Bank of Hawaii (BOH) 10-Q 26 Oct 21 2021 Q3 Quarterly report Financial data

Cover page

Cover page - shares	9 Months Ended
	Sep. 30, 2021	Oct. 20, 2021
Entity Information [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Sep. 30, 2021
Document Transition Report	false
Entity File Number	1-6887
Entity Registrant Name	BANK OF HAWAII CORP
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	99-0148992
Entity Address, Address Line One	130 Merchant Street
Entity Address, City or Town	Honolulu
Entity Address, State or Province	HI
Entity Address, Postal Zip Code	96813
City Area Code	888
Local Phone Number	643-3888
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		40,245,113
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	Q3
Entity Central Index Key	0000046195
Current Fiscal Year End Date	--12-31
Amendment Flag	false
NEW YORK STOCK EXCHANGE, INC. [Member] | Common Stock
Entity Information [Line Items]
Title of 12(b) Security	Common Stock, par value $0.01 per share
Trading Symbol	BOH
Security Exchange Name	NYSE
NEW YORK STOCK EXCHANGE, INC. [Member] | Series A Preferred Stock
Entity Information [Line Items]
Title of 12(b) Security	Depository Shares, Each Representing 1/40th Interest in a Share of 4.375% Fixed Rate Non-Cumulative Preferred Stock, Series A
Trading Symbol	BOH.PRA
Security Exchange Name	NYSE

Consolidated Statements of Inco

Consolidated Statements of Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Interest Income
Interest and Fees on Loans and Leases	$ 100,570	$ 103,189	$ 300,763	$ 319,027
Income on Investment Securities
Available-for-Sale	16,396	14,558	48,700	45,845
Held-to-Maturity	16,754	15,967	43,630	51,942
Deposits	2	3	9	13
Funds Sold	382	149	779	787
Other	159	151	526	494
Total Interest Income	134,263	134,017	394,407	418,108
Interest Expense
Deposits	3,837	5,891	12,318	28,105
Securities Sold Under Agreements to Repurchase	3,423	3,622	10,426	11,667
Funds Purchased			1	90
Short-Term Borrowings		1		62
Other Debt	184	337	760	1,361
Total Interest Expense	7,444	9,851	23,505	41,285
Net Interest Income	126,819	124,166	370,902	376,823
Provision for Credit Losses	(10,400)	28,600	(40,800)	102,600
Net Interest Income After Provision for Credit Losses	137,219	95,566	411,702	274,223
Noninterest Income
Trust and Asset Management	11,415	10,752	34,375	32,217
Mortgage Banking	3,136	4,047	12,056	11,020
Service Charges on Deposit Accounts	6,510	6,027	18,703	18,575
Fees, Exchange, and Other Service Charges	13,604	12,296	41,018	34,913
Investment Securities Gains (Losses), Net	(1,259)	(1,121)	(39)	11,125
Annuity and Insurance	735	881	2,348	2,692
Bank-Owned Life Insurance	1,897	1,806	5,877	5,035
Other	5,340	7,046	14,441	23,574
Total Noninterest Income	41,378	41,734	128,779	139,151
Noninterest Expense
Salaries and Benefits	56,447	51,951	168,859	157,129
Net Occupancy	3,079	7,281	17,216	24,997
Net Equipment	8,924	9,223	26,598	25,874
Data Processing	4,722	4,691	15,601	13,895
Professional Fees	2,948	2,743	9,468	9,012
FDIC Insurance	1,594	1,282	4,917	4,296
Other	18,805	12,778	49,252	39,950
Total Noninterest Expense	96,519	89,949	291,911	275,153
Income Before Provision for Income Taxes	82,078	47,351	248,570	138,221
Provision for Income Taxes	20,025	9,511	59,035	26,731
Net Income	62,053	37,840	189,535	111,490
Preferred Stock Dividends	1,006		1,006
Net Income Available to Common Shareholders	$ 61,047	$ 37,840	$ 188,529	$ 111,490
Basic Earnings Per Common Share	$ 1.53	$ 0.95	$ 4.73	$ 2.81
Diluted Earnings Per Common Share	1.52	0.95	4.70	2.80
Dividends Declared Per Common Share	$ 0.70	$ 0.67	$ 2.04	$ 2.01
Basic Weighted Average Common Shares	39,881,437	39,745,120	39,870,450	39,710,252
Diluted Weighted Average Common Shares	40,080,919	39,869,135	40,088,899	39,872,406

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Statement Of Income And Comprehensive Income [Abstract]
Net Income	$ 62,053	$ 37,840	$ 189,535	$ 111,490
Other Comprehensive Income (Loss), Net of Tax:
Net Unrealized Gains (Losses) on Investment Securities	(7,541)	(4,900)	(57,714)	44,389
Defined Benefit Plans	441	374	1,324	1,122
Total Other Comprehensive Income (Loss)	(7,100)	(4,526)	(56,390)	45,511
Comprehensive Income	$ 54,953	$ 33,314	$ 133,145	$ 157,001

Consolidated Statements of Cond

Consolidated Statements of Condition (Unaudited) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Assets
Interest-Bearing Deposits in Other Banks	$ 2,188	$ 1,646
Funds Sold	422,063	333,022
Investment Securities
Available-for-Sale	4,353,520	3,791,689
Held-to-Maturity (Fair Value of $4,895,763 and $3,348,693)	4,899,880	3,262,727
Loans Held for Sale	21,965	82,565
Loans and Leases	12,072,750	11,940,020
Allowance for Credit Losses	(167,920)	(216,252)
Net Loans and Leases	11,904,830	11,723,768
Total Earning Assets	21,604,446	19,195,417
Cash and Due From Banks	231,711	279,420
Premises and Equipment, Net	199,144	199,695
Operating Lease Right-of-Use Assets	97,007	99,542
Accrued Interest Receivable	46,751	49,303
Foreclosed Real Estate	2,332	2,332
Mortgage Servicing Rights	22,099	19,652
Goodwill	31,517	31,517
Bank-Owned Life Insurance	293,230	291,480
Other Assets	437,146	435,293
Total Assets	22,965,383	20,603,651
Deposits
Noninterest-Bearing Demand	7,111,693	5,749,612
Interest-Bearing Demand	4,768,725	4,040,733
Savings	7,540,345	6,759,213
Time	1,072,915	1,662,063
Total Deposits	20,493,678	18,211,621
Securities Sold Under Agreements to Repurchase	450,490	600,590
Other Debt	10,414	60,481
Operating Lease Liabilities	104,452	107,412
Retirement Benefits Payable	49,802	51,197
Accrued Interest Payable	3,415	5,117
Taxes Payable	9,815	2,463
Other Liabilities	246,208	190,263
Total Liabilities	21,368,274	19,229,144
Shareholders’ Equity
Preferred Stock ($.01 par value; authorized 180,000 shares; issued and outstanding: September 30, 2021 - 180,000 shares)	180,000
Common Stock ($.01 par value; authorized 500,000,000 shares; issued / outstanding: September 30, 2021 - 58,559,089 / 40,305,801 and December 31, 2020 - 58,285,624 / 40,119,312)	580	580
Capital Surplus	598,341	591,360
Accumulated Other Comprehensive Income (Loss)	(48,568)	7,822
Retained Earnings	1,916,861	1,811,979
Treasury Stock, at Cost (Shares; September 30, 2021 - 18,253,288 and December 31, 2020 - 18,166,312)	(1,050,105)	(1,037,234)
Total Shareholders’ Equity	1,597,109	1,374,507
Total Liabilities and Shareholders’ Equity	$ 22,965,383	$ 20,603,651

Consolidated Statements of Co_2

Consolidated Statements of Condition (Unaudited) (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Statement Of Financial Position [Abstract]
Held-to-Maturity: Fair Value	$ 4,895,763	$ 3,348,693
Preferred Stock, par value (in dollars per share)	$ 0.01
Preferred Stock, authorized (in shares)	180,000
Preferred Stock, issued (in shares)	180,000
Preferred Stock, outstanding (in shares)	180,000
Common Stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common Stock, authorized (in shares)	500,000,000	500,000,000
Common Stock, issued (in shares)	58,559,089	40,305,801
Common Stock, outstanding (in shares)	58,285,624	40,119,312
Treasury Stock (in shares)	18,253,288	18,166,312

Consolidated Statements of Shar

Consolidated Statements of Shareholders' Equity (Unaudited) - USD ($) $ in Thousands	Total	Cumulative Effect, Period of Adoption, Adjustment	Preferred Stock	Common Stock	Capital Surplus	Accumulated Other Comprehensive Income (Loss)	Retained Earnings	Retained EarningsCumulative Effect, Period of Adoption, Adjustment	Treasury Stock
Balance at Beginning of Period at Dec. 31, 2019	$ 1,286,832	$ 3,632		$ 579	$ 582,566	$ (31,112)	$ 1,761,415	$ 3,632	$ (1,026,616)
Beginning Balance (in shares) at Dec. 31, 2019				40,039,695
Increase (decrease) in shareholders' equity
Net Income	34,742						34,742
Other Comprehensive Income (Loss)	$ 41,933					41,933
Accounting Standards Update Extensible List	Accounting Standards Update 2016-13
Share-Based Compensation	$ 1,497				1,497
Common Stock Issued under Purchase and Equity Compensation Plans	3,761				329		653		2,779
Common Stock Issued under Purchase and Equity Compensation Plans and Related Tax Benefits (in shares)				154,091
Common Stock Repurchased	(17,633)								(17,633)
Common Stock Repurchased (in shares)				(197,276)
Cash Dividends Declared Common Stock (per share)	(26,835)						(26,835)
Balance at End of Period at Mar. 31, 2020	1,327,929			$ 579	584,392	10,821	1,773,607		(1,041,470)
Ending Balance (in shares) at Mar. 31, 2020				39,996,510
Balance at Beginning of Period at Dec. 31, 2019	1,286,832	$ 3,632		$ 579	582,566	(31,112)	1,761,415	$ 3,632	(1,026,616)
Beginning Balance (in shares) at Dec. 31, 2019				40,039,695
Increase (decrease) in shareholders' equity
Net Income	111,490
Other Comprehensive Income (Loss)	45,511					45,511
Balance at End of Period at Sep. 30, 2020	1,361,739			$ 580	588,632	14,399	1,797,763		(1,039,635)
Ending Balance (in shares) at Sep. 30, 2020				40,060,675
Balance at Beginning of Period at Mar. 31, 2020	1,327,929			$ 579	584,392	10,821	1,773,607		(1,041,470)
Beginning Balance (in shares) at Mar. 31, 2020				39,996,510
Increase (decrease) in shareholders' equity
Net Income	38,908						38,908
Other Comprehensive Income (Loss)	8,104					8,104
Share-Based Compensation	2,207				2,207
Common Stock Issued under Purchase and Equity Compensation Plans	1,926			$ 1	347		680		898
Common Stock Issued under Purchase and Equity Compensation Plans and Related Tax Benefits (in shares)				53,672
Common Stock Repurchased	(148)								(148)
Common Stock Repurchased (in shares)				(2,488)
Cash Dividends Declared Common Stock (per share)	(26,844)						(26,844)
Balance at End of Period at Jun. 30, 2020	1,352,082			$ 580	586,946	18,925	1,786,351		(1,040,720)
Ending Balance (in shares) at Jun. 30, 2020				40,047,694
Increase (decrease) in shareholders' equity
Net Income	37,840						37,840
Other Comprehensive Income (Loss)	(4,526)					(4,526)
Share-Based Compensation	1,643				1,643
Common Stock Issued under Purchase and Equity Compensation Plans	1,673				43		429		1,201
Common Stock Issued under Purchase and Equity Compensation Plans and Related Tax Benefits (in shares)				14,919
Common Stock Repurchased	(116)								(116)
Common Stock Repurchased (in shares)				(1,938)
Cash Dividends Declared Common Stock (per share)	(26,857)						(26,857)
Balance at End of Period at Sep. 30, 2020	1,361,739			$ 580	588,632	14,399	1,797,763		(1,039,635)
Ending Balance (in shares) at Sep. 30, 2020				40,060,675
Balance at Beginning of Period at Dec. 31, 2020	1,374,507			$ 580	591,360	7,822	1,811,979		(1,037,234)
Beginning Balance (in shares) at Dec. 31, 2020				40,119,312
Increase (decrease) in shareholders' equity
Net Income	59,949						59,949
Other Comprehensive Income (Loss)	(49,609)					(49,609)
Share-Based Compensation	2,780				2,780
Common Stock Issued under Purchase and Equity Compensation Plans	2,809				664		(845)		2,990
Common Stock Issued under Purchase and Equity Compensation Plans and Related Tax Benefits (in shares)				310,905
Common Stock Repurchased	(3,189)								(3,189)
Common Stock Repurchased (in shares)				(35,983)
Cash Dividends Declared Common Stock (per share)	(27,026)						(27,026)
Balance at End of Period at Mar. 31, 2021	1,360,221			$ 580	594,804	(41,787)	1,844,057		(1,037,433)
Ending Balance (in shares) at Mar. 31, 2021				40,394,234
Balance at Beginning of Period at Dec. 31, 2020	1,374,507			$ 580	591,360	7,822	1,811,979		(1,037,234)
Beginning Balance (in shares) at Dec. 31, 2020				40,119,312
Increase (decrease) in shareholders' equity
Net Income	189,535
Other Comprehensive Income (Loss)	(56,390)					(56,390)
Balance at End of Period at Sep. 30, 2021	1,597,109		$ 180,000	$ 580	598,341	(48,568)	1,916,861		(1,050,105)
Ending Balance (in shares) at Sep. 30, 2021			180,000	40,305,801
Balance at Beginning of Period at Mar. 31, 2021	1,360,221			$ 580	594,804	(41,787)	1,844,057		(1,037,433)
Beginning Balance (in shares) at Mar. 31, 2021				40,394,234
Increase (decrease) in shareholders' equity
Net Income	67,533						67,533
Other Comprehensive Income (Loss)	319					319
Share-Based Compensation	3,342				3,342
Preferred Stock Issued, Net	175,487		$ 180,000		(4,513)
Preferred Stock Issued, Net (in shares)			180,000
Common Stock Issued under Purchase and Equity Compensation Plans	3,851				628		(46)		3,269
Common Stock Issued under Purchase and Equity Compensation Plans and Related Tax Benefits (in shares)				72,421
Common Stock Repurchased	(109)								(109)
Common Stock Repurchased (in shares)				(1,173)
Cash Dividends Declared Common Stock (per share)	(27,113)						(27,113)
Balance at End of Period at Jun. 30, 2021	1,583,531		$ 180,000	$ 580	594,261	(41,468)	1,884,431		(1,034,273)
Ending Balance (in shares) at Jun. 30, 2021			180,000	40,465,482
Increase (decrease) in shareholders' equity
Net Income	62,053						62,053
Other Comprehensive Income (Loss)	(7,100)					(7,100)
Share-Based Compensation	3,536				3,536
Common Stock Issued under Purchase and Equity Compensation Plans	4,499				544		(327)		4,282
Common Stock Issued under Purchase and Equity Compensation Plans and Related Tax Benefits (in shares)				82,939
Common Stock Repurchased	(20,114)								(20,114)
Common Stock Repurchased (in shares)				(242,620)
Cash Dividends Declared Common Stock (per share)	(28,290)						(28,290)
Cash Dividends Declared Preferred Stock	(1,006)						(1,006)
Balance at End of Period at Sep. 30, 2021	$ 1,597,109		$ 180,000	$ 580	$ 598,341	$ (48,568)	$ 1,916,861		$ (1,050,105)
Ending Balance (in shares) at Sep. 30, 2021			180,000	40,305,801

Consolidated Statements of Sh_2

Consolidated Statements of Shareholders' Equity (Unaudited) (Parenthetical) - $ / shares	3 Months Ended						9 Months Ended
	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Sep. 30, 2021	Sep. 30, 2020
Statement Of Stockholders Equity [Abstract]
Dividends Declared Per Common Share	$ 0.70	$ 0.67	$ 0.67	$ 0.67	$ 0.67	$ 0.67	$ 2.04	$ 2.01

Consolidated Statements of Cash

Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Operating Activities
Net Income	$ 189,535	$ 111,490
Adjustments to Reconcile Net Income to Net Cash Provided by Operating Activities:
Provision for Credit Losses	(40,800)	102,600
Depreciation and Amortization	15,751	14,929
Amortization of Deferred Loan and Lease (Fees) Costs, Net	(13,431)	(1,640)
Amortization and Accretion of Premiums/Discounts on Investment Securities, Net	27,147	19,043
Amortization of Operating Lease Right-of-Use Assets	8,562	9,192
Share-Based Compensation	9,658	5,347
Benefit Plan Contributions	(1,274)	(1,071)
Deferred Income Taxes	5,308	(31,725)
Gains on Sale of Premises and Equipment	(9,893)	(1,850)
Net Gains on Sales of Loans and Leases	(12,639)	(9,779)
Net Losses (Gains) on Sales of Investment Securities	39	(11,125)
Proceeds from Sales of Loans Held for Sale	412,153	333,770
Originations of Loans Held for Sale	(319,274)	(316,203)
Net Tax Benefits from Share-Based Compensation	1,349	469
Net Change in Other Assets and Other Liabilities	68,084	(135,753)
Net Cash Provided by Operating Activities	340,275	87,694
Investment Securities Available-for-Sale:
Proceeds from Sales, Prepayments and Maturities	1,138,809	733,619
Purchases	(1,789,229)	(1,238,926)
Investment Securities Held-to-Maturity:
Proceeds from Prepayments and Maturities	914,953	1,000,743
Purchases	(2,569,229)	(1,170,928)
Net Change in Loans and Leases	(149,765)	(782,613)
Purchases of Premises and Equipment	(14,314)	(25,693)
Proceeds from Sale of Premises and Equipment	9,008	1,981
Net Cash Used in Investing Activities	(2,459,767)	(1,481,817)
Financing Activities
Net Change in Deposits	2,282,057	1,954,401
Net Change in Short-Term Borrowings	(150,100)	(2,200)
Proceeds from Long-Term Debt		50,000
Repayments of Long-Term Debt	(50,067)	(75,063)
Net Proceeds from Issuance of Preferred Stock	175,487
Proceeds from Issuance of Common Stock	10,836	7,684
Repurchase of Common Stock	(23,412)	(17,897)
Cash Dividends Paid on Common Stock	(82,429)	(80,536)
Cash Dividends Paid on Preferred Stock	(1,006)
Net Cash Provided by Financing Activities	2,161,366	1,836,389
Net Change in Cash and Cash Equivalents	41,874	442,266
Cash and Cash Equivalents at Beginning of Period	614,088	558,658
Cash and Cash Equivalents at End of Period	655,962	1,000,924
Supplemental Information
Cash Paid for Interest	25,207	42,712
Cash Paid for Income Taxes	41,193	$ 46,949
Non-Cash Investing and Financing Activities:
Transfer from Loans to Loans Held for Sale	$ 23,888

Summary of Significant Accounti

Summary of Significant Accounting Policies	9 Months Ended
	Sep. 30, 2021
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	Note 1. 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 accompanying consolidated financial statements include the accounts of the Parent and its subsidiaries. The Parent’s principal operating subsidiary is Bank of Hawaii (the “Bank”). The consolidated financial statements in this report have not been audited by an independent registered public accounting firm, but, in the opinion of management, reflect all adjustments necessary for a fair presentation of the results for the interim periods. All such adjustments are of a normal recurring nature. Intercompany accounts and transactions have been eliminated in consolidation. Certain prior period information has been reclassified to conform to the current period presentation. Operating results for the interim periods disclosed herein are not necessarily indicative of the results that may be expected for the full fiscal year or for any future period. The accompanying consolidated financial statements have been prepared in accordance with U.S. generally accepted accounting principles (“GAAP”) for interim financial information and with the instructions to Form 10-Q and Rule 10-01 of Regulation S-X. Accordingly, they do not include all of the information and accompanying notes required by GAAP for complete financial statements and should be read in conjunction with the audited consolidated financial statements and related notes included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2020. Preferred Stock Issuance On June 15, 2021, the Company issued and sold 7,200,000 depositary shares (the “depositary shares”), each representing a 1/40 th On October 5, 2021, the Parent’s Board of Directors declared a cash dividend payment of $10.94 per share on its Series A Preferred Stock. This dividend equals $0.2735 per depositary share. The dividend will be payable on November 1, 2021, to shareholders of record of the Series A Preferred Stock at the close of business on October 18, 2021. Accounting Standards Adopted in 2021 In December 2019, the FASB issued ASU No. 2019-12, “Simplifying the Accounting for Income Taxes.”

Cash and Cash Equivalents

Cash and Cash Equivalents	9 Months Ended
	Sep. 30, 2021
Cash And Cash Equivalents [Abstract]
Cash and Cash Equivalents	Note 2. Cash and Cash Equivalents The following table provides a reconciliation of cash and cash equivalents reported within the consolidated statements of condition that sum to the total of the same such amounts shown in the consolidated statements of cash flows: (dollars in thousands) September 30, 2021 December 31, 2020 Interest-Bearing Deposits in Other Banks $ 2,188 $ 1,646 Funds Sold 422,063 333,022 Cash and Due From Banks 231,711 279,420 Total Cash and Cash Equivalents $ 655,962 $ 614,088

Investment Securities

Investment Securities	9 Months Ended
	Sep. 30, 2021
Investments Debt And Equity Securities [Abstract]
Investment Securities	Note 3. Investment Securities The amortized cost, gross unrealized gains and losses, and fair value of the Company’s investment securities as of September 30, 2021, and December 31, 2020, were as follows: (dollars in thousands) Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value September 30, 2021 Available-for-Sale: Debt Securities Issued by the U.S. Treasury and Government Agencies $ 143,409 $ 1,561 $ (106 ) $ 144,864 Debt Securities Issued by States and Political Subdivisions 20,231 839 (2 ) 21,068 Debt Securities Issued by U.S. Government-Sponsored Enterprises 1,509 47 (1 ) 1,555 Debt Securities Issued by Corporations 385,787 3,630 (1,543 ) 387,874 Mortgage-Backed Securities: Residential - Government Agencies 1,410,231 15,435 (8,483 ) 1,417,183 Residential - U.S. Government-Sponsored Enterprises 2,223,697 8,395 (32,040 ) 2,200,052 Commercial - Government Agencies 177,721 3,877 (674 ) 180,924 Total Mortgage-Backed Securities 3,811,649 27,707 (41,197 ) 3,798,159 Total $ 4,362,585 $ 33,784 $ (42,849 ) $ 4,353,520 Held-to-Maturity: Debt Securities Issued by the U.S. Treasury and Government Agencies $ 131,465 $ 277 $ (184 ) $ 131,558 Debt Securities Issued by States and Political Subdivisions 33,254 125 — 33,379 Debt Securities Issued by Corporations 21,133 140 (271 ) 21,002 Mortgage-Backed Securities: Residential - Government Agencies 1,877,804 18,683 (14,525 ) 1,881,962 Residential - U.S. Government-Sponsored Enterprises 2,371,155 22,683 (24,397 ) 2,369,441 Commercial - Government Agencies 465,069 900 (7,548 ) 458,421 Total Mortgage-Backed Securities 4,714,028 42,266 (46,470 ) 4,709,824 Total $ 4,899,880 $ 42,808 $ (46,925 ) $ 4,895,763 December 31, 2020 Available-for-Sale: Debt Securities Issued by the U.S. Treasury and Government Agencies $ 174,409 $ 427 $ (591 ) $ 174,245 Debt Securities Issued by States and Political Subdivisions 23,540 1,301 (1 ) 24,840 Debt Securities Issued by U.S. Government-Sponsored Enterprises 985 77 — 1,062 Debt Securities Issued by Corporations 220,717 4,844 (956 ) 224,605 Mortgage-Backed Securities: Residential - Government Agencies 1,561,603 33,657 (445 ) 1,594,815 Residential - U.S. Government-Sponsored Enterprises 1,497,353 21,254 (324 ) 1,518,283 Commercial - Government Agencies 243,029 10,868 (58 ) 253,839 Total Mortgage-Backed Securities 3,301,985 65,779 (827 ) 3,366,937 Total $ 3,721,636 $ 72,428 $ (2,375 ) $ 3,791,689 Held-to-Maturity: Debt Securities Issued by the U.S. Treasury and Government Agencies $ 7,500 $ 8 $ (8 ) $ 7,500 Debt Securities Issued by States and Political Subdivisions 33,763 741 — 34,504 Debt Securities Issued by Corporations 12,031 251 — 12,282 Mortgage-Backed Securities: Residential - Government Agencies 917,459 30,580 (29 ) 948,010 Residential - U.S. Government-Sponsored Enterprises 2,099,053 51,735 (291 ) 2,150,497 Commercial - Government Agencies 192,921 3,179 (200 ) 195,900 Total Mortgage-Backed Securities 3,209,433 85,494 (520 ) 3,294,407 Total $ 3,262,727 $ 86,494 $ (528 ) $ 3,348,693 The Company elected to exclude accrued interest receivable (“AIR”) from the amortized cost basis of debt securities disclosed throughout this footnote. For available-for-sale (“AFS”) debt securities, AIR totaled $7.9 million and $6.6 million as of September 30, 2021, and December 31, 2020, respectively. For held-to-maturity (“HTM”) debt securities, AIR totaled $9.0 million and $6.8 million as of September 30, 2021, and December 31, 2020, respectively. AIR is included in the “accrued interest receivable” line item on the Company’s consolidated statements of condition. The table below presents an analysis of the contractual maturities of the Company’s investment securities as of September 30, 2021. Debt securities issued by government agencies (Small Business Administration securities) and mortgage-backed securities are disclosed separately in the table below as these investment securities may prepay prior to their scheduled contractual maturity dates. (dollars in thousands) Amortized Cost Fair Value Available-for-Sale: Due in One Year or Less $ 26,227 $ 26,290 Due After One Year Through Five Years 111,281 113,889 Due After Five Years Through Ten Years 270,764 271,069 408,272 411,248 Debt Securities Issued by Government Agencies 142,664 144,113 Mortgage-Backed Securities: Residential - Government Agencies 1,410,231 1,417,183 Residential - U.S. Government-Sponsored Enterprises 2,223,697 2,200,052 Commercial - Government Agencies 177,721 180,924 Total Mortgage-Backed Securities 3,811,649 3,798,159 Total $ 4,362,585 $ 4,353,520 Held-to-Maturity: Due in One Year or Less 33,254 33,379 Due After One Year Through Five Years 17,290 17,285 Due After Five Year Through Ten Years 123,966 124,204 Due After Ten Years 11,342 11,071 185,852 185,939 Mortgage-Backed Securities: Residential - Government Agencies 1,877,804 1,881,962 Residential - U.S. Government-Sponsored Enterprises 2,371,155 2,369,441 Commercial - Government Agencies 465,069 458,421 Total Mortgage-Backed Securities 4,714,028 4,709,824 Total $ 4,899,880 $ 4,895,763 Investment securities with carrying values of $3.5 billion and $3.6 billion as of September 30, 2021, and December 31, 2020, respectively, were pledged to secure deposits of governmental entities, securities sold under agreements to repurchase, and FRB discount window borrowing. The table below presents the gains and losses from the sales of investment securities for the three and nine months ended September 30, 2021, and September 30, 2020: Three Months Ended September 30, Nine Months Ended September 30, (dollars in thousands) 2021 2020 2021 2020 Gross Gains on Sales of Investment Securities $ 110 $ — $ 3,785 $ 14,257 Gross Losses on Sales of Investment Securities (1,369 ) (1,121 ) (3,824 ) (3,132 ) Net Gains (Losses) on Sales of Investment Securities $ (1,259 ) $ (1,121 ) $ (39 ) $ 11,125 Net investment securities losses totaled $1.3 million in the third quarter of 2021 compared to $1.1 million during the same period in 2020. The net loss in the third quarter of 2021 was primarily due to the fees paid to the counterparties of our prior Visa Class B share sale transactions. The net losses of $39 thousand in the first nine months of 2021 was primarily due to $3.8 million of the fees paid to the counterparties of our prior Visa Class B shares and was partially offset by the net gain from the sale of mortgage-backed securities, corporate and government debt securities. The net gain of $11.2 million in the first nine months of 2020 was primarily due to the sale of 80,214 Visa Class B shares. The following table summarizes the Company’s AFS debt securities in an unrealized loss position for which an allowance for credit losses was not deemed necessary, aggregated by major security type and length of time in a continuous unrealized loss position: Less Than 12 Months 12 Months or Longer Total (dollars in thousands) Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses September 30, 2021 Available-for-Sale: Debt Securities Issued by the U.S. Treasury and Government Agencies $ 1,772 $ (4 ) $ 10,458 $ (102 ) $ 12,230 $ (106 ) Debt Securities Issued by States and Political Subdivisions 413 (2 ) — — 413 (2 ) Debt Securities Issued by U.S. Government- Sponsored Enterprises 99 (1 ) — — 99 (1 ) Debt Securities Issued by Corporations 123,230 (734 ) 64,190 (809 ) 187,420 (1,543 ) Mortgage-Backed Securities: Residential - Government Agencies 804,605 (8,313 ) 7,954 (170 ) 812,559 (8,483 ) Residential - U.S. Government-Sponsored Enterprises 1,756,938 (30,015 ) 43,773 (2,025 ) 1,800,711 (32,040 ) Commercial-Government Agencies — — 23,688 (674 ) 23,688 (674 ) Total Mortgage-Backed Securities 2,561,543 (38,328 ) 75,415 (2,869 ) 2,636,958 (41,197 ) Total $ 2,687,057 $ (39,069 ) $ 150,063 $ (3,780 ) $ 2,837,120 $ (42,849 ) December 31, 2020 Available-for-Sale: 1 Debt Securities Issued by the U.S. Treasury and Government Agencies $ 21,338 $ (42 ) $ 87,070 $ (549 ) $ 108,408 $ (591 ) Debt Securities Issued by States and Political Subdivisions — — 26 (1 ) 26 (1 ) Debt Securities Issued by Corporations 65,000 (853 ) 50,000 (103 ) 115,000 (956 ) Mortgage-Backed Securities: Residential - Government Agencies 113,538 (222 ) 28,063 (223 ) 141,601 (445 ) Residential - U.S. Government-Sponsored Enterprises 94,002 (324 ) — — 94,002 (324 ) Commercial - Government Agencies 25,075 (58 ) — — 25,075 (58 ) Total Mortgage-Backed Securities 232,615 (604 ) 28,063 (223 ) 260,678 (827 ) Total $ 318,953 $ (1,499 ) $ 165,159 $ (876 ) $ 484,112 $ (2,375 ) 1 The Company does not believe that the AFS debt securities that were in an unrealized loss position as of September 30, 2021, which were comprised of 213 individual securities, represent a credit loss impairment. The gross unrealized losses were primarily attributable to changes in interest rates, relative to when the investment securities were purchased. As of September 30, 2021, and December 31, 2020, the gross unrealized losses reported for mortgage-backed securities were mostly related to investment securities issued by Ginnie Mae, Fannie Mae, and Freddie Mac. The Company does not intend to sell the investment securities that were in an unrealized loss position and it is not more likely than not that the Company will be required to sell the investment securities before recovery of their amortized cost basis, which may be at maturity. Substantially all of the Company’s HTM debt securities are issued by U.S. government agencies or U.S. government-sponsored enterprises. These securities carry the explicit and/or implicit guarantee of the U.S. government, are widely recognized as “risk free,” and have a long history of zero credit loss. Therefore, an allowance for credit losses for these securities was not deemed necessary as of September 30, 2021. Interest income from taxable and non-taxable investment securities for the three and nine months ended September 30, 2021, and September 30, 2020, were as follows: Three Months Ended September 30, Nine Months Ended September 30, (dollars in thousands) 2021 2020 2021 2020 Taxable $ 32,889 $ 30,027 $ 91,510 $ 96,150 Non-Taxable 261 498 820 1,637 Total Interest Income from Investment Securities $ 33,150 $ 30,525 $ 92,330 $ 97,787 As of September 30, 2021, and December 31, 2020, the carrying value of the Company’s Federal Home Loan Bank of Des Moines stock and Federal Reserve Bank stock was as follows: (dollars in thousands) September 30, 2021 December 31, 2020 Federal Home Loan Bank of Des Moines Stock $ 10,000 $ 12,000 Federal Reserve Bank Stock 21,574 21,340 Total $ 31,574 $ 33,340 These securities can only be redeemed or sold at their par value and only to the respective issuing institution or to another member institution. The Company records these non-marketable equity securities as a component of other assets and periodically evaluates these securities for impairment. Management considers these non-marketable equity securities to be long-term investments. Accordingly, when evaluating these securities for impairment, management considers the ultimate recoverability of the par value rather than recognizing temporary declines in value. Visa Class B Restricted Shares In 2008, the Company received Visa Class B restricted shares as part of Visa’s initial public offering. These shares are transferable only under limited circumstances until they can be converted into the publicly traded Class A common shares. This conversion will not occur until the settlement of certain litigation which will be 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 be insufficient 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 September 30, 2021, the conversion ratio was 1.6228. See Note 11 Derivative Financial Instruments During the second quarter of 2020, the Company sold its remaining 80,214 Visa Class B Shares and recorded a $14.2 million gain on sale. As a result of this sale, the Company no longer owns any Visa Class B shares.

