded Investment	66,358	68,102	$ 61,200
Interest Income Recognized	2,596	2,298	$ 1,800
Commercial
Impaired Loans Information:
Impaired Loans with No Related Allowance, Recorded Investment	26,661	17,932
Impaired Loans with No Related Allowance, Unpaid Principal Balance	43,723	23,182
Impaired Loans with Related Allowance, Recorded Investment	1,289	7,184
Impaired Loans with Related Allowance, Unpaid Principal Balance	1,289	13,784
Related Allowance for Loan Losses	205	2,387
Recorded Investment	27,950	25,116
Unpaid Principal Balance	45,012	36,966
Impaired Loans with No Related Allowance, Average Recorded Investment	21,757	21,266
Impaired Loans with No Related Allowance, Interest Income Recognized	780	636
Impaired Loans with Related Allowance, Average Recorded Investment	5,379	8,045
Impaired Loans with Related Allowance, Interest Income Recognized	98	118
Average Recorded Investment	27,136	29,311
Interest Income Recognized	878	754
Commercial | Commercial and Industrial
Impaired Loans Information:
Impaired Loans with No Related Allowance, Recorded Investment	14,650	9,763
Impaired Loans with No Related Allowance, Unpaid Principal Balance	28,212	15,013
Impaired Loans with Related Allowance, Recorded Investment	1,289	7,184
Impaired Loans with Related Allowance, Unpaid Principal Balance	1,289	13,784
Related Allowance for Loan Losses	205	2,387
Impaired Loans with No Related Allowance, Average Recorded Investment	12,589	11,167
Impaired Loans with No Related Allowance, Interest Income Recognized	406	318
Impaired Loans with Related Allowance, Average Recorded Investment	5,379	8,045
Impaired Loans with Related Allowance, Interest Income Recognized	98	118
Commercial | Commercial Mortgage
Impaired Loans Information:
Impaired Loans with No Related Allowance, Recorded Investment	10,407	6,480
Impaired Loans with No Related Allowance, Unpaid Principal Balance	13,907	6,480
Impaired Loans with No Related Allowance, Average Recorded Investment	7,521	8,529
Impaired Loans with No Related Allowance, Interest Income Recognized	268	225
Commercial | Construction
Impaired Loans Information:
Impaired Loans with No Related Allowance, Recorded Investment	1,604	1,689
Impaired Loans with No Related Allowance, Unpaid Principal Balance	1,604	1,689
Impaired Loans with No Related Allowance, Average Recorded Investment	1,647	1,570
Impaired Loans with No Related Allowance, Interest Income Recognized	106	93
Consumer
Impaired Loans Information:
Impaired Loans with Related Allowance, Recorded Investment	38,747	39,631
Impaired Loans with Related Allowance, Unpaid Principal Balance	44,460	45,289
Related Allowance for Loan Losses	3,373	3,561
Recorded Investment	38,747	39,631
Unpaid Principal Balance	44,460	45,289
Impaired Loans with No Related Allowance, Average Recorded Investment	0	6
Impaired Loans with No Related Allowance, Interest Income Recognized	0	0
Impaired Loans with Related Allowance, Average Recorded Investment	39,222	38,785
Impaired Loans with Related Allowance, Interest Income Recognized	1,718	1,544
Average Recorded Investment	39,222	38,791
Interest Income Recognized	1,718	1,544
Consumer | Residential Mortgage
Impaired Loans Information:
Impaired Loans with Related Allowance, Recorded Investment	28,981	32,331
Impaired Loans with Related Allowance, Unpaid Principal Balance	34,694	37,989
Related Allowance for Loan Losses	3,171	3,445
Impaired Loans with Related Allowance, Average Recorded Investment	30,895	31,998
Impaired Loans with Related Allowance, Interest Income Recognized	1,133	1,028
Consumer | Home Equity
Impaired Loans Information:
Impaired Loans with Related Allowance, Recorded Investment	1,089	1,012
Impaired Loans with Related Allowance, Unpaid Principal Balance	1,089	1,012
Related Allowance for Loan Losses	12	16
Impaired Loans with Related Allowance, Average Recorded Investment	1,137	964
Impaired Loans with Related Allowance, Interest Income Recognized	42	34
Consumer | Automobile
Impaired Loans Information:
Impaired Loans with Related Allowance, Recorded Investment	7,012	5,375
Impaired Loans with Related Allowance, Unpaid Principal Balance	7,012	5,375
Related Allowance for Loan Losses	143	66
Impaired Loans with Related Allowance, Average Recorded Investment	5,992	5,263
Impaired Loans with Related Allowance, Interest Income Recognized	432	433
Consumer | Other
Impaired Loans Information:
Impaired Loans with Related Allowance, Recorded Investment	1,665	913
Impaired Loans with Related Allowance, Unpaid Principal Balance	1,665	913
Related Allowance for Loan Losses	47	34
Impaired Loans with No Related Allowance, Average Recorded Investment	0	6
Impaired Loans with No Related Allowance, Interest Income Recognized	0	0
Impaired Loans with Related Allowance, Average Recorded Investment	1,198	560
Impaired Loans with Related Allowance, Interest Income Recognized	$ 111	$ 49

Loans and Leases and the Allo68

Loans and Leases and the Allowance for Loan and Lease Losses (Troubled Debt Restrucuring & Narrative) (Details 6) $ in Thousands	12 Months Ended
	Dec. 31, 2015USD ($)contract	Dec. 31, 2014USD ($)contract
Loans and Leases and the Allowance for Loan and Lease Losses
Loans modified in a TDR	$ 65,000	$ 60,200
Available commitments under Revolving Credit Lines, Modified as TDR	$ 0
Loans Modified as a TDR
Number of Contracts | contract	388	254
Recorded Investment (as of period end)	$ 19,438	$ 20,305
Increase in Allowance (as of period end)	$ 216	$ 2,697
Residential Mortgage | Maximum
Loans and Leases and the Allowance for Loan and Lease Losses
Period of time loan being fully amortized	40 years
Land Loans | Maximum
Loans and Leases and the Allowance for Loan and Lease Losses
Period of time loan being fully amortized	360 months
Extending balloon payments	5 years
Commercial
Loans Modified as a TDR
Number of Contracts | contract	34	20
Recorded Investment (as of period end)	$ 9,721	$ 10,578
Increase in Allowance (as of period end)	$ 1	$ 2,360
Commercial | Commercial and Industrial
Loans Modified as a TDR
Number of Contracts | contract	30	19
Recorded Investment (as of period end)	$ 5,414	$ 10,263
Increase in Allowance (as of period end)	$ 1	$ 2,360
Commercial | Commercial Mortgage
Loans Modified as a TDR
Number of Contracts | contract	4	1
Recorded Investment (as of period end)	$ 4,307	$ 315
Increase in Allowance (as of period end)	$ 0	$ 0
Consumer
Loans Modified as a TDR
Number of Contracts | contract	354	234
Recorded Investment (as of period end)	$ 9,717	$ 9,727
Increase in Allowance (as of period end)	$ 215	$ 337
Consumer | Residential Mortgage
Loans Modified as a TDR
Number of Contracts | contract	13	17
Recorded Investment (as of period end)	$ 4,255	$ 6,329
Increase in Allowance (as of period end)	$ 99	$ 278
Consumer | Home Equity
Loans Modified as a TDR
Number of Contracts | contract	3	2
Recorded Investment (as of period end)	$ 367	$ 156
Increase in Allowance (as of period end)	$ 4	$ 2
Consumer | Automobile
Loans Modified as a TDR
Number of Contracts | contract	170	131
Recorded Investment (as of period end)	$ 3,996	$ 2,576
Increase in Allowance (as of period end)	$ 81	$ 32
Consumer | Other
Loans Modified as a TDR
Number of Contracts | contract	168	84
Recorded Investment (as of period end)	$ 1,099	$ 666
Increase in Allowance (as of period end)	$ 31	$ 25

Loans and Leases and the Allo69

Loans and Leases and the Allowance for Loan and Lease Losses (Troubled Debt Restructuring's that Defaulted During the Period) (Details 7) $ in Thousands	12 Months Ended
	Dec. 31, 2015USD ($)contract	Dec. 31, 2014USD ($)contract
Information related to loans modified as a TDR
Number of Contracts | contract	37	18
Recorded Investment (as of period end) | $	$ 6,711	$ 1,359
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 | contract	2	4
Recorded Investment (as of period end) | $	$ 4,924	$ 728
Commercial | Commercial and Industrial
Information related to loans modified as a TDR
Number of Contracts | contract	2	4
Recorded Investment (as of period end) | $	$ 4,924	$ 728
Consumer
Information related to loans modified as a TDR
Number of Contracts | contract	35	14
Recorded Investment (as of period end) | $	$ 1,787	$ 631
Consumer | Residential Mortgage
Information related to loans modified as a TDR
Number of Contracts | contract	4	2
Recorded Investment (as of period end) | $	$ 1,449	$ 506
Consumer | Automobile
Information related to loans modified as a TDR
Number of Contracts | contract	10	6
Recorded Investment (as of period end) | $	$ 220	$ 77
Consumer | Other
Information related to loans modified as a TDR
Number of Contracts | contract	21	6
Recorded Investment (as of period end) | $	$ 118	$ 48

Loans and Leases and the Allo70

Loans and Leases and the Allowance for Loan and Lease Losses (Foreclosure Proceedings Narrative) (Details 8) $ in Millions	Dec. 31, 2015USD ($)
Loans and Leases and Allowance for Loan and Lease Losses [Abstract]
Mortgage Loans in Process of Foreclosure, Amount	$ 8.5

Loans and Leases and the Allo71

Loans and Leases and the Allowance for Loan and Lease Losses (Related Party Loans Narrative) (Details 9) - USD ($) $ in Millions	Dec. 31, 2015	Dec. 31, 2014
Loans and Leases and Allowance for Loan and Lease Losses [Abstract]
Due from Related Parties	$ 16.7	$ 17

Mortgage Servicing Rights (Narr

Mortgage Servicing Rights (Narrative) (Details 1) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Transfers and Servicing of Financial Assets [Abstract]
Residential Mortgage Loans Serviced for Third Parties	$ 2,700		$ 3,100
Servicing income, including late and ancillary fees	$ 7.2	$ 7.9	$ 8

Mortgage Servicing Rights (Fair

Mortgage Servicing Rights (Fair value method rollforward) (Details 2) - Mortgage Servicing Rights - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Change in fair value of the mortgage servicing rights accounted for under the fair value measurement method
Balance at Beginning of Year	$ 2,604	$ 3,826	$ 4,761
Changes in Fair Value:
Due to Change in Valuation Assumptions	(251)	(869)	127
Due to Payoffs	(383)	(353)	(1,062)
Total Changes in Fair Value of Mortgage Servicing Rights	(634)	(1,222)	(935)
Balance at End of Year	$ 1,970	$ 2,604	$ 3,826

