Bank of Hawaii (BOH) 10-Q 25 Oct 23 2023 Q3 Quarterly report Financial data

Cover page

Cover page - shares	9 Months Ended
	Sep. 30, 2023	Oct. 17, 2023
Entity Information [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Sep. 30, 2023
Document Transition Report	false
Entity File Number	1-6887
Entity Registrant Name	BANK OF HAWAII CORPORATION
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		39,750,569
Document Fiscal Year Focus	2023
Document Fiscal Period Focus	Q3
Entity Central Index Key	0000046195
Current Fiscal Year End Date	--12-31
Amendment Flag	false
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
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, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Interest Income
Interest and Fees on Loans and Leases	$ 151,245	$ 115,013	$ 432,287	$ 311,115
Income on Investment Securities
Available-for-Sale	23,552	16,995	70,746	52,079
Held-to-Maturity	22,838	20,243	70,161	57,782
Deposits	18	10	63	19
Funds Sold	12,828	2,335	22,589	3,181
Other	1,464	322	4,182	877
Total Interest Income	211,945	154,918	600,028	425,053
Interest Expense
Deposits	72,153	10,296	163,726	16,184
Securities Sold Under Agreements to Repurchase	4,034	2,745	14,847	8,311
Funds Purchased		40	888	99
Short-Term Borrowings			5,713	92
Other Debt	14,821	182	33,614	547
Total Interest Expense	91,008	13,263	218,788	25,233
Net Interest Income	120,937	141,655	381,240	399,820
Provision for Credit Losses	2,000	0	6,500	(8,000)
Net Interest Income After Provision for Credit Losses	118,937	141,655	374,740	407,820
Noninterest Income
Trust and Asset Management	10,548	10,418	32,453	33,151
Mortgage Banking	1,059	1,002	3,239	4,989
Service Charges on Deposit Accounts	7,843	7,526	23,167	22,107
Fees, Exchange, and Other Service Charges	13,824	13,863	41,782	41,008
Investment Securities Losses, Net	(6,734)	(2,147)	(9,836)	(4,987)
Annuity and Insurance	1,156	1,034	3,465	2,695
Bank-Owned Life Insurance	2,749	2,486	8,467	7,493
Other	19,889	(3,522)	31,589	9,913
Total Noninterest Income	50,334	30,660	134,326	116,369
Noninterest Expense
Salaries and Benefits	58,825	59,938	180,088	177,631
Net Occupancy	10,327	10,186	30,190	29,942
Net Equipment	9,477	9,736	30,425	28,432
Data Processing	4,706	4,616	13,888	13,783
Professional Fees	3,846	3,799	12,380	10,599
FDIC Insurance	3,361	1,680	9,768	4,772
Other	15,059	15,794	44,817	47,403
Total Noninterest Expense	105,601	105,749	321,556	312,562
Income Before Provision for Income Taxes	63,670	66,566	187,510	211,627
Provision for Income Taxes	15,767	13,765	46,704	47,130
Net Income	47,903	52,801	140,806	164,497
Preferred Stock Dividends	1,969	1,969	5,908	5,908
Net Income Available to Common Shareholders	$ 45,934	$ 50,832	$ 134,898	$ 158,589
Basic Earnings Per Common Share	$ 1.17	$ 1.28	$ 3.44	$ 4
Diluted Earnings Per Common Share	1.17	1.28	3.42	3.98
Dividends Declared Per Common Share	$ 0.7	$ 0.7	$ 2.1	$ 2.1
Basic Weighted Average Common Shares	39,274,626	39,567,047	39,264,450	39,670,409
Diluted Weighted Average Common Shares	39,420,531	39,758,209	39,392,433	39,848,795

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income (Loss) (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Statement of Comprehensive Income [Abstract]
Net Income	$ 47,903	$ 52,801	$ 140,806	$ 164,497
Other Comprehensive Loss, Net of Tax:
Net Unrealized Losses on Investment Securities	(18,264)	(79,600)	(7,205)	(382,371)
Defined Benefit Plans	84	354	252	1,059
Total Other Comprehensive Income (Loss)	(18,180)	(79,246)	(6,953)	(381,312)
Comprehensive Income (Loss)	$ 29,723	$ (26,445)	$ 133,853	$ (216,815)

Consolidated Statements of Cond

Consolidated Statements of Condition (Unaudited) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Assets
Interest-Bearing Deposits in Other Banks	$ 4,676	$ 3,724
Funds Sold	386,086	81,364
Investment Securities
Available-for-Sale	2,387,324	2,844,823
Held-to-Maturity (Fair Value of $4,104,469 and $4,615,393)	5,088,013	5,414,139
Loans Held for Sale	1,450	1,035
Loans and Leases	13,919,491	13,646,420
Allowance for Credit Losses	(145,263)	(144,439)
Net Loans and Leases	13,774,228	13,501,981
Total Earning Assets	21,641,777	21,847,066
Cash and Due From Banks	261,464	316,679
Premises and Equipment, Net	196,094	206,777
Operating Lease Right-of-Use Assets	86,896	92,307
Accrued Interest Receivable	65,541	61,002
Foreclosed Real Estate	1,040	1,040
Mortgage Servicing Rights	21,273	22,619
Goodwill	31,517	31,517
Bank-Owned Life Insurance	458,260	453,882
Other Assets	785,923	573,988
Total Assets	23,549,785	23,606,877
Deposits
Noninterest-Bearing Demand	5,687,442	6,714,982
Interest-Bearing Demand	3,925,469	4,232,567
Savings	8,530,384	7,962,410
Time	2,659,014	1,705,737
Total Deposits	20,802,309	20,615,696
Securities Sold Under Agreements to Repurchase	150,490	725,490
Other Debt	560,217	410,294
Operating Lease Liabilities	95,453	100,526
Retirement Benefits Payable	26,074	26,991
Accrued Interest Payable	33,434	9,698
Taxes Payable	6,965	7,104
Other Liabilities	511,003	394,083
Total Liabilities	22,185,945	22,289,882
Commitments and Contingencies (Note 12)
Shareholders’ Equity
Preferred Stock ($.01 par value; authorized 180,000 shares; issued and outstanding: September 30, 2023 and December 31, 2022 - 180,000)	180,000	180,000
Common Stock ($.01 par value; authorized 500,000,000 shares; issued / outstanding: September 30, 2023 -58,767,820 / 39,748,700 and December 31, 2022 -58,733,625 / 39,835,750)	583	582
Capital Surplus	632,425	620,578
Accumulated Other Comprehensive Loss	(441,611)	(434,658)
Retained Earnings	2,108,702	2,055,912
Treasury Stock, at Cost (Shares: September 30, 2023 - 19,019,120 and December 31, 2022 - 18,897,875)	(1,116,259)	(1,105,419)
Total Shareholders’ Equity	1,363,840	1,316,995
Total Liabilities and Shareholders’ Equity	$ 23,549,785	$ 23,606,877

Consolidated Statements of Co_2

Consolidated Statements of Condition (Unaudited) (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Statement of Financial Position [Abstract]
Held-to-Maturity: Fair Value	$ 4,104,469	$ 4,615,393
Preferred Stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred Stock, authorized (in shares)	180,000	180,000
Preferred Stock, issued (in shares)	180,000	180,000
Preferred Stock, outstanding (in shares)	180,000	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)	58,767,820	58,733,625
Common Stock, outstanding (in shares)	39,748,700	39,835,750
Treasury Stock (in shares)	19,019,120	18,897,875

Consolidated Statements of Shar

Consolidated Statements of Shareholders' Equity (Unaudited) - USD ($) $ in Thousands	Total	Preferred Stock	Common Stock	Capital Surplus	Accum.Other Comprehensive Income (Loss)	Retained Earnings	Treasury Stock
Balance at Beginning of Period at Dec. 31, 2021	$ 1,611,611	$ 180,000	$ 581	$ 602,508	$ (66,382)	$ 1,950,375	$ (1,055,471)
Beginning Balance (in shares) at Dec. 31, 2021		180,000	40,253,193
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	54,834					54,834
Other Comprehensive Income (Loss)	(179,771)				(179,771)
Share-Based Compensation	4,010			4,010
Common Stock Issued under Purchase and Equity Compensation Plans	2,395		$ 1	543		(185)	2,036
Common Stock Issued under Purchase and Equity Compensation Plans (in shares)			197,783
Common Stock Repurchased	(13,960)						(13,960)
Common Stock Repurchased (in shares)			(162,611)
Cash Dividends Declared Common Stock (per share)	(28,265)					(28,265)
Cash Dividends Declared Preferred Stock	(1,969)					(1,969)
Balance at End of Period at Mar. 31, 2022	1,448,885	$ 180,000	$ 582	607,061	(246,153)	1,974,790	(1,067,395)
Ending Balance (in shares) at Mar. 31, 2022		180,000	40,288,365
Balance at Beginning of Period at Dec. 31, 2021	1,611,611	$ 180,000	$ 581	602,508	(66,382)	1,950,375	(1,055,471)
Beginning Balance (in shares) at Dec. 31, 2021		180,000	40,253,193
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	164,497
Other Comprehensive Income (Loss)	(381,312)				(381,312)
Balance at End of Period at Sep. 30, 2022	1,282,384	$ 180,000	$ 582	615,985	(447,694)	2,024,641	(1,091,130)
Ending Balance (in shares) at Sep. 30, 2022		180,000	40,011,473
Balance at Beginning of Period at Mar. 31, 2022	1,448,885	$ 180,000	$ 582	607,061	(246,153)	1,974,790	(1,067,395)
Beginning Balance (in shares) at Mar. 31, 2022		180,000	40,288,365
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	56,862					56,862
Other Comprehensive Income (Loss)	(122,295)				(122,295)
Share-Based Compensation	4,162			4,162
Common Stock Issued under Purchase and Equity Compensation Plans	1,663			471		531	661
Common Stock Issued under Purchase and Equity Compensation Plans (in shares)			30,442
Common Stock Repurchased	(10,353)						(10,353)
Common Stock Repurchased (in shares)			(136,148)
Cash Dividends Declared Common Stock (per share)	(28,209)					(28,209)
Cash Dividends Declared Preferred Stock	(1,969)					(1,969)
Balance at End of Period at Jun. 30, 2022	1,348,746	$ 180,000	$ 582	611,694	(368,448)	2,002,005	(1,077,087)
Ending Balance (in shares) at Jun. 30, 2022		180,000	40,182,659
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	52,801					52,801
Other Comprehensive Income (Loss)	(79,246)				(79,246)
Share-Based Compensation	3,775			3,775
Common Stock Issued under Purchase and Equity Compensation Plans	1,617			516		(91)	1,192
Common Stock Issued under Purchase and Equity Compensation Plans (in shares)			19,741
Common Stock Repurchased	(15,235)						(15,235)
Common Stock Repurchased (in shares)			(190,927)
Cash Dividends Declared Common Stock (per share)	(28,105)					(28,105)
Cash Dividends Declared Preferred Stock	(1,969)					(1,969)
Balance at End of Period at Sep. 30, 2022	1,282,384	$ 180,000	$ 582	615,985	(447,694)	2,024,641	(1,091,130)
Ending Balance (in shares) at Sep. 30, 2022		180,000	40,011,473
Balance at Beginning of Period at Dec. 31, 2022	1,316,995	$ 180,000	$ 582	620,578	(434,658)	2,055,912	(1,105,419)
Beginning Balance (in shares) at Dec. 31, 2022		180,000	39,835,750
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	46,842					46,842
Other Comprehensive Income (Loss)	29,360				29,360
Share-Based Compensation	3,371			3,371
Common Stock Issued under Purchase and Equity Compensation Plans	1,568		$ 1	177		1,587	(197)
Common Stock Issued under Purchase and Equity Compensation Plans (in shares)			13,164
Common Stock Repurchased	(13,793)						(13,793)
Common Stock Repurchased (in shares)			(202,408)
Cash Dividends Declared Common Stock (per share)	(27,944)					(27,944)
Cash Dividends Declared Preferred Stock	(1,969)					(1,969)
Balance at End of Period at Mar. 31, 2023	1,354,430	$ 180,000	$ 583	624,126	(405,298)	2,074,428	(1,119,409)
Ending Balance (in shares) at Mar. 31, 2023		180,000	39,646,506
Balance at Beginning of Period at Dec. 31, 2022	1,316,995	$ 180,000	$ 582	620,578	(434,658)	2,055,912	(1,105,419)
Beginning Balance (in shares) at Dec. 31, 2022		180,000	39,835,750
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	140,806
Other Comprehensive Income (Loss)	(6,953)				(6,953)
Balance at End of Period at Sep. 30, 2023	1,363,840	$ 180,000	$ 583	632,425	(441,611)	2,108,702	(1,116,259)
Ending Balance (in shares) at Sep. 30, 2023		180,000	39,748,700
Balance at Beginning of Period at Mar. 31, 2023	1,354,430	$ 180,000	$ 583	624,126	(405,298)	2,074,428	(1,119,409)
Beginning Balance (in shares) at Mar. 31, 2023		180,000	39,646,506
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	46,061					46,061
Other Comprehensive Income (Loss)	(18,133)				(18,133)
Share-Based Compensation	4,301			4,301
Common Stock Issued under Purchase and Equity Compensation Plans	1,657			(225)		699	1,183
Common Stock Issued under Purchase and Equity Compensation Plans (in shares)			81,601
Common Stock Repurchased	(138)						(138)
Common Stock Repurchased (in shares)			(2,759)
Cash Dividends Declared Common Stock (per share)	(27,930)					(27,930)
Cash Dividends Declared Preferred Stock	(1,969)					(1,969)
Balance at End of Period at Jun. 30, 2023	1,358,279	$ 180,000	$ 583	628,202	(423,431)	2,091,289	(1,118,364)
Ending Balance (in shares) at Jun. 30, 2023		180,000	39,725,348
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	47,903					47,903
Other Comprehensive Income (Loss)	(18,180)				(18,180)
Share-Based Compensation	4,307			4,307
Common Stock Issued under Purchase and Equity Compensation Plans	1,575			(84)		(571)	2,230
Common Stock Issued under Purchase and Equity Compensation Plans (in shares)			26,275
Common Stock Repurchased	(125)						(125)
Common Stock Repurchased (in shares)			(2,923)
Cash Dividends Declared Common Stock (per share)	(27,950)					(27,950)
Cash Dividends Declared Preferred Stock	(1,969)					(1,969)
Balance at End of Period at Sep. 30, 2023	$ 1,363,840	$ 180,000	$ 583	$ 632,425	$ (441,611)	$ 2,108,702	$ (1,116,259)
Ending Balance (in shares) at Sep. 30, 2023		180,000	39,748,700

Consolidated Statements of Sh_2

Consolidated Statements of Shareholders' Equity (Unaudited) (Parenthetical) - $ / shares	3 Months Ended						9 Months Ended
	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Sep. 30, 2023	Sep. 30, 2022
Statement of Stockholders' Equity [Abstract]
Dividends Declared Per Common Share	$ 0.7	$ 0.7	$ 0.7	$ 0.7	$ 0.7	$ 0.7	$ 2.1	$ 2.1

Consolidated Statements of Cash

Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Operating Activities
Net Income	$ 140,806	$ 164,497
Adjustments to Reconcile Net Income to Net Cash Provided by Operating Activities:
Provision for Credit Losses	6,500	(8,000)
Depreciation and Amortization	16,219	15,947
Amortization of Deferred Loan and Lease Costs (Fees), Net	580	(501)
Amortization and Accretion of Premiums/Discounts on Investment Securities, Net	10,019	16,971
Amortization of Operating Lease Right-of-Use Assets	8,816	8,939
Share-Based Compensation	11,979	11,947
Benefit Plan Contributions	(1,474)	(1,236)
Deferred Income Taxes	(2,041)	(6,840)
Loss on Agreement to Sell Assets That Will Terminate Certain Leveraged Leases		6,918
Net Gains on Sales of Loans and Leases	(1,688)	(3,365)
Net Losses on Sales of Investment Securities	9,836	4,987
Proceeds from Sales of Loans Held for Sale	39,999	122,404
Originations of Loans Held for Sale	(40,734)	(95,024)
Net Tax (Deficiency) Benefits from Share-Based Compensation	(490)	158
Net Change in Other Assets and Other Liabilities	(73,757)	31,065
Net Cash Provided by Operating Activities	124,570	268,867
Investment Securities Available-for-Sale:
Proceeds from Prepayments and Maturities	407,947	597,452
Purchases	(396)	(556,813)
Investment Securities Held-to-Maturity:
Proceeds from Prepayments and Maturities	339,563	517,448
Purchases		(15,240)
Net Change in Loans and Leases	(277,860)	(1,070,567)
Purchases of Premises and Equipment	(5,536)	(24,805)
Net Cash Provided by (Used in) Investing Activities	463,718	(552,525)
Financing Activities
Net Change in Deposits	186,613	528,665
Net Change in Short-Term Borrowings	(575,000)	(25,000)
Proceeds from Long-Term Debt	1,350,000
Repayments of Long-Term Debt	(1,200,077)	(72)
Proceeds from Issuance of Common Stock	4,423	5,315
Repurchase of Common Stock	(14,056)	(39,548)
Cash Dividends Paid on Common Stock	(83,824)	(84,579)
Cash Dividends Paid on Preferred Stock	(5,908)	(5,908)
Net Cash (Used in) Provided by Financing Activities	(337,829)	378,873
Net Change in Cash and Cash Equivalents	250,459	95,215
Cash and Cash Equivalents at Beginning of Period	401,767	560,434
Cash and Cash Equivalents at End of Period	652,226	655,649
Supplemental Information
Cash Paid for Interest	195,051	24,326
Cash Paid for Income Taxes	39,471	38,467
Non-Cash Investing and Financing Activities:
Transfer of Investment Securities from Available-for-Sale to Held-to-Maturity		1,275,043
Transfer from Loans to Foreclosed Real Estate	567
Transfer from Loans to Loans Held for Sale		$ 380
Transfer from Loans Held for Sale to Loans	$ 569

Pay vs Performance Disclosure

Pay vs Performance Disclosure - USD ($) $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Sep. 30, 2023	Sep. 30, 2022
Pay vs Performance Disclosure
Net Income (Loss)	$ 47,903	$ 46,061	$ 46,842	$ 52,801	$ 56,862	$ 54,834	$ 140,806	$ 164,497

Insider Trading Arrangements

Insider Trading Arrangements	9 Months Ended
	Sep. 30, 2023
Trading Arrangements, by Individual
Rule 10b5-1 Arrangement Adopted	false
Non-Rule 10b5-1 Arrangement Adopted	false
Rule 10b5-1 Arrangement Terminated	false
Non-Rule 10b5-1 Arrangement Terminated	false

Summary of Significant Accounti

Summary of Significant Accounting Policies	9 Months Ended
	Sep. 30, 2023
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 Hawai‘i Corporation is a trade name of Bank of Hawaii Corporation, and along with its subsidiaries (collectively, the “Company”), provides a broad range of financial products and services to businesses, consumers and governments in Hawaii and the West Pacific. 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”), doing business as Bank of Hawai‘i. 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 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, 2022. Significant changes to accounting policies from those disclosed in our audited consolidated financial statements and related notes included in the Company’s Annual Report on Form 10-K are presented below. In January 2023 , the Company adopted ASU 2022-02, “Financial Instruments - Credit Losses (Topic 326): Troubled Debt Restructurings and Vintage Disclosures” (“ASU 2022-02”), which eliminated the accounting guidance for troubled debt restructurings (“TDRs”) while enhancing disclosure requirements for certain loan refinancing and restructurings by creditors when a borrower is experiencing financial difficulty. This guidance was applied on a prospective basis. Upon adoption of this guidance, the Company no longer establishes a specific reserve for modifications made on January 1, 2023 and forward to borrowers experiencing financial difficulty. Instead, these modifications are included in their respective cohort and a historical loss rate is applied to the current loan balance to arrive at the quantitative baseline portion of the Allowance for Credit Losses. Modifications to borrowers experiencing financial difficulty may include interest rate reductions, principal or interest forgiveness, forbearances, term extensions, and other actions intended to minimize economic loss and to avoid foreclosure or repossession of collateral. Accounting Standard Pending Adoption In March 2023, the FASB issued ASU 2023-02, “Investments – Equity Method and Joint Ventures (Topic 323): Accounting for Investments in Tax Credit Structures Using the Proportional Amortization Method.” ASU 2023-02 permits reporting entities to elect to account for their tax equity investments, regardless of the tax credit program from which the income tax credits are received, using the proportional amortization method if certain conditions are met. ASU 2023-02 is effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2023. ASU 2023-02 is not expected to have a material impact on the Company’s consolidated financial statements.

Cash and Cash Equivalents

Cash and Cash Equivalents	9 Months Ended
	Sep. 30, 2023
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 c onsolidated statement of condition: (dollars in thousands) September 30, Interest-Bearing Deposits in Other Banks $ 4,676 Funds Sold 386,086 Cash and Due From Banks 261,464 Total Cash and Cash Equivalents $ 652,226

Investment Securities

Investment Securities	9 Months Ended
	Sep. 30, 2023
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, 2023, and December 31, 2022, were as follows: (dollars in thousands) Amortized Gross Gross Fair Value September 30, 2023 Available-for-Sale: Debt Securities Issued by the U.S. Treasury and Government Agencies $ 228,181 $ 408 $ ( 15,133 ) $ 213,456 Debt Securities Issued by States and Political Subdivisions 73,722 — ( 13,120 ) 60,602 Debt Securities Issued by U.S. Government-Sponsored Enterprises 1,757 — ( 117 ) 1,640 Debt Securities Issued by Corporations 706,693 7 ( 57,560 ) 649,140 Mortgage-Backed Securities: Residential - Government Agencies 740,652 101 ( 108,806 ) 631,947 Residential - U.S. Government-Sponsored Enterprises 841,441 — ( 142,092 ) 699,349 Commercial - Government Agencies or Sponsored Agencies 159,647 — ( 28,457 ) 131,190 Total Mortgage-Backed Securities 1,741,740 101 ( 279,355 ) 1,462,486 Total $ 2,752,093 $ 516 $ ( 365,285 ) $ 2,387,324 Held-to-Maturity: Debt Securities Issued by the U.S. Treasury and Government Agencies $ 131,710 $ — $ ( 20,301 ) $ 111,409 Debt Securities Issued by Corporations 11,788 — ( 2,582 ) 9,206 Mortgage-Backed Securities: Residential - Government Agencies 1,712,317 — ( 330,120 ) 1,382,197 Residential - U.S. Government-Sponsored Enterprises 2,794,307 5 ( 519,138 ) 2,275,174 Commercial - Government Agencies or Sponsored Agencies 437,891 — ( 111,408 ) 326,483 Total Mortgage-Backed Securities 4,944,515 5 ( 960,666 ) 3,983,854 Total $ 5,088,013 $ 5 $ ( 983,549 ) $ 4,104,469 December 31, 2022 Available-for-Sale: Debt Securities Issued by the U.S. Treasury and Government Agencies $ 248,335 $ 638 $ ( 15,067 ) $ 233,906 Debt Securities Issued by States and Political Subdivisions 107,689 158 ( 12,582 ) 95,265 Debt Securities Issued by U.S. Government-Sponsored Enterprises 48,807 — ( 179 ) 48,628 Debt Securities Issued by Corporations 850,585 809 ( 56,736 ) 794,658 Mortgage-Backed Securities: Residential - Government Agencies 828,798 245 ( 96,215 ) 732,828 Residential - U.S. Government-Sponsored Enterprises 919,980 1 ( 126,110 ) 793,871 Commercial - Government Agencies or Sponsored Agencies 168,242 — ( 22,575 ) 145,667 Total Mortgage-Backed Securities 1,917,020 246 ( 244,900 ) 1,672,366 Total $ 3,172,436 $ 1,851 $ ( 329,464 ) $ 2,844,823 Held-to-Maturity: Debt Securities Issued by the U.S. Treasury and Government Agencies $ 131,619 $ — $ ( 18,202 ) $ 113,417 Debt Securities Issued by Corporations 17,014 — ( 2,534 ) 14,480 Mortgage-Backed Securities: Residential - Government Agencies 1,848,239 35 ( 294,047 ) 1,554,227 Residential - U.S. Government-Sponsored Enterprises 2,968,322 8 ( 397,055 ) 2,571,275 Commercial - Government Agencies or Sponsored Agencies 448,945 — ( 86,951 ) 361,994 Total Mortgage-Backed Securities 5,265,506 43 ( 778,053 ) 4,487,496 Total $ 5,414,139 $ 43 $ ( 798,789 ) $ 4,615,393 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 $ 9.9 million and $ 11.7 million as of September 30, 2023, and December 31, 2022, respectively. For held-to-maturity (“HTM”) debt securities, AIR totaled $ 10.1 million and $ 9.2 million as of September 30, 2023, and December 31, 2022, 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, 2023. Debt securities issued by government agencies (Small Business Administration securities) and mortgage-backed securities are disclosed separately in the table below as these investment securities may prepay prior to their scheduled contractual maturity dates. (dollars in thousands) Amortized Fair Value Available-for-Sale: Due in One Year or Less $ 1,798 $ 1,768 Due After One Year Through Five Years 332,832 309,375 Due After Five Years Through Ten Years 598,290 537,433 Due After Ten Years 6,380 4,866 939,300 853,442 Debt Securities Issued by Government Agencies 71,053 71,396 Mortgage-Backed Securities: Residential - Government Agencies 740,652 631,947 Residential - U.S. Government-Sponsored Enterprises 841,441 699,349 Commercial - Government Agencies or Sponsored Agencies 159,647 131,190 Total Mortgage-Backed Securities 1,741,740 1,462,486 Total $ 2,752,093 $ 2,387,324 Held-to-Maturity: Due in One Year or Less 966 943 Due After One Year Through Five Years 82,244 71,390 Due After Five Year Through Ten Years 60,288 48,282 143,498 120,615 Mortgage-Backed Securities: Residential - Government Agencies 1,712,317 1,382,197 Residential - U.S. Government-Sponsored Enterprises 2,794,307 2,275,174 Commercial - Government Agencies or Sponsored Agencies 437,891 326,483 Total Mortgage-Backed Securities 4,944,515 3,983,854 Total $ 5,088,013 $ 4,104,469 Investment securities with carrying values of $ 7.2 billion and $ 4.1 billion as of September 30, 2023, and December 31, 2022, 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 losses from the sales of investment securities for the three and nine months ended September 30, 2023, and September 30, 2022: Three Months Ended Nine Months Ended (dollars in thousands) 2023 2022 2023 2022 Gross Gains on Sales of Investment Securities $ 145 $ — $ 145 $ — Gross Losses on Sales of Investment Securities ( 6,879 ) ( 2,147 ) ( 9,981 ) ( 4,987 ) Total Losses on Sales of Investment Securities $ ( 6,734 ) $ ( 2,147 ) $ ( 9,836 ) $ ( 4,987 ) Although the Company had the ability to hold its investment securities until maturity, during the three months ended September 30, 2023, it made the strategic decision to reduce the size of its AFS portfolio by selling various corporate and municipal bonds which resulted in a realized loss of $ 4.6 million. 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 Fair Value Gross Fair Value Gross September 30, 2023 Available-for-Sale: Debt Securities Issued by the U.S. Treasury $ 8,272 $ ( 24 ) $ 150,513 $ ( 15,109 ) $ 158,785 $ ( 15,133 ) Debt Securities Issued by States 236 ( 8 ) 60,152 ( 13,112 ) 60,388 ( 13,120 ) Debt Securities Issued by U.S. Government- — — 1,639 ( 117 ) 1,639 ( 117 ) Debt Securities Issued by Corporations 322,435 ( 2,565 ) 301,697 ( 54,995 ) 624,132 ( 57,560 ) Mortgage-Backed Securities: Residential - Government Agencies 11,455 ( 70 ) 616,352 ( 108,736 ) 627,807 ( 108,806 ) Residential - U.S. Government-Sponsored Enterprises 330 ( 7 ) 699,020 ( 142,085 ) 699,350 ( 142,092 ) Commercial - Government Agencies or Sponsored Agencies — — 131,189 ( 28,457 ) 131,189 ( 28,457 ) Total Mortgage-Backed Securities 11,785 ( 77 ) 1,446,561 ( 279,278 ) 1,458,346 ( 279,355 ) Total $ 342,728 $ ( 2,674 ) $ 1,960,562 $ ( 362,611 ) $ 2,303,290 $ ( 365,285 ) December 31, 2022 Available-for-Sale: Debt Securities Issued by the U.S. Treasury $ 28,574 $ ( 1,118 ) $ 127,841 $ ( 13,949 ) $ 156,415 $ ( 15,067 ) Debt Securities Issued by States 11,341 ( 1,240 ) 49,985 ( 11,342 ) 61,326 ( 12,582 ) Debt Securities Issued by U.S. Government- 47,825 ( 108 ) 803 ( 71 ) 48,628 ( 179 ) Debt Securities Issued by Corporations 438,225 ( 7,995 ) 284,350 ( 48,741 ) 722,575 ( 56,736 ) Mortgage-Backed Securities: Residential - Government Agencies 386,809 ( 30,492 ) 340,824 ( 65,723 ) 727,633 ( 96,215 ) Residential - U.S. Government-Sponsored Enterprises 194,684 ( 22,294 ) 598,986 ( 103,816 ) 793,670 ( 126,110 ) Commercial - Government Agencies or Sponsored Agencies 98,694 ( 13,247 ) 46,973 ( 9,328 ) 145,667 ( 22,575 ) Total Mortgage-Backed Securities 680,187 ( 66,033 ) 986,783 ( 178,867 ) 1,666,970 ( 244,900 ) Total $ 1,206,152 $ ( 76,494 ) $ 1,449,762 $ ( 252,970 ) $ 2,655,914 $ ( 329,464 ) The Company does not believe that the AFS debt securities that were in an unrealized loss position as of September 30, 2023 , which were comprised of 399 individual securities, represent a credit loss impairment. As of September 30, 2023, and December 31, 2022, the gross unrealized loss positions were primarily related to mortgage-backed securities 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. Total gross unrealized losses were attributable to changes in interest rates, relative to when the investment securities were purchased, and not due to the credit quality of the investment securities. 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, 2023. Interest income from taxable and non-taxable investment securities for the three and nine months ended September 30, 2023, and September 30, 2022, were as follows: Three Months Ended Nine Months Ended (dollars in thousands) 2023 2022 2023 2022 Taxable $ 46,367 $ 37,231 $ 140,718 $ 109,830 Non-Taxable 23 7 189 31 Total Interest Income from Investment Securities $ 46,390 $ 37,238 $ 140,907 $ 109,861 As of September 30, 2023, and December 31, 2022, 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, December 31, Federal Home Loan Bank of Des Moines Stock $ 32,000 $ 26,000 Federal Reserve Bank Stock 27,400 27,065 Total $ 59,400 $ 53,065 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.