Loans and Leases and the Allowa

Loans and Leases and the Allowance for Credit Losses	9 Months Ended
	Sep. 30, 2021
Loans And Leases And Allowance For Loan And Lease Losses [Abstract]
Loans and Leases and the Allowance for Credit Losses	Note 4. Loans and Leases and the Allowance for Credit Losses Loans and Leases The Company’s loan and lease portfolio was comprised of the following as of September 30, 2021, and December 31, 2020: (dollars in thousands) September 30, 2021 December 31, 2020 Commercial Commercial and Industrial $ 1,325,446 $ 1,357,610 PPP 1 268,480 517,683 Commercial Mortgage 2,994,520 2,854,829 Construction 296,052 259,798 Lease Financing 107,526 110,766 Total Commercial 4,992,024 5,100,686 Consumer Residential Mortgage 4,272,540 4,130,513 Home Equity 1,680,229 1,604,538 Automobile 727,234 708,800 Other 2 400,723 395,483 Total Consumer 7,080,726 6,839,334 Total Loans and Leases $ 12,072,750 $ 11,940,020 1 The PPP amounts presented, which are reported net of deferred costs and fees, were previously included as a component of the Commercial and Industrial loan class. 2 The majority of the Company’s lending activity is with customers located in the State of Hawaii. A substantial portion of the Company’s real estate loans are secured by real estate in Hawaii. Net gains related to sales of residential mortgage loans, recorded as a component of mortgage banking income were $1.2 million and $3.4 million for the three months ended September 30, 2021, and September 30, 2020, respectively, and $5.9 million and $9.0 million for the nine months ended September 30, 2021, and September 30, 2020, respectively. The Company elected to exclude AIR from the amortized cost basis of loans disclosed throughout this footnote. As of September 30, 2021, and December 31, 2020, AIR for loans totaled $29.9 million and $35.9 million, respectively, and is included in the “accrued interest receivable” line item on the Company’s consolidated statements of condition. In response to the COVID-19 pandemic, the Coronavirus Aid, Relief, and Economic Security (“CARES”) Act was passed by Congress and signed into law on March 27, 2020. The CARES Act established the PPP, which provides loans to small businesses who were affected by economic conditions as a result of COVID-19 to provide cash-flow assistance to employers who maintain their eligible costs during the COVID-19 emergency. PPP loans carry an interest rate of one percent, and a maturity of two or five years. These loans are fully guaranteed by the Small Business Administration (“SBA”) and may be eligible for forgiveness by the SBA to the extent that the proceeds are used to cover eligible costs over a period of up to 24 weeks after the loan is made as long as certain conditions are met regarding employee retention and compensation levels. PPP loans deemed eligible for forgiveness by the SBA will be repaid by the SBA to the Company. The SBA pays the Company fees for processing PPP loans. These processing fees are accounted for as loan origination fees and recognized over the contractual loan term as a yield adjustment on the loans. Allowance for Credit Losses (the “Allowance”) The following presents by portfolio segment, the activity in the Allowance for the three and nine months ended September 30, 2021, and September 30, 2020. (dollars in thousands) Commercial Consumer Total Three Months Ended September 30, 2021 Allowance for Credit Losses: Balance at Beginning of Period $ 78,639 $ 101,746 $ 180,385 Loans and Leases Charged-Off (196 ) (3,249 ) (3,445 ) Recoveries on Loans and Leases Previously Charged-Off 118 2,134 2,252 Net Loans and Leases Recovered (Charged-Off) (78 ) (1,115 ) (1,193 ) Provision for Credit Losses (9,894 ) (1,378 ) (11,272 ) Balance at End of Period $ 68,667 $ 99,253 $ 167,920 Nine Months Ended September 30, 2021 Allowance for Credit Losses: Balance at Beginning of Period $ 84,847 $ 131,405 $ 216,252 Loans and Leases Charged-Off (900 ) (13,145 ) (14,045 ) Recoveries on Loans and Leases Previously Charged-Off 374 8,378 8,752 Net Loans and Leases Recovered (Charged-Off) (526 ) (4,767 ) (5,293 ) Provision for Credit Losses (15,654 ) (27,385 ) (43,039 ) Balance at End of Period $ 68,667 $ 99,253 $ 167,920 Three Months Ended September 30, 2020 Allowance for Credit Losses: Balance at Beginning of Period $ 72,522 $ 100,917 $ 173,439 Loans and Leases Charged-Off (171 ) (2,176 ) (2,347 ) Recoveries on Loans and Leases Previously Charged-Off 231 3,573 3,804 Net Loans and Leases Recovered (Charged-Off) 60 1,397 1,457 Provision for Credit Losses 7,685 20,915 28,600 Balance at End of Period $ 80,267 $ 123,229 $ 203,496 Nine Months Ended September 30, 2020 Allowance for Credit Losses: Balance at Beginning of Period (December 31, 2020) $ 73,801 $ 36,226 $ 110,027 CECL Adoption (Day 1) Impact (18,789 ) 17,052 (1,737 ) Balance at Beginning of Period (January 1, 2020) 55,012 53,278 108,290 Loans and Leases Charged-Off (1,520 ) (16,287 ) (17,807 ) Recoveries on Loans and Leases Previously Charged-Off 2,084 8,329 10,413 Net Loans and Leases Recovered (Charged-Off) 564 (7,958 ) (7,394 ) Provision for Credit Losses 24,691 77,909 102,600 Balance at End of Period $ 80,267 $ 123,229 $ 203,496 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. Residential mortgage loans that are past due 90 days or more as to principal or interest may be considered Pass if 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 first mortgage is with the Company and the current combined loan-to-value ratio is 60% or less. Special Mention: Loans and leases in all 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 the consumer portfolio segment. 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 and home equity loans may be current as to principal and interest, but may be considered Classified for a period of generally up to six months following a loan modification. Following a period of demonstrated performance in accordance with the modified contractual terms, the loan may be removed from Classified status. For pass rated credits, risk ratings are certified at a minimum annually. For special mention or classified credits, risk ratings are reviewed for appropriateness on an ongoing basis, monthly, or at a minimum, quarterly. The following presents by credit quality indicator, loan class, and year of origination, the amortized cost basis of the Company’s loans and leases as of September 30, 2021 . Term Loans by Origination Year (dollars in thousands) YTD September 30, 2021 2020 2019 2018 2017 Prior Revolving Loans Revolving Loans Converted to Term Loans Total Loans and Leases September 30, 2021 Commercial Commercial and Industrial Pass $ 335,503 $ 341,306 $ 91,475 $ 80,521 $ 31,948 $ 89,088 $ 257,097 $ 589 $ 1,227,527 Special Mention 2,008 33,200 - - - 153 25,343 26 60,730 Classified 188 2,024 88 2,055 573 18,409 13,785 67 37,189 Total Commercial and Industrial $ 337,699 $ 376,530 $ 91,563 $ 82,576 $ 32,521 $ 107,650 $ 296,225 $ 682 $ 1,325,446 PPP Pass $ 196,837 $ 71,643 $ - $ - $ - $ - $ - $ - $ 268,480 Total PPP $ 196,837 $ 71,643 $ - $ - $ - $ - $ - $ - $ 268,480 Commercial Mortgage Pass $ 608,445 $ 774,572 $ 362,497 $ 264,407 $ 196,531 $ 554,832 $ 61,212 $ - $ 2,822,496 Special Mention 39,129 69,618 - 30,286 - 6,122 - - 145,155 Classified 1,589 10,566 644 - 4,784 9,286 - - 26,869 Total Commercial Mortgage $ 649,163 $ 854,756 $ 363,141 $ 294,693 $ 201,315 $ 570,240 $ 61,212 $ - $ 2,994,520 Construction Pass $ 101,403 $ 118,076 $ 61,403 $ - $ 894 $ - $ 14,276 $ - $ 296,052 Total Construction $ 101,403 $ 118,076 $ 61,403 $ - $ 894 $ - $ 14,276 $ - $ 296,052 Lease Financing Pass $ 18,997 $ 15,935 $ 16,836 $ 10,749 $ 2,586 $ 41,531 $ - $ - $ 106,634 Special Mention - - - 892 - - - - 892 Total Lease Financing $ 18,997 $ 15,935 $ 16,836 $ 11,641 $ 2,586 $ 41,531 $ - $ - $ 107,526 Total Commercial $ 1,304,099 $ 1,436,940 $ 532,943 $ 388,910 $ 237,316 $ 719,421 $ 371,713 $ 682 $ 4,992,024 Consumer Residential Mortgage Pass $ 1,120,627 $ 1,173,498 $ 403,404 $ 201,297 $ 285,312 $ 1,083,359 $ - $ - $ 4,267,497 Classified - - 294 - 2,281 2,468 - - 5,043 Total Residential Mortgage $ 1,120,627 $ 1,173,498 $ 403,698 $ 201,297 $ 287,593 $ 1,085,827 $ - $ - $ 4,272,540 Home Equity Pass $ - $ - $ - $ - $ - $ 3,282 $ 1,636,803 $ 34,308 $ 1,674,393 Classified - - - - - 113 4,920 803 5,836 Total Home Equity $ - $ - $ - $ - $ - $ 3,395 $ 1,641,723 $ 35,111 $ 1,680,229 Automobile Pass $ 233,401 $ 166,682 $ 155,905 $ 105,933 $ 40,967 $ 23,952 $ - $ - $ 726,840 Classified 26 53 87 55 17 156 - - 394 Total Automobile $ 233,427 $ 166,735 $ 155,992 $ 105,988 $ 40,984 $ 24,108 $ - $ - $ 727,234 Other 1 Pass $ 127,788 $ 54,794 $ 105,858 $ 55,663 $ 21,442 $ 6,949 $ 26,151 $ 1,485 $ 400,130 Classified - 93 244 95 78 10 70 3 593 Total Other $ 127,788 $ 54,887 $ 106,102 $ 55,758 $ 21,520 $ 6,959 $ 26,221 $ 1,488 $ 400,723 Total Consumer $ 1,481,842 $ 1,395,120 $ 665,792 $ 363,043 $ 350,097 $ 1,120,289 $ 1,667,944 $ 36,599 $ 7,080,726 Total Loans and Leases $ 2,785,941 $ 2,832,060 $ 1,198,735 $ 751,953 $ 587,413 $ 1,839,710 $ 2,039,657 $ 37,281 $ 12,072,750 1 Comprised of other revolving credit, installment, and lease financing. For the nine months ended September 30, 2021, and September 30, 2020, $2.5 million and $1.3 million revolving loans, respectively, were converted to term loans. The following presents by credit quality indicator, loan class, and year of origination, the amortized cost basis of the Company’s loans and leases as of December 31, 2020. Term Loans by Origination Year (dollars in thousands) 2020 2019 2018 2017 2016 Prior Revolving Loans Revolving Loans Converted to Term Loans Total Loans and Leases December 31, 2020 Commercial Commercial and Industrial Pass $ 426,780 $ 149,024 $ 149,468 $ 49,385 $ 52,354 $ 68,269 $ 342,339 $ 847 $ 1,238,466 Special Mention 11,702 42 - - 110 95 32,319 52 44,320 Classified 32,208 1,734 2,266 777 19 19,166 18,529 125 74,824 Total Commercial and Industrial $ 470,690 $ 150,800 $ 151,734 $ 50,162 $ 52,483 $ 87,530 $ 393,187 $ 1,024 $ 1,357,610 PPP Pass $ 517,683 $ - $ - $ - $ - $ - $ - $ - $ 517,683 Total PPP $ 517,683 $ - $ - $ - $ - $ - $ - $ - $ 517,683 Commercial Mortgage Pass $ 847,676 $ 458,472 $ 350,363 $ 245,157 $ 267,860 $ 425,157 $ 76,869 $ - $ 2,671,554 Special Mention 66,523 28,418 291 7,117 8,665 5,035 - - 116,049 Classified 49,640 655 2,783 274 4,742 9,132 - - 67,226 Total Commercial Mortgage $ 963,839 $ 487,545 $ 353,437 $ 252,548 $ 281,267 $ 439,324 $ 76,869 $ - $ 2,854,829 Construction Pass $ 106,508 $ 105,731 $ 11,275 $ 8,133 $ - $ - $ 28,151 $ - $ 259,798 Total Construction $ 106,508 $ 105,731 $ 11,275 $ 8,133 $ - $ - $ 28,151 $ - $ 259,798 Lease Financing Pass $ 19,906 $ 20,132 $ 13,785 $ 4,202 $ 9,657 $ 41,755 $ - $ - $ 109,437 Classified 33 67 1,092 42 95 - - - 1,329 Total Lease Financing $ 19,939 $ 20,199 $ 14,877 $ 4,244 $ 9,752 $ 41,755 $ - $ - $ 110,766 Total Commercial $ 2,078,659 $ 764,275 $ 531,323 $ 315,087 $ 343,502 $ 568,609 $ 498,207 $ 1,024 $ 5,100,686 Consumer Residential Mortgage Pass $ 1,300,831 $ 576,452 $ 295,522 $ 454,165 $ 545,798 $ 954,120 $ - $ - $ 4,126,888 Classified - 294 - 1,032 - 2,299 - - 3,625 Total Residential Mortgage $ 1,300,831 $ 576,746 $ 295,522 $ 455,197 $ 545,798 $ 956,419 $ - $ - $ 4,130,513 Home Equity Pass $ - $ - $ - $ - $ - $ 4,449 $ 1,556,671 $ 37,559 $ 1,598,679 Classified - - - - - 88 4,693 1,078 5,859 Total Home Equity $ - $ - $ - $ - $ - $ 4,537 $ 1,561,364 $ 38,637 $ 1,604,538 Automobile Pass $ 219,218 $ 213,914 $ 158,216 $ 68,776 $ 33,899 $ 13,850 $ - $ - $ 707,873 Classified 101 245 171 113 161 136 - - 927 Total Automobile $ 219,319 $ 214,159 $ 158,387 $ 68,889 $ 34,060 $ 13,986 $ - $ - $ 708,800 Other 1 Pass $ 71,042 $ 145,549 $ 92,993 $ 39,770 $ 9,225 $ 2,189 $ 32,070 $ 1,485 $ 394,323 Classified 51 419 375 167 42 21 85 - 1,160 Total Other $ 71,093 $ 145,968 $ 93,368 $ 39,937 $ 9,267 $ 2,210 $ 32,155 $ 1,485 $ 395,483 Total Consumer $ 1,591,243 $ 936,873 $ 547,277 $ 564,023 $ 589,125 $ 977,152 $ 1,593,519 $ 40,122 $ 6,839,334 Total Loans and Leases $ 3,669,902 $ 1,701,148 $ 1,078,600 $ 879,110 $ 932,627 $ 1,545,761 $ 2,091,726 $ 41,146 $ 11,940,020 1 Aging Analysis Loans and leases are considered to be past due once becoming 30 days delinquent. For the consumer portfolio, this generally represents two missed monthly payments. The following presents by class, an aging analysis of the Company’s loan and lease portfolio as of September 30, 2021, and December 31, 2020. (dollars in thousands) 30 - 59 Days Past Due 60 - 89 Days Past Due Past Due 90 Days or More Non- Accrual Total Past Due and Non- Accrual Current Total Loans and Leases Non- Accrual Loans and Leases that are Current 2 As of September 30, 2021 Commercial Commercial and Industrial $ 130 $ 1,887 $ — $ 209 $ 2,226 $ 1,323,220 $ 1,325,446 $ 172 PPP — — — — — 268,480 268,480 — Commercial Mortgage — — — 8,309 8,309 2,986,211 2,994,520 8,309 Construction — — — — — 296,052 296,052 — Lease Financing — — — — — 107,526 107,526 — Total Commercial 130 1,887 — 8,518 10,535 4,981,489 4,992,024 8,481 Consumer Residential Mortgage 1,074 3,253 4,776 4,348 13,451 4,259,089 4,272,540 528 Home Equity 2,219 689 2,946 5,422 11,276 1,668,953 1,680,229 1,234 Automobile 6,427 1,110 395 — 7,932 719,302 727,234 — Other 1 2,067 743 593 — 3,403 397,320 400,723 — Total Consumer 11,787 5,795 8,710 9,770 36,062 7,044,664 7,080,726 1,762 Total $ 11,917 $ 7,682 $ 8,710 $ 18,288 $ 46,597 $ 12,026,153 $ 12,072,750 $ 10,243 As of December 31, 2020 Commercial Commercial and Industrial $ 191 $ 59 $ — $ 441 $ 691 $ 1,356,919 $ 1,357,610 $ 285 PPP — — — — — 517,683 517,683 — Commercial Mortgage — — — 8,527 8,527 2,846,302 2,854,829 4,983 Construction — — — — — 259,798 259,798 — Lease Financing — — — — — 110,766 110,766 — Total Commercial 191 59 — 8,968 9,218 5,091,468 5,100,686 5,268 Consumer Residential Mortgage 4,049 2,083 5,274 3,223 14,629 4,115,884 4,130,513 2,100 Home Equity 3,423 3,378 3,187 3,958 13,946 1,590,592 1,604,538 987 Automobile 6,358 2,215 925 — 9,498 699,302 708,800 — Other 1 2,556 1,612 1,160 — 5,328 390,155 395,483 — Total Consumer 16,386 9,288 10,546 7,181 43,401 6,795,933 6,839,334 3,087 Total $ 16,577 $ 9,347 $ 10,546 $ 16,149 $ 52,619 $ 11,887,401 $ 11,940,020 $ 8,355 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. Non-Accrual Loans and Leases The following presents the non-accrual loans and leases as of September 30, 2021, and December 31, 2020. September 30, 2021 December 31, 2020 (dollars in thousands) Non-accrual loans with a related ACL Non-accrual loans without a related ACL Total Non- accrual loans Non-accrual loans with a related ACL Non-accrual loans without a related ACL Total Non- accrual loans Commercial Commercial and Industrial $ 209 $ — $ 209 $ 441 $ — $ 441 Commercial Mortgage 4,765 3,544 8,309 8,527 — 8,527 Total Commercial 4,974 3,544 8,518 8,968 — 8,968 Consumer Residential Mortgage 3,989 359 4,348 3,096 127 3,223 Home Equity 5,422 — 5,422 3,958 — 3,958 Total Consumer 9,411 359 9,770 7,054 127 7,181 Total $ 14,385 $ 3,903 $ 18,288 $ 16,022 $ 127 $ 16,149 All payments received while on non-accrual status are applied against the principal balance of the loan or lease. The Company does not recognize interest income while loans or leases are on non-accrual status. 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 $72.7 million as of September 30, 2021, and $72.5 million as of December 31, 2020. There were $0.2 million and $0.5 million commitments to lend additional funds on loans modified in a TDR as of September 30, 2021, and December 31, 2020, respectively. 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 three and nine months ended September 30, 2021, and September 30, 2020. Loans Modified as a TDR for the Three Months Ended September 30, 2021 Loans Modified as a TDR for the Three Months Ended September 30, 2020 Recorded Increase in Recorded Increase in Troubled Debt Restructurings Investment Allowance Investment Allowance (dollars in thousands) Number of Contracts (as of period end) 1 (as of period end) Number of Contracts (as of period end) 1 (as of period end) Commercial Commercial and Industrial 2 $ 153 $ 2 — $ — $ — Construction — — — 1 92 1 Total Commercial 2 153 2 1 92 1 Consumer Residential Mortgage 2 796 21 — — — Home Equity 2 779 46 2 134 — Automobile 71 1,632 22 12 227 4 Other 2 51 439 16 7 93 4 Total Consumer 126 3,646 105 21 454 8 Total 128 $ 3,799 $ 107 22 $ 546 $ 9 1 The period end balances reflect all paydowns and charge-offs since the modification date. TDRs fully paid-off, charged-off, or foreclosed upon by period end are not included. 2 Comprised of other revolving credit and installment financing. Loans Modified as a TDR for the Nine Months Ended September 30, 2021 Loans Modified as a TDR for the Nine Months Ended September 30, 2020 Recorded Increase in Recorded Increase in Troubled Debt Restructurings Investment Allowance Investment Allowance (dollars in thousands) Number of Contracts (as of period end) 1 (as of period end) Number of Contracts (as of period end) 1 (as of period end) Commercial Commercial and Industrial 7 $ 258 $ 4 3 $ 188 $ 3 Construction — — — 1 1,099 — Total Commercial 7 258 4 4 1,287 3 Consumer Residential Mortgage 14 5,785 584 — — — Home Equity 9 1,488 80 2 134 — Automobile 331 6,902 95 81 1,346 22 Other 2 144 1,321 48 42 357 15 Total Consumer 498 15,496 807 125 1,837 37 Total 505 $ 15,754 $ 811 129 $ 3,124 $ 40 1 2 Comprised of other revolving credit and installment financing. The following presents by class, all loans modified in a TDR that defaulted during the three and nine months ended September 30, 2021, and September 30, 2020, and within twelve months of their modification date. A TDR is considered to be in default once it becomes 60 days or more past due following a modification. Three Months Ended September 30, 2021 Three Months Ended September 30, 2020 TDRs that Defaulted During the Period, Recorded Recorded Within Twelve Months of their Modification Date Number of Investment Number of Investment (dollars in thousands) Contracts (as of period end) 1 Contracts (as of period end) 1 Consumer Automobile 8 $ 157 1 $ 6 Other 2 5 27 0 0 Total Consumer 13 184 1 6 Total 13 $ 184 1 $ 6 Nine Months Ended September 30, 2021 Nine Months Ended September 30, 2020 TDRs that Defaulted During the Period, Recorded Recorded Within Twelve Months of their Modification Date Number of Investment Number of Investment (dollars in thousands) Contracts (as of period end) 1 Contracts (as of period end) 1 Consumer Residential Mortgage 1 $ 528 — $ — Automobile 12 213 33 591 Other 2 12 112 6 38 Total Consumer 25 853 39 629 Total 25 $ 853 39 $ 629 1 The period end balances reflect all paydowns and charge-offs since the modification date. TDRs fully paid-off, charged-off, or foreclosed upon by period end are not included. 2 Comprised of other revolving credit and installment financing. Commercial and consumer loans modified in a TDR are closely monitored for delinquency as an early indicator of possible future default. If loans modified in a TDR subsequently default, the Company evaluates the loan for possible further impairment. The specific Allowance associated with the loan may be increased, adjustments may be made in the allocation of the Allowance, or partial charge-offs may be taken to further write-down the carrying value of the loan. Modifications in response to COVID-19 The Company initially offered short-term loan modifications to assist borrowers during the COVID-19 national emergency. These modifications generally involve principal and/or interest payment deferrals for up to six months. Similar to the initial modifications granted, the additional round of loan modifications generally involve principal and/or interest payment deferrals for up to an additional six months for commercial and consumer loans, and principal-only deferrals for up to an additional 12 months for selected commercial loans. The Company generally continues to accrue and recognize interest income during the deferral period. The Company offers several repayment options such as immediate repayment, repayment over a designated time period or as a balloon payment at maturity, or by extending the loan term. These modifications generally do not involve forgiveness or interest rate reductions. Although our formal assistance programs have ended, the Company continues to work with our customers who are still being impacted by the pandemic. In addition, the Company evaluates the need to record an allowance for the related AIR. As of September 30, 2021, and December 31, 2020, the Company recorded an AIR allowance of $0.7 million and $2.7 million, respectively. The allowance was recorded as a contra-asset against AIR with the offset to provision for credit losses. In addition, the Company elected to deduct the AIR from the AIR Allowance (rather than reversing interest income) when the AIR is deemed uncollectible, which generally occurs when the related loan is placed on nonaccrual status or is charged-off. Company, as lessor, also granted short-term lease concessions on some of its sales-type finance leases for equipment and automobiles. The concessions primarily consists of six-month extension programs whereby lease payments currently due are deferred and shifted to the end of the lease term. Interest income continues to accrue, and in certain cases paid during the deferral period. Additional rounds of lease concessions were not material. In accordance with Section 4013 of the CARES Act and the joint agency statement issued by banking agencies, these COVID-19 related loan and lease modifications are not accounted for as TDRs. These loan and lease modifications totaled $130.4 million (23 loans and leases) for the commercial segment and $7.5 million (31 loans and leases) for the consumer segment as of September 30, 2021, and $311.6 million (210 loans and leases) for the commercial segment and $178.1 million (1,920 loans and leases) for the consumer segment as of December 31, 2020. Foreclosure Proceedings Consumer mortgage loans collateralized by residential real estate property that are in the process of foreclosure totaled $1.5 million as of September 30, 2021.

Mortgage Servicing Rights

Mortgage Servicing Rights	9 Months Ended
	Sep. 30, 2021
Transfers And Servicing Of Financial Assets [Abstract]
Mortgage Servicing Rights	Note 5. Mortgage Servicing Rights The Company’s portfolio of residential mortgage loans serviced for third parties was $2.7 billion as of September 30, 2021, and $2.8 billion as of December 31, 2020. Substantially all of these loans were originated by the Company and sold to third parties on a non-recourse basis with servicing rights retained. These retained servicing rights are recorded as a servicing asset and are initially recorded at fair value (see Note 13 Fair Value of Assets and Liabilities The Company’s mortgage servicing activities include collecting principal, interest, and escrow payments from borrowers; making tax and insurance payments on behalf of borrowers; monitoring delinquencies and executing foreclosure proceedings; and accounting for and remitting principal and interest payments to investors. Servicing income, including late and ancillary fees, was $1.6 million and $1.7 million for the three months ended September 30, 2021, and September 30, 2020, and $4.8 million and $5.4 million for the nine months ended September 30, 2021, and September 30, 2020, 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 three and nine months ended September 30, 2021, and September 30, 2020, the change in the carrying value of the Company’s mortgage servicing rights accounted for under the fair value measurement method was as follows: Three Months Ended September 30, Nine Months Ended September 30, (dollars in thousands) 2021 2020 2021 2020 Balance at Beginning of Period $ 875 $ 1,068 $ 958 $ 1,126 Change in Fair Value Due to Payoffs: (49 ) (50 ) (132 ) (108 ) Balance at End of Period $ 826 $ 1,018 $ 826 $ 1,018 For the three and nine months ended September 30, 2021, and September 30, 2020, the change in the carrying value of the Company’s mortgage servicing rights accounted for under the amortization method was as follows: Three Months Ended September 30, Nine Months Ended September 30, (dollars in thousands) 2021 2020 2021 2020 Balance at Beginning of Period $ 20,598 $ 21,836 $ 18,694 $ 23,896 Servicing Rights that Resulted From Asset Transfers 1,082 872 4,022 3,042 Amortization (1,069 ) (1,271 ) (3,228 ) (3,684 ) Valuation Allowance Recovery (Provision) 662 (568 ) 1,785 (2,385 ) Balance at End of Period $ 21,273 $ 20,869 $ 21,273 $ 20,869 Valuation Allowance: Balance at Beginning of Period $ (2,769 ) $ (1,817 ) $ (3,892 ) $ — Valuation Allowance Recovery (Provision) 662 (568 ) 1,785 (2,385 ) Balance at End of Period $ (2,107 ) $ (2,385 ) $ (2,107 ) $ (2,385 ) Fair Value of Mortgage Servicing Rights Accounted for Under the Amortization Method Beginning of Period $ 20,598 $ 21,836 $ 18,694 $ 25,714 End of Period $ 21,273 $ 20,870 $ 21,273 $ 20,870 The key data and assumptions used in estimating the fair value of the Company’s mortgage servicing rights as of September 30, 2021, and December 31, 2020, were as follows: September 30, 2021 December 31, 2020 Weighted-Average Constant Prepayment Rate 1 11.50 % 14.42 % Weighted-Average Life (in years) 6.00 4.99 Weighted-Average Note Rate 3.67 % 3.87 % Weighted-Average Discount Rate 2 6.67 % 5.81 % 1 Represents annualized loan prepayment rate assumption. 2 Derived from multiple interest rate scenarios that incorporate a spread to a market yield curve and market volatilities. A sensitivity analysis of the Company’s fair value of mortgage servicing rights to changes in certain key assumptions as of September 30, 2021, and December 31, 2020, is presented in the following table. (dollars in thousands) September 30, 2021 December 31, 2020 Constant Prepayment Rate Decrease in fair value from 25 basis points (“bps”) adverse change $ (246 ) $ (203 ) Decrease in fair value from 50 bps adverse change (487 ) (401 ) Discount Rate Decrease in fair value from 25 bps adverse change (223 ) (184 ) Decrease in fair value from 50 bps adverse change (441 ) (365 ) 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.

Affordable Housing Projects Tax

Affordable Housing Projects Tax Credit Partnerships	9 Months Ended
	Sep. 30, 2021
Equity Method Investments And Joint Ventures [Abstract]
Affordable Housing Projects Tax Credit Partnerships	Note 6. Affordable Housing Projects Tax Credit Partnerships The Company makes equity investments in various limited partnerships or limited liability companies 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 these entities 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 or non-managing member in each LIHTC limited partnership or limited liability company, respectively. Each of these entities is managed by an unrelated third-party general partner or managing member who exercises significant control over the affairs of the entity. The general partner or managing member has all the rights, powers and authority granted or permitted to be granted to a general partner of a limited partnership or managing member of a limited liability company. Duties entrusted to the general partner or managing member include, but are not limited to: investment in operating companies, company expenditures, investment of excess funds, borrowing funds, employment of agents, disposition of fund property, prepayment and refinancing of liabilities, votes and consents, contract authority, disbursement of funds, accounting methods, tax elections, bank accounts, insurance, litigation, cash reserve, and use of working capital reserve funds. Except for limited rights granted to the limited partner(s) or non-managing member(s) relating to the approval of certain transactions, the limited partner(s) and non-managing member(s) may not participate in the operation, management, or control of the entity’s business, transact any business in the entity’s name or have any power to sign documents for or otherwise bind the entity. In addition, the general partner or managing member may only be removed by the limited partner(s) or managing member(s) in the event of a failure to comply with the terms of the agreement or negligence in performing its duties. The general partner or managing member of each entity has both the power to direct the activities which most significantly affect the performance of each entity 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 entity. The Company uses the effective yield method to account for its pre-2015 investments in these entities. Beginning January 1, 2015, any new investments that meet the requirements of the proportional amortization method are recognized using the proportional amortization method. The Company’s net affordable housing tax credit investments and related unfunded commitments were $126.9 million and $138.9 million as of September 30, 2021, and December 31, 2020, respectively, and are included in other assets in the consolidated statements of condition. Unfunded Commitments As of September 30, 2021, the expected payments for unfunded affordable housing commitments were as follows: (dollars in thousands) Amount 2021 $ 12,710 2022 6,757 2023 19,025 2024 173 2025 56 Thereafter 3,424 Total Unfunded Commitments $ 42,145 The following table presents tax credits and other tax benefits recognized and amortization expense related to affordable housing for the three and nine months ended September 30, 2021, and September 30, 2020. Three Months Ended September 30, Nine Months Ended September 30, (dollars in thousands) 2021 2020 2021 2020 Effective Yield Method Tax credits and other tax benefits recognized $ 2,151 $ 2,938 $ 6,453 $ 8,814 Amortization Expense in Provision for Income Taxes 1,670 2,347 5,032 7,042 Proportional Amortization Method Tax credits and other tax benefits recognized $ 2,708 $ 1,794 $ 8,178 $ 4,839 Amortization Expense in Provision for Income Taxes 2,332 1,345 7,043 3,580 There were no impairment losses related to LIHTC investments during the nine months ended September 30, 2021, and September 30, 2020.