Mortgage Servicing Rights (Amor

Mortgage Servicing Rights (Amortization method rollforward) (Details 3) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Valuation Allowance [Roll Forward]
Balance at Beginning of Year	$ (57)
Balance at End of Year	(21)	$ (57)
Mortgage Servicing Rights
Change in Carrying Value of Mortgage Servicing Rights Accounted for Under the Amortization Method, Net of a Valuation Allowance
Balance at beginning of Year	22,091	24,297	$ 20,479
Servicing Rights that Resulted From Asset Transfers	1,737	747	6,351
Amortization	(2,832)	(2,896)	(2,533)
Valuation Allowance Provision	36	(57)	0
Balance at end of Year	21,032	22,091	24,297
Valuation Allowance [Roll Forward]
Balance at Beginning of Year	(57)	0	0
Valuation Allowance Provision	36	(57)	0
Balance at End of Year	(21)	(57)	0
Fair Value:
Balance at Beginning of Year	22,837	30,100	23,143
Balance at End of Year	$ 24,804	$ 22,837	$ 30,100

Mortgage Servicing Rights (Key

Mortgage Servicing Rights (Key assumptions) (Details 4) - Mortgage Servicing Rights	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Key assumptions used in estimating the fair value of mortgage servicing rights
Weighted-Average Constant Prepayment Rate (as a percent)	9.10%	11.62%
Weighted-Average Life (in years)	7 years 4 months 26 days	6 years 3 months 12 days
Weighted-Average Note Rate (as a percent)	4.23%	4.28%
Weighted-Average Discount Rate (as a percent)	9.38%	10.61%

Mortgage Servicing Rights (Sens

Mortgage Servicing Rights (Sensitivity analysis) (Details 5) - Mortgage Servicing Rights - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Constant Prepayment Rate
Decrease in fair value from 25 basis points ("bps") adverse change	$ (285)	$ (265)
Decrease in fair value from 50 bps adverse change	(566)	(524)
Discount Rate
Decrease in fair value from 25 bps adverse change	(292)	(250)
Decrease in fair value from 50 bps adverse change	$ (577)	$ (495)

Premises and Equipment (Details

Premises and Equipment (Details 1) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Premises and Equipment
Cost	$ 440,216	$ 435,752
Accumulated Depreciation and Amortization	(329,017)	(325,898)
Net Book Value	111,199	109,854
Depreciation and amortization (including capital lease amortization) included in noninterest expense	12,800	12,400	$ 12,100
Premises
Premises and Equipment
Cost	322,552	322,536
Accumulated Depreciation and Amortization	(238,912)	(235,464)
Net Book Value	83,640	87,072
Impairment charge	0	0	$ 0
Equipment
Premises and Equipment
Cost	111,071	106,623
Accumulated Depreciation and Amortization	(86,176)	(86,577)
Net Book Value	24,895	20,046
Capital leases
Premises and Equipment
Cost	6,593	6,593
Accumulated Depreciation and Amortization	(3,929)	(3,857)
Net Book Value	$ 2,664	$ 2,736

Other Assets (Details 1)

Other Assets (Details 1) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Components of Other Assets
Federal Home Loan Bank and Federal Reserve Bank Stock	$ 38,836	$ 66,374
Derivative Financial Instruments	13,967	16,515
Low-Income Housing and Other Equity Investments	79,033	77,495
Deferred Compensation Plan Assets	20,262	18,794
Prepaid Expenses	8,262	7,787
Accounts Receivable	12,539	13,405
Other	26,493	25,518
Total	$ 199,392	$ 225,888

Time Deposits (Details 1)

Time Deposits (Details 1) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Time deposits classified according to the contractual maturities
2,016	$ 933,273
2,017	161,913
2,018	34,467
2,019	15,293
2,020	17,667
Thereafter	15,038
Total	1,177,651	$ 1,434,001
Time deposits with balances of $100,000 or more, classified according to the contractual maturities
Three Months or Less	422,466
Over Three Months through Six Months	202,100
Over Six Months through Twelve Months	164,806
Over Twelve Months	139,767
Total	929,139	1,200,000
Government entity deposits	$ 1,200,000	$ 1,300,000

Borrowings (Short-term borrowin

Borrowings (Short-term borrowings) (Details 1) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Short-term Borrowings
Securities Sold Under Agreements to Repurchase	$ 628,857	$ 688,601
Funds Purchased
Short-term Borrowings
Amounts Outstanding	$ 7,333	$ 8,459
Weighted Average Interest Rate (as a percent)	0.14%	0.14%
Securities Sold Under Agreements to Repurchase
Short-term Borrowings
Amounts Outstanding	$ 3,992	$ 7,700
Weighted Average Interest Rate (as a percent)	0.06%	0.10%
Long-term Repurchase Agreements with Government Entities
Short-term Borrowings
Securities Sold Under Agreements to Repurchase	$ 49,900	$ 80,900
Long-term Repurchase Agreements with Private Institutions
Short-term Borrowings
Securities Sold Under Agreements to Repurchase	$ 575,000	$ 600,000

Borrowings (Narrative) (Details

Borrowings (Narrative) (Details 2) $ in Thousands	Dec. 31, 2015USD ($)DY	Dec. 31, 2014USD ($)
Securities sold under repurchase agreements
Securities Sold Under Agreements to Repurchase	$ 628,857	$ 688,601
Long-term Repurchase Agreements with Government Entities
Securities sold under repurchase agreements
Securities Sold Under Agreements to Repurchase	$ 49,900	80,900
Repurchase agreements, Weighted average interest rate (as a percent)	0.37%
Repurchase agreements, Weighted average maturity period (in days or years) | D	56
Long-term Repurchase Agreements with Private Institutions
Securities sold under repurchase agreements
Securities Sold Under Agreements to Repurchase	$ 575,000	$ 600,000
Repurchase agreements, Weighted average interest rate (as a percent)	4.22%
Repurchase agreements, Weighted average maturity period (in days or years) | Y	3.6
Repurchase agreements, Decreased weighted average maturity period if agreements terminated at earlier specified dates (in years) | Y	1.5

Other Debt (Details 1)

Other Debt (Details 1) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Long-Term Debt
Federal Home Loan Bank, Advances, Weighted Average Interest Rate (as a percent)	1.15%
Total	$ 245,786	$ 173,912
Maximum percentage of the total assets that can be borrowed from the FHLB by the entity	35.00%
Federal Home Loan Bank Advance
Long-Term Debt
Other Debt	$ 225,000	150,000
Undrawn line of credit with the FHLB or FRB	1,100,000
Non-Recourse Debt
Long-Term Debt
Other Debt	$ 9,938	13,005
Non-recourse Debt, Stated fixed interest rate (as a percent)	6.30%
Capital Lease Obligations
Long-Term Debt
Capital Lease Obligations	$ 10,848	$ 10,907
Lease term (in years)	60 years
Fixed lease payments through December 2022	$ 800
Federal Reserve Bank Advance
Long-Term Debt
Undrawn line of credit with the FHLB or FRB	$ 560,800

Other Debt (Excluding capital l

Other Debt (Excluding capital lease obligation, annual maturities) (Details 2) - Non-Recourse Debt and Federal Home Loan Bank Advance $ in Thousands	Dec. 31, 2015USD ($)
Annual maturities of long term debt exclusive of capital lease obligations
2,016	$ 52,785
2,017	0
2,018	175,000
2,019	0
2,020	3,464
Thereafter	3,689
Total	$ 234,938

Shareholders' Equity (Capital)

Shareholders' Equity (Capital) (Details 1) $ / shares in Units, $ in Thousands	2 Months Ended	12 Months Ended			174 Months Ended
	Feb. 17, 2016USD ($)$ / sharesshares	Dec. 31, 2015USD ($)Y$ / sharesshares	Dec. 31, 2014USD ($)	Dec. 31, 2013USD ($)	Dec. 31, 2015USD ($)$ / sharesshares	Dec. 31, 2012USD ($)
Minimum required capital amounts and ratios for well capitalized institutions and the actual capital amounts [Line Items]
Shareholders' Equity		$ 1,116,260	$ 1,055,086	$ 1,011,976	$ 1,116,260	$ 1,021,665
Common Equity Tier One Capital		1,112,598			1,112,598
Tier 1 Capital		1,112,598	1,039,631		1,112,598
Total Capital		$ 1,212,245	$ 1,128,416		$ 1,212,245
Well Capitalized Minimum Common Equity Tier One Ratio (as a percent)		6.50%			6.50%
Common Equity Tier One Ratio		13.97%			13.97%
Well Capitalized Minimum Tier 1 Capital Ratio (as a percent)		8.00%	6.00%		8.00%
Tier 1 Capital Ratio (as a percent)		13.97%	14.69%		13.97%
Well Capitalized Minimum Total Capital Ratio (as a percent)		10.00%	10.00%		10.00%
Total Capital Ratio (as a percent)		15.22%	15.94%		15.22%
Well Capitalized Minimum Tier 1 Leverage Ratio (as a percent)		5.00%	5.00%		5.00%
Tier 1 Leverage Ratio (as a percent)		7.26%	7.13%		7.26%
Dividends
Number of prior calendar years considered for payment of dividends in excess of the sum of net income | Y		2
Common Stock Repurchase Program
Number of shares of common stock repurchased | shares		802,255			52,800,000
Amount returned to shareholders on stock repurchase		$ 52,981	$ 64,046	$ 39,655	$ 2,000,000
Average cost of shares repurchased (in dollars per share) | $ / shares		$ 62.61			$ 37.35
Treasury Stock Value Acquired Cost Method Share Repurchase Program		$ 50,200
Bank
Minimum required capital amounts and ratios for well capitalized institutions and the actual capital amounts [Line Items]
Shareholders' Equity		1,036,355	975,723		$ 1,036,355
Common Equity Tier One Capital		1,043,070			1,043,070
Tier 1 Capital		1,043,070	974,397		1,043,070
Total Capital		$ 1,142,573	$ 1,063,085		$ 1,142,573
Common Equity Tier One Ratio		13.12%			13.12%
Tier 1 Capital Ratio (as a percent)		13.12%	13.78%		13.12%
Total Capital Ratio (as a percent)		14.37%	15.04%		14.37%
Tier 1 Leverage Ratio (as a percent)		6.81%	6.69%		6.81%
Subsequent Event
Common Stock Repurchase Program
Number of shares of common stock repurchased | shares	149,500
Amount returned to shareholders on stock repurchase	$ 8,900
Average cost of shares repurchased (in dollars per share) | $ / shares	$ 59.50

