Northwest Bancshares (NWBI) 10-Q 7 Nov 24 2024 Q3 Quarterly report Financial data

Cover

Cover - shares	9 Months Ended
	Sep. 30, 2024	Oct. 31, 2024
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Sep. 30, 2024
Document Transition Report	false
Entity File Number	001-34582
Entity Registrant Name	NORTHWEST BANCSHARES, INC.
Entity Incorporation, State or Country Code	MD
Entity Tax Identification Number	27-0950358
Entity Address, Address Line One	3 Easton Oval
Entity Address, Address Line Two	Suite 500
Entity Address, City or Town	Columbus
Entity Address, State or Province	OH
Entity Address, Postal Zip Code	43219
City Area Code	814
Local Phone Number	726-2140
Title of 12(b) Security	Common Stock, $0.01 Par Value
Trading Symbol	NWBI
Security Exchange Name	NASDAQ
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		127,399,707
Entity Central Index Key	0001471265
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2024
Document Fiscal Period Focus	Q3

CONSOLIDATED STATEMENTS OF FINA

CONSOLIDATED STATEMENTS OF FINANCIAL CONDITION (Unaudited) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Assets
Cash and cash equivalents	$ 226,883	$ 122,260
Marketable securities available-for-sale (amortized cost of $1,248,104 and $1,240,003, respectively)	1,111,868	1,043,359
Marketable securities held-to-maturity (fair value of $672,641 and $699,506, respectively)	766,772	814,839
Total cash and cash equivalents and marketable securities	2,105,523	1,980,458
Loans held-for-sale	9,370	8,768
Loans held for investment	11,295,188	11,406,041
Allowance for credit losses	(125,813)	(125,243)
Loans receivable, net	11,178,745	11,289,566
FHLB stock, at cost	21,223	30,146
Accrued interest receivable	46,678	47,353
Real estate owned, net	76	104
Premises and equipment, net	126,391	138,838
Bank-owned life insurance	255,324	251,895
Goodwill	380,997	380,997
Other intangible assets, net	3,363	5,290
Other assets	236,005	294,458
Total assets	14,354,325	14,419,105
Liabilities:
Noninterest-bearing demand deposits	2,581,769	2,669,023
Interest-bearing demand deposits	2,676,779	2,634,546
Money market deposit accounts	1,956,747	1,968,218
Savings deposits	2,145,735	2,105,234
Time deposits	2,710,049	2,602,881
Total deposits	12,071,079	11,979,902
Borrowed funds	204,374	398,895
Subordinated debt	114,451	114,189
Junior subordinated debentures	129,769	129,574
Advances by borrowers for taxes and insurance	24,700	45,253
Accrued interest payable	15,125	13,669
Other liabilities	203,502	186,306
Total liabilities	12,763,000	12,867,788
Shareholders’ equity:
Preferred stock, $0.01 par value: 50,000,000 authorized, no shares issued	0	0
Common stock, $0.01 par value: 500,000,000 shares authorized, 127,400,199 and 127,110,453 shares issued and outstanding, respectively	1,274	1,271
Additional paid-in capital	1,030,384	1,024,852
Retained earnings	665,845	674,686
Accumulated other comprehensive loss	(106,178)	(149,492)
Total shareholders’ equity	1,591,325	1,551,317
Total liabilities and shareholders’ equity	$ 14,354,325	$ 14,419,105

CONSOLIDATED STATEMENTS OF FI_2

CONSOLIDATED STATEMENTS OF FINANCIAL CONDITION (Unaudited) (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Statement of Financial Position [Abstract]
Marketable securities available-for-sale, amortized cost	$ 1,248,104	$ 1,240,003
Securities held-to-maturity	$ 672,641	$ 699,506
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized (in shares)	50,000,000	50,000,000
Preferred stock, shares issued (in shares)	0	0
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	500,000,000	500,000,000
Common stock, shares issued (in shares)	127,400,199	127,110,453
Common stock, shares outstanding (in shares)	127,400,199	127,110,453