Balance Sheet Offsetting

Balance Sheet Offsetting	9 Months Ended
	Sep. 30, 2021
Offsetting [Abstract]
Balance Sheet Offsetting	Note 7. Balance Sheet Offsetting The following table presents the fair value of the related collateral pledged against repurchase agreements as of September 30, 2021, and December 31, 2020. Remaining Contractual Maturity of Repurchase Agreements (dollars in thousands) Up to 90 days 91-365 days 1-3 Years After 3 Years Total September 30, 2021 Class of Collateral Pledged: Debt Securities Issued by States and Political Subdivisions $ — $ — $ — $ 490 $ 490 Mortgage-Backed Securities: Residential - Government Agencies — — 43,461 13,602 57,063 Residential - U.S. Government-Sponsored Enterprises — — 231,539 161,398 392,937 Total $ — $ — $ 275,000 $ 175,490 $ 450,490 December 31, 2020 Class of Collateral Pledged: Debt Securities Issued by States and Political Subdivisions $ 100 $ — $ — $ 490 $ 590 Mortgage-Backed Securities: 1 Residential - Government Agencies — — 20,210 83,599 103,809 Residential - U.S. Government-Sponsored Enterprises — — 4,790 491,401 496,191 Total $ 100 $ — $ 25,000 $ 575,490 $ 600,590 1 The following table presents the assets and liabilities subject to an enforceable master netting arrangement, or repurchase agreements as of September 30, 2021, and December 31, 2020. The swap agreements the Company has with our commercial banking customers are not subject to an enforceable master netting arrangement, and therefore, are excluded from this table. Centrally cleared swap agreements between the Company and institutional counterparties are also excluded from this table. See Note 11 Derivative Financial Instruments (i) (ii) (iii) = (i)-(ii) (iv) (v) = (iii)-(iv) Gross Amounts Not Offset in the Statements of Condition (dollars in thousands) Gross Amounts Recognized in the Statements of Condition Gross Amounts Offset in the Statements of Condition Net Amounts Presented in the Statements of Condition Netting Adjustments per Master Netting Arrangements Fair Value of Collateral Pledged/ Received 1 Net Amount September 30, 2021 Assets: Interest Rate Swap Agreements: Institutional Counterparties $ 22 $ — $ 22 $ 22 $ — $ — Liabilities: Interest Rate Swap Agreements: Institutional Counterparties $ 8,297 $ — $ 8,297 $ 22 $ 53,265 $ (44,990 ) Repurchase Agreements: Private Institutions 450,000 — 450,000 — 450,000 — Government Entities 490 — 490 — 490 — $ 450,490 $ — $ 450,490 $ — $ 450,490 $ — December 31, 2020 Assets: Interest Rate Swap Agreements: Institutional Counterparties $ 5 $ — $ 5 $ 5 $ — $ — Liabilities: Interest Rate Swap Agreements: Institutional Counterparties 17,202 — 17,202 5 7,911 9,286 Repurchase Agreements: Private Institutions 600,000 — 600,000 — 600,000 — Government Entities 590 — 590 — 590 — $ 600,590 $ — $ 600,590 $ — $ 600,590 $ — 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 investment securities pledged was $538.1 million and $635.2 million as of September 30, 2021, and December 31, 2020, respectively. For repurchase agreements with government entities, the fair value of investment securities pledged was $1.5 million and $2.5 million as of September 30, 2021, and December 31, 2020, respectively.

Accumulated Other Comprehensive

Accumulated Other Comprehensive Income (Loss)	9 Months Ended
	Sep. 30, 2021
Comprehensive Income Net Of Tax [Abstract]
Accumulated Other Comprehensive Income (Loss)	Note 8. Accumulated Other Comprehensive Income (Loss) The following table presents the components of other comprehensive income (loss) for the three and nine months ended September 30, 2021, and September 30, 2020: (dollars in thousands) Before Tax Tax Effect Net of Tax Three Months Ended September 30, 2021 Net Unrealized Gains (Losses) on Investment Securities: Net Unrealized Gains (Losses) Arising During the Period $ (10,263 ) $ (2,719 ) $ (7,544 ) Amounts Reclassified from Accumulated Other Comprehensive Income (Loss) that (Increase) Decrease Net Income: (Gain) Loss on Sale (83 ) (22 ) (61 ) Amortization of Unrealized Holding (Gains) Losses on Held-to- Maturity Securities 1 87 23 64 Net Unrealized Gains (Losses) on Investment Securities (10,259 ) (2,718 ) (7,541 ) Defined Benefit Plans: Amortization of Net Actuarial Losses (Gains) 662 175 487 Amortization of Prior Service Credit (62 ) (16 ) (46 ) Defined Benefit Plans, Net 600 159 441 Other Comprehensive Income (Loss) $ (9,659 ) $ (2,559 ) $ (7,100 ) Three Months Ended September 30, 2020 Net Unrealized Gains (Losses) on Investment Securities: Net Unrealized Gains (Losses) Arising During the Period $ (6,771 ) $ (1,795 ) $ (4,976 ) Amounts Reclassified from Accumulated Other Comprehensive Income (Loss) that (Increase) Decrease Net Income: Amortization of Unrealized Holding (Gains) Losses on Held-to- Maturity Securities 1 103 27 76 Net Unrealized Gains (Losses) on Investment Securities (6,668 ) (1,768 ) (4,900 ) Defined Benefit Plans: Amortization of Net Actuarial Losses (Gains) 570 151 419 Amortization of Prior Service Credit (61 ) (16 ) (45 ) Defined Benefit Plans, Net 509 135 374 Other Comprehensive Income (Loss) $ (6,159 ) $ (1,633 ) $ (4,526 ) Nine Months Ended September 30, 2021 Net Unrealized Gains (Losses) on Investment Securities: Net Unrealized Gains (Losses) Arising During the Period $ (75,360 ) $ (19,954 ) $ (55,406 ) Amounts Reclassified from Accumulated Other Comprehensive Income (Loss) that (Increase) Decrease Net Income: (Gain) Loss on Sale (3,758 ) (1,014 ) (2,744 ) Amortization of Unrealized Holding (Gains) Losses on Held-to- Maturity Securities 1 593 157 436 Net Unrealized Gains (Losses) on Investment Securities (78,525 ) (20,811 ) (57,714 ) Defined Benefit Plans: Amortization of Net Actuarial Losses (Gains) 1,985 525 1,460 Amortization of Prior Service Credit (185 ) (49 ) (136 ) Defined Benefit Plans, Net 1,800 476 1,324 Other Comprehensive Income (Loss) $ (76,725 ) $ (20,335 ) $ (56,390 ) Nine Months Ended September 30, 2020 Net Unrealized Gains (Losses) on Investment Securities: Net Unrealized Gains (Losses) Arising During the Period $ 60,177 $ 15,945 $ 44,232 Amounts Reclassified from Accumulated Other Comprehensive Income (Loss) that (Increase) Decrease Net Income: (Gain) Loss on Sale (77 ) (21 ) (56 ) Amortization of Unrealized Holding (Gains) Losses on Held-to- Maturity Securities 1 289 76 213 Net Unrealized Gains (Losses) on Investment Securities 60,389 16,000 44,389 Defined Benefit Plans: Amortization of Net Actuarial Losses (Gains) 1,711 454 1,257 Amortization of Prior Service Credit (184 ) (49 ) (135 ) Defined Benefit Plans, Net 1,527 405 1,122 Other Comprehensive Income (Loss) $ 61,916 $ 16,405 $ 45,511 1 The amount relates to the amortization/accretion of unrealized net gains and losses related to the Company’s reclassification of available-for-sale investment securities to the held-to-maturity category. The unrealized net gains/losses will be amortized/accreted over the remaining life of the investment securities as an adjustment of yield. The following table presents the changes in each component of accumulated other comprehensive income (loss), net of tax, for the three and nine months ended September 30, 2021, and September 30, 2020: (dollars in thousands) Investment Securities- Available- for-Sale Investment Securities- Held-to-Maturity Defined Benefit Plans Accumulated Other Comprehensive Income (Loss) Three Months Ended September 30, 2021 Balance at Beginning of Period $ 950 $ (51 ) $ (42,367 ) $ (41,468 ) Other Comprehensive Income (Loss) Before Reclassifications (7,544 ) — — (7,544 ) Amounts Reclassified from Accumulated Other Comprehensive Income (Loss) (61 ) 64 441 444 Total Other Comprehensive Income (Loss) (7,605 ) 64 441 (7,100 ) Balance at End of Period $ (6,655 ) $ 13 $ (41,926 ) $ (48,568 ) Three Months Ended September 30, 2020 Balance at Beginning of Period $ 57,511 $ (578 ) $ (38,008 ) $ 18,925 Other Comprehensive Income (Loss) Before Reclassifications (4,976 ) — — (4,976 ) Amounts Reclassified from Accumulated Other Comprehensive Income (Loss) — 76 374 450 Total Other Comprehensive Income (Loss) (4,976 ) 76 374 (4,526 ) Balance at End of Period $ 52,535 $ (502 ) $ (37,634 ) $ 14,399 Nine Months Ended September 30, 2021 Balance at Beginning of Period $ 51,495 $ (423 ) $ (43,250 ) $ 7,822 Other Comprehensive Income (Loss) Before Reclassifications (55,406 ) — — (55,406 ) Amounts Reclassified from Accumulated Other Comprehensive Income (Loss) (2,744 ) 436 1,324 (984 ) Total Other Comprehensive Income (Loss) (58,150 ) 436 1,324 (56,390 ) Balance at End of Period $ (6,655 ) $ 13 $ (41,926 ) $ (48,568 ) Nine Months Ended September 30, 2020 Balance at Beginning of Period $ 8,359 $ (715 ) $ (38,756 ) $ (31,112 ) Other Comprehensive Income (Loss) Before Reclassifications 44,232 — — 44,232 Amounts Reclassified from Accumulated Other Comprehensive Income (Loss) (56 ) 213 1,122 1,279 Total Other Comprehensive Income (Loss) 44,176 213 1,122 45,511 Balance at End of Period $ 52,535 $ (502 ) $ (37,634 ) $ 14,399 The following table presents the amounts reclassified out of each component of accumulated other comprehensive income (loss) for the three and nine months ended September 30, 2021, and September 30, 2020: Details about Accumulated Other Comprehensive Income (Loss) Components Amount Reclassified from Accumulated Other Comprehensive Income (Loss) 1 Affected Line Item in the Statement Where Net Income Is Presented Three Months Ended September 30, (dollars in thousands) 2021 2020 Amortization of Unrealized Holding Gains (Losses) on Investment Securities Held-to-Maturity $ (87 ) $ (103 ) Interest Income 23 27 Provision for Income Tax (64 ) (76 ) Net of Tax Sale of Investment Securities Available-for-Sale 83 — Investment Securities Gains (Losses), Net (22 ) — Provision for Income Tax 61 — Net of tax Amortization of Defined Benefit Plan Items Prior Service Credit 2 62 62 Net Actuarial Losses 2 (662 ) (571 ) (600 ) (509 ) Total Before Tax 159 135 Provision for Income Tax (441 ) (374 ) Net of Tax Total Reclassifications for the Period $ (444 ) $ (450 ) Net of Tax Details about Accumulated Other Comprehensive Income (Loss) Components Amount Reclassified from Accumulated Other Comprehensive Income (Loss) 1 Affected Line Item in the Statement Where Net Income Is Presented Nine Months Ended September 30, (dollars in thousands) 2021 2020 Amortization of Unrealized Holding Gains (Losses) on Investment Securities Held-to-Maturity $ (593 ) $ (289 ) Interest Income 157 76 Provision for Income Tax (436 ) (213 ) Net of Tax Sale of Investment Securities Available-for-Sale 3,758 77 Investment Securities Gains (Losses), Net (1,014 ) (21 ) Provision for Income Tax 2,744 56 Net of tax Amortization of Defined Benefit Plan Items Prior Service Credit 2 185 185 Net Actuarial Losses 2 (1,985 ) (1,712 ) (1,800 ) (1,527 ) Total Before Tax 476 405 Provision for Income Tax (1,324 ) (1,122 ) Net of Tax Total Reclassifications for the Period $ 984 $ (1,279 ) Net of Tax 1 2

Earnings Per Common Share

Earnings Per Common Share	9 Months Ended
	Sep. 30, 2021
Earnings Per Share [Abstract]
Earnings Per Common Share	Note 9. Earnings Per Common Share Earnings per common share is computed using the two-class method. The following is a reconciliation of the weighted average number of common shares and antidilutive stock options and restricted stock outstanding for the three and nine months ended September 30, 2021, and September 30, 2020: Three Months Ended September 30, Nine Months Ended September 30, (dollars in thousands, except shares and per share amounts) 2021 2020 2021 2020 Numerator: Net Income Available to Common Shareholders $ 61,047 $ 37,840 $ 188,529 $ 111,490 Denominator: Weighted Average Common Shares Outstanding - Basic 39,881,437 39,745,120 39,870,450 39,710,252 Dilutive Effect of Equity Based Awards 199,482 124,015 218,449 162,154 Weighted Average Common Shares Outstanding - Diluted 40,080,919 39,869,135 40,088,899 39,872,406 Earnings Per Common Share: Basic $ 1.53 $ 0.95 $ 4.73 $ 2.81 Diluted $ 1.52 $ 0.95 $ 4.70 $ 2.80 Antidilutive Stock Options and Restricted Stock Outstanding 47,087 108,207 44,217 106,140

Business Segments

Business Segments	9 Months Ended
	Sep. 30, 2021
Segment Reporting [Abstract]
Business Segments	Note 10. Business Segments The Company’s business segments are defined as Consumer Banking, Commercial Banking, and Treasury and Other. The Company’s internal management accounting process measures the performance of these business segments. This process, which is not necessarily comparable with the process used by any other financial institution, uses various techniques to assign balance sheet and income statement amounts to the business segments, including allocations of income, expense, the provision for credit losses, and capital. This process is dynamic and requires certain allocations based on judgment and other subjective factors. Unlike financial accounting, there is no comprehensive authoritative guidance for management accounting that is equivalent to GAAP. Previously reported results have been reclassified to conform to the current reporting structure. The net interest income of the business segments reflects the results of a funds transfer pricing process that matches assets and liabilities with similar interest rate sensitivity and maturity characteristics and reflects the allocation of net interest income related to the Company’s overall asset and liability management activities on a proportionate basis. The basis for the allocation of net interest income is a function of the Company’s assumptions that are subject to change based on changes in current interest rates and market conditions. Funds transfer pricing also serves to transfer interest rate risk to Treasury. However, the other business segments have some latitude to retain certain interest rate exposures related to customer pricing decisions within guidelines. The provision for credit losses for the Consumer Banking and Commercial Banking business segments reflects the actual net charge-offs of those 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 26% effective income tax rate. However, the provision for income taxes for our Leasing business unit (included in the Commercial Banking segment) and Auto Leasing portfolio and Pacific Century Life Insurance business unit (both included in the Consumer Banking segment) are assigned their actual effective income tax rates due to the unique relationship that income taxes have with their products. The residual income tax expense or benefit to arrive at the consolidated effective tax rate is included in Treasury and Other. Consumer Banking Consumer Banking offers a broad range of financial products and services, including loan, deposit and insurance products; private banking and international client banking services; trust services; investment management; and institutional investment advisory services. Consumer Banking also provides a full service brokerage offering equities, mutual funds, life insurance, and annuity products. 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. Private banking and personal trust groups assist individuals and families in building and preserving their wealth by providing investment, credit, and trust services to high-net-worth individuals. The investment management group manages portfolios utilizing a variety of investment products. Also within Consumer Banking, institutional client services offer investment advice to corporations, government entities, and foundations. Products and services from Consumer Banking are delivered to customers through 54 branch locations and 303 ATMs throughout Hawaii and the Pacific Islands, e-Bankoh (on-line banking service), a 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. In addition, Commercial Banking offers deposit products to government entities in Hawaii. Commercial real estate mortgages focus on customers that include investors, developers, and builders predominantly domiciled in Hawaii. Commercial Banking also includes international banking and provides merchant services to its customers. Treasury and Other Treasury consists of corporate asset and liability management activities, including interest rate risk management and a foreign currency exchange business. This segment’s assets and liabilities (and related interest income and expense) consist of interest-bearing deposits, investment securities, federal funds sold and purchased, and short and long-term borrowings. The primary sources of noninterest income are from bank-owned life insurance, net gains from the sale of investment securities, and foreign exchange income related to customer-driven currency requests from merchants and island visitors. The net residual effect of the transfer pricing of assets and liabilities is included in Treasury, along with the elimination of intercompany transactions. Other organizational units (Technology, Operations, Marketing, Human Resources, Finance, Credit and Risk Management, and Corporate and Regulatory Administration) provide a wide-range of support to the Company’s other income earning segments. Expenses incurred by these support units are charged to the business segments through an internal cost allocation process. Selected business segment financial information as of and for the three and nine months ended September 30, 2021, and September 30, 2020, were as follows: (dollars in thousands) Consumer Banking Commercial Banking Treasury and Other Consolidated Total Three Months Ended September 30, 2021 Net Interest Income $ 72,062 $ 50,088 $ 4,669 $ 126,819 Provision for Credit Losses 1,235 (42 ) (11,593 ) (10,400 ) Net Interest Income After Provision for Credit Losses 70,827 50,130 16,262 137,219 Noninterest Income 32,046 7,906 1,426 41,378 Noninterest Expense (71,377 ) (15,924 ) (9,218 ) (96,519 ) Income Before Provision for Income Taxes 31,496 42,112 8,470 82,078 Provision for Income Taxes (8,001 ) (10,373 ) (1,651 ) (20,025 ) Net Income $ 23,495 $ 31,739 $ 6,819 $ 62,053 Total Assets as of September 30, 2021 $ 7,530,513 $ 5,087,831 $ 10,347,039 $ 22,965,383 Three Months Ended September 30, 2020 Net Interest Income $ 73,868 $ 47,797 $ 2,501 $ 124,166 Provision for Credit Losses (1,372 ) (85 ) 30,057 28,600 Net Interest Income (Loss) After Provision for Credit Losses 75,240 47,882 (27,556 ) 95,566 Noninterest Income 31,776 7,672 2,286 41,734 Noninterest Expense (69,408 ) (15,430 ) (5,111 ) (89,949 ) Income (Loss) Before Provision for Income Taxes 37,608 40,124 (30,381 ) 47,351 Provision for Income Taxes (9,627 ) (9,784 ) 9,900 (9,511 ) Net Income (Loss) $ 27,981 $ 30,340 $ (20,481 ) $ 37,840 Total Assets as of September 30, 2020 $ 7,383,822 $ 5,027,836 $ 7,697,831 $ 20,109,489 Nine Months Ended September 30, 2021 Net Interest Income $ 212,991 $ 146,269 $ 11,642 $ 370,902 Provision for Credit Losses 5,088 205 (46,093 ) (40,800 ) Net Interest Income After Provision for Credit Losses 207,903 146,064 57,735 411,702 Noninterest Income 98,344 22,339 8,096 128,779 Noninterest Expense (222,426 ) (47,343 ) (22,142 ) (291,911 ) Income Before Provision for Income Taxes 83,821 121,060 43,689 248,570 Provision for Income Taxes (20,840 ) (29,634 ) (8,561 ) (59,035 ) Net Income $ 62,981 $ 91,426 $ 35,128 $ 189,535 Total Assets as of September 30, 2021 $ 7,530,513 $ 5,087,831 $ 10,347,039 $ 22,965,383 Nine Months Ended September 30, 2020 Net Interest Income $ 221,003 $ 144,253 $ 11,567 $ 376,823 Provision for Credit Losses 8,215 (819 ) 95,204 102,600 Net Interest Income (Loss) After Provision for Credit Losses 212,788 145,072 (83,637 ) 274,223 Noninterest Income 93,309 26,483 19,359 139,151 Noninterest Expense (210,744 ) (47,552 ) (16,857 ) (275,153 ) Income (Loss) Before Provision for Income Taxes 95,353 124,003 (81,135 ) 138,221 Provision for Income Taxes (24,235 ) (30,278 ) 27,782 (26,731 ) Net Income (Loss) $ 71,118 $ 93,725 $ (53,353 ) $ 111,490 Total Assets as of September 30, 2020 $ 7,383,822 $ 5,027,836 $ 7,697,831 $ 20,109,489

Derivative Financial Instrument

Derivative Financial Instruments	9 Months Ended
	Sep. 30, 2021
Derivative Instruments And Hedging Activities Disclosure [Abstract]
Derivative Financial Instruments	Note 11. Derivative Financial Instruments The notional amount and fair value of the Company’s derivative financial instruments as of September 30, 2021, and December 31, 2020, were as follows: September 30, 2021 December 31, 2020 (dollars in thousands) Notional Amount Fair Value Notional Amount Fair Value Interest Rate Lock Commitments $ 48,993 $ 1,222 $ 102,881 $ 4,947 Forward Commitments 60,163 213 158,759 (740 ) Interest Rate Swap Agreements Receive Fixed/Pay Variable Swaps 1,440,485 38,162 1,362,778 90,130 Pay Fixed/Receive Variable Swaps 1,440,485 (8,275 ) 1,362,778 (17,197 ) Foreign Exchange Contracts 97,172 (645 ) 90,587 866 Conversion Rate Swap Agreement 135,735 — 133,286 — The following table presents the Company’s derivative financial instruments, their fair values, and their location in the consolidated statements of condition as of September 30, 2021, and December 31, 2020: Derivative Financial Instruments September 30, 2021 December 31, 2020 Not Designated as Hedging Instruments 1 Asset Liability Asset Liability (dollars in thousands) Derivatives Derivatives Derivatives Derivatives Interest Rate Lock Commitments $ 1,222 $ — $ 4,947 $ — Forward Commitments 227 14 — 740 Interest Rate Swap Agreements 47,211 17,324 90,342 17,409 Foreign Exchange Contracts 61 706 878 12 Total $ 48,721 $ 18,044 $ 96,167 $ 18,161 1 Asset derivatives are included in other assets and liability derivatives are included in other liabilities in the consolidated statements of condition. The following table presents the Company’s derivative financial instruments and the amount and location of the net gains or losses recognized in the consolidated statements of income for the three and nine months ended September 30, 2021, and September 30, 2020: Location of Derivative Financial Instruments Net Gains (Losses) Three Months Ended Nine Months Ended Not Designated as Hedging Instruments Recognized in the September 30, September 30, (dollars in thousands) Statements of Income 2021 2020 2021 2020 Interest Rate Lock Commitments Mortgage Banking $ 2,083 $ 4,903 $ 6,927 $ 15,556 Forward Commitments Mortgage Banking (53 ) (595 ) 1,598 (3,652 ) Interest Rate Swap Agreements Other Noninterest Income 2,147 2,575 4,848 12,041 Foreign Exchange Contracts Other Noninterest Income 401 467 1,120 1,403 Total $ 4,578 $ 7,350 $ 14,493 $ 25,348 As of September 30, 2021, and December 31, 2020, 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. Interest Rate Swap Agreements 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 swap agreements with third-party financial institutions. The swap agreements are free-standing derivatives and are recorded at fair value in the Company’s consolidated statements of condition (asset positions are included in other assets and liability positions are included in other liabilities). The Company is party to master netting arrangements with its financial institution counterparties; however, the Company does not offset assets and liabilities under these arrangements for financial statement presentation purposes. The master netting arrangements provide for a single net settlement of all swap agreements, as well as collateral, in the event of default on, or termination of, any one contract. Collateral, usually in the form of cash or marketable securities, is posted by the party (i.e., the Company or the financial institution counterparty) with net liability positions in accordance with contract thresholds. The Company had net liability positions with its financial institution counterparties totaling $8.3 million and $17.2 million as of September 30, 2021, and December 31, 2020, respectively. Parties to over-the-counter derivatives which are centrally cleared through a clearinghouse exchange daily payments that reflect the daily change in value of the derivatives. Effective 2017, these payments, commonly referred to as variation margin, are recorded as settlements of the derivatives’ mark-to-market exposure rather than collateral against the exposures. This rule change effectively results in all centrally cleared derivatives having a fair value that approximates zero on a daily basis. Substantially all of our swap agreements originated after the rule change are centrally cleared. Conversion Rate Swap Agreements As certain sales of Visa Class B restricted shares were completed, the Company entered into a conversion rate swap agreement with the buyer that requires payment to the buyer in the event Visa further reduces the conversion ratio of Class B into Class A unrestricted common shares. In the event of Visa increasing the conversion ratio, the buyer would be required to make payment to the Company. As of September 30, 2021, and December 31, 2020, the conversion rate swap agreement was valued at zero (i.e., no contingent liability recorded) as further reductions to the conversion ratio were deemed neither probable nor reasonably estimable by management. See Note 3 Investment Securities

Commitments, Contingencies, and

Commitments, Contingencies, and Guarantees	9 Months Ended
	Sep. 30, 2021
Commitments And Contingencies Disclosure [Abstract]
Commitments, Contingencies, and Guarantees	Note 12. Commitments, Contingencies, and Guarantees The Company’s credit commitments as of September 30, 2021, and December 31, 2020, were as follows: (dollars in thousands) September 30, 2021 December 31, 2020 Unfunded Commitments to Extend Credit $ 2,973,153 $ 2,787,123 Standby Letters of Credit 125,932 100,186 Commercial Letters of Credit 16,715 10,511 Total Credit Commitments $ 3,115,800 $ 2,897,820 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 letters of credit are conditional commitments issued by the Company to guarantee the performance of a customer to a third-party. Standby letters of credit generally become payable upon the failure of the customer to perform according to the terms of the underlying contract with the third-party, while commercial letters of credit are issued specifically to facilitate commerce and typically result in the commitment being drawn on when the underlying transaction is consummated between the customer and a third party. The contractual amount of these letters of credit represents the maximum potential future payments guaranteed by the Company. The Company has recourse against the customer for any amount it is required to pay to a third-party under a standby letter of credit, and generally holds cash or deposits as collateral on those standby letters of credit for which collateral is deemed necessary. Contingencies The Company is subject to various pending and threatened legal proceedings arising 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 using the most recent information available. On a case-by-case basis, reserves are established for those legal claims for which it is probable that a loss will be incurred and the amount of such loss can be reasonably estimated. Based on information currently available, management believes that the eventual outcome of these claims against the Company will not be materially in excess of such amounts reserved by the Company. However, in the event of unexpected future developments, it is possible that the ultimate resolution of these matters may result in a loss that materially exceeds the reserves established by the Company.

Fair Value of Assets and Liabil

Fair Value of Assets and Liabilities	9 Months Ended
	Sep. 30, 2021
Fair Value Disclosures [Abstract]
Fair Value of Assets and Liabilities	Note 13. Fair Value of Assets and Liabilities Fair Value Hierarchy Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability in the principal or most advantageous market for an asset or liability in an orderly transaction between market participants at the measurement date. GAAP established a fair value hierarchy that prioritizes the use of inputs used in valuation methodologies into the following three levels: Level 1: Inputs to the valuation methodology are quoted prices, unadjusted, for identical assets or liabilities in active markets. A quoted price in an active market provides the most reliable evidence of fair value and is used to measure fair value whenever available. A contractually binding sales price also provides reliable evidence of fair value. Level 2: Inputs to the valuation methodology include quoted prices for similar assets or liabilities in active markets; inputs to the valuation methodology include quoted prices for identical or similar assets or liabilities in markets that are not active; or inputs to the valuation methodology that utilize model-based techniques for which all significant assumptions are observable in the market. Level 3: Inputs to the valuation methodology are unobservable and significant to the fair value measurement; inputs to the valuation methodology that utilize model-based techniques for which significant assumptions are not observable in the market; or inputs to the valuation methodology that require significant management judgment or estimation, some of which may be internally developed. In some instances, an instrument may fall into multiple levels of the fair value hierarchy. In such instances, the instrument’s level within the fair value hierarchy is based on the lowest of the three levels (with Level 3 being the lowest) that is significant to the fair value measurement. Our assessment of the significance of an input requires judgment and considers factors specific to the instrument. Assets and Liabilities Measured at Fair Value on a Recurring Basis Investment Securities Available-for-Sale 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. 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 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 the Company believes 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 IRLCs, forward commitments, interest rate swap agreements, foreign exchange contracts, and Visa Class B to Class A shares conversion rate swap agreements. The fair values of IRLCs are calculated based on the value of the underlying loan held for sale, which in turn is based on quoted prices for similar loans in the secondary market. However, this value is adjusted by a factor which considers the likelihood that the loan in a locked position will ultimately close. This factor, the closing ratio, is derived from the Bank’s internal data and is adjusted using significant management judgment. As such, IRLCs are classified as Level 3 measurements. Forward commitments are classified as Level 2 measurements as they are primarily based on quoted prices from the secondary market based on the settlement date of the contracts, interpolated or extrapolated, if necessary, to estimate a fair value as of the end of the reporting period. The fair values of interest rate swap agreements are calculated using a discounted cash flow approach and utilize Level 2 observable inputs such as a market yield curve, effective date, maturity date, notional amount, and stated interest rate. The valuation methodology for cleared interest rate swaps with financial institution counterparties (and the related customer interest rate swaps) is based on the Secured Overnight Financing Rate, while the valuation methodology for uncleared interest rate swaps is based on the Effective Federal Funds 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 September 30, 2021, and December 31, 2020, the conversion rate swap agreements were valued at zero as reductions to the conversion ratio were neither probable nor reasonably estimable by management. See Note 11 Derivative Financial Instruments 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 September 30, 2021, and December 31, 2020: Quoted Prices in Active Markets for Identical Assets or Liabilities Significant Other Observable Inputs Significant Unobservable Inputs (dollars in thousands) (Level 1) (Level 2) (Level 3) Total September 30, 2021 Assets: Investment Securities Available-for-Sale Debt Securities Issued by the U.S. Treasury and Government Agencies $ 751 $ 144,113 $ — $ 144,864 Debt Securities Issued by States and Political Subdivisions — 21,068 — 21,068 Debt Securities Issued by U.S. Government-Sponsored Enterprises — 1,555 — 1,555 Debt Securities Issued by Corporations — 387,874 — 387,874 Mortgage-Backed Securities: Residential - Government Agencies — 1,417,183 — 1,417,183 Residential - U.S. Government-Sponsored Enterprises — 2,200,052 — 2,200,052 Commercial - Government Agencies — 180,924 — 180,924 Total Mortgage-Backed Securities — 3,798,159 — 3,798,159 Total Investment Securities Available-for-Sale 751 4,352,769 — 4,353,520 Loans Held for Sale — 21,965 — 21,965 Mortgage Servicing Rights — — 826 826 Other Assets 55,167 — — 55,167 Derivatives 1 — 288 48,433 48,721 Total Assets Measured at Fair Value on a Recurring Basis as of September 30, 2021 $ 55,918 $ 4,375,022 $ 49,259 $ 4,480,199 Liabilities: Derivatives 1 $ — $ 720 $ 17,324 $ 18,044 Total Liabilities Measured at Fair Value on a Recurring Basis as of September 30, 2021 $ — $ 720 $ 17,324 $ 18,044 December 31, 2020 Assets: Investment Securities Available-for-Sale Debt Securities Issued by the U.S. Treasury and Government Agencies $ 921 $ 173,324 $ — $ 174,245 Debt Securities Issued by States and Political Subdivisions — 24,840 — 24,840 Debt Securities Issued by U.S. Government-Sponsored Enterprises — 1,062 — 1,062 Debt Securities Issued by Corporations — 224,605 — 224,605 Mortgage-Backed Securities: Residential - Government Agencies — 1,594,815 — 1,594,815 Residential - U.S. Government-Sponsored Enterprises — 1,518,283 — 1,518,283 Commercial - Government Agencies — 253,839 — 253,839 Total Mortgage-Backed Securities — 3,366,937 — 3,366,937 Total Investment Securities Available-for-Sale 921 3,790,768 — 3,791,689 Loans Held for Sale — 82,565 — 82,565 Mortgage Servicing Rights — — 958 958 Other Assets 53,410 — — 53,410 Derivatives 1 — 878 95,289 96,167 Total Assets Measured at Fair Value on a Recurring Basis as of December 31, 2020 $ 54,331 $ 3,874,211 $ 96,247 $ 4,024,789 Liabilities: Derivatives 1 $ — $ 752 $ 17,409 $ 18,161 Total Liabilities Measured at Fair Value on a Recurring Basis as of December 31, 2020 $ — $ 752 $ 17,409 $ 18,161 1 The fair value of each class of derivatives is shown in Note 11 Derivative Financial Instruments For the three and nine months ended September 30, 2021, and September 30, 2020, the changes in Level 3 assets and liabilities measured at fair value on a recurring basis were as follows: (dollars in thousands) Mortgage Servicing Rights 1 Net Derivative Assets and Liabilities 2 Three Months Ended September 30, 2021 Balance as of July 1, 2021 $ 875 $ 37,957 Realized and Unrealized Net Gains (Losses): Included in Net Income (49 ) 2,095 Transfers to Loans Held for Sale — (3,068 ) Variation Margin Payments — (5,875 ) Balance as of September 30, 2021 $ 826 $ 31,109 Total Unrealized Net Gains (Losses) Included in Net Income Related to Assets Still Held as of September 30, 2021 $ — $ 31,109 Three Months Ended September 30, 2020 Balance as of July 1, 2020 $ 1,068 $ 88,995 Realized and Unrealized Net Gains (Losses): Included in Net Income (50 ) 4,909 Transfers to Loans Held for Sale — (4,242 ) Variation Margin Payments — (1,840 ) Balance as of September 30, 2020 $ 1,018 $ 87,822 Total Unrealized Net Gains (Losses) Included in Net Income Related to Assets Still Held as of September 30, 2020 $ — $ 87,822 Nine Months Ended September 30, 2021 Balance as of January 1, 2021 $ 958 77,880 Realized and Unrealized Net Gains (Losses): Included in Net Income (132 ) 7,008 Transfers to Loans Held for Sale — (10,652 ) Variation Margin Payments — (43,127 ) Balance as of September 30, 2021 $ 826 31,109 Total Unrealized Net Gains (Losses) Included in Net Income Related to Assets Still Held as of September 30, 2021 $ — $ 31,109 Nine Months Ended September 30, 2020 Balance as of January 1, 2020 $ 1,126 $ 22,573 Realized and Unrealized Net Gains (Losses): Included in Net Income (108 ) 15,372 Transfers to Loans Held for Sale — (13,521 ) Variation Margin Payments — 63,398 Balance as of September 30, 2020 $ 1,018 $ 87,822 Total Unrealized Net Gains (Losses) Included in Net Income Related to Assets Still Held as of September 30, 2020 $ — $ 87,822 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 September 30, 2021, and December 31, 2020, the significant unobservable inputs used in the fair value measurements were as follows: (dollars in thousands) Valuation Technique Description Range Weighted Average 1 Fair Value September 30, 2021 Mortgage Servicing Rights Discounted Cash Flow Constant Prepayment Rate 8.13 % - 14.43 % 11.50 % $ 22,099 Discount Rate 5.65 % - 6.74 % 6.67 % $ — Net Derivative Assets and Liabilities: Interest Rate Lock Commitments Pricing Model Closing Ratio 84.10 % - 100.00 % 92.84 % $ 1,222 Interest Rate Swap Agreements Discounted Cash Flow Credit Factor 0.00 % - 0.49 % 0.14 % $ 29,887 December 31, 2020 Mortgage Servicing Rights Discounted Cash Flow Constant Prepayment Rate 8.71 % - 15.89 % 14.42 % $ 19,652 Discount Rate 5.69 % - 6.28 % 5.81 % $ — Net Derivative Assets and Liabilities: Interest Rate Lock Commitments Pricing Model Closing Ratio 84.10 % - 99.00 % 90.76 % $ 4,947 Interest Rate Swap Agreements Discounted Cash Flow Credit Factor 0.00 % - 0.49 % 0.29 % $ 72,933 1 Unobservable inputs for mortgage servicing rights and interest rate lock commitments were weighted by loan amount. Unobservable inputs for interest rate swap agreements were weighted by fair value. 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. 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 September 30, 2021, and December 31, 2020. (dollars in thousands) Fair Value Hierarchy Net Carrying Amount Valuation Allowance September 30, 2021 Mortgage Servicing Rights - amortization method Level 3 $ 21,273 $ (2,107 ) December 31, 2020 Mortgage Servicing Rights - amortization method Level 3 $ 18,694 $ (3,892 ) The write-down of mortgage servicing rights accounted for under the amortization method was primarily due to changes in certain key assumptions used to estimate fair value. As previously mentioned, all of the Company's mortgage servicing rights are classified as Level 3 measurements due to the use of significant unobservable inputs, as well as significant management judgment and estimation. Fair Value Option The 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 September 30, 2021, and December 31, 2020. (dollars in thousands) Aggregate Fair Value Aggregate Unpaid Principal Aggregate Fair Value Less Aggregate Unpaid Principal September 30, 2021 Loans Held for Sale $ 21,965 $ 21,376 $ 589 December 31, 2020 Loans Held for Sale $ 82,565 $ 78,577 $ 3,988 Changes in the estimated fair value of residential mortgage loans held for sale are reported as a component of mortgage banking income in the Company’s consolidated statements of income. For the three and nine months ended September 30, 2021, and September 30, 2020, 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 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 September 30, 2021, and December 31, 2020. This table excludes financial instruments for which the carrying amount approximates fair value. For short-term financial assets such as cash and cash equivalents, the carrying amount is a reasonable estimate of fair value due to the relatively short time between the origination of the instrument and its expected realization. For non-marketable equity securities such as Federal Home Loan Bank and Federal Reserve Bank stock, the carrying amount is a reasonable estimate of fair value as these securities can only be redeemed or sold at their par value and only to the respective issuing government supported institution or to another member institution. For financial liabilities such as noninterest-bearing demand, interest-bearing demand, and savings deposits, the carrying amount is a reasonable estimate of fair value due to these products having no stated maturity. Fair Value Measurements Carrying Quoted Prices in Active Markets for Identical Assets or Liabilities Significant Other Observable Inputs Significant Unobservable Inputs (dollars in thousands) Amount Fair Value (Level 1) (Level 2) (Level 3) September 30, 2021 Financial Instruments - Assets Investment Securities Held-to-Maturity $ 4,899,880 $ 4,895,763 $ 131,558 $ 4,764,205 $ — Loans 1 11,718,951 11,962,539 — — 11,962,539 Financial Instruments - Liabilities Time Deposits 1,072,915 1,074,210 — 1,074,210 — Securities Sold Under Agreements to Repurchase 450,490 477,228 — 477,228 — December 31, 2020 Financial Instruments - Assets Investment Securities Held-to-Maturity $ 3,262,727 $ 3,348,693 $ 7,500 $ 3,341,193 $ — Loans 1 11,536,011 12,019,151 — — 12,019,151 Financial Instruments - Liabilities Time Deposits 1,662,063 1,667,774 — 1,667,774 — Securities Sold Under Agreements to Repurchase 600,590 649,039 — 649,039 — Other Debt 2 50,000 51,546 — 51,546 — 1 Carrying amount is net of unearned income and the Allowance. 2 Excludes finance lease obligations.