Shareholders' Equity (AOCI tax

Shareholders' Equity (AOCI tax effect) (Details 2) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Other Comprehensive Income, Before Tax:
Net Unrealized Gains (Losses) Arising During the Period	$ (5,448)	$ 28,609	$ (105,842)
(Gain) Loss on Sale, before Tax	(190)	(64)
Amortization of Unrealized Holding (Gains) Losses on HTM Securities	2,136	(703)	(8,386)
Net Unrealized Gains (Losses) on Investment Securities	(3,502)	27,842	(114,228)
Net Actuarial Gains (Losses) Arising During the Period	7,335	(20,286)	12,132
Amortization of Net Actuarial Losses (Gains)	1,624	1,256	1,688
Amortization of Prior Service Credit, before tax	(322)	(322)	(322)
Defined Benefit Plans, Net	8,637	(19,352)	13,498
Other Comprehensive Income (Loss)	5,135	8,490	(100,730)
Other Comprehensive Income, Tax Effect:
Net Unrealized Gains Arising During the Period	(2,138)	11,286	(41,715)
(Gain) Loss on Sale, Tax	(75)	(25)
Amortization of Unrealized Holding (Gains) Losses on HTM Securities	836	(277)	(3,307)
Net Unrealized Gains (Losses) on Investment Securities	(1,377)	10,984	(45,022)
Net Actuarial Gains (Losses) Arising During the Period	2,869	(8,000)	4,785
Amortization of Net Actuarial Losses (Gains)	641	496	665
Amortization of Prior Service Credit	(127)	(127)	(127)
Defined Benefit Plans, Net	3,383	(7,631)	5,323
Other Comprehensive Income (Loss)	2,006	3,353	(39,699)
Other Comprehensive Income, Net of Tax:
Net Unrealized Gains (Losses) Arising During the Period	(3,310)	17,323	(64,127)
(Gain) Loss on Sale, Net of Tax	(115)	(39)
Amortization of Unrealized Holding (Gains) Losses on HTM Securities after Tax	1,300	(426)	(5,079)
Net Unrealized Gains (Losses) on Investment Securities	(2,125)	16,858	(69,206)
Net Actuarial Losses Arising During the Period	4,466	(12,286)	7,347
Amortization of Net Actuarial Losses (Gains)	983	760	1,023
Amortization of Prior Service Credit	(195)	(195)	(195)
Defined Benefit Plans, Net	5,254	(11,721)	8,175
Other Comprehensive Income (Loss)	$ 3,129	$ 5,137	$ (61,031)

Shareholders' Equity (AOCI roll

Shareholders' Equity (AOCI rollforward) (Details 3) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance at Beginning of Period	$ 1,055,086	$ 1,011,976	$ 1,021,665
Other Comprehensive Income (Loss)	3,129	5,137	(61,031)
Balance at End of Period	1,116,260	1,055,086	1,011,976
Defined Benefit Plans
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance at Beginning of Period	(34,115)	(22,394)	(30,569)
Other Comprehensive Income (Loss) Before Reclassification	4,466	(12,286)	7,347
Amounts Reclassified from Accumulated Other Comprehensive Income	788	565	828
Other Comprehensive Income (Loss)	5,254	(11,721)	8,175
Balance at End of Period	(28,861)	(34,115)	(22,394)
Accumulated Other Comprehensive Income (Loss)
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance at Beginning of Period	(26,686)	(31,823)	29,208
Other Comprehensive Income (Loss) Before Reclassification	1,156	5,037	(56,780)
Amounts Reclassified from Accumulated Other Comprehensive Income	1,973	100	(4,251)
Other Comprehensive Income (Loss)	3,129	5,137	(61,031)
Balance at End of Period	(23,557)	(26,686)	(31,823)
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	15,984	(1,300)	45,996
Other Comprehensive Income (Loss) Before Reclassification	(3,310)	17,323	(47,296)
Amounts Reclassified from Accumulated Other Comprehensive Income	(115)	(39)	0
Other Comprehensive Income (Loss)	(3,425)	17,284	(47,296)
Balance at End of Period	12,559	15,984	(1,300)
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	(8,555)	(8,129)	13,781
Other Comprehensive Income (Loss) Before Reclassification	0	0	(16,831)
Amounts Reclassified from Accumulated Other Comprehensive Income	1,300	(426)	(5,079)
Other Comprehensive Income (Loss)	1,300	(426)	(21,910)
Balance at End of Period	$ (7,255)	$ (8,555)	$ (8,129)

Shareholders' Equity (Income st

Shareholders' Equity (Income statement reclass) (Details 4) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Provision for Income Taxes	$ (70,498)	$ (74,596)	$ (63,659)
Salaries and Benefits	(191,963)	(183,028)	(184,211)
Net Income	160,704	163,042	150,502
Reclassification out of Accumulated Other Comprehensive Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net Income	(1,973)	(100)	4,251
Amortization of Unrealized Gains(Losses) of Investment Securities Transferred from AFS to HTM [Member] | Reclassification out of Accumulated Other Comprehensive Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Investment Income, Interest	(2,136)	703	8,386
Provision for Income Taxes	836	(277)	(3,307)
Net Income	(1,300)	426	5,079
Sale of Investment Securities Available-for-Sale | Reclassification out of Accumulated Other Comprehensive Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Provision for Income Taxes	(75)	(25)	0
Available-for-sale Securities, Gross Realized Gain (Loss)	190	64	0
Net Income	115	39	0
Amortization of Defined Benefit Pension Items | Reclassification out of Accumulated Other Comprehensive Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Provision for Income Taxes	514	369	538
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest	(1,302)	(934)	(1,366)
Net Income	(788)	(565)	(828)
Prior Service Credit | Reclassification out of Accumulated Other Comprehensive Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Salaries and Benefits	322	322	322
Net Actuarial Losses | Reclassification out of Accumulated Other Comprehensive Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Salaries and Benefits	$ (1,624)	$ (1,256)	$ (1,688)

Earnings Per Share (Details 1)

Earnings Per Share (Details 1) - shares	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Earnings Per Share [Abstract]
Denominator for Basic Earnings Per Share (in shares)	43,217,818	43,899,208	44,380,948
Dilutive Effect of Equity Based Awards (in shares)	237,059	226,248	191,777
Denominator for Diluted Earnings Per Share (in shares)	43,454,877	44,125,456	44,572,725
Antidilutive Stock Options and Restricted Stock Outstanding (in shares)	0	0	25,101

Business Segments (Details 1)

Business Segments (Details 1) $ in Thousands	12 Months Ended
	Dec. 31, 2015USD ($)atmbranch	Dec. 31, 2014USD ($)	Dec. 31, 2013USD ($)
Business segment financial information
Federal and State Effective Tax Rate used for Segment Reporting	37.00%
Net Interest Income	$ 394,087	$ 379,656	$ 358,907
Provision for Credit Losses	1,000	(4,864)	0
Net Interest Income After Provision for Credit Losses	393,087	384,520	358,907
Noninterest Income	186,219	180,017	186,223
Noninterest Expense	(348,104)	(326,899)	(330,969)
Income Before Provision for Income Taxes	231,202	237,638	214,161
Provision for Income Taxes	(70,498)	(74,596)	(63,659)
Net Income	160,704	163,042	150,502
Total Assets	$ 15,455,016	14,787,208	14,084,280
Retail Banking
Business segment financial information
Number of branch locations through which products and services are delivered to customers | branch	70
Number of ATM's through which products and services are delivered to customers | atm	456
Net Interest Income	$ 202,259	178,480	160,869
Provision for Credit Losses	8,033	4,783	8,565
Net Interest Income After Provision for Credit Losses	194,226	173,697	152,304
Noninterest Income	82,391	79,562	87,493
Noninterest Expense	(199,572)	(196,254)	(199,222)
Income Before Provision for Income Taxes	77,045	57,005	40,575
Provision for Income Taxes	(27,330)	(21,079)	(15,496)
Net Income	49,715	35,926	25,079
Total Assets	4,680,888	4,088,878	3,627,700
Commercial Banking
Business segment financial information
Net Interest Income	143,944	119,655	99,733
Provision for Credit Losses	(1,165)	(2,369)	4,918
Net Interest Income After Provision for Credit Losses	145,109	122,024	94,815
Noninterest Income	21,804	23,635	27,488
Noninterest Expense	(76,891)	(66,760)	(65,189)
Income Before Provision for Income Taxes	90,022	78,899	57,114
Provision for Income Taxes	(31,457)	(26,952)	(18,877)
Net Income	58,565	51,947	38,237
Total Assets	3,099,132	2,787,537	2,458,001
Investment Services
Business segment financial information
Net Interest Income	18,494	15,238	14,199
Provision for Credit Losses	(43)	(313)	(71)
Net Interest Income After Provision for Credit Losses	18,537	15,551	14,270
Noninterest Income	58,835	57,618	59,336
Noninterest Expense	(57,852)	(54,571)	(55,002)
Income Before Provision for Income Taxes	19,520	18,598	18,604
Provision for Income Taxes	(7,222)	(6,894)	(6,883)
Net Income	12,298	11,704	11,721
Total Assets	274,469	202,645	189,421
Treasury and Other
Business segment financial information
Net Interest Income	29,390	66,283	84,106
Provision for Credit Losses	(5,825)	(6,965)	(13,412)
Net Interest Income After Provision for Credit Losses	35,215	73,248	97,518
Noninterest Income	23,189	19,202	11,906
Noninterest Expense	(13,789)	(9,314)	(11,556)
Income Before Provision for Income Taxes	44,615	83,136	97,868
Provision for Income Taxes	(4,489)	(19,671)	(22,403)
Net Income	40,126	63,465	75,465
Total Assets	$ 7,400,527	$ 7,708,148	$ 7,809,158

Employee Benefits (Defined cont

Employee Benefits (Defined contribution plans) (Details1 )	12 Months Ended
	Dec. 31, 2015USD ($)components	Dec. 31, 2014USD ($)	Dec. 31, 2013USD ($)
Defined Contribution Plans
Number of company contribution components, Retirement Savings Plan | components	3
Fixed percentage of employer's contribution based on eligible compensation	3.00%
Employee contribution limit per calendar year (as a percent of compensation)	50.00%
Employee's contribution matched by employer (in dollars)	$ 1
Employer match of employee contributions upto 2% of eligible compensation	$ 1.25
Percentage of eligible compensation, matched $1.25 for by employer for each dollar amount contributed by participants	2.00%
Employer match of employee contributions over 2% upto 5% of eligible compensation	$ 0.50
Percentage of eligible compensation, matched $0.50 for by employer for each dollar amount contributed by participants, low end of range	2.00%
Percentage of eligible compensation, matched $0.50 for by employer for each dollar amount contributed by participants, high end of range	5.00%
Total expense for all components of the company's defined contribution plans	$ 12,000,000	$ 12,100,000	$ 11,200,000