CONSOLIDATED STATEMENTS OF INCO

CONSOLIDATED STATEMENTS OF INCOME (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Interest income:
Loans receivable	$ 156,413	$ 140,667	$ 459,938	$ 397,136
Mortgage-backed securities	10,908	8,072	28,278	24,935
Taxable investment securities	842	786	2,364	2,472
Tax-free investment securities	512	491	1,460	1,858
FHLB stock dividends	394	668	1,499	2,202
Interest-earning deposits	2,312	914	4,935	1,931
Total interest income	171,381	151,598	498,474	430,534
Interest expense:
Deposits	54,198	31,688	154,638	64,743
Borrowed funds	5,881	11,542	22,455	36,410
Total interest expense	60,079	43,230	177,093	101,153
Net interest income	111,302	108,368	321,381	329,381
Provision for credit losses - loans	5,727	3,983	12,130	14,863
Provision/(benefit) for credit losses - unfunded commitments	(852)	(2,981)	(4,190)	65
Net interest income after provision for credit losses	106,427	107,366	313,441	314,453
Noninterest income:
Loss on sale of investments	0	0	(39,413)	(8,306)
Gain on sale of mortgage servicing rights	0	0	0	8,305
Gain on sale of SBA loans	667	301	2,997	1,412
Service charges and fees	15,932	15,270	46,982	43,292
Trust and other financial services income	7,924	7,085	22,617	20,400
Gain on real estate owned, net	105	29	649	922
Income from bank-owned life insurance	1,434	4,561	4,307	7,134
Mortgage banking income	744	632	2,097	2,184
Other operating income	1,027	3,010	6,711	9,311
Total noninterest income	27,833	30,888	46,947	84,654
Noninterest expense:
Compensation and employee benefits	56,186	51,243	161,257	145,497
Premises and occupancy costs	7,115	7,052	22,206	22,102
Office operations	2,811	3,398	9,397	9,208
Collections expense	474	551	1,216	1,367
Processing expenses	14,570	14,672	43,990	43,670
Marketing expenses	2,004	2,379	6,563	8,127
Federal deposit insurance premiums	2,763	2,341	8,651	6,628
Professional services	3,302	3,002	11,095	11,564
Amortization of intangible assets	590	795	1,926	2,546
Real estate owned expense	23	141	146	405
Merger, asset disposition and restructuring expense	43	0	2,913	4,395
Other expenses	886	1,996	3,851	5,369
Total noninterest expense	90,767	87,570	273,211	260,878
Income before income taxes	43,493	50,684	87,177	138,229
Federal and state income taxes expense	9,875	11,464	19,649	32,286
Net income	$ 33,618	$ 39,220	$ 67,528	$ 105,943
Basic earnings per share (in dollars per share)	$ 0.26	$ 0.31	$ 0.53	$ 0.83
Diluted earnings per share (in dollars per share)	$ 0.26	$ 0.31	$ 0.53	$ 0.83

CONSOLIDATED STATEMENTS OF COMP

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Statement of Comprehensive Income [Abstract]
Net income	$ 33,618	$ 39,220	$ 67,528	$ 105,943
Net unrealized holding gains/(losses) on marketable securities:
Unrealized holding gains/(losses), net of tax of ($8,980), $9,140, ($7,054) and $9,603, respectively	27,947	(29,715)	18,858	(34,417)
Reclassification adjustment for losses included in net income, net of tax of $0, $0, ($7,706) and ($1,731), respectively	0	0	26,789	5,636
Net unrealized holding gains/(losses) on marketable securities	27,947	(29,715)	45,647	(28,781)
Change in fair value of interest rate swaps, net of tax of $1,068, ($533), $342 and ($1,041), respectively	(3,654)	1,825	(1,170)	3,562
Defined benefit plan:
Actuarial reclassification adjustments for prior period service costs and actuarial gains included in net income, net of tax of $148, $152, $442 and $456, respectively	(387)	(382)	(1,163)	(1,146)
Other comprehensive income/(loss)	23,906	(28,272)	43,314	(26,365)
Total comprehensive income	$ 57,524	$ 10,948	$ 110,842	$ 79,578