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Policies)	9 Months Ended
	Sep. 30, 2021
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation Bank of Hawaii Corporation (the “Parent”) is a Delaware corporation and a bank holding company headquartered in Honolulu, Hawaii. Bank of Hawaii Corporation and its subsidiaries (collectively, the “Company”) provide a broad range of financial products and services to customers in Hawaii, Guam, and other Pacific Islands. The 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 accompanying consolidated financial statements include the accounts of the Parent and its subsidiaries. The Parent’s principal operating subsidiary is Bank of Hawaii (the “Bank”). The consolidated financial statements in this report have not been audited by an independent registered public accounting firm, but, in the opinion of management, reflect all adjustments necessary for a fair presentation of the results for the interim periods. All such adjustments are of a normal recurring nature. Intercompany accounts and transactions have been eliminated in consolidation. Certain prior period information has been reclassified to conform to the current period presentation. Operating results for the interim periods disclosed herein are not necessarily indicative of the results that may be expected for the full fiscal year or for any future period. The accompanying consolidated financial statements have been prepared in accordance with U.S. generally accepted accounting principles (“GAAP”) for interim financial information and with the instructions to Form 10-Q and Rule 10-01 of Regulation S-X. Accordingly, they do not include all of the information and accompanying notes required by GAAP for complete financial statements and should be read in conjunction with the audited consolidated financial statements and related notes included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2020.
Preferred Stock Issuance	Preferred Stock Issuance On June 15, 2021, the Company issued and sold 7,200,000 depositary shares (the “depositary shares”), each representing a 1/40 th On October 5, 2021, the Parent’s Board of Directors declared a cash dividend payment of $10.94 per share on its Series A Preferred Stock. This dividend equals $0.2735 per depositary share. The dividend will be payable on November 1, 2021, to shareholders of record of the Series A Preferred Stock at the close of business on October 18, 2021.
Accounting Standards Adopted in 2021	Accounting Standards Adopted in 2021 In December 2019, the FASB issued ASU No. 2019-12, “Simplifying the Accounting for Income Taxes.”

Cash and Cash Equivalents (Tabl

Cash and Cash Equivalents (Tables)	9 Months Ended
	Sep. 30, 2021
Cash And Cash Equivalents [Abstract]
Schedule of Reconciliation of Cash and Cash Equivalents	The following table provides a reconciliation of cash and cash equivalents reported within the consolidated statements of condition that sum to the total of the same such amounts shown in the consolidated statements of cash flows: (dollars in thousands) September 30, 2021 December 31, 2020 Interest-Bearing Deposits in Other Banks $ 2,188 $ 1,646 Funds Sold 422,063 333,022 Cash and Due From Banks 231,711 279,420 Total Cash and Cash Equivalents $ 655,962 $ 614,088

Investment Securities (Tables)

Investment Securities (Tables)	9 Months Ended
	Sep. 30, 2021
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 September 30, 2021, and December 31, 2020, were as follows: (dollars in thousands) Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value September 30, 2021 Available-for-Sale: Debt Securities Issued by the U.S. Treasury and Government Agencies $ 143,409 $ 1,561 $ (106 ) $ 144,864 Debt Securities Issued by States and Political Subdivisions 20,231 839 (2 ) 21,068 Debt Securities Issued by U.S. Government-Sponsored Enterprises 1,509 47 (1 ) 1,555 Debt Securities Issued by Corporations 385,787 3,630 (1,543 ) 387,874 Mortgage-Backed Securities: Residential - Government Agencies 1,410,231 15,435 (8,483 ) 1,417,183 Residential - U.S. Government-Sponsored Enterprises 2,223,697 8,395 (32,040 ) 2,200,052 Commercial - Government Agencies 177,721 3,877 (674 ) 180,924 Total Mortgage-Backed Securities 3,811,649 27,707 (41,197 ) 3,798,159 Total $ 4,362,585 $ 33,784 $ (42,849 ) $ 4,353,520 Held-to-Maturity: Debt Securities Issued by the U.S. Treasury and Government Agencies $ 131,465 $ 277 $ (184 ) $ 131,558 Debt Securities Issued by States and Political Subdivisions 33,254 125 — 33,379 Debt Securities Issued by Corporations 21,133 140 (271 ) 21,002 Mortgage-Backed Securities: Residential - Government Agencies 1,877,804 18,683 (14,525 ) 1,881,962 Residential - U.S. Government-Sponsored Enterprises 2,371,155 22,683 (24,397 ) 2,369,441 Commercial - Government Agencies 465,069 900 (7,548 ) 458,421 Total Mortgage-Backed Securities 4,714,028 42,266 (46,470 ) 4,709,824 Total $ 4,899,880 $ 42,808 $ (46,925 ) $ 4,895,763 December 31, 2020 Available-for-Sale: Debt Securities Issued by the U.S. Treasury and Government Agencies $ 174,409 $ 427 $ (591 ) $ 174,245 Debt Securities Issued by States and Political Subdivisions 23,540 1,301 (1 ) 24,840 Debt Securities Issued by U.S. Government-Sponsored Enterprises 985 77 — 1,062 Debt Securities Issued by Corporations 220,717 4,844 (956 ) 224,605 Mortgage-Backed Securities: Residential - Government Agencies 1,561,603 33,657 (445 ) 1,594,815 Residential - U.S. Government-Sponsored Enterprises 1,497,353 21,254 (324 ) 1,518,283 Commercial - Government Agencies 243,029 10,868 (58 ) 253,839 Total Mortgage-Backed Securities 3,301,985 65,779 (827 ) 3,366,937 Total $ 3,721,636 $ 72,428 $ (2,375 ) $ 3,791,689 Held-to-Maturity: Debt Securities Issued by the U.S. Treasury and Government Agencies $ 7,500 $ 8 $ (8 ) $ 7,500 Debt Securities Issued by States and Political Subdivisions 33,763 741 — 34,504 Debt Securities Issued by Corporations 12,031 251 — 12,282 Mortgage-Backed Securities: Residential - Government Agencies 917,459 30,580 (29 ) 948,010 Residential - U.S. Government-Sponsored Enterprises 2,099,053 51,735 (291 ) 2,150,497 Commercial - Government Agencies 192,921 3,179 (200 ) 195,900 Total Mortgage-Backed Securities 3,209,433 85,494 (520 ) 3,294,407 Total $ 3,262,727 $ 86,494 $ (528 ) $ 3,348,693
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 September 30, 2021. Debt securities issued by government agencies (Small Business Administration securities) and mortgage-backed securities are disclosed separately in the table below as these investment securities may prepay prior to their scheduled contractual maturity dates. (dollars in thousands) Amortized Cost Fair Value Available-for-Sale: Due in One Year or Less $ 26,227 $ 26,290 Due After One Year Through Five Years 111,281 113,889 Due After Five Years Through Ten Years 270,764 271,069 408,272 411,248 Debt Securities Issued by Government Agencies 142,664 144,113 Mortgage-Backed Securities: Residential - Government Agencies 1,410,231 1,417,183 Residential - U.S. Government-Sponsored Enterprises 2,223,697 2,200,052 Commercial - Government Agencies 177,721 180,924 Total Mortgage-Backed Securities 3,811,649 3,798,159 Total $ 4,362,585 $ 4,353,520 Held-to-Maturity: Due in One Year or Less 33,254 33,379 Due After One Year Through Five Years 17,290 17,285 Due After Five Year Through Ten Years 123,966 124,204 Due After Ten Years 11,342 11,071 185,852 185,939 Mortgage-Backed Securities: Residential - Government Agencies 1,877,804 1,881,962 Residential - U.S. Government-Sponsored Enterprises 2,371,155 2,369,441 Commercial - Government Agencies 465,069 458,421 Total Mortgage-Backed Securities 4,714,028 4,709,824 Total $ 4,899,880 $ 4,895,763
Schedule of Gains (Losses) on Sales of Investment Securities	The table below presents the gains and losses from the sales of investment securities for the three and nine months ended September 30, 2021, and September 30, 2020: Three Months Ended September 30, Nine Months Ended September 30, (dollars in thousands) 2021 2020 2021 2020 Gross Gains on Sales of Investment Securities $ 110 $ — $ 3,785 $ 14,257 Gross Losses on Sales of Investment Securities (1,369 ) (1,121 ) (3,824 ) (3,132 ) Net Gains (Losses) on Sales of Investment Securities $ (1,259 ) $ (1,121 ) $ (39 ) $ 11,125
Schedule of AFS Debt Securities in an Unrealized Loss Position	The following table summarizes the Company’s AFS debt securities in an unrealized loss position for which an allowance for credit losses was not deemed necessary, aggregated by major security type and length of time in a continuous unrealized loss position: Less Than 12 Months 12 Months or Longer Total (dollars in thousands) Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses September 30, 2021 Available-for-Sale: Debt Securities Issued by the U.S. Treasury and Government Agencies $ 1,772 $ (4 ) $ 10,458 $ (102 ) $ 12,230 $ (106 ) Debt Securities Issued by States and Political Subdivisions 413 (2 ) — — 413 (2 ) Debt Securities Issued by U.S. Government- Sponsored Enterprises 99 (1 ) — — 99 (1 ) Debt Securities Issued by Corporations 123,230 (734 ) 64,190 (809 ) 187,420 (1,543 ) Mortgage-Backed Securities: Residential - Government Agencies 804,605 (8,313 ) 7,954 (170 ) 812,559 (8,483 ) Residential - U.S. Government-Sponsored Enterprises 1,756,938 (30,015 ) 43,773 (2,025 ) 1,800,711 (32,040 ) Commercial-Government Agencies — — 23,688 (674 ) 23,688 (674 ) Total Mortgage-Backed Securities 2,561,543 (38,328 ) 75,415 (2,869 ) 2,636,958 (41,197 ) Total $ 2,687,057 $ (39,069 ) $ 150,063 $ (3,780 ) $ 2,837,120 $ (42,849 ) December 31, 2020 Available-for-Sale: 1 Debt Securities Issued by the U.S. Treasury and Government Agencies $ 21,338 $ (42 ) $ 87,070 $ (549 ) $ 108,408 $ (591 ) Debt Securities Issued by States and Political Subdivisions — — 26 (1 ) 26 (1 ) Debt Securities Issued by Corporations 65,000 (853 ) 50,000 (103 ) 115,000 (956 ) Mortgage-Backed Securities: Residential - Government Agencies 113,538 (222 ) 28,063 (223 ) 141,601 (445 ) Residential - U.S. Government-Sponsored Enterprises 94,002 (324 ) — — 94,002 (324 ) Commercial - Government Agencies 25,075 (58 ) — — 25,075 (58 ) Total Mortgage-Backed Securities 232,615 (604 ) 28,063 (223 ) 260,678 (827 ) Total $ 318,953 $ (1,499 ) $ 165,159 $ (876 ) $ 484,112 $ (2,375 ) 1
Schedule of Interest Income from Taxable and Non-taxable Investment Securities	Interest income from taxable and non-taxable investment securities for the three and nine months ended September 30, 2021, and September 30, 2020, were as follows: Three Months Ended September 30, Nine Months Ended September 30, (dollars in thousands) 2021 2020 2021 2020 Taxable $ 32,889 $ 30,027 $ 91,510 $ 96,150 Non-Taxable 261 498 820 1,637 Total Interest Income from Investment Securities $ 33,150 $ 30,525 $ 92,330 $ 97,787
Schedule of Carrying Value of Federal Home Loan Bank of Des Moines Stock and Federal Reserve Bank Stock	As of September 30, 2021, and December 31, 2020, the carrying value of the Company’s Federal Home Loan Bank of Des Moines stock and Federal Reserve Bank stock was as follows: (dollars in thousands) September 30, 2021 December 31, 2020 Federal Home Loan Bank of Des Moines Stock $ 10,000 $ 12,000 Federal Reserve Bank Stock 21,574 21,340 Total $ 31,574 $ 33,340

Loans and Leases and the Allo_2

Loans and Leases and the Allowance for Credit Losses (Tables)	9 Months Ended
	Sep. 30, 2021
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 September 30, 2021, and December 31, 2020: (dollars in thousands) September 30, 2021 December 31, 2020 Commercial Commercial and Industrial $ 1,325,446 $ 1,357,610 PPP 1 268,480 517,683 Commercial Mortgage 2,994,520 2,854,829 Construction 296,052 259,798 Lease Financing 107,526 110,766 Total Commercial 4,992,024 5,100,686 Consumer Residential Mortgage 4,272,540 4,130,513 Home Equity 1,680,229 1,604,538 Automobile 727,234 708,800 Other 2 400,723 395,483 Total Consumer 7,080,726 6,839,334 Total Loans and Leases $ 12,072,750 $ 11,940,020 1 The PPP amounts presented, which are reported net of deferred costs and fees, were previously included as a component of the Commercial and Industrial loan class. 2
Schedule of Activity in Allowance by Portfolio Segment	The following presents by portfolio segment, the activity in the Allowance for the three and nine months ended September 30, 2021, and September 30, 2020. (dollars in thousands) Commercial Consumer Total Three Months Ended September 30, 2021 Allowance for Credit Losses: Balance at Beginning of Period $ 78,639 $ 101,746 $ 180,385 Loans and Leases Charged-Off (196 ) (3,249 ) (3,445 ) Recoveries on Loans and Leases Previously Charged-Off 118 2,134 2,252 Net Loans and Leases Recovered (Charged-Off) (78 ) (1,115 ) (1,193 ) Provision for Credit Losses (9,894 ) (1,378 ) (11,272 ) Balance at End of Period $ 68,667 $ 99,253 $ 167,920 Nine Months Ended September 30, 2021 Allowance for Credit Losses: Balance at Beginning of Period $ 84,847 $ 131,405 $ 216,252 Loans and Leases Charged-Off (900 ) (13,145 ) (14,045 ) Recoveries on Loans and Leases Previously Charged-Off 374 8,378 8,752 Net Loans and Leases Recovered (Charged-Off) (526 ) (4,767 ) (5,293 ) Provision for Credit Losses (15,654 ) (27,385 ) (43,039 ) Balance at End of Period $ 68,667 $ 99,253 $ 167,920 Three Months Ended September 30, 2020 Allowance for Credit Losses: Balance at Beginning of Period $ 72,522 $ 100,917 $ 173,439 Loans and Leases Charged-Off (171 ) (2,176 ) (2,347 ) Recoveries on Loans and Leases Previously Charged-Off 231 3,573 3,804 Net Loans and Leases Recovered (Charged-Off) 60 1,397 1,457 Provision for Credit Losses 7,685 20,915 28,600 Balance at End of Period $ 80,267 $ 123,229 $ 203,496 Nine Months Ended September 30, 2020 Allowance for Credit Losses: Balance at Beginning of Period (December 31, 2020) $ 73,801 $ 36,226 $ 110,027 CECL Adoption (Day 1) Impact (18,789 ) 17,052 (1,737 ) Balance at Beginning of Period (January 1, 2020) 55,012 53,278 108,290 Loans and Leases Charged-Off (1,520 ) (16,287 ) (17,807 ) Recoveries on Loans and Leases Previously Charged-Off 2,084 8,329 10,413 Net Loans and Leases Recovered (Charged-Off) 564 (7,958 ) (7,394 ) Provision for Credit Losses 24,691 77,909 102,600 Balance at End of Period $ 80,267 $ 123,229 $ 203,496
Schedule of Recorded Investment in Loans and Leases by Class and Credit Quality Indicator	The following presents by credit quality indicator, loan class, and year of origination, the amortized cost basis of the Company’s loans and leases as of September 30, 2021 . Term Loans by Origination Year (dollars in thousands) YTD September 30, 2021 2020 2019 2018 2017 Prior Revolving Loans Revolving Loans Converted to Term Loans Total Loans and Leases September 30, 2021 Commercial Commercial and Industrial Pass $ 335,503 $ 341,306 $ 91,475 $ 80,521 $ 31,948 $ 89,088 $ 257,097 $ 589 $ 1,227,527 Special Mention 2,008 33,200 - - - 153 25,343 26 60,730 Classified 188 2,024 88 2,055 573 18,409 13,785 67 37,189 Total Commercial and Industrial $ 337,699 $ 376,530 $ 91,563 $ 82,576 $ 32,521 $ 107,650 $ 296,225 $ 682 $ 1,325,446 PPP Pass $ 196,837 $ 71,643 $ - $ - $ - $ - $ - $ - $ 268,480 Total PPP $ 196,837 $ 71,643 $ - $ - $ - $ - $ - $ - $ 268,480 Commercial Mortgage Pass $ 608,445 $ 774,572 $ 362,497 $ 264,407 $ 196,531 $ 554,832 $ 61,212 $ - $ 2,822,496 Special Mention 39,129 69,618 - 30,286 - 6,122 - - 145,155 Classified 1,589 10,566 644 - 4,784 9,286 - - 26,869 Total Commercial Mortgage $ 649,163 $ 854,756 $ 363,141 $ 294,693 $ 201,315 $ 570,240 $ 61,212 $ - $ 2,994,520 Construction Pass $ 101,403 $ 118,076 $ 61,403 $ - $ 894 $ - $ 14,276 $ - $ 296,052 Total Construction $ 101,403 $ 118,076 $ 61,403 $ - $ 894 $ - $ 14,276 $ - $ 296,052 Lease Financing Pass $ 18,997 $ 15,935 $ 16,836 $ 10,749 $ 2,586 $ 41,531 $ - $ - $ 106,634 Special Mention - - - 892 - - - - 892 Total Lease Financing $ 18,997 $ 15,935 $ 16,836 $ 11,641 $ 2,586 $ 41,531 $ - $ - $ 107,526 Total Commercial $ 1,304,099 $ 1,436,940 $ 532,943 $ 388,910 $ 237,316 $ 719,421 $ 371,713 $ 682 $ 4,992,024 Consumer Residential Mortgage Pass $ 1,120,627 $ 1,173,498 $ 403,404 $ 201,297 $ 285,312 $ 1,083,359 $ - $ - $ 4,267,497 Classified - - 294 - 2,281 2,468 - - 5,043 Total Residential Mortgage $ 1,120,627 $ 1,173,498 $ 403,698 $ 201,297 $ 287,593 $ 1,085,827 $ - $ - $ 4,272,540 Home Equity Pass $ - $ - $ - $ - $ - $ 3,282 $ 1,636,803 $ 34,308 $ 1,674,393 Classified - - - - - 113 4,920 803 5,836 Total Home Equity $ - $ - $ - $ - $ - $ 3,395 $ 1,641,723 $ 35,111 $ 1,680,229 Automobile Pass $ 233,401 $ 166,682 $ 155,905 $ 105,933 $ 40,967 $ 23,952 $ - $ - $ 726,840 Classified 26 53 87 55 17 156 - - 394 Total Automobile $ 233,427 $ 166,735 $ 155,992 $ 105,988 $ 40,984 $ 24,108 $ - $ - $ 727,234 Other 1 Pass $ 127,788 $ 54,794 $ 105,858 $ 55,663 $ 21,442 $ 6,949 $ 26,151 $ 1,485 $ 400,130 Classified - 93 244 95 78 10 70 3 593 Total Other $ 127,788 $ 54,887 $ 106,102 $ 55,758 $ 21,520 $ 6,959 $ 26,221 $ 1,488 $ 400,723 Total Consumer $ 1,481,842 $ 1,395,120 $ 665,792 $ 363,043 $ 350,097 $ 1,120,289 $ 1,667,944 $ 36,599 $ 7,080,726 Total Loans and Leases $ 2,785,941 $ 2,832,060 $ 1,198,735 $ 751,953 $ 587,413 $ 1,839,710 $ 2,039,657 $ 37,281 $ 12,072,750 1 Comprised of other revolving credit, installment, and lease financing. The following presents by credit quality indicator, loan class, and year of origination, the amortized cost basis of the Company’s loans and leases as of December 31, 2020. Term Loans by Origination Year (dollars in thousands) 2020 2019 2018 2017 2016 Prior Revolving Loans Revolving Loans Converted to Term Loans Total Loans and Leases December 31, 2020 Commercial Commercial and Industrial Pass $ 426,780 $ 149,024 $ 149,468 $ 49,385 $ 52,354 $ 68,269 $ 342,339 $ 847 $ 1,238,466 Special Mention 11,702 42 - - 110 95 32,319 52 44,320 Classified 32,208 1,734 2,266 777 19 19,166 18,529 125 74,824 Total Commercial and Industrial $ 470,690 $ 150,800 $ 151,734 $ 50,162 $ 52,483 $ 87,530 $ 393,187 $ 1,024 $ 1,357,610 PPP Pass $ 517,683 $ - $ - $ - $ - $ - $ - $ - $ 517,683 Total PPP $ 517,683 $ - $ - $ - $ - $ - $ - $ - $ 517,683 Commercial Mortgage Pass $ 847,676 $ 458,472 $ 350,363 $ 245,157 $ 267,860 $ 425,157 $ 76,869 $ - $ 2,671,554 Special Mention 66,523 28,418 291 7,117 8,665 5,035 - - 116,049 Classified 49,640 655 2,783 274 4,742 9,132 - - 67,226 Total Commercial Mortgage $ 963,839 $ 487,545 $ 353,437 $ 252,548 $ 281,267 $ 439,324 $ 76,869 $ - $ 2,854,829 Construction Pass $ 106,508 $ 105,731 $ 11,275 $ 8,133 $ - $ - $ 28,151 $ - $ 259,798 Total Construction $ 106,508 $ 105,731 $ 11,275 $ 8,133 $ - $ - $ 28,151 $ - $ 259,798 Lease Financing Pass $ 19,906 $ 20,132 $ 13,785 $ 4,202 $ 9,657 $ 41,755 $ - $ - $ 109,437 Classified 33 67 1,092 42 95 - - - 1,329 Total Lease Financing $ 19,939 $ 20,199 $ 14,877 $ 4,244 $ 9,752 $ 41,755 $ - $ - $ 110,766 Total Commercial $ 2,078,659 $ 764,275 $ 531,323 $ 315,087 $ 343,502 $ 568,609 $ 498,207 $ 1,024 $ 5,100,686 Consumer Residential Mortgage Pass $ 1,300,831 $ 576,452 $ 295,522 $ 454,165 $ 545,798 $ 954,120 $ - $ - $ 4,126,888 Classified - 294 - 1,032 - 2,299 - - 3,625 Total Residential Mortgage $ 1,300,831 $ 576,746 $ 295,522 $ 455,197 $ 545,798 $ 956,419 $ - $ - $ 4,130,513 Home Equity Pass $ - $ - $ - $ - $ - $ 4,449 $ 1,556,671 $ 37,559 $ 1,598,679 Classified - - - - - 88 4,693 1,078 5,859 Total Home Equity $ - $ - $ - $ - $ - $ 4,537 $ 1,561,364 $ 38,637 $ 1,604,538 Automobile Pass $ 219,218 $ 213,914 $ 158,216 $ 68,776 $ 33,899 $ 13,850 $ - $ - $ 707,873 Classified 101 245 171 113 161 136 - - 927 Total Automobile $ 219,319 $ 214,159 $ 158,387 $ 68,889 $ 34,060 $ 13,986 $ - $ - $ 708,800 Other 1 Pass $ 71,042 $ 145,549 $ 92,993 $ 39,770 $ 9,225 $ 2,189 $ 32,070 $ 1,485 $ 394,323 Classified 51 419 375 167 42 21 85 - 1,160 Total Other $ 71,093 $ 145,968 $ 93,368 $ 39,937 $ 9,267 $ 2,210 $ 32,155 $ 1,485 $ 395,483 Total Consumer $ 1,591,243 $ 936,873 $ 547,277 $ 564,023 $ 589,125 $ 977,152 $ 1,593,519 $ 40,122 $ 6,839,334 Total Loans and Leases $ 3,669,902 $ 1,701,148 $ 1,078,600 $ 879,110 $ 932,627 $ 1,545,761 $ 2,091,726 $ 41,146 $ 11,940,020 1
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 September 30, 2021, and December 31, 2020. (dollars in thousands) 30 - 59 Days Past Due 60 - 89 Days Past Due Past Due 90 Days or More Non- Accrual Total Past Due and Non- Accrual Current Total Loans and Leases Non- Accrual Loans and Leases that are Current 2 As of September 30, 2021 Commercial Commercial and Industrial $ 130 $ 1,887 $ — $ 209 $ 2,226 $ 1,323,220 $ 1,325,446 $ 172 PPP — — — — — 268,480 268,480 — Commercial Mortgage — — — 8,309 8,309 2,986,211 2,994,520 8,309 Construction — — — — — 296,052 296,052 — Lease Financing — — — — — 107,526 107,526 — Total Commercial 130 1,887 — 8,518 10,535 4,981,489 4,992,024 8,481 Consumer Residential Mortgage 1,074 3,253 4,776 4,348 13,451 4,259,089 4,272,540 528 Home Equity 2,219 689 2,946 5,422 11,276 1,668,953 1,680,229 1,234 Automobile 6,427 1,110 395 — 7,932 719,302 727,234 — Other 1 2,067 743 593 — 3,403 397,320 400,723 — Total Consumer 11,787 5,795 8,710 9,770 36,062 7,044,664 7,080,726 1,762 Total $ 11,917 $ 7,682 $ 8,710 $ 18,288 $ 46,597 $ 12,026,153 $ 12,072,750 $ 10,243 As of December 31, 2020 Commercial Commercial and Industrial $ 191 $ 59 $ — $ 441 $ 691 $ 1,356,919 $ 1,357,610 $ 285 PPP — — — — — 517,683 517,683 — Commercial Mortgage — — — 8,527 8,527 2,846,302 2,854,829 4,983 Construction — — — — — 259,798 259,798 — Lease Financing — — — — — 110,766 110,766 — Total Commercial 191 59 — 8,968 9,218 5,091,468 5,100,686 5,268 Consumer Residential Mortgage 4,049 2,083 5,274 3,223 14,629 4,115,884 4,130,513 2,100 Home Equity 3,423 3,378 3,187 3,958 13,946 1,590,592 1,604,538 987 Automobile 6,358 2,215 925 — 9,498 699,302 708,800 — Other 1 2,556 1,612 1,160 — 5,328 390,155 395,483 — Total Consumer 16,386 9,288 10,546 7,181 43,401 6,795,933 6,839,334 3,087 Total $ 16,577 $ 9,347 $ 10,546 $ 16,149 $ 52,619 $ 11,887,401 $ 11,940,020 $ 8,355 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 Non-Accrual Loans and Leases	The following presents the non-accrual loans and leases as of September 30, 2021, and December 31, 2020. September 30, 2021 December 31, 2020 (dollars in thousands) Non-accrual loans with a related ACL Non-accrual loans without a related ACL Total Non- accrual loans Non-accrual loans with a related ACL Non-accrual loans without a related ACL Total Non- accrual loans Commercial Commercial and Industrial $ 209 $ — $ 209 $ 441 $ — $ 441 Commercial Mortgage 4,765 3,544 8,309 8,527 — 8,527 Total Commercial 4,974 3,544 8,518 8,968 — 8,968 Consumer Residential Mortgage 3,989 359 4,348 3,096 127 3,223 Home Equity 5,422 — 5,422 3,958 — 3,958 Total Consumer 9,411 359 9,770 7,054 127 7,181 Total $ 14,385 $ 3,903 $ 18,288 $ 16,022 $ 127 $ 16,149
Schedule of Loans Modified in TDR and TDRs that Defaulted During the Period Within 12 months of Modification Date	The following presents by class, information related to loans modified in a TDR during the three and nine months ended September 30, 2021, and September 30, 2020. Loans Modified as a TDR for the Three Months Ended September 30, 2021 Loans Modified as a TDR for the Three Months Ended September 30, 2020 Recorded Increase in Recorded Increase in Troubled Debt Restructurings Investment Allowance Investment Allowance (dollars in thousands) Number of Contracts (as of period end) 1 (as of period end) Number of Contracts (as of period end) 1 (as of period end) Commercial Commercial and Industrial 2 $ 153 $ 2 — $ — $ — Construction — — — 1 92 1 Total Commercial 2 153 2 1 92 1 Consumer Residential Mortgage 2 796 21 — — — Home Equity 2 779 46 2 134 — Automobile 71 1,632 22 12 227 4 Other 2 51 439 16 7 93 4 Total Consumer 126 3,646 105 21 454 8 Total 128 $ 3,799 $ 107 22 $ 546 $ 9 1 The period end balances reflect all paydowns and charge-offs since the modification date. TDRs fully paid-off, charged-off, or foreclosed upon by period end are not included. 2 Comprised of other revolving credit and installment financing. Loans Modified as a TDR for the Nine Months Ended September 30, 2021 Loans Modified as a TDR for the Nine Months Ended September 30, 2020 Recorded Increase in Recorded Increase in Troubled Debt Restructurings Investment Allowance Investment Allowance (dollars in thousands) Number of Contracts (as of period end) 1 (as of period end) Number of Contracts (as of period end) 1 (as of period end) Commercial Commercial and Industrial 7 $ 258 $ 4 3 $ 188 $ 3 Construction — — — 1 1,099 — Total Commercial 7 258 4 4 1,287 3 Consumer Residential Mortgage 14 5,785 584 — — — Home Equity 9 1,488 80 2 134 — Automobile 331 6,902 95 81 1,346 22 Other 2 144 1,321 48 42 357 15 Total Consumer 498 15,496 807 125 1,837 37 Total 505 $ 15,754 $ 811 129 $ 3,124 $ 40 1 2 Comprised of other revolving credit and installment financing. The following presents by class, all loans modified in a TDR that defaulted during the three and nine months ended September 30, 2021, and September 30, 2020, and within twelve months of their modification date. A TDR is considered to be in default once it becomes 60 days or more past due following a modification. Three Months Ended September 30, 2021 Three Months Ended September 30, 2020 TDRs that Defaulted During the Period, Recorded Recorded Within Twelve Months of their Modification Date Number of Investment Number of Investment (dollars in thousands) Contracts (as of period end) 1 Contracts (as of period end) 1 Consumer Automobile 8 $ 157 1 $ 6 Other 2 5 27 0 0 Total Consumer 13 184 1 6 Total 13 $ 184 1 $ 6 Nine Months Ended September 30, 2021 Nine Months Ended September 30, 2020 TDRs that Defaulted During the Period, Recorded Recorded Within Twelve Months of their Modification Date Number of Investment Number of Investment (dollars in thousands) Contracts (as of period end) 1 Contracts (as of period end) 1 Consumer Residential Mortgage 1 $ 528 — $ — Automobile 12 213 33 591 Other 2 12 112 6 38 Total Consumer 25 853 39 629 Total 25 $ 853 39 $ 629 1 The period end balances reflect all paydowns and charge-offs since the modification date. TDRs fully paid-off, charged-off, or foreclosed upon by period end are not included. 2 Comprised of other revolving credit and installment financing.