Employee Benefits (Defined bene

Employee Benefits (Defined benefit and postretirement benefit plans) (Details 2)	12 Months Ended
	Dec. 31, 2015USD ($)planY	Dec. 31, 2014USD ($)	Dec. 31, 2013USD ($)
Pension Benefits
Employee benefits
Number of defined benefit plans | plan	2
Reconciliation of changes in benefit obligations
Benefit Obligation at Beginning of Year	$ 114,707,000	$ 98,085,000
Service Cost	0	0	$ 0
Interest Cost	4,655,000	4,975,000	4,514,000
Actuarial Losses (Gains)	(7,647,000)	16,954,000
Benefit Obligation at End of Year	105,993,000	114,707,000	98,085,000
Reconciliation of changes in fair value of plan assets
Fair Value of Plan Assets at Beginning of Year	90,154,000	90,535,000
Actual Return on Plan Assets	(1,058,000)	4,442,000
Employer Contributions	484,000	484,000
Employer Benefits Paid	(5,722,000)	(5,307,000)
Fair Value of Plan Assets at End of Year	83,858,000	90,154,000	90,535,000
Funded Status at End of Year	(22,135,000)	(24,553,000)
Amounts Recognized in Accumulated Other Comprehensive Income (Loss), Net of Tax
Net Actuarial Gains (Losses)	33,239,000	35,254,000
Prior Service Credit	0	0
Total Amounts Recognized in Accumulated Other Comprehensive Income, Net of Tax	$ (33,239,000)	(35,254,000)
Postretirement Benefits
Employee benefits
Retirees' age and above which Medicare supplemental plan subsidy is provided (in years) | Y	65
Limit on annual credit provided in HRA to eligible employees	$ 1,200
Reconciliation of changes in benefit obligations
Benefit Obligation at Beginning of Year	30,804,000	27,296,000
Service Cost	621,000	586,000	670,000
Interest Cost	1,155,000	1,325,000	1,188,000
Actuarial Losses (Gains)	(5,783,000)	2,674,000
Benefit Obligation at End of Year	25,307,000	30,804,000	27,296,000
Reconciliation of changes in fair value of plan assets
Fair Value of Plan Assets at Beginning of Year	0	0
Actual Return on Plan Assets	0	0
Employer Contributions	1,490,000	1,077,000
Employer Benefits Paid	(1,490,000)	(1,077,000)
Fair Value of Plan Assets at End of Year	0	0	$ 0
Funded Status at End of Year	(25,307,000)	(30,804,000)
Participants contributions	600,000	700,000
Amounts Recognized in Accumulated Other Comprehensive Income (Loss), Net of Tax
Net Actuarial Gains (Losses)	(3,768,000)	(333,000)
Prior Service Credit	610,000	806,000
Total Amounts Recognized in Accumulated Other Comprehensive Income, Net of Tax	4,378,000	1,139,000
Excess retirement Plan | Pension Benefits
Employee benefits
Accumulated benefit obligation	$ 4,100,000	$ 4,800,000

Employee Benefits (Components f

Employee Benefits (Components fo net Periodic benefit cost) (Details 3) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Pension Benefits
Net periodic benefit cost for pension plans and the postretirement benefit plan
Service Cost	$ 0	$ 0	$ 0
Interest Cost	4,655	4,975	4,514
Expected Return on Plan Assets	(5,222)	(5,100)	(5,250)
Amortization of Prior Service Credit	0	0	0
Amortization of Net Actuarial Losses (Gains)	1,713	1,408	1,688
Net Periodic Benefit Cost	1,146	$ 1,283	$ 952
Estimated amount expected to be amortized from accumulated other comprehensive income (loss) into net periodic benefit cost in next fiscal year
Net actuarial loss	$ 1,600
Weighted average assumptions used to determine the benefit obligations
Discount Rate (as a percent)	4.70%	4.25%
Weighted average assumptions used to determine the net periodic benefit cost
Discount rate (as a percent)	4.25%	5.22%	4.29%
Expected Long-Term Rate of Return on Plan Assets (as a percent)	6.00%	6.00%	6.00%
Health Care Cost Trend Rate (as a percent)	0.00%	0.00%	0.00%
Expected benefits to be paid in each of the next five years and in the aggregate for the five years thereafter
2,015	$ 6,139
2,016	6,345
2,017	6,494
2,018	6,752
2,019	6,918
Years 2020-2024	35,744
Defined Benefit Plans, Estimated Future Employer Contributions in Next Fiscal Year	500
Postretirement Benefits
Net periodic benefit cost for pension plans and the postretirement benefit plan
Service Cost	621	$ 586	$ 670
Interest Cost	1,155	1,325	1,188
Expected Return on Plan Assets	0	0	0
Amortization of Prior Service Credit	(322)	(322)	(322)
Amortization of Net Actuarial Losses (Gains)	(89)	(152)	0
Net Periodic Benefit Cost	1,365	$ 1,437	$ 1,536
Estimated amount expected to be amortized from accumulated other comprehensive income (loss) into net periodic benefit cost in next fiscal year
Net gain and prior service credit	$ 600
Weighted average assumptions used to determine the benefit obligations
Discount Rate (as a percent)	4.74%	4.28%
Health Care Cost Trend Rate Assumed For Next Year (as a percent)	6.70%	7.00%
Ultimate health care cost trend rate (as a percent)	4.50%
Year that reaches the ultimate health care cost trend rate	2,027
Weighted average assumptions used to determine the net periodic benefit cost
Discount rate (as a percent)	4.28%	5.22%	4.29%
Expected Long-Term Rate of Return on Plan Assets (as a percent)	0.00%	0.00%	0.00%
Health Care Cost Trend Rate (as a percent)	7.00%	7.20%	7.70%
A one percent change in the health care cost trend rate assumption impact on cost
Effect of one percentage increase on the total of service and interest cost components of net periodic postretirement benefit cost	$ 147
Effect of one percentage increase on the postretirement benefit obligation	2,004
Effect of one percentage decrease on the total of service and interest cost components of net periodic postretirement benefit cost	(152)
Effect of one percentage decrease on the postretirement benefit obligation	(1,756)
Expected benefits to be paid in each of the next five years and in the aggregate for the five years thereafter
2,015	1,001
2,016	1,004
2,017	988
2,018	1,016
2,019	1,081
Years 2020-2024	6,992
Defined Benefit Plans, Estimated Future Employer Contributions in Next Fiscal Year	$ 1,000

Employee Benefits (Retirement p

Employee Benefits (Retirement plan assets) (Details 4)	12 Months Ended
	Dec. 31, 2015D
Asset allocation guidelines
Fixed income securities, percentage of variable component in strategic targets (as a percent)	20.00%
Effect of market fluctuations in cash flow on target allocation limits (as a percent)	5.00%
Period during which asset allocation is expected to conform to range limits (in days)	90
S&P 500 Index
Defined benefit pension plan disclosure
Performance benchmark (as a percent)	35.00%
MSCI EAFE Index
Defined benefit pension plan disclosure
Performance benchmark (as a percent)	25.00%
Barclays Capital Aggregate Bond Index
Defined benefit pension plan disclosure
Performance benchmark (as a percent)	40.00%
Equity Securities
Defined benefit pension plan disclosure
Target plan asset allocations	60.00%
Equity Securities, Domestic | Maximum
Defined benefit pension plan disclosure
Target plan asset allocations	100.00%
Equity Securities, Domestic | Minimum
Defined benefit pension plan disclosure
Target plan asset allocations	50.00%
Equity Securities, International | Maximum
Defined benefit pension plan disclosure
Target plan asset allocations	50.00%
Equity Securities, International | Minimum
Defined benefit pension plan disclosure
Target plan asset allocations	0.00%
Fixed Income Securities
Defined benefit pension plan disclosure
Target plan asset allocations	40.00%
Cash | Maximum
Defined benefit pension plan disclosure
Target plan asset allocations	20.00%
Cash | Minimum
Defined benefit pension plan disclosure
Target plan asset allocations	0.00%

Employee Benefits (Fair values

Employee Benefits (Fair values of retirement plan assets) (Details 5) - Pension Benefits - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Defined benefit pension plan disclosure
Fair value of plan assets	$ 83,858	$ 90,154	$ 90,535
Quoted Prices in Active Markets for Identical Assets (Level 1)
Defined benefit pension plan disclosure
Fair value of plan assets	83,858
Cash
Defined benefit pension plan disclosure
Fair value of plan assets	1,313	1,385
Cash | Quoted Prices in Active Markets for Identical Assets (Level 1)
Defined benefit pension plan disclosure
Fair value of plan assets	1,313
Equity Security - Mutual Funds: Mixed-Cap
Defined benefit pension plan disclosure
Fair value of plan assets	30,949	33,648
Equity Security - Mutual Funds: Mixed-Cap | Quoted Prices in Active Markets for Identical Assets (Level 1)
Defined benefit pension plan disclosure
Fair value of plan assets	30,949
Equity Security - Mutual Funds: International
Defined benefit pension plan disclosure
Fair value of plan assets	17,917	18,882
Equity Security - Mutual Funds: International | Quoted Prices in Active Markets for Identical Assets (Level 1)
Defined benefit pension plan disclosure
Fair value of plan assets	17,917
Equity Security - Mutual Funds: Emerging Market
Defined benefit pension plan disclosure
Fair value of plan assets	1,982	2,053
Equity Security - Mutual Funds: Emerging Market | Quoted Prices in Active Markets for Identical Assets (Level 1)
Defined benefit pension plan disclosure
Fair value of plan assets	1,982
Fixed Income - Mutual Funds
Defined benefit pension plan disclosure
Fair value of plan assets	31,697	$ 34,186
Fixed Income - Mutual Funds | Quoted Prices in Active Markets for Identical Assets (Level 1)
Defined benefit pension plan disclosure
Fair value of plan assets	$ 31,697