CONSOLIDATED STATEMENTS OF CO_2

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) (Parenthetical) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Statement of Comprehensive Income [Abstract]
Unrealized holding losses, tax	$ (8,980)	$ 9,140	$ (7,054)	$ 9,603
Reclassification adjustment for losses included in net income, tax	0	0	(7,706)	(1,731)
Change in fair value of interest rate swaps, tax	1,068	(533)	342	(1,041)
Actuarial reclassification adjustments for prior period service costs and actuarial gains included in net income, tax	$ 148	$ 152	$ 442	$ 456

CONSOLIDATED STATEMENTS OF CHAN

CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY (Unaudited) - USD ($) $ in Thousands	Total	ASU 2022-02 Adoption	Common stock	Additional paid-in capital	Retained earnings	Retained earnings ASU 2022-02 Adoption	Accumulated other comprehensive income/(loss)
Beginning balance (in shares) at Dec. 31, 2022			127,028,848
Beginning balance at Dec. 31, 2022	$ 1,491,486	$ (329)	$ 1,270	$ 1,019,647	$ 641,727	$ (329)	$ (171,158)
Comprehensive income:
Net income	105,943				105,943
Other comprehensive income (loss), net of tax	(26,365)						(26,365)
Total comprehensive income	79,578				105,943		(26,365)
Exercise of stock options (in shares)			53,207
Exercise of stock options	610		$ 1	609
Stock-based compensation expense (in shares)			75,554
Stock-based compensation expense	3,335		$ 1	3,334
Stock-based compensation forfeited (in shares)			(56,260)
Stock-based compensation forfeited	0		$ (1)	1
Dividends paid	(76,249)				(76,249)
Ending balance (in shares) at Sep. 30, 2023			127,101,349
Ending balance at Sep. 30, 2023	1,498,431		$ 1,271	1,023,591	671,092		(197,523)
Beginning balance (in shares) at Jun. 30, 2023			127,088,963
Beginning balance at Jun. 30, 2023	1,511,501		$ 1,271	1,022,189	657,292		(169,251)
Comprehensive income:
Net income	39,220				39,220
Other comprehensive income (loss), net of tax	(28,272)						(28,272)
Total comprehensive income	10,948				39,220		(28,272)
Exercise of stock options (in shares)			11,523
Exercise of stock options	112			112
Stock-based compensation expense (in shares)			1,779
Stock-based compensation expense	1,290			1,290
Stock-based compensation forfeited (in shares)			(916)
Dividends paid	(25,420)				(25,420)
Ending balance (in shares) at Sep. 30, 2023			127,101,349
Ending balance at Sep. 30, 2023	$ 1,498,431		$ 1,271	1,023,591	671,092		(197,523)
Beginning balance (in shares) at Dec. 31, 2023	127,110,453		127,110,453
Beginning balance at Dec. 31, 2023	$ 1,551,317		$ 1,271	1,024,852	674,686		(149,492)
Comprehensive income:
Net income	67,528				67,528
Other comprehensive income (loss), net of tax	43,314						43,314
Total comprehensive income	110,842				67,528		43,314
Exercise of stock options (in shares)			101,123
Exercise of stock options	1,180		$ 1	1,179
Stock-based compensation expense (in shares)			213,906
Stock-based compensation expense	4,355		$ 2	4,353
Stock-based compensation forfeited (in shares)			(25,283)
Dividends paid	$ (76,369)				(76,369)
Ending balance (in shares) at Sep. 30, 2024	127,400,199		127,400,199
Ending balance at Sep. 30, 2024	$ 1,591,325		$ 1,274	1,030,384	665,845		(106,178)
Beginning balance (in shares) at Jun. 30, 2024			127,307,997
Beginning balance at Jun. 30, 2024	1,556,598		$ 1,273	1,027,703	657,706		(130,084)
Comprehensive income:
Net income	33,618				33,618
Other comprehensive income (loss), net of tax	23,906						23,906
Total comprehensive income	57,524				33,618		23,906
Exercise of stock options (in shares)			94,731
Exercise of stock options	1,099		$ 1	1,098
Stock-based compensation expense (in shares)			9,928
Stock-based compensation expense	1,583			1,583
Stock-based compensation forfeited (in shares)			(12,457)
Dividends paid	$ (25,479)				(25,479)
Ending balance (in shares) at Sep. 30, 2024	127,400,199		127,400,199
Ending balance at Sep. 30, 2024	$ 1,591,325		$ 1,274	$ 1,030,384	$ 665,845		$ (106,178)