Mortgage Servicing Rights (Tabl

Mortgage Servicing Rights (Tables)	9 Months Ended
	Sep. 30, 2021
Transfers And Servicing Of Financial Assets [Abstract]
Summary of Carrying Value Under the Fair Value Measurement Method	For the three and nine months ended September 30, 2021, and September 30, 2020, the change in the carrying value of the Company’s mortgage servicing rights accounted for under the fair value measurement method was as follows: Three Months Ended September 30, Nine Months Ended September 30, (dollars in thousands) 2021 2020 2021 2020 Balance at Beginning of Period $ 875 $ 1,068 $ 958 $ 1,126 Change in Fair Value Due to Payoffs: (49 ) (50 ) (132 ) (108 ) Balance at End of Period $ 826 $ 1,018 $ 826 $ 1,018
Summary of Carrying Value Under the Amortization Method	For the three and nine months ended September 30, 2021, and September 30, 2020, the change in the carrying value of the Company’s mortgage servicing rights accounted for under the amortization method was as follows: Three Months Ended September 30, Nine Months Ended September 30, (dollars in thousands) 2021 2020 2021 2020 Balance at Beginning of Period $ 20,598 $ 21,836 $ 18,694 $ 23,896 Servicing Rights that Resulted From Asset Transfers 1,082 872 4,022 3,042 Amortization (1,069 ) (1,271 ) (3,228 ) (3,684 ) Valuation Allowance Recovery (Provision) 662 (568 ) 1,785 (2,385 ) Balance at End of Period $ 21,273 $ 20,869 $ 21,273 $ 20,869 Valuation Allowance: Balance at Beginning of Period $ (2,769 ) $ (1,817 ) $ (3,892 ) $ — Valuation Allowance Recovery (Provision) 662 (568 ) 1,785 (2,385 ) Balance at End of Period $ (2,107 ) $ (2,385 ) $ (2,107 ) $ (2,385 ) Fair Value of Mortgage Servicing Rights Accounted for Under the Amortization Method Beginning of Period $ 20,598 $ 21,836 $ 18,694 $ 25,714 End of Period $ 21,273 $ 20,870 $ 21,273 $ 20,870
Schedule of Key Data and Assumptions Used in Estimating the Fair Value	The key data and assumptions used in estimating the fair value of the Company’s mortgage servicing rights as of September 30, 2021, and December 31, 2020, were as follows: September 30, 2021 December 31, 2020 Weighted-Average Constant Prepayment Rate 1 11.50 % 14.42 % Weighted-Average Life (in years) 6.00 4.99 Weighted-Average Note Rate 3.67 % 3.87 % Weighted-Average Discount Rate 2 6.67 % 5.81 % 1 Represents annualized loan prepayment rate assumption. 2 Derived from multiple interest rate scenarios that incorporate a spread to a market yield curve and market volatilities.
Schedule of Sensitivity Analysis of the Fair Value	A sensitivity analysis of the Company’s fair value of mortgage servicing rights to changes in certain key assumptions as of September 30, 2021, and December 31, 2020, is presented in the following table. (dollars in thousands) September 30, 2021 December 31, 2020 Constant Prepayment Rate Decrease in fair value from 25 basis points (“bps”) adverse change $ (246 ) $ (203 ) Decrease in fair value from 50 bps adverse change (487 ) (401 ) Discount Rate Decrease in fair value from 25 bps adverse change (223 ) (184 ) Decrease in fair value from 50 bps adverse change (441 ) (365 )

Affordable Housing Projects T_2

Affordable Housing Projects Tax Credit Partnerships (Tables)	9 Months Ended
	Sep. 30, 2021
Equity Method Investments And Joint Ventures [Abstract]
Expected Payments for Unfunded Affordable Housing Commitments	As of September 30, 2021, the expected payments for unfunded affordable housing commitments were as follows: (dollars in thousands) Amount 2021 $ 12,710 2022 6,757 2023 19,025 2024 173 2025 56 Thereafter 3,424 Total Unfunded Commitments $ 42,145
Schedule of Tax Credits and Other Tax Benefits Recognized and Amortization Expense Related to Affordable Housing	The following table presents tax credits and other tax benefits recognized and amortization expense related to affordable housing for the three and nine months ended September 30, 2021, and September 30, 2020. Three Months Ended September 30, Nine Months Ended September 30, (dollars in thousands) 2021 2020 2021 2020 Effective Yield Method Tax credits and other tax benefits recognized $ 2,151 $ 2,938 $ 6,453 $ 8,814 Amortization Expense in Provision for Income Taxes 1,670 2,347 5,032 7,042 Proportional Amortization Method Tax credits and other tax benefits recognized $ 2,708 $ 1,794 $ 8,178 $ 4,839 Amortization Expense in Provision for Income Taxes 2,332 1,345 7,043 3,580

Balance Sheet Offsetting (Table

Balance Sheet Offsetting (Tables)	9 Months Ended
	Sep. 30, 2021
Offsetting [Abstract]
Fair Value of the Related Collateral Pledged Against Repurchase Agreements	The following table presents the fair value of the related collateral pledged against repurchase agreements as of September 30, 2021, and December 31, 2020. Remaining Contractual Maturity of Repurchase Agreements (dollars in thousands) Up to 90 days 91-365 days 1-3 Years After 3 Years Total September 30, 2021 Class of Collateral Pledged: Debt Securities Issued by States and Political Subdivisions $ — $ — $ — $ 490 $ 490 Mortgage-Backed Securities: Residential - Government Agencies — — 43,461 13,602 57,063 Residential - U.S. Government-Sponsored Enterprises — — 231,539 161,398 392,937 Total $ — $ — $ 275,000 $ 175,490 $ 450,490 December 31, 2020 Class of Collateral Pledged: Debt Securities Issued by States and Political Subdivisions $ 100 $ — $ — $ 490 $ 590 Mortgage-Backed Securities: 1 Residential - Government Agencies — — 20,210 83,599 103,809 Residential - U.S. Government-Sponsored Enterprises — — 4,790 491,401 496,191 Total $ 100 $ — $ 25,000 $ 575,490 $ 600,590 1
Schedule of Assets and Liabilities Subject to an Enforceable Master Netting Arrangement or Repurchase Agreements	The following table presents the assets and liabilities subject to an enforceable master netting arrangement, or repurchase agreements as of September 30, 2021, and December 31, 2020. The swap agreements the Company has with our commercial banking customers are not subject to an enforceable master netting arrangement, and therefore, are excluded from this table. Centrally cleared swap agreements between the Company and institutional counterparties are also excluded from this table. See Note 11 Derivative Financial Instruments (i) (ii) (iii) = (i)-(ii) (iv) (v) = (iii)-(iv) Gross Amounts Not Offset in the Statements of Condition (dollars in thousands) Gross Amounts Recognized in the Statements of Condition Gross Amounts Offset in the Statements of Condition Net Amounts Presented in the Statements of Condition Netting Adjustments per Master Netting Arrangements Fair Value of Collateral Pledged/ Received 1 Net Amount September 30, 2021 Assets: Interest Rate Swap Agreements: Institutional Counterparties $ 22 $ — $ 22 $ 22 $ — $ — Liabilities: Interest Rate Swap Agreements: Institutional Counterparties $ 8,297 $ — $ 8,297 $ 22 $ 53,265 $ (44,990 ) Repurchase Agreements: Private Institutions 450,000 — 450,000 — 450,000 — Government Entities 490 — 490 — 490 — $ 450,490 $ — $ 450,490 $ — $ 450,490 $ — December 31, 2020 Assets: Interest Rate Swap Agreements: Institutional Counterparties $ 5 $ — $ 5 $ 5 $ — $ — Liabilities: Interest Rate Swap Agreements: Institutional Counterparties 17,202 — 17,202 5 7,911 9,286 Repurchase Agreements: Private Institutions 600,000 — 600,000 — 600,000 — Government Entities 590 — 590 — 590 — $ 600,590 $ — $ 600,590 $ — $ 600,590 $ — 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 investment securities pledged was $538.1 million and $635.2 million as of September 30, 2021, and December 31, 2020, respectively. For repurchase agreements with government entities, the fair value of investment securities pledged was $1.5 million and $2.5 million as of September 30, 2021, and December 31, 2020, respectively.

Accumulated Other Comprehensi_2

Accumulated Other Comprehensive Income (Loss) (Tables)	9 Months Ended
	Sep. 30, 2021
Comprehensive Income Net Of Tax [Abstract]
Components of Other Comprehensive Income	The following table presents the components of other comprehensive income (loss) for the three and nine months ended September 30, 2021, and September 30, 2020: (dollars in thousands) Before Tax Tax Effect Net of Tax Three Months Ended September 30, 2021 Net Unrealized Gains (Losses) on Investment Securities: Net Unrealized Gains (Losses) Arising During the Period $ (10,263 ) $ (2,719 ) $ (7,544 ) Amounts Reclassified from Accumulated Other Comprehensive Income (Loss) that (Increase) Decrease Net Income: (Gain) Loss on Sale (83 ) (22 ) (61 ) Amortization of Unrealized Holding (Gains) Losses on Held-to- Maturity Securities 1 87 23 64 Net Unrealized Gains (Losses) on Investment Securities (10,259 ) (2,718 ) (7,541 ) Defined Benefit Plans: Amortization of Net Actuarial Losses (Gains) 662 175 487 Amortization of Prior Service Credit (62 ) (16 ) (46 ) Defined Benefit Plans, Net 600 159 441 Other Comprehensive Income (Loss) $ (9,659 ) $ (2,559 ) $ (7,100 ) Three Months Ended September 30, 2020 Net Unrealized Gains (Losses) on Investment Securities: Net Unrealized Gains (Losses) Arising During the Period $ (6,771 ) $ (1,795 ) $ (4,976 ) Amounts Reclassified from Accumulated Other Comprehensive Income (Loss) that (Increase) Decrease Net Income: Amortization of Unrealized Holding (Gains) Losses on Held-to- Maturity Securities 1 103 27 76 Net Unrealized Gains (Losses) on Investment Securities (6,668 ) (1,768 ) (4,900 ) Defined Benefit Plans: Amortization of Net Actuarial Losses (Gains) 570 151 419 Amortization of Prior Service Credit (61 ) (16 ) (45 ) Defined Benefit Plans, Net 509 135 374 Other Comprehensive Income (Loss) $ (6,159 ) $ (1,633 ) $ (4,526 ) Nine Months Ended September 30, 2021 Net Unrealized Gains (Losses) on Investment Securities: Net Unrealized Gains (Losses) Arising During the Period $ (75,360 ) $ (19,954 ) $ (55,406 ) Amounts Reclassified from Accumulated Other Comprehensive Income (Loss) that (Increase) Decrease Net Income: (Gain) Loss on Sale (3,758 ) (1,014 ) (2,744 ) Amortization of Unrealized Holding (Gains) Losses on Held-to- Maturity Securities 1 593 157 436 Net Unrealized Gains (Losses) on Investment Securities (78,525 ) (20,811 ) (57,714 ) Defined Benefit Plans: Amortization of Net Actuarial Losses (Gains) 1,985 525 1,460 Amortization of Prior Service Credit (185 ) (49 ) (136 ) Defined Benefit Plans, Net 1,800 476 1,324 Other Comprehensive Income (Loss) $ (76,725 ) $ (20,335 ) $ (56,390 ) Nine Months Ended September 30, 2020 Net Unrealized Gains (Losses) on Investment Securities: Net Unrealized Gains (Losses) Arising During the Period $ 60,177 $ 15,945 $ 44,232 Amounts Reclassified from Accumulated Other Comprehensive Income (Loss) that (Increase) Decrease Net Income: (Gain) Loss on Sale (77 ) (21 ) (56 ) Amortization of Unrealized Holding (Gains) Losses on Held-to- Maturity Securities 1 289 76 213 Net Unrealized Gains (Losses) on Investment Securities 60,389 16,000 44,389 Defined Benefit Plans: Amortization of Net Actuarial Losses (Gains) 1,711 454 1,257 Amortization of Prior Service Credit (184 ) (49 ) (135 ) Defined Benefit Plans, Net 1,527 405 1,122 Other Comprehensive Income (Loss) $ 61,916 $ 16,405 $ 45,511 1 The amount relates to the amortization/accretion of unrealized net gains and losses related to the Company’s reclassification of available-for-sale investment securities to the held-to-maturity category. The unrealized net gains/losses will be amortized/accreted over the remaining life of the investment securities as an adjustment of yield.
Schedule of Accumulated Other Comprehensive Income (Loss)	The following table presents the changes in each component of accumulated other comprehensive income (loss), net of tax, for the three and nine months ended September 30, 2021, and September 30, 2020: (dollars in thousands) Investment Securities- Available- for-Sale Investment Securities- Held-to-Maturity Defined Benefit Plans Accumulated Other Comprehensive Income (Loss) Three Months Ended September 30, 2021 Balance at Beginning of Period $ 950 $ (51 ) $ (42,367 ) $ (41,468 ) Other Comprehensive Income (Loss) Before Reclassifications (7,544 ) — — (7,544 ) Amounts Reclassified from Accumulated Other Comprehensive Income (Loss) (61 ) 64 441 444 Total Other Comprehensive Income (Loss) (7,605 ) 64 441 (7,100 ) Balance at End of Period $ (6,655 ) $ 13 $ (41,926 ) $ (48,568 ) Three Months Ended September 30, 2020 Balance at Beginning of Period $ 57,511 $ (578 ) $ (38,008 ) $ 18,925 Other Comprehensive Income (Loss) Before Reclassifications (4,976 ) — — (4,976 ) Amounts Reclassified from Accumulated Other Comprehensive Income (Loss) — 76 374 450 Total Other Comprehensive Income (Loss) (4,976 ) 76 374 (4,526 ) Balance at End of Period $ 52,535 $ (502 ) $ (37,634 ) $ 14,399 Nine Months Ended September 30, 2021 Balance at Beginning of Period $ 51,495 $ (423 ) $ (43,250 ) $ 7,822 Other Comprehensive Income (Loss) Before Reclassifications (55,406 ) — — (55,406 ) Amounts Reclassified from Accumulated Other Comprehensive Income (Loss) (2,744 ) 436 1,324 (984 ) Total Other Comprehensive Income (Loss) (58,150 ) 436 1,324 (56,390 ) Balance at End of Period $ (6,655 ) $ 13 $ (41,926 ) $ (48,568 ) Nine Months Ended September 30, 2020 Balance at Beginning of Period $ 8,359 $ (715 ) $ (38,756 ) $ (31,112 ) Other Comprehensive Income (Loss) Before Reclassifications 44,232 — — 44,232 Amounts Reclassified from Accumulated Other Comprehensive Income (Loss) (56 ) 213 1,122 1,279 Total Other Comprehensive Income (Loss) 44,176 213 1,122 45,511 Balance at End of Period $ 52,535 $ (502 ) $ (37,634 ) $ 14,399
Reclassification out of Accumulated Other Comprehensive Income	The following table presents the amounts reclassified out of each component of accumulated other comprehensive income (loss) for the three and nine months ended September 30, 2021, and September 30, 2020: Details about Accumulated Other Comprehensive Income (Loss) Components Amount Reclassified from Accumulated Other Comprehensive Income (Loss) 1 Affected Line Item in the Statement Where Net Income Is Presented Three Months Ended September 30, (dollars in thousands) 2021 2020 Amortization of Unrealized Holding Gains (Losses) on Investment Securities Held-to-Maturity $ (87 ) $ (103 ) Interest Income 23 27 Provision for Income Tax (64 ) (76 ) Net of Tax Sale of Investment Securities Available-for-Sale 83 — Investment Securities Gains (Losses), Net (22 ) — Provision for Income Tax 61 — Net of tax Amortization of Defined Benefit Plan Items Prior Service Credit 2 62 62 Net Actuarial Losses 2 (662 ) (571 ) (600 ) (509 ) Total Before Tax 159 135 Provision for Income Tax (441 ) (374 ) Net of Tax Total Reclassifications for the Period $ (444 ) $ (450 ) Net of Tax Details about Accumulated Other Comprehensive Income (Loss) Components Amount Reclassified from Accumulated Other Comprehensive Income (Loss) 1 Affected Line Item in the Statement Where Net Income Is Presented Nine Months Ended September 30, (dollars in thousands) 2021 2020 Amortization of Unrealized Holding Gains (Losses) on Investment Securities Held-to-Maturity $ (593 ) $ (289 ) Interest Income 157 76 Provision for Income Tax (436 ) (213 ) Net of Tax Sale of Investment Securities Available-for-Sale 3,758 77 Investment Securities Gains (Losses), Net (1,014 ) (21 ) Provision for Income Tax 2,744 56 Net of tax Amortization of Defined Benefit Plan Items Prior Service Credit 2 185 185 Net Actuarial Losses 2 (1,985 ) (1,712 ) (1,800 ) (1,527 ) Total Before Tax 476 405 Provision for Income Tax (1,324 ) (1,122 ) Net of Tax Total Reclassifications for the Period $ 984 $ (1,279 ) Net of Tax 1 2

Earnings Per Common Share (Tabl

Earnings Per Common Share (Tables)	9 Months Ended
	Sep. 30, 2021
Earnings Per Share [Abstract]
Schedule of Reconciliation of Weighted Average Number of Common Shares Used in the Calculation of Basic and Diluted Earnings Per Common Share and Antidilutive Stock Options and Restricted Stock Outstanding	Earnings per common share is computed using the two-class method. The following is a reconciliation of the weighted average number of common shares and antidilutive stock options and restricted stock outstanding for the three and nine months ended September 30, 2021, and September 30, 2020: Three Months Ended September 30, Nine Months Ended September 30, (dollars in thousands, except shares and per share amounts) 2021 2020 2021 2020 Numerator: Net Income Available to Common Shareholders $ 61,047 $ 37,840 $ 188,529 $ 111,490 Denominator: Weighted Average Common Shares Outstanding - Basic 39,881,437 39,745,120 39,870,450 39,710,252 Dilutive Effect of Equity Based Awards 199,482 124,015 218,449 162,154 Weighted Average Common Shares Outstanding - Diluted 40,080,919 39,869,135 40,088,899 39,872,406 Earnings Per Common Share: Basic $ 1.53 $ 0.95 $ 4.73 $ 2.81 Diluted $ 1.52 $ 0.95 $ 4.70 $ 2.80 Antidilutive Stock Options and Restricted Stock Outstanding 47,087 108,207 44,217 106,140

Business Segments (Tables)

Business Segments (Tables)	9 Months Ended
	Sep. 30, 2021
Segment Reporting [Abstract]
Selected Business Segment Financial Information	Selected business segment financial information as of and for the three and nine months ended September 30, 2021, and September 30, 2020, were as follows: (dollars in thousands) Consumer Banking Commercial Banking Treasury and Other Consolidated Total Three Months Ended September 30, 2021 Net Interest Income $ 72,062 $ 50,088 $ 4,669 $ 126,819 Provision for Credit Losses 1,235 (42 ) (11,593 ) (10,400 ) Net Interest Income After Provision for Credit Losses 70,827 50,130 16,262 137,219 Noninterest Income 32,046 7,906 1,426 41,378 Noninterest Expense (71,377 ) (15,924 ) (9,218 ) (96,519 ) Income Before Provision for Income Taxes 31,496 42,112 8,470 82,078 Provision for Income Taxes (8,001 ) (10,373 ) (1,651 ) (20,025 ) Net Income $ 23,495 $ 31,739 $ 6,819 $ 62,053 Total Assets as of September 30, 2021 $ 7,530,513 $ 5,087,831 $ 10,347,039 $ 22,965,383 Three Months Ended September 30, 2020 Net Interest Income $ 73,868 $ 47,797 $ 2,501 $ 124,166 Provision for Credit Losses (1,372 ) (85 ) 30,057 28,600 Net Interest Income (Loss) After Provision for Credit Losses 75,240 47,882 (27,556 ) 95,566 Noninterest Income 31,776 7,672 2,286 41,734 Noninterest Expense (69,408 ) (15,430 ) (5,111 ) (89,949 ) Income (Loss) Before Provision for Income Taxes 37,608 40,124 (30,381 ) 47,351 Provision for Income Taxes (9,627 ) (9,784 ) 9,900 (9,511 ) Net Income (Loss) $ 27,981 $ 30,340 $ (20,481 ) $ 37,840 Total Assets as of September 30, 2020 $ 7,383,822 $ 5,027,836 $ 7,697,831 $ 20,109,489 Nine Months Ended September 30, 2021 Net Interest Income $ 212,991 $ 146,269 $ 11,642 $ 370,902 Provision for Credit Losses 5,088 205 (46,093 ) (40,800 ) Net Interest Income After Provision for Credit Losses 207,903 146,064 57,735 411,702 Noninterest Income 98,344 22,339 8,096 128,779 Noninterest Expense (222,426 ) (47,343 ) (22,142 ) (291,911 ) Income Before Provision for Income Taxes 83,821 121,060 43,689 248,570 Provision for Income Taxes (20,840 ) (29,634 ) (8,561 ) (59,035 ) Net Income $ 62,981 $ 91,426 $ 35,128 $ 189,535 Total Assets as of September 30, 2021 $ 7,530,513 $ 5,087,831 $ 10,347,039 $ 22,965,383 Nine Months Ended September 30, 2020 Net Interest Income $ 221,003 $ 144,253 $ 11,567 $ 376,823 Provision for Credit Losses 8,215 (819 ) 95,204 102,600 Net Interest Income (Loss) After Provision for Credit Losses 212,788 145,072 (83,637 ) 274,223 Noninterest Income 93,309 26,483 19,359 139,151 Noninterest Expense (210,744 ) (47,552 ) (16,857 ) (275,153 ) Income (Loss) Before Provision for Income Taxes 95,353 124,003 (81,135 ) 138,221 Provision for Income Taxes (24,235 ) (30,278 ) 27,782 (26,731 ) Net Income (Loss) $ 71,118 $ 93,725 $ (53,353 ) $ 111,490 Total Assets as of September 30, 2020 $ 7,383,822 $ 5,027,836 $ 7,697,831 $ 20,109,489

Derivative Financial Instrume_2

Derivative Financial Instruments (Tables)	9 Months Ended
	Sep. 30, 2021
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 September 30, 2021, and December 31, 2020, were as follows: September 30, 2021 December 31, 2020 (dollars in thousands) Notional Amount Fair Value Notional Amount Fair Value Interest Rate Lock Commitments $ 48,993 $ 1,222 $ 102,881 $ 4,947 Forward Commitments 60,163 213 158,759 (740 ) Interest Rate Swap Agreements Receive Fixed/Pay Variable Swaps 1,440,485 38,162 1,362,778 90,130 Pay Fixed/Receive Variable Swaps 1,440,485 (8,275 ) 1,362,778 (17,197 ) Foreign Exchange Contracts 97,172 (645 ) 90,587 866 Conversion Rate Swap Agreement 135,735 — 133,286 —
Derivative Financial Instruments, their Fair Values, and Balance Sheet Location	The following table presents the Company’s derivative financial instruments, their fair values, and their location in the consolidated statements of condition as of September 30, 2021, and December 31, 2020: Derivative Financial Instruments September 30, 2021 December 31, 2020 Not Designated as Hedging Instruments 1 Asset Liability Asset Liability (dollars in thousands) Derivatives Derivatives Derivatives Derivatives Interest Rate Lock Commitments $ 1,222 $ — $ 4,947 $ — Forward Commitments 227 14 — 740 Interest Rate Swap Agreements 47,211 17,324 90,342 17,409 Foreign Exchange Contracts 61 706 878 12 Total $ 48,721 $ 18,044 $ 96,167 $ 18,161 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 three and nine months ended September 30, 2021, and September 30, 2020: Location of Derivative Financial Instruments Net Gains (Losses) Three Months Ended Nine Months Ended Not Designated as Hedging Instruments Recognized in the September 30, September 30, (dollars in thousands) Statements of Income 2021 2020 2021 2020 Interest Rate Lock Commitments Mortgage Banking $ 2,083 $ 4,903 $ 6,927 $ 15,556 Forward Commitments Mortgage Banking (53 ) (595 ) 1,598 (3,652 ) Interest Rate Swap Agreements Other Noninterest Income 2,147 2,575 4,848 12,041 Foreign Exchange Contracts Other Noninterest Income 401 467 1,120 1,403 Total $ 4,578 $ 7,350 $ 14,493 $ 25,348

Commitments, Contingencies, a_2

Commitments, Contingencies, and Guarantees (Tables)	9 Months Ended
	Sep. 30, 2021
Commitments And Contingencies Disclosure [Abstract]
Credit Commitments	The Company’s credit commitments as of September 30, 2021, and December 31, 2020, were as follows: (dollars in thousands) September 30, 2021 December 31, 2020 Unfunded Commitments to Extend Credit $ 2,973,153 $ 2,787,123 Standby Letters of Credit 125,932 100,186 Commercial Letters of Credit 16,715 10,511 Total Credit Commitments $ 3,115,800 $ 2,897,820

Fair Value of Assets and Liab_2

Fair Value of Assets and Liabilities (Tables)	9 Months Ended
	Sep. 30, 2021
Fair Value Disclosures [Abstract]
Balances of Assets and Liabilities Measured at Fair Value on Recurring Basis	The table below presents the balances of assets and liabilities measured at fair value on a recurring basis as of September 30, 2021, and December 31, 2020: Quoted Prices in Active Markets for Identical Assets or Liabilities Significant Other Observable Inputs Significant Unobservable Inputs (dollars in thousands) (Level 1) (Level 2) (Level 3) Total September 30, 2021 Assets: Investment Securities Available-for-Sale Debt Securities Issued by the U.S. Treasury and Government Agencies $ 751 $ 144,113 $ — $ 144,864 Debt Securities Issued by States and Political Subdivisions — 21,068 — 21,068 Debt Securities Issued by U.S. Government-Sponsored Enterprises — 1,555 — 1,555 Debt Securities Issued by Corporations — 387,874 — 387,874 Mortgage-Backed Securities: Residential - Government Agencies — 1,417,183 — 1,417,183 Residential - U.S. Government-Sponsored Enterprises — 2,200,052 — 2,200,052 Commercial - Government Agencies — 180,924 — 180,924 Total Mortgage-Backed Securities — 3,798,159 — 3,798,159 Total Investment Securities Available-for-Sale 751 4,352,769 — 4,353,520 Loans Held for Sale — 21,965 — 21,965 Mortgage Servicing Rights — — 826 826 Other Assets 55,167 — — 55,167 Derivatives 1 — 288 48,433 48,721 Total Assets Measured at Fair Value on a Recurring Basis as of September 30, 2021 $ 55,918 $ 4,375,022 $ 49,259 $ 4,480,199 Liabilities: Derivatives 1 $ — $ 720 $ 17,324 $ 18,044 Total Liabilities Measured at Fair Value on a Recurring Basis as of September 30, 2021 $ — $ 720 $ 17,324 $ 18,044 December 31, 2020 Assets: Investment Securities Available-for-Sale Debt Securities Issued by the U.S. Treasury and Government Agencies $ 921 $ 173,324 $ — $ 174,245 Debt Securities Issued by States and Political Subdivisions — 24,840 — 24,840 Debt Securities Issued by U.S. Government-Sponsored Enterprises — 1,062 — 1,062 Debt Securities Issued by Corporations — 224,605 — 224,605 Mortgage-Backed Securities: Residential - Government Agencies — 1,594,815 — 1,594,815 Residential - U.S. Government-Sponsored Enterprises — 1,518,283 — 1,518,283 Commercial - Government Agencies — 253,839 — 253,839 Total Mortgage-Backed Securities — 3,366,937 — 3,366,937 Total Investment Securities Available-for-Sale 921 3,790,768 — 3,791,689 Loans Held for Sale — 82,565 — 82,565 Mortgage Servicing Rights — — 958 958 Other Assets 53,410 — — 53,410 Derivatives 1 — 878 95,289 96,167 Total Assets Measured at Fair Value on a Recurring Basis as of December 31, 2020 $ 54,331 $ 3,874,211 $ 96,247 $ 4,024,789 Liabilities: Derivatives 1 $ — $ 752 $ 17,409 $ 18,161 Total Liabilities Measured at Fair Value on a Recurring Basis as of December 31, 2020 $ — $ 752 $ 17,409 $ 18,161 1 The fair value of each class of derivatives is shown in Note 11 Derivative Financial Instruments
Changes in Level 3 Assets and Liabilities Measured at Fair Value on Recurring Basis	For the three and nine months ended September 30, 2021, and September 30, 2020, the changes in Level 3 assets and liabilities measured at fair value on a recurring basis were as follows: (dollars in thousands) Mortgage Servicing Rights 1 Net Derivative Assets and Liabilities 2 Three Months Ended September 30, 2021 Balance as of July 1, 2021 $ 875 $ 37,957 Realized and Unrealized Net Gains (Losses): Included in Net Income (49 ) 2,095 Transfers to Loans Held for Sale — (3,068 ) Variation Margin Payments — (5,875 ) Balance as of September 30, 2021 $ 826 $ 31,109 Total Unrealized Net Gains (Losses) Included in Net Income Related to Assets Still Held as of September 30, 2021 $ — $ 31,109 Three Months Ended September 30, 2020 Balance as of July 1, 2020 $ 1,068 $ 88,995 Realized and Unrealized Net Gains (Losses): Included in Net Income (50 ) 4,909 Transfers to Loans Held for Sale — (4,242 ) Variation Margin Payments — (1,840 ) Balance as of September 30, 2020 $ 1,018 $ 87,822 Total Unrealized Net Gains (Losses) Included in Net Income Related to Assets Still Held as of September 30, 2020 $ — $ 87,822 Nine Months Ended September 30, 2021 Balance as of January 1, 2021 $ 958 77,880 Realized and Unrealized Net Gains (Losses): Included in Net Income (132 ) 7,008 Transfers to Loans Held for Sale — (10,652 ) Variation Margin Payments — (43,127 ) Balance as of September 30, 2021 $ 826 31,109 Total Unrealized Net Gains (Losses) Included in Net Income Related to Assets Still Held as of September 30, 2021 $ — $ 31,109 Nine Months Ended September 30, 2020 Balance as of January 1, 2020 $ 1,126 $ 22,573 Realized and Unrealized Net Gains (Losses): Included in Net Income (108 ) 15,372 Transfers to Loans Held for Sale — (13,521 ) Variation Margin Payments — 63,398 Balance as of September 30, 2020 $ 1,018 $ 87,822 Total Unrealized Net Gains (Losses) Included in Net Income Related to Assets Still Held as of September 30, 2020 $ — $ 87,822 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 September 30, 2021, and December 31, 2020, the significant unobservable inputs used in the fair value measurements were as follows: (dollars in thousands) Valuation Technique Description Range Weighted Average 1 Fair Value September 30, 2021 Mortgage Servicing Rights Discounted Cash Flow Constant Prepayment Rate 8.13 % - 14.43 % 11.50 % $ 22,099 Discount Rate 5.65 % - 6.74 % 6.67 % $ — Net Derivative Assets and Liabilities: Interest Rate Lock Commitments Pricing Model Closing Ratio 84.10 % - 100.00 % 92.84 % $ 1,222 Interest Rate Swap Agreements Discounted Cash Flow Credit Factor 0.00 % - 0.49 % 0.14 % $ 29,887 December 31, 2020 Mortgage Servicing Rights Discounted Cash Flow Constant Prepayment Rate 8.71 % - 15.89 % 14.42 % $ 19,652 Discount Rate 5.69 % - 6.28 % 5.81 % $ — Net Derivative Assets and Liabilities: Interest Rate Lock Commitments Pricing Model Closing Ratio 84.10 % - 99.00 % 90.76 % $ 4,947 Interest Rate Swap Agreements Discounted Cash Flow Credit Factor 0.00 % - 0.49 % 0.29 % $ 72,933 1 Unobservable inputs for mortgage servicing rights and interest rate lock commitments were weighted by loan amount. Unobservable inputs for interest rate swap agreements were weighted by fair value.
Schedule of Assets Measured at Fair Value on 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 September 30, 2021, and December 31, 2020. (dollars in thousands) Fair Value Hierarchy Net Carrying Amount Valuation Allowance September 30, 2021 Mortgage Servicing Rights - amortization method Level 3 $ 21,273 $ (2,107 ) December 31, 2020 Mortgage Servicing Rights - amortization method Level 3 $ 18,694 $ (3,892 )
Schedule of Difference between Aggregate Fair Value and Aggregate Unpaid Principal Balance	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 September 30, 2021, and December 31, 2020. (dollars in thousands) Aggregate Fair Value Aggregate Unpaid Principal Aggregate Fair Value Less Aggregate Unpaid Principal September 30, 2021 Loans Held for Sale $ 21,965 $ 21,376 $ 589 December 31, 2020 Loans Held for Sale $ 82,565 $ 78,577 $ 3,988
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 September 30, 2021, and December 31, 2020. This table excludes financial instruments for which the carrying amount approximates fair value. For short-term financial assets such as cash and cash equivalents, the carrying amount is a reasonable estimate of fair value due to the relatively short time between the origination of the instrument and its expected realization. For non-marketable equity securities such as Federal Home Loan Bank and Federal Reserve Bank stock, the carrying amount is a reasonable estimate of fair value as these securities can only be redeemed or sold at their par value and only to the respective issuing government supported institution or to another member institution. For financial liabilities such as noninterest-bearing demand, interest-bearing demand, and savings deposits, the carrying amount is a reasonable estimate of fair value due to these products having no stated maturity. Fair Value Measurements Carrying Quoted Prices in Active Markets for Identical Assets or Liabilities Significant Other Observable Inputs Significant Unobservable Inputs (dollars in thousands) Amount Fair Value (Level 1) (Level 2) (Level 3) September 30, 2021 Financial Instruments - Assets Investment Securities Held-to-Maturity $ 4,899,880 $ 4,895,763 $ 131,558 $ 4,764,205 $ — Loans 1 11,718,951 11,962,539 — — 11,962,539 Financial Instruments - Liabilities Time Deposits 1,072,915 1,074,210 — 1,074,210 — Securities Sold Under Agreements to Repurchase 450,490 477,228 — 477,228 — December 31, 2020 Financial Instruments - Assets Investment Securities Held-to-Maturity $ 3,262,727 $ 3,348,693 $ 7,500 $ 3,341,193 $ — Loans 1 11,536,011 12,019,151 — — 12,019,151 Financial Instruments - Liabilities Time Deposits 1,662,063 1,667,774 — 1,667,774 — Securities Sold Under Agreements to Repurchase 600,590 649,039 — 649,039 — Other Debt 2 50,000 51,546 — 51,546 — 1 Carrying amount is net of unearned income and the Allowance. 2 Excludes finance lease obligations.