Loans and Leases and the Allowa

Loans and Leases and the Allowance for Credit Losses	9 Months Ended
	Sep. 30, 2023
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, 2023, and December 31, 2022: (dollars in thousands) September 30, December 31, Commercial Commercial and Industrial $ 1,569,572 $ 1,389,066 Paycheck Protection Program 12,529 19,579 Commercial Mortgage 3,784,339 3,725,542 Construction 251,507 260,825 Lease Financing 61,522 69,491 Total Commercial 5,679,469 5,464,503 Consumer Residential Mortgage 4,699,140 4,653,072 Home Equity 2,285,974 2,225,950 Automobile 856,113 870,396 Other 2 398,795 432,499 Total Consumer 8,240,022 8,181,917 Total Loans and Leases $ 13,919,491 $ 13,646,420 1. Comprised of other revolving credit, installment, and lease financing. Most 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 located in the State of Hawaii. Net gain related to sales of residential mortgage loans, recorded as a component of mortgage banking income were less than $ 0.1 million for the three months ended September 30, 2023, and September 30, 2022 , and $ 0.3 million and $ 0.2 million for the nine months ended September 30, 2023, and September 30, 2022, respectively. The Company elected to exclude AIR from the amortized cost basis of loans disclosed throughout this footnote. As of September 30, 2023, and December 31, 2022 , AIR for loans totaled $ 45.0 million and $ 40.1 million, respectively, and is included in the “accrued interest receivable” line item on the Company’s consolidated statements of condition. 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, 2023, and September 30, 2022. (dollars in thousands) Commercial Consumer Total Three Months Ended September 30, 2023 Allowance for Credit Losses: Balance at Beginning of Period $ 63,941 $ 81,426 $ 145,367 Loans and Leases Charged-Off ( 294 ) ( 3,323 ) ( 3,617 ) Recoveries on Loans and Leases Previously Charged-Off 72 1,496 1,568 Net Loans and Leases Recovered (Charged-Off) ( 222 ) ( 1,827 ) ( 2,049 ) Provision for Credit Losses 4,283 ( 2,338 ) 1,945 Balance at End of Period $ 68,002 $ 77,261 $ 145,263 Nine Months Ended September 30, 2023 Allowance for Credit Losses: Balance at Beginning of Period $ 63,900 $ 80,539 $ 144,439 Loans and Leases Charged-Off ( 758 ) ( 10,679 ) ( 11,437 ) Recoveries on Loans and Leases Previously Charged-Off 225 5,118 5,343 Net Loans and Leases Recovered (Charged-Off) ( 533 ) ( 5,561 ) ( 6,094 ) Provision for Credit Losses 4,635 2,283 6,918 Balance at End of Period $ 68,002 $ 77,261 $ 145,263 Three Months Ended September 30, 2022 Allowance for Credit Losses: Balance at Beginning of Period $ 61,826 $ 86,686 $ 148,512 Loans and Leases Charged-Off ( 147 ) ( 2,718 ) ( 2,865 ) Recoveries on Loans and Leases Previously Charged-Off 45 1,673 1,718 Net Loans and Leases Recovered (Charged-Off) ( 102 ) ( 1,045 ) ( 1,147 ) Provision for Credit Losses 157 ( 1,086 ) ( 929 ) Balance at End of Period $ 61,881 $ 84,555 $ 146,436 Nine Months Ended September 30, 2022 Allowance for Credit Losses: Balance at Beginning of Period $ 64,950 $ 92,871 $ 157,821 Loans and Leases Charged-Off ( 729 ) ( 9,390 ) ( 10,119 ) Recoveries on Loans and Leases Previously Charged-Off 465 6,390 6,855 Net Loans and Leases Recovered (Charged-Off) ( 264 ) ( 3,000 ) ( 3,264 ) Provision for Credit Losses ( 2,805 ) ( 5,316 ) ( 8,121 ) Balance at End of Period $ 61,881 $ 84,555 $ 146,436 The wildfires that occurred on Maui in August 2023 caused widespread destruction on the island of Maui. The Company’s Allowance as of September 30, 2023, considered the impact the wildfires had on the local community, while also giving the necessary consideration to the insurance coverage and value of any underlying collateral, in addition to the improved economic outlook for the rest of the State of Hawaii. 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 are typically monitored and risk-rated 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: a) the home equity loan is in a first lien position and the current loan-to-value ratio is 60 % or less; or b) 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, 2023. Term Loans by Origination Year (dollars in thousands) 2023 2 2022 2021 2020 2019 Prior Revolving Revolving Total Loans September 30, 2023 Commercial Commercial and Industrial Pass $ 277,427 $ 271,993 $ 242,363 $ 152,581 $ 42,673 $ 82,144 $ 369,945 $ 483 $ 1,439,609 Special Mention 42,774 5,157 - - 695 - 39,956 - 88,582 Classified 11,911 2,784 7,960 6,638 - 8,245 3,828 15 41,381 Total Commercial and Industrial $ 332,112 $ 279,934 $ 250,323 $ 159,219 $ 43,368 $ 90,389 $ 413,729 $ 498 $ 1,569,572 Paycheck Protection Program Pass $ - $ - $ 2,445 $ 10,084 $ - $ - $ - $ - $ 12,529 Total Paycheck Protection Program $ - $ - $ 2,445 $ 10,084 $ - $ - $ - $ - $ 12,529 Commercial Mortgage Pass $ 756,211 $ 1,004,342 $ 713,794 $ 441,404 $ 247,429 $ 435,257 $ 42,790 $ - $ 3,641,227 Special Mention 30,463 61,654 - 3,908 307 13,551 - - 109,883 Classified 2,996 162 1,342 13,139 233 15,357 - - 33,229 Total Commercial Mortgage $ 789,670 $ 1,066,158 $ 715,136 $ 458,451 $ 247,969 $ 464,165 $ 42,790 $ - $ 3,784,339 Construction Pass $ 20,606 $ 132,155 $ 76,109 $ 2,820 $ 16,101 $ 297 $ 3,419 $ - $ 251,507 Total Construction $ 20,606 $ 132,155 $ 76,109 $ 2,820 $ 16,101 $ 297 $ 3,419 $ - $ 251,507 Lease Financing Pass $ 7,046 $ 13,905 $ 14,570 $ 9,160 $ 6,787 $ 8,646 $ - $ - $ 60,114 Classified 627 54 125 102 - 500 - - 1,408 Total Lease Financing $ 7,673 $ 13,959 $ 14,695 $ 9,262 $ 6,787 $ 9,146 $ - $ - $ 61,522 Total Commercial $ 1,150,061 $ 1,492,206 $ 1,058,708 $ 639,836 $ 314,225 $ 563,997 $ 459,938 $ 498 $ 5,679,469 Consumer Residential Mortgage Pass $ 267,172 $ 799,565 $ 1,257,550 $ 988,296 $ 306,197 $ 1,078,785 $ - $ - $ 4,697,565 Classified - - - - - 1,575 - - 1,575 Total Residential Mortgage $ 267,172 $ 799,565 $ 1,257,550 $ 988,296 $ 306,197 $ 1,080,360 $ - $ - $ 4,699,140 Home Equity Pass $ - $ - $ - $ - $ - $ 44 $ 2,242,699 $ 40,870 $ 2,283,613 Classified - - - - - - 1,291 1,070 2,361 Total Home Equity $ - $ - $ - $ - $ - $ 44 $ 2,243,990 $ 41,940 $ 2,285,974 Automobile Pass $ 205,059 $ 326,054 $ 164,714 $ 73,234 $ 55,196 $ 31,464 $ - $ - $ 855,721 Classified 39 59 149 56 6 83 - - 392 Total Automobile $ 205,098 $ 326,113 $ 164,863 $ 73,290 $ 55,202 $ 31,547 $ - $ - $ 856,113 Other 1 Pass $ 74,075 $ 150,228 $ 99,977 $ 16,432 $ 21,154 $ 34,871 $ 1,415 $ - $ 398,152 Classified 118 158 161 21 85 100 - - 643 Total Other $ 74,193 $ 150,386 $ 100,138 $ 16,453 $ 21,239 $ 34,971 $ 1,415 $ - $ 398,795 Total Consumer $ 546,463 $ 1,276,064 $ 1,522,551 $ 1,078,039 $ 382,638 $ 1,146,922 $ 2,245,405 $ 41,940 $ 8,240,022 Total Loans and Leases $ 1,696,524 $ 2,768,270 $ 2,581,259 $ 1,717,875 $ 696,863 $ 1,710,919 $ 2,705,343 $ 42,438 $ 13,919,491 1. Comprised of other revolving credit, installment, and lease financing. 2. Loans reported as Special Mention or Classified in the 2023 column represent renewal of loans that originated in an earlier period. For the nine months ended September 30, 2023 , $ 7.4 million of revolving loans 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, 2022. Term Loans by Origination Year (dollars in thousands) 2022 2021 2020 2019 2018 Prior Revolving Revolving Total Loans December 31, 2022 Commercial Commercial and Industrial Pass $ 360,748 $ 348,300 $ 224,264 $ 59,127 $ 46,799 $ 71,906 $ 257,349 $ 155 $ 1,368,648 Special Mention 273 - - - 96 92 1,357 - 1,818 Classified 7,295 91 1,030 - 1,644 6,267 2,252 21 18,600 Total Commercial and Industrial $ 368,316 $ 348,391 $ 225,294 $ 59,127 $ 48,539 $ 78,265 $ 260,958 $ 176 $ 1,389,066 Paycheck Protection Program Pass $ - $ 5,359 $ 14,220 $ - $ - $ - $ - $ - $ 19,579 Total Paycheck Protection Program $ - $ 5,359 $ 14,220 $ - $ - $ - $ - $ - $ 19,579 Commercial Mortgage Pass $ 1,182,831 $ 771,375 $ 691,054 $ 283,553 $ 131,055 $ 494,924 $ 48,771 $ - $ 3,603,563 Special Mention 29,707 37,657 28,105 - 1,482 5,014 - - 101,965 Classified 182 1,964 8,545 624 - 8,699 - - 20,014 Total Commercial Mortgage $ 1,212,720 $ 810,996 $ 727,704 $ 284,177 $ 132,537 $ 508,637 $ 48,771 $ - $ 3,725,542 Construction Pass $ 124,507 $ 69,992 $ 37,133 $ 16,838 $ - $ 297 $ 12,058 $ - $ 260,825 Total Construction $ 124,507 $ 69,992 $ 37,133 $ 16,838 $ - $ 297 $ 12,058 $ - $ 260,825 Lease Financing Pass $ 16,959 $ 17,823 $ 11,408 $ 9,768 $ 6,379 $ 6,444 $ - $ - $ 68,781 Classified - - - - 710 - - - 710 Total Lease Financing $ 16,959 $ 17,823 $ 11,408 $ 9,768 $ 7,089 $ 6,444 $ - $ - $ 69,491 Total Commercial $ 1,722,502 $ 1,252,561 $ 1,015,759 $ 369,910 $ 188,165 $ 593,643 $ 321,787 $ 176 $ 5,464,503 Consumer Residential Mortgage Pass $ 827,909 $ 1,304,831 $ 1,035,285 $ 321,208 $ 138,214 $ 1,023,841 $ - $ - $ 4,651,288 Classified - - - - 552 1,232 - - 1,784 Total Residential Mortgage $ 827,909 $ 1,304,831 $ 1,035,285 $ 321,208 $ 138,766 $ 1,025,073 $ - $ - $ 4,653,072 Home Equity Pass $ - $ - $ - $ - $ - $ 890 $ 2,186,598 $ 36,114 $ 2,223,602 Classified - - - - - 25 1,105 1,218 2,348 Total Home Equity $ - $ - $ - $ - $ - $ 915 $ 2,187,703 $ 37,332 $ 2,225,950 Automobile Pass $ 405,440 $ 216,039 $ 100,608 $ 84,052 $ 45,301 $ 18,366 $ - $ - $ 869,806 Classified 121 260 23 43 92 51 - - 590 Total Automobile $ 405,561 $ 216,299 $ 100,631 $ 84,095 $ 45,393 $ 18,417 $ - $ - $ 870,396 Other 1 Pass $ 185,347 $ 124,759 $ 31,343 $ 39,902 $ 16,364 $ 9,853 $ 23,228 $ 1,020 $ 431,816 Classified 117 114 70 148 129 24 59 22 683 Total Other $ 185,464 $ 124,873 $ 31,413 $ 40,050 $ 16,493 $ 9,877 $ 23,287 $ 1,042 $ 432,499 Total Consumer $ 1,418,934 $ 1,646,003 $ 1,167,329 $ 445,353 $ 200,652 $ 1,054,282 $ 2,210,990 $ 38,374 $ 8,181,917 Total Loans and Leases $ 3,141,436 $ 2,898,564 $ 2,183,088 $ 815,263 $ 388,817 $ 1,647,925 $ 2,532,777 $ 38,550 $ 13,646,420 1. Comprised of other revolving credit, installment, and lease financing. For the year ended December 31, 2022 , $ 6.2 million of revolving loans were converted to term loans. 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, 2023, and December 31, 2022. (dollars in thousands) 30 - 59 60 - 89 Past Due Non- Total Current Total Non- 2 As of September 30, 2023 Commercial Commercial and Industrial $ 661 $ 453 $ — $ 43 $ 1,157 $ 1,568,415 $ 1,569,572 $ 43 Paycheck Protection Program — — — — — 12,529 12,529 — Commercial Mortgage — — — 2,996 2,996 3,781,343 3,784,339 2,996 Construction — — — — — 251,507 251,507 — Lease Financing — — — — — 61,522 61,522 — Total Commercial 661 453 — 3,039 4,153 5,675,316 5,679,469 3,039 Consumer Residential Mortgage 3,176 877 3,519 3,706 11,278 4,687,862 4,699,140 765 Home Equity 3,407 1,750 2,172 3,734 11,063 2,274,911 2,285,974 740 Automobile 10,072 1,089 393 — 11,554 844,559 856,113 — Other 1 2,311 1,036 643 — 3,990 394,805 398,795 — Total Consumer 18,966 4,752 6,727 7,440 37,885 8,202,137 8,240,022 1,505 Total $ 19,627 $ 5,205 $ 6,727 $ 10,479 $ 42,038 $ 13,877,453 $ 13,919,491 $ 4,544 As of December 31, 2022 Commercial Commercial and Industrial $ 252 $ 9 $ — $ 37 $ 298 $ 1,388,768 $ 1,389,066 $ 37 Paycheck Protection Program — — — — — 19,579 19,579 — Commercial Mortgage — — — 3,309 3,309 3,722,233 3,725,542 3,309 Construction — — — — — 260,825 260,825 — Lease Financing — — — — — 69,491 69,491 — Total Commercial 252 9 — 3,346 3,607 5,460,896 5,464,503 3,346 Consumer Residential Mortgage 3,016 721 2,429 4,239 10,405 4,642,667 4,653,072 1,729 Home Equity 1,639 960 1,673 4,022 8,294 2,217,656 2,225,950 664 Automobile 13,293 1,988 589 — 15,870 854,526 870,396 — Other 1 2,318 1,302 683 — 4,303 428,196 432,499 — Total Consumer 20,266 4,971 5,374 8,261 38,872 8,143,045 8,181,917 2,393 Total $ 20,518 $ 4,980 $ 5,374 $ 11,607 $ 42,479 $ 13,603,941 $ 13,646,420 $ 5,739 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, 2023, and December 31, 2022. September 30, 2023 December 31, 2022 (dollars in thousands) Non-accrual Non-accrual Total Non- Non-accrual Non-accrual Total Non- Commercial Commercial and Industrial $ 43 $ — $ 43 $ 37 $ — $ 37 Commercial Mortgage — 2,996 2,996 — 3,309 3,309 Total Commercial 43 2,996 3,039 37 3,309 3,346 Consumer Residential Mortgage 3,706 — 3,706 4,239 — 4,239 Home Equity 3,734 — 3,734 4,022 — 4,022 Total Consumer 7,440 — 7,440 8,261 — 8,261 Total $ 7,483 $ 2,996 $ 10,479 $ 8,298 $ 3,309 $ 11,607 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. Loan Modifications to Borrowers Experiencing Financial Difficulty Modifications to borrowers experiencing financial difficulty may include interest rate reductions, principal or interest forgiveness, forbearances, term extensions, and other actions intended to minimize economic loss and to avoid foreclosure or repossession of collateral. The following illustrates the most common loan modifications by loan classes offered by the Company that are required to be disclosed pursuant to the requirements of ASU 2022-02: Loan Classes Modification Types Commercial: Term extension, interest rate reductions, payment delay, or combination thereof. These modifications extend the term of the loan, lower the payment amount, or otherwise delay payments during a defined period for the purpose of providing borrowers additional time to return to compliance with the original loan term. Residential Mortgage/ Forbearance period greater than six months. These modifications require reduced or no payments during the forbearance period for the purpose of providing borrowers additional time to return to compliance with the original loan term. Residential Mortgage/ Term extension and rate adjustment. These modifications extend the term of the loan and provides for an adjustment to the interest rate, which reduces the monthly payment requirement. Automobile/ Term extension greater than three months. These modifications extend the term of the loan, which reduces the monthly payment requirement. The following table presents the amortized cost basis of loan modifications made to borrowers experiencing financial difficulty during three and nine months ended September 30, 2023. % Payment Term of Delay Extension and Total Interest and Interest Class of Term Rate Term Rate Payment Loans and (dollars in thousands) Extension Reduction Extension Reduction Delay Total Leases Three Months Ended September 30, 2023 Commercial Commercial and Industrial $ 19 $ — $ — $ — $ — $ 19 0.00 % Total Commercial 19 — — — — 19 0.00 % Consumer Residential Mortgage — — — — 715 715 0.02 % Automobile 3,231 — — — — 3,231 0.38 % Other 1 373 — — — — 373 0.09 % Total Consumer 3,604 — — — 715 4,319 0.05 % Total Loans and Leases $ 3,623 $ — $ — $ — $ 715 $ 4,338 0.03 % Nine Months Ended September 30, 2023 Commercial Commercial and Industrial $ 109 $ — $ 6,102 $ — $ — $ 6,211 0.40 % Commercial Mortgage — 946 — — — 946 0.02 % Total Commercial 109 946 6,102 — — 7,157 0.13 % Consumer Residential Mortgage 132 — — — 715 847 0.02 % Home Equity 136 — — — — 136 0.01 % Automobile 7,428 — — — — 7,428 0.87 % Other 1 732 — — — — 732 0.18 % Total Consumer 8,428 — — — 715 9,143 0.11 % Total Loans and Leases $ 8,537 $ 946 $ 6,102 $ — $ 715 $ 16,300 0.12 % 1 Comprised of other revolving credit, installment and lease financing. The following table presents the financial effect of loan modifications made to borrowers experiencing financial difficulty during the three and nine months ended September 30, 2023. Weighted-Average Weighted-Average Weighted-Average Months of Payment Interest Rate (dollars in thousands) Term Extension Deferral Reduction Three Months Ended September 30, 2023 Commercial Commercial and Industrial 31 $ — — % Commercial Mortgage — — 2.50 % Consumer Residential Mortgage — 5 — Home Equity — — — Automobile 22 — — Other 1 23 — — Nine Months Ended September 30, 2023 Commercial Commercial and Industrial 6 $ 1,159 — % Commercial Mortgage — — 2.50 Consumer Residential Mortgage 58 5 — Home Equity 60 — — Automobile 23 — — Other 1 22 — — 1 Comprised of other revolving credit, installment and lease financing. The following table presents the loan modifications made to borrowers experiencing financial difficulty that defaulted during the three and nine months ended September 30, 2023. Term Payment (dollars in thousands) Extension Delay Total Three Months Ended September 30, 2023 Consumer Residential Mortgage $ — $ 715 $ 715 Automobile 10 — 10 Total Consumer 10 715 725 Total Loans and Leases $ 10 $ 715 $ 725 Nine Months Ended September 30, 2023 Consumer Residential Mortgage $ — $ 715 $ 715 Automobile 140 — 140 Other 1 65 — 65 Total Consumer 205 715 920 Total Loans and Leases $ 205 $ 715 $ 920 1 Comprised of other revolving credit, installment and lease financing. The following table presents the aging analysis of loan modifications made to borrowers experiencing financial difficulty as of September 30, 2023. (dollars in thousands) Current 30 - 59 60 - 89 Past Due Non- Total As of September 30, 2023 Commercial Commercial and Industrial $ 6,121 $ 90 $ — $ — $ — $ 6,211 Commercial Mortgage 946 — — — — 946 Total Commercial 7,067 90 — — — 7,157 Consumer Residential Mortgage — — — — 847 847 Home Equity 136 — — — — 136 Automobile 6,505 793 102 28 — 7,428 Other 1 584 95 31 22 — 732 Total Consumer 7,225 888 133 50 847 9,143 Total Loans and Leases 14,292 $ 978 $ 133 $ 50 $ 847 $ 16,300 1 Comprised of other revolving credit, installment and lease financing. The following table presents by loan class and year of origination, the gross charge-offs recorded during the three and nine months ended September 30, 2023. (dollars in thousands) 2023 2022 2021 2020 2019 Prior Total Three Months Ended September 30, 2023 Commercial Commercial and Industrial $ 162 $ — $ — $ 84 $ — $ 48 $ 294 Total Commercial 162 — — 84 — 48 294 Consumer Residential Mortgage — — — — — — — Home Equity — — — — 13 — 13 Automobile 134 358 309 145 246 161 1,353 Other 1 455 510 360 114 238 280 1,957 Total Consumer 589 868 669 259 497 441 3,323 Total $ 751 $ 868 $ 669 $ 343 $ 497 $ 489 $ 3,617 Nine Months Ended September 30, 2023 Commercial Commercial and Industrial $ 347 $ 188 $ — $ 84 $ — $ 139 $ 758 Total Commercial 347 188 — 84 — 139 758 Consumer Residential Mortgage — — — — — 6 6 Home Equity — — — — 13 55 68 Automobile 134 1,229 1,053 481 610 802 4,309 Other 1 813 1,844 1,371 316 952 1,000 6,296 Total Consumer 947 3,073 2,424 797 1,575 1,863 10,679 Total $ 1,294 $ 3,261 $ 2,424 $ 881 $ 1,575 $ 2,002 $ 11,437 1 Comprised of other revolving credit, installment and lease financing. Foreclosure Proceedings Consumer mortgage loans collateralized by residential real estate property that are in the process of foreclosure totaled $ 4.7 million as of September 30, 2023 .

Mortgage Servicing Rights

Mortgage Servicing Rights	9 Months Ended
	Sep. 30, 2023
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 $ 2.6 billion as of September 30, 2023 , and $ 2.6 billion as of December 31, 2022. Substantially all of these loans were originated by the Company and sold to third parties on a non-recourse basis with servicing rights retained. These retained servicing rights are recorded as a servicing asset and are initially recorded at fair value (see Note 13 Fair Value of Assets and Liabilities for more information). Changes to the balance of mortgage servicing rights are recorded in mortgage banking income in the Company’s consolidated statements of income. The Company’s mortgage servicing activities include collecting principal, interest, and escrow payments from borrowers; making tax and insurance payments on behalf of borrowers; monitoring delinquencies and executing foreclosure proceedings; and accounting for and remitting principal and interest payments to investors. Servicing income, including late and ancillary fees, was $ 1.4 million and $ 1.5 million for the three months ended September 30, 2023, and September 30, 2022 , respectively, and $ 4.2 million and $ 4.5 million for the nine months ended September 30, 2023, and September 30, 2022, 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, 2023, and September 30, 2022, 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 Nine Months Ended (dollars in thousands) 2023 2022 2023 2022 Balance at Beginning of Period $ 695 $ 747 $ 717 $ 800 Change in Fair Value Due to Payoffs ( 10 ) ( 15 ) ( 32 ) ( 68 ) Balance at End of Period $ 685 $ 732 $ 685 $ 732 For the three and nine months ended September 30, 2023, and September 30, 2022, 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 Nine Months Ended (dollars in thousands) 2023 2022 2023 2022 Balance at Beginning of Period $ 20,931 $ 22,793 $ 21,902 $ 21,451 Servicing Rights that Resulted From Asset Transfers 206 160 382 1,115 Amortization ( 549 ) ( 581 ) ( 1,696 ) ( 2,023 ) Valuation Allowance Recovery (Provision) — — — 1,829 Balance at End of Period $ 20,588 $ 22,372 $ 20,588 $ 22,372 Valuation Allowance: Balance at Beginning of Period $ — $ — $ — $ ( 1,829 ) Valuation Allowance Recovery (Provision) — — — 1,829 Balance at End of Period $ — $ — $ — $ — Fair Value of Mortgage Servicing Rights Accounted for Beginning of Period $ 26,327 $ 28,314 $ 27,323 $ 21,451 End of Period $ 26,423 $ 27,678 $ 26,423 $ 27,678 The key data and assumptions used in estimating the fair value of the Company’s mortgage servicing rights as of September 30, 2023, and December 31, 2022, were as follows: September 30, December 31, Weighted-Average Constant Prepayment Rate 1 3.81 % 4.02 % Weighted-Average Life (in years) 9.65 9.64 Weighted-Average Note Rate 3.65 % 3.60 % Weighted-Average Discount Rate 2 10.13 % 9.93 % 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, 2023, and December 31, 2022, is presented in the following table. (dollars in thousands) September 30, December 31, Constant Prepayment Rate Decrease in fair value from 25 basis points (“bps”) adverse change $ ( 280 ) $ ( 346 ) Decrease in fair value from 50 bps adverse change ( 602 ) ( 686 ) Discount Rate Decrease in fair value from 25 bps adverse change ( 302 ) ( 316 ) Decrease in fair value from 50 bps adverse change ( 597 ) ( 626 ) 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, 2023
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 including the related unfunded commitments were $ 188.4 million and $ 174.5 million as of September 30, 2023, and December 31, 2022, respectively, and are included in other assets in the consolidated statements of condition. Unfunded Commitments As of September 30, 2023, the expected payments for unfunded affordable housing commitments were as follows: (dollars in thousands) Amount 2023 $ 15,708 2024 24,749 2025 32,334 2026 258 2027 154 Thereafter 12,829 Total Unfunded Commitments $ 86,032 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, 2023, and September 30, 2022. Three Months Ended Nine Months Ended (dollars in thousands) 2023 2022 2023 2022 Effective Yield Method Tax Credits and Other Tax Benefits Recognized $ 1,457 $ 1,520 $ 4,372 $ 4,586 Amortization Expense in Provision for Income Taxes 1,333 1,296 3,998 3,889 Proportional Amortization Method Tax Credits and Other Tax Benefits Recognized $ 3,696 $ 3,802 $ 14,572 $ 11,381 Amortization Expense in Provision for Income Taxes 3,203 3,331 12,630 9,860 There were no impairment losses related to LIHTC investments during the nine months ended September 30, 2023, and September 30, 2022 .

Securities Sold Under Agreement

Securities Sold Under Agreements to Repurchase	9 Months Ended
	Sep. 30, 2023
Securities Sold under Agreements to Repurchase [Abstract]
Securities Sold Under Agreements to Repurchase	Note 7. Securities Sold Under Agreements to Repurchase The following table presents the remaining contractual maturities of the Company’s repurchase agreements as of September 30, 2023, and December 31, 2022, disaggregated by the class of collateral pledged. Remaining Contractual Maturity of Repurchase Agreements (dollars in thousands) Up to 91-365 1-3 Years After Total September 30, 2023 Class of Collateral Pledged: Debt Securities Issued by States and Political Subdivisions $ — $ — $ 490 $ — $ 490 Mortgage-Backed Securities: Residential - Government Agencies — — — 1,792 1,792 Residential - U.S. Government-Sponsored Enterprises — — — 148,208 148,208 Total $ — $ — $ 490 $ 150,000 $ 150,490 December 31, 2022 Class of Collateral Pledged: Debt Securities Issued by States and Political Subdivisions $ — $ — $ — $ 490 $ 490 Mortgage-Backed Securities: Residential - Government Agencies — — 28,673 — 28,673 Residential - U.S. Government-Sponsored Enterprises — — 396,327 300,000 696,327 Total $ — $ — $ 425,000 $ 300,490 $ 725,490 In September 2023, the Company terminated repurchase agreements with three private institutions, with an aggregate outstanding balance of $ 425.0 million. The termination of these repurchase agreements resulted in a $ 14.7 million gain on debt extinguishment, which is reflected in other noninterest income in the consolidated statements of income. Additionally, during the three months ended September 30, 2023, a private institution exercised their call right on two repurchase agreements totaling $ 150.0 million and as a result the agreements were terminated. The following table presents the assets and liabilities subject to an enforceable master netting arrangement, or repurchase agreements as of September 30, 2023, and December 31, 2022. 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 for more information on swap agreements. (i) (ii) (iii) = (i)-(ii) (iv) (v) = (iii)-(iv) Gross Amounts Not Offset in (dollars in thousands) Gross Amounts Gross Amounts Net Amounts Netting Fair Value 1 Net Amount September 30, 2023 Assets: Interest Rate Swap Agreements: Institutional Counterparties $ 201,610 $ — $ 201,610 $ 201,610 $ — $ — Liabilities: Interest Rate Swap Agreements: Institutional Counterparties 755 — $ 755 755 — — Repurchase Agreements: Private Institutions 150,000 — 150,000 — 150,000 — Government Entities 490 — 490 — 490 — Total Repurchase Agreements $ 150,490 $ — $ 150,490 $ — $ 150,490 $ — December 31, 2022 Assets: Interest Rate Swap Agreements: Institutional Counterparties $ 42,339 $ — $ 42,339 $ 42,339 $ — $ — Liabilities: Interest Rate Swap Agreements: Institutional Counterparties 3,554 — 3,554 3,554 — — Repurchase Agreements: Private Institutions 725,000 — 725,000 — 725,000 — Government Entities 490 — 490 — 490 — Total Repurchase Agreements $ 725,490 $ — $ 725,490 $ — $ 725,490 $ — 1. The application of collateral cannot reduce the net amount below zero. Therefore, excess collateral is not reflected in this table. For interest rate swap agreements, the fair value of investment securities pledged was $ 24.8 million and $ 34.8 million as of September 30, 2023, and December 31, 2022 , respectively. For repurchase agreements with private institutions, the fair value of investment securities pledged was $ 153.8 million and $ 755.9 million as of September 30, 2023, and December 31, 2022 , respectively. For repurchase agreements with government entities, the fair value of investment securities pledged was $ 0.7 million and $ 0.8 million as of September 30, 2023, and December 31, 2022 , respectively.

Accumulated Other Comprehensive

Accumulated Other Comprehensive Income (Loss)	9 Months Ended
	Sep. 30, 2023
Comprehensive Income (Loss), Net of Tax, Attributable to Parent [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, 2023, and September 30, 2022: (dollars in thousands) Before Tax Tax Effect Net of Tax Three Months Ended September 30, 2023 Net Unrealized Gains (Losses) on Investment Securities: Net Unrealized Gains (Losses) Arising During the Period $ ( 38,035 ) $ ( 11,439 ) $ ( 26,596 ) Amounts Reclassified from Accumulated Other Comprehensive Income (Loss) (Gain) Loss on Sale 4,582 1,237 3,345 Amortization of Unrealized Holding (Gains) Losses on Held-to- 1 6,787 1,800 4,987 Net Unrealized Gains (Losses) on Investment Securities ( 26,666 ) ( 8,402 ) ( 18,264 ) Defined Benefit Plans: Amortization of Net Actuarial Losses (Gains) 177 46 131 Amortization of Prior Service Credit ( 62 ) ( 15 ) ( 47 ) Defined Benefit Plans, Net 115 31 84 Other Comprehensive Income (Loss) $ ( 26,551 ) $ ( 8,371 ) $ ( 18,180 ) Three Months Ended September 30, 2022 Net Unrealized Gains (Losses) on Investment Securities: Net Unrealized Gains (Losses) Arising During the Period $ ( 111,338 ) $ ( 29,506 ) $ ( 81,832 ) Amounts Reclassified from Accumulated Other Comprehensive Income (Loss) Amortization of Unrealized Holding (Gains) Losses on Held-to- 1 3,037 805 2,232 Net Unrealized Gains (Losses) on Investment Securities ( 108,301 ) ( 28,701 ) ( 79,600 ) Defined Benefit Plans: Amortization of Net Actuarial Losses (Gains) 542 143 399 Amortization of Prior Service Credit ( 61 ) ( 16 ) ( 45 ) Defined Benefit Plans, Net 481 127 354 Other Comprehensive Income (Loss) $ ( 107,820 ) $ ( 28,574 ) $ ( 79,246 ) Nine Months Ended September 30, 2023 Net Unrealized Gains (Losses) on Investment Securities: Net Unrealized Gains (Losses) Arising During the Period $ ( 36,702 ) $ ( 11,086 ) $ ( 25,616 ) Amounts Reclassified from Accumulated Other Comprehensive Income (Loss) (Gain) Loss on Sale 4,582 1,237 3,345 Amortization of Unrealized Holding (Gains) Losses on Held-to- 1 20,500 5,434 15,066 Net Unrealized Gains (Losses) on Investment Securities ( 11,620 ) ( 4,415 ) ( 7,205 ) Defined Benefit Plans: Amortization of Net Actuarial Losses (Gains) 528 140 388 Amortization of Prior Service Credit ( 184 ) ( 48 ) ( 136 ) Defined Benefit Plans, Net 344 92 252 Other Comprehensive Income (Loss) $ ( 11,276 ) $ ( 4,323 ) $ ( 6,953 ) Nine Months Ended September 30, 2022 Net Unrealized Gains (Losses) on Investment Securities: Net Unrealized Gains (Losses) Arising During the Period $ ( 523,365 ) $ ( 138,715 ) $ ( 384,650 ) Amounts Reclassified from Accumulated Other Comprehensive Income (Loss) Amortization of Unrealized Holding (Gains) Losses on Held-to- 1 3,100 821 2,279 Net Unrealized Gains (Losses) on Investment Securities ( 520,265 ) ( 137,894 ) ( 382,371 ) Defined Benefit Plans: Amortization of Net Actuarial Losses (Gains) 1,626 431 1,195 Amortization of Prior Service Credit ( 184 ) ( 48 ) ( 136 ) Defined Benefit Plans, Net 1,442 383 1,059 Other Comprehensive Income (Loss) $ ( 518,823 ) $ ( 137,511 ) $ ( 381,312 ) 1 These amounts 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, 2023, and September 30, 2022: (dollars in thousands) Investment Investment Defined Benefit Accumulated Three Months Ended September 30, 2023 Balance at Beginning of Period $ ( 239,803 ) $ ( 158,718 ) $ ( 24,910 ) $ ( 423,431 ) Other Comprehensive Income (Loss) Before Reclassifications ( 26,596 ) — — ( 26,596 ) Amounts Reclassified from Accumulated Other 3,345 4,987 84 8,416 Total Other Comprehensive Income (Loss) ( 23,251 ) 4,987 84 ( 18,180 ) Balance at End of Period $ ( 263,054 ) $ ( 153,731 ) $ ( 24,826 ) $ ( 441,611 ) Three Months Ended September 30, 2022 Balance at Beginning of Period $ ( 335,758 ) $ 101 $ ( 32,791 ) ( 368,448 ) Other Comprehensive Income (Loss) Before Reclassifications ( 81,832 ) — — ( 81,832 ) Unrealized Net Losses Related to the Transfer of Securities from Available-for-Sale to Held-to-Maturity 176,700 ( 176,700 ) — — Amounts Reclassified from Accumulated Other — 2,232 354 2,586 Total Other Comprehensive Income (Loss) 94,868 ( 174,468 ) 354 ( 79,246 ) Balance at End of Period $ ( 240,890 ) $ ( 174,367 ) $ ( 32,437 ) $ ( 447,694 ) Nine Months Ended September 30, 2023 Balance at Beginning of Period $ ( 240,783 ) $ ( 168,797 ) $ ( 25,078 ) $ ( 434,658 ) Other Comprehensive Income (Loss) Before Reclassifications ( 25,616 ) — — ( 25,616 ) Amounts Reclassified from Accumulated Other 3,345 15,066 252 18,663 Total Other Comprehensive Income (Loss) ( 22,271 ) 15,066 252 ( 6,953 ) Balance at End of Period $ ( 263,054 ) $ ( 153,731 ) $ ( 24,826 ) $ ( 441,611 ) Nine Months Ended September 30, 2022 Balance at Beginning of Period $ ( 32,940 ) $ 54 $ ( 33,496 ) ( 66,382 ) Other Comprehensive Income (Loss) Before Reclassifications ( 384,650 ) — — ( 384,650 ) Unrealized Net Losses Related to the Transfer of Securities from Available-for-Sale to Held-to-Maturity 176,700 ( 176,700 ) — — Amounts Reclassified from Accumulated Other — 2,279 1,059 3,338 Total Other Comprehensive Income (Loss) ( 207,950 ) ( 174,421 ) 1,059 ( 381,312 ) Balance at End of Period $ ( 240,890 ) $ ( 174,367 ) $ ( 32,437 ) $ ( 447,694 ) 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, 2023, and September 30, 2022: Details about Accumulated Other Amount Reclassified from Accumulated 1 Affected Line Item in the Statement Three Months Ended September 30, (dollars in thousands) 2023 2022 Amortization of Unrealized Holding Gains (Losses) on $ ( 6,787 ) $ ( 3,037 ) Interest Income 1,800 805 Provision for Income Tax ( 4,987 ) ( 2,232 ) Net of Tax Sale of Investment Securities Available-for-Sale ( 4,582 ) — Investment Securities Gains (Losses), Net 1,237 — Provision for Income Tax ( 3,345 ) — Net of tax Amortization of Defined Benefit Plan Items Prior Service Credit 2 62 61 Net Actuarial Losses 2 ( 177 ) ( 542 ) ( 115 ) ( 481 ) Total Before Tax 31 127 Provision for Income Tax ( 84 ) ( 354 ) Net of Tax Total Reclassifications for the Period $ ( 8,416 ) $ ( 2,586 ) Net of Tax Details about Accumulated Other Amount Reclassified from Accumulated 1 Affected Line Item in the Statement Nine Months Ended September 30, (dollars in thousands) 2023 2022 Amortization of Unrealized Holding Gains (Losses) on $ ( 20,500 ) $ ( 3,100 ) Interest Income 5,434 821 Provision for Income Tax ( 15,066 ) ( 2,279 ) Net of Tax Sale of Investment Securities Available-for-Sale ( 4,582 ) — Investment Securities Gains (Losses), Net 1,237 — Provision for Income Tax ( 3,345 ) — Net of tax Amortization of Defined Benefit Plan Items Prior Service Credit 2 184 184 Net Actuarial Losses 2 ( 528 ) ( 1,626 ) ( 344 ) ( 1,442 ) Total Before Tax 92 383 Provision for Income Tax ( 252 ) ( 1,059 ) Net of Tax Total Reclassifications for the Period $ ( 18,663 ) $ ( 3,338 ) Net of Tax 1. Amounts in parentheses indicate reductions to net income. 2. These accumulated other comprehensive income (loss) components are included in the computation of net periodic benefit cost and are included in other noninterest expense on the consolidated statements of income.