Share-Based Compensation (Detai

Share-Based Compensation (Details 1) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Share-based Compensation [Line Items]
Total shares authorized	1,300,000
Shares available for future grants of stock options or restricted stock	1,100,000
Compensation Expense	$ 7,689	$ 7,870	$ 5,546
Income Tax Benefit	$ 3,036	$ 3,104	2,188
Stock Options [Roll Forward]
Outstanding at the beginning of the period (in shares)	755,343
Exercised (in shares)	(197,927)
Forfeited (in shares)	(2,057)
Outstanding at the end of the period (in shares)	555,359	755,343
Vested and Exercisable at the end of the period (in shares)	555,359
Weighted Average Exercise Price
Outstanding at the beginning of the period (in dollars per share)	$ 46.29
Exercised (in dollars per share)	49.03
Forfeited (in dollars per share)	47.35
Outstanding at the end of the period (in dollars per share)	45.31	$ 46.29
Vested and Exercisable at the end of period (in dollars per share)	$ 45.31
Weighted Average Remaining Contractual Term
Outstanding at the end of the period (in years)	5 years 9 months
Vested and Exercisable at the end of period (in years)	5 years 9 months
Aggregate Intrinsic Value
Outstanding at the end of the period	$ 9,770
Vested and Exercisable at the end of the period	9,770
Stock options activity
Intrinsic Value of Stock Options Exercised	2,754	$ 1,209	3,262
Cash Received from Stock Options Exercised	9,704	4,083	8,369
Tax Benefits Realized from Stock Options Exercised	330	34	690
Total Fair Value of Stock Options that Vested	$ 0	$ 0	$ 3,731
Stock Options
Share-based Compensation [Line Items]
Expiration period	10 years
Restricted Stock
Restricted Stock
Unrecognized compensation cost related to unvested restricted stock	$ 8,300
Weighted average period during which unrecognized compensation cost is expected to be recognized (in years)	1 year 10 months
Number of Shares
Unvested at the beginning of the period (in shares)	263,446	239,775	211,526
Granted (in shares)	116,331	155,447	170,991
Vested (in shares)	(108,949)	(130,238)	(133,245)
Forfeited (in shares)	(2,015)	(1,538)	(9,497)
Unvested at the end of the period (in shares)	268,813	263,446	239,775
Weighted Average Grant Date Fair Value
Unvested at the beginning of the period (in dollars per share)	$ 53.04	$ 47.50	$ 47.91
Granted (in dollars per share)	57.31	58.45	47.69
Vested (in dollars per share)	52.47	47.32	48.39
Forfeited (in dollars per share)	54.17	51.19	47.54
Unvested at the end of the period (in dollars per share)	$ 55.92	$ 53.04	$ 47.50
Grant Date Fair Value of Restricted Stock that Vested During the Year
Vested (in dollars)	$ 5,759	$ 6,163	$ 6,448
Service-Based Restricted Stock
Number of Shares
Unvested at the end of the period (in shares)	26,281
Restricted Stock Units (RSUs)
Share-based Compensation [Line Items]
Compensation Expense	$ 3,300	$ 1,600
Number of Shares
Unvested at the beginning of the period (in shares)	105,405	0
Granted (in shares)	61,751	105,405
Vested (in shares)	(31,651)
Unvested at the end of the period (in shares)	135,505	105,405	0
Weighted Average Grant Date Fair Value
Unvested at the beginning of the period (in dollars per share)	$ 55.17	$ 0
Granted (in dollars per share)	56.68	55.17
Vested (in dollars per share)	55.17
Unvested at the end of the period (in dollars per share)	$ 55.86	$ 55.17	$ 0
Grant Date Fair Value of Restricted Stock that Vested During the Year
Vested (in dollars)	$ 1,940
Minimum | Restricted Stock
Share-based Compensation [Line Items]
Vesting period (in years)	1 year
Minimum | Restricted Stock Units (RSUs)
Share-based Compensation [Line Items]
Vesting period (in years)	3 years
Maximum | Restricted Stock
Share-based Compensation [Line Items]
Vesting period (in years)	5 years
Maximum | Restricted Stock Units (RSUs)
Share-based Compensation [Line Items]
Vesting period (in years)	4 years

Income Taxes (Deferred tax liab

Income Taxes (Deferred tax liabilities & assets and reconciliation of statutory federal income taxes to the company's effective tax rate) (Details 1) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Current:
Federal	$ 73,278	$ 76,789	$ 63,731
State	3,737	3,018	(575)
Total Current	77,015	79,807	63,156
Deferred:
Federal	(6,801)	(5,603)	(231)
State	284	392	734
Total Deferred	(6,517)	(5,211)	503
Provision for Income Taxes	70,498	74,596	63,659
Net tax charge/(benefit) recorded directly to consolidated shareholders' equity	1,000	2,700	$ (40,600)
Deferred Tax Liabilities:
Accrued Pension Cost	(13,707)	(14,014)
Federal Home Loan Bank Stock	(5,088)	(6,658)
Lease Transactions	(85,874)	(97,864)
Energy Tax Credits	(8,054)	(5,716)
Net Unrealized Gains on Investments Securities	(3,453)	(4,830)
Deferred Loan Fees	(7,744)	(5,982)
Originated Mortgage Servicing Rights	(9,104)	(9,777)
Other	(657)	(599)
Gross Deferred Tax Liabilities	(133,681)	(145,440)
Deferred Tax Assets:
Accelerated Depreciation	7,775	9,419
Allowance for Loan Losses	42,890	44,877
Minimum Pension Liability	18,831	22,214
Accrued Expenses	16,738	15,622
Postretirement Benefit Obligations	12,849	12,884
Capital Lease Expenses	3,231	3,222
Restricted Stock	6,262	5,288
Investment in Unincorporated Entities	1,951	3,084
Deductible State and Local Taxes	4,166	5,598
Other	7,225	6,898
Gross Deferred Tax Assets Before Valuation Allowance	121,918	129,106
Valuation Allowance	(3,932)	(4,656)
Gross Deferred Tax Assets After Valuation Allowance	117,986	124,450
Net Deferred Tax Liabilities	(15,695)	$ (20,990)
Base year reserves included in retained earnings	18,200
Unrecognized deferred federal income tax liability	$ 7,200
Reconciliation of the Statutory Federal Income Tax Rate to the Company's Effective Tax Rate
Statutory Federal Income Tax Rate (as a percent)	35.00%	35.00%	35.00%
Increase (Decrease) in Income Tax Rate Resulting From:
State Taxes, Net of Federal Income Tax (as a percent)	1.23%	0.59%	0.11%
Tax Reserve Adjustments (as a percent)	0.38%	0.88%	(0.44%)
Leveraged Leases (as a percent)	0.06%	0.01%	0.02%
Low-Income Housing Investments (as a percent)	(0.78%)	(0.10%)	(0.51%)
Investment Tax Credits (as a percent)	(0.89%)	(0.68%)	(0.80%)
Bank-Owned Life Insurance (as a percent)	(1.06%)	(0.97%)	(0.96%)
Tax-Exempt Income (as a percent)	(3.03%)	(2.83%)	(2.78%)
Other (as a percent)	(0.42%)	(0.51%)	0.09%
Effective Tax Rate (as a percent)	30.49%	31.39%	29.73%

Income Taxes (Unrecognized tax

Income Taxes (Unrecognized tax benefits) (Details 2) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Reconciliation of liability for Unrecognized Tax Benefits
Unrecognized Tax Benefits at the Beginning of Year	$ 12,229	$ 11,846	$ 15,433
Gross Increases, Related to Tax Positions Taken in a Prior Period	398	1,074	1,587
Gross Decreases, Related to Tax Positions Taken in a Prior Period	(98)	(314)	(194)
Gross Increases, Related to Current Period Tax Positions	573	498	1,557
Lapse of Statute of Limitations	(1,500)	(875)	(6,537)
Unrecognized Tax Benefits at the End of Year	11,602	12,229	11,846
Amount related to unrecognized tax benefits that if reversed would impact effective tax rate	10,800	11,300
Interest and penalties expense/(benefit) related to the liability for unrecognized tax benefits	100	200	$ (1,200)
Accrued interest and penalties related to the liability for unrecognized tax benefits	$ 2,200	$ 2,200

Derivative Financial Instrume98

Derivative Financial Instruments (Notional and fair value amounts) (Details 1) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Interest Rate Lock Commitments
Derivative Financial Instruments Not Designated as Hedging Instruments
Notional Amount	$ 4,375	$ 2,354
Fair Value	270	152
Forward Commitments
Derivative Financial Instruments Not Designated as Hedging Instruments
Notional Amount	5,862	5,404
Fair Value	4	(13)
Interest Rate Swap Agreements Receive Fixed/Pay Variable Swaps
Derivative Financial Instruments Not Designated as Hedging Instruments
Notional Amount	203,667	183,283
Fair Value	13,021	16,206
Interest Rate Swap Agreements Pay Fixed/Receive Variable Swaps
Derivative Financial Instruments Not Designated as Hedging Instruments
Notional Amount	203,667	183,283
Fair Value	(13,051)	(16,240)
Foreign Exchange Contracts
Derivative Financial Instruments Not Designated as Hedging Instruments
Notional Amount	42,777	44,240
Fair Value	$ 104	$ (345)

Derivative Financial Instrume99

Derivative Financial Instruments (Assets and liabilities) (Details 2) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Derivative Financial Instruments Not Designated as Hedging Instruments
Asset Derivatives	$ 13,967	$ 16,515
Liability Derivatives	13,619	16,755
Interest Rate Lock Commitments
Derivative Financial Instruments Not Designated as Hedging Instruments
Asset Derivatives	270	152
Liability Derivatives	0	0
Forward Commitments
Derivative Financial Instruments Not Designated as Hedging Instruments
Asset Derivatives	5	0
Liability Derivatives	1	13
Interest Rate Swap Agreements
Derivative Financial Instruments Not Designated as Hedging Instruments
Asset Derivatives	13,543	16,262
Liability Derivatives	13,573	16,296
Foreign Exchange Contracts
Derivative Financial Instruments Not Designated as Hedging Instruments
Asset Derivatives	149	101
Liability Derivatives	$ 45	$ 446

Derivative Financial Instrum100

Derivative Financial Instruments (Net gains or losses) (Details 3) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Derivative Instruments, Gain (Loss) [Line Items]
Net Gains (Losses) Recognized in the Statements of Income	$ 6,674	$ 5,782	$ 17,651
Interest Rate Lock Commitments | Mortgage Banking Income
Derivative Instruments, Gain (Loss) [Line Items]
Net Gains (Losses) Recognized in the Statements of Income	2,779	3,072	6,092
Forward Commitments | Mortgage Banking Income
Derivative Instruments, Gain (Loss) [Line Items]
Net Gains (Losses) Recognized in the Statements of Income	27	(527)	8,085
Interest Rate Swap Agreements | Other Noninterest Income
Derivative Instruments, Gain (Loss) [Line Items]
Net Gains (Losses) Recognized in the Statements of Income	1,085	130	292
Foreign Exchange Contracts | Other Noninterest Income
Derivative Instruments, Gain (Loss) [Line Items]
Net Gains (Losses) Recognized in the Statements of Income	$ 2,783	$ 3,107	$ 3,182

Derivative Financial Instrum101

Derivative Financial Instruments (Conversion rate swap agreement narrative) (Details 4) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014	Sep. 30, 2014
Derivative [Line Items]
Liability Derivatives	$ 13,619	$ 16,755
Visa Conversion Rate Swap Agreement
Derivative [Line Items]
Liability Derivatives			$ 100

Affordable Housing Projects 102

Affordable Housing Projects Tax Credit Partnerships (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Equity Method Investments and Joint Ventures [Abstract]
Net affordable housing tax credit investments and related unfunded commitments	$ 68,800	$ 68,500
Affordable Housing Tax Credit Investments, Unfunded Commitments [Abstract]
2,016	16,305
2,017	8,778
2,018	28
2,019	75
2,020	3
Thereafter	65
Total Unfunded Commitments	25,254
Investments in Affordable Housing Projects [Abstract]
Tax Credits and Other Tax Benefits recognized	13,448	10,946	$ 9,416
Amortization expense in provision for income taxes	$ 7,735	$ 5,881	$ 4,673