CONSOLIDATED STATEMENTS OF CH_2

CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY (Unaudited) (Parenthetical) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2022
Statement of Stockholders' Equity [Abstract]
Other comprehensive income (loss), net of tax	$ (7,764)	$ 8,759	$ (13,976)	$ 7,287
Dividends paid, per share (in dollars per share)	$ 0.20	$ 0.20	$ 0.60	$ 0.60
Accounting Standards Update [Extensible List]					Accounting Standards Update 2022-02 [Member]

CONSOLIDATED STATEMENTS OF CASH

CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
Operating activities:
Net income	$ 67,528	$ 105,943
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for credit losses	7,940	14,928
Loss on sale of investments	39,413	8,306
Net (gain)/loss on sale of assets	(5,646)	743
Mortgage banking activity	(2,616)	5,342
Gain on sale of SBA loans	(2,873)	(1,390)
Gain on sale of mortgage servicing rights	0	(8,305)
Net depreciation, amortization and accretion	18,113	16,473
Decrease/(increase) in other assets	44,932	(114,158)
Increase in other liabilities	19,721	15,617
Net amortization on marketable securities	754	2,438
Noncash compensation expense related to stock benefit plans	4,355	3,335
Noncash write-down of other assets	6,140	37
Deferred income tax expense	2,641	(3,610)
Origination of loans held-for-sale	(150,354)	(137,789)
Proceeds from sale of loans held-for-sale	154,594	139,819
Net cash provided by operating activities	204,642	47,729
Investing activities:
Purchase of marketable securities available-for-sale	(383,192)	(23,502)
Proceeds from maturities and principal reductions of marketable securities held-to-maturity	47,482	50,517
Proceeds from maturities and principal reductions of marketable securities available-for-sale	59,925	81,803
Proceeds from sale of marketable securities available-for-sale	275,585	101,229
Proceeds from bank-owned life insurance	874	2,798
Loan originations	(2,729,306)	(2,928,360)
Proceeds from sale of mortgage servicing rights	0	13,118
Proceeds from loan maturities and principal reductions	2,820,106	2,524,676
Net proceeds/(redemptions) of FHLB stock	8,923	(261)
Proceeds from sale of real estate owned	746	1,343
Purchases of premises and equipment, net	(2,076)	(1,617)
Net cash provided by/(used in) investing activities	99,067	(178,256)
Financing activities:
Net increase in deposits	91,177	325,334
Net decrease in short-term borrowings	(194,521)	(76,578)
Decrease in advances by borrowers for taxes and insurance	(20,553)	(19,960)
Cash dividends paid on common stock	(76,369)	(76,249)
Proceeds from stock options exercised	1,180	610
Net cash (used in)/provided by financing activities	(199,086)	153,157
Net increase in cash and cash equivalents	104,623	22,630
Cash and cash equivalents at beginning of period	122,260	139,365
Net increase in cash and cash equivalents	104,623	22,630
Cash and cash equivalents at end of period	226,883	161,995
Cash paid during the period for:
Interest on deposits and borrowings (including interest credited to deposit accounts of $81,238 and $56,021, respectively)	175,637	96,469
Income taxes	15,245	38,236
Non-cash activities:
Loan foreclosures and repossessions	3,259	2,844
Sale of real estate owned financed by the Company	$ 0	$ 70

CONSOLIDATED STATEMENTS OF CA_2

CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) (Parenthetical) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
Statement of Cash Flows [Abstract]
Interest on deposits and borrowings, interest credited to deposit accounts	$ 81,238	$ 56,021