Earnings Per Common Share

Earnings Per Common Share	9 Months Ended
	Sep. 30, 2023
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 used in the calculation of basic and diluted earnings per common share and antidilutive stock options and restricted stock outstanding for the three and nine months ended September 30, 2023, and September 30, 2022: Three Months Ended Nine Months Ended (dollars in thousands, except shares and per share amounts) 2023 2022 2023 2022 Numerator: Net Income Available to Common Shareholders $ 45,934 $ 50,832 $ 134,898 $ 158,589 Denominator: Weighted Average Common Shares Outstanding - Basic 39,274,626 39,567,047 39,264,450 39,670,409 Dilutive Effect of Equity Based Awards 145,905 191,162 127,983 178,386 Weighted Average Common Shares Outstanding - Diluted 39,420,531 39,758,209 39,392,433 39,848,795 Earnings Per Common Share: Basic $ 1.17 $ 1.28 $ 3.44 $ 4.00 Diluted $ 1.17 $ 1.28 $ 3.42 $ 3.98 Antidilutive Stock Options and Restricted Stock Outstanding 202,864 — 222,851 —

Business Segments

Business Segments	9 Months Ended
	Sep. 30, 2023
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 CECL methodology that the Company had adopted and used 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 Commercial Leasing portfolio (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, overdraft 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 51 branch locations and 320 ATMs throughout Hawaii and the Pacific Islands, a customer service center, e-Bankoh (online 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, 2023, and September 30, 2022, were as follows: (dollars in thousands) Consumer Commercial Treasury Consolidated Three Months Ended September 30, 2023 Net Interest Income (Loss) $ 100,913 $ 53,823 $ ( 33,799 ) $ 120,937 Provision for Credit Losses 1,974 74 ( 48 ) 2,000 Net Interest Income (Loss) After Provision for Credit Losses 98,939 53,749 ( 33,751 ) 118,937 Noninterest Income 31,027 8,483 10,824 50,334 Noninterest Expense ( 81,377 ) ( 18,937 ) ( 5,287 ) ( 105,601 ) Income (Loss) Before Provision for Income Taxes 48,589 43,295 ( 28,214 ) 63,670 Provision for Income Taxes ( 12,582 ) ( 10,987 ) 7,802 ( 15,767 ) Net Income (Loss) $ 36,007 $ 32,308 $ ( 20,412 ) $ 47,903 Total Assets as of September 30, 2023 $ 8,584,221 $ 5,719,577 $ 9,245,987 $ 23,549,785 Three Months Ended September 30, 2022 1 Net Interest Income (Loss) $ 85,658 $ 56,251 $ ( 254 ) $ 141,655 Provision for Credit Losses 1,148 ( 1 ) ( 1,147 ) — Net Interest Income After Provision for Credit Losses 84,510 56,252 893 141,655 Noninterest Income 30,974 ( 911 ) 597 30,660 Noninterest Expense ( 83,408 ) ( 17,330 ) ( 5,011 ) ( 105,749 ) Income (Loss) Before Provision for Income Taxes 32,076 38,011 ( 3,521 ) 66,566 Provision for Income Taxes ( 8,067 ) ( 9,206 ) 3,508 ( 13,765 ) Net Income (Loss) $ 24,009 $ 28,805 $ ( 13 ) $ 52,801 Total Assets as of September 30, 2022 1 $ 8,399,068 $ 5,486,330 $ 9,248,642 $ 23,134,040 Nine Months Ended September 30, 2023 Net Interest Income (Loss) $ 298,512 $ 164,202 $ ( 81,474 ) $ 381,240 Provision for Credit Losses 6,035 59 406 6,500 Net Interest Income (Loss) After Provision for Credit Losses 292,477 164,143 ( 81,880 ) 374,740 Noninterest Income 94,126 25,072 15,128 134,326 Noninterest Expense ( 247,543 ) ( 58,528 ) ( 15,485 ) ( 321,556 ) Income (Loss) Before Provision for Income Taxes 139,060 130,687 ( 82,237 ) 187,510 Provision for Income Taxes ( 35,838 ) ( 32,490 ) 21,624 ( 46,704 ) Net Income (Loss) $ 103,222 $ 98,197 $ ( 60,613 ) $ 140,806 Total Assets as of September 30, 2023 $ 8,584,221 $ 5,719,577 $ 9,245,987 $ 23,549,785 Nine Months Ended September 30, 2022 1 Net Interest Income $ 232,646 $ 152,394 $ 14,780 $ 399,820 Provision for Credit Losses 3,463 ( 200 ) ( 11,263 ) ( 8,000 ) Net Interest Income After Provision for Credit Losses 229,183 152,594 26,043 407,820 Noninterest Income 94,811 17,650 3,908 116,369 Noninterest Expense ( 247,854 ) ( 53,014 ) ( 11,694 ) ( 312,562 ) Income Before Provision for Income Taxes 76,140 117,230 18,257 211,627 Provision for Income Taxes ( 19,114 ) ( 28,654 ) 638 ( 47,130 ) Net Income $ 57,026 $ 88,576 $ 18,895 $ 164,497 Total Assets as of September 30, 2022 1 $ 8,399,068 $ 5,486,330 $ 9,248,642 $ 23,134,040 1 Certain prior period information has been reclassified to conform to current presentation.

Derivative Financial Instrument

Derivative Financial Instruments	9 Months Ended
	Sep. 30, 2023
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Financial Instruments	Note 11. Derivative Financial Instruments The Company uses derivative instruments to manage its exposure to market risks, including interest rate risk, and to assist customers with their risk management objectives. The Company designates certain derivatives as hedging instruments in a qualifying hedge accounting relationship, while other derivatives serve as economic hedges that do not qualify for hedge accounting. The notional amount and fair value of the Company’s derivative financial instruments as of September 30, 2023, and December 31, 2022, were as follows: September 30, 2023 December 31, 2022 (dollars in thousands) Notional Amount Fair Value Notional Amount Fair Value Derivatives designated as hedging instruments Interest Rate Swap Agreements $ 2,000,000 $ 8,216 $ — $ — Derivatives not designated as hedging instruments Interest Rate Lock Commitments 11,764 113 3,860 58 Forward Commitments 11,376 68 3,256 6 Interest Rate Swap Agreements Receive Fixed/Pay Variable Swaps 2,005,276 ( 200,915 ) 1,821,433 ( 160,914 ) Pay Fixed/Receive Variable Swaps 2,005,276 200,855 1,821,433 38,785 Foreign Exchange Contracts 620 — 52,065 1,745 Conversion Rate Swap Agreement 1 137,110 — 124,752 NA 1 The conversion rate swap agreements were valued at zero as further reductions to the conversion rate were deemed neither probable nor reasonably estimable. 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, 2023, and December 31, 2022: September 30, 2023 December 31, 2022 Asset Liability Asset Liability (dollars in thousands) Derivatives Derivatives Derivatives Derivatives Derivatives designated as hedging instruments Interest Rate Swap Agreements $ 8,216 $ — $ — $ — Derivatives not designated as hedging instruments Interest Rate Lock Commitments 142 29 64 6 Forward Commitments 71 3 10 4 Interest Rate Swap Agreements 202,305 202,365 45,831 167,960 Foreign Exchange Contracts — — 1,812 67 Total $ 210,734 $ 202,397 $ 47,717 $ 168,037 1 Asset derivatives are included in other assets and liability derivatives are included in other liabilities in the consolidated statements of condition. 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. 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, 2023, and September 30, 2022: Location of Net Gains (Losses) Three Months Ended Nine Months Ended Recognized in the September 30, September 30, (dollars in thousands) Statements of Income 2023 2022 2023 2022 Derivatives designated as hedging instruments Recognized on Interest Rate Swap Agreements Interest Income on Investment Securities Available-for-Sale $ 4,954 $ — $ 4,954 $ — Recognized on Hedged Item Interest Income on Investment Securities Available-for-Sale ( 5,035 ) ( 5,035 ) $ — Recognized on Interest Rate Swap Agreements Interest and Fees on Loans and Leases 2,828 — 3,262 — Recognized on Hedged Item Interest and Fees on Loans and Leases ( 2,885 ) — ( 3,321 ) — Derivatives not designated as hedging instruments Interest Rate Lock Commitments Mortgage Banking 75 1 553 ( 1,012 ) Forward Commitments Mortgage Banking 199 289 260 2,510 Interest Rate Swap Agreements Other Noninterest Income 21 35 3 52 Foreign Exchange Contracts Other Noninterest Income 816 430 2,460 936 Conversion Rate Swap Agreement Investment Securities Gains (Losses), Net ( 798 ) — ( 1,362 ) — Total $ 175 $ 755 $ 1,774 $ 2,486 The following amounts were recorded on the consolidated statement of financial condition related to the cumulative basis adjustment for fair value hedges as of September 30, 2023: Derivative Financial Instruments Designated as Hedging Instruments Line Item in the Consolidated Statement of Condition Carrying Amount of the Hedged Assets Cumulative Amount of Fair Value Hedging Adjustment Included In the Carrying Amount of the Hedged Assets (dollars in thousands) September 30, 2023 September 30, 2023 Investment Securities, Available-for-Sale 1 $ 994,965 $ ( 5,035 ) Loans and Leases 2 996,679 ( 3,321 ) 1 These amounts were included in the fair value of closed portfolios of investment securities, available-for-sale used to designate hedging relationships in which the hedged item is the stated amount of assets in the closed portfolios anticipated to be outstanding for the designated hedge period. As of September 30, 2023 , the fair value of the closed portfolios used in these hedging relationships was $ 1.9 billion. 2 These amounts were included in the amortized cost basis of closed portfolios of loans used to designate hedging relationships in which the hedged item is the stated amount of assets in the closed portfolios anticipated to be outstanding for the designated hedge period. As of September 30, 2023 , the amortized cost basis of the closed portfolios used in these hedging relationships was $ 3.2 billion. Derivatives Not Designated as Hedging Instruments 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 interest rate swap agreements with highly rated third-party financial institutions. The interest rate swap agreements are free-standing derivatives and are recorded at fair value in the Company’s consolidated statements of condition (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 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 asset positions with its financial institution counterparties totaling $ 200.9 million and $ 38.8 million as of September 30, 2023, and December 31, 2022, respectively. 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, 2023, and December 31, 2022, 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. Derivatives Designated as Hedging Instruments Fair Value Hedges The Company is exposed to changes in the fair value of fixed-rate assets due to changes in benchmark interest rates. The Company entered into pay-fixed and receive-floating interest rate swaps to manage its exposure to changes in fair value of its available-for-sale investment securities and fixed rate loans. These interest rate swaps are designated as fair value hedges using the portfolio layer method. The Company receives variable-rate interest payments in exchange for making fixed-rate payments over the lives of the contracts without exchanging the notional amounts. The fair value hedges are recorded as components of other assets and other liabilities in the Company’s consolidated statements of financial condition. The gain or loss on these derivatives, as well as the offsetting loss or gain on the hedged items attributable to the hedged risk are recognized in interest income in the Company’s consolidated statements of income.

Commitments and Contingencies

Commitments and Contingencies	9 Months Ended
	Sep. 30, 2023
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Note 12. Commitments and Contingencies The Company’s credit commitments as of September 30, 2023, and December 31, 2022, were as follows: (dollars in thousands) September 30, December 31, Unfunded Commitments to Extend Credit $ 3,547,254 $ 3,592,872 Standby Letters of Credit 86,534 129,512 Commercial Letters of Credit 20,968 24,030 Total Credit Commitments $ 3,654,756 $ 3,746,414 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. Assets valued at $ 60.6 million secured certain specifically identified standby letters of credit as of September 30, 2023. As of September 30, 2023, the standby and commercial letters of credit had remaining terms ranging from 1 to 12 months . 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 any 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, 2023
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 interest rate lock commitments (“IRLCs”), forward commitments, interest rate swap agreements, foreign exchange contracts, and Visa Class B to Class A shares conversion rate swap agreements. The fair values of IRLCs are calculated based on the value of the underlying loan held for sale, which in turn is based on quoted prices for similar loans in the secondary market. However, this value is adjusted by a factor which considers the likelihood that the loan in a locked position will ultimately close. This factor, the closing ratio, is derived from the Bank’s internal data and is adjusted using significant management judgment. As such, IRLCs are classified as Level 3 measurements. Forward commitments are classified as Level 2 measurements as they are primarily based on quoted prices from the secondary market based on the settlement date of the contracts, interpolated or extrapolated, if necessary, to estimate a fair value as of the end of the reporting period. The fair values of interest rate swap agreements are calculated using a discounted cash flow approach and utilize Level 2 observable inputs such as a market yield curve, effective date, maturity date, notional amount, and stated interest rate. The valuation methodology for interest rate swaps with financial institution counterparties (and the related customer interest rate swaps) is based on the Secured Overnight Financing Rate ("SOFR"). 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, 2023, and December 31, 2022, the conversion rate swap agreements were valued at zero as reductions to the conversion ratio were neither probable nor reasonably estimable by management. See Note 11 Derivative Financial Instruments for more information. The Company is exposed to credit risk if borrowers or counterparties fail to perform. The Company seeks to minimize credit risk through credit approvals, limits, monitoring procedures, and collateral requirements. The Company generally enters into transactions with borrowers of high credit quality 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, 2023, and December 31, 2022. Quoted Prices Significant Significant (dollars in thousands) (Level 1) (Level 2) (Level 3) Total September 30, 2023 Assets: Investment Securities Available-for-Sale Debt Securities Issued by the U.S. Treasury and Government $ 142,059 $ 71,397 $ — $ 213,456 Debt Securities Issued by States and Political Subdivisions — 60,602 — 60,602 Debt Securities Issued by U.S. Government-Sponsored — 1,640 — 1,640 Debt Securities Issued by Corporations — 649,140 — 649,140 Mortgage-Backed Securities: Residential - Government Agencies — 631,947 — 631,947 Residential - U.S. Government-Sponsored Enterprises — 699,349 — 699,349 Commercial - Government Agencies — 131,190 — 131,190 Total Mortgage-Backed Securities — 1,462,486 — 1,462,486 Total Investment Securities Available-for-Sale 142,059 2,245,265 — 2,387,324 Loans Held for Sale — 1,450 — 1,450 Mortgage Servicing Rights — — 685 685 Other Assets 51,435 — — 51,435 Derivatives 1 — 71 210,663 210,734 Total Assets Measured at Fair Value on a Recurring Basis as of $ 193,494 $ 2,246,786 $ 211,348 $ 2,651,628 Liabilities: Derivatives 1 $ — $ 3 $ 202,394 $ 202,397 Total Liabilities Measured at Fair Value on a Recurring Basis as of $ — $ 3 $ 202,394 $ 202,397 December 31, 2022 Assets: Investment Securities Available-for-Sale Debt Securities Issued by the U.S. Treasury $ 141,944 $ 91,962 $ — $ 233,906 Debt Securities Issued by States and Political Subdivisions — 95,265 — 95,265 Debt Securities Issued by — 48,628 — 48,628 Debt Securities Issued by Corporations — 794,658 — 794,658 Mortgage-Backed Securities: Residential - Government Agencies — 732,828 — 732,828 Residential - U.S. Government-Sponsored Enterprises — 793,871 — 793,871 Commercial - Government Agencies or Sponsored Agencies — 145,667 — 145,667 Total Mortgage-Backed Securities — 1,672,366 — 1,672,366 Total Investment Securities Available-for-Sale 141,944 2,702,879 — 2,844,823 Loans Held for Sale — 1,035 — 1,035 Mortgage Servicing Rights — — 717 717 Other Assets 47,755 — — 47,755 Derivatives 1 — 1,822 45,895 47,717 Total Assets Measured at Fair Value on a $ 189,699 $ 2,705,736 $ 46,612 $ 2,942,047 Liabilities: Derivatives 1 $ — $ 70 $ 167,967 $ 168,037 Total Liabilities Measured at Fair Value on a $ — $ 70 $ 167,967 $ 168,037 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, 2023, and September 30, 2022, the changes in Level 3 assets and liabilities measured at fair value on a recurring basis were as follows: (dollars in thousands) Mortgage 1 Net Derivative 2 Three Months Ended September 30, 2023 Balance as of July 1, 2023 $ 695 $ 202 Net Gains/(Losses) Included in Net Income ( 10 ) 7,878 Transfers to Loans Held for Sale — ( 187 ) Variation Margin Payments — 376 Balance as of September 30, 2023 $ 685 $ 8,269 Total Unrealized Net Gains (Losses) Included in Net Income Related to Assets Still Held as of September 30, 2023 $ — $ 7,878 Three Months Ended September 30, 2022 Balance as of July 1, 2022 $ 747 $ ( 82,948 ) Net Gains/(Losses) Included in Net Income ( 15 ) 36 Transfers to Loans Held for Sale — ( 284 ) Variation Margin Payments — ( 48,968 ) Balance as of September 30, 2022 $ 732 $ ( 132,164 ) Total Unrealized Net Gains (Losses) Included in Net Income Related to Assets Still Held as of September 30, 2022 $ — $ 36 Nine Months Ended September 30, 2023 Balance as of January 1, 2023 $ 717 ( 122,071 ) Realized and Unrealized Net Gains (Losses): Included in Net Income ( 32 ) 8,772 Transfers to Loans Held for Sale — ( 498 ) Variation Margin Payments — 122,066 Balance as of September 30, 2023 $ 685 8,269 Total Unrealized Net Gains (Losses) Included in Net Income Related to Assets Still Held as of September 30, 2023 $ — $ 8,772 Nine Months Ended September 30, 2022 Balance as of January 1, 2023 $ 800 $ 23,904 Realized and Unrealized Net Gains (Losses): Included in Net Income ( 68 ) ( 961 ) Transfers to Loans Held for Sale — ( 111 ) Variation Margin Payments — ( 154,996 ) Balance as of September 30, 2022 $ 732 $ ( 132,164 ) Total Unrealized Net Gains (Losses) Included in Net Income Related to Assets Still Held as of September 30, 2022 $ — $ ( 961 ) 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 not designated as hedging instruments are reported as a component of other noninterest income and interest rate swap agreements designated as hedging instruments are reported in interest 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, 2023, and December 31, 2022, the significant unobservable inputs used in the fair value measurements were as follows: (dollars in thousands) Valuation Description Range Weighted 1 Fair September 30, 2023 Mortgage Servicing Rights Discounted Cash Flow Constant Prepayment Rate 2.86 % - 18.44 % 3.81 % $ 27,108 Discount Rate 7.73 % - 11.02 % 10.13 % Net Derivative Assets and Liabilities: Interest Rate Lock Commitments Pricing Model Closing Ratio 83.50 % - 99.00 % 94.59 % $ 113 Interest Rate Swap Agreements Discounted Cash Flow Credit Factor 0.00 % - 8.04 % 0.01 % $ 8,155 December 31, 2022 Mortgage Servicing Rights Discounted Cash Flow Constant Prepayment Rate 2.81 % - 10.63 % 4.02 % $ 28,040 Discount Rate 8.70 % - 10.40 % 9.93 % $ — Net Derivative Assets and Liabilities: Interest Rate Lock Commitments Pricing Model Closing Ratio 84.10 % - 99.00 % 92.86 % $ 58 Interest Rate Swap Agreements Discounted Cash Flow Credit Factor 0.00 % - 0.49 % 0.01 % $ ( 122,129 ) 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, 2023, and December 31, 2022. (dollars in thousands) Fair Value Net Carrying Valuation September 30, 2023 Mortgage Servicing Rights - amortization method Level 3 $ 20,588 $ — December 31, 2022 Mortgage Servicing Rights - amortization method Level 3 $ 21,902 $ — 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, 2023, and December 31, 2022. (dollars in thousands) Aggregate Aggregate Aggregate September 30, 2023 Loans Held for Sale $ 1,450 $ 1,461 $ ( 11 ) December 31, 2022 Loans Held for Sale $ 1,035 $ 1,016 $ 19 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, 2023, and year ended December 31, 2022, 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, 2023, and December 31, 2022. 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 of Des Moines 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 Significant Significant (dollars in thousands) Amount Fair Value (Level 1) (Level 2) (Level 3) September 30, 2023 Financial Instruments - Assets Investment Securities Held-to-Maturity $ 5,088,013 $ 4,104,469 $ 111,409 $ 3,993,060 $ — Loans 13,651,759 12,416,800 — — 12,416,800 Financial Instruments - Liabilities Time Deposits 2,659,014 2,627,361 — 2,627,361 — Securities Sold Under Agreements to Repurchase 150,490 151,963 — 151,963 — Other Debt 1 550,000 538,987 — 538,987 — December 31, 2022 Financial Instruments – Assets Investment Securities Held-to-Maturity $ 5,414,139 $ 4,615,393 $ 113,417 $ 4,501,976 $ — Loans 13,371,226 12,386,615 — — 12,386,615 Financial Instruments – Liabilities Time Deposits 1,705,737 1,679,777 — 1,679,777 — Securities Sold Under Agreements to Repurchase 725,490 718,614 — 718,614 — Other Debt 1 400,000 402,877 — 402,877 — 1 Excludes finance lease obligations.

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Policies)	9 Months Ended
	Sep. 30, 2023
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 Hawai‘i Corporation is a trade name of Bank of Hawaii Corporation, and along with its subsidiaries (collectively, the “Company”), provides a broad range of financial products and services to businesses, consumers and governments in Hawaii and the West Pacific. 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”), doing business as Bank of Hawai‘i. 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 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, 2022. Significant changes to accounting policies from those disclosed in our audited consolidated financial statements and related notes included in the Company’s Annual Report on Form 10-K are presented below. In January 2023 , the Company adopted ASU 2022-02, “Financial Instruments - Credit Losses (Topic 326): Troubled Debt Restructurings and Vintage Disclosures” (“ASU 2022-02”), which eliminated the accounting guidance for troubled debt restructurings (“TDRs”) while enhancing disclosure requirements for certain loan refinancing and restructurings by creditors when a borrower is experiencing financial difficulty. This guidance was applied on a prospective basis. Upon adoption of this guidance, the Company no longer establishes a specific reserve for modifications made on January 1, 2023 and forward to borrowers experiencing financial difficulty. Instead, these modifications are included in their respective cohort and a historical loss rate is applied to the current loan balance to arrive at the quantitative baseline portion of the Allowance for Credit Losses. Modifications to borrowers experiencing financial difficulty may include interest rate reductions, principal or interest forgiveness, forbearances, term extensions, and other actions intended to minimize economic loss and to avoid foreclosure or repossession of collateral.
Accounting Standard Pending Adoption	Accounting Standard Pending Adoption In March 2023, the FASB issued ASU 2023-02, “Investments – Equity Method and Joint Ventures (Topic 323): Accounting for Investments in Tax Credit Structures Using the Proportional Amortization Method.” ASU 2023-02 permits reporting entities to elect to account for their tax equity investments, regardless of the tax credit program from which the income tax credits are received, using the proportional amortization method if certain conditions are met. ASU 2023-02 is effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2023. ASU 2023-02 is not expected to have a material impact on the Company’s consolidated financial statements.

Cash and Cash Equivalents (Tabl

Cash and Cash Equivalents (Tables)	9 Months Ended
	Sep. 30, 2023
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 c onsolidated statement of condition: (dollars in thousands) September 30, Interest-Bearing Deposits in Other Banks $ 4,676 Funds Sold 386,086 Cash and Due From Banks 261,464 Total Cash and Cash Equivalents $ 652,226

Investment Securities (Tables)

Investment Securities (Tables)	9 Months Ended
	Sep. 30, 2023
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, 2023, and December 31, 2022, were as follows: (dollars in thousands) Amortized Gross Gross Fair Value September 30, 2023 Available-for-Sale: Debt Securities Issued by the U.S. Treasury and Government Agencies $ 228,181 $ 408 $ ( 15,133 ) $ 213,456 Debt Securities Issued by States and Political Subdivisions 73,722 — ( 13,120 ) 60,602 Debt Securities Issued by U.S. Government-Sponsored Enterprises 1,757 — ( 117 ) 1,640 Debt Securities Issued by Corporations 706,693 7 ( 57,560 ) 649,140 Mortgage-Backed Securities: Residential - Government Agencies 740,652 101 ( 108,806 ) 631,947 Residential - U.S. Government-Sponsored Enterprises 841,441 — ( 142,092 ) 699,349 Commercial - Government Agencies or Sponsored Agencies 159,647 — ( 28,457 ) 131,190 Total Mortgage-Backed Securities 1,741,740 101 ( 279,355 ) 1,462,486 Total $ 2,752,093 $ 516 $ ( 365,285 ) $ 2,387,324 Held-to-Maturity: Debt Securities Issued by the U.S. Treasury and Government Agencies $ 131,710 $ — $ ( 20,301 ) $ 111,409 Debt Securities Issued by Corporations 11,788 — ( 2,582 ) 9,206 Mortgage-Backed Securities: Residential - Government Agencies 1,712,317 — ( 330,120 ) 1,382,197 Residential - U.S. Government-Sponsored Enterprises 2,794,307 5 ( 519,138 ) 2,275,174 Commercial - Government Agencies or Sponsored Agencies 437,891 — ( 111,408 ) 326,483 Total Mortgage-Backed Securities 4,944,515 5 ( 960,666 ) 3,983,854 Total $ 5,088,013 $ 5 $ ( 983,549 ) $ 4,104,469 December 31, 2022 Available-for-Sale: Debt Securities Issued by the U.S. Treasury and Government Agencies $ 248,335 $ 638 $ ( 15,067 ) $ 233,906 Debt Securities Issued by States and Political Subdivisions 107,689 158 ( 12,582 ) 95,265 Debt Securities Issued by U.S. Government-Sponsored Enterprises 48,807 — ( 179 ) 48,628 Debt Securities Issued by Corporations 850,585 809 ( 56,736 ) 794,658 Mortgage-Backed Securities: Residential - Government Agencies 828,798 245 ( 96,215 ) 732,828 Residential - U.S. Government-Sponsored Enterprises 919,980 1 ( 126,110 ) 793,871 Commercial - Government Agencies or Sponsored Agencies 168,242 — ( 22,575 ) 145,667 Total Mortgage-Backed Securities 1,917,020 246 ( 244,900 ) 1,672,366 Total $ 3,172,436 $ 1,851 $ ( 329,464 ) $ 2,844,823 Held-to-Maturity: Debt Securities Issued by the U.S. Treasury and Government Agencies $ 131,619 $ — $ ( 18,202 ) $ 113,417 Debt Securities Issued by Corporations 17,014 — ( 2,534 ) 14,480 Mortgage-Backed Securities: Residential - Government Agencies 1,848,239 35 ( 294,047 ) 1,554,227 Residential - U.S. Government-Sponsored Enterprises 2,968,322 8 ( 397,055 ) 2,571,275 Commercial - Government Agencies or Sponsored Agencies 448,945 — ( 86,951 ) 361,994 Total Mortgage-Backed Securities 5,265,506 43 ( 778,053 ) 4,487,496 Total $ 5,414,139 $ 43 $ ( 798,789 ) $ 4,615,393
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, 2023. Debt securities issued by government agencies (Small Business Administration securities) and mortgage-backed securities are disclosed separately in the table below as these investment securities may prepay prior to their scheduled contractual maturity dates. (dollars in thousands) Amortized Fair Value Available-for-Sale: Due in One Year or Less $ 1,798 $ 1,768 Due After One Year Through Five Years 332,832 309,375 Due After Five Years Through Ten Years 598,290 537,433 Due After Ten Years 6,380 4,866 939,300 853,442 Debt Securities Issued by Government Agencies 71,053 71,396 Mortgage-Backed Securities: Residential - Government Agencies 740,652 631,947 Residential - U.S. Government-Sponsored Enterprises 841,441 699,349 Commercial - Government Agencies or Sponsored Agencies 159,647 131,190 Total Mortgage-Backed Securities 1,741,740 1,462,486 Total $ 2,752,093 $ 2,387,324 Held-to-Maturity: Due in One Year or Less 966 943 Due After One Year Through Five Years 82,244 71,390 Due After Five Year Through Ten Years 60,288 48,282 143,498 120,615 Mortgage-Backed Securities: Residential - Government Agencies 1,712,317 1,382,197 Residential - U.S. Government-Sponsored Enterprises 2,794,307 2,275,174 Commercial - Government Agencies or Sponsored Agencies 437,891 326,483 Total Mortgage-Backed Securities 4,944,515 3,983,854 Total $ 5,088,013 $ 4,104,469
Schedule of Losses on Sales of Investment Securities	The table below presents the losses from the sales of investment securities for the three and nine months ended September 30, 2023, and September 30, 2022: Three Months Ended Nine Months Ended (dollars in thousands) 2023 2022 2023 2022 Gross Gains on Sales of Investment Securities $ 145 $ — $ 145 $ — Gross Losses on Sales of Investment Securities ( 6,879 ) ( 2,147 ) ( 9,981 ) ( 4,987 ) Total Losses on Sales of Investment Securities $ ( 6,734 ) $ ( 2,147 ) $ ( 9,836 ) $ ( 4,987 )
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 Fair Value Gross Fair Value Gross September 30, 2023 Available-for-Sale: Debt Securities Issued by the U.S. Treasury $ 8,272 $ ( 24 ) $ 150,513 $ ( 15,109 ) $ 158,785 $ ( 15,133 ) Debt Securities Issued by States 236 ( 8 ) 60,152 ( 13,112 ) 60,388 ( 13,120 ) Debt Securities Issued by U.S. Government- — — 1,639 ( 117 ) 1,639 ( 117 ) Debt Securities Issued by Corporations 322,435 ( 2,565 ) 301,697 ( 54,995 ) 624,132 ( 57,560 ) Mortgage-Backed Securities: Residential - Government Agencies 11,455 ( 70 ) 616,352 ( 108,736 ) 627,807 ( 108,806 ) Residential - U.S. Government-Sponsored Enterprises 330 ( 7 ) 699,020 ( 142,085 ) 699,350 ( 142,092 ) Commercial - Government Agencies or Sponsored Agencies — — 131,189 ( 28,457 ) 131,189 ( 28,457 ) Total Mortgage-Backed Securities 11,785 ( 77 ) 1,446,561 ( 279,278 ) 1,458,346 ( 279,355 ) Total $ 342,728 $ ( 2,674 ) $ 1,960,562 $ ( 362,611 ) $ 2,303,290 $ ( 365,285 ) December 31, 2022 Available-for-Sale: Debt Securities Issued by the U.S. Treasury $ 28,574 $ ( 1,118 ) $ 127,841 $ ( 13,949 ) $ 156,415 $ ( 15,067 ) Debt Securities Issued by States 11,341 ( 1,240 ) 49,985 ( 11,342 ) 61,326 ( 12,582 ) Debt Securities Issued by U.S. Government- 47,825 ( 108 ) 803 ( 71 ) 48,628 ( 179 ) Debt Securities Issued by Corporations 438,225 ( 7,995 ) 284,350 ( 48,741 ) 722,575 ( 56,736 ) Mortgage-Backed Securities: Residential - Government Agencies 386,809 ( 30,492 ) 340,824 ( 65,723 ) 727,633 ( 96,215 ) Residential - U.S. Government-Sponsored Enterprises 194,684 ( 22,294 ) 598,986 ( 103,816 ) 793,670 ( 126,110 ) Commercial - Government Agencies or Sponsored Agencies 98,694 ( 13,247 ) 46,973 ( 9,328 ) 145,667 ( 22,575 ) Total Mortgage-Backed Securities 680,187 ( 66,033 ) 986,783 ( 178,867 ) 1,666,970 ( 244,900 ) Total $ 1,206,152 $ ( 76,494 ) $ 1,449,762 $ ( 252,970 ) $ 2,655,914 $ ( 329,464 )
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, 2023, and September 30, 2022, were as follows: Three Months Ended Nine Months Ended (dollars in thousands) 2023 2022 2023 2022 Taxable $ 46,367 $ 37,231 $ 140,718 $ 109,830 Non-Taxable 23 7 189 31 Total Interest Income from Investment Securities $ 46,390 $ 37,238 $ 140,907 $ 109,861
Schedule of Carrying Value of Federal Home Loan Bank of Des Moines Stock and Federal Reserve Bank Stock	As of September 30, 2023, and December 31, 2022, 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, December 31, Federal Home Loan Bank of Des Moines Stock $ 32,000 $ 26,000 Federal Reserve Bank Stock 27,400 27,065 Total $ 59,400 $ 53,065