Summary of Significant Accoun_3

Summary of Significant Accounting Policies - Additional Information (Details) - USD ($) $ / shares in Units, $ in Thousands	Oct. 05, 2021	Jun. 15, 2021	Sep. 30, 2021
Summary Of Significant Accounting Policies [Line Items]
Preferred Stock, par value (in dollars per share)			$ 0.01
Net proceeds, after underwriting discounts and expenses			$ 175,487
ASU No. 2019-12
Summary Of Significant Accounting Policies [Line Items]
Change in Accounting Principle, Accounting Standards Update, Adoption Date			Dec. 15, 2020
Change in Accounting Principle, Accounting Standards Update, Adopted [true false]			true
Change in Accounting Principle, Accounting Standards Update, Immaterial Effect [true false]			true
Depositary Shares
Summary Of Significant Accounting Policies [Line Items]
Preferred Stock Issued, Net (in shares)		7,200,000
Preferred stock, redemption price per share		$ 25
Depositary Shares | Subsequent Event
Summary Of Significant Accounting Policies [Line Items]
Cash dividend declared per share	$ 0.2735
4.375% Fixed Rate Non Cumulative Perpetual Preferred Stock
Summary Of Significant Accounting Policies [Line Items]
Percentage of ownership interest in share		0.025%
Series A Preferred Stock
Summary Of Significant Accounting Policies [Line Items]
Preferred Stock, par value (in dollars per share)		$ 0.01
Preferred stock, liquidation preference per share		$ 1,000
Net proceeds, after underwriting discounts and expenses		$ 175,500
Preferred stock, dividend rate, percentage per annum		4.375%
Preferred stock, voting rights			Holders of the Series A Preferred Stock will not have voting rights
Preferred stock, redemption price per share		$ 1,000
Preferred stock, redemption terms			The Company may redeem the Series A Preferred Stock at its option, (i) in whole or in part, from time to time, on any dividend payment date on or after August 1, 2026 or (ii) in whole but not in part, at any time within 90 days following a regulatory capital treatment event, in either case at a redemption price equal to $1,000 per share (equivalent to $25 per depositary share), plus any declared and unpaid dividends
Preferred Stock, redemption date		Aug. 1, 2026
Series A Preferred Stock | Subsequent Event
Summary Of Significant Accounting Policies [Line Items]
Cash dividend declared per share	$ 10.94
Dividends payable, date to be paid	Nov. 1, 2021
Dividends payable, date of record	Oct. 18, 2021

Cash and Cash Equivalents - Sch

Cash and Cash Equivalents - Schedule of Reconciliation of Cash and Cash Equivalents (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Cash And Cash Equivalents [Abstract]
Interest-Bearing Deposits in Other Banks	$ 2,188	$ 1,646
Funds Sold	422,063	333,022
Cash and Due From Banks	231,711	279,420
Total Cash and Cash Equivalents	$ 655,962	$ 614,088

Investment Securities - Schedul

Investment Securities - Schedule of Amortized Cost, Gross Unrealized Gains and Losses, and Fair Value of Investment Securities (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Available-for-Sale:
Available-for-Sale: Amortized Cost	$ 4,362,585	$ 3,721,636
Available-for-Sale: Gross Unrealized Gains	33,784	72,428
Available-for-Sale: Gross Unrealized Losses	(42,849)	(2,375)
Available-for-Sale: Fair Value	4,353,520	3,791,689
Held-to-Maturity:
Held-to-Maturity: Amortized Cost	4,899,880	3,262,727
Held-to-Maturity: Gross Unrealized Gains	42,808	86,494
Held-to-Maturity: Gross Unrealized Losses	(46,925)	(528)
Held-to-Maturity: Fair Value	4,895,763	3,348,693
Debt Securities Issued by the U.S. Treasury and Government Agencies
Available-for-Sale:
Available-for-Sale: Amortized Cost	143,409	174,409
Available-for-Sale: Gross Unrealized Gains	1,561	427
Available-for-Sale: Gross Unrealized Losses	(106)	(591)
Available-for-Sale: Fair Value	144,864	174,245
Held-to-Maturity:
Held-to-Maturity: Amortized Cost	131,465	7,500
Held-to-Maturity: Gross Unrealized Gains	277	8
Held-to-Maturity: Gross Unrealized Losses	(184)	(8)
Held-to-Maturity: Fair Value	131,558	7,500
Debt Securities Issued by States and Political Subdivisions
Available-for-Sale:
Available-for-Sale: Amortized Cost	20,231	23,540
Available-for-Sale: Gross Unrealized Gains	839	1,301
Available-for-Sale: Gross Unrealized Losses	(2)	(1)
Available-for-Sale: Fair Value	21,068	24,840
Held-to-Maturity:
Held-to-Maturity: Amortized Cost	33,254	33,763
Held-to-Maturity: Gross Unrealized Gains	125	741
Held-to-Maturity: Fair Value	33,379	34,504
Debt Securities Issued by Government-Sponsored Enterprises
Available-for-Sale:
Available-for-Sale: Amortized Cost	1,509	985
Available-for-Sale: Gross Unrealized Gains	47	77
Available-for-Sale: Gross Unrealized Losses	(1)	0
Available-for-Sale: Fair Value	1,555	1,062
Debt Securities Issued by Corporations
Available-for-Sale:
Available-for-Sale: Amortized Cost	385,787	220,717
Available-for-Sale: Gross Unrealized Gains	3,630	4,844
Available-for-Sale: Gross Unrealized Losses	(1,543)	(956)
Available-for-Sale: Fair Value	387,874	224,605
Held-to-Maturity:
Held-to-Maturity: Amortized Cost	21,133	12,031
Held-to-Maturity: Gross Unrealized Gains	140	251
Held-to-Maturity: Gross Unrealized Losses	(271)
Held-to-Maturity: Fair Value	21,002	12,282
Residential - Government Agencies
Available-for-Sale:
Available-for-Sale: Amortized Cost	1,410,231	1,561,603
Available-for-Sale: Gross Unrealized Gains	15,435	33,657
Available-for-Sale: Gross Unrealized Losses	(8,483)	(445)
Available-for-Sale: Fair Value	1,417,183	1,594,815
Held-to-Maturity:
Held-to-Maturity: Amortized Cost	1,877,804	917,459
Held-to-Maturity: Gross Unrealized Gains	18,683	30,580
Held-to-Maturity: Gross Unrealized Losses	(14,525)	(29)
Held-to-Maturity: Fair Value	1,881,962	948,010
Residential - U.S. Government-Sponsored Enterprises
Available-for-Sale:
Available-for-Sale: Amortized Cost	2,223,697	1,497,353
Available-for-Sale: Gross Unrealized Gains	8,395	21,254
Available-for-Sale: Gross Unrealized Losses	(32,040)	(324)
Available-for-Sale: Fair Value	2,200,052	1,518,283
Held-to-Maturity:
Held-to-Maturity: Amortized Cost	2,371,155	2,099,053
Held-to-Maturity: Gross Unrealized Gains	22,683	51,735
Held-to-Maturity: Gross Unrealized Losses	(24,397)	(291)
Held-to-Maturity: Fair Value	2,369,441	2,150,497
Commercial - Government Agencies
Available-for-Sale:
Available-for-Sale: Amortized Cost	177,721	243,029
Available-for-Sale: Gross Unrealized Gains	3,877	10,868
Available-for-Sale: Gross Unrealized Losses	(674)	(58)
Available-for-Sale: Fair Value	180,924	253,839
Held-to-Maturity:
Held-to-Maturity: Amortized Cost	465,069	192,921
Held-to-Maturity: Gross Unrealized Gains	900	3,179
Held-to-Maturity: Gross Unrealized Losses	(7,548)	(200)
Held-to-Maturity: Fair Value	458,421	195,900
Mortgage-Backed Securities
Available-for-Sale:
Available-for-Sale: Amortized Cost	3,811,649	3,301,985
Available-for-Sale: Gross Unrealized Gains	27,707	65,779
Available-for-Sale: Gross Unrealized Losses	(41,197)	(827)
Available-for-Sale: Fair Value	3,798,159	3,366,937
Held-to-Maturity:
Held-to-Maturity: Amortized Cost	4,714,028	3,209,433
Held-to-Maturity: Gross Unrealized Gains	42,266	85,494
Held-to-Maturity: Gross Unrealized Losses	(46,470)	(520)
Held-to-Maturity: Fair Value	$ 4,709,824	$ 3,294,407

Investment Securities - Additio

Investment Securities - Additional Information (Details) $ in Thousands	3 Months Ended			9 Months Ended
	Sep. 30, 2021USD ($)securityshares	Sep. 30, 2020USD ($)	Jun. 30, 2020USD ($)shares	Sep. 30, 2021USD ($)securityshares	Sep. 30, 2020USD ($)	Dec. 31, 2020USD ($)
Other Than Temporary Impairment Credit Losses Recognized In Earnings [Line Items]
Accrued interest receivable	$ 46,751			$ 46,751		$ 49,303
Carrying Value Of Investment Securities Pledged	3,500,000			3,500,000		3,600,000
Gain (loss) on sale of investment securities	$ (1,259)	$ (1,121)		(39)	$ 11,125
Fees paid to counterparties				$ 3,800
Number of available for sale debt securities in unrealized loss positions | security	213			213
Gross Gains on Sales of Investment Securities	$ 110			$ 3,785	14,257
Visa Class B Restricted Securities
Other Than Temporary Impairment Credit Losses Recognized In Earnings [Line Items]
Gain (loss) on sale of investment securities					$ 11,200
Equity securities remaining, shares | shares	0		80,214	0
Conversion ratio				0.016228
Gross Gains on Sales of Investment Securities			$ 14,200
Available-for-sale Securities
Other Than Temporary Impairment Credit Losses Recognized In Earnings [Line Items]
Accrued interest receivable	$ 7,900			$ 7,900		6,600
Held-to-maturity Securities
Other Than Temporary Impairment Credit Losses Recognized In Earnings [Line Items]
Accrued interest receivable	$ 9,000			$ 9,000		$ 6,800

Investment Securities - Analysi

Investment Securities - Analysis of the Contractual Maturities of Investment Securities (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Available-for-sale Securities, Debt Maturities, Single Maturity Date, Amortized Cost Basis Rolling Maturity[Abstract]
Due in One Year or Less	$ 26,227
Due After One Year Through Five Years	111,281
Due After Five Years Through Ten Years	270,764
Amortized Cost, Total	408,272
Available-for-sale Securities, Debt Maturities, Single Maturity Date, Rolling Maturities [Abstract]
Available-for-Sale: Amortized Cost, Total	4,362,585	$ 3,721,636
Due in One Year or Less	26,290
Due After One Year Through Five Years	113,889
Due After Five Years Through Ten Years	271,069
Fair Value, Total	411,248
Available-for-Sale: Fair Value	4,353,520	3,791,689
Held-to-maturity Securities, Debt Maturities, Single Maturity Date, Amortized Cost Basis, Rolling Maturities (Abstract]
Due in One Year or Less	33,254
Due After One Year Through Five Years	17,290
Due After Five Year Through Ten Years	123,966
Due After Ten Years	11,342
Amortized Cost, Total	185,852
Held-to-Maturity Securities, Debt Maturities, Single Maturity Date, Fair Value, Rolling Maturities [Abstract]
Due in One Year or Less	33,379
Due After One Year Through Five Years	17,285
Due After Five Year Through Ten Years	124,204
Due After Ten Years	11,071
Fair Value, Total	185,939
Held-to-Maturity: Amortized Cost	4,899,880
Held-to-Maturity: Fair Value	4,895,763	3,348,693
Debt Securities Issued by Government Agencies
Available-for-sale Securities, Debt Maturities, Single Maturity Date, Rolling Maturities [Abstract]
Available-for-sale Securities: Amortized Cost	142,664
Available-for-sale Securities, Debt Securities Issued by Government Agencies and Mortgage-Backed Securities: Fair Value	144,113
Residential - Government Agencies
Available-for-sale Securities, Debt Maturities, Single Maturity Date, Rolling Maturities [Abstract]
Available-for-sale Securities: Amortized Cost	1,410,231
Available-for-Sale: Amortized Cost, Total	1,410,231	1,561,603
Available-for-sale Securities, Debt Securities Issued by Government Agencies and Mortgage-Backed Securities: Fair Value	1,417,183
Available-for-Sale: Fair Value	1,417,183	1,594,815
Held-to-Maturity Securities, Debt Maturities, Single Maturity Date, Fair Value, Rolling Maturities [Abstract]
Held-to-Maturity: Mortgage-Backed Securities: Amortized Cost	1,877,804
Held-to-Maturity: Mortgage-Backed Securities: Fair Value	1,881,962
Held-to-Maturity: Fair Value	1,881,962	948,010
Residential - U.S. Government-Sponsored Enterprises
Available-for-sale Securities, Debt Maturities, Single Maturity Date, Rolling Maturities [Abstract]
Available-for-sale Securities: Amortized Cost	2,223,697
Available-for-Sale: Amortized Cost, Total	2,223,697	1,497,353
Available-for-sale Securities, Debt Securities Issued by Government Agencies and Mortgage-Backed Securities: Fair Value	2,200,052
Available-for-Sale: Fair Value	2,200,052	1,518,283
Held-to-Maturity Securities, Debt Maturities, Single Maturity Date, Fair Value, Rolling Maturities [Abstract]
Held-to-Maturity: Mortgage-Backed Securities: Amortized Cost	2,371,155
Held-to-Maturity: Mortgage-Backed Securities: Fair Value	2,369,441
Held-to-Maturity: Fair Value	2,369,441	2,150,497
Commercial - Government Agencies
Available-for-sale Securities, Debt Maturities, Single Maturity Date, Rolling Maturities [Abstract]
Available-for-sale Securities: Amortized Cost	177,721
Available-for-Sale: Amortized Cost, Total	177,721	243,029
Available-for-sale Securities, Debt Securities Issued by Government Agencies and Mortgage-Backed Securities: Fair Value	180,924
Available-for-Sale: Fair Value	180,924	253,839
Held-to-Maturity Securities, Debt Maturities, Single Maturity Date, Fair Value, Rolling Maturities [Abstract]
Held-to-Maturity: Mortgage-Backed Securities: Amortized Cost	465,069
Held-to-Maturity: Mortgage-Backed Securities: Fair Value	458,421
Held-to-Maturity: Fair Value	458,421	195,900
Mortgage-Backed Securities
Available-for-sale Securities, Debt Maturities, Single Maturity Date, Rolling Maturities [Abstract]
Available-for-sale Securities: Amortized Cost	3,811,649
Available-for-Sale: Amortized Cost, Total	3,811,649	3,301,985
Available-for-sale Securities, Debt Securities Issued by Government Agencies and Mortgage-Backed Securities: Fair Value	3,798,159
Available-for-Sale: Fair Value	3,798,159	3,366,937
Held-to-Maturity Securities, Debt Maturities, Single Maturity Date, Fair Value, Rolling Maturities [Abstract]
Held-to-Maturity: Mortgage-Backed Securities: Amortized Cost	4,714,028
Held-to-Maturity: Mortgage-Backed Securities: Fair Value	4,709,824
Held-to-Maturity: Fair Value	$ 4,709,824	$ 3,294,407

Investment Securities - Sched_2

Investment Securities - Schedule of Gains and Losses From Sales of Investment Securities (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Investments Debt And Equity Securities [Abstract]
Gross Gains on Sales of Investment Securities	$ 110		$ 3,785	$ 14,257
Gross Losses on Sales of Investment Securities	(1,369)	$ (1,121)	(3,824)	(3,132)
Net Gains (Losses) on Sales of Investment Securities	$ (1,259)	$ (1,121)	$ (39)	$ 11,125

Investment Securities - Sched_3

Investment Securities - Schedule of AFS Debt Securities in an Unrealized Loss Position (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Schedule Of Available For Sale Securities [Line Items]
Less Than 12 Months, Fair Value	$ 2,687,057	$ 318,953
Less Than 12 Months, Gross Unrealized Losses	(39,069)	(1,499)
12 Months or Longer, Fair Value	150,063	165,159
12 Months or Longer, Gross Unrealized Losses	(3,780)	(876)
Total Fair Value	2,837,120	484,112
Total Gross Unrealized Losses	(42,849)	(2,375)
Debt Securities Issued by the U.S. Treasury and Government Agencies
Schedule Of Available For Sale Securities [Line Items]
Less Than 12 Months, Fair Value	1,772	21,338
Less Than 12 Months, Gross Unrealized Losses	(4)	(42)
12 Months or Longer, Fair Value	10,458	87,070
12 Months or Longer, Gross Unrealized Losses	(102)	(549)
Total Fair Value	12,230	108,408
Total Gross Unrealized Losses	(106)	(591)
Debt Securities Issued by States and Political Subdivisions
Schedule Of Available For Sale Securities [Line Items]
Less Than 12 Months, Fair Value	413
Less Than 12 Months, Gross Unrealized Losses	(2)
12 Months or Longer, Fair Value		26
12 Months or Longer, Gross Unrealized Losses		(1)
Total Fair Value	413	26
Total Gross Unrealized Losses	(2)	(1)
Debt Securities Issued by Government-Sponsored Enterprises
Schedule Of Available For Sale Securities [Line Items]
Less Than 12 Months, Fair Value	99
Less Than 12 Months, Gross Unrealized Losses	(1)
Total Fair Value	99
Total Gross Unrealized Losses	(1)
Debt Securities Issued by Corporations
Schedule Of Available For Sale Securities [Line Items]
Less Than 12 Months, Fair Value	123,230	65,000
Less Than 12 Months, Gross Unrealized Losses	(734)	(853)
12 Months or Longer, Fair Value	64,190	50,000
12 Months or Longer, Gross Unrealized Losses	(809)	(103)
Total Fair Value	187,420	115,000
Total Gross Unrealized Losses	(1,543)	(956)
Residential - Government Agencies
Schedule Of Available For Sale Securities [Line Items]
Less Than 12 Months, Fair Value	804,605	113,538
Less Than 12 Months, Gross Unrealized Losses	(8,313)	(222)
12 Months or Longer, Fair Value	7,954	28,063
12 Months or Longer, Gross Unrealized Losses	(170)	(223)
Total Fair Value	812,559	141,601
Total Gross Unrealized Losses	(8,483)	(445)
Residential - U.S. Government-Sponsored Enterprises
Schedule Of Available For Sale Securities [Line Items]
Less Than 12 Months, Fair Value	1,756,938	94,002
Less Than 12 Months, Gross Unrealized Losses	(30,015)	(324)
12 Months or Longer, Fair Value	43,773
12 Months or Longer, Gross Unrealized Losses	(2,025)
Total Fair Value	1,800,711	94,002
Total Gross Unrealized Losses	(32,040)	(324)
Commercial - Government Agencies
Schedule Of Available For Sale Securities [Line Items]
Less Than 12 Months, Fair Value		25,075
Less Than 12 Months, Gross Unrealized Losses		(58)
12 Months or Longer, Fair Value	23,688
12 Months or Longer, Gross Unrealized Losses	(674)
Total Fair Value	23,688	25,075
Total Gross Unrealized Losses	(674)	(58)
Mortgage-Backed Securities
Schedule Of Available For Sale Securities [Line Items]
Less Than 12 Months, Fair Value	2,561,543	232,615
Less Than 12 Months, Gross Unrealized Losses	(38,328)	(604)
12 Months or Longer, Fair Value	75,415	28,063
12 Months or Longer, Gross Unrealized Losses	(2,869)	(223)
Total Fair Value	2,636,958	260,678
Total Gross Unrealized Losses	$ (41,197)	$ (827)

Investment Securities - Sched_4

Investment Securities - Schedule of Interest Income From Taxable and Non-Taxable Investment Securities (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Investments Debt And Equity Securities [Abstract]
Taxable	$ 32,889	$ 30,027	$ 91,510	$ 96,150
Non-Taxable	261	498	820	1,637
Total Interest Income from Investment Securities	$ 33,150	$ 30,525	$ 92,330	$ 97,787

Investment Securities - Sched_5

Investment Securities - Schedule of Carrying Value of Federal Home Loan Bank of Des Moines Stock and Federal Reserve Bank Stock (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Investments Debt And Equity Securities [Abstract]
Federal Home Loan Bank of Des Moines Stock	$ 10,000	$ 12,000
Federal Reserve Bank Stock	21,574	21,340
Total	$ 31,574	$ 33,340

Loans and Leases and the Allo_3

Loans and Leases and the Allowance for Credit Losses - Schedule of Loan and Lease Portfolio (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Loan and lease portfolio
Loans and Leases	$ 12,072,750	$ 11,940,020
Commercial
Loan and lease portfolio
Loans and Leases	4,992,024	5,100,686
Commercial | Commercial and Industrial
Loan and lease portfolio
Loans and Leases	1,325,446	1,357,610
Commercial | PPP
Loan and lease portfolio
Loans and Leases	268,480	517,683
Commercial | Commercial Mortgage
Loan and lease portfolio
Loans and Leases	2,994,520	2,854,829
Commercial | Construction
Loan and lease portfolio
Loans and Leases	296,052	259,798
Commercial | Lease Financing
Loan and lease portfolio
Loans and Leases	107,526	110,766
Consumer
Loan and lease portfolio
Loans and Leases	7,080,726	6,839,334
Consumer | Other
Loan and lease portfolio
Loans and Leases	400,723	395,483
Consumer | Residential Mortgage
Loan and lease portfolio
Loans and Leases	4,272,540	4,130,513
Consumer | Home Equity
Loan and lease portfolio
Loans and Leases	1,680,229	1,604,538
Consumer | Automobile
Loan and lease portfolio
Loans and Leases	$ 727,234	$ 708,800

Loans and Leases and the Allo_4

Loans and Leases and the Allowance for Credit Losses - Additional Information (Details) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2021USD ($)Loan	Sep. 30, 2020USD ($)	Sep. 30, 2021USD ($)Loan	Sep. 30, 2020USD ($)	Dec. 31, 2020USD ($)Loan
Loan and lease portfolio
Net gains related to sales of residential mortgage loans	$ 1,200	$ 3,400	$ 5,900	$ 9,000
Accrued interest receivable	46,751		46,751		$ 49,303
Revolving loans, converted to term loan during the period			$ 2,500	$ 1,300
Number of days non-accrual loans are not past due			30 days
Recorded Investment	72,700		$ 72,700		72,500
Available commitments to lend additional funds on loans modified as TDR			200		500
AIR allowance	700		700		$ 2,700
Consumer mortgage loans collateralized by residential real estate property that are in the process of foreclosure	$ 1,500		$ 1,500
Consumer
Loan and lease portfolio
Number of loan and lease concessions - COVID-19 | Loan	31		31		1,920
Loan and lease modifications, amount - COVID-19	$ 7,500		$ 7,500		$ 178,100
Commercial
Loan and lease portfolio
Number of loan and lease concessions - COVID-19 | Loan	23		23		210
Loan and lease modifications, amount - COVID-19	$ 130,400		$ 130,400		$ 311,600
Pass | Residential Mortgage
Loan and lease portfolio
Number of days past due for loans and leases in classified credit quality indicator			90 days
Maximum current loan-to-value ratio for residential mortgage and home equity loans to be considered as pass (as a percent)			60.00%
Pass | Home Equity
Loan and lease portfolio
Number of days past due for loans and leases in classified credit quality indicator			90 days
Maximum current loan-to-value ratio for residential mortgage and home equity loans to be considered as pass (as a percent)			60.00%
Classified
Loan and lease portfolio
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			6 months
Classified | Consumer
Loan and lease portfolio
Number of days past due for loans and leases in classified credit quality indicator			90 days
Minimum
Loan and lease portfolio
Default period past due following modification of loans in TDR (in days)			60 days
PPP Loans, Administered by the SBA
Loan and lease portfolio
Loans interest rate	1.00%		1.00%
PPP Loans, Administered by the SBA | Minimum
Loan and lease portfolio
Loans maturity period			2 years
PPP Loans, Administered by the SBA | Maximum
Loan and lease portfolio
Loans maturity period			5 years
Accrued Interest Receivable
Loan and lease portfolio
Accrued interest receivable	$ 29,900		$ 29,900		$ 35,900

Loans and Leases and the Allo_5

Loans and Leases and the Allowance for Credit Losses - Schedule of Activity in Allowance by Portfolio Segment (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Allowance for Credit Losses:
Balance at Beginning of Period	$ 180,385	$ 173,439	$ 216,252	$ 110,027
Loans and Leases Charged-Off	(3,445)	(2,347)	(14,045)	(17,807)
Recoveries on Loans and Leases Previously Charged-Off	2,252	3,804	8,752	10,413
Net Loans and Leases Recovered (Charged-Off)	(1,193)	1,457	(5,293)	(7,394)
Provision for Credit Losses	(11,272)	28,600	(43,039)	102,600
Balance at End of Period	167,920	203,496	167,920	203,496
CECL Adoption Impact | Accounting Standards Update 2016-13
Allowance for Credit Losses:
Balance at Beginning of Period				(1,737)
January 1, 2020 | Accounting Standards Update 2016-13
Allowance for Credit Losses:
Balance at Beginning of Period				108,290
Commercial
Allowance for Credit Losses:
Balance at Beginning of Period	78,639	72,522	84,847	73,801
Loans and Leases Charged-Off	(196)	(171)	(900)	(1,520)
Recoveries on Loans and Leases Previously Charged-Off	118	231	374	2,084
Net Loans and Leases Recovered (Charged-Off)	(78)	60	(526)	564
Provision for Credit Losses	(9,894)	7,685	(15,654)	24,691
Balance at End of Period	68,667	80,267	68,667	80,267
Commercial | CECL Adoption Impact | Accounting Standards Update 2016-13
Allowance for Credit Losses:
Balance at Beginning of Period				(18,789)
Commercial | January 1, 2020 | Accounting Standards Update 2016-13
Allowance for Credit Losses:
Balance at Beginning of Period				55,012
Consumer
Allowance for Credit Losses:
Balance at Beginning of Period	101,746	100,917	131,405	36,226
Loans and Leases Charged-Off	(3,249)	(2,176)	(13,145)	(16,287)
Recoveries on Loans and Leases Previously Charged-Off	2,134	3,573	8,378	8,329
Net Loans and Leases Recovered (Charged-Off)	(1,115)	1,397	(4,767)	(7,958)
Provision for Credit Losses	(1,378)	20,915	(27,385)	77,909
Balance at End of Period	$ 99,253	$ 123,229	$ 99,253	123,229
Consumer | CECL Adoption Impact | Accounting Standards Update 2016-13
Allowance for Credit Losses:
Balance at Beginning of Period				17,052
Consumer | January 1, 2020 | Accounting Standards Update 2016-13
Allowance for Credit Losses:
Balance at Beginning of Period				$ 53,278