Balance Sheet Offsetting (Repos

Balance Sheet Offsetting (Repos - by maturity date and collateral type) (Details 1) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Securities sold under repurchase agreements
Securities Sold under Agreements to Repurchase	$ 628,857	$ 688,601
Debt Securities Issued by the U.S. Treasury and Government Agencies
Securities sold under repurchase agreements
Securities Sold under Agreements to Repurchase	310,313
Debt Securities Issued by States and Political Subdivisions
Securities sold under repurchase agreements
Securities Sold under Agreements to Repurchase	52,707
Residential - Government Agencies
Securities sold under repurchase agreements
Securities Sold under Agreements to Repurchase	155,238
Residential - U.S. Government Sponsored Enterprises
Securities sold under repurchase agreements
Securities Sold under Agreements to Repurchase	110,599
Maturity Up To 90 Days [Member]
Securities sold under repurchase agreements
Securities Sold under Agreements to Repurchase	49,065
Maturity Up To 90 Days [Member] | Debt Securities Issued by the U.S. Treasury and Government Agencies
Securities sold under repurchase agreements
Securities Sold under Agreements to Repurchase	0
Maturity Up To 90 Days [Member] | Debt Securities Issued by States and Political Subdivisions
Securities sold under repurchase agreements
Securities Sold under Agreements to Repurchase	47,915
Maturity Up To 90 Days [Member] | Residential - Government Agencies
Securities sold under repurchase agreements
Securities Sold under Agreements to Repurchase	1,150
Maturity Up To 90 Days [Member] | Residential - U.S. Government Sponsored Enterprises
Securities sold under repurchase agreements
Securities Sold under Agreements to Repurchase	0
Maturity 91 To 365 Days [Member]
Securities sold under repurchase agreements
Securities Sold under Agreements to Repurchase	79,692
Maturity 91 To 365 Days [Member] | Debt Securities Issued by the U.S. Treasury and Government Agencies
Securities sold under repurchase agreements
Securities Sold under Agreements to Repurchase	0
Maturity 91 To 365 Days [Member] | Debt Securities Issued by States and Political Subdivisions
Securities sold under repurchase agreements
Securities Sold under Agreements to Repurchase	4,692
Maturity 91 To 365 Days [Member] | Residential - Government Agencies
Securities sold under repurchase agreements
Securities Sold under Agreements to Repurchase	51,169
Maturity 91 To 365 Days [Member] | Residential - U.S. Government Sponsored Enterprises
Securities sold under repurchase agreements
Securities Sold under Agreements to Repurchase	23,831
Maturity 1 To 3 Years [Member]
Securities sold under repurchase agreements
Securities Sold under Agreements to Repurchase	200,100
Maturity 1 To 3 Years [Member] | Debt Securities Issued by the U.S. Treasury and Government Agencies
Securities sold under repurchase agreements
Securities Sold under Agreements to Repurchase	200,000
Maturity 1 To 3 Years [Member] | Debt Securities Issued by States and Political Subdivisions
Securities sold under repurchase agreements
Securities Sold under Agreements to Repurchase	100
Maturity 1 To 3 Years [Member] | Residential - Government Agencies
Securities sold under repurchase agreements
Securities Sold under Agreements to Repurchase	0
Maturity 1 To 3 Years [Member] | Residential - U.S. Government Sponsored Enterprises
Securities sold under repurchase agreements
Securities Sold under Agreements to Repurchase	0
Maturity After 3 Years [Member]
Securities sold under repurchase agreements
Securities Sold under Agreements to Repurchase	300,000
Maturity After 3 Years [Member] | Debt Securities Issued by the U.S. Treasury and Government Agencies
Securities sold under repurchase agreements
Securities Sold under Agreements to Repurchase	110,313
Maturity After 3 Years [Member] | Debt Securities Issued by States and Political Subdivisions
Securities sold under repurchase agreements
Securities Sold under Agreements to Repurchase	0
Maturity After 3 Years [Member] | Residential - Government Agencies
Securities sold under repurchase agreements
Securities Sold under Agreements to Repurchase	102,919
Maturity After 3 Years [Member] | Residential - U.S. Government Sponsored Enterprises
Securities sold under repurchase agreements
Securities Sold under Agreements to Repurchase	$ 86,768

Balance Sheet Offsetting (Asset

Balance Sheet Offsetting (Assets and liabilities subject to MNA, or repurchase agreements) (Details 2) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Liabilities:
Repurchase Agreements, Gross Amounts of Recognized Liabilities	$ 628,857	$ 688,601
Repurchase Agreements, Gross Amounts Offset in the Statements of Condition	0	0
Repurchase Agreements, Net Amounts of Liabilities Presented in the Statements of Condition	628,857	688,601
Repurchase Agreements, Fair Value of Collateral Pledged	628,857	688,601
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	13,100	16,200
Institutional Counterparties | Interest Rate Swap Agreements
Assets:
Gross Amounts of Recognized Assets	261	28
Gross Amounts Offset in the Statements of Condition	0	0
Derivative Asset, Fair Value, Amount Not Offset Against Collateral	261	28
Derivative Asset, Not Offset, Policy Election Deduction	261	28
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	13,312	16,268
Gross Amounts Offset in the Statements of Condition	0	0
Derivative Liability, Fair Value, Amount Not Offset Against Collateral	13,312	16,268
Derivative Liability, Not Offset, Policy Election Deduction	261	28
Derivative, Collateral, Right to Reclaim Securities	0	0
Derivative Liabilities, Net Amount	13,051	16,240
Private Institutions
Offsetting Assets and Liabilities [Line items]
Securities Sold under Agreements to Repurchase, Fair Value of Collateral	663,200	694,700
Liabilities:
Repurchase Agreements, Gross Amounts of Recognized Liabilities	575,000	600,000
Repurchase Agreements, Gross Amounts Offset in the Statements of Condition	0	0
Repurchase Agreements, Net Amounts of Liabilities Presented in the Statements of Condition	575,000	600,000
Repurchase Agreements, Fair Value of Collateral Pledged	575,000	600,000
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	66,900
Liabilities:
Repurchase Agreements, Gross Amounts of Recognized Liabilities	53,857	88,601
Repurchase Agreements, Gross Amounts Offset in the Statements of Condition	0	0
Repurchase Agreements, Net Amounts of Liabilities Presented in the Statements of Condition	53,857	88,601
Repurchase Agreements, Fair Value of Collateral Pledged	53,857	88,601
Securities Sold under Agreements to Repurchase, Net Amount Offset Against Collateral	$ 0	$ 0

Commitments, Contingencies, 105

Commitments, Contingencies, and Guarantees (Credit commitments) (Details 1) $ in Thousands	12 Months Ended
	Dec. 31, 2015USD ($)
Credit Commitments
Credit Commitments	$ 2,668,449
Unfunded Commitments to Extend Credit
Credit Commitments
Credit Commitments	2,604,429
Standby Letters of Credit
Credit Commitments
Credit Commitments	48,153
Assets secured for standby letters of credit	33,500
Commercial Letters of Credit
Credit Commitments
Credit Commitments	$ 15,867
Standby and Commercial Letters of Credit | Minimum
Credit Commitments
Standby and commercial letters of credit, remaining term (in months)	1 month
Standby and Commercial Letters of Credit | Maximum
Credit Commitments
Standby and commercial letters of credit, remaining term (in months)	27 months

Commitments, Contingencies, 106

Commitments, Contingencies, and Guarantees (Rental expense and future minimum payments) (Details 2) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Rental expense
Minimum Rentals	$ 18,826	$ 18,411	$ 19,258
Sublease Rental Income	(6,212)	(6,647)	(6,806)
Total	12,614	$ 11,764	$ 12,452
Future minimum payments for capital leases
2,016	825
2,017	825
2,018	825
2,019	825
2,020	825
Thereafter	26,405
Total Future Minimum Lease Payments	30,530
Amounts Representing Interest	(19,682)
Present Value of Net Future Minimum Lease Payments	10,848
Future minimum payments for operating leases
2,016	13,752
2,017	11,289
2,018	9,974
2,019	8,253
2,020	7,993
Thereafter	99,276
Total Future Minimum Lease Payments	150,537
Minimum future rental income receivable under subleases from non-cancelable operating leases	$ 13,500

Commitments, Contingencies, 107

Commitments, Contingencies, and Guarantees (Representations and warranties) (Details 3) - Residential Mortgage $ in Millions	12 Months Ended
	Dec. 31, 2015USD ($)Loan
Representations and Warranties
Unpaid principal balance of mortgage loans sold | $	$ 2,500
Number of mortgage loans repurchased	4
Unpaid principal balance of repurchased mortgage loan | $	$ 1.2
Number of mortgage loans repurchased, delinquent	3
Number of Mortgage Loans Repurchased, Pending	0
Number of Mortgage Loans Repurchased due to Loan Servicing Activities, Pending	0
Current residential mortgage loans serviced for investors as percentage of total	99.00%