Loans and Leases and the Allo_2

Loans and Leases and the Allowance for Credit Losses (Tables)	9 Months Ended
	Sep. 30, 2023
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, 2023, and December 31, 2022: (dollars in thousands) September 30, December 31, Commercial Commercial and Industrial $ 1,569,572 $ 1,389,066 Paycheck Protection Program 12,529 19,579 Commercial Mortgage 3,784,339 3,725,542 Construction 251,507 260,825 Lease Financing 61,522 69,491 Total Commercial 5,679,469 5,464,503 Consumer Residential Mortgage 4,699,140 4,653,072 Home Equity 2,285,974 2,225,950 Automobile 856,113 870,396 Other 2 398,795 432,499 Total Consumer 8,240,022 8,181,917 Total Loans and Leases $ 13,919,491 $ 13,646,420 1. Comprised of other revolving credit, installment, and lease financing.
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, 2023, and September 30, 2022. (dollars in thousands) Commercial Consumer Total Three Months Ended September 30, 2023 Allowance for Credit Losses: Balance at Beginning of Period $ 63,941 $ 81,426 $ 145,367 Loans and Leases Charged-Off ( 294 ) ( 3,323 ) ( 3,617 ) Recoveries on Loans and Leases Previously Charged-Off 72 1,496 1,568 Net Loans and Leases Recovered (Charged-Off) ( 222 ) ( 1,827 ) ( 2,049 ) Provision for Credit Losses 4,283 ( 2,338 ) 1,945 Balance at End of Period $ 68,002 $ 77,261 $ 145,263 Nine Months Ended September 30, 2023 Allowance for Credit Losses: Balance at Beginning of Period $ 63,900 $ 80,539 $ 144,439 Loans and Leases Charged-Off ( 758 ) ( 10,679 ) ( 11,437 ) Recoveries on Loans and Leases Previously Charged-Off 225 5,118 5,343 Net Loans and Leases Recovered (Charged-Off) ( 533 ) ( 5,561 ) ( 6,094 ) Provision for Credit Losses 4,635 2,283 6,918 Balance at End of Period $ 68,002 $ 77,261 $ 145,263 Three Months Ended September 30, 2022 Allowance for Credit Losses: Balance at Beginning of Period $ 61,826 $ 86,686 $ 148,512 Loans and Leases Charged-Off ( 147 ) ( 2,718 ) ( 2,865 ) Recoveries on Loans and Leases Previously Charged-Off 45 1,673 1,718 Net Loans and Leases Recovered (Charged-Off) ( 102 ) ( 1,045 ) ( 1,147 ) Provision for Credit Losses 157 ( 1,086 ) ( 929 ) Balance at End of Period $ 61,881 $ 84,555 $ 146,436 Nine Months Ended September 30, 2022 Allowance for Credit Losses: Balance at Beginning of Period $ 64,950 $ 92,871 $ 157,821 Loans and Leases Charged-Off ( 729 ) ( 9,390 ) ( 10,119 ) Recoveries on Loans and Leases Previously Charged-Off 465 6,390 6,855 Net Loans and Leases Recovered (Charged-Off) ( 264 ) ( 3,000 ) ( 3,264 ) Provision for Credit Losses ( 2,805 ) ( 5,316 ) ( 8,121 ) Balance at End of Period $ 61,881 $ 84,555 $ 146,436
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, 2023. Term Loans by Origination Year (dollars in thousands) 2023 2 2022 2021 2020 2019 Prior Revolving Revolving Total Loans September 30, 2023 Commercial Commercial and Industrial Pass $ 277,427 $ 271,993 $ 242,363 $ 152,581 $ 42,673 $ 82,144 $ 369,945 $ 483 $ 1,439,609 Special Mention 42,774 5,157 - - 695 - 39,956 - 88,582 Classified 11,911 2,784 7,960 6,638 - 8,245 3,828 15 41,381 Total Commercial and Industrial $ 332,112 $ 279,934 $ 250,323 $ 159,219 $ 43,368 $ 90,389 $ 413,729 $ 498 $ 1,569,572 Paycheck Protection Program Pass $ - $ - $ 2,445 $ 10,084 $ - $ - $ - $ - $ 12,529 Total Paycheck Protection Program $ - $ - $ 2,445 $ 10,084 $ - $ - $ - $ - $ 12,529 Commercial Mortgage Pass $ 756,211 $ 1,004,342 $ 713,794 $ 441,404 $ 247,429 $ 435,257 $ 42,790 $ - $ 3,641,227 Special Mention 30,463 61,654 - 3,908 307 13,551 - - 109,883 Classified 2,996 162 1,342 13,139 233 15,357 - - 33,229 Total Commercial Mortgage $ 789,670 $ 1,066,158 $ 715,136 $ 458,451 $ 247,969 $ 464,165 $ 42,790 $ - $ 3,784,339 Construction Pass $ 20,606 $ 132,155 $ 76,109 $ 2,820 $ 16,101 $ 297 $ 3,419 $ - $ 251,507 Total Construction $ 20,606 $ 132,155 $ 76,109 $ 2,820 $ 16,101 $ 297 $ 3,419 $ - $ 251,507 Lease Financing Pass $ 7,046 $ 13,905 $ 14,570 $ 9,160 $ 6,787 $ 8,646 $ - $ - $ 60,114 Classified 627 54 125 102 - 500 - - 1,408 Total Lease Financing $ 7,673 $ 13,959 $ 14,695 $ 9,262 $ 6,787 $ 9,146 $ - $ - $ 61,522 Total Commercial $ 1,150,061 $ 1,492,206 $ 1,058,708 $ 639,836 $ 314,225 $ 563,997 $ 459,938 $ 498 $ 5,679,469 Consumer Residential Mortgage Pass $ 267,172 $ 799,565 $ 1,257,550 $ 988,296 $ 306,197 $ 1,078,785 $ - $ - $ 4,697,565 Classified - - - - - 1,575 - - 1,575 Total Residential Mortgage $ 267,172 $ 799,565 $ 1,257,550 $ 988,296 $ 306,197 $ 1,080,360 $ - $ - $ 4,699,140 Home Equity Pass $ - $ - $ - $ - $ - $ 44 $ 2,242,699 $ 40,870 $ 2,283,613 Classified - - - - - - 1,291 1,070 2,361 Total Home Equity $ - $ - $ - $ - $ - $ 44 $ 2,243,990 $ 41,940 $ 2,285,974 Automobile Pass $ 205,059 $ 326,054 $ 164,714 $ 73,234 $ 55,196 $ 31,464 $ - $ - $ 855,721 Classified 39 59 149 56 6 83 - - 392 Total Automobile $ 205,098 $ 326,113 $ 164,863 $ 73,290 $ 55,202 $ 31,547 $ - $ - $ 856,113 Other 1 Pass $ 74,075 $ 150,228 $ 99,977 $ 16,432 $ 21,154 $ 34,871 $ 1,415 $ - $ 398,152 Classified 118 158 161 21 85 100 - - 643 Total Other $ 74,193 $ 150,386 $ 100,138 $ 16,453 $ 21,239 $ 34,971 $ 1,415 $ - $ 398,795 Total Consumer $ 546,463 $ 1,276,064 $ 1,522,551 $ 1,078,039 $ 382,638 $ 1,146,922 $ 2,245,405 $ 41,940 $ 8,240,022 Total Loans and Leases $ 1,696,524 $ 2,768,270 $ 2,581,259 $ 1,717,875 $ 696,863 $ 1,710,919 $ 2,705,343 $ 42,438 $ 13,919,491 1. Comprised of other revolving credit, installment, and lease financing. 2. Loans reported as Special Mention or Classified in the 2023 column represent renewal of loans that originated in an earlier period. For the nine months ended September 30, 2023 , $ 7.4 million of revolving loans 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, 2022. Term Loans by Origination Year (dollars in thousands) 2022 2021 2020 2019 2018 Prior Revolving Revolving Total Loans December 31, 2022 Commercial Commercial and Industrial Pass $ 360,748 $ 348,300 $ 224,264 $ 59,127 $ 46,799 $ 71,906 $ 257,349 $ 155 $ 1,368,648 Special Mention 273 - - - 96 92 1,357 - 1,818 Classified 7,295 91 1,030 - 1,644 6,267 2,252 21 18,600 Total Commercial and Industrial $ 368,316 $ 348,391 $ 225,294 $ 59,127 $ 48,539 $ 78,265 $ 260,958 $ 176 $ 1,389,066 Paycheck Protection Program Pass $ - $ 5,359 $ 14,220 $ - $ - $ - $ - $ - $ 19,579 Total Paycheck Protection Program $ - $ 5,359 $ 14,220 $ - $ - $ - $ - $ - $ 19,579 Commercial Mortgage Pass $ 1,182,831 $ 771,375 $ 691,054 $ 283,553 $ 131,055 $ 494,924 $ 48,771 $ - $ 3,603,563 Special Mention 29,707 37,657 28,105 - 1,482 5,014 - - 101,965 Classified 182 1,964 8,545 624 - 8,699 - - 20,014 Total Commercial Mortgage $ 1,212,720 $ 810,996 $ 727,704 $ 284,177 $ 132,537 $ 508,637 $ 48,771 $ - $ 3,725,542 Construction Pass $ 124,507 $ 69,992 $ 37,133 $ 16,838 $ - $ 297 $ 12,058 $ - $ 260,825 Total Construction $ 124,507 $ 69,992 $ 37,133 $ 16,838 $ - $ 297 $ 12,058 $ - $ 260,825 Lease Financing Pass $ 16,959 $ 17,823 $ 11,408 $ 9,768 $ 6,379 $ 6,444 $ - $ - $ 68,781 Classified - - - - 710 - - - 710 Total Lease Financing $ 16,959 $ 17,823 $ 11,408 $ 9,768 $ 7,089 $ 6,444 $ - $ - $ 69,491 Total Commercial $ 1,722,502 $ 1,252,561 $ 1,015,759 $ 369,910 $ 188,165 $ 593,643 $ 321,787 $ 176 $ 5,464,503 Consumer Residential Mortgage Pass $ 827,909 $ 1,304,831 $ 1,035,285 $ 321,208 $ 138,214 $ 1,023,841 $ - $ - $ 4,651,288 Classified - - - - 552 1,232 - - 1,784 Total Residential Mortgage $ 827,909 $ 1,304,831 $ 1,035,285 $ 321,208 $ 138,766 $ 1,025,073 $ - $ - $ 4,653,072 Home Equity Pass $ - $ - $ - $ - $ - $ 890 $ 2,186,598 $ 36,114 $ 2,223,602 Classified - - - - - 25 1,105 1,218 2,348 Total Home Equity $ - $ - $ - $ - $ - $ 915 $ 2,187,703 $ 37,332 $ 2,225,950 Automobile Pass $ 405,440 $ 216,039 $ 100,608 $ 84,052 $ 45,301 $ 18,366 $ - $ - $ 869,806 Classified 121 260 23 43 92 51 - - 590 Total Automobile $ 405,561 $ 216,299 $ 100,631 $ 84,095 $ 45,393 $ 18,417 $ - $ - $ 870,396 Other 1 Pass $ 185,347 $ 124,759 $ 31,343 $ 39,902 $ 16,364 $ 9,853 $ 23,228 $ 1,020 $ 431,816 Classified 117 114 70 148 129 24 59 22 683 Total Other $ 185,464 $ 124,873 $ 31,413 $ 40,050 $ 16,493 $ 9,877 $ 23,287 $ 1,042 $ 432,499 Total Consumer $ 1,418,934 $ 1,646,003 $ 1,167,329 $ 445,353 $ 200,652 $ 1,054,282 $ 2,210,990 $ 38,374 $ 8,181,917 Total Loans and Leases $ 3,141,436 $ 2,898,564 $ 2,183,088 $ 815,263 $ 388,817 $ 1,647,925 $ 2,532,777 $ 38,550 $ 13,646,420 1. Comprised of other revolving credit, installment, and lease financing.
Schedule of Aging Analysis by Class of Loan and Lease Portfolio	The following presents by class, an aging analysis of the Company’s loan and lease portfolio as of September 30, 2023, and December 31, 2022. (dollars in thousands) 30 - 59 60 - 89 Past Due Non- Total Current Total Non- 2 As of September 30, 2023 Commercial Commercial and Industrial $ 661 $ 453 $ — $ 43 $ 1,157 $ 1,568,415 $ 1,569,572 $ 43 Paycheck Protection Program — — — — — 12,529 12,529 — Commercial Mortgage — — — 2,996 2,996 3,781,343 3,784,339 2,996 Construction — — — — — 251,507 251,507 — Lease Financing — — — — — 61,522 61,522 — Total Commercial 661 453 — 3,039 4,153 5,675,316 5,679,469 3,039 Consumer Residential Mortgage 3,176 877 3,519 3,706 11,278 4,687,862 4,699,140 765 Home Equity 3,407 1,750 2,172 3,734 11,063 2,274,911 2,285,974 740 Automobile 10,072 1,089 393 — 11,554 844,559 856,113 — Other 1 2,311 1,036 643 — 3,990 394,805 398,795 — Total Consumer 18,966 4,752 6,727 7,440 37,885 8,202,137 8,240,022 1,505 Total $ 19,627 $ 5,205 $ 6,727 $ 10,479 $ 42,038 $ 13,877,453 $ 13,919,491 $ 4,544 As of December 31, 2022 Commercial Commercial and Industrial $ 252 $ 9 $ — $ 37 $ 298 $ 1,388,768 $ 1,389,066 $ 37 Paycheck Protection Program — — — — — 19,579 19,579 — Commercial Mortgage — — — 3,309 3,309 3,722,233 3,725,542 3,309 Construction — — — — — 260,825 260,825 — Lease Financing — — — — — 69,491 69,491 — Total Commercial 252 9 — 3,346 3,607 5,460,896 5,464,503 3,346 Consumer Residential Mortgage 3,016 721 2,429 4,239 10,405 4,642,667 4,653,072 1,729 Home Equity 1,639 960 1,673 4,022 8,294 2,217,656 2,225,950 664 Automobile 13,293 1,988 589 — 15,870 854,526 870,396 — Other 1 2,318 1,302 683 — 4,303 428,196 432,499 — Total Consumer 20,266 4,971 5,374 8,261 38,872 8,143,045 8,181,917 2,393 Total $ 20,518 $ 4,980 $ 5,374 $ 11,607 $ 42,479 $ 13,603,941 $ 13,646,420 $ 5,739 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, 2023, and December 31, 2022. September 30, 2023 December 31, 2022 (dollars in thousands) Non-accrual Non-accrual Total Non- Non-accrual Non-accrual Total Non- Commercial Commercial and Industrial $ 43 $ — $ 43 $ 37 $ — $ 37 Commercial Mortgage — 2,996 2,996 — 3,309 3,309 Total Commercial 43 2,996 3,039 37 3,309 3,346 Consumer Residential Mortgage 3,706 — 3,706 4,239 — 4,239 Home Equity 3,734 — 3,734 4,022 — 4,022 Total Consumer 7,440 — 7,440 8,261 — 8,261 Total $ 7,483 $ 2,996 $ 10,479 $ 8,298 $ 3,309 $ 11,607
Schedule of Amortized Cost Basis and Financial Effect of Loan Modifications to Borrowers Experiencing Financial Difficulty	The following table presents the amortized cost basis of loan modifications made to borrowers experiencing financial difficulty during three and nine months ended September 30, 2023. % Payment Term of Delay Extension and Total Interest and Interest Class of Term Rate Term Rate Payment Loans and (dollars in thousands) Extension Reduction Extension Reduction Delay Total Leases Three Months Ended September 30, 2023 Commercial Commercial and Industrial $ 19 $ — $ — $ — $ — $ 19 0.00 % Total Commercial 19 — — — — 19 0.00 % Consumer Residential Mortgage — — — — 715 715 0.02 % Automobile 3,231 — — — — 3,231 0.38 % Other 1 373 — — — — 373 0.09 % Total Consumer 3,604 — — — 715 4,319 0.05 % Total Loans and Leases $ 3,623 $ — $ — $ — $ 715 $ 4,338 0.03 % Nine Months Ended September 30, 2023 Commercial Commercial and Industrial $ 109 $ — $ 6,102 $ — $ — $ 6,211 0.40 % Commercial Mortgage — 946 — — — 946 0.02 % Total Commercial 109 946 6,102 — — 7,157 0.13 % Consumer Residential Mortgage 132 — — — 715 847 0.02 % Home Equity 136 — — — — 136 0.01 % Automobile 7,428 — — — — 7,428 0.87 % Other 1 732 — — — — 732 0.18 % Total Consumer 8,428 — — — 715 9,143 0.11 % Total Loans and Leases $ 8,537 $ 946 $ 6,102 $ — $ 715 $ 16,300 0.12 % 1 Comprised of other revolving credit, installment and lease financing. The following table presents the financial effect of loan modifications made to borrowers experiencing financial difficulty during the three and nine months ended September 30, 2023. Weighted-Average Weighted-Average Weighted-Average Months of Payment Interest Rate (dollars in thousands) Term Extension Deferral Reduction Three Months Ended September 30, 2023 Commercial Commercial and Industrial 31 $ — — % Commercial Mortgage — — 2.50 % Consumer Residential Mortgage — 5 — Home Equity — — — Automobile 22 — — Other 1 23 — — Nine Months Ended September 30, 2023 Commercial Commercial and Industrial 6 $ 1,159 — % Commercial Mortgage — — 2.50 Consumer Residential Mortgage 58 5 — Home Equity 60 — — Automobile 23 — — Other 1 22 — — 1 Comprised of other revolving credit, installment and lease financing. The following table presents the loan modifications made to borrowers experiencing financial difficulty that defaulted during the three and nine months ended September 30, 2023. Term Payment (dollars in thousands) Extension Delay Total Three Months Ended September 30, 2023 Consumer Residential Mortgage $ — $ 715 $ 715 Automobile 10 — 10 Total Consumer 10 715 725 Total Loans and Leases $ 10 $ 715 $ 725 Nine Months Ended September 30, 2023 Consumer Residential Mortgage $ — $ 715 $ 715 Automobile 140 — 140 Other 1 65 — 65 Total Consumer 205 715 920 Total Loans and Leases $ 205 $ 715 $ 920 1 Comprised of other revolving credit, installment and lease financing.
Schedule of Aging Analysis of Loan Modifications Made to Borrowers Experiencing Financial Difficulty	The following table presents the aging analysis of loan modifications made to borrowers experiencing financial difficulty as of September 30, 2023. (dollars in thousands) Current 30 - 59 60 - 89 Past Due Non- Total As of September 30, 2023 Commercial Commercial and Industrial $ 6,121 $ 90 $ — $ — $ — $ 6,211 Commercial Mortgage 946 — — — — 946 Total Commercial 7,067 90 — — — 7,157 Consumer Residential Mortgage — — — — 847 847 Home Equity 136 — — — — 136 Automobile 6,505 793 102 28 — 7,428 Other 1 584 95 31 22 — 732 Total Consumer 7,225 888 133 50 847 9,143 Total Loans and Leases 14,292 $ 978 $ 133 $ 50 $ 847 $ 16,300 1 Comprised of other revolving credit, installment and lease financing.
Schedule of Loan Class and Year of Origination, Gross Charge-offs Recorded	The following table presents by loan class and year of origination, the gross charge-offs recorded during the three and nine months ended September 30, 2023. (dollars in thousands) 2023 2022 2021 2020 2019 Prior Total Three Months Ended September 30, 2023 Commercial Commercial and Industrial $ 162 $ — $ — $ 84 $ — $ 48 $ 294 Total Commercial 162 — — 84 — 48 294 Consumer Residential Mortgage — — — — — — — Home Equity — — — — 13 — 13 Automobile 134 358 309 145 246 161 1,353 Other 1 455 510 360 114 238 280 1,957 Total Consumer 589 868 669 259 497 441 3,323 Total $ 751 $ 868 $ 669 $ 343 $ 497 $ 489 $ 3,617 Nine Months Ended September 30, 2023 Commercial Commercial and Industrial $ 347 $ 188 $ — $ 84 $ — $ 139 $ 758 Total Commercial 347 188 — 84 — 139 758 Consumer Residential Mortgage — — — — — 6 6 Home Equity — — — — 13 55 68 Automobile 134 1,229 1,053 481 610 802 4,309 Other 1 813 1,844 1,371 316 952 1,000 6,296 Total Consumer 947 3,073 2,424 797 1,575 1,863 10,679 Total $ 1,294 $ 3,261 $ 2,424 $ 881 $ 1,575 $ 2,002 $ 11,437 1 Comprised of other revolving credit, installment and lease financing.

Mortgage Servicing Rights (Tabl

Mortgage Servicing Rights (Tables)	9 Months Ended
	Sep. 30, 2023
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, 2023, and September 30, 2022, 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 Nine Months Ended (dollars in thousands) 2023 2022 2023 2022 Balance at Beginning of Period $ 695 $ 747 $ 717 $ 800 Change in Fair Value Due to Payoffs ( 10 ) ( 15 ) ( 32 ) ( 68 ) Balance at End of Period $ 685 $ 732 $ 685 $ 732
Summary of Carrying Value Under the Amortization Method	For the three and nine months ended September 30, 2023, and September 30, 2022, 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 Nine Months Ended (dollars in thousands) 2023 2022 2023 2022 Balance at Beginning of Period $ 20,931 $ 22,793 $ 21,902 $ 21,451 Servicing Rights that Resulted From Asset Transfers 206 160 382 1,115 Amortization ( 549 ) ( 581 ) ( 1,696 ) ( 2,023 ) Valuation Allowance Recovery (Provision) — — — 1,829 Balance at End of Period $ 20,588 $ 22,372 $ 20,588 $ 22,372 Valuation Allowance: Balance at Beginning of Period $ — $ — $ — $ ( 1,829 ) Valuation Allowance Recovery (Provision) — — — 1,829 Balance at End of Period $ — $ — $ — $ — Fair Value of Mortgage Servicing Rights Accounted for Beginning of Period $ 26,327 $ 28,314 $ 27,323 $ 21,451 End of Period $ 26,423 $ 27,678 $ 26,423 $ 27,678
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, 2023, and December 31, 2022, were as follows: September 30, December 31, Weighted-Average Constant Prepayment Rate 1 3.81 % 4.02 % Weighted-Average Life (in years) 9.65 9.64 Weighted-Average Note Rate 3.65 % 3.60 % Weighted-Average Discount Rate 2 10.13 % 9.93 % 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, 2023, and December 31, 2022, is presented in the following table. (dollars in thousands) September 30, December 31, Constant Prepayment Rate Decrease in fair value from 25 basis points (“bps”) adverse change $ ( 280 ) $ ( 346 ) Decrease in fair value from 50 bps adverse change ( 602 ) ( 686 ) Discount Rate Decrease in fair value from 25 bps adverse change ( 302 ) ( 316 ) Decrease in fair value from 50 bps adverse change ( 597 ) ( 626 )

Affordable Housing Projects T_2

Affordable Housing Projects Tax Credit Partnerships (Tables)	9 Months Ended
	Sep. 30, 2023
Equity Method Investments and Joint Ventures [Abstract]
Expected Payments for Unfunded Affordable Housing Commitments	As of September 30, 2023, the expected payments for unfunded affordable housing commitments were as follows: (dollars in thousands) Amount 2023 $ 15,708 2024 24,749 2025 32,334 2026 258 2027 154 Thereafter 12,829 Total Unfunded Commitments $ 86,032
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, 2023, and September 30, 2022. Three Months Ended Nine Months Ended (dollars in thousands) 2023 2022 2023 2022 Effective Yield Method Tax Credits and Other Tax Benefits Recognized $ 1,457 $ 1,520 $ 4,372 $ 4,586 Amortization Expense in Provision for Income Taxes 1,333 1,296 3,998 3,889 Proportional Amortization Method Tax Credits and Other Tax Benefits Recognized $ 3,696 $ 3,802 $ 14,572 $ 11,381 Amortization Expense in Provision for Income Taxes 3,203 3,331 12,630 9,860

Securities Sold Under Agreeme_2

Securities Sold Under Agreements to Repurchase (Tables)	9 Months Ended
	Sep. 30, 2023
Securities Sold under Agreements to Repurchase [Abstract]
Remaining Contractual Maturities of Repurchase Agreements by Class of Collateral Pledged	The following table presents the remaining contractual maturities of the Company’s repurchase agreements as of September 30, 2023, and December 31, 2022, disaggregated by the class of collateral pledged. Remaining Contractual Maturity of Repurchase Agreements (dollars in thousands) Up to 91-365 1-3 Years After Total September 30, 2023 Class of Collateral Pledged: Debt Securities Issued by States and Political Subdivisions $ — $ — $ 490 $ — $ 490 Mortgage-Backed Securities: Residential - Government Agencies — — — 1,792 1,792 Residential - U.S. Government-Sponsored Enterprises — — — 148,208 148,208 Total $ — $ — $ 490 $ 150,000 $ 150,490 December 31, 2022 Class of Collateral Pledged: Debt Securities Issued by States and Political Subdivisions $ — $ — $ — $ 490 $ 490 Mortgage-Backed Securities: Residential - Government Agencies — — 28,673 — 28,673 Residential - U.S. Government-Sponsored Enterprises — — 396,327 300,000 696,327 Total $ — $ — $ 425,000 $ 300,490 $ 725,490
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, 2023, and December 31, 2022. 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 for more information on swap agreements. (i) (ii) (iii) = (i)-(ii) (iv) (v) = (iii)-(iv) Gross Amounts Not Offset in (dollars in thousands) Gross Amounts Gross Amounts Net Amounts Netting Fair Value 1 Net Amount September 30, 2023 Assets: Interest Rate Swap Agreements: Institutional Counterparties $ 201,610 $ — $ 201,610 $ 201,610 $ — $ — Liabilities: Interest Rate Swap Agreements: Institutional Counterparties 755 — $ 755 755 — — Repurchase Agreements: Private Institutions 150,000 — 150,000 — 150,000 — Government Entities 490 — 490 — 490 — Total Repurchase Agreements $ 150,490 $ — $ 150,490 $ — $ 150,490 $ — December 31, 2022 Assets: Interest Rate Swap Agreements: Institutional Counterparties $ 42,339 $ — $ 42,339 $ 42,339 $ — $ — Liabilities: Interest Rate Swap Agreements: Institutional Counterparties 3,554 — 3,554 3,554 — — Repurchase Agreements: Private Institutions 725,000 — 725,000 — 725,000 — Government Entities 490 — 490 — 490 — Total Repurchase Agreements $ 725,490 $ — $ 725,490 $ — $ 725,490 $ — 1. The application of collateral cannot reduce the net amount below zero. Therefore, excess collateral is not reflected in this table. For interest rate swap agreements, the fair value of investment securities pledged was $ 24.8 million and $ 34.8 million as of September 30, 2023, and December 31, 2022 , respectively. For repurchase agreements with private institutions, the fair value of investment securities pledged was $ 153.8 million and $ 755.9 million as of September 30, 2023, and December 31, 2022 , respectively. For repurchase agreements with government entities, the fair value of investment securities pledged was $ 0.7 million and $ 0.8 million as of September 30, 2023, and December 31, 2022 , respectively.