Loans and Leases and the Allo_6

Loans and Leases and the Allowance for Credit Losses - Schedule of Amortized Cost Basis of Loans and Leases by Credit Quality Indicator, Loan Class, and Year of Origination (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Financing Receivable, Credit Quality Indicator [Line Items]
YTD March 31, 2021	$ 2,785,941	$ 3,669,902
2020	2,832,060	1,701,148
2019	1,198,735	1,078,600
2018	751,953	879,110
2017	587,413	932,627
Prior	1,839,710	1,545,761
Revolving Loans	2,039,657	2,091,726
Revolving Loans Converted to Term Loans	37,281	41,146
Total Loans and Leases	12,072,750	11,940,020
Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
YTD March 31, 2021	1,304,099	2,078,659
2020	1,436,940	764,275
2019	532,943	531,323
2018	388,910	315,087
2017	237,316	343,502
Prior	719,421	568,609
Revolving Loans	371,713	498,207
Revolving Loans Converted to Term Loans	682	1,024
Total Loans and Leases	4,992,024	5,100,686
Commercial | Commercial and Industrial
Financing Receivable, Credit Quality Indicator [Line Items]
YTD March 31, 2021	337,699	470,690
2020	376,530	150,800
2019	91,563	151,734
2018	82,576	50,162
2017	32,521	52,483
Prior	107,650	87,530
Revolving Loans	296,225	393,187
Revolving Loans Converted to Term Loans	682	1,024
Total Loans and Leases	1,325,446	1,357,610
Commercial | Commercial and Industrial | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
YTD March 31, 2021	335,503	426,780
2020	341,306	149,024
2019	91,475	149,468
2018	80,521	49,385
2017	31,948	52,354
Prior	89,088	68,269
Revolving Loans	257,097	342,339
Revolving Loans Converted to Term Loans	589	847
Total Loans and Leases	1,227,527	1,238,466
Commercial | Commercial and Industrial | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
YTD March 31, 2021	2,008	11,702
2020	33,200	42
2019	0	0
2018	0	0
2017	0	110
Prior	153	95
Revolving Loans	25,343	32,319
Revolving Loans Converted to Term Loans	26	52
Total Loans and Leases	60,730	44,320
Commercial | Commercial and Industrial | Classified
Financing Receivable, Credit Quality Indicator [Line Items]
YTD March 31, 2021	188	32,208
2020	2,024	1,734
2019	88	2,266
2018	2,055	777
2017	573	19
Prior	18,409	19,166
Revolving Loans	13,785	18,529
Revolving Loans Converted to Term Loans	67	125
Total Loans and Leases	37,189	74,824
Commercial | PPP
Financing Receivable, Credit Quality Indicator [Line Items]
YTD March 31, 2021	196,837	517,683
2020	71,643	0
2019	0	0
2018	0	0
2017	0	0
Prior	0	0
Revolving Loans	0	0
Revolving Loans Converted to Term Loans	0	0
Total Loans and Leases	268,480	517,683
Commercial | PPP | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
YTD March 31, 2021	196,837	517,683
2020	71,643	0
2019	0	0
2018	0	0
2017	0	0
Prior	0	0
Revolving Loans	0	0
Revolving Loans Converted to Term Loans	0	0
Total Loans and Leases	268,480	517,683
Commercial | Commercial Mortgage
Financing Receivable, Credit Quality Indicator [Line Items]
YTD March 31, 2021	649,163	963,839
2020	854,756	487,545
2019	363,141	353,437
2018	294,693	252,548
2017	201,315	281,267
Prior	570,240	439,324
Revolving Loans	61,212	76,869
Revolving Loans Converted to Term Loans	0	0
Total Loans and Leases	2,994,520	2,854,829
Commercial | Commercial Mortgage | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
YTD March 31, 2021	608,445	847,676
2020	774,572	458,472
2019	362,497	350,363
2018	264,407	245,157
2017	196,531	267,860
Prior	554,832	425,157
Revolving Loans	61,212	76,869
Revolving Loans Converted to Term Loans	0	0
Total Loans and Leases	2,822,496	2,671,554
Commercial | Commercial Mortgage | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
YTD March 31, 2021	39,129	66,523
2020	69,618	28,418
2019	0	291
2018	30,286	7,117
2017	0	8,665
Prior	6,122	5,035
Revolving Loans	0	0
Revolving Loans Converted to Term Loans	0	0
Total Loans and Leases	145,155	116,049
Commercial | Commercial Mortgage | Classified
Financing Receivable, Credit Quality Indicator [Line Items]
YTD March 31, 2021	1,589	49,640
2020	10,566	655
2019	644	2,783
2018	0	274
2017	4,784	4,742
Prior	9,286	9,132
Revolving Loans	0	0
Revolving Loans Converted to Term Loans	0	0
Total Loans and Leases	26,869	67,226
Commercial | Construction
Financing Receivable, Credit Quality Indicator [Line Items]
YTD March 31, 2021	101,403	106,508
2020	118,076	105,731
2019	61,403	11,275
2018	0	8,133
2017	894	0
Prior	0	0
Revolving Loans	14,276	28,151
Revolving Loans Converted to Term Loans	0	0
Total Loans and Leases	296,052	259,798
Commercial | Construction | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
YTD March 31, 2021	101,403	106,508
2020	118,076	105,731
2019	61,403	11,275
2018	0	8,133
2017	894	0
Prior	0	0
Revolving Loans	14,276	28,151
Revolving Loans Converted to Term Loans	0	0
Total Loans and Leases	296,052	259,798
Commercial | Lease Financing
Financing Receivable, Credit Quality Indicator [Line Items]
YTD March 31, 2021	18,997	19,939
2020	15,935	20,199
2019	16,836	14,877
2018	11,641	4,244
2017	2,586	9,752
Prior	41,531	41,755
Revolving Loans	0	0
Revolving Loans Converted to Term Loans	0	0
Total Loans and Leases	107,526	110,766
Commercial | Lease Financing | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
YTD March 31, 2021	18,997	19,906
2020	15,935	20,132
2019	16,836	13,785
2018	10,749	4,202
2017	2,586	9,657
Prior	41,531	41,755
Revolving Loans	0	0
Revolving Loans Converted to Term Loans	0	0
Total Loans and Leases	106,634	109,437
Commercial | Lease Financing | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
YTD March 31, 2021	0
2020	0
2019	0
2018	892
2017	0
Prior	0
Revolving Loans	0
Revolving Loans Converted to Term Loans	0
Total Loans and Leases	892
Commercial | Lease Financing | Classified
Financing Receivable, Credit Quality Indicator [Line Items]
YTD March 31, 2021		33
2020		67
2019		1,092
2018		42
2017		95
Prior		0
Revolving Loans		0
Revolving Loans Converted to Term Loans		0
Total Loans and Leases		1,329
Consumer
Financing Receivable, Credit Quality Indicator [Line Items]
YTD March 31, 2021	1,481,842	1,591,243
2020	1,395,120	936,873
2019	665,792	547,277
2018	363,043	564,023
2017	350,097	589,125
Prior	1,120,289	977,152
Revolving Loans	1,667,944	1,593,519
Revolving Loans Converted to Term Loans	36,599	40,122
Total Loans and Leases	7,080,726	6,839,334
Consumer | Residential Mortgage
Financing Receivable, Credit Quality Indicator [Line Items]
YTD March 31, 2021	1,120,627	1,300,831
2020	1,173,498	576,746
2019	403,698	295,522
2018	201,297	455,197
2017	287,593	545,798
Prior	1,085,827	956,419
Revolving Loans	0	0
Revolving Loans Converted to Term Loans	0	0
Total Loans and Leases	4,272,540	4,130,513
Consumer | Residential Mortgage | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
YTD March 31, 2021	1,120,627	1,300,831
2020	1,173,498	576,452
2019	403,404	295,522
2018	201,297	454,165
2017	285,312	545,798
Prior	1,083,359	954,120
Revolving Loans	0	0
Revolving Loans Converted to Term Loans	0	0
Total Loans and Leases	4,267,497	4,126,888
Consumer | Residential Mortgage | Classified
Financing Receivable, Credit Quality Indicator [Line Items]
YTD March 31, 2021	0	0
2020	0	294
2019	294	0
2018	0	1,032
2017	2,281	0
Prior	2,468	2,299
Revolving Loans	0	0
Revolving Loans Converted to Term Loans	0	0
Total Loans and Leases	5,043	3,625
Consumer | Home Equity Loan
Financing Receivable, Credit Quality Indicator [Line Items]
YTD March 31, 2021	0	0
2020	0	0
2019	0	0
2018	0	0
2017	0	0
Prior	3,395	4,537
Revolving Loans	1,641,723	1,561,364
Revolving Loans Converted to Term Loans	35,111	38,637
Total Loans and Leases	1,680,229	1,604,538
Consumer | Home Equity Loan | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
YTD March 31, 2021	0	0
2020	0	0
2019	0	0
2018	0	0
2017	0	0
Prior	3,282	4,449
Revolving Loans	1,636,803	1,556,671
Revolving Loans Converted to Term Loans	34,308	37,559
Total Loans and Leases	1,674,393	1,598,679
Consumer | Home Equity Loan | Classified
Financing Receivable, Credit Quality Indicator [Line Items]
YTD March 31, 2021	0	0
2020	0	0
2019	0	0
2018	0	0
2017	0	0
Prior	113	88
Revolving Loans	4,920	4,693
Revolving Loans Converted to Term Loans	803	1,078
Total Loans and Leases	5,836	5,859
Consumer | Automobile
Financing Receivable, Credit Quality Indicator [Line Items]
YTD March 31, 2021	233,427	219,319
2020	166,735	214,159
2019	155,992	158,387
2018	105,988	68,889
2017	40,984	34,060
Prior	24,108	13,986
Revolving Loans	0	0
Revolving Loans Converted to Term Loans	0	0
Total Loans and Leases	727,234	708,800
Consumer | Automobile | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
YTD March 31, 2021	233,401	219,218
2020	166,682	213,914
2019	155,905	158,216
2018	105,933	68,776
2017	40,967	33,899
Prior	23,952	13,850
Revolving Loans	0	0
Revolving Loans Converted to Term Loans	0	0
Total Loans and Leases	726,840	707,873
Consumer | Automobile | Classified
Financing Receivable, Credit Quality Indicator [Line Items]
YTD March 31, 2021	26	101
2020	53	245
2019	87	171
2018	55	113
2017	17	161
Prior	156	136
Revolving Loans	0	0
Revolving Loans Converted to Term Loans	0	0
Total Loans and Leases	394	927
Consumer | Other Loans
Financing Receivable, Credit Quality Indicator [Line Items]
YTD March 31, 2021	127,788	71,093
2020	54,887	145,968
2019	106,102	93,368
2018	55,758	39,937
2017	21,520	9,267
Prior	6,959	2,210
Revolving Loans	26,221	32,155
Revolving Loans Converted to Term Loans	1,488	1,485
Total Loans and Leases	400,723	395,483
Consumer | Other Loans | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
YTD March 31, 2021	127,788	71,042
2020	54,794	145,549
2019	105,858	92,993
2018	55,663	39,770
2017	21,442	9,225
Prior	6,949	2,189
Revolving Loans	26,151	32,070
Revolving Loans Converted to Term Loans	1,485	1,485
Total Loans and Leases	400,130	394,323
Consumer | Other Loans | Classified
Financing Receivable, Credit Quality Indicator [Line Items]
YTD March 31, 2021	0	51
2020	93	419
2019	244	375
2018	95	167
2017	78	42
Prior	10	21
Revolving Loans	70	85
Revolving Loans Converted to Term Loans	3	0
Total Loans and Leases	$ 593	$ 1,160

Loans and Leases and the Allo_7

Loans and Leases and the Allowance for Credit Losses - Schedule of Aging Analysis by Class of Loan and Lease Portfolio (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	$ 12,072,750	$ 11,940,020
Non-Accrual	18,288	16,149
Total Past Due and Non-Accrual	46,597	52,619
Total Loans and Leases	12,072,750	11,940,020
Non-Accrual Loans and Leases that are Current	10,243	8,355
Commercial
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	4,992,024	5,100,686
Non-Accrual	8,518	8,968
Total Past Due and Non-Accrual	10,535	9,218
Total Loans and Leases	4,992,024	5,100,686
Non-Accrual Loans and Leases that are Current	8,481	5,268
Commercial | Commercial and Industrial
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	1,325,446	1,357,610
Non-Accrual	209	441
Total Past Due and Non-Accrual	2,226	691
Total Loans and Leases	1,325,446	1,357,610
Non-Accrual Loans and Leases that are Current	172	285
Commercial | Commercial Mortgage
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	2,994,520	2,854,829
Non-Accrual	8,309	8,527
Total Past Due and Non-Accrual	8,309	8,527
Total Loans and Leases	2,994,520	2,854,829
Non-Accrual Loans and Leases that are Current	8,309	4,983
Commercial | Construction
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	296,052	259,798
Non-Accrual	0	0
Total Past Due and Non-Accrual	0	0
Total Loans and Leases	296,052	259,798
Non-Accrual Loans and Leases that are Current	0	0
Commercial | Lease Financing
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	107,526	110,766
Non-Accrual	0	0
Total Past Due and Non-Accrual	0	0
Total Loans and Leases	107,526	110,766
Non-Accrual Loans and Leases that are Current	0	0
Commercial | PPP Loans, Administered by the SBA
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	268,480	517,683
Non-Accrual	0	0
Total Past Due and Non-Accrual	0	0
Total Loans and Leases	268,480	517,683
Non-Accrual Loans and Leases that are Current	0	0
Consumer
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	7,080,726	6,839,334
Non-Accrual	9,770	7,181
Total Past Due and Non-Accrual	36,062	43,401
Total Loans and Leases	7,080,726	6,839,334
Non-Accrual Loans and Leases that are Current	1,762	3,087
Consumer | Other
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Non-Accrual	0	0
Total Past Due and Non-Accrual	3,403	5,328
Total Loans and Leases	400,723	395,483
Non-Accrual Loans and Leases that are Current	0	0
Consumer | Residential Mortgage
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	4,272,540	4,130,513
Non-Accrual	4,348	3,223
Total Past Due and Non-Accrual	13,451	14,629
Total Loans and Leases	4,272,540	4,130,513
Non-Accrual Loans and Leases that are Current	528	2,100
Consumer | Home Equity
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Non-Accrual	5,422	3,958
Total Past Due and Non-Accrual	11,276	13,946
Total Loans and Leases	1,680,229	1,604,538
Non-Accrual Loans and Leases that are Current	1,234	987
Consumer | Automobile
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	727,234	708,800
Non-Accrual	0	0
Total Past Due and Non-Accrual	7,932	9,498
Total Loans and Leases	727,234	708,800
Non-Accrual Loans and Leases that are Current	0	0
30 - 59 Days Past Due
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	11,917	16,577
30 - 59 Days Past Due | Commercial
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	130	191
30 - 59 Days Past Due | Commercial | Commercial and Industrial
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	130	191
30 - 59 Days Past Due | Commercial | Commercial Mortgage
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	0	0
30 - 59 Days Past Due | Commercial | Construction
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	0	0
30 - 59 Days Past Due | Commercial | Lease Financing
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	0	0
30 - 59 Days Past Due | Commercial | PPP Loans, Administered by the SBA
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	0	0
30 - 59 Days Past Due | Consumer
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	11,787	16,386
30 - 59 Days Past Due | Consumer | Other
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	2,067	2,556
30 - 59 Days Past Due | Consumer | Residential Mortgage
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	1,074	4,049
30 - 59 Days Past Due | Consumer | Home Equity
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	2,219	3,423
30 - 59 Days Past Due | Consumer | Automobile
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	6,427	6,358
60 - 89 Days Past Due
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	7,682	9,347
60 - 89 Days Past Due | Commercial
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	1,887	59
60 - 89 Days Past Due | Commercial | Commercial and Industrial
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	1,887	59
60 - 89 Days Past Due | Commercial | Commercial Mortgage
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	0	0
60 - 89 Days Past Due | Commercial | Construction
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	0	0
60 - 89 Days Past Due | Commercial | Lease Financing
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	0	0
60 - 89 Days Past Due | Commercial | PPP Loans, Administered by the SBA
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	0	0
60 - 89 Days Past Due | Consumer
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	5,795	9,288
60 - 89 Days Past Due | Consumer | Other
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	743	1,612
60 - 89 Days Past Due | Consumer | Residential Mortgage
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	3,253	2,083
60 - 89 Days Past Due | Consumer | Home Equity
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	689	3,378
60 - 89 Days Past Due | Consumer | Automobile
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	1,110	2,215
Past Due 90 Days or More
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	8,710	10,546
Past Due 90 Days or More | Commercial
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	0	0
Past Due 90 Days or More | Commercial | Commercial and Industrial
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	0	0
Past Due 90 Days or More | Commercial | Commercial Mortgage
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	0	0
Past Due 90 Days or More | Commercial | Construction
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	0	0
Past Due 90 Days or More | Commercial | Lease Financing
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	0	0
Past Due 90 Days or More | Commercial | PPP Loans, Administered by the SBA
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	0	0
Past Due 90 Days or More | Consumer
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	8,710	10,546
Past Due 90 Days or More | Consumer | Other
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	593	1,160
Past Due 90 Days or More | Consumer | Residential Mortgage
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	4,776	5,274
Past Due 90 Days or More | Consumer | Home Equity
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	2,946	3,187
Past Due 90 Days or More | Consumer | Automobile
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	395	925
Current
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	12,026,153	11,887,401
Current | Commercial
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	4,981,489	5,091,468
Current | Commercial | Commercial and Industrial
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	1,323,220	1,356,919
Current | Commercial | Commercial Mortgage
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	2,986,211	2,846,302
Current | Commercial | Construction
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	296,052	259,798
Current | Commercial | Lease Financing
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	107,526	110,766
Current | Commercial | PPP Loans, Administered by the SBA
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	268,480	517,683
Current | Consumer
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	7,044,664	6,795,933
Current | Consumer | Other
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	397,320	390,155
Current | Consumer | Residential Mortgage
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	4,259,089	4,115,884
Current | Consumer | Home Equity
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	1,668,953	1,590,592
Current | Consumer | Automobile
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	$ 719,302	$ 699,302

Loans and Leases and the Allo_8

Loans and Leases and the Allowance for Credit Losses - Schedule of Non-Accrual Loans and Leases (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Financing Receivable Nonaccrual Status [Line Items]
Non-accrual loans with a related ACL	$ 14,385	$ 16,022
Non-accrual loans without a related ACL	3,903	127
Total Non-accrual loans	18,288	16,149
Commercial
Financing Receivable Nonaccrual Status [Line Items]
Non-accrual loans with a related ACL	4,974	8,968
Non-accrual loans without a related ACL	3,544	0
Total Non-accrual loans	8,518	8,968
Commercial | Commercial and Industrial
Financing Receivable Nonaccrual Status [Line Items]
Non-accrual loans with a related ACL	209	441
Non-accrual loans without a related ACL	0	0
Total Non-accrual loans	209	441
Commercial | Commercial Mortgage
Financing Receivable Nonaccrual Status [Line Items]
Non-accrual loans with a related ACL	4,765	8,527
Non-accrual loans without a related ACL	3,544	0
Total Non-accrual loans	8,309	8,527
Consumer
Financing Receivable Nonaccrual Status [Line Items]
Non-accrual loans with a related ACL	9,411	7,054
Non-accrual loans without a related ACL	359	127
Total Non-accrual loans	9,770	7,181
Consumer | Residential Mortgage
Financing Receivable Nonaccrual Status [Line Items]
Non-accrual loans with a related ACL	3,989	3,096
Non-accrual loans without a related ACL	359	127
Total Non-accrual loans	4,348	3,223
Consumer | Home Equity
Financing Receivable Nonaccrual Status [Line Items]
Non-accrual loans with a related ACL	5,422	3,958
Non-accrual loans without a related ACL	0	0
Total Non-accrual loans	$ 5,422	$ 3,958

Loans and Leases and the Allo_9

Loans and Leases and the Allowance for Credit Losses - Schedule of Loans Modified in TDR (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021USD ($)contract	Sep. 30, 2020USD ($)contract	Sep. 30, 2021USD ($)contract	Sep. 30, 2020USD ($)contract
Financing Receivable Modifications [Line Items]
Number of Contracts | contract	128	22	505	129
Recorded Investment (as of period end)	$ 3,799	$ 546	$ 15,754	$ 3,124
Increase in Allowance (as of period end)	$ 107	$ 9	$ 811	$ 40
Commercial
Financing Receivable Modifications [Line Items]
Number of Contracts | contract	2	1	7	4
Recorded Investment (as of period end)	$ 153	$ 92	$ 258	$ 1,287
Increase in Allowance (as of period end)	$ 2	$ 1	$ 4	$ 3
Commercial | Commercial and Industrial
Financing Receivable Modifications [Line Items]
Number of Contracts | contract	2	0	7	3
Recorded Investment (as of period end)	$ 153	$ 0	$ 258	$ 188
Increase in Allowance (as of period end)	$ 2	$ 0	$ 4	$ 3
Commercial | Construction
Financing Receivable Modifications [Line Items]
Number of Contracts | contract	0	1	0	1
Recorded Investment (as of period end)	$ 0	$ 92	$ 0	$ 1,099
Increase in Allowance (as of period end)	$ 0	$ 1	$ 0	$ 0
Consumer
Financing Receivable Modifications [Line Items]
Number of Contracts | contract	126	21	498	125
Recorded Investment (as of period end)	$ 3,646	$ 454	$ 15,496	$ 1,837
Increase in Allowance (as of period end)	$ 105	$ 8	$ 807	$ 37
Consumer | Other
Financing Receivable Modifications [Line Items]
Number of Contracts | contract	51	7	144	42
Recorded Investment (as of period end)	$ 439	$ 93	$ 1,321	$ 357
Increase in Allowance (as of period end)	$ 16	$ 4	$ 48	$ 15
Consumer | Residential Mortgage
Financing Receivable Modifications [Line Items]
Number of Contracts | contract	2	0	14	0
Recorded Investment (as of period end)	$ 796	$ 0	$ 5,785	$ 0
Increase in Allowance (as of period end)	$ 21	$ 0	$ 584	$ 0
Consumer | Home Equity
Financing Receivable Modifications [Line Items]
Number of Contracts | contract	2	2	9	2
Recorded Investment (as of period end)	$ 779	$ 134	$ 1,488	$ 134
Increase in Allowance (as of period end)	$ 46	$ 0	$ 80	$ 0
Consumer | Automobile
Financing Receivable Modifications [Line Items]
Number of Contracts | contract	71	12	331	81
Recorded Investment (as of period end)	$ 1,632	$ 227	$ 6,902	$ 1,346
Increase in Allowance (as of period end)	$ 22	$ 4	$ 95	$ 22

Loans and Leases and the All_10

Loans and Leases and the Allowance for Credit Losses - Schedule of TDRs that Defaulted during Period, within Twelve Months of Modification Date (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021USD ($)contract	Sep. 30, 2020USD ($)contract	Sep. 30, 2021USD ($)contract	Sep. 30, 2020USD ($)contract
Financing Receivable Modifications [Line Items]
Number of Contracts, TDRs that Defaulted | contract	13	1	25	39
Recorded Investment (as of period ended), TDRs that Defaulted | $	$ 184	$ 6	$ 853	$ 629
Consumer
Financing Receivable Modifications [Line Items]
Number of Contracts, TDRs that Defaulted | contract	13	1	25	39
Recorded Investment (as of period ended), TDRs that Defaulted | $	$ 184	$ 6	$ 853	$ 629
Consumer | Other
Financing Receivable Modifications [Line Items]
Number of Contracts, TDRs that Defaulted | contract	5	0	12	6
Recorded Investment (as of period ended), TDRs that Defaulted | $	$ 27	$ 0	$ 112	$ 38
Consumer | Residential Mortgage
Financing Receivable Modifications [Line Items]
Number of Contracts, TDRs that Defaulted | contract			1	0
Recorded Investment (as of period ended), TDRs that Defaulted | $			$ 528	$ 0
Consumer | Automobile
Financing Receivable Modifications [Line Items]
Number of Contracts, TDRs that Defaulted | contract	8	1	12	33
Recorded Investment (as of period ended), TDRs that Defaulted | $	$ 157	$ 6	$ 213	$ 591

Mortgage Servicing Rights - Add

Mortgage Servicing Rights - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Transfers And Servicing Of Financial Assets [Abstract]
Residential mortgage loans serviced for third parties	$ 2,700		$ 2,700		$ 2,800
Servicing income, including late and ancillary fees	$ 1.6	$ 1.7	$ 4.8	$ 5.4

Mortgage Servicing Rights - Sum

Mortgage Servicing Rights - Summary of Carrying Value Under the Fair Value Measurement Method (Details) - Mortgage Servicing Rights - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Servicing Assets At Fair Value [Line Items]
Balance at Beginning of Period	$ 875	$ 1,068	$ 958	$ 1,126
Change in Fair Value Due to Payoffs:	(49)	(50)	(132)	(108)
Balance at End of Period	$ 826	$ 1,018	$ 826	$ 1,018

Mortgage Servicing Rights - S_2

Mortgage Servicing Rights - Summary of Carrying Value Under the Amortization Method (Details) - Mortgage Servicing Rights - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Mortgage Servicing Rights Accounted for Under the Amortization Method (Rollforward)
Balance at Beginning of Period	$ 20,598	$ 21,836	$ 18,694	$ 23,896
Servicing Rights that Resulted From Asset Transfers	1,082	872	4,022	3,042
Amortization	(1,069)	(1,271)	(3,228)	(3,684)
Valuation Allowance Recovery (Provision)	662	(568)	1,785	(2,385)
Balance at End of Period	21,273	20,869	21,273	20,869
Balance at Beginning of Period	(2,769)	(1,817)	(3,892)
Valuation Allowance Recovery (Provision)	662	(568)	1,785	(2,385)
Balance at End of Period	(2,107)	(2,385)	(2,107)	(2,385)
Fair Value of Mortgage Servicing Rights Accounted for Under the Amortization Method
Beginning of Period	20,598	21,836	18,694	25,714
End of Period	$ 21,273	$ 20,870	$ 21,273	$ 20,870

Mortgage Servicing Rights - Sch

Mortgage Servicing Rights - Schedule of Key Data and Assumptions Used in Estimating the Fair Value (Details) - Mortgage Servicing Rights	9 Months Ended	12 Months Ended
	Sep. 30, 2021	Dec. 31, 2020
Assumption For Fair Value As Of Balance Sheet Date Of Interests Continued To Be Held By Transferor Servicing Assets Or Liabilities [Line Items]
Weighted-Average Constant Prepayment Rate (as a percent)	11.50%	14.42%
Weighted-Average Life (in years)	6 years	4 years 11 months 26 days
Weighted-Average Note Rate (as a percent)	3.67%	3.87%
Weighted-Average Discount Rate (as a percent)	6.67%	5.81%

Mortgage Servicing Rights - S_3

Mortgage Servicing Rights - Schedule of Sensitivity Analysis of the Fair Value (Details) - Mortgage Servicing Rights - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Constant Prepayment Rate
Decrease in fair value from 25 basis points (“bps”) adverse change	$ (246)	$ (203)
Decrease in fair value from 50 bps adverse change	(487)	(401)
Discount Rate
Decrease in fair value from 25 bps adverse change	(223)	(184)
Decrease in fair value from 50 bps adverse change	$ (441)	$ (365)

Affordable Housing Projects T_3

Affordable Housing Projects Tax Credit Partnerships - Additional Information (Details) - USD ($)	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Equity Method Investments And Joint Ventures [Abstract]
Net affordable housing tax credit investments and related unfunded commitments	$ 126,900,000		$ 138,900,000
Write down from impairment of LIHTC Investments	$ 0	$ 0

Affordable Housing Projects T_4

Affordable Housing Projects Tax Credit Partnerships - Expected Payments for Unfunded Affordable Housing Commitments (Details) $ in Thousands	Sep. 30, 2021USD ($)
Affordable Housing Tax Credit Investments, Unfunded Commitment [Abstract]
2021	$ 12,710
2022	6,757
2023	19,025
2024	173
2025	56
Thereafter	3,424
Total Unfunded Commitments	$ 42,145

Affordable Housing Projects T_5

Affordable Housing Projects Tax Credit Partnerships - Tax Credits and Other Tax Benefits Recognized and Amortization Expense (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Effective Yield Method
Tax credits and other tax benefits recognized	$ 2,151	$ 2,938	$ 6,453	$ 8,814
Amortization Expense in Provision for Income Taxes	1,670	2,347	5,032	7,042
Proportional Amortization Method
Tax credits and other tax benefits recognized	2,708	1,794	8,178	4,839
Amortization Expense in Provision for Income Taxes	$ 2,332	$ 1,345	$ 7,043	$ 3,580

Balance Sheet Offsetting - Fair

Balance Sheet Offsetting - Fair Value of the Related Collateral Pledged Against Repurchase Agreements (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Securities Sold Under Agreements to Repurchase
Securities Sold under Agreements to Repurchase	$ 450,490	$ 600,590
Debt Securities Issued by States and Political Subdivisions
Securities Sold Under Agreements to Repurchase
Securities Sold under Agreements to Repurchase	490	590
Residential - Government Agencies
Securities Sold Under Agreements to Repurchase
Securities Sold under Agreements to Repurchase	57,063	103,809
Residential - U.S. Government-Sponsored Enterprises
Securities Sold Under Agreements to Repurchase
Securities Sold under Agreements to Repurchase	392,937	496,191
Maturity Up To 90 Days
Securities Sold Under Agreements to Repurchase
Securities Sold under Agreements to Repurchase	0	100
Maturity Up To 90 Days | Debt Securities Issued by States and Political Subdivisions
Securities Sold Under Agreements to Repurchase
Securities Sold under Agreements to Repurchase	0	100
Maturity Up To 90 Days | Residential - Government Agencies
Securities Sold Under Agreements to Repurchase
Securities Sold under Agreements to Repurchase	0	0
Maturity Up To 90 Days | Residential - U.S. Government-Sponsored Enterprises
Securities Sold Under Agreements to Repurchase
Securities Sold under Agreements to Repurchase	0	0
Maturity 91 To 365 Days
Securities Sold Under Agreements to Repurchase
Securities Sold under Agreements to Repurchase	0	0
Maturity 91 To 365 Days | Debt Securities Issued by States and Political Subdivisions
Securities Sold Under Agreements to Repurchase
Securities Sold under Agreements to Repurchase	0	0
Maturity 91 To 365 Days | Residential - Government Agencies
Securities Sold Under Agreements to Repurchase
Securities Sold under Agreements to Repurchase	0	0
Maturity 91 To 365 Days | Residential - U.S. Government-Sponsored Enterprises
Securities Sold Under Agreements to Repurchase
Securities Sold under Agreements to Repurchase	0	0
Maturity 1 To 3 Years
Securities Sold Under Agreements to Repurchase
Securities Sold under Agreements to Repurchase	275,000	25,000
Maturity 1 To 3 Years | Debt Securities Issued by States and Political Subdivisions
Securities Sold Under Agreements to Repurchase
Securities Sold under Agreements to Repurchase	0	0
Maturity 1 To 3 Years | Residential - Government Agencies
Securities Sold Under Agreements to Repurchase
Securities Sold under Agreements to Repurchase	43,461	20,210
Maturity 1 To 3 Years | Residential - U.S. Government-Sponsored Enterprises
Securities Sold Under Agreements to Repurchase
Securities Sold under Agreements to Repurchase	231,539	4,790
Maturity After 3 Years
Securities Sold Under Agreements to Repurchase
Securities Sold under Agreements to Repurchase	175,490	575,490
Maturity After 3 Years | Debt Securities Issued by States and Political Subdivisions
Securities Sold Under Agreements to Repurchase
Securities Sold under Agreements to Repurchase	490	490
Maturity After 3 Years | Residential - Government Agencies
Securities Sold Under Agreements to Repurchase
Securities Sold under Agreements to Repurchase	13,602	83,599
Maturity After 3 Years | Residential - U.S. Government-Sponsored Enterprises
Securities Sold Under Agreements to Repurchase
Securities Sold under Agreements to Repurchase	$ 161,398	$ 491,401

Balance Sheet Offsetting - Sche

Balance Sheet Offsetting - Schedule of Assets and Liabilities Subject to an Enforceable Master Netting Arrangement or Repurchase Agreements (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Liabilities:
Repurchase Agreements, Gross Amounts of Recognized Liabilities	$ 450,490	$ 600,590
Repurchase Agreements, Gross Amounts Offset in the Statements of Condition	0	0
Repurchase Agreements, Net Amounts of Liabilities Presented in the Statements of Condition	450,490	600,590
Securities Sold under Agreements to Repurchase, Net Amount Offset Against Collateral	0	0
Repurchase Agreements, Fair Value of Collateral Pledged	450,490	600,590
Private Institutions
Liabilities:
Repurchase Agreements, Gross Amounts of Recognized Liabilities	450,000	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	450,000	600,000
Securities Sold under Agreements to Repurchase, Net Amount Offset Against Collateral	0	0
Repurchase Agreements, Fair Value of Collateral Pledged	450,000	600,000
Government Entities
Liabilities:
Repurchase Agreements, Gross Amounts of Recognized Liabilities	490	590
Repurchase Agreements, Gross Amounts Offset in the Statements of Condition	0	0
Repurchase Agreements, Net Amounts of Liabilities Presented in the Statements of Condition	490	590
Securities Sold under Agreements to Repurchase, Net Amount Offset Against Collateral	0	0
Repurchase Agreements, Fair Value of Collateral Pledged	490	590
Interest Rate Swap Agreements | Institutional Counterparties
Assets:
Gross Amounts of Recognized Assets	22	5
Gross Amounts Offset in the Statements of Condition	0	0
Net Amounts of Assets Presented in the Statements of Condition	22	5
Netting Adjustments per Master Netting Arrangements	22	5
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	8,297	17,202
Gross Amounts Offset in the Statements of Condition	0	0
Net Amounts of Liabilities Presented in the Statements of Condition	8,297	17,202
Derivative Liability, Netting Adjustments per Master Netting Arrangements	22	5
Derivative, Collateral, Right to Reclaim Securities	53,265	7,911
Derivative Liabilities, Net Amount	$ (44,990)	$ 9,286

Balance Sheet Offsetting - Sc_2

Balance Sheet Offsetting - Schedule of Assets and Liabilities Subject to an Enforceable Master Netting Arrangement or Repurchase Agreements (Parenthetical) (Details) - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Private Institutions
Offsetting Assets And Liabilities [Line Items]
Fair value of investment securities pledged	$ 538.1	$ 635.2
Government Entities
Offsetting Assets And Liabilities [Line Items]
Fair value of investment securities pledged	$ 1.5	$ 2.5