Fair Value of Assets and Lia108

Fair Value of Assets and Liabilities (Fair value on recurring basis) (Details 1) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Assets:
Available-for-Sale: Fair Value	$ 2,256,818	$ 2,289,190	$ 2,243,697
Loans Held for Sale	4,808	5,136
Derivative Assets	13,967	16,515
Fair Value, Measurements, Recurring [Member]
Assets:
Available-for-Sale: Fair Value	2,256,818	2,289,190
Loans Held for Sale	4,808	5,136
Mortgage Servicing Rights	1,970	2,604
Other Assets	20,262	18,794
Derivative Assets	13,967	16,515
Total Assets Measured at Fair Value on a Recurring Basis	2,297,825	2,332,239
Liabilities:
Derivative Liabilities	13,619	16,755
Total Liabilities Measured at Fair Value on a Recurring Basis	13,619	16,755
Fair Value, Measurements, Recurring [Member] | Debt Securities Issued by the U.S. Treasury and Government Agencies
Assets:
Available-for-Sale: Fair Value	358,894	331,258
Fair Value, Measurements, Recurring [Member] | Debt Securities Issued by States and Political Subdivisions
Assets:
Available-for-Sale: Fair Value	731,918	743,970
Fair Value, Measurements, Recurring [Member] | Debt Securities Issued by Corporations
Assets:
Available-for-Sale: Fair Value	308,870	294,833
Fair Value, Measurements, Recurring [Member] | Mortgage-Backed Securities
Assets:
Available-for-Sale: Fair Value	857,136	919,129
Fair Value, Measurements, Recurring [Member] | Residential - Government Agencies
Assets:
Available-for-Sale: Fair Value	316,245	462,436
Fair Value, Measurements, Recurring [Member] | Residential - U.S. Government Sponsored Enterprises
Assets:
Available-for-Sale: Fair Value	441,864	278,461
Fair Value, Measurements, Recurring [Member] | Commercial - Government Agencies
Assets:
Available-for-Sale: Fair Value	99,027	178,232
Fair Value, Measurements, Recurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1)
Assets:
Available-for-Sale: Fair Value	545	61,271
Loans Held for Sale	0	0
Mortgage Servicing Rights	0	0
Other Assets	20,262	18,794
Derivative Assets	0	0
Total Assets Measured at Fair Value on a Recurring Basis	20,807	80,065
Liabilities:
Derivative Liabilities	0	0
Total Liabilities Measured at Fair Value on a Recurring Basis	0	0
Fair Value, Measurements, Recurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) | Debt Securities Issued by the U.S. Treasury and Government Agencies
Assets:
Available-for-Sale: Fair Value	545	61,271
Fair Value, Measurements, Recurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) | Debt Securities Issued by States and Political Subdivisions
Assets:
Available-for-Sale: Fair Value	0	0
Fair Value, Measurements, Recurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) | Debt Securities Issued by Corporations
Assets:
Available-for-Sale: Fair Value	0	0
Fair Value, Measurements, Recurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) | Mortgage-Backed Securities
Assets:
Available-for-Sale: Fair Value	0	0
Fair Value, Measurements, Recurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) | Residential - Government Agencies
Assets:
Available-for-Sale: Fair Value	0	0
Fair Value, Measurements, Recurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) | Residential - U.S. Government Sponsored Enterprises
Assets:
Available-for-Sale: Fair Value	0	0
Fair Value, Measurements, Recurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) | Commercial - Government Agencies
Assets:
Available-for-Sale: Fair Value	0	0
Fair Value, Measurements, Recurring [Member] | Significant Other Observable Inputs (Level 2)
Assets:
Available-for-Sale: Fair Value	2,256,273	2,227,919
Loans Held for Sale	4,808	5,136
Mortgage Servicing Rights	0	0
Other Assets	0	0
Derivative Assets	154	101
Total Assets Measured at Fair Value on a Recurring Basis	2,261,235	2,233,156
Liabilities:
Derivative Liabilities	46	459
Total Liabilities Measured at Fair Value on a Recurring Basis	46	459
Fair Value, Measurements, Recurring [Member] | Significant Other Observable Inputs (Level 2) | Debt Securities Issued by the U.S. Treasury and Government Agencies
Assets:
Available-for-Sale: Fair Value	358,349	269,987
Fair Value, Measurements, Recurring [Member] | Significant Other Observable Inputs (Level 2) | Debt Securities Issued by States and Political Subdivisions
Assets:
Available-for-Sale: Fair Value	731,918	743,970
Fair Value, Measurements, Recurring [Member] | Significant Other Observable Inputs (Level 2) | Debt Securities Issued by Corporations
Assets:
Available-for-Sale: Fair Value	308,870	294,833
Fair Value, Measurements, Recurring [Member] | Significant Other Observable Inputs (Level 2) | Mortgage-Backed Securities
Assets:
Available-for-Sale: Fair Value	857,136	919,129
Fair Value, Measurements, Recurring [Member] | Significant Other Observable Inputs (Level 2) | Residential - Government Agencies
Assets:
Available-for-Sale: Fair Value	316,245	462,436
Fair Value, Measurements, Recurring [Member] | Significant Other Observable Inputs (Level 2) | Residential - U.S. Government Sponsored Enterprises
Assets:
Available-for-Sale: Fair Value	441,864	278,461
Fair Value, Measurements, Recurring [Member] | Significant Other Observable Inputs (Level 2) | Commercial - Government Agencies
Assets:
Available-for-Sale: Fair Value	99,027	178,232
Fair Value, Measurements, Recurring [Member] | Significant Other Unobservable Inputs (Level 3)
Assets:
Available-for-Sale: Fair Value	0	0
Loans Held for Sale	0	0
Mortgage Servicing Rights	1,970	2,604
Other Assets	0	0
Derivative Assets	13,813	16,414
Total Assets Measured at Fair Value on a Recurring Basis	15,783	19,018
Liabilities:
Derivative Liabilities	13,573	16,296
Total Liabilities Measured at Fair Value on a Recurring Basis	13,573	16,296
Fair Value, Measurements, Recurring [Member] | 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 [Member] | 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 [Member] | Significant Other Unobservable Inputs (Level 3) | Debt Securities Issued by Corporations
Assets:
Available-for-Sale: Fair Value	0	0
Fair Value, Measurements, Recurring [Member] | Significant Other Unobservable Inputs (Level 3) | Mortgage-Backed Securities
Assets:
Available-for-Sale: Fair Value	0	0
Fair Value, Measurements, Recurring [Member] | Significant Other Unobservable Inputs (Level 3) | Residential - Government Agencies
Assets:
Available-for-Sale: Fair Value	0	0
Fair Value, Measurements, Recurring [Member] | Significant Other Unobservable Inputs (Level 3) | Residential - U.S. Government Sponsored Enterprises
Assets:
Available-for-Sale: Fair Value	0	0
Fair Value, Measurements, Recurring [Member] | Significant Other Unobservable Inputs (Level 3) | Commercial - Government Agencies
Assets:
Available-for-Sale: Fair Value	$ 0	$ 0

Fair Value of Assets and Lia109

Fair Value of Assets and Liabilities (FV on recurring basis-Level 3 rollforward) (Details 2) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Fair Value, Mortgage Servicing Rights Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Fair Value, Mortgage Servicing Rights, Beginning Balance	$ 2,604	$ 3,826
Fair Value, Mortgage Servicing Rights, Realized and Unrealized Net Gains (Losses) Included in Net Income	(634)	(1,222)
Fair Value, Mortgage Servicing Rights, Ending Balance	1,970	2,604
Fair Value, Mortgage Service Rights, Total Unrealized Net Gains (Losses) Included in Net Income Related to Assets Still Held	(251)	(868)
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Fair Value, Net Derivative Assets and Liabilities, Beginning Balance	118	379
Fair Value, Net Derivative Assets and Liabilities, Realized and Unrealized Net Gains (Losses) Included in Net Income	2,783	3,195
Fair Value, Net Derivative Assets and Liabilities, Transfers to Loans Held for Sale	(2,661)	(3,456)
Fair Value, Net Derivative Assets and Liabilities, Ending Balance	240	118
Fair Value, Net Derivative Assets and Liabilities,Total Unrealized Net Gains (Losses) Included in Net Income Related to Assets Still Held	$ 240	$ 118

Fair Value of Assets and Lia110

Fair Value of Assets and Liabilities (FV on recurring or nonrecurring basis-level 3 inputs) (Details 3) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
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)	94.70%	93.85%
Interest Rate Derivative Instruments Not Designated as Hedging Instruments at Fair Value, Net	$ 270	$ 152
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)	0.22%	0.21%
Interest Rate Derivative Instruments Not Designated as Hedging Instruments at Fair Value, Net	$ (30)	$ (34)
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)	9.10%	11.62%
Weighted Average Discount Rate (as a percent)	9.38%	10.61%
Mortgage Servicing Rights, at Fair Value	$ 26,774	$ 25,441

Fair Value of Assets and Lia111

Fair Value of Assets and Liabilities (FV on nonrecurring basis) (Details 4) $ in Thousands	12 Months Ended
	Dec. 31, 2015USD ($)aircraft	Dec. 31, 2014USD ($)property
Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis
Mortgage Servicing Rights accounted for under the amortization method, valuation allowance	$ 21	$ 57
Foreclosed Real Estate	824	2,311
Foreclosed Real Estate, Valuation Allowance	0	$ 89
Other Assets, Equipment Held for Sale, Valuation Allowance	$ 9,453
Number of Impaired Foreclosed Real Estate | property		1
Number of Impaired Aircraft | aircraft	6
Other Asset Impairment Charges	$ 9,500
Fair Value, Measurements, Nonrecurring [Member] | Significant Other Unobservable Inputs (Level 3)
Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis
Mortgage Servicing Rights accounted for under the amortization method	21,032	$ 22,091
Foreclosed Real Estate	824	$ 2,311
Other Assets, Equipment Held for Sale	$ 4,657

Fair Value of Assets and Lia112

Fair Value of Assets and Liabilities (FV option) (Details 5) - Residential Mortgage Loans Held For Sale - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Fair Value Option
Aggregate Fair Value	$ 4,808	$ 5,136
Aggregate Unpaid Principal	4,575	4,740
Aggregate Fair Value less Aggregate Unpaid Principal	$ 233	$ 396

Fair Value of Assets and Lia113

Fair Value of Assets and Liabilities (Financial instruments not recorded at FV on recurring basis) (Details 6) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Financial Instruments - Assets
Held-to-Maturity, Fair Value	$ 4,006,412	$ 4,504,495	$ 4,697,587
Carrying Amount
Financial Instruments - Assets
Held-to-Maturity, Fair Value	3,982,736	4,466,679
Loans	7,538,454	6,542,719
Financial Instruments - Liabilities
Time Deposits	1,177,651	1,434,001
Securities Sold Under Agreements to Repurchase	628,857	688,601
Long-Term Debt	234,938	163,005
Fair value
Financial Instruments - Assets
Held-to-Maturity, Fair Value	4,006,412	4,504,495
Loans	7,967,385	7,048,757
Financial Instruments - Liabilities
Time Deposits	1,178,837	1,437,064
Securities Sold Under Agreements to Repurchase	686,853	758,781
Long-Term Debt	235,668	163,911
Fair value | Quoted Prices in Active Markets for Identical Assets (Level 1)
Financial Instruments - Assets
Held-to-Maturity, Fair Value	489,967	499,616
Loans	0	0
Financial Instruments - Liabilities
Time Deposits	0	0
Securities Sold Under Agreements to Repurchase	0	0
Long-Term Debt	0	0
Fair value | Significant Other Observable Inputs (Level 2)
Financial Instruments - Assets
Held-to-Maturity, Fair Value	3,516,445	4,004,879
Loans	0	0
Financial Instruments - Liabilities
Time Deposits	1,178,837	1,437,064
Securities Sold Under Agreements to Repurchase	686,853	758,781
Long-Term Debt	235,668	163,911
Fair value | Significant Other Unobservable Inputs (Level 3)
Financial Instruments - Assets
Held-to-Maturity, Fair Value	0	0
Loans	7,967,385	7,048,757
Financial Instruments - Liabilities
Time Deposits	0	0
Securities Sold Under Agreements to Repurchase	0	0
Long-Term Debt	$ 0	$ 0

Bank of Hawaii Corporation F114

Bank of Hawaii Corporation Financial Statements (Condensed Statements of Comprehensive Income) (Details 1) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income
Investment Securities Gains (Losses), Net	$ 10,160	$ 8,063	$ 0
Noninterest Expense
Total Noninterest Expense	348,104	326,899	330,969
Income Before Income Tax Benefit and Equity in Undistributed Income of Subsidiaries	231,202	237,638	214,161
Income Tax Benefit (Expense)	(70,498)	(74,596)	(63,659)
Comprehensive Income	163,833	168,179	89,471
Parent
Income
Dividends and Interest from Bank of Hawaii	115,000	136,000	133,000
Investment Securities Gains (Losses), Net	9,870	7,810	0
Other Income	973	690	727
Total Income	125,843	144,500	133,727
Noninterest Expense
Intercompany Salaries and Services	651	839	852
Other Expenses	2,325	2,067	2,942
Total Noninterest Expense	2,976	2,906	3,794
Income Before Income Tax Benefit and Equity in Undistributed Income of Subsidiaries	122,867	141,594	129,933
Income Tax Benefit (Expense)	(1,670)	225	2,211
Equity in Undistributed Income of Subsidiaries	39,507	21,223	18,358
Net Income	160,704	163,042	150,502
Comprehensive Income	$ 163,833	$ 168,179	$ 89,471