Accumulated Other Comprehensi_2

Accumulated Other Comprehensive Income (Loss) (Tables)	9 Months Ended
	Sep. 30, 2023
Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract]
Components of Other Comprehensive Income	The following table presents the components of other comprehensive income (loss) for the three and nine months ended September 30, 2023, and September 30, 2022: (dollars in thousands) Before Tax Tax Effect Net of Tax Three Months Ended September 30, 2023 Net Unrealized Gains (Losses) on Investment Securities: Net Unrealized Gains (Losses) Arising During the Period $ ( 38,035 ) $ ( 11,439 ) $ ( 26,596 ) Amounts Reclassified from Accumulated Other Comprehensive Income (Loss) (Gain) Loss on Sale 4,582 1,237 3,345 Amortization of Unrealized Holding (Gains) Losses on Held-to- 1 6,787 1,800 4,987 Net Unrealized Gains (Losses) on Investment Securities ( 26,666 ) ( 8,402 ) ( 18,264 ) Defined Benefit Plans: Amortization of Net Actuarial Losses (Gains) 177 46 131 Amortization of Prior Service Credit ( 62 ) ( 15 ) ( 47 ) Defined Benefit Plans, Net 115 31 84 Other Comprehensive Income (Loss) $ ( 26,551 ) $ ( 8,371 ) $ ( 18,180 ) Three Months Ended September 30, 2022 Net Unrealized Gains (Losses) on Investment Securities: Net Unrealized Gains (Losses) Arising During the Period $ ( 111,338 ) $ ( 29,506 ) $ ( 81,832 ) Amounts Reclassified from Accumulated Other Comprehensive Income (Loss) Amortization of Unrealized Holding (Gains) Losses on Held-to- 1 3,037 805 2,232 Net Unrealized Gains (Losses) on Investment Securities ( 108,301 ) ( 28,701 ) ( 79,600 ) Defined Benefit Plans: Amortization of Net Actuarial Losses (Gains) 542 143 399 Amortization of Prior Service Credit ( 61 ) ( 16 ) ( 45 ) Defined Benefit Plans, Net 481 127 354 Other Comprehensive Income (Loss) $ ( 107,820 ) $ ( 28,574 ) $ ( 79,246 ) Nine Months Ended September 30, 2023 Net Unrealized Gains (Losses) on Investment Securities: Net Unrealized Gains (Losses) Arising During the Period $ ( 36,702 ) $ ( 11,086 ) $ ( 25,616 ) Amounts Reclassified from Accumulated Other Comprehensive Income (Loss) (Gain) Loss on Sale 4,582 1,237 3,345 Amortization of Unrealized Holding (Gains) Losses on Held-to- 1 20,500 5,434 15,066 Net Unrealized Gains (Losses) on Investment Securities ( 11,620 ) ( 4,415 ) ( 7,205 ) Defined Benefit Plans: Amortization of Net Actuarial Losses (Gains) 528 140 388 Amortization of Prior Service Credit ( 184 ) ( 48 ) ( 136 ) Defined Benefit Plans, Net 344 92 252 Other Comprehensive Income (Loss) $ ( 11,276 ) $ ( 4,323 ) $ ( 6,953 ) Nine Months Ended September 30, 2022 Net Unrealized Gains (Losses) on Investment Securities: Net Unrealized Gains (Losses) Arising During the Period $ ( 523,365 ) $ ( 138,715 ) $ ( 384,650 ) Amounts Reclassified from Accumulated Other Comprehensive Income (Loss) Amortization of Unrealized Holding (Gains) Losses on Held-to- 1 3,100 821 2,279 Net Unrealized Gains (Losses) on Investment Securities ( 520,265 ) ( 137,894 ) ( 382,371 ) Defined Benefit Plans: Amortization of Net Actuarial Losses (Gains) 1,626 431 1,195 Amortization of Prior Service Credit ( 184 ) ( 48 ) ( 136 ) Defined Benefit Plans, Net 1,442 383 1,059 Other Comprehensive Income (Loss) $ ( 518,823 ) $ ( 137,511 ) $ ( 381,312 ) 1 These amounts 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, 2023, and September 30, 2022: (dollars in thousands) Investment Investment Defined Benefit Accumulated Three Months Ended September 30, 2023 Balance at Beginning of Period $ ( 239,803 ) $ ( 158,718 ) $ ( 24,910 ) $ ( 423,431 ) Other Comprehensive Income (Loss) Before Reclassifications ( 26,596 ) — — ( 26,596 ) Amounts Reclassified from Accumulated Other 3,345 4,987 84 8,416 Total Other Comprehensive Income (Loss) ( 23,251 ) 4,987 84 ( 18,180 ) Balance at End of Period $ ( 263,054 ) $ ( 153,731 ) $ ( 24,826 ) $ ( 441,611 ) Three Months Ended September 30, 2022 Balance at Beginning of Period $ ( 335,758 ) $ 101 $ ( 32,791 ) ( 368,448 ) Other Comprehensive Income (Loss) Before Reclassifications ( 81,832 ) — — ( 81,832 ) Unrealized Net Losses Related to the Transfer of Securities from Available-for-Sale to Held-to-Maturity 176,700 ( 176,700 ) — — Amounts Reclassified from Accumulated Other — 2,232 354 2,586 Total Other Comprehensive Income (Loss) 94,868 ( 174,468 ) 354 ( 79,246 ) Balance at End of Period $ ( 240,890 ) $ ( 174,367 ) $ ( 32,437 ) $ ( 447,694 ) Nine Months Ended September 30, 2023 Balance at Beginning of Period $ ( 240,783 ) $ ( 168,797 ) $ ( 25,078 ) $ ( 434,658 ) Other Comprehensive Income (Loss) Before Reclassifications ( 25,616 ) — — ( 25,616 ) Amounts Reclassified from Accumulated Other 3,345 15,066 252 18,663 Total Other Comprehensive Income (Loss) ( 22,271 ) 15,066 252 ( 6,953 ) Balance at End of Period $ ( 263,054 ) $ ( 153,731 ) $ ( 24,826 ) $ ( 441,611 ) Nine Months Ended September 30, 2022 Balance at Beginning of Period $ ( 32,940 ) $ 54 $ ( 33,496 ) ( 66,382 ) Other Comprehensive Income (Loss) Before Reclassifications ( 384,650 ) — — ( 384,650 ) Unrealized Net Losses Related to the Transfer of Securities from Available-for-Sale to Held-to-Maturity 176,700 ( 176,700 ) — — Amounts Reclassified from Accumulated Other — 2,279 1,059 3,338 Total Other Comprehensive Income (Loss) ( 207,950 ) ( 174,421 ) 1,059 ( 381,312 ) Balance at End of Period $ ( 240,890 ) $ ( 174,367 ) $ ( 32,437 ) $ ( 447,694 )
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, 2023, and September 30, 2022: Details about Accumulated Other Amount Reclassified from Accumulated 1 Affected Line Item in the Statement Three Months Ended September 30, (dollars in thousands) 2023 2022 Amortization of Unrealized Holding Gains (Losses) on $ ( 6,787 ) $ ( 3,037 ) Interest Income 1,800 805 Provision for Income Tax ( 4,987 ) ( 2,232 ) Net of Tax Sale of Investment Securities Available-for-Sale ( 4,582 ) — Investment Securities Gains (Losses), Net 1,237 — Provision for Income Tax ( 3,345 ) — Net of tax Amortization of Defined Benefit Plan Items Prior Service Credit 2 62 61 Net Actuarial Losses 2 ( 177 ) ( 542 ) ( 115 ) ( 481 ) Total Before Tax 31 127 Provision for Income Tax ( 84 ) ( 354 ) Net of Tax Total Reclassifications for the Period $ ( 8,416 ) $ ( 2,586 ) Net of Tax Details about Accumulated Other Amount Reclassified from Accumulated 1 Affected Line Item in the Statement Nine Months Ended September 30, (dollars in thousands) 2023 2022 Amortization of Unrealized Holding Gains (Losses) on $ ( 20,500 ) $ ( 3,100 ) Interest Income 5,434 821 Provision for Income Tax ( 15,066 ) ( 2,279 ) Net of Tax Sale of Investment Securities Available-for-Sale ( 4,582 ) — Investment Securities Gains (Losses), Net 1,237 — Provision for Income Tax ( 3,345 ) — Net of tax Amortization of Defined Benefit Plan Items Prior Service Credit 2 184 184 Net Actuarial Losses 2 ( 528 ) ( 1,626 ) ( 344 ) ( 1,442 ) Total Before Tax 92 383 Provision for Income Tax ( 252 ) ( 1,059 ) Net of Tax Total Reclassifications for the Period $ ( 18,663 ) $ ( 3,338 ) Net of Tax 1. Amounts in parentheses indicate reductions to net income. 2. These accumulated other comprehensive income (loss) components are included in the computation of net periodic benefit cost and are included in other noninterest expense on the consolidated statements of income.

Earnings Per Common Share (Tabl

Earnings Per Common Share (Tables)	9 Months Ended
	Sep. 30, 2023
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 used in the calculation of basic and diluted earnings per common share and antidilutive stock options and restricted stock outstanding for the three and nine months ended September 30, 2023, and September 30, 2022: Three Months Ended Nine Months Ended (dollars in thousands, except shares and per share amounts) 2023 2022 2023 2022 Numerator: Net Income Available to Common Shareholders $ 45,934 $ 50,832 $ 134,898 $ 158,589 Denominator: Weighted Average Common Shares Outstanding - Basic 39,274,626 39,567,047 39,264,450 39,670,409 Dilutive Effect of Equity Based Awards 145,905 191,162 127,983 178,386 Weighted Average Common Shares Outstanding - Diluted 39,420,531 39,758,209 39,392,433 39,848,795 Earnings Per Common Share: Basic $ 1.17 $ 1.28 $ 3.44 $ 4.00 Diluted $ 1.17 $ 1.28 $ 3.42 $ 3.98 Antidilutive Stock Options and Restricted Stock Outstanding 202,864 — 222,851 —

Business Segments (Tables)

Business Segments (Tables)	9 Months Ended
	Sep. 30, 2023
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, 2023, and September 30, 2022, were as follows: (dollars in thousands) Consumer Commercial Treasury Consolidated Three Months Ended September 30, 2023 Net Interest Income (Loss) $ 100,913 $ 53,823 $ ( 33,799 ) $ 120,937 Provision for Credit Losses 1,974 74 ( 48 ) 2,000 Net Interest Income (Loss) After Provision for Credit Losses 98,939 53,749 ( 33,751 ) 118,937 Noninterest Income 31,027 8,483 10,824 50,334 Noninterest Expense ( 81,377 ) ( 18,937 ) ( 5,287 ) ( 105,601 ) Income (Loss) Before Provision for Income Taxes 48,589 43,295 ( 28,214 ) 63,670 Provision for Income Taxes ( 12,582 ) ( 10,987 ) 7,802 ( 15,767 ) Net Income (Loss) $ 36,007 $ 32,308 $ ( 20,412 ) $ 47,903 Total Assets as of September 30, 2023 $ 8,584,221 $ 5,719,577 $ 9,245,987 $ 23,549,785 Three Months Ended September 30, 2022 1 Net Interest Income (Loss) $ 85,658 $ 56,251 $ ( 254 ) $ 141,655 Provision for Credit Losses 1,148 ( 1 ) ( 1,147 ) — Net Interest Income After Provision for Credit Losses 84,510 56,252 893 141,655 Noninterest Income 30,974 ( 911 ) 597 30,660 Noninterest Expense ( 83,408 ) ( 17,330 ) ( 5,011 ) ( 105,749 ) Income (Loss) Before Provision for Income Taxes 32,076 38,011 ( 3,521 ) 66,566 Provision for Income Taxes ( 8,067 ) ( 9,206 ) 3,508 ( 13,765 ) Net Income (Loss) $ 24,009 $ 28,805 $ ( 13 ) $ 52,801 Total Assets as of September 30, 2022 1 $ 8,399,068 $ 5,486,330 $ 9,248,642 $ 23,134,040 Nine Months Ended September 30, 2023 Net Interest Income (Loss) $ 298,512 $ 164,202 $ ( 81,474 ) $ 381,240 Provision for Credit Losses 6,035 59 406 6,500 Net Interest Income (Loss) After Provision for Credit Losses 292,477 164,143 ( 81,880 ) 374,740 Noninterest Income 94,126 25,072 15,128 134,326 Noninterest Expense ( 247,543 ) ( 58,528 ) ( 15,485 ) ( 321,556 ) Income (Loss) Before Provision for Income Taxes 139,060 130,687 ( 82,237 ) 187,510 Provision for Income Taxes ( 35,838 ) ( 32,490 ) 21,624 ( 46,704 ) Net Income (Loss) $ 103,222 $ 98,197 $ ( 60,613 ) $ 140,806 Total Assets as of September 30, 2023 $ 8,584,221 $ 5,719,577 $ 9,245,987 $ 23,549,785 Nine Months Ended September 30, 2022 1 Net Interest Income $ 232,646 $ 152,394 $ 14,780 $ 399,820 Provision for Credit Losses 3,463 ( 200 ) ( 11,263 ) ( 8,000 ) Net Interest Income After Provision for Credit Losses 229,183 152,594 26,043 407,820 Noninterest Income 94,811 17,650 3,908 116,369 Noninterest Expense ( 247,854 ) ( 53,014 ) ( 11,694 ) ( 312,562 ) Income Before Provision for Income Taxes 76,140 117,230 18,257 211,627 Provision for Income Taxes ( 19,114 ) ( 28,654 ) 638 ( 47,130 ) Net Income $ 57,026 $ 88,576 $ 18,895 $ 164,497 Total Assets as of September 30, 2022 1 $ 8,399,068 $ 5,486,330 $ 9,248,642 $ 23,134,040 1 Certain prior period information has been reclassified to conform to current presentation.

Derivative Financial Instrume_2

Derivative Financial Instruments (Tables)	9 Months Ended
	Sep. 30, 2023
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, 2023, and December 31, 2022, were as follows: September 30, 2023 December 31, 2022 (dollars in thousands) Notional Amount Fair Value Notional Amount Fair Value Derivatives designated as hedging instruments Interest Rate Swap Agreements $ 2,000,000 $ 8,216 $ — $ — Derivatives not designated as hedging instruments Interest Rate Lock Commitments 11,764 113 3,860 58 Forward Commitments 11,376 68 3,256 6 Interest Rate Swap Agreements Receive Fixed/Pay Variable Swaps 2,005,276 ( 200,915 ) 1,821,433 ( 160,914 ) Pay Fixed/Receive Variable Swaps 2,005,276 200,855 1,821,433 38,785 Foreign Exchange Contracts 620 — 52,065 1,745 Conversion Rate Swap Agreement 1 137,110 — 124,752 NA 1 The conversion rate swap agreements were valued at zero as further reductions to the conversion rate were deemed neither probable nor reasonably estimable.
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, 2023, and December 31, 2022: September 30, 2023 December 31, 2022 Asset Liability Asset Liability (dollars in thousands) Derivatives Derivatives Derivatives Derivatives Derivatives designated as hedging instruments Interest Rate Swap Agreements $ 8,216 $ — $ — $ — Derivatives not designated as hedging instruments Interest Rate Lock Commitments 142 29 64 6 Forward Commitments 71 3 10 4 Interest Rate Swap Agreements 202,305 202,365 45,831 167,960 Foreign Exchange Contracts — — 1,812 67 Total $ 210,734 $ 202,397 $ 47,717 $ 168,037 1 Asset derivatives are included in other assets and liability derivatives are included in other liabilities in the consolidated statements of condition. 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.
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, 2023, and September 30, 2022: Location of Net Gains (Losses) Three Months Ended Nine Months Ended Recognized in the September 30, September 30, (dollars in thousands) Statements of Income 2023 2022 2023 2022 Derivatives designated as hedging instruments Recognized on Interest Rate Swap Agreements Interest Income on Investment Securities Available-for-Sale $ 4,954 $ — $ 4,954 $ — Recognized on Hedged Item Interest Income on Investment Securities Available-for-Sale ( 5,035 ) ( 5,035 ) $ — Recognized on Interest Rate Swap Agreements Interest and Fees on Loans and Leases 2,828 — 3,262 — Recognized on Hedged Item Interest and Fees on Loans and Leases ( 2,885 ) — ( 3,321 ) — Derivatives not designated as hedging instruments Interest Rate Lock Commitments Mortgage Banking 75 1 553 ( 1,012 ) Forward Commitments Mortgage Banking 199 289 260 2,510 Interest Rate Swap Agreements Other Noninterest Income 21 35 3 52 Foreign Exchange Contracts Other Noninterest Income 816 430 2,460 936 Conversion Rate Swap Agreement Investment Securities Gains (Losses), Net ( 798 ) — ( 1,362 ) — Total $ 175 $ 755 $ 1,774 $ 2,486
Schedule of derivative instruments in statement of financial position related to cumulative basis adjustment for fair value hedges	The following amounts were recorded on the consolidated statement of financial condition related to the cumulative basis adjustment for fair value hedges as of September 30, 2023: Derivative Financial Instruments Designated as Hedging Instruments Line Item in the Consolidated Statement of Condition Carrying Amount of the Hedged Assets Cumulative Amount of Fair Value Hedging Adjustment Included In the Carrying Amount of the Hedged Assets (dollars in thousands) September 30, 2023 September 30, 2023 Investment Securities, Available-for-Sale 1 $ 994,965 $ ( 5,035 ) Loans and Leases 2 996,679 ( 3,321 ) 1 These amounts were included in the fair value of closed portfolios of investment securities, available-for-sale used to designate hedging relationships in which the hedged item is the stated amount of assets in the closed portfolios anticipated to be outstanding for the designated hedge period. As of September 30, 2023 , the fair value of the closed portfolios used in these hedging relationships was $ 1.9 billion. 2 These amounts were included in the amortized cost basis of closed portfolios of loans used to designate hedging relationships in which the hedged item is the stated amount of assets in the closed portfolios anticipated to be outstanding for the designated hedge period. As of September 30, 2023 , the amortized cost basis of the closed portfolios used in these hedging relationships was $ 3.2 billion.

Commitments and Contingencies (

Commitments and Contingencies (Tables)	9 Months Ended
	Sep. 30, 2023
Commitments and Contingencies Disclosure [Abstract]
Credit Commitments	The Company’s credit commitments as of September 30, 2023, and December 31, 2022, were as follows: (dollars in thousands) September 30, December 31, Unfunded Commitments to Extend Credit $ 3,547,254 $ 3,592,872 Standby Letters of Credit 86,534 129,512 Commercial Letters of Credit 20,968 24,030 Total Credit Commitments $ 3,654,756 $ 3,746,414

Fair Value of Assets and Liab_2

Fair Value of Assets and Liabilities (Tables)	9 Months Ended
	Sep. 30, 2023
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, 2023, and December 31, 2022. Quoted Prices Significant Significant (dollars in thousands) (Level 1) (Level 2) (Level 3) Total September 30, 2023 Assets: Investment Securities Available-for-Sale Debt Securities Issued by the U.S. Treasury and Government $ 142,059 $ 71,397 $ — $ 213,456 Debt Securities Issued by States and Political Subdivisions — 60,602 — 60,602 Debt Securities Issued by U.S. Government-Sponsored — 1,640 — 1,640 Debt Securities Issued by Corporations — 649,140 — 649,140 Mortgage-Backed Securities: Residential - Government Agencies — 631,947 — 631,947 Residential - U.S. Government-Sponsored Enterprises — 699,349 — 699,349 Commercial - Government Agencies — 131,190 — 131,190 Total Mortgage-Backed Securities — 1,462,486 — 1,462,486 Total Investment Securities Available-for-Sale 142,059 2,245,265 — 2,387,324 Loans Held for Sale — 1,450 — 1,450 Mortgage Servicing Rights — — 685 685 Other Assets 51,435 — — 51,435 Derivatives 1 — 71 210,663 210,734 Total Assets Measured at Fair Value on a Recurring Basis as of $ 193,494 $ 2,246,786 $ 211,348 $ 2,651,628 Liabilities: Derivatives 1 $ — $ 3 $ 202,394 $ 202,397 Total Liabilities Measured at Fair Value on a Recurring Basis as of $ — $ 3 $ 202,394 $ 202,397 December 31, 2022 Assets: Investment Securities Available-for-Sale Debt Securities Issued by the U.S. Treasury $ 141,944 $ 91,962 $ — $ 233,906 Debt Securities Issued by States and Political Subdivisions — 95,265 — 95,265 Debt Securities Issued by — 48,628 — 48,628 Debt Securities Issued by Corporations — 794,658 — 794,658 Mortgage-Backed Securities: Residential - Government Agencies — 732,828 — 732,828 Residential - U.S. Government-Sponsored Enterprises — 793,871 — 793,871 Commercial - Government Agencies or Sponsored Agencies — 145,667 — 145,667 Total Mortgage-Backed Securities — 1,672,366 — 1,672,366 Total Investment Securities Available-for-Sale 141,944 2,702,879 — 2,844,823 Loans Held for Sale — 1,035 — 1,035 Mortgage Servicing Rights — — 717 717 Other Assets 47,755 — — 47,755 Derivatives 1 — 1,822 45,895 47,717 Total Assets Measured at Fair Value on a $ 189,699 $ 2,705,736 $ 46,612 $ 2,942,047 Liabilities: Derivatives 1 $ — $ 70 $ 167,967 $ 168,037 Total Liabilities Measured at Fair Value on a $ — $ 70 $ 167,967 $ 168,037 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, 2023, and September 30, 2022, the changes in Level 3 assets and liabilities measured at fair value on a recurring basis were as follows: (dollars in thousands) Mortgage 1 Net Derivative 2 Three Months Ended September 30, 2023 Balance as of July 1, 2023 $ 695 $ 202 Net Gains/(Losses) Included in Net Income ( 10 ) 7,878 Transfers to Loans Held for Sale — ( 187 ) Variation Margin Payments — 376 Balance as of September 30, 2023 $ 685 $ 8,269 Total Unrealized Net Gains (Losses) Included in Net Income Related to Assets Still Held as of September 30, 2023 $ — $ 7,878 Three Months Ended September 30, 2022 Balance as of July 1, 2022 $ 747 $ ( 82,948 ) Net Gains/(Losses) Included in Net Income ( 15 ) 36 Transfers to Loans Held for Sale — ( 284 ) Variation Margin Payments — ( 48,968 ) Balance as of September 30, 2022 $ 732 $ ( 132,164 ) Total Unrealized Net Gains (Losses) Included in Net Income Related to Assets Still Held as of September 30, 2022 $ — $ 36 Nine Months Ended September 30, 2023 Balance as of January 1, 2023 $ 717 ( 122,071 ) Realized and Unrealized Net Gains (Losses): Included in Net Income ( 32 ) 8,772 Transfers to Loans Held for Sale — ( 498 ) Variation Margin Payments — 122,066 Balance as of September 30, 2023 $ 685 8,269 Total Unrealized Net Gains (Losses) Included in Net Income Related to Assets Still Held as of September 30, 2023 $ — $ 8,772 Nine Months Ended September 30, 2022 Balance as of January 1, 2023 $ 800 $ 23,904 Realized and Unrealized Net Gains (Losses): Included in Net Income ( 68 ) ( 961 ) Transfers to Loans Held for Sale — ( 111 ) Variation Margin Payments — ( 154,996 ) Balance as of September 30, 2022 $ 732 $ ( 132,164 ) Total Unrealized Net Gains (Losses) Included in Net Income Related to Assets Still Held as of September 30, 2022 $ — $ ( 961 ) 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 not designated as hedging instruments are reported as a component of other noninterest income and interest rate swap agreements designated as hedging instruments are reported in interest 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, 2023, and December 31, 2022, the significant unobservable inputs used in the fair value measurements were as follows: (dollars in thousands) Valuation Description Range Weighted 1 Fair September 30, 2023 Mortgage Servicing Rights Discounted Cash Flow Constant Prepayment Rate 2.86 % - 18.44 % 3.81 % $ 27,108 Discount Rate 7.73 % - 11.02 % 10.13 % Net Derivative Assets and Liabilities: Interest Rate Lock Commitments Pricing Model Closing Ratio 83.50 % - 99.00 % 94.59 % $ 113 Interest Rate Swap Agreements Discounted Cash Flow Credit Factor 0.00 % - 8.04 % 0.01 % $ 8,155 December 31, 2022 Mortgage Servicing Rights Discounted Cash Flow Constant Prepayment Rate 2.81 % - 10.63 % 4.02 % $ 28,040 Discount Rate 8.70 % - 10.40 % 9.93 % $ — Net Derivative Assets and Liabilities: Interest Rate Lock Commitments Pricing Model Closing Ratio 84.10 % - 99.00 % 92.86 % $ 58 Interest Rate Swap Agreements Discounted Cash Flow Credit Factor 0.00 % - 0.49 % 0.01 % $ ( 122,129 ) 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, 2023, and December 31, 2022. (dollars in thousands) Fair Value Net Carrying Valuation September 30, 2023 Mortgage Servicing Rights - amortization method Level 3 $ 20,588 $ — December 31, 2022 Mortgage Servicing Rights - amortization method Level 3 $ 21,902 $ —
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, 2023, and December 31, 2022. (dollars in thousands) Aggregate Aggregate Aggregate September 30, 2023 Loans Held for Sale $ 1,450 $ 1,461 $ ( 11 ) December 31, 2022 Loans Held for Sale $ 1,035 $ 1,016 $ 19
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, 2023, and December 31, 2022. 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 of Des Moines 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 Significant Significant (dollars in thousands) Amount Fair Value (Level 1) (Level 2) (Level 3) September 30, 2023 Financial Instruments - Assets Investment Securities Held-to-Maturity $ 5,088,013 $ 4,104,469 $ 111,409 $ 3,993,060 $ — Loans 13,651,759 12,416,800 — — 12,416,800 Financial Instruments - Liabilities Time Deposits 2,659,014 2,627,361 — 2,627,361 — Securities Sold Under Agreements to Repurchase 150,490 151,963 — 151,963 — Other Debt 1 550,000 538,987 — 538,987 — December 31, 2022 Financial Instruments – Assets Investment Securities Held-to-Maturity $ 5,414,139 $ 4,615,393 $ 113,417 $ 4,501,976 $ — Loans 13,371,226 12,386,615 — — 12,386,615 Financial Instruments – Liabilities Time Deposits 1,705,737 1,679,777 — 1,679,777 — Securities Sold Under Agreements to Repurchase 725,490 718,614 — 718,614 — Other Debt 1 400,000 402,877 — 402,877 — 1 Excludes finance lease obligations.

Summary of Significant Accoun_3

Summary of Significant Accounting Policies - Additional Information (Details)	9 Months Ended
	Sep. 30, 2023
Summary Of Significant Accounting Policies [Line Items]
Change in accounting principle, accounting standards update, adoption date	Jan. 31, 2023
Change in accounting principle, accounting standards update, adopted [true false]	true
Accounting standards update [extensible enumeration]	ASU 2022-02

Cash and Cash Equivalents - Sch

Cash and Cash Equivalents - Schedule of Reconciliation of Cash and Cash Equivalents (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Cash and Cash Equivalents [Abstract]
Interest-Bearing Deposits in Other Banks	$ 4,676	$ 3,724
Funds Sold	386,086	81,364
Cash and Due From Banks	261,464	$ 316,679
Total Cash and Cash Equivalents	$ 652,226

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, 2023	Dec. 31, 2022
Available-for-Sale:
Available-for-Sale: Amortized Cost	$ 2,752,093	$ 3,172,436
Available-for-Sale: Gross Unrealized Gains	516	1,851
Available-for-Sale: Gross Unrealized Losses	(365,285)	(329,464)
Available-for-Sale: Fair Value	2,387,324	2,844,823
Held-to-Maturity:
Held-to-Maturity: Amortized Cost	5,088,013	5,414,139
Held-to-Maturity: Gross Unrealized Gains	5	43
Held-to-Maturity: Gross Unrealized Losses	(983,549)	(798,789)
Held-to-Maturity: Fair Value	4,104,469	4,615,393
Debt Securities Issued by the U.S. Treasury and Government Agencies
Available-for-Sale:
Available-for-Sale: Amortized Cost	228,181	248,335
Available-for-Sale: Gross Unrealized Gains	408	638
Available-for-Sale: Gross Unrealized Losses	(15,133)	(15,067)
Available-for-Sale: Fair Value	213,456	233,906
Held-to-Maturity:
Held-to-Maturity: Amortized Cost	131,710	131,619
Held-to-Maturity: Gross Unrealized Losses	(20,301)	(18,202)
Held-to-Maturity: Fair Value	111,409	113,417
Debt Securities Issued by States and Political Subdivisions
Available-for-Sale:
Available-for-Sale: Amortized Cost	73,722	107,689
Available-for-Sale: Gross Unrealized Gains		158
Available-for-Sale: Gross Unrealized Losses	(13,120)	(12,582)
Available-for-Sale: Fair Value	60,602	95,265
Debt Securities Issued by Government-Sponsored Enterprises
Available-for-Sale:
Available-for-Sale: Amortized Cost	1,757	48,807
Available-for-Sale: Gross Unrealized Losses	(117)	(179)
Available-for-Sale: Fair Value	1,640	48,628
Debt Securities Issued by Corporations
Available-for-Sale:
Available-for-Sale: Amortized Cost	706,693	850,585
Available-for-Sale: Gross Unrealized Gains	7	809
Available-for-Sale: Gross Unrealized Losses	(57,560)	(56,736)
Available-for-Sale: Fair Value	649,140	794,658
Held-to-Maturity:
Held-to-Maturity: Amortized Cost	11,788	17,014
Held-to-Maturity: Gross Unrealized Losses	(2,582)	(2,534)
Held-to-Maturity: Fair Value	9,206	14,480
Residential - Government Agencies
Available-for-Sale:
Available-for-Sale: Amortized Cost	740,652	828,798
Available-for-Sale: Gross Unrealized Gains	101	245
Available-for-Sale: Gross Unrealized Losses	(108,806)	(96,215)
Available-for-Sale: Fair Value	631,947	732,828
Held-to-Maturity:
Held-to-Maturity: Amortized Cost	1,712,317	1,848,239
Held-to-Maturity: Gross Unrealized Gains		35
Held-to-Maturity: Gross Unrealized Losses	(330,120)	(294,047)
Held-to-Maturity: Fair Value	1,382,197	1,554,227
Residential - U.S. Government-Sponsored Enterprises
Available-for-Sale:
Available-for-Sale: Amortized Cost	841,441	919,980
Available-for-Sale: Gross Unrealized Gains		1
Available-for-Sale: Gross Unrealized Losses	(142,092)	(126,110)
Available-for-Sale: Fair Value	699,349	793,871
Held-to-Maturity:
Held-to-Maturity: Amortized Cost	2,794,307	2,968,322
Held-to-Maturity: Gross Unrealized Gains	5	8
Held-to-Maturity: Gross Unrealized Losses	(519,138)	(397,055)
Held-to-Maturity: Fair Value	2,275,174	2,571,275
Commercial - Government Agencies or Sponsored Agencies
Available-for-Sale:
Available-for-Sale: Amortized Cost	159,647	168,242
Available-for-Sale: Gross Unrealized Losses	(28,457)	(22,575)
Available-for-Sale: Fair Value	131,190	145,667
Held-to-Maturity:
Held-to-Maturity: Amortized Cost	437,891	448,945
Held-to-Maturity: Gross Unrealized Losses	(111,408)	(86,951)
Held-to-Maturity: Fair Value	326,483	361,994
Mortgage-Backed Securities
Available-for-Sale:
Available-for-Sale: Amortized Cost	1,741,740	1,917,020
Available-for-Sale: Gross Unrealized Gains	101	246
Available-for-Sale: Gross Unrealized Losses	(279,355)	(244,900)
Available-for-Sale: Fair Value	1,462,486	1,672,366
Held-to-Maturity:
Held-to-Maturity: Amortized Cost	4,944,515	5,265,506
Held-to-Maturity: Gross Unrealized Gains	5	43
Held-to-Maturity: Gross Unrealized Losses	(960,666)	(778,053)
Held-to-Maturity: Fair Value	$ 3,983,854	$ 4,487,496

Investment Securities - Additio

Investment Securities - Additional Information (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023 USD ($) Security	Sep. 30, 2022 USD ($)	Sep. 30, 2023 USD ($) Security	Sep. 30, 2022 USD ($)	Dec. 31, 2022 USD ($)
Other Than Temporary Impairment Credit Losses Recognized In Earnings [Line Items]
Accrued interest receivable	$ 65,541		$ 65,541		$ 61,002
Realized loss on sale of investment securities	6,879	$ 2,147	9,981	$ 4,987
Carrying Value Of Investment Securities Pledged	$ 7,200,000		$ 7,200,000		4,100,000
Number of available for sale debt securities in unrealized loss positions | Security	399		399
Available-for-sale Securities
Other Than Temporary Impairment Credit Losses Recognized In Earnings [Line Items]
Accrued interest receivable	$ 9,900		$ 9,900		11,700
Realized loss on sale of investment securities	4,600
Held-to-maturity Securities
Other Than Temporary Impairment Credit Losses Recognized In Earnings [Line Items]
Accrued interest receivable	$ 10,100		$ 10,100		$ 9,200

Investment Securities - Analysi

Investment Securities - Analysis of the Contractual Maturities of Investment Securities (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Available-for-sale Securities, Debt Maturities, Single Maturity Date, Amortized Cost Basis Rolling Maturity[Abstract]
Due in One Year or Less	$ 1,798
Due After One Year Through Five Years	332,832
Due After Five Years Through Ten Years	598,290
Due After Ten Years	6,380
Amortized Cost, Total	939,300
Available-for-sale Securities, Debt Maturities, Single Maturity Date, Rolling Maturities [Abstract]
Available-for-Sale: Amortized Cost	2,752,093	$ 3,172,436
Due in One Year or Less	1,768
Due After One Year Through Five Years	309,375
Due After Five Years Through Ten Years	537,433
Due After Ten Years	4,866
Fair Value, Total	853,442
Available-for-Sale: Fair Value	2,387,324	2,844,823
Held-to-maturity Securities, Debt Maturities, Single Maturity Date, Amortized Cost Basis, Rolling Maturities (Abstract]
Due in One Year or Less	966
Due After One Year Through Five Years	82,244
Due After Five Year Through Ten Years	60,288
Amortized Cost, Total	143,498
Held-to-Maturity Securities, Debt Maturities, Single Maturity Date, Fair Value, Rolling Maturities [Abstract]
Due in One Year or Less	943
Due After One Year Through Five Years	71,390
Due After Five Year Through Ten Years	48,282
Fair Value, Total	120,615
Held-to-Maturity: Amortized Cost	5,088,013
Held-to-Maturity: Fair Value	4,104,469	4,615,393
Debt Securities Issued by Government Agencies
Available-for-sale Securities, Debt Maturities, Single Maturity Date, Rolling Maturities [Abstract]
Available-for-sale Securities: Amortized Cost	71,053
Available-for-sale Securities, Debt Securities Issued by Government Agencies and Mortgage-Backed Securities: Fair Value	71,396
Held-to-Maturity Securities, Debt Maturities, Single Maturity Date, Fair Value, Rolling Maturities [Abstract]
Available-for-sale Securities, Debt Securities Issued by Government Agencies and Mortgage-Backed Securities: Fair Value	71,396
Residential - Government Agencies
Available-for-sale Securities, Debt Maturities, Single Maturity Date, Rolling Maturities [Abstract]
Available-for-sale Securities: Amortized Cost	740,652
Available-for-Sale: Amortized Cost	740,652	828,798
Available-for-sale Securities, Debt Securities Issued by Government Agencies and Mortgage-Backed Securities: Fair Value	631,947
Available-for-Sale: Fair Value	631,947	732,828
Held-to-Maturity Securities, Debt Maturities, Single Maturity Date, Fair Value, Rolling Maturities [Abstract]
Held-to-Maturity: Mortgage-Backed Securities: Amortized Cost	1,712,317
Held-to-Maturity: Mortgage-Backed Securities: Amortized Cost	1,712,317
Available-for-sale Securities, Debt Securities Issued by Government Agencies and Mortgage-Backed Securities: Fair Value	631,947
Held-to-Maturity: Mortgage-Backed Securities: Fair Value	1,382,197
Held-to-Maturity: Fair Value	1,382,197	1,554,227
Residential - U.S. Government-Sponsored Enterprises
Available-for-sale Securities, Debt Maturities, Single Maturity Date, Rolling Maturities [Abstract]
Available-for-sale Securities: Amortized Cost	841,441
Available-for-Sale: Amortized Cost	841,441	919,980
Available-for-sale Securities, Debt Securities Issued by Government Agencies and Mortgage-Backed Securities: Fair Value	699,349
Available-for-Sale: Fair Value	699,349	793,871
Held-to-Maturity Securities, Debt Maturities, Single Maturity Date, Fair Value, Rolling Maturities [Abstract]
Held-to-Maturity: Mortgage-Backed Securities: Amortized Cost	2,794,307
Held-to-Maturity: Mortgage-Backed Securities: Amortized Cost	2,794,307
Available-for-sale Securities, Debt Securities Issued by Government Agencies and Mortgage-Backed Securities: Fair Value	699,349
Held-to-Maturity: Mortgage-Backed Securities: Fair Value	2,275,174
Held-to-Maturity: Fair Value	2,275,174	2,571,275
Commercial - Government Agencies or Sponsored Agencies
Available-for-sale Securities, Debt Maturities, Single Maturity Date, Rolling Maturities [Abstract]
Available-for-sale Securities: Amortized Cost	159,647
Available-for-Sale: Amortized Cost	159,647	168,242
Available-for-sale Securities, Debt Securities Issued by Government Agencies and Mortgage-Backed Securities: Fair Value	131,190
Available-for-Sale: Fair Value	131,190	145,667
Held-to-Maturity Securities, Debt Maturities, Single Maturity Date, Fair Value, Rolling Maturities [Abstract]
Held-to-Maturity: Mortgage-Backed Securities: Amortized Cost	437,891
Held-to-Maturity: Mortgage-Backed Securities: Amortized Cost	437,891
Available-for-sale Securities, Debt Securities Issued by Government Agencies and Mortgage-Backed Securities: Fair Value	131,190
Held-to-Maturity: Mortgage-Backed Securities: Fair Value	326,483
Held-to-Maturity: Fair Value	326,483	361,994
Mortgage-Backed Securities
Available-for-sale Securities, Debt Maturities, Single Maturity Date, Rolling Maturities [Abstract]
Available-for-sale Securities: Amortized Cost	1,741,740
Available-for-Sale: Amortized Cost	1,741,740	1,917,020
Available-for-sale Securities, Debt Securities Issued by Government Agencies and Mortgage-Backed Securities: Fair Value	1,462,486
Available-for-Sale: Fair Value	1,462,486	1,672,366
Held-to-Maturity Securities, Debt Maturities, Single Maturity Date, Fair Value, Rolling Maturities [Abstract]
Held-to-Maturity: Mortgage-Backed Securities: Amortized Cost	4,944,515
Held-to-Maturity: Mortgage-Backed Securities: Amortized Cost	4,944,515
Available-for-sale Securities, Debt Securities Issued by Government Agencies and Mortgage-Backed Securities: Fair Value	1,462,486
Held-to-Maturity: Mortgage-Backed Securities: Fair Value	3,983,854
Held-to-Maturity: Fair Value	$ 3,983,854	$ 4,487,496