Accumulated Other Comprehensi_3

Accumulated Other Comprehensive Income (Loss) - AOCI Components Pre Post & Tax Effect (Details) - USD ($) $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Sep. 30, 2021	Sep. 30, 2020
Other Comprehensive Income (Loss), Before Tax:
Net Unrealized Gains (Losses) Arising During the Period	$ (10,263)			$ (6,771)			$ (75,360)	$ 60,177
(Gain) Loss on sale, before tax	(83)						(3,758)	(77)
Amortization of Unrealized Holding (Gains) Losses on HTM Securities	87			103			593	289
Net Unrealized Gains (Losses) on Investment Securities	(10,259)			(6,668)			(78,525)	60,389
Amortization of Net Actuarial Losses (Gains)	662			570			1,985	1,711
Amortization of Prior Service Credit	(62)			(61)			(185)	(184)
Defined Benefit Plans, Net	600			509			1,800	1,527
Other Comprehensive Income (Loss)	(9,659)			(6,159)			(76,725)	61,916
Other Comprehensive Income (Loss), Tax Effect:
Net Unrealized Gains (Losses) Arising During the Period	(2,719)			(1,795)			(19,954)	15,945
(Gain) Loss on Sale, Tax Effect	(22)						(1,014)	(21)
Amortization of Unrealized Holding (Gains) Losses on HTM Securities	23			27			157	76
Net Unrealized Gains (Losses) on Investment Securities	(2,718)			(1,768)			(20,811)	16,000
Amortization of Net Actuarial Losses (Gains)	175			151			525	454
Amortization of Prior Service Credit	(16)			(16)			(49)	(49)
Defined Benefit Plans, Net	159			135			476	405
Other Comprehensive Income (Loss)	(2,559)			(1,633)			(20,335)	16,405
Other Comprehensive Income (Loss), Net of Tax:
Net Unrealized Gains (Losses) Arising During the Period	(7,544)			(4,976)			(55,406)	44,232
(Gain) Loss on Sale	(61)						(2,744)	(56)
Amortization of Unrealized Holding (Gains) Losses on HTM Securities	64			76			436	213
Net Unrealized Gains (Losses) on Investment Securities	(7,541)			(4,900)			(57,714)	44,389
Amortization of Net Actuarial Losses (Gains)	487			419			1,460	1,257
Amortization of Prior Service Credit	(46)			(45)			(136)	(135)
Defined Benefit Plans, Net	441			374			1,324	1,122
Total Other Comprehensive Income (Loss)	$ (7,100)	$ 319	$ (49,609)	$ (4,526)	$ 8,104	$ 41,933	$ (56,390)	$ 45,511

Accumulated Other Comprehensi_4

Accumulated Other Comprehensive Income (Loss) - Change in AOCI Components Net of Tax (Details) - USD ($) $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Sep. 30, 2021	Sep. 30, 2020
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance at Beginning of Period	$ 1,583,531	$ 1,360,221	$ 1,374,507	$ 1,352,082	$ 1,327,929	$ 1,286,832	$ 1,374,507	$ 1,286,832
Total Other Comprehensive Income (Loss)	(7,100)	319	(49,609)	(4,526)	8,104	41,933	(56,390)	45,511
Balance at End of Period	1,597,109	1,583,531	1,360,221	1,361,739	1,352,082	1,327,929	1,597,109	1,361,739
Unrealized Gains and Losses on Net Investment Securities | Available-for-sale Securities
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance at Beginning of Period	950		51,495	57,511		8,359	51,495	8,359
Other Comprehensive Income (Loss) Before Reclassifications	(7,544)			(4,976)			(55,406)	44,232
Amounts Reclassified from Accumulated Other Comprehensive Income (Loss)	(61)			0			(2,744)	(56)
Total Other Comprehensive Income (Loss)	(7,605)			(4,976)			(58,150)	44,176
Balance at End of Period	(6,655)	950		52,535	57,511		(6,655)	52,535
Unrealized Gains and Losses on Net Investment Securities | Held-to-maturity Securities
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance at Beginning of Period	(51)		(423)	(578)		(715)	(423)	(715)
Other Comprehensive Income (Loss) Before Reclassifications	0			0			0	0
Amounts Reclassified from Accumulated Other Comprehensive Income (Loss)	64			76			436	213
Total Other Comprehensive Income (Loss)	64			76			436	213
Balance at End of Period	13	(51)		(502)	(578)		13	(502)
Defined Benefit Plans
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance at Beginning of Period	(42,367)		(43,250)	(38,008)		(38,756)	(43,250)	(38,756)
Other Comprehensive Income (Loss) Before Reclassifications	0			0			0	0
Amounts Reclassified from Accumulated Other Comprehensive Income (Loss)	441			374			1,324	1,122
Total Other Comprehensive Income (Loss)	441			374			1,324	1,122
Balance at End of Period	(41,926)	(42,367)		(37,634)	(38,008)		(41,926)	(37,634)
Accumulated Other Comprehensive Income (Loss)
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance at Beginning of Period	(41,468)	(41,787)	7,822	18,925	10,821	(31,112)	7,822	(31,112)
Other Comprehensive Income (Loss) Before Reclassifications	(7,544)			(4,976)			(55,406)	44,232
Amounts Reclassified from Accumulated Other Comprehensive Income (Loss)	444			450			(984)	1,279
Total Other Comprehensive Income (Loss)	(7,100)	319	(49,609)	(4,526)	8,104	41,933	(56,390)	45,511
Balance at End of Period	$ (48,568)	$ (41,468)	$ (41,787)	$ 14,399	$ 18,925	$ 10,821	$ (48,568)	$ 14,399

Accumulated Other Comprehensi_5

Accumulated Other Comprehensive Income (Loss) - AOCI Reclass to IS (Details) - USD ($) $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Sep. 30, 2021	Sep. 30, 2020
Reclassification Out of Accumulated Other Comprehensive Income [Line Items]
Provision for Income Tax	$ (20,025)			$ (9,511)			$ (59,035)	$ (26,731)
Net Income	62,053	$ 67,533	$ 59,949	37,840	$ 38,908	$ 34,742	189,535	111,490
Salaries and Benefits	(56,447)			(51,951)			(168,859)	(157,129)
Reclassification out of Accumulated Other Comprehensive Income
Reclassification Out of Accumulated Other Comprehensive Income [Line Items]
Net Income	(444)			(450)			984	(1,279)
Reclassification out of Accumulated Other Comprehensive Income | Amortization of Unrealized Gains(Losses) of Investment Securities Transferred from AFS to HTM
Reclassification Out of Accumulated Other Comprehensive Income [Line Items]
Interest Income	(87)			(103)			(593)	(289)
Provision for Income Tax	23			27			157	76
Net Income	(64)			(76)			(436)	(213)
Reclassification out of Accumulated Other Comprehensive Income | Sale of Investment Securities Available-for-Sale
Reclassification Out of Accumulated Other Comprehensive Income [Line Items]
Provision for Income Tax	(22)			0			(1,014)	(21)
Net Income	61			0			2,744	56
Sale of Investment Securities Available-for-Sale	83			0			3,758	77
Reclassification out of Accumulated Other Comprehensive Income | Prior Service Credit
Reclassification Out of Accumulated Other Comprehensive Income [Line Items]
Salaries and Benefits	62			62			185	185
Reclassification out of Accumulated Other Comprehensive Income | Net Actuarial Losses
Reclassification Out of Accumulated Other Comprehensive Income [Line Items]
Salaries and Benefits	(662)			(571)			(1,985)	(1,712)
Reclassification out of Accumulated Other Comprehensive Income | Amortization of Defined Benefit Plan Items
Reclassification Out of Accumulated Other Comprehensive Income [Line Items]
Provision for Income Tax	159			135			476	405
Net Income	(441)			(374)			(1,324)	(1,122)
Salaries and Benefits	$ (600)			$ (509)			$ (1,800)	$ (1,527)

Earnings Per Common Share - Sch

Earnings Per Common Share - Schedule of Reconciliation of Weighted Average Number of Common Shares Outstanding for Computing Diluted Earnings Per Share and Antidilutive Stock Options and Restricted Stock Outstanding (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Numerator:
Net Income Available to Common Shareholders	$ 61,047	$ 37,840	$ 188,529	$ 111,490
Denominator:
Weighted Average Common Shares Outstanding - Basic	39,881,437	39,745,120	39,870,450	39,710,252
Dilutive Effect of Equity Based Awards (in shares)	199,482	124,015	218,449	162,154
Weighted Average Common Shares Outstanding - Diluted	40,080,919	39,869,135	40,088,899	39,872,406
Earnings Per Common Share:
Basic	$ 1.53	$ 0.95	$ 4.73	$ 2.81
Diluted	$ 1.52	$ 0.95	$ 4.70	$ 2.80
Antidilutive Stock Options and Restricted Stock Outstanding (in shares)	47,087	108,207	44,217	106,140

Business Segments - Additional

Business Segments - Additional Information (Details)	9 Months Ended
	Sep. 30, 2021branchatm
Business segment financial information
Federal and state effective tax rate used for segment reporting	26.00%
Consumer Banking
Business segment financial information
Number of branch locations through which products and services are delivered to customers | branch	54
Number of ATM's through which products and services are delivered to customers | atm	303

Business Segments - Selected Bu

Business Segments - Selected Business Segment Financial Information (Details) - USD ($) $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Business segment financial information
Net Interest Income	$ 126,819			$ 124,166			$ 370,902	$ 376,823
Provision for Credit Losses	(10,400)			28,600			(40,800)	102,600
Net Interest Income (Loss) After Provision for Credit Losses	137,219			95,566			411,702	274,223
Noninterest Income	41,378			41,734			128,779	139,151
Noninterest Expense	(96,519)			(89,949)			(291,911)	(275,153)
Income (Loss) Before Provision for Income Taxes	82,078			47,351			248,570	138,221
Provision for Income Taxes	(20,025)			(9,511)			(59,035)	(26,731)
Net Income	62,053	$ 67,533	$ 59,949	37,840	$ 38,908	$ 34,742	189,535	111,490
Total Assets	22,965,383			20,109,489			22,965,383	20,109,489	$ 20,603,651
Consumer Banking
Business segment financial information
Net Interest Income	72,062			73,868			212,991	221,003
Provision for Credit Losses	1,235			(1,372)			5,088	8,215
Net Interest Income (Loss) After Provision for Credit Losses	70,827			75,240			207,903	212,788
Noninterest Income	32,046			31,776			98,344	93,309
Noninterest Expense	(71,377)			(69,408)			(222,426)	(210,744)
Income (Loss) Before Provision for Income Taxes	31,496			37,608			83,821	95,353
Provision for Income Taxes	(8,001)			(9,627)			(20,840)	(24,235)
Net Income	23,495			27,981			62,981	71,118
Total Assets	7,530,513			7,383,822			7,530,513	7,383,822
Commercial Banking
Business segment financial information
Net Interest Income	50,088			47,797			146,269	144,253
Provision for Credit Losses	(42)			(85)			205	(819)
Net Interest Income (Loss) After Provision for Credit Losses	50,130			47,882			146,064	145,072
Noninterest Income	7,906			7,672			22,339	26,483
Noninterest Expense	(15,924)			(15,430)			(47,343)	(47,552)
Income (Loss) Before Provision for Income Taxes	42,112			40,124			121,060	124,003
Provision for Income Taxes	(10,373)			(9,784)			(29,634)	(30,278)
Net Income	31,739			30,340			91,426	93,725
Total Assets	5,087,831			5,027,836			5,087,831	5,027,836
Treasury and Other
Business segment financial information
Net Interest Income	4,669			2,501			11,642	11,567
Provision for Credit Losses	(11,593)			30,057			(46,093)	95,204
Net Interest Income (Loss) After Provision for Credit Losses	16,262			(27,556)			57,735	(83,637)
Noninterest Income	1,426			2,286			8,096	19,359
Noninterest Expense	(9,218)			(5,111)			(22,142)	(16,857)
Income (Loss) Before Provision for Income Taxes	8,470			(30,381)			43,689	(81,135)
Provision for Income Taxes	(1,651)			9,900			(8,561)	27,782
Net Income	6,819			(20,481)			35,128	(53,353)
Total Assets	$ 10,347,039			$ 7,697,831			$ 10,347,039	$ 7,697,831

Derivative Financial Instrume_3

Derivative Financial Instruments - Schedule of the Notional Amount and Fair Value of the Derivative Financial Instruments (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Interest Rate Lock Commitments
Derivative [Line Items]
Notional Amount	$ 48,993	$ 102,881
Fair Value	1,222	4,947
Forward Commitments
Derivative [Line Items]
Notional Amount	60,163	158,759
Fair Value	213	(740)
Receive Fixed / Pay Variable Swap
Derivative [Line Items]
Notional Amount	1,440,485	1,362,778
Fair Value	38,162	90,130
Pay Fixed / Receive Variable Swap
Derivative [Line Items]
Notional Amount	1,440,485	1,362,778
Fair Value	(8,275)	(17,197)
Foreign Exchange Contracts
Derivative [Line Items]
Notional Amount	97,172	90,587
Fair Value	(645)	866
Visa Conversion Rate Swap Agreement
Derivative [Line Items]
Notional Amount	135,735	133,286
Fair Value	$ 0	$ 0

Derivative Financial Instrume_4

Derivative Financial Instruments - Derivative Financial Instruments, their Fair Values, and Balance Sheet Location (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Derivatives Fair Value [Line Items]
Asset Derivatives	$ 48,721	$ 96,167
Liability Derivatives	18,044	18,161
Interest Rate Lock Commitments
Derivatives Fair Value [Line Items]
Asset Derivatives	1,222	4,947
Liability Derivatives	0	0
Forward Commitments
Derivatives Fair Value [Line Items]
Asset Derivatives	227	0
Liability Derivatives	14	740
Interest Rate Swap Agreements
Derivatives Fair Value [Line Items]
Asset Derivatives	47,211	90,342
Liability Derivatives	17,324	17,409
Foreign Exchange Contracts
Derivatives Fair Value [Line Items]
Asset Derivatives	61	878
Liability Derivatives	$ 706	$ 12

Derivative Financial Instrume_5

Derivative Financial Instruments - Derivative Financial Instruments and the Amount and Location of the Net Gains or Losses Recognized in the Statements of Income (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Derivative Instruments Gain Loss [Line Items]
Net gains (losses) recognized in the statements of income	$ 4,578	$ 7,350	$ 14,493	$ 25,348
Interest Rate Lock Commitments | Mortgage Banking Income
Derivative Instruments Gain Loss [Line Items]
Net gains (losses) recognized in the statements of income	2,083	4,903	6,927	15,556
Forward Commitments | Mortgage Banking Income
Derivative Instruments Gain Loss [Line Items]
Net gains (losses) recognized in the statements of income	(53)	(595)	1,598	(3,652)
Interest Rate Swap Agreements | Other Noninterest Income
Derivative Instruments Gain Loss [Line Items]
Net gains (losses) recognized in the statements of income	2,147	2,575	4,848	12,041
Foreign Exchange Contracts | Other Noninterest Income
Derivative Instruments Gain Loss [Line Items]
Net gains (losses) recognized in the statements of income	$ 401	$ 467	$ 1,120	$ 1,403

Derivative Financial Instrume_6

Derivative Financial Instruments - Additional Information (Details) - USD ($)	Sep. 30, 2021	Dec. 31, 2020
Derivative [Line Items]
Liability derivatives	$ 18,044,000	$ 18,161,000
Interest Rate Swap Agreements
Derivative [Line Items]
Net liability positions, aggregate fair value	8,300,000	17,200,000
Liability derivatives	17,324,000	17,409,000
Visa Class B Restricted Securities
Derivative [Line Items]
Liability derivatives	$ 0	$ 0

Commitments, Contingencies, a_3

Commitments, Contingencies, and Guarantees - Credit Commitments (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Credit Commitments [Line Items]
Credit Commitments	$ 3,115,800	$ 2,897,820
Unfunded Commitments to Extend Credit
Credit Commitments [Line Items]
Credit Commitments	2,973,153	2,787,123
Standby Letters of Credit
Credit Commitments [Line Items]
Credit Commitments	125,932	100,186
Commercial Letters of Credit
Credit Commitments [Line Items]
Credit Commitments	$ 16,715	$ 10,511

Fair Value of Assets and Liab_3

Fair Value of Assets and Liabilities - Balances of Assets and Liabilities Measured at Fair Value on Recurring Basis (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Assets:
Available-for-Sale: Fair Value	$ 4,353,520	$ 3,791,689
Loans Held for Sale	21,965	82,565
Debt Securities Issued by States and Political Subdivisions
Assets:
Available-for-Sale: Fair Value	21,068	24,840
Debt Securities Issued by Government-Sponsored Enterprises
Assets:
Available-for-Sale: Fair Value	1,555	1,062
Debt Securities Issued by Corporations
Assets:
Available-for-Sale: Fair Value	387,874	224,605
Residential - Government Agencies
Assets:
Available-for-Sale: Fair Value	1,417,183	1,594,815
Residential - U.S. Government-Sponsored Enterprises
Assets:
Available-for-Sale: Fair Value	2,200,052	1,518,283
Commercial - Government Agencies
Assets:
Available-for-Sale: Fair Value	180,924	253,839
Mortgage-Backed Securities
Assets:
Available-for-Sale: Fair Value	3,798,159	3,366,937
Fair Value, Measurements, Recurring
Assets:
Available-for-Sale: Fair Value	4,353,520	3,791,689
Loans Held for Sale	21,965	82,565
Mortgage Servicing Rights	826	958
Other Assets	55,167	53,410
Derivatives	48,721	96,167
Total Assets Measured at Fair Value on a Recurring Basis	4,480,199	4,024,789
Liabilities:
Derivatives	18,044	18,161
Total Liabilities Measured at Fair Value on a Recurring Basis	18,044	18,161
Fair Value, Measurements, Recurring | Debt Securities Issued by the U.S. Treasury and Government Agencies
Assets:
Available-for-Sale: Fair Value	144,864	174,245
Fair Value, Measurements, Recurring | Debt Securities Issued by States and Political Subdivisions
Assets:
Available-for-Sale: Fair Value	21,068	24,840
Fair Value, Measurements, Recurring | Debt Securities Issued by Government-Sponsored Enterprises
Assets:
Available-for-Sale: Fair Value	1,555	1,062
Fair Value, Measurements, Recurring | Debt Securities Issued by Corporations
Assets:
Available-for-Sale: Fair Value	387,874	224,605
Fair Value, Measurements, Recurring | Residential - Government Agencies
Assets:
Available-for-Sale: Fair Value	1,417,183	1,594,815
Fair Value, Measurements, Recurring | Residential - U.S. Government-Sponsored Enterprises
Assets:
Available-for-Sale: Fair Value	2,200,052	1,518,283
Fair Value, Measurements, Recurring | Commercial - Government Agencies
Assets:
Available-for-Sale: Fair Value	180,924	253,839
Fair Value, Measurements, Recurring | Mortgage-Backed Securities
Assets:
Available-for-Sale: Fair Value	3,798,159	3,366,937
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets or Liabilities (Level 1)
Assets:
Available-for-Sale: Fair Value	751	921
Loans Held for Sale	0	0
Mortgage Servicing Rights	0	0
Other Assets	55,167	53,410
Derivatives	0	0
Total Assets Measured at Fair Value on a Recurring Basis	55,918	54,331
Liabilities:
Derivatives	0	0
Total Liabilities Measured at Fair Value on a Recurring Basis	0	0
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets or Liabilities (Level 1) | Debt Securities Issued by the U.S. Treasury and Government Agencies
Assets:
Available-for-Sale: Fair Value	751	921
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets or Liabilities (Level 1) | Debt Securities Issued by States and Political Subdivisions
Assets:
Available-for-Sale: Fair Value	0	0
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets or Liabilities (Level 1) | Debt Securities Issued by Government-Sponsored Enterprises
Assets:
Available-for-Sale: Fair Value	0	0
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets or Liabilities (Level 1) | Debt Securities Issued by Corporations
Assets:
Available-for-Sale: Fair Value	0	0
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets or Liabilities (Level 1) | Residential - Government Agencies
Assets:
Available-for-Sale: Fair Value	0	0
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets or Liabilities (Level 1) | Residential - U.S. Government-Sponsored Enterprises
Assets:
Available-for-Sale: Fair Value	0	0
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets or Liabilities (Level 1) | Commercial - Government Agencies
Assets:
Available-for-Sale: Fair Value	0	0
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets or Liabilities (Level 1) | Mortgage-Backed Securities
Assets:
Available-for-Sale: Fair Value	0	0
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2)
Assets:
Available-for-Sale: Fair Value	4,352,769	3,790,768
Loans Held for Sale	21,965	82,565
Mortgage Servicing Rights	0	0
Other Assets	0	0
Derivatives	288	878
Total Assets Measured at Fair Value on a Recurring Basis	4,375,022	3,874,211
Liabilities:
Derivatives	720	752
Total Liabilities Measured at Fair Value on a Recurring Basis	720	752
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Debt Securities Issued by the U.S. Treasury and Government Agencies
Assets:
Available-for-Sale: Fair Value	144,113	173,324
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Debt Securities Issued by States and Political Subdivisions
Assets:
Available-for-Sale: Fair Value	21,068	24,840
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Debt Securities Issued by Government-Sponsored Enterprises
Assets:
Available-for-Sale: Fair Value	1,555	1,062
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Debt Securities Issued by Corporations
Assets:
Available-for-Sale: Fair Value	387,874	224,605
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Residential - Government Agencies
Assets:
Available-for-Sale: Fair Value	1,417,183	1,594,815
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Residential - U.S. Government-Sponsored Enterprises
Assets:
Available-for-Sale: Fair Value	2,200,052	1,518,283
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Commercial - Government Agencies
Assets:
Available-for-Sale: Fair Value	180,924	253,839
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Mortgage-Backed Securities
Assets:
Available-for-Sale: Fair Value	3,798,159	3,366,937
Fair Value, Measurements, Recurring | Significant Other Unobservable Inputs (Level 3)
Assets:
Available-for-Sale: Fair Value	0	0
Loans Held for Sale	0	0
Mortgage Servicing Rights	826	958
Other Assets	0	0
Derivatives	48,433	95,289
Total Assets Measured at Fair Value on a Recurring Basis	49,259	96,247
Liabilities:
Derivatives	17,324	17,409
Total Liabilities Measured at Fair Value on a Recurring Basis	17,324	17,409
Fair Value, Measurements, Recurring | Significant Other Unobservable Inputs (Level 3) | Debt Securities Issued by the U.S. Treasury and Government Agencies
Assets:
Available-for-Sale: Fair Value	0	0
Fair Value, Measurements, Recurring | Significant Other Unobservable Inputs (Level 3) | Debt Securities Issued by States and Political Subdivisions
Assets:
Available-for-Sale: Fair Value	0	0
Fair Value, Measurements, Recurring | Significant Other Unobservable Inputs (Level 3) | Debt Securities Issued by Government-Sponsored Enterprises
Assets:
Available-for-Sale: Fair Value	0	0
Fair Value, Measurements, Recurring | Significant Other Unobservable Inputs (Level 3) | Debt Securities Issued by Corporations
Assets:
Available-for-Sale: Fair Value	0	0
Fair Value, Measurements, Recurring | Significant Other Unobservable Inputs (Level 3) | Residential - Government Agencies
Assets:
Available-for-Sale: Fair Value	0	0
Fair Value, Measurements, Recurring | Significant Other Unobservable Inputs (Level 3) | Residential - U.S. Government-Sponsored Enterprises
Assets:
Available-for-Sale: Fair Value	0	0
Fair Value, Measurements, Recurring | Significant Other Unobservable Inputs (Level 3) | Commercial - Government Agencies
Assets:
Available-for-Sale: Fair Value	0	0
Fair Value, Measurements, Recurring | Significant Other Unobservable Inputs (Level 3) | Mortgage-Backed Securities
Assets:
Available-for-Sale: Fair Value	$ 0	$ 0

Fair Value of Assets and Liab_4

Fair Value of Assets and Liabilities - Changes in Level 3 Assets and Liabilities Measured at Fair Value on Recurring Basis (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation Calculation Roll Forward
Fair Value, Mortgage Servicing Rights, Beginning Balance	$ 875	$ 1,068	$ 958	$ 1,126
Fair Value, Mortgage Servicing Rights, Realized and Unrealized Net Gains (Losses) Included in Net Income	(49)	(50)	(132)	(108)
Fair Value, Mortgage Servicing Rights, Ending Balance	826	1,018	826	1,018
Fair Value, Mortgage Service Rights, Total Unrealized Net Gains (Losses) Included in Net Income Related to Assets Still Held	0	0	0	0
Fair Value Net Derivative Asset Liability Measured On Recurring Basis Unobservable Input Reconciliation Roll Forward
Fair Value, Net Derivative Assets and Liabilities, Beginning Balance	37,957	88,995	77,880	22,573
Fair Value, Net Derivative Assets and Liabilities, Realized and Unrealized Net Gains (Losses) Included in Net Income	2,095	4,909	7,008	15,372
Fair Value, Net Derivative Assets and Liabilities, Transfers to Loans Held for Sale	(3,068)	(4,242)	(10,652)	(13,521)
Variation margin payments for swap liabilities	(5,875)	(1,840)	(43,127)	63,398
Fair Value, Net Derivative Assets and Liabilities, Ending Balance	31,109	87,822	31,109	87,822
Fair Value, Net Derivative Assets and Liabilities,Total Unrealized Net Gains (Losses) Included in Net Income Related to Assets Still Held	$ 31,109	$ 87,822	$ 31,109	$ 87,822

Fair Value of Assets and Liab_5

Fair Value of Assets and Liabilities - Summary of the Significant Unobservable Inputs (Details) - Significant Other Unobservable Inputs (Level 3) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2021USD ($)	Dec. 31, 2020USD ($)
Discounted Cash Flow | Interest Rate Swap Agreements
Level3 Assets And Liabilities Fair Value And Fair Value Unobservable Inputs [Line Items]
Interest Rate Derivative Instruments Not Designated as Hedging Instruments at Fair Value, Net	$ 29,887	$ 72,933
Discounted Cash Flow | Weighted Average Constant Prepayment Rate (as a percent)
Level3 Assets And Liabilities Fair Value And Fair Value Unobservable Inputs [Line Items]
Mortgage Servicing Rights, Fair Value Inputs	0.0667	0.0581
Discounted Cash Flow | Weighted Average Credit Factor (as a percent) | Interest Rate Swap Agreements
Level3 Assets And Liabilities Fair Value And Fair Value Unobservable Inputs [Line Items]
Interest Rate Derivative Instruments Not Designated as Hedging Instruments, Fair Value Inputs	0.0014	0.0029
Discounted Cash Flow | Mortgage Servicing Rights
Level3 Assets And Liabilities Fair Value And Fair Value Unobservable Inputs [Line Items]
Mortgage Servicing Rights, at Fair Value	$ 22,099	$ 19,652
Discounted Cash Flow | Mortgage Servicing Rights | Weighted Average Constant Prepayment Rate (as a percent)
Level3 Assets And Liabilities Fair Value And Fair Value Unobservable Inputs [Line Items]
Mortgage Servicing Rights, Fair Value Inputs	0.1150	0.1442
Pricing Model | Interest Rate Lock Commitments
Level3 Assets And Liabilities Fair Value And Fair Value Unobservable Inputs [Line Items]
Interest Rate Derivative Instruments Not Designated as Hedging Instruments at Fair Value, Net	$ 1,222	$ 4,947
Pricing Model | Weighted Average Closing Ratio (as a percent) | Interest Rate Lock Commitments
Level3 Assets And Liabilities Fair Value And Fair Value Unobservable Inputs [Line Items]
Interest Rate Derivative Instruments Not Designated as Hedging Instruments, Fair Value Inputs	0.9284	0.9076
Minimum | Discounted Cash Flow | Weighted Average Constant Prepayment Rate (as a percent)
Level3 Assets And Liabilities Fair Value And Fair Value Unobservable Inputs [Line Items]
Mortgage Servicing Rights, Fair Value Inputs	0.0565	0.0569
Minimum | Discounted Cash Flow | Weighted Average Credit Factor (as a percent) | Interest Rate Swap Agreements
Level3 Assets And Liabilities Fair Value And Fair Value Unobservable Inputs [Line Items]
Interest Rate Derivative Instruments Not Designated as Hedging Instruments, Fair Value Inputs	0	0
Minimum | Discounted Cash Flow | Mortgage Servicing Rights
Level3 Assets And Liabilities Fair Value And Fair Value Unobservable Inputs [Line Items]
Fair Value Assumption, Date of Securitization or Asset-backed Financing Arrangement, Transferor's Continuing Involvement, Servicing Assets or Liabilities, Discount Rate	8.13%	8.71%
Minimum | Pricing Model | Weighted Average Closing Ratio (as a percent) | Interest Rate Lock Commitments
Level3 Assets And Liabilities Fair Value And Fair Value Unobservable Inputs [Line Items]
Interest Rate Derivative Instruments Not Designated as Hedging Instruments, Fair Value Inputs	0.8410	0.8410
Maximum | Discounted Cash Flow | Weighted Average Constant Prepayment Rate (as a percent)
Level3 Assets And Liabilities Fair Value And Fair Value Unobservable Inputs [Line Items]
Mortgage Servicing Rights, Fair Value Inputs	0.0674	0.0628
Maximum | Discounted Cash Flow | Weighted Average Credit Factor (as a percent) | Interest Rate Swap Agreements
Level3 Assets And Liabilities Fair Value And Fair Value Unobservable Inputs [Line Items]
Interest Rate Derivative Instruments Not Designated as Hedging Instruments, Fair Value Inputs	0.0049	0.0049
Maximum | Discounted Cash Flow | Mortgage Servicing Rights
Level3 Assets And Liabilities Fair Value And Fair Value Unobservable Inputs [Line Items]
Fair Value Assumption, Date of Securitization or Asset-backed Financing Arrangement, Transferor's Continuing Involvement, Servicing Assets or Liabilities, Discount Rate	14.43%	15.89%
Maximum | Pricing Model | Weighted Average Closing Ratio (as a percent) | Interest Rate Lock Commitments
Level3 Assets And Liabilities Fair Value And Fair Value Unobservable Inputs [Line Items]
Interest Rate Derivative Instruments Not Designated as Hedging Instruments, Fair Value Inputs	1	0.9900

Fair Value of Assets and Liab_6

Fair Value of Assets and Liabilities - Schedule of Assets Measured at Fair Value on Nonrecurring Basis (Details) - Significant Other Unobservable Inputs (Level 3) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Net Carrying Amount	$ 21,273	$ 18,694
Valuation Allowance	$ (2,107)	$ (3,892)

Fair Value of Assets and Liab_7

Fair Value of Assets and Liabilities - Schedule of Difference between Aggregate Fair Value and Aggregate Unpaid Principal Balance (Details) - Residential mortgage loans held for sale - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Fair Value Option Quantitative Disclosures [Line Items]
Aggregate Fair Value	$ 21,965	$ 82,565
Aggregate Unpaid Principal	21,376	78,577
Aggregate Fair Value Less Aggregate Unpaid Principal	$ 589	$ 3,988

Fair Value of Assets and Liab_8

Fair Value of Assets and Liabilities - Schedule of Carrying Amount, Fair Value, and Fair Value Hierarchy of Financial Instruments (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Financial Instruments - Assets
Held-to-Maturity: Fair Value	$ 4,895,763	$ 3,348,693
Carrying Amount
Financial Instruments - Assets
Held-to-Maturity: Fair Value	4,899,880	3,262,727
Loans	11,718,951	11,536,011
Financial Instruments - Liabilities
Time Deposits	1,072,915	1,662,063
Securities Sold Under Agreements to Repurchase	450,490	600,590
Other Debt		50,000
Fair Value
Financial Instruments - Assets
Held-to-Maturity: Fair Value	4,895,763	3,348,693
Loans	11,962,539	12,019,151
Financial Instruments - Liabilities
Time Deposits	1,074,210	1,667,774
Securities Sold Under Agreements to Repurchase	477,228	649,039
Other Debt		51,546
Quoted Prices in Active Markets for Identical Assets or Liabilities (Level 1) | Fair Value
Financial Instruments - Assets
Held-to-Maturity: Fair Value	131,558	7,500
Loans	0	0
Financial Instruments - Liabilities
Time Deposits	0	0
Securities Sold Under Agreements to Repurchase	0	0
Other Debt		0
Significant Other Observable Inputs (Level 2) | Fair Value
Financial Instruments - Assets
Held-to-Maturity: Fair Value	4,764,205	3,341,193
Loans	0	0
Financial Instruments - Liabilities
Time Deposits	1,074,210	1,667,774
Securities Sold Under Agreements to Repurchase	477,228	649,039
Other Debt		51,546
Significant Other Unobservable Inputs (Level 3) | Fair Value
Financial Instruments - Assets
Held-to-Maturity: Fair Value	0	0
Loans	11,962,539	12,019,151
Financial Instruments - Liabilities
Time Deposits	0	0
Securities Sold Under Agreements to Repurchase	$ 0	0
Other Debt		$ 0