Bank of Hawaii Corporation F115

Bank of Hawaii Corporation Financial Statements (Condensed Statements of Condition) (Details 2) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Assets
Investment Securities Held-to-Maturity	$ 3,982,736	$ 4,466,679	$ 4,744,519
Goodwill	31,517	31,517
Other Assets	199,392	225,888
Total Assets	15,455,016	14,787,208	14,084,280
Liabilities
Other Liabilities	135,534	139,659
Total Liabilities	14,338,756	13,732,122
Shareholders' Equity	1,116,260	1,055,086	$ 1,011,976	$ 1,021,665
Total Liabilities and Shareholders' Equity	15,455,016	14,787,208
Parent
Assets
Cash with Bank of Hawaii	63,755	68,563
Investment Securities Held-to-Maturity	4,960	4,947
Goodwill	14,129	14,129
Income Taxes Receivable and Deferred Tax Assets	2,445	2,868
Other Assets	7,842	7,825
Equity in Net Assets of Subsidiaries	1,036,977	976,354
Total Assets	1,130,108	1,074,686
Liabilities
Income Taxes Payable	5,072	6,269
Other Liabilities	8,776	13,331
Total Liabilities	13,848	19,600
Shareholders' Equity	1,116,260	1,055,086
Total Liabilities and Shareholders' Equity	$ 1,130,108	$ 1,074,686

Bank of Hawaii Corporation F116

Bank of Hawaii Corporation Financial Statements (Condensed Statements of Cash Flows) (Details 3) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Adjustments to Reconcile Net Income to Net Cash Provided by Operating Activities:
Share-Based Compensation	$ 7,689	$ 7,870	$ 5,546
Net Losses (Gains) on Investment Securities	(10,160)	(8,063)	0
Net Change in Other Assets and Other Liabilities	13,331	(2,915)	9,162
Net Cash Provided by Operating Activities	234,012	209,480	241,963
Investing Activities
Proceeds from Sales of Investment Securities	67,985	16,574	0
Purchase of Investment Securities Held-to-Maturity Securities	(518,664)	(525,070)	(1,661,874)
Net Cash Provided by (Used in) Investing Activities	(531,103)	(640,071)	(471,294)
Financing Activities
Proceeds from Issuance of Common Stock	15,364	9,995	14,495
Repurchase of Common Stock	(52,981)	(64,046)	(39,655)
Cash Dividends Paid	(78,367)	(79,660)	(80,534)
Net Cash Provided by (Used in) Financing Activities	517,236	502,421	340,216
Cash and Cash Equivalents at Beginning of Period	535,576	463,746	352,861
Cash and Cash Equivalents at End of Period	755,721	535,576	463,746
Parent
Operating Activities
Net Income	160,704	163,042	150,502
Adjustments to Reconcile Net Income to Net Cash Provided by Operating Activities:
Share-Based Compensation	639	656	616
Net Losses (Gains) on Investment Securities	(9,870)	(7,810)	0
Equity in Undistributed Income of Subsidiaries	(39,507)	(21,223)	(18,358)
Net Change in Other Assets and Other Liabilities	(481)	78	1,980
Net Cash Provided by Operating Activities	111,485	134,743	134,740
Investing Activities
Capital Contributions to the Bank	(10,179)	0	0
Proceeds from Sales of Investment Securities	9,870	7,810	0
Purchase of Investment Securities Held-to-Maturity Securities	0	(4,936)	0
Net Cash Provided by (Used in) Investing Activities	(309)	2,874	0
Financing Activities
Proceeds from Issuance of Common Stock	15,364	9,995	14,495
Repurchase of Common Stock	(52,981)	(64,046)	(39,655)
Cash Dividends Paid	(78,367)	(79,660)	(80,534)
Net Cash Provided by (Used in) Financing Activities	(115,984)	(133,711)	(105,694)
Net Change in Cash and Cash Equivalents	(4,808)	3,906	29,046
Cash and Cash Equivalents at Beginning of Period	68,563	64,657	35,611
Cash and Cash Equivalents at End of Period	$ 63,755	$ 68,563	$ 64,657

Uncategorized Items - boh-20151

Label	Element	Value
Commercial Mortgage-Backed Securities Issued by Government Agencies [Member]
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax	us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	$ 0
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax	us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	0
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax	us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	0
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	10,206,000
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	8,581,000
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	4,200,000
Residential Mortgage-Backed Securities issued by U.S. government agencies [Member]
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax	us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	13,816,000
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax	us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	10,986,000
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax	us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	6,546,000
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	1,849,000
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	1,043,000
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	1,267,000
Residential Mortgage-Backed Securities Issued by U.S. Government Sponsored Enterprises [Member]
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax	us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	1,403,000
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax	us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	2,262,000
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax	us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	1,368,000
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	0
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	191,000
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	2,264,000
Commercial Mortgage-Backed Securities Issued by Government Agencies [Member]
Held-to-maturity Securities, Continuous Unrealized Loss Position, Fair Value	us-gaap_HeldToMaturitySecuritiesContinuousUnrealizedLossPositionFairValue	295,685,000
Held-to-maturity Securities, Continuous Unrealized Loss Position, Fair Value	us-gaap_HeldToMaturitySecuritiesContinuousUnrealizedLossPositionFairValue	126,247,000
Held-to-maturity Securities, Debt Maturities, without Single Maturity Date, Fair Value	us-gaap_HeldToMaturitySecuritiesDebtMaturitiesWithoutSingleMaturityDateFairValue	256,957,000
Held-to-maturity Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	us-gaap_HeldToMaturitySecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue	171,091,000
Held-to-maturity Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	us-gaap_HeldToMaturitySecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue	52,207,000
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	us-gaap_HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue	124,594,000
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	us-gaap_HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue	74,040,000
Held-to-maturity Securities, Amortized Cost before Other than Temporary Impairment	us-gaap_HeldToMaturitySecuritiesAmortizedCostBeforeOtherThanTemporaryImpairment	322,367,000
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	us-gaap_HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	179,000
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	us-gaap_HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	958,000
Held-to-maturity Securities, Debt Maturities, without Single Maturity Date, Net Carrying Amount	us-gaap_HeldToMaturitySecuritiesDebtMaturitiesWithoutSingleMaturityDateNetCarryingAmount	256,808,000
Held-to-maturity Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	us-gaap_HeldToMaturitySecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	3,612,000
Held-to-maturity Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	us-gaap_HeldToMaturitySecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	1,274,000
Held-to-maturity Securities, Continuous Unrealized Loss Position, Accumulated Loss	us-gaap_HeldToMaturitySecuritiesContinuousUnrealizedLossPositionAccumulatedLoss	3,791,000
Held-to-maturity Securities, Continuous Unrealized Loss Position, Accumulated Loss	us-gaap_HeldToMaturitySecuritiesContinuousUnrealizedLossPositionAccumulatedLoss	2,232,000
Residential Mortgage-Backed Securities issued by U.S. government agencies [Member]
Held-to-maturity Securities, Continuous Unrealized Loss Position, Fair Value	us-gaap_HeldToMaturitySecuritiesContinuousUnrealizedLossPositionFairValue	1,126,878,000
Held-to-maturity Securities, Continuous Unrealized Loss Position, Fair Value	us-gaap_HeldToMaturitySecuritiesContinuousUnrealizedLossPositionFairValue	976,709,000
Held-to-maturity Securities, Debt Maturities, without Single Maturity Date, Fair Value	us-gaap_HeldToMaturitySecuritiesDebtMaturitiesWithoutSingleMaturityDateFairValue	2,199,964,000
Held-to-maturity Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	us-gaap_HeldToMaturitySecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue	845,911,000
Held-to-maturity Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	us-gaap_HeldToMaturitySecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue	414,207,000
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	us-gaap_HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue	280,967,000
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	us-gaap_HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue	562,502,000
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	us-gaap_HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	1,207,000
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	us-gaap_HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	5,828,000
Held-to-maturity Securities, Debt Maturities, without Single Maturity Date, Net Carrying Amount	us-gaap_HeldToMaturitySecuritiesDebtMaturitiesWithoutSingleMaturityDateNetCarryingAmount	2,191,138,000
Held-to-maturity Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	us-gaap_HeldToMaturitySecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	19,429,000
Held-to-maturity Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	us-gaap_HeldToMaturitySecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	13,239,000
Held-to-maturity Securities, Continuous Unrealized Loss Position, Accumulated Loss	us-gaap_HeldToMaturitySecuritiesContinuousUnrealizedLossPositionAccumulatedLoss	20,636,000
Held-to-maturity Securities, Continuous Unrealized Loss Position, Accumulated Loss	us-gaap_HeldToMaturitySecuritiesContinuousUnrealizedLossPositionAccumulatedLoss	19,067,000
Residential Mortgage-Backed Securities Issued by U.S. Government Sponsored Enterprises [Member]
Held-to-maturity Securities, Continuous Unrealized Loss Position, Fair Value	us-gaap_HeldToMaturitySecuritiesContinuousUnrealizedLossPositionFairValue	45,754,000
Held-to-maturity Securities, Continuous Unrealized Loss Position, Fair Value	us-gaap_HeldToMaturitySecuritiesContinuousUnrealizedLossPositionFairValue	450,147,000
Held-to-maturity Securities, Debt Maturities, without Single Maturity Date, Fair Value	us-gaap_HeldToMaturitySecuritiesDebtMaturitiesWithoutSingleMaturityDateFairValue	646,802,000
Held-to-maturity Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	us-gaap_HeldToMaturitySecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue	0
Held-to-maturity Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	us-gaap_HeldToMaturitySecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue	0
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	us-gaap_HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue	45,754,000
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	us-gaap_HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue	450,147,000
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	us-gaap_HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	15,000
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	us-gaap_HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	2,616,000
Held-to-maturity Securities, Debt Maturities, without Single Maturity Date, Net Carrying Amount	us-gaap_HeldToMaturitySecuritiesDebtMaturitiesWithoutSingleMaturityDateNetCarryingAmount	647,762,000
Held-to-maturity Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	us-gaap_HeldToMaturitySecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	0
Held-to-maturity Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	us-gaap_HeldToMaturitySecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	0
Held-to-maturity Securities, Continuous Unrealized Loss Position, Accumulated Loss	us-gaap_HeldToMaturitySecuritiesContinuousUnrealizedLossPositionAccumulatedLoss	15,000
Held-to-maturity Securities, Continuous Unrealized Loss Position, Accumulated Loss	us-gaap_HeldToMaturitySecuritiesContinuousUnrealizedLossPositionAccumulatedLoss	$ 2,616,000