Investment Securities - Sched_2

Investment Securities - Schedule of Losses From Sales of Investment Securities (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Investments, Debt and Equity Securities [Abstract]
Gross Gains on Sales of Investment Securities	$ 145	$ 0	$ 145	$ 0
Gross Losses on Sales of Investment Securities	(6,879)	(2,147)	(9,981)	(4,987)
Total Losses on Sales of Investment Securities	$ (6,734)	$ (2,147)	$ (9,836)	$ (4,987)

Investment Securities - Sched_3

Investment Securities - Schedule of AFS Debt Securities in an Unrealized Loss Position (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Schedule Of Available For Sale Securities [Line Items]
Less Than 12 Months, Fair Value	$ 342,728	$ 1,206,152
Less Than 12 Months, Gross Unrealized Losses	(2,674)	(76,494)
12 Months or Longer, Fair Value	1,960,562	1,449,762
12 Months or Longer, Gross Unrealized Losses	(362,611)	(252,970)
Total Fair Value	2,303,290	2,655,914
Total Gross Unrealized Losses	(365,285)	(329,464)
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	8,272	28,574
Less Than 12 Months, Gross Unrealized Losses	(24)	(1,118)
12 Months or Longer, Fair Value	150,513	127,841
12 Months or Longer, Gross Unrealized Losses	(15,109)	(13,949)
Total Fair Value	158,785	156,415
Total Gross Unrealized Losses	(15,133)	(15,067)
Debt Securities Issued by States and Political Subdivisions
Schedule Of Available For Sale Securities [Line Items]
Less Than 12 Months, Fair Value	236	11,341
Less Than 12 Months, Gross Unrealized Losses	(8)	(1,240)
12 Months or Longer, Fair Value	60,152	49,985
12 Months or Longer, Gross Unrealized Losses	(13,112)	(11,342)
Total Fair Value	60,388	61,326
Total Gross Unrealized Losses	(13,120)	(12,582)
Debt Securities Issued by Government-Sponsored Enterprises
Schedule Of Available For Sale Securities [Line Items]
Less Than 12 Months, Fair Value	0	47,825
Less Than 12 Months, Gross Unrealized Losses	0	(108)
12 Months or Longer, Fair Value	1,639	803
12 Months or Longer, Gross Unrealized Losses	(117)	(71)
Total Fair Value	1,639	48,628
Total Gross Unrealized Losses	(117)	(179)
Debt Securities Issued by Corporations
Schedule Of Available For Sale Securities [Line Items]
Less Than 12 Months, Fair Value	322,435	438,225
Less Than 12 Months, Gross Unrealized Losses	(2,565)	(7,995)
12 Months or Longer, Fair Value	301,697	284,350
12 Months or Longer, Gross Unrealized Losses	(54,995)	(48,741)
Total Fair Value	624,132	722,575
Total Gross Unrealized Losses	(57,560)	(56,736)
Residential - Government Agencies
Schedule Of Available For Sale Securities [Line Items]
Less Than 12 Months, Fair Value	11,455	386,809
Less Than 12 Months, Gross Unrealized Losses	(70)	(30,492)
12 Months or Longer, Fair Value	616,352	340,824
12 Months or Longer, Gross Unrealized Losses	(108,736)	(65,723)
Total Fair Value	627,807	727,633
Total Gross Unrealized Losses	(108,806)	(96,215)
Residential - U.S. Government-Sponsored Enterprises
Schedule Of Available For Sale Securities [Line Items]
Less Than 12 Months, Fair Value	330	194,684
Less Than 12 Months, Gross Unrealized Losses	(7)	(22,294)
12 Months or Longer, Fair Value	699,020	598,986
12 Months or Longer, Gross Unrealized Losses	(142,085)	(103,816)
Total Fair Value	699,350	793,670
Total Gross Unrealized Losses	(142,092)	(126,110)
Commercial - Government Agencies or Sponsored Agencies
Schedule Of Available For Sale Securities [Line Items]
Less Than 12 Months, Fair Value	0	98,694
Less Than 12 Months, Gross Unrealized Losses	0	(13,247)
12 Months or Longer, Fair Value	131,189	46,973
12 Months or Longer, Gross Unrealized Losses	(28,457)	(9,328)
Total Fair Value	131,189	145,667
Total Gross Unrealized Losses	(28,457)	(22,575)
Mortgage-Backed Securities
Schedule Of Available For Sale Securities [Line Items]
Less Than 12 Months, Fair Value	11,785	680,187
Less Than 12 Months, Gross Unrealized Losses	(77)	(66,033)
12 Months or Longer, Fair Value	1,446,561	986,783
12 Months or Longer, Gross Unrealized Losses	(279,278)	(178,867)
Total Fair Value	1,458,346	1,666,970
Total Gross Unrealized Losses	$ (279,355)	$ (244,900)

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, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Investments, Debt and Equity Securities [Abstract]
Taxable	$ 46,367	$ 37,231	$ 140,718	$ 109,830
Non-Taxable	23	7	189	31
Total Interest Income from Investment Securities	$ 46,390	$ 37,238	$ 140,907	$ 109,861

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, 2023	Dec. 31, 2022
Investments, Debt and Equity Securities [Abstract]
Federal Home Loan Bank of Des Moines Stock	$ 32,000	$ 26,000
Federal Reserve Bank Stock	27,400	27,065
Total	$ 59,400	$ 53,065

Loans and Leases and the Allo_3

Loans and Leases and the Allowance for Credit Losses - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Accounts Notes And Loans Receivable [Line Items]
Net gains (loss) related to sales of residential mortgage loans			$ 300	$ 200
Accrued interest receivable	$ 65,541		65,541		$ 61,002
Revolving loans, converted to term loan during the period			$ 7,400		6,200
Number of days non-accrual loans are not past due			30 days
Consumer mortgage loans collateralized by residential real estate property that are in the process of foreclosure	4,700		$ 4,700
Pass | Residential Mortgage
Accounts Notes And Loans Receivable [Line Items]
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%
Pass | Home Equity
Accounts Notes And Loans Receivable [Line Items]
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%
Maximum current combined loan-to-value ratio for residential mortgage and home equity loans to be considered as pass (as a percent)			60%
Accrued Interest Receivable
Accounts Notes And Loans Receivable [Line Items]
Accrued interest receivable	45,000		$ 45,000		$ 40,100
Maximum
Accounts Notes And Loans Receivable [Line Items]
Net gains (loss) related to sales of residential mortgage loans	$ 100	$ 100
Consumer | Classified
Accounts Notes And Loans Receivable [Line Items]
Number of days past due for loans and leases in classified credit quality indicator			90 days

Loans and Leases and the Allo_4

Loans and Leases and the Allowance for Credit Losses - Schedule of Loan and Lease Portfolio (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Accounts Notes And Loans Receivable [Line Items]
Loans and Leases	$ 13,919,491	$ 13,646,420
Commercial
Accounts Notes And Loans Receivable [Line Items]
Loans and Leases	5,679,469	5,464,503
Commercial | Commercial and Industrial
Accounts Notes And Loans Receivable [Line Items]
Loans and Leases	1,569,572	1,389,066
Commercial | Commercial Mortgage
Accounts Notes And Loans Receivable [Line Items]
Loans and Leases	3,784,339	3,725,542
Commercial | Construction
Accounts Notes And Loans Receivable [Line Items]
Loans and Leases	251,507	260,825
Commercial | Paycheck Protection Program
Accounts Notes And Loans Receivable [Line Items]
Loans and Leases	12,529	19,579
Commercial | Lease Financing
Accounts Notes And Loans Receivable [Line Items]
Loans and Leases	61,522	69,491
Consumer
Accounts Notes And Loans Receivable [Line Items]
Loans and Leases	8,240,022	8,181,917
Consumer | Residential Mortgage
Accounts Notes And Loans Receivable [Line Items]
Loans and Leases	4,699,140	4,653,072
Consumer | Home Equity
Accounts Notes And Loans Receivable [Line Items]
Loans and Leases	2,285,974	2,225,950
Consumer | Automobile
Accounts Notes And Loans Receivable [Line Items]
Loans and Leases	856,113	870,396
Consumer | Other
Accounts Notes And Loans Receivable [Line Items]
Loans and Leases	$ 398,795	$ 432,499

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, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Allowance for Credit Losses:
Balance at Beginning of Period	$ 145,367	$ 148,512	$ 144,439	$ 157,821
Loans and Leases Charged-Off	(3,617)	(2,865)	(11,437)	(10,119)
Recoveries on Loans and Leases Previously Charged-Off	1,568	1,718	5,343	6,855
Net Loans and Leases Recovered (Charged-Off)	(2,049)	(1,147)	(6,094)	(3,264)
Provision for Credit Losses	1,945	(929)	6,918	(8,121)
Balance at End of Period	145,263	146,436	145,263	146,436
Commercial
Allowance for Credit Losses:
Balance at Beginning of Period	63,941	61,826	63,900	64,950
Loans and Leases Charged-Off	(294)	(147)	(758)	(729)
Recoveries on Loans and Leases Previously Charged-Off	72	45	225	465
Net Loans and Leases Recovered (Charged-Off)	(222)	(102)	(533)	(264)
Provision for Credit Losses	4,283	157	4,635	(2,805)
Balance at End of Period	68,002	61,881	68,002	61,881
Consumer
Allowance for Credit Losses:
Balance at Beginning of Period	81,426	86,686	80,539	92,871
Loans and Leases Charged-Off	(3,323)	(2,718)	(10,679)	(9,390)
Recoveries on Loans and Leases Previously Charged-Off	1,496	1,673	5,118	6,390
Net Loans and Leases Recovered (Charged-Off)	(1,827)	(1,045)	(5,561)	(3,000)
Provision for Credit Losses	(2,338)	(1,086)	2,283	(5,316)
Balance at End of Period	$ 77,261	$ 84,555	$ 77,261	$ 84,555

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, 2023	Dec. 31, 2022
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	$ 1,696,524	$ 3,141,436
Fiscal Year Before Latest Fiscal Year	2,768,270	2,898,564
Two Years Before Latest Fiscal Year	2,581,259	2,183,088
Three Years Before Latest Fiscal Year	1,717,875	815,263
Four Years Before Latest Fiscal Year	696,863	388,817
Prior	1,710,919	1,647,925
Revolving Loans	2,705,343	2,532,777
Revolving Loans Converted to Term Loans	42,438	38,550
Total Loans and Leases	13,919,491	13,646,420
Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	1,150,061	1,722,502
Fiscal Year Before Latest Fiscal Year	1,492,206	1,252,561
Two Years Before Latest Fiscal Year	1,058,708	1,015,759
Three Years Before Latest Fiscal Year	639,836	369,910
Four Years Before Latest Fiscal Year	314,225	188,165
Prior	563,997	593,643
Revolving Loans	459,938	321,787
Revolving Loans Converted to Term Loans	498	176
Total Loans and Leases	5,679,469	5,464,503
Commercial | Commercial and Industrial
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	332,112	368,316
Fiscal Year Before Latest Fiscal Year	279,934	348,391
Two Years Before Latest Fiscal Year	250,323	225,294
Three Years Before Latest Fiscal Year	159,219	59,127
Four Years Before Latest Fiscal Year	43,368	48,539
Prior	90,389	78,265
Revolving Loans	413,729	260,958
Revolving Loans Converted to Term Loans	498	176
Total Loans and Leases	1,569,572	1,389,066
Commercial | Commercial and Industrial | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	277,427	360,748
Fiscal Year Before Latest Fiscal Year	271,993	348,300
Two Years Before Latest Fiscal Year	242,363	224,264
Three Years Before Latest Fiscal Year	152,581	59,127
Four Years Before Latest Fiscal Year	42,673	46,799
Prior	82,144	71,906
Revolving Loans	369,945	257,349
Revolving Loans Converted to Term Loans	483	155
Total Loans and Leases	1,439,609	1,368,648
Commercial | Commercial and Industrial | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	42,774	273
Fiscal Year Before Latest Fiscal Year	5,157	0
Two Years Before Latest Fiscal Year	0	0
Three Years Before Latest Fiscal Year	0	0
Four Years Before Latest Fiscal Year	695	96
Prior	0	92
Revolving Loans	39,956	1,357
Revolving Loans Converted to Term Loans	0	0
Total Loans and Leases	88,582	1,818
Commercial | Commercial and Industrial | Classified
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	11,911	7,295
Fiscal Year Before Latest Fiscal Year	2,784	91
Two Years Before Latest Fiscal Year	7,960	1,030
Three Years Before Latest Fiscal Year	6,638	0
Four Years Before Latest Fiscal Year	0	1,644
Prior	8,245	6,267
Revolving Loans	3,828	2,252
Revolving Loans Converted to Term Loans	15	21
Total Loans and Leases	41,381	18,600
Commercial | Paycheck Protection Program
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	0	0
Fiscal Year Before Latest Fiscal Year	0	5,359
Two Years Before Latest Fiscal Year	2,445	14,220
Three Years Before Latest Fiscal Year	10,084	0
Four Years Before Latest Fiscal Year	0	0
Prior	0	0
Revolving Loans	0	0
Revolving Loans Converted to Term Loans	0	0
Total Loans and Leases	12,529	19,579
Commercial | Paycheck Protection Program | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	0	0
Fiscal Year Before Latest Fiscal Year	0	5,359
Two Years Before Latest Fiscal Year	2,445	14,220
Three Years Before Latest Fiscal Year	10,084	0
Four Years Before Latest Fiscal Year	0	0
Prior	0	0
Revolving Loans	0	0
Revolving Loans Converted to Term Loans	0	0
Total Loans and Leases	12,529	19,579
Commercial | Commercial Mortgage
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	789,670	1,212,720
Fiscal Year Before Latest Fiscal Year	1,066,158	810,996
Two Years Before Latest Fiscal Year	715,136	727,704
Three Years Before Latest Fiscal Year	458,451	284,177
Four Years Before Latest Fiscal Year	247,969	132,537
Prior	464,165	508,637
Revolving Loans	42,790	48,771
Revolving Loans Converted to Term Loans	0	0
Total Loans and Leases	3,784,339	3,725,542
Commercial | Commercial Mortgage | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	756,211	1,182,831
Fiscal Year Before Latest Fiscal Year	1,004,342	771,375
Two Years Before Latest Fiscal Year	713,794	691,054
Three Years Before Latest Fiscal Year	441,404	283,553
Four Years Before Latest Fiscal Year	247,429	131,055
Prior	435,257	494,924
Revolving Loans	42,790	48,771
Revolving Loans Converted to Term Loans	0	0
Total Loans and Leases	3,641,227	3,603,563
Commercial | Commercial Mortgage | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	30,463	29,707
Fiscal Year Before Latest Fiscal Year	61,654	37,657
Two Years Before Latest Fiscal Year	0	28,105
Three Years Before Latest Fiscal Year	3,908	0
Four Years Before Latest Fiscal Year	307	1,482
Prior	13,551	5,014
Revolving Loans	0	0
Revolving Loans Converted to Term Loans	0	0
Total Loans and Leases	109,883	101,965
Commercial | Commercial Mortgage | Classified
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	2,996	182
Fiscal Year Before Latest Fiscal Year	162	1,964
Two Years Before Latest Fiscal Year	1,342	8,545
Three Years Before Latest Fiscal Year	13,139	624
Four Years Before Latest Fiscal Year	233	0
Prior	15,357	8,699
Revolving Loans	0	0
Revolving Loans Converted to Term Loans	0	0
Total Loans and Leases	33,229	20,014
Commercial | Construction
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	20,606	124,507
Fiscal Year Before Latest Fiscal Year	132,155	69,992
Two Years Before Latest Fiscal Year	76,109	37,133
Three Years Before Latest Fiscal Year	2,820	16,838
Four Years Before Latest Fiscal Year	16,101	0
Prior	297	297
Revolving Loans	3,419	12,058
Revolving Loans Converted to Term Loans	0	0
Total Loans and Leases	251,507	260,825
Commercial | Construction | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	20,606	124,507
Fiscal Year Before Latest Fiscal Year	132,155	69,992
Two Years Before Latest Fiscal Year	76,109	37,133
Three Years Before Latest Fiscal Year	2,820	16,838
Four Years Before Latest Fiscal Year	16,101	0
Prior	297	297
Revolving Loans	3,419	12,058
Revolving Loans Converted to Term Loans	0	0
Total Loans and Leases	251,507	260,825
Commercial | Lease Financing
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	7,673	16,959
Fiscal Year Before Latest Fiscal Year	13,959	17,823
Two Years Before Latest Fiscal Year	14,695	11,408
Three Years Before Latest Fiscal Year	9,262	9,768
Four Years Before Latest Fiscal Year	6,787	7,089
Prior	9,146	6,444
Revolving Loans	0	0
Revolving Loans Converted to Term Loans	0	0
Total Loans and Leases	61,522	69,491
Commercial | Lease Financing | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	7,046	16,959
Fiscal Year Before Latest Fiscal Year	13,905	17,823
Two Years Before Latest Fiscal Year	14,570	11,408
Three Years Before Latest Fiscal Year	9,160	9,768
Four Years Before Latest Fiscal Year	6,787	6,379
Prior	8,646	6,444
Revolving Loans	0	0
Revolving Loans Converted to Term Loans	0	0
Total Loans and Leases	60,114	68,781
Commercial | Lease Financing | Classified
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	627	0
Fiscal Year Before Latest Fiscal Year	54	0
Two Years Before Latest Fiscal Year	125	0
Three Years Before Latest Fiscal Year	102	0
Four Years Before Latest Fiscal Year	0	710
Prior	500	0
Revolving Loans	0	0
Revolving Loans Converted to Term Loans	0	0
Total Loans and Leases	1,408	710
Consumer
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	546,463	1,418,934
Fiscal Year Before Latest Fiscal Year	1,276,064	1,646,003
Two Years Before Latest Fiscal Year	1,522,551	1,167,329
Three Years Before Latest Fiscal Year	1,078,039	445,353
Four Years Before Latest Fiscal Year	382,638	200,652
Prior	1,146,922	1,054,282
Revolving Loans	2,245,405	2,210,990
Revolving Loans Converted to Term Loans	41,940	38,374
Total Loans and Leases	8,240,022	8,181,917
Consumer | Residential Mortgage
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	267,172	827,909
Fiscal Year Before Latest Fiscal Year	799,565	1,304,831
Two Years Before Latest Fiscal Year	1,257,550	1,035,285
Three Years Before Latest Fiscal Year	988,296	321,208
Four Years Before Latest Fiscal Year	306,197	138,766
Prior	1,080,360	1,025,073
Revolving Loans	0	0
Revolving Loans Converted to Term Loans	0	0
Total Loans and Leases	4,699,140	4,653,072
Consumer | Residential Mortgage | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	267,172	827,909
Fiscal Year Before Latest Fiscal Year	799,565	1,304,831
Two Years Before Latest Fiscal Year	1,257,550	1,035,285
Three Years Before Latest Fiscal Year	988,296	321,208
Four Years Before Latest Fiscal Year	306,197	138,214
Prior	1,078,785	1,023,841
Revolving Loans	0	0
Revolving Loans Converted to Term Loans	0	0
Total Loans and Leases	4,697,565	4,651,288
Consumer | Residential Mortgage | Classified
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	0	0
Fiscal Year Before Latest Fiscal Year	0	0
Two Years Before Latest Fiscal Year	0	0
Three Years Before Latest Fiscal Year	0	0
Four Years Before Latest Fiscal Year	0	552
Prior	1,575	1,232
Revolving Loans	0	0
Revolving Loans Converted to Term Loans	0	0
Total Loans and Leases	1,575	1,784
Consumer | Home Equity Loan
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	0	0
Fiscal Year Before Latest Fiscal Year	0	0
Two Years Before Latest Fiscal Year	0	0
Three Years Before Latest Fiscal Year	0	0
Four Years Before Latest Fiscal Year	0	0
Prior	44	915
Revolving Loans	2,243,990	2,187,703
Revolving Loans Converted to Term Loans	41,940	37,332
Total Loans and Leases	2,285,974	2,225,950
Consumer | Home Equity Loan | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	0	0
Fiscal Year Before Latest Fiscal Year	0	0
Two Years Before Latest Fiscal Year	0	0
Three Years Before Latest Fiscal Year	0	0
Four Years Before Latest Fiscal Year	0	0
Prior	44	890
Revolving Loans	2,242,699	2,186,598
Revolving Loans Converted to Term Loans	40,870	36,114
Total Loans and Leases	2,283,613	2,223,602
Consumer | Home Equity Loan | Classified
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	0	0
Fiscal Year Before Latest Fiscal Year	0	0
Two Years Before Latest Fiscal Year	0	0
Three Years Before Latest Fiscal Year	0	0
Four Years Before Latest Fiscal Year	0	0
Prior	0	25
Revolving Loans	1,291	1,105
Revolving Loans Converted to Term Loans	1,070	1,218
Total Loans and Leases	2,361	2,348
Consumer | Automobile
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	205,098	405,561
Fiscal Year Before Latest Fiscal Year	326,113	216,299
Two Years Before Latest Fiscal Year	164,863	100,631
Three Years Before Latest Fiscal Year	73,290	84,095
Four Years Before Latest Fiscal Year	55,202	45,393
Prior	31,547	18,417
Revolving Loans	0	0
Revolving Loans Converted to Term Loans	0	0
Total Loans and Leases	856,113	870,396
Consumer | Automobile | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	205,059	405,440
Fiscal Year Before Latest Fiscal Year	326,054	216,039
Two Years Before Latest Fiscal Year	164,714	100,608
Three Years Before Latest Fiscal Year	73,234	84,052
Four Years Before Latest Fiscal Year	55,196	45,301
Prior	31,464	18,366
Revolving Loans	0	0
Revolving Loans Converted to Term Loans	0	0
Total Loans and Leases	855,721	869,806
Consumer | Automobile | Classified
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	39	121
Fiscal Year Before Latest Fiscal Year	59	260
Two Years Before Latest Fiscal Year	149	23
Three Years Before Latest Fiscal Year	56	43
Four Years Before Latest Fiscal Year	6	92
Prior	83	51
Revolving Loans	0	0
Revolving Loans Converted to Term Loans	0	0
Total Loans and Leases	392	590
Consumer | Other Loans
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	74,193	185,464
Fiscal Year Before Latest Fiscal Year	150,386	124,873
Two Years Before Latest Fiscal Year	100,138	31,413
Three Years Before Latest Fiscal Year	16,453	40,050
Four Years Before Latest Fiscal Year	21,239	16,493
Prior	34,971	9,877
Revolving Loans	1,415	23,287
Revolving Loans Converted to Term Loans	0	1,042
Total Loans and Leases	398,795	432,499
Consumer | Other Loans | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	74,075	185,347
Fiscal Year Before Latest Fiscal Year	150,228	124,759
Two Years Before Latest Fiscal Year	99,977	31,343
Three Years Before Latest Fiscal Year	16,432	39,902
Four Years Before Latest Fiscal Year	21,154	16,364
Prior	34,871	9,853
Revolving Loans	1,415	23,228
Revolving Loans Converted to Term Loans	0	1,020
Total Loans and Leases	398,152	431,816
Consumer | Other Loans | Classified
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	118	117
Fiscal Year Before Latest Fiscal Year	158	114
Two Years Before Latest Fiscal Year	161	70
Three Years Before Latest Fiscal Year	21	148
Four Years Before Latest Fiscal Year	85	129
Prior	100	24
Revolving Loans	0	59
Revolving Loans Converted to Term Loans	0	22
Total Loans and Leases	$ 643	$ 683

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, 2023	Dec. 31, 2022
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	$ 13,919,491	$ 13,646,420
Non-Accrual	10,479	11,607
Total Past Due and Non-Accrual	42,038	42,479
Total Loans and Leases	13,919,491	13,646,420
Non-Accrual Loans and Leases that are Current	4,544	5,739
Commercial
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	5,679,469	5,464,503
Non-Accrual	3,039	3,346
Total Past Due and Non-Accrual	4,153	3,607
Total Loans and Leases	5,679,469	5,464,503
Non-Accrual Loans and Leases that are Current	3,039	3,346
Commercial | Commercial and Industrial
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	1,569,572	1,389,066
Non-Accrual	43	37
Total Past Due and Non-Accrual	1,157	298
Total Loans and Leases	1,569,572	1,389,066
Non-Accrual Loans and Leases that are Current	43	37
Commercial | Paycheck Protection Program
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	12,529	19,579
Non-Accrual	0	0
Total Past Due and Non-Accrual	0	0
Total Loans and Leases	12,529	19,579
Non-Accrual Loans and Leases that are Current	0	0
Commercial | Commercial Mortgage
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	3,784,339	3,725,542
Non-Accrual	2,996	3,309
Total Past Due and Non-Accrual	2,996	3,309
Total Loans and Leases	3,784,339	3,725,542
Non-Accrual Loans and Leases that are Current	2,996	3,309
Commercial | Construction
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	251,507	260,825
Non-Accrual	0	0
Total Past Due and Non-Accrual	0	0
Total Loans and Leases	251,507	260,825
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	61,522	69,491
Non-Accrual	0	0
Total Past Due and Non-Accrual	0	0
Total Loans and Leases	61,522	69,491
Non-Accrual Loans and Leases that are Current	0	0
Consumer
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	8,240,022	8,181,917
Non-Accrual	7,440	8,261
Total Past Due and Non-Accrual	37,885	38,872
Total Loans and Leases	8,240,022	8,181,917
Non-Accrual Loans and Leases that are Current	1,505	2,393
Consumer | Residential Mortgage
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	4,699,140	4,653,072
Non-Accrual	3,706	4,239
Total Past Due and Non-Accrual	11,278	10,405
Total Loans and Leases	4,699,140	4,653,072
Non-Accrual Loans and Leases that are Current	765	1,729
Consumer | Home Equity
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Non-Accrual	3,734	4,022
Total Past Due and Non-Accrual	11,063	8,294
Total Loans and Leases	2,285,974	2,225,950
Non-Accrual Loans and Leases that are Current	740	664
Consumer | Automobile
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	856,113	870,396
Non-Accrual	0	0
Total Past Due and Non-Accrual	11,554	15,870
Total Loans and Leases	856,113	870,396
Non-Accrual Loans and Leases that are Current	0	0
Consumer | Other
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Non-Accrual	0	0
Total Past Due and Non-Accrual	3,990	4,303
Total Loans and Leases	398,795	432,499
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	19,627	20,518
30 - 59 Days Past Due | Commercial
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	661	252
30 - 59 Days Past Due | Commercial | Commercial and Industrial
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	661	252
30 - 59 Days Past Due | Commercial | Paycheck Protection Program
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	0	0
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 | Consumer
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	18,966	20,266
30 - 59 Days Past Due | Consumer | Residential Mortgage
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	3,176	3,016
30 - 59 Days Past Due | Consumer | Home Equity
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	3,407	1,639
30 - 59 Days Past Due | Consumer | Automobile
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	10,072	13,293
30 - 59 Days Past Due | Consumer | Other
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	2,311	2,318
60 - 89 Days Past Due
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	5,205	4,980
60 - 89 Days Past Due | Commercial
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	453	9
60 - 89 Days Past Due | Commercial | Commercial and Industrial
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	453	9
60 - 89 Days Past Due | Commercial | Paycheck Protection Program
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	0	0
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 | Consumer
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	4,752	4,971
60 - 89 Days Past Due | Consumer | Residential Mortgage
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	877	721
60 - 89 Days Past Due | Consumer | Home Equity
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	1,750	960
60 - 89 Days Past Due | Consumer | Automobile
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	1,089	1,988
60 - 89 Days Past Due | Consumer | Other
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	1,036	1,302
Past Due 90 Days or More
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	6,727	5,374
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 | Paycheck Protection Program
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 | Consumer
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	6,727	5,374
Past Due 90 Days or More | Consumer | Residential Mortgage
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	3,519	2,429
Past Due 90 Days or More | Consumer | Home Equity
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	2,172	1,673
Past Due 90 Days or More | Consumer | Automobile
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	393	589
Past Due 90 Days or More | Consumer | Other
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	643	683
Current
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	13,877,453	13,603,941
Current | Commercial
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	5,675,316	5,460,896
Current | Commercial | Commercial and Industrial
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	1,568,415	1,388,768
Current | Commercial | Paycheck Protection Program
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	12,529	19,579
Current | Commercial | Commercial Mortgage
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	3,781,343	3,722,233
Current | Commercial | Construction
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	251,507	260,825
Current | Commercial | Lease Financing
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	61,522	69,491
Current | Consumer
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	8,202,137	8,143,045
Current | Consumer | Residential Mortgage
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	4,687,862	4,642,667
Current | Consumer | Home Equity
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	2,274,911	2,217,656
Current | Consumer | Automobile
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	844,559	854,526
Current | Consumer | Other
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	$ 394,805	$ 428,196

Loans and Leases and the Allo_8

Loans and Leases and the Allowance for Credit Losses - Schedule of Aging Analysis by Class of Loan and Lease Portfolio (Parenthetical) (Details)	9 Months Ended
	Sep. 30, 2023
Loans And Leases And Allowance For Loan And Lease Losses [Abstract]
Number of days non-accrual loans and leases are not past due	30 days

Loans and Leases and the Allo_9

Loans and Leases and the Allowance for Credit Losses - Schedule of Non-Accrual Loans and Leases (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Financing Receivable Nonaccrual Status [Line Items]
Non-accrual loans with a related ACL	$ 7,483	$ 8,298
Non-accrual loans without a related ACL	2,996	3,309
Total Non-accrual loans	10,479	11,607
Commercial
Financing Receivable Nonaccrual Status [Line Items]
Non-accrual loans with a related ACL	43	37
Non-accrual loans without a related ACL	2,996	3,309
Total Non-accrual loans	3,039	3,346
Commercial | Commercial and Industrial
Financing Receivable Nonaccrual Status [Line Items]
Non-accrual loans with a related ACL	43	37
Non-accrual loans without a related ACL	0	0
Total Non-accrual loans	43	37
Commercial | Commercial Mortgage
Financing Receivable Nonaccrual Status [Line Items]
Non-accrual loans with a related ACL	0	0
Non-accrual loans without a related ACL	2,996	3,309
Total Non-accrual loans	2,996	3,309
Consumer
Financing Receivable Nonaccrual Status [Line Items]
Non-accrual loans with a related ACL	7,440	8,261
Non-accrual loans without a related ACL	0	0
Total Non-accrual loans	7,440	8,261
Consumer | Residential Mortgage
Financing Receivable Nonaccrual Status [Line Items]
Non-accrual loans with a related ACL	3,706	4,239
Non-accrual loans without a related ACL	0	0
Total Non-accrual loans	3,706	4,239
Consumer | Home Equity
Financing Receivable Nonaccrual Status [Line Items]
Non-accrual loans with a related ACL	3,734	4,022
Non-accrual loans without a related ACL	0	0
Total Non-accrual loans	$ 3,734	$ 4,022

Loans and Leases and the All_10

Loans and Leases and the Allowance for Credit Losses - Schedule of Amortized Cost Basis of Loan Modifications to Borrowers Experiencing Financial Difficulty (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2023
Financing Receivable, Modified [Line Items]
Amortized cost basis of loan modifications	$ 4,338	$ 16,300
Percentage of total class of loans and leases	0.03%	0.12%
Term Extension
Financing Receivable, Modified [Line Items]
Amortized cost basis of loan modifications	$ 3,623	$ 8,537
Interest Rate Reduction
Financing Receivable, Modified [Line Items]
Amortized cost basis of loan modifications	0	946
Payment Delay and Term Extension
Financing Receivable, Modified [Line Items]
Amortized cost basis of loan modifications	0	6,102
Term Extension and Interest Rate Reduction
Financing Receivable, Modified [Line Items]
Amortized cost basis of loan modifications	0	0
Payment Delay
Financing Receivable, Modified [Line Items]
Amortized cost basis of loan modifications	715	715
Commercial
Financing Receivable, Modified [Line Items]
Amortized cost basis of loan modifications	$ 19	$ 7,157
Percentage of total class of loans and leases	0%	0.13%
Commercial | Term Extension
Financing Receivable, Modified [Line Items]
Amortized cost basis of loan modifications	$ 19	$ 109
Commercial | Interest Rate Reduction
Financing Receivable, Modified [Line Items]
Amortized cost basis of loan modifications	0	946
Commercial | Payment Delay and Term Extension
Financing Receivable, Modified [Line Items]
Amortized cost basis of loan modifications	0	6,102
Commercial | Term Extension and Interest Rate Reduction
Financing Receivable, Modified [Line Items]
Amortized cost basis of loan modifications	0	0
Commercial | Payment Delay
Financing Receivable, Modified [Line Items]
Amortized cost basis of loan modifications	0	0
Commercial | Commercial and Industrial
Financing Receivable, Modified [Line Items]
Amortized cost basis of loan modifications	$ 19	$ 6,211
Percentage of total class of loans and leases	0%	0.40%
Commercial | Commercial and Industrial | Term Extension
Financing Receivable, Modified [Line Items]
Amortized cost basis of loan modifications	$ 19	$ 109
Commercial | Commercial and Industrial | Interest Rate Reduction
Financing Receivable, Modified [Line Items]
Amortized cost basis of loan modifications	0	0
Commercial | Commercial and Industrial | Payment Delay and Term Extension
Financing Receivable, Modified [Line Items]
Amortized cost basis of loan modifications	0	6,102
Commercial | Commercial and Industrial | Term Extension and Interest Rate Reduction
Financing Receivable, Modified [Line Items]
Amortized cost basis of loan modifications	0	0
Commercial | Commercial and Industrial | Payment Delay
Financing Receivable, Modified [Line Items]
Amortized cost basis of loan modifications	0	0
Commercial | Commercial Mortgage
Financing Receivable, Modified [Line Items]
Amortized cost basis of loan modifications		$ 946
Percentage of total class of loans and leases		0.02%
Commercial | Commercial Mortgage | Term Extension
Financing Receivable, Modified [Line Items]
Amortized cost basis of loan modifications		$ 0
Commercial | Commercial Mortgage | Interest Rate Reduction
Financing Receivable, Modified [Line Items]
Amortized cost basis of loan modifications		946
Commercial | Commercial Mortgage | Payment Delay and Term Extension
Financing Receivable, Modified [Line Items]
Amortized cost basis of loan modifications		0
Commercial | Commercial Mortgage | Term Extension and Interest Rate Reduction
Financing Receivable, Modified [Line Items]
Amortized cost basis of loan modifications		0
Commercial | Commercial Mortgage | Payment Delay
Financing Receivable, Modified [Line Items]
Amortized cost basis of loan modifications		0
Consumer
Financing Receivable, Modified [Line Items]
Amortized cost basis of loan modifications	$ 4,319	$ 9,143
Percentage of total class of loans and leases	0.05%	0.11%
Consumer | Term Extension
Financing Receivable, Modified [Line Items]
Amortized cost basis of loan modifications	$ 3,604	$ 8,428
Consumer | Interest Rate Reduction
Financing Receivable, Modified [Line Items]
Amortized cost basis of loan modifications	0	0
Consumer | Payment Delay and Term Extension
Financing Receivable, Modified [Line Items]
Amortized cost basis of loan modifications	0	0
Consumer | Term Extension and Interest Rate Reduction
Financing Receivable, Modified [Line Items]
Amortized cost basis of loan modifications	0	0
Consumer | Payment Delay
Financing Receivable, Modified [Line Items]
Amortized cost basis of loan modifications	715	715
Consumer | Other
Financing Receivable, Modified [Line Items]
Amortized cost basis of loan modifications	$ 373	$ 732
Percentage of total class of loans and leases	0.09%	0.18%
Consumer | Other | Term Extension
Financing Receivable, Modified [Line Items]
Amortized cost basis of loan modifications	$ 373	$ 732
Consumer | Other | Interest Rate Reduction
Financing Receivable, Modified [Line Items]
Amortized cost basis of loan modifications	0	0
Consumer | Other | Payment Delay and Term Extension
Financing Receivable, Modified [Line Items]
Amortized cost basis of loan modifications	0	0
Consumer | Other | Term Extension and Interest Rate Reduction
Financing Receivable, Modified [Line Items]
Amortized cost basis of loan modifications	0	0
Consumer | Other | Payment Delay
Financing Receivable, Modified [Line Items]
Amortized cost basis of loan modifications	0	0
Consumer | Residential Mortgage
Financing Receivable, Modified [Line Items]
Amortized cost basis of loan modifications	$ 715	$ 847
Percentage of total class of loans and leases	0.02%	0.02%
Consumer | Residential Mortgage | Term Extension
Financing Receivable, Modified [Line Items]
Amortized cost basis of loan modifications	$ 0	$ 132
Consumer | Residential Mortgage | Interest Rate Reduction
Financing Receivable, Modified [Line Items]
Amortized cost basis of loan modifications	0	0
Consumer | Residential Mortgage | Payment Delay and Term Extension
Financing Receivable, Modified [Line Items]
Amortized cost basis of loan modifications	0	0
Consumer | Residential Mortgage | Term Extension and Interest Rate Reduction
Financing Receivable, Modified [Line Items]
Amortized cost basis of loan modifications	0	0
Consumer | Residential Mortgage | Payment Delay
Financing Receivable, Modified [Line Items]
Amortized cost basis of loan modifications	715	715
Consumer | Home Equity
Financing Receivable, Modified [Line Items]
Amortized cost basis of loan modifications		$ 136
Percentage of total class of loans and leases		0.01%
Consumer | Home Equity | Term Extension
Financing Receivable, Modified [Line Items]
Amortized cost basis of loan modifications		$ 136
Consumer | Home Equity | Interest Rate Reduction
Financing Receivable, Modified [Line Items]
Amortized cost basis of loan modifications		0
Consumer | Home Equity | Payment Delay and Term Extension
Financing Receivable, Modified [Line Items]
Amortized cost basis of loan modifications		0
Consumer | Home Equity | Term Extension and Interest Rate Reduction
Financing Receivable, Modified [Line Items]
Amortized cost basis of loan modifications		0
Consumer | Home Equity | Payment Delay
Financing Receivable, Modified [Line Items]
Amortized cost basis of loan modifications		0
Consumer | Automobile
Financing Receivable, Modified [Line Items]
Amortized cost basis of loan modifications	$ 3,231	$ 7,428
Percentage of total class of loans and leases	0.38%	0.87%
Consumer | Automobile | Term Extension
Financing Receivable, Modified [Line Items]
Amortized cost basis of loan modifications	$ 3,231	$ 7,428
Consumer | Automobile | Interest Rate Reduction
Financing Receivable, Modified [Line Items]
Amortized cost basis of loan modifications	0	0
Consumer | Automobile | Payment Delay and Term Extension
Financing Receivable, Modified [Line Items]
Amortized cost basis of loan modifications	0	0
Consumer | Automobile | Term Extension and Interest Rate Reduction
Financing Receivable, Modified [Line Items]
Amortized cost basis of loan modifications	0	0
Consumer | Automobile | Payment Delay
Financing Receivable, Modified [Line Items]
Amortized cost basis of loan modifications	$ 0	$ 0

Loans and Leases and the All_11

Loans and Leases and the Allowance for Credit Losses - Schedule of Financial Effect of Loan Modifications to Borrowers Experiencing Financial Difficulty (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2023
Commercial | Commercial and Industrial
Financing Receivable, Modified [Line Items]
Weighted-Average Payment Deferral	$ 0	$ 1,159
Commercial | Commercial and Industrial | Months of Term Extension
Financing Receivable, Modified [Line Items]
Weighted-Average Months of Term Extension	31 months	6 months
Commercial | Commercial and Industrial | Weighted-Average | Interest Rate Reduction
Financing Receivable, Modified [Line Items]
Weighted-Average Interest Rate Reduction	0%	0%
Commercial | Commercial Mortgage
Financing Receivable, Modified [Line Items]
Weighted-Average Payment Deferral	$ 0	$ 0
Commercial | Commercial Mortgage | Months of Term Extension
Financing Receivable, Modified [Line Items]
Weighted-Average Months of Term Extension	0 months	0 months
Commercial | Commercial Mortgage | Weighted-Average | Interest Rate Reduction
Financing Receivable, Modified [Line Items]
Weighted-Average Interest Rate Reduction	2.50%	2.50%
Consumer | Other
Financing Receivable, Modified [Line Items]
Weighted-Average Payment Deferral	$ 0	$ 0
Consumer | Other | Months of Term Extension
Financing Receivable, Modified [Line Items]
Weighted-Average Months of Term Extension	23 months	22 months
Consumer | Other | Weighted-Average | Interest Rate Reduction
Financing Receivable, Modified [Line Items]
Weighted-Average Interest Rate Reduction	0%	0%
Consumer | Residential Mortgage
Financing Receivable, Modified [Line Items]
Weighted-Average Payment Deferral	$ 5	$ 5
Consumer | Residential Mortgage | Months of Term Extension
Financing Receivable, Modified [Line Items]
Weighted-Average Months of Term Extension	0 months	58 months
Consumer | Residential Mortgage | Weighted-Average | Interest Rate Reduction
Financing Receivable, Modified [Line Items]
Weighted-Average Interest Rate Reduction	0%	0%
Consumer | Home Equity
Financing Receivable, Modified [Line Items]
Weighted-Average Payment Deferral	$ 0	$ 0
Consumer | Home Equity | Months of Term Extension
Financing Receivable, Modified [Line Items]
Weighted-Average Months of Term Extension		60 months
Consumer | Home Equity | Weighted-Average | Interest Rate Reduction
Financing Receivable, Modified [Line Items]
Weighted-Average Interest Rate Reduction	0%	0%
Consumer | Automobile
Financing Receivable, Modified [Line Items]
Weighted-Average Payment Deferral	$ 0	$ 0
Consumer | Automobile | Months of Term Extension
Financing Receivable, Modified [Line Items]
Weighted-Average Months of Term Extension	22 months	23 months
Consumer | Automobile | Weighted-Average | Interest Rate Reduction
Financing Receivable, Modified [Line Items]
Weighted-Average Interest Rate Reduction	0%	0%

Loans and Leases and the All_12

Loans and Leases and the Allowance for Credit Losses - Schedule of Financial Effect of Loan Modifications to Borrowers Experiencing Financial Difficulty that Subsequently Defaulted (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2023
Financing Receivable, Modified [Line Items]
Financing Receivable, Modified, Subsequent Default	$ 725	$ 920
Term Extension
Financing Receivable, Modified [Line Items]
Financing Receivable, Modified, Subsequent Default	10	205
Payment Delay
Financing Receivable, Modified [Line Items]
Financing Receivable, Modified, Subsequent Default	715	715
Consumer
Financing Receivable, Modified [Line Items]
Financing Receivable, Modified, Subsequent Default	725	920
Consumer | Term Extension
Financing Receivable, Modified [Line Items]
Financing Receivable, Modified, Subsequent Default	10	205
Consumer | Payment Delay
Financing Receivable, Modified [Line Items]
Financing Receivable, Modified, Subsequent Default	715	715
Consumer | Other
Financing Receivable, Modified [Line Items]
Financing Receivable, Modified, Subsequent Default		65
Consumer | Other | Term Extension
Financing Receivable, Modified [Line Items]
Financing Receivable, Modified, Subsequent Default		65
Consumer | Other | Payment Delay
Financing Receivable, Modified [Line Items]
Financing Receivable, Modified, Subsequent Default		0
Consumer | Residential Mortgage
Financing Receivable, Modified [Line Items]
Financing Receivable, Modified, Subsequent Default	715	715
Consumer | Residential Mortgage | Term Extension
Financing Receivable, Modified [Line Items]
Financing Receivable, Modified, Subsequent Default	0	0
Consumer | Residential Mortgage | Payment Delay
Financing Receivable, Modified [Line Items]
Financing Receivable, Modified, Subsequent Default	715	715
Consumer | Automobile
Financing Receivable, Modified [Line Items]
Financing Receivable, Modified, Subsequent Default	10	140
Consumer | Automobile | Term Extension
Financing Receivable, Modified [Line Items]
Financing Receivable, Modified, Subsequent Default	10	140
Consumer | Automobile | Payment Delay
Financing Receivable, Modified [Line Items]
Financing Receivable, Modified, Subsequent Default	$ 0	$ 0

Loans and Leases and the All_13

Loans and Leases and the Allowance for Credit Losses - Schedule of Aging Analysis of Loan Modifications Made to Borrowers Experiencing Financial Difficulty (Details) $ in Thousands	Sep. 30, 2023 USD ($)
Financing Receivable, Modified [Line Items]
Loan modifications made to borrowers experiencing financial difficulty	$ 16,300
Current
Financing Receivable, Modified [Line Items]
Loan modifications made to borrowers experiencing financial difficulty	14,292
30 - 59 Days Past Due
Financing Receivable, Modified [Line Items]
Loan modifications made to borrowers experiencing financial difficulty	978
60 - 89 Days Past Due
Financing Receivable, Modified [Line Items]
Loan modifications made to borrowers experiencing financial difficulty	133
Past Due 90 Days or More
Financing Receivable, Modified [Line Items]
Loan modifications made to borrowers experiencing financial difficulty	50
Non-Accural
Financing Receivable, Modified [Line Items]
Loan modifications made to borrowers experiencing financial difficulty	847
Commercial
Financing Receivable, Modified [Line Items]
Loan modifications made to borrowers experiencing financial difficulty	7,157
Commercial | Current
Financing Receivable, Modified [Line Items]
Loan modifications made to borrowers experiencing financial difficulty	7,067
Commercial | 30 - 59 Days Past Due
Financing Receivable, Modified [Line Items]
Loan modifications made to borrowers experiencing financial difficulty	90
Commercial | 60 - 89 Days Past Due
Financing Receivable, Modified [Line Items]
Loan modifications made to borrowers experiencing financial difficulty	0
Commercial | Past Due 90 Days or More
Financing Receivable, Modified [Line Items]
Loan modifications made to borrowers experiencing financial difficulty	0
Commercial | Non-Accural
Financing Receivable, Modified [Line Items]
Loan modifications made to borrowers experiencing financial difficulty	0
Commercial | Commercial and Industrial
Financing Receivable, Modified [Line Items]
Loan modifications made to borrowers experiencing financial difficulty	6,211
Commercial | Commercial and Industrial | Current
Financing Receivable, Modified [Line Items]
Loan modifications made to borrowers experiencing financial difficulty	6,121
Commercial | Commercial and Industrial | 30 - 59 Days Past Due
Financing Receivable, Modified [Line Items]
Loan modifications made to borrowers experiencing financial difficulty	90
Commercial | Commercial and Industrial | 60 - 89 Days Past Due
Financing Receivable, Modified [Line Items]
Loan modifications made to borrowers experiencing financial difficulty	0
Commercial | Commercial and Industrial | Past Due 90 Days or More
Financing Receivable, Modified [Line Items]
Loan modifications made to borrowers experiencing financial difficulty	0
Commercial | Commercial and Industrial | Non-Accural
Financing Receivable, Modified [Line Items]
Loan modifications made to borrowers experiencing financial difficulty	0
Commercial | Commercial Mortgage
Financing Receivable, Modified [Line Items]
Loan modifications made to borrowers experiencing financial difficulty	946
Commercial | Commercial Mortgage | Current
Financing Receivable, Modified [Line Items]
Loan modifications made to borrowers experiencing financial difficulty	946
Commercial | Commercial Mortgage | 30 - 59 Days Past Due
Financing Receivable, Modified [Line Items]
Loan modifications made to borrowers experiencing financial difficulty	0
Commercial | Commercial Mortgage | 60 - 89 Days Past Due
Financing Receivable, Modified [Line Items]
Loan modifications made to borrowers experiencing financial difficulty	0
Commercial | Commercial Mortgage | Past Due 90 Days or More
Financing Receivable, Modified [Line Items]
Loan modifications made to borrowers experiencing financial difficulty	0
Commercial | Commercial Mortgage | Non-Accural
Financing Receivable, Modified [Line Items]
Loan modifications made to borrowers experiencing financial difficulty	0
Consumer
Financing Receivable, Modified [Line Items]
Loan modifications made to borrowers experiencing financial difficulty	9,143
Consumer | Current
Financing Receivable, Modified [Line Items]
Loan modifications made to borrowers experiencing financial difficulty	7,225
Consumer | 30 - 59 Days Past Due
Financing Receivable, Modified [Line Items]
Loan modifications made to borrowers experiencing financial difficulty	888
Consumer | 60 - 89 Days Past Due
Financing Receivable, Modified [Line Items]
Loan modifications made to borrowers experiencing financial difficulty	133
Consumer | Past Due 90 Days or More
Financing Receivable, Modified [Line Items]
Loan modifications made to borrowers experiencing financial difficulty	50
Consumer | Non-Accural
Financing Receivable, Modified [Line Items]
Loan modifications made to borrowers experiencing financial difficulty	847
Consumer | Other
Financing Receivable, Modified [Line Items]
Loan modifications made to borrowers experiencing financial difficulty	732
Consumer | Other | Current
Financing Receivable, Modified [Line Items]
Loan modifications made to borrowers experiencing financial difficulty	584
Consumer | Other | 30 - 59 Days Past Due
Financing Receivable, Modified [Line Items]
Loan modifications made to borrowers experiencing financial difficulty	95
Consumer | Other | 60 - 89 Days Past Due
Financing Receivable, Modified [Line Items]
Loan modifications made to borrowers experiencing financial difficulty	31
Consumer | Other | Past Due 90 Days or More
Financing Receivable, Modified [Line Items]
Loan modifications made to borrowers experiencing financial difficulty	22
Consumer | Other | Non-Accural
Financing Receivable, Modified [Line Items]
Loan modifications made to borrowers experiencing financial difficulty	0
Consumer | Residential Mortgage
Financing Receivable, Modified [Line Items]
Loan modifications made to borrowers experiencing financial difficulty	847
Consumer | Residential Mortgage | Current
Financing Receivable, Modified [Line Items]
Loan modifications made to borrowers experiencing financial difficulty	0
Consumer | Residential Mortgage | 30 - 59 Days Past Due
Financing Receivable, Modified [Line Items]
Loan modifications made to borrowers experiencing financial difficulty	0
Consumer | Residential Mortgage | 60 - 89 Days Past Due
Financing Receivable, Modified [Line Items]
Loan modifications made to borrowers experiencing financial difficulty	0
Consumer | Residential Mortgage | Past Due 90 Days or More
Financing Receivable, Modified [Line Items]
Loan modifications made to borrowers experiencing financial difficulty	0
Consumer | Residential Mortgage | Non-Accural
Financing Receivable, Modified [Line Items]
Loan modifications made to borrowers experiencing financial difficulty	847
Consumer | Home Equity
Financing Receivable, Modified [Line Items]
Loan modifications made to borrowers experiencing financial difficulty	136
Consumer | Home Equity | Current
Financing Receivable, Modified [Line Items]
Loan modifications made to borrowers experiencing financial difficulty	136
Consumer | Home Equity | 30 - 59 Days Past Due
Financing Receivable, Modified [Line Items]
Loan modifications made to borrowers experiencing financial difficulty	0
Consumer | Home Equity | 60 - 89 Days Past Due
Financing Receivable, Modified [Line Items]
Loan modifications made to borrowers experiencing financial difficulty	0
Consumer | Home Equity | Past Due 90 Days or More
Financing Receivable, Modified [Line Items]
Loan modifications made to borrowers experiencing financial difficulty	0
Consumer | Home Equity | Non-Accural
Financing Receivable, Modified [Line Items]
Loan modifications made to borrowers experiencing financial difficulty	0
Consumer | Automobile
Financing Receivable, Modified [Line Items]
Loan modifications made to borrowers experiencing financial difficulty	7,428
Consumer | Automobile | Current
Financing Receivable, Modified [Line Items]
Loan modifications made to borrowers experiencing financial difficulty	6,505
Consumer | Automobile | 30 - 59 Days Past Due
Financing Receivable, Modified [Line Items]
Loan modifications made to borrowers experiencing financial difficulty	793
Consumer | Automobile | 60 - 89 Days Past Due
Financing Receivable, Modified [Line Items]
Loan modifications made to borrowers experiencing financial difficulty	102
Consumer | Automobile | Past Due 90 Days or More
Financing Receivable, Modified [Line Items]
Loan modifications made to borrowers experiencing financial difficulty	28
Consumer | Automobile | Non-Accural
Financing Receivable, Modified [Line Items]
Loan modifications made to borrowers experiencing financial difficulty	$ 0

Loans and Leases and the All_14

Loans and Leases and the Allowance for Credit Losses - Schedule of Loan Class and Year of Origination, Gross Charge-offs Recorded (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Financing Receivable, Modified [Line Items]
Gross charge-offs, 2023	$ 751		$ 1,294
Gross charge-offs, 2022	868		3,261
Gross charge-offs, 2021	669		2,424
Gross charge-offs, 2020	343		881
Gross charge-offs, 2019	497		1,575
Gross charge-offs, Prior	489		2,002
Total Loans and Leases	3,617	$ 2,865	11,437	$ 10,119
Commercial
Financing Receivable, Modified [Line Items]
Gross charge-offs, 2023	162		347
Gross charge-offs, 2022	0		188
Gross charge-offs, 2021	0		0
Gross charge-offs, 2020	84		84
Gross charge-offs, 2019	0		0
Gross charge-offs, Prior	48		139
Total Loans and Leases	294	147	758	729
Commercial | Commercial and Industrial
Financing Receivable, Modified [Line Items]
Gross charge-offs, 2023	162		347
Gross charge-offs, 2022			188
Gross charge-offs, 2021	0		0
Gross charge-offs, 2020	84		84
Gross charge-offs, 2019	0		0
Gross charge-offs, Prior	48		139
Total Loans and Leases	294		758
Consumer
Financing Receivable, Modified [Line Items]
Gross charge-offs, 2023	589		947
Gross charge-offs, 2022	868		3,073
Gross charge-offs, 2021	669		2,424
Gross charge-offs, 2020	259		797
Gross charge-offs, 2019	497		1,575
Gross charge-offs, Prior	441		1,863
Total Loans and Leases	3,323	$ 2,718	10,679	$ 9,390
Consumer | Other
Financing Receivable, Modified [Line Items]
Gross charge-offs, 2023	455		813
Gross charge-offs, 2022	510		1,844
Gross charge-offs, 2021	360		1,371
Gross charge-offs, 2020	114		316
Gross charge-offs, 2019	238		952
Gross charge-offs, Prior	280		1,000
Total Loans and Leases	1,957		6,296
Consumer | Residential Mortgage
Financing Receivable, Modified [Line Items]
Gross charge-offs, 2023	0		0
Gross charge-offs, 2022	0		0
Gross charge-offs, 2021	0		0
Gross charge-offs, 2020	0		0
Gross charge-offs, 2019	0		0
Gross charge-offs, Prior	0		6
Total Loans and Leases	0		6
Consumer | Home Equity
Financing Receivable, Modified [Line Items]
Gross charge-offs, 2023	0		0
Gross charge-offs, 2022	0		0
Gross charge-offs, 2021	0		0
Gross charge-offs, 2020	0		0
Gross charge-offs, 2019	13		13
Gross charge-offs, Prior	0		55
Total Loans and Leases	13		68
Consumer | Automobile
Financing Receivable, Modified [Line Items]
Gross charge-offs, 2023	134		134
Gross charge-offs, 2022	358		1,229
Gross charge-offs, 2021	309		1,053
Gross charge-offs, 2020	145		481
Gross charge-offs, 2019	246		610
Gross charge-offs, Prior	161		802
Total Loans and Leases	$ 1,353		$ 4,309

Mortgage Servicing Rights - Add

Mortgage Servicing Rights - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Transfers and Servicing of Financial Assets [Abstract]
Residential mortgage loans serviced for third parties	$ 2,600		$ 2,600		$ 2,600
Servicing income, including late and ancillary fees	$ 1.4	$ 1.5	$ 4.2	$ 4.5

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, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Servicing Assets At Fair Value [Line Items]
Balance at Beginning of Period	$ 695	$ 747	$ 717	$ 800
Change in Fair Value Due to Payoffs	(10)	(15)	(32)	(68)
Balance at End of Period	$ 685	$ 732	$ 685	$ 732

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, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Mortgage Servicing Rights Accounted for Under the Amortization Method (Rollforward)
Balance at Beginning of Period	$ 20,931	$ 22,793	$ 21,902	$ 21,451
Servicing Rights that Resulted From Asset Transfers	206	160	382	1,115
Amortization	(549)	(581)	(1,696)	(2,023)
Valuation Allowance Recovery (Provision)				1,829
Balance at End of Period	20,588	22,372	20,588	22,372
Valuation Allowance:
Balance at Beginning of Period				(1,829)
Valuation Allowance Recovery (Provision)				1,829
Fair Value of Mortgage Servicing Rights Accounted for Under the Amortization Method
Beginning of Period	26,327	28,314	27,323	21,451
End of Period	$ 26,423	$ 27,678	$ 26,423	$ 27,678

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, 2023	Dec. 31, 2022
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)	3.81%	4.02%
Weighted-Average Life (in years)	9 years 7 months 24 days	9 years 7 months 20 days
Weighted-Average Note Rate (as a percent)	3.65%	3.60%
Weighted-Average Discount Rate (as a percent)	10.13%	9.93%

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, 2023	Dec. 31, 2022
Constant Prepayment Rate
Decrease in fair value from 25 basis points (“bps”) adverse change	$ (280)	$ (346)
Decrease in fair value from 50 bps adverse change	(602)	(686)
Discount Rate
Decrease in fair value from 25 bps adverse change	(302)	(316)
Decrease in fair value from 50 bps adverse change	$ (597)	$ (626)

Affordable Housing Projects T_3

Affordable Housing Projects Tax Credit Partnerships - Additional Information (Details) - USD ($)	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Equity Method Investments and Joint Ventures [Abstract]
Net affordable housing tax credit investments including the related unfunded commitments	$ 188,400,000		$ 174,500,000
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, 2023 USD ($)
Affordable Housing Tax Credit Investments, Unfunded Commitment [Abstract]
2023	$ 15,708
2024	24,749
2025	32,334
2026	258
2027	154
Thereafter	12,829
Total Unfunded Commitments	$ 86,032

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, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Effective Yield Method
Tax Credits and Other Tax Benefits Recognized	$ 1,457	$ 1,520	$ 4,372	$ 4,586
Amortization Expense in Provision for Income Taxes	1,333	1,296	3,998	3,889
Proportional Amortization Method
Tax Credits and Other Tax Benefits Recognized	3,696	3,802	14,572	11,381
Amortization Expense in Provision for Income Taxes	$ 3,203	$ 3,331	$ 12,630	$ 9,860

Securities Sold Under Agreeme_3

Securities Sold Under Agreements to Repurchase - Remaining Contractual Maturities of Repurchase Agreements by Class of Collateral Pledged (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Assets Sold Under Agreements To Repurchase [Line Items]
Securities Sold under Agreements to Repurchase	$ 150,490	$ 725,490
Debt Securities Issued by States and Political Subdivisions
Assets Sold Under Agreements To Repurchase [Line Items]
Securities Sold under Agreements to Repurchase	490	490
Residential - Government Agencies
Assets Sold Under Agreements To Repurchase [Line Items]
Securities Sold under Agreements to Repurchase	1,792	28,673
Residential - U.S. Government-Sponsored Enterprises
Assets Sold Under Agreements To Repurchase [Line Items]
Securities Sold under Agreements to Repurchase	148,208	696,327
Maturity Up To 90 Days
Assets Sold Under Agreements To Repurchase [Line Items]
Securities Sold under Agreements to Repurchase	0	0
Maturity Up To 90 Days | Debt Securities Issued by States and Political Subdivisions
Assets Sold Under Agreements To Repurchase [Line Items]
Securities Sold under Agreements to Repurchase	0	0
Maturity Up To 90 Days | Residential - Government Agencies
Assets Sold Under Agreements To Repurchase [Line Items]
Securities Sold under Agreements to Repurchase	0	0
Maturity Up To 90 Days | Residential - U.S. Government-Sponsored Enterprises
Assets Sold Under Agreements To Repurchase [Line Items]
Securities Sold under Agreements to Repurchase	0	0
Maturity 91 To 365 Days
Assets Sold Under Agreements To Repurchase [Line Items]
Securities Sold under Agreements to Repurchase	0	0
Maturity 91 To 365 Days | Debt Securities Issued by States and Political Subdivisions
Assets Sold Under Agreements To Repurchase [Line Items]
Securities Sold under Agreements to Repurchase	0	0
Maturity 91 To 365 Days | Residential - Government Agencies
Assets Sold Under Agreements To Repurchase [Line Items]
Securities Sold under Agreements to Repurchase	0	0
Maturity 91 To 365 Days | Residential - U.S. Government-Sponsored Enterprises
Assets Sold Under Agreements To Repurchase [Line Items]
Securities Sold under Agreements to Repurchase	0	0
Maturity 1 To 3 Years
Assets Sold Under Agreements To Repurchase [Line Items]
Securities Sold under Agreements to Repurchase	490	425,000
Maturity 1 To 3 Years | Debt Securities Issued by States and Political Subdivisions
Assets Sold Under Agreements To Repurchase [Line Items]
Securities Sold under Agreements to Repurchase	490	0
Maturity 1 To 3 Years | Residential - Government Agencies
Assets Sold Under Agreements To Repurchase [Line Items]
Securities Sold under Agreements to Repurchase	0	28,673
Maturity 1 To 3 Years | Residential - U.S. Government-Sponsored Enterprises
Assets Sold Under Agreements To Repurchase [Line Items]
Securities Sold under Agreements to Repurchase	0	396,327
Maturity After 3 Years
Assets Sold Under Agreements To Repurchase [Line Items]
Securities Sold under Agreements to Repurchase	150,000	300,490
Maturity After 3 Years | Debt Securities Issued by States and Political Subdivisions
Assets Sold Under Agreements To Repurchase [Line Items]
Securities Sold under Agreements to Repurchase	0	490
Maturity After 3 Years | Residential - Government Agencies
Assets Sold Under Agreements To Repurchase [Line Items]
Securities Sold under Agreements to Repurchase	1,792	0
Maturity After 3 Years | Residential - U.S. Government-Sponsored Enterprises
Assets Sold Under Agreements To Repurchase [Line Items]
Securities Sold under Agreements to Repurchase	$ 148,208	$ 300,000

Securities Sold Under Agreeme_4

Securities Sold Under Agreements to Repurchase - Additional Information (Details) $ in Thousands	1 Months Ended	3 Months Ended
	Sep. 30, 2023 USD ($)	Sep. 30, 2023 USD ($) Agreement	Dec. 31, 2022 USD ($)
Assets Sold under Agreements to Repurchase [Line Items]
Securities Sold Under Agreements to Repurchase	$ 150,490	$ 150,490	$ 725,490
Private Institutions
Assets Sold under Agreements to Repurchase [Line Items]
Aggregate outstanding balance of terminated repurchase agreements	425,000
Gain on debt extinguishment	14,700
Number of excercised call right on repurchase agreement | Agreement		2
Securities Sold Under Agreements to Repurchase	$ 150,000	$ 150,000	$ 725,000

Securities Sold Under Agreeme_5

Securities Sold Under Agreements to Repurchase - Schedule of Assets and Liabilities Subject to an Enforceable Master Netting Arrangement or Repurchase Agreements (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Assets:
Gross Amounts of Recognized Assets	$ 210,734	$ 47,717
Liabilities:
Gross Amounts of Recognized Liabilities	202,397	168,037
Repurchase Agreements, Gross Amounts of Recognized Liabilities	150,490	725,490
Repurchase Agreements, Gross Amounts Offset in the Statements of Condition	0	0
Repurchase Agreements, Net Amounts of Liabilities Presented in the Statements of Condition	150,490	725,490
Securities Sold under Agreements to Repurchase, Net Amount Offset Against Collateral	0	0
Repurchase Agreements, Fair Value of Collateral Pledged	150,490	725,490
Private Institutions
Liabilities:
Repurchase Agreements, Gross Amounts of Recognized Liabilities	150,000	725,000
Repurchase Agreements, Gross Amounts Offset in the Statements of Condition	0	0
Repurchase Agreements, Net Amounts of Liabilities Presented in the Statements of Condition	150,000	725,000
Securities Sold under Agreements to Repurchase, Net Amount Offset Against Collateral	0	0
Repurchase Agreements, Fair Value of Collateral Pledged	150,000	725,000
Government Entities
Liabilities:
Repurchase Agreements, Gross Amounts of Recognized Liabilities	490	490
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	490
Securities Sold under Agreements to Repurchase, Net Amount Offset Against Collateral	0	0
Repurchase Agreements, Fair Value of Collateral Pledged	490	490
Interest Rate Swap Agreements | Institutional Counterparties
Assets:
Gross Amounts of Recognized Assets	201,610	42,339
Gross Amounts Offset in the Statements of Condition	0	0
Net Amounts of Assets Presented in the Statements of Condition	201,610	42,339
Netting Adjustments per Master Netting Arrangements	201,610	42,339
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	755	3,554
Gross Amounts Offset in the Statements of Condition	0	0
Net Amounts of Liabilities Presented in the Statements of Condition	755	3,554
Derivative Liability, Netting Adjustments per Master Netting Arrangements	755	3,554
Derivative, Collateral, Right to Reclaim Securities	0	0
Derivative Liabilities, Net Amount	$ 0	$ 0

Securities Sold Under Agreeme_6

Securities Sold Under Agreements to Repurchase - Schedule of Assets and Liabilities Subject to an Enforceable Master Netting Arrangement or Repurchase Agreements (Parenthetical) (Details) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Interest Rate Swap Agreements
Offsetting Assets And Liabilities [Line Items]
Fair value of investment securities pledged	$ 24.8	$ 34.8
Private Institutions
Offsetting Assets And Liabilities [Line Items]
Fair value of investment securities pledged	153.8	755.9
Government Entities
Offsetting Assets And Liabilities [Line Items]
Fair value of investment securities pledged	$ 0.7	$ 0.8

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, 2023	Jun. 30, 2023	Mar. 31, 2023	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Sep. 30, 2023	Sep. 30, 2022
Other Comprehensive Income (Loss), Before Tax:
Net Unrealized Gains (Losses) Arising During the Period	$ (38,035)			$ (111,338)			$ (36,702)	$ (523,365)
(Gain) Loss on Sale	4,582						4,582
Amortization of Unrealized Holding (Gains) Losses on HTM Securities	6,787			3,037			20,500	3,100
Net Unrealized Gains (Losses) on Investment Securities	(26,666)			(108,301)			(11,620)	(520,265)
Amortization of Net Actuarial Losses (Gains)	177			542			528	1,626
Amortization of Prior Service Credit	(62)			(61)			(184)	(184)
Defined Benefit Plans, Net	115			481			344	1,442
Other Comprehensive Income (Loss)	(26,551)			(107,820)			(11,276)	(518,823)
Other Comprehensive Income (Loss), Tax Effect:
Net Unrealized Gains (Losses) Arising During the Period	(11,439)			(29,506)			(11,086)	(138,715)
(Gain) Loss on Sale	1,237						1,237
Amortization of Unrealized Holding (Gains) Losses on HTM Securities	1,800			805			5,434	821
Net Unrealized Gains (Losses) on Investment Securities	(8,402)			(28,701)			(4,415)	(137,894)
Amortization of Net Actuarial Losses (Gains)	46			143			140	431
Amortization of Prior Service Credit	(15)			(16)			(48)	(48)
Defined Benefit Plans, Net	31			127			92	383
Other Comprehensive Income (Loss)	(8,371)			(28,574)			(4,323)	(137,511)
Other Comprehensive Income (Loss), Net of Tax:
Net Unrealized Gains (Losses) Arising During the Period	(26,596)			(81,832)			(25,616)	(384,650)
(Gain) Loss on Sale	3,345						3,345
Amortization of Unrealized Holding (Gains) Losses on HTM Securities	4,987			2,232			15,066	2,279
Net Unrealized Gains (Losses) on Investment Securities	(18,264)			(79,600)			(7,205)	(382,371)
Amortization of Net Actuarial Losses (Gains)	131			399			388	1,195
Amortization of Prior Service Credit	(47)			(45)			(136)	(136)
Defined Benefit Plans, Net	84			354			252	1,059
Total Other Comprehensive Income (Loss)	$ (18,180)	$ (18,133)	$ 29,360	$ (79,246)	$ (122,295)	$ (179,771)	$ (6,953)	$ (381,312)

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, 2023	Jun. 30, 2023	Mar. 31, 2023	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Sep. 30, 2023	Sep. 30, 2022
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance at Beginning of Period	$ 1,358,279	$ 1,354,430	$ 1,316,995	$ 1,348,746	$ 1,448,885	$ 1,611,611	$ 1,316,995	$ 1,611,611
Total Other Comprehensive Income (Loss)	(18,180)	(18,133)	29,360	(79,246)	(122,295)	(179,771)	(6,953)	(381,312)
Balance at End of Period	1,363,840	1,358,279	1,354,430	1,282,384	1,348,746	1,448,885	1,363,840	1,282,384
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	(239,803)		(240,783)	(335,758)		(32,940)	(240,783)	(32,940)
Other Comprehensive Income (Loss) Before Reclassifications	(26,596)			(81,832)			(25,616)	(384,650)
Unrealized Net Losses Related to the Transfer of Securities from Available-for-Sale to Held-to-Maturity				176,700				176,700
Amounts Reclassified from Accumulated Other Comprehensive Income (Loss)	3,345			0			3,345	0
Total Other Comprehensive Income (Loss)	(23,251)			94,868			(22,271)	(207,950)
Balance at End of Period	(263,054)	(239,803)		(240,890)	(335,758)		(263,054)	(240,890)
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	(158,718)		(168,797)	101		54	(168,797)	54
Other Comprehensive Income (Loss) Before Reclassifications	0			0			0	0
Unrealized Net Losses Related to the Transfer of Securities from Available-for-Sale to Held-to-Maturity				(176,700)				(176,700)
Amounts Reclassified from Accumulated Other Comprehensive Income (Loss)	4,987			2,232			15,066	2,279
Total Other Comprehensive Income (Loss)	4,987			(174,468)			15,066	(174,421)
Balance at End of Period	(153,731)	(158,718)		(174,367)	101		(153,731)	(174,367)
Defined Benefit Plans
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance at Beginning of Period	(24,910)		(25,078)	(32,791)		(33,496)	(25,078)	(33,496)
Other Comprehensive Income (Loss) Before Reclassifications	0			0			0	0
Unrealized Net Losses Related to the Transfer of Securities from Available-for-Sale to Held-to-Maturity				0				0
Amounts Reclassified from Accumulated Other Comprehensive Income (Loss)	84			354			252	1,059
Total Other Comprehensive Income (Loss)	84			354			252	1,059
Balance at End of Period	(24,826)	(24,910)		(32,437)	(32,791)		(24,826)	(32,437)
Accum.Other Comprehensive Income (Loss)
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance at Beginning of Period	(423,431)	(405,298)	(434,658)	(368,448)	(246,153)	(66,382)	(434,658)	(66,382)
Other Comprehensive Income (Loss) Before Reclassifications	(26,596)			(81,832)			(25,616)	(384,650)
Unrealized Net Losses Related to the Transfer of Securities from Available-for-Sale to Held-to-Maturity				0				0
Amounts Reclassified from Accumulated Other Comprehensive Income (Loss)	8,416			2,586			18,663	3,338
Total Other Comprehensive Income (Loss)	(18,180)	(18,133)	29,360	(79,246)	(122,295)	(179,771)	(6,953)	(381,312)
Balance at End of Period	$ (441,611)	$ (423,431)	$ (405,298)	$ (447,694)	$ (368,448)	$ (246,153)	$ (441,611)	$ (447,694)

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, 2023	Jun. 30, 2023	Mar. 31, 2023	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Sep. 30, 2023	Sep. 30, 2022
Reclassification Out of Accumulated Other Comprehensive Income [Line Items]
Salaries and Benefits	$ (58,825)			$ (59,938)			$ (180,088)	$ (177,631)
Provision for Income Tax	(15,767)			(13,765)			(46,704)	(47,130)
Net Income (Loss)	47,903	$ 46,061	$ 46,842	52,801	$ 56,862	$ 54,834	140,806	164,497
Reclassification out of Accumulated Other Comprehensive Income
Reclassification Out of Accumulated Other Comprehensive Income [Line Items]
Net Income (Loss)	(8,416)			(2,586)			(18,663)	(3,338)
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	(6,787)			(3,037)			(20,500)	(3,100)
Provision for Income Tax	1,800			805			5,434	821
Net Income (Loss)	(4,987)			(2,232)			(15,066)	(2,279)
Reclassification out of Accumulated Other Comprehensive Income | Sale of Investment Securities Available for Sale Member
Reclassification Out of Accumulated Other Comprehensive Income [Line Items]
Sale of Investment Securities Available-for-Sale	(4,582)			0			(4,582)	0
Provision for Income Tax	1,237			0			1,237	0
Net Income (Loss)	(3,345)			0			(3,345)	0
Reclassification out of Accumulated Other Comprehensive Income | Accumulated Defined Benefit Plans Adjustment, Net Prior Service Attributable to Parent
Reclassification Out of Accumulated Other Comprehensive Income [Line Items]
Salaries and Benefits	62			61			184	184
Reclassification out of Accumulated Other Comprehensive Income | Accumulated Defined Benefit Plans Adjustment, Net Gain (Loss) Attributable to Parent
Reclassification Out of Accumulated Other Comprehensive Income [Line Items]
Salaries and Benefits	(177)			(542)			(528)	(1,626)
Reclassification out of Accumulated Other Comprehensive Income | Accumulated Defined Benefit Plans Adjustment Attributable to Parent
Reclassification Out of Accumulated Other Comprehensive Income [Line Items]
Salaries and Benefits	(115)			(481)			(344)	(1,442)
Provision for Income Tax	31			127			92	383
Net Income (Loss)	$ (84)			$ (354)			$ (252)	$ (1,059)

Earnings Per Common Share - Sch

Earnings Per Common Share - 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 (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Numerator:
Net Income Available to Common Shareholders	$ 45,934	$ 50,832	$ 134,898	$ 158,589
Denominator:
Weighted Average Common Shares Outstanding - Basic	39,274,626	39,567,047	39,264,450	39,670,409
Dilutive Effect of Equity Based Awards (in shares)	145,905	191,162	127,983	178,386
Weighted Average Common Shares Outstanding - Diluted	39,420,531	39,758,209	39,392,433	39,848,795
Earnings Per Common Share:
Basic	$ 1.17	$ 1.28	$ 3.44	$ 4
Diluted	$ 1.17	$ 1.28	$ 3.42	$ 3.98
Antidilutive Stock Options and Restricted Stock Outstanding (in shares)	202,864	0	222,851	0

Business Segments - Additional

Business Segments - Additional Information (Details)	9 Months Ended
	Sep. 30, 2023 Branch Atms
Business segment financial information
Federal and state effective tax rate used for segment reporting	26%
Consumer Banking
Business segment financial information
Number of branch locations through which products and services are delivered to customers | Branch	51
Number of ATM's through which products and services are delivered to customers | Atms	320

Business Segments - Selected Bu

Business Segments - Selected Business Segment Financial Information (Details) - USD ($) $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Business segment financial information
Net Interest Income (Loss)	$ 120,937			$ 141,655			$ 381,240	$ 399,820
Provision for Credit Losses	2,000			0			6,500	(8,000)
Net Interest Income (Loss) After Provision for Credit Losses	118,937			141,655			374,740	407,820
Noninterest Income	50,334			30,660			134,326	116,369
Noninterest Expense	(105,601)			(105,749)			(321,556)	(312,562)
Income (Loss) Before Provision for Income Taxes	63,670			66,566			187,510	211,627
Provision for Income Taxes	(15,767)			(13,765)			(46,704)	(47,130)
Net Income (Loss)	47,903	$ 46,061	$ 46,842	52,801	$ 56,862	$ 54,834	140,806	164,497
Total Assets	23,549,785			23,134,040			23,549,785	23,134,040	$ 23,606,877
Consumer Banking
Business segment financial information
Net Interest Income (Loss)	100,913			85,658			298,512	232,646
Provision for Credit Losses	1,974			1,148			6,035	3,463
Net Interest Income (Loss) After Provision for Credit Losses	98,939			84,510			292,477	229,183
Noninterest Income	31,027			30,974			94,126	94,811
Noninterest Expense	(81,377)			(83,408)			(247,543)	(247,854)
Income (Loss) Before Provision for Income Taxes	48,589			32,076			139,060	76,140
Provision for Income Taxes	(12,582)			(8,067)			(35,838)	(19,114)
Net Income (Loss)	36,007			24,009			103,222	57,026
Total Assets	8,584,221			8,399,068			8,584,221	8,399,068
Commercial Banking
Business segment financial information
Net Interest Income (Loss)	53,823			56,251			164,202	152,394
Provision for Credit Losses	74			(1)			59	(200)
Net Interest Income (Loss) After Provision for Credit Losses	53,749			56,252			164,143	152,594
Noninterest Income	8,483			(911)			25,072	17,650
Noninterest Expense	(18,937)			(17,330)			(58,528)	(53,014)
Income (Loss) Before Provision for Income Taxes	43,295			38,011			130,687	117,230
Provision for Income Taxes	(10,987)			(9,206)			(32,490)	(28,654)
Net Income (Loss)	32,308			28,805			98,197	88,576
Total Assets	5,719,577			5,486,330			5,719,577	5,486,330
Treasury and Other
Business segment financial information
Net Interest Income (Loss)	(33,799)			(254)			(81,474)	14,780
Provision for Credit Losses	(48)			(1,147)			406	(11,263)
Net Interest Income (Loss) After Provision for Credit Losses	(33,751)			893			(81,880)	26,043
Noninterest Income	10,824			597			15,128	3,908
Noninterest Expense	(5,287)			(5,011)			(15,485)	(11,694)
Income (Loss) Before Provision for Income Taxes	(28,214)			(3,521)			(82,237)	18,257
Provision for Income Taxes	7,802			3,508			21,624	638
Net Income (Loss)	(20,412)			(13)			(60,613)	18,895
Total Assets	$ 9,245,987			$ 9,248,642			$ 9,245,987	$ 9,248,642

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, 2023	Dec. 31, 2022
Derivatives designated as hedging instruments | Interest Rate Swap Agreements
Derivative [Line Items]
Notional Amount	$ 2,000,000	$ 0
Fair Value	8,216	0
Derivatives not designated as hedging instruments | Interest Rate Lock Commitments
Derivative [Line Items]
Notional Amount	11,764	3,860
Fair Value	113	58
Derivatives not designated as hedging instruments | Forward Commitments
Derivative [Line Items]
Notional Amount	11,376	3,256
Fair Value	68	6
Derivatives not designated as hedging instruments | Receive Fixed / Pay Variable Swap
Derivative [Line Items]
Notional Amount	2,005,276	1,821,433
Fair Value	(200,915)	(160,914)
Derivatives not designated as hedging instruments | Pay Fixed / Receive Variable Swap
Derivative [Line Items]
Notional Amount	2,005,276	1,821,433
Fair Value	200,855	38,785
Derivatives not designated as hedging instruments | Foreign Exchange Contracts
Derivative [Line Items]
Notional Amount	620	52,065
Fair Value	0	1,745
Derivatives not designated as hedging instruments | Visa Conversion Rate Swap Agreement
Derivative [Line Items]
Notional Amount	137,110	$ 124,752
Fair Value	$ 0

Derivative Financial Instrume_4

Derivative Financial Instruments - Derivative Financial Instruments, their Fair Values, and Balance Sheet Location (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Derivatives Fair Value [Line Items]
Asset Derivatives	$ 210,734	$ 47,717
Liability Derivatives	202,397	168,037
Derivatives designated as hedging instruments | Interest Rate Swap Agreements
Derivatives Fair Value [Line Items]
Asset Derivatives	8,216	0
Liability Derivatives	0	0
Derivatives not designated as hedging instruments | Interest Rate Lock Commitments
Derivatives Fair Value [Line Items]
Asset Derivatives	142	64
Liability Derivatives	29	6
Derivatives not designated as hedging instruments | Forward Commitments
Derivatives Fair Value [Line Items]
Asset Derivatives	71	10
Liability Derivatives	3	4
Derivatives not designated as hedging instruments | Interest Rate Swap Agreements
Derivatives Fair Value [Line Items]
Asset Derivatives	202,305	45,831
Liability Derivatives	202,365	167,960
Derivatives not designated as hedging instruments | Foreign Exchange Contracts
Derivatives Fair Value [Line Items]
Asset Derivatives	0	1,812
Liability Derivatives	$ 0	$ 67

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, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Derivative Instruments Gain Loss [Line Items]
Net gains (losses) recognized in the statements of income	$ 175	$ 755	$ 1,774	$ 2,486
Derivatives designated as hedging instruments | Interest Income on Investment Securities Available-for-Sale
Derivative Instruments Gain Loss [Line Items]
Net gains (losses) recognized in the statements of income	(5,035)		(5,035)
Derivatives designated as hedging instruments | Interest and Fees on Loans and Leases
Derivative Instruments Gain Loss [Line Items]
Net gains (losses) recognized in the statements of income	(2,885)		(3,321)
Derivatives designated as hedging instruments | Interest Rate Swap Agreements | Interest Income on Investment Securities Available-for-Sale
Derivative Instruments Gain Loss [Line Items]
Net gains (losses) recognized in the statements of income	4,954		4,954
Derivatives designated as hedging instruments | Interest Rate Swap Agreements | Interest and Fees on Loans and Leases
Derivative Instruments Gain Loss [Line Items]
Net gains (losses) recognized in the statements of income	2,828		3,262
Derivatives not designated as hedging instruments | Interest Rate Lock Commitments
Derivative Instruments Gain Loss [Line Items]
Net gains (losses) recognized in the statements of income	$ 75	$ 1	$ 553	$ (1,012)
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Mortgage Banking Income	Mortgage Banking Income	Mortgage Banking Income	Mortgage Banking Income
Derivatives not designated as hedging instruments | Forward Commitments
Derivative Instruments Gain Loss [Line Items]
Net gains (losses) recognized in the statements of income	$ 199	$ 289	$ 260	$ 2,510
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Mortgage Banking Income	Mortgage Banking Income	Mortgage Banking Income	Mortgage Banking Income
Derivatives not designated as hedging instruments | Interest Rate Swap Agreements
Derivative Instruments Gain Loss [Line Items]
Net gains (losses) recognized in the statements of income	$ 21	$ 35	$ 3	$ 52
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Noninterest Income, Other Operating Income	Noninterest Income, Other Operating Income	Noninterest Income, Other Operating Income	Noninterest Income, Other Operating Income
Derivatives not designated as hedging instruments | Foreign Exchange Contracts
Derivative Instruments Gain Loss [Line Items]
Net gains (losses) recognized in the statements of income	$ 816	$ 430	$ 2,460	$ 936
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Noninterest Income, Other Operating Income	Noninterest Income, Other Operating Income	Noninterest Income, Other Operating Income	Noninterest Income, Other Operating Income
Derivatives not designated as hedging instruments | Visa Conversion Rate Swap Agreement
Derivative Instruments Gain Loss [Line Items]
Net gains (losses) recognized in the statements of income	$ (798)		$ (1,362)
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Gain (Loss) on Sale of Investments	Gain (Loss) on Sale of Investments	Gain (Loss) on Sale of Investments	Gain (Loss) on Sale of Investments

Derivative Financial Instrume_6

Derivative Financial Instruments - Schedule of Derivative Instruments in Statement of Financial Position Related to Cumulative Basis Adjustment for Fair Value Hedges (Details) - Designated as Hedging Instruments $ in Thousands	Sep. 30, 2023 USD ($)
Investment Securities, Available-for-Sale
Fair value hedges [line items]
Carrying Amount of the Hedged Assets	$ (994,965)	[1]
Cummulative Amount of Fair Value Hedging Adjustment Included In the Carrying Amount of the Hedged Assets	(5,035)	[1]
Loans and Leases
Fair value hedges [line items]
Carrying Amount of the Hedged Assets	(996,679)	[2]
Cummulative Amount of Fair Value Hedging Adjustment Included In the Carrying Amount of the Hedged Assets	$ (3,321)	[2]
[1] These amounts were included in the fair value of closed portfolios of investment securities, available-for-sale used to designate hedging relationships in which the hedged item is the stated amount of assets in the closed portfolios anticipated to be outstanding for the designated hedge period. As of September 30, 2023 , the fair value of the closed portfolios used in these hedging relationships was $ 1.9 billion. These amounts were included in the amortized cost basis of closed portfolios of loans used to designate hedging relationships in which the hedged item is the stated amount of assets in the closed portfolios anticipated to be outstanding for the designated hedge period. As of September 30, 2023 , the amortized cost basis of the closed portfolios used in these hedging relationships was $ 3.2 billion.

Derivative Financial Instrume_7

Derivative Financial Instruments - Schedule of Derivative Instruments in Statement of Financial Position Related to Cumulative Basis Adjustment for Fair Value Hedges (Parenthetical) (Details) $ in Billions	Sep. 30, 2023 USD ($)
Derivative Instruments, Fair Value Hedges [Line items]
Fair value of closed portfolio	$ 1.9
Amortized Cost of closed portfolio	$ 3.2

Derivative Financial Instrume_8

Derivative Financial Instruments - Additional Information (Details) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Interest Rate Swap
Derivative [Line Items]
Net asset positions, aggregate fair value	$ 200.9	$ 38.8

Commitments and Contingencies -

Commitments and Contingencies - Credit Commitments (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Credit Commitments [Line Items]
Credit Commitments	$ 3,654,756	$ 3,746,414
Unfunded Commitments to Extend Credit
Credit Commitments [Line Items]
Credit Commitments	3,547,254	3,592,872
Standby Letters of Credit
Credit Commitments [Line Items]
Credit Commitments	86,534	129,512
Commercial Letters of Credit
Credit Commitments [Line Items]
Credit Commitments	$ 20,968	$ 24,030

Commitments and Contingencies_2

Commitments and Contingencies - Additional Information (Details) $ in Millions	9 Months Ended
	Sep. 30, 2023 USD ($)
Standby Letters of Credit
Representations and warranties [Line Items]
Assets secured for standby letters of credit	$ 60.6
Standby and Commercial Letters Of Credit | Minimum
Representations and warranties [Line Items]
Standby and commercial letters of credit remaining term	1 month
Standby and Commercial Letters Of Credit | Maximum
Representations and warranties [Line Items]
Standby and commercial letters of credit remaining term	12 months

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, 2023	Dec. 31, 2022
Assets:
Available-for-Sale: Fair Value	$ 2,387,324	$ 2,844,823
Loans Held for Sale	1,450	1,035
Debt Securities Issued by States and Political Subdivisions
Assets:
Available-for-Sale: Fair Value	60,602	95,265
Debt Securities Issued by Government-Sponsored Enterprises
Assets:
Available-for-Sale: Fair Value	1,640	48,628
Debt Securities Issued by Corporations
Assets:
Available-for-Sale: Fair Value	649,140	794,658
Residential - Government Agencies
Assets:
Available-for-Sale: Fair Value	631,947	732,828
Residential - U.S. Government-Sponsored Enterprises
Assets:
Available-for-Sale: Fair Value	699,349	793,871
Mortgage-Backed Securities
Assets:
Available-for-Sale: Fair Value	1,462,486	1,672,366
Commercial - Government Agencies or Sponsored Agencies
Assets:
Available-for-Sale: Fair Value	131,190	145,667
Fair Value, Measurements, Recurring
Assets:
Available-for-Sale: Fair Value	2,387,324	2,844,823
Loans Held for Sale	1,450	1,035
Mortgage Servicing Rights	685	717
Other Assets	51,435	47,755
Derivatives	210,734	47,717
Total Assets Measured at Fair Value on a Recurring Basis	2,651,628	2,942,047
Liabilities:
Derivatives	$ 202,397	$ 168,037
Derivative Liability Statement Of Financial Position [ExtensibleEnumeration]	Other Liabilities	Other Liabilities
Total Liabilities Measured at Fair Value on a Recurring Basis	$ 202,397	$ 168,037
Fair Value, Measurements, Recurring | Debt Securities Issued by the U.S. Treasury and Government Agencies
Assets:
Available-for-Sale: Fair Value	213,456	233,906
Fair Value, Measurements, Recurring | Debt Securities Issued by States and Political Subdivisions
Assets:
Available-for-Sale: Fair Value	60,602	95,265
Fair Value, Measurements, Recurring | Debt Securities Issued by Government-Sponsored Enterprises
Assets:
Available-for-Sale: Fair Value	1,640	48,628
Fair Value, Measurements, Recurring | Debt Securities Issued by Corporations
Assets:
Available-for-Sale: Fair Value	649,140	794,658
Fair Value, Measurements, Recurring | Residential - Government Agencies
Assets:
Available-for-Sale: Fair Value	631,947	732,828
Fair Value, Measurements, Recurring | Residential - U.S. Government-Sponsored Enterprises
Assets:
Available-for-Sale: Fair Value	699,349	793,871
Fair Value, Measurements, Recurring | Commercial - Government Agencies
Assets:
Available-for-Sale: Fair Value	131,190
Fair Value, Measurements, Recurring | Mortgage-Backed Securities
Assets:
Available-for-Sale: Fair Value	1,462,486	1,672,366
Fair Value, Measurements, Recurring | Commercial - Government Agencies or Sponsored Agencies
Assets:
Available-for-Sale: Fair Value		145,667
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets or Liabilities (Level 1)
Assets:
Available-for-Sale: Fair Value	142,059	141,944
Loans Held for Sale	0	0
Mortgage Servicing Rights	0	0
Other Assets	51,435	47,755
Derivatives	0	0
Total Assets Measured at Fair Value on a Recurring Basis	193,494	189,699
Liabilities:
Derivatives	$ 0	$ 0
Derivative Liability Statement Of Financial Position [ExtensibleEnumeration]	Other Liabilities	Other Liabilities
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	142,059	141,944
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
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets or Liabilities (Level 1) | Mortgage-Backed Securities
Assets:
Available-for-Sale: Fair Value	0	0
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets or Liabilities (Level 1) | Commercial - Government Agencies or Sponsored Agencies
Assets:
Available-for-Sale: Fair Value		0
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2)
Assets:
Available-for-Sale: Fair Value	2,245,265	2,702,879
Loans Held for Sale	1,450	1,035
Mortgage Servicing Rights	0	0
Other Assets	0	0
Derivatives	71	1,822
Total Assets Measured at Fair Value on a Recurring Basis	2,246,786	2,705,736
Liabilities:
Derivatives	$ 0	$ 70
Derivative Liability Statement Of Financial Position [ExtensibleEnumeration]	Other Liabilities	Other Liabilities
Total Liabilities Measured at Fair Value on a Recurring Basis	$ 0	$ 70
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	71,397	91,962
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Debt Securities Issued by States and Political Subdivisions
Assets:
Available-for-Sale: Fair Value	60,602	95,265
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Debt Securities Issued by Government-Sponsored Enterprises
Assets:
Available-for-Sale: Fair Value	1,640	48,628
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Debt Securities Issued by Corporations
Assets:
Available-for-Sale: Fair Value	649,140	794,658
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Residential - Government Agencies
Assets:
Available-for-Sale: Fair Value	631,947	732,828
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Residential - U.S. Government-Sponsored Enterprises
Assets:
Available-for-Sale: Fair Value	699,349	793,871
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Commercial - Government Agencies
Assets:
Available-for-Sale: Fair Value	131,190
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Mortgage-Backed Securities
Assets:
Available-for-Sale: Fair Value	1,462,486	1,672,366
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	685	717
Other Assets	0	0
Derivatives	210,663	45,895
Total Assets Measured at Fair Value on a Recurring Basis	211,348	46,612
Liabilities:
Derivatives	$ 202,394	$ 167,967
Derivative Liability Statement Of Financial Position [ExtensibleEnumeration]	Other Liabilities	Other Liabilities
Total Liabilities Measured at Fair Value on a Recurring Basis	$ 202,394	$ 167,967
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
Fair Value, Measurements, Recurring | Significant Other Unobservable Inputs (Level 3) | Mortgage-Backed Securities
Assets:
Available-for-Sale: Fair Value	$ 0	0
Fair Value, Measurements, Recurring | Significant Other Unobservable Inputs (Level 3) | Commercial - Government Agencies or Sponsored Agencies
Assets:
Available-for-Sale: Fair Value		$ 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, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation Calculation Roll Forward
Fair Value, Mortgage Servicing Rights, Beginning Balance	$ 695	$ 747	$ 717	$ 800
Fair Value, Mortgage Servicing Rights, Realized and Unrealized Net Gains (Losses) Included in Net Income	$ (10)	$ (15)	$ (32)	$ (68)
Fair Value Recurring Basis Unobservable Input Reconciliation Asset Gain Loss Statement Of Income Extensible List	Net Interest Income (Loss)	Net Interest Income (Loss)	Net Interest Income (Loss)	Net Interest Income (Loss)
Fair Value, Mortgage Servicing Rights, Ending Balance	$ 685	$ 732	$ 685	$ 732
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	202	(82,948)	(122,071)	23,904
Fair Value, Net Derivative Assets and Liabilities, Realized and Unrealized Net Gains (Losses) Included in Net Income	$ 7,878	$ 36	$ 8,772	$ (961)
Fair Value, Net Derivative Asset (Liability), Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Net Interest Income (Loss)	Net Interest Income (Loss)	Net Interest Income (Loss)	Net Interest Income (Loss)
Fair Value, Net Derivative Assets and Liabilities, Transfers to Loans Held for Sale	$ (187)	$ (284)	$ (498)	$ (111)
Variation margin payments for swap liabilities	376	(48,968)	122,066	(154,996)
Fair Value, Net Derivative Assets and Liabilities, Ending Balance	8,269	(132,164)	8,269	(132,164)
Fair Value, Net Derivative Assets and Liabilities,Total Unrealized Net Gains (Losses) Included in Net Income Related to Assets Still Held	$ 7,878	$ 36	$ 8,772	$ (961)

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, 2023 USD ($)	Dec. 31, 2022 USD ($)
Discounted Cash Flow | Interest Rate Swap
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	$ 8,155	$ (122,129)
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	0.1013	0.0993
Discounted Cash Flow | Weighted Average Credit Factor (as a percent) | Interest Rate Swap
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	0.0001	0.0001
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	$ 27,108	$ 28,040
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	0.0381	0.0402
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	$ 113	$ 58
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	0.9459	0.9286
Minimum [Member] | 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	0.0773	0.087
Minimum [Member] | Discounted Cash Flow | Weighted Average Credit Factor (as a percent) | Interest Rate Swap
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 [Member] | 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	2.86%	2.81%
Minimum [Member] | 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	0.835	0.841
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	0.1102	0.104
Maximum | Discounted Cash Flow | Weighted Average Credit Factor (as a percent) | Interest Rate Swap
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	0.0804	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	18.44%	10.63%
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	0.99	0.99

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, 2023	Dec. 31, 2022
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Net Carrying Amount	$ 20,588	$ 21,902
Valuation Allowance	$ 0	$ 0

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, 2023	Dec. 31, 2022
Fair Value Option Quantitative Disclosures [Line Items]
Aggregate Fair Value	$ 1,450	$ 1,035
Aggregate Unpaid Principal	1,461	1,016
Aggregate Fair Value Less Aggregate Unpaid Principal	$ (11)	$ 19

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, 2023	Dec. 31, 2022
Financial Instruments - Assets
Held-to-Maturity: Fair Value	$ 4,104,469	$ 4,615,393
Carrying Amount
Financial Instruments - Assets
Held-to-Maturity: Fair Value	5,088,013	5,414,139
Loans	13,651,759	13,371,226
Financial Instruments - Liabilities
Time Deposits	2,659,014	1,705,737
Securities Sold Under Agreements to Repurchase	150,490	725,490
Other Debt	550,000	400,000
Fair Value
Financial Instruments - Assets
Held-to-Maturity: Fair Value	4,104,469	4,615,393
Loans	12,416,800	12,386,615
Financial Instruments - Liabilities
Time Deposits	2,627,361	1,679,777
Securities Sold Under Agreements to Repurchase	151,963	718,614
Other Debt	538,987	402,877
Quoted Prices in Active Markets for Identical Assets or Liabilities (Level 1) | Fair Value
Financial Instruments - Assets
Held-to-Maturity: Fair Value	111,409	113,417
Loans	0	0
Financial Instruments - Liabilities
Time Deposits	0	0
Securities Sold Under Agreements to Repurchase	0	0
Other Debt	0	0
Significant Other Observable Inputs (Level 2) | Fair Value
Financial Instruments - Assets
Held-to-Maturity: Fair Value	3,993,060	4,501,976
Loans	0	0
Financial Instruments - Liabilities
Time Deposits	2,627,361	1,679,777
Securities Sold Under Agreements to Repurchase	151,963	718,614
Other Debt	538,987	402,877
Significant Other Unobservable Inputs (Level 3) | Fair Value
Financial Instruments - Assets
Held-to-Maturity: Fair Value	0	0
Loans	12,416,800	12,386,615
Financial Instruments - Liabilities
Time Deposits	0	0
Securities Sold Under Agreements to Repurchase	$ 0	0
Other Debt		$ 0