Basis of Presentation and Infor

Basis of Presentation and Informational Disclosures	9 Months Ended
	Sep. 30, 2024
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation and Informational Disclosures	Basis of Presentation and Informational Disclosures Northwest Bancshares, Inc. (the “Company” or “NWBI”), a Maryland corporation headquartered in Columbus, Ohio, is a bank holding company regulated by the Board of Governors of the Federal Reserve System (“FRB”). The primary activity of the Company is the ownership of all of the issued and outstanding common stock of Northwest Bank, a Pennsylvania-chartered savings bank (“Northwest”). Northwest is regulated by the Federal Deposit Insurance Corporation (“FDIC”) and the Pennsylvania Department of Banking. Northwest operates 141 community-banking offices throughout Pennsylvania, Western New York, Eastern Ohio, and Indiana. The accompanying unaudited Consolidated Financial Statements include the accounts of the Company and its subsidiary, Northwest, and Northwest’s subsidiaries Northwest Capital Group, Inc., Great Northwest Corporation, and Mutual Federal Interest Company, Inc. The unaudited Consolidated Financial Statements have been prepared in accordance with United States generally accepted accounting principles for interim financial information and with the instructions for Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the information or footnotes required for complete annual financial statements. In the opinion of management, all adjustments necessary for the fair presentation of the Company’s financial position and results of operations have been included. The Consolidated Financial Statements have been prepared using the accounting policies described in the financial statements included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2023 updated, as required, for any new pronouncements or changes. Certain items previously reported have been reclassified to conform to the current year’s reporting format. The results of operations for the quarter ended September 30, 2024 are not necessarily indicative of the results that may be expected for the year ending December 31, 2024, or any other period. Recently Adopted Accounting Standards In March 2023, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") No. 2023-02, " Investments—Equity Method and Joint Ventures (Topic 323): Accounting for Investments in Tax Credit Structures Using the Proportional Amortization Method

Marketable Securities

Marketable Securities	9 Months Ended
	Sep. 30, 2024
Investments, Debt and Equity Securities [Abstract]
Marketable Securities	Marketable Securities The following table shows the portfolio of marketable securities available-for-sale at September 30, 2024 (in thousands): Amortized Gross Gross Fair Debt issued by the U.S government and agencies: Due after ten years $ 46,292 — (8,497) 37,795 Debt issued by government-sponsored enterprises: Due after one year through five years 136 — (4) 132 Municipal securities: Due after one year through five years 884 18 (2) 900 Due after five years through ten years 15,729 277 (1,382) 14,624 Due after ten years 52,244 288 (6,971) 45,561 Corporate debt issues: Due after five years through ten years 25,396 307 (867) 24,836 Mortgage-backed securities: Fixed rate pass-through 222,573 2,926 (12,641) 212,858 Variable rate pass-through 3,905 57 (4) 3,958 Fixed rate agency CMOs 835,445 3,801 (113,373) 725,873 Variable rate agency CMOs 45,500 44 (213) 45,331 Total mortgage-backed securities 1,107,423 6,828 (126,231) 988,020 Total marketable securities available-for-sale $ 1,248,104 7,718 (143,954) 1,111,868 The following table shows the portfolio of marketable securities available-for-sale at December 31, 2023 (in thousands): Amortized Gross Gross Fair Debt issued by the U.S. government and agencies: Due after one year through five years $ 20,000 — (1,135) 18,865 Due after ten years 49,383 — (9,934) 39,449 Debt issued by government-sponsored enterprises: Due after one year through five years 45,986 — (5,763) 40,223 Due after five years through ten years 386 — (12) 374 Municipal securities: Due after one year through five years 4,279 22 (427) 3,874 Due after five years through ten years 20,725 — (1,437) 19,288 Due after ten years 60,762 125 (8,580) 52,307 Corporate debt issues: Due after five years through ten years 8,466 — (778) 7,688 Mortgage-backed securities: Fixed rate pass-through 209,069 27 (25,222) 183,874 Variable rate pass-through 7,140 11 (71) 7,080 Fixed rate agency CMOs 789,842 — (143,055) 646,787 Variable rate agency CMOs 23,965 38 (453) 23,550 Total mortgage-backed securities 1,030,016 76 (168,801) 861,291 Total marketable securities available-for-sale $ 1,240,003 223 (196,867) 1,043,359 The following table shows the portfolio of marketable securities held-to-maturity at September 30, 2024 (in thousands): Amortized Gross Gross Fair Debt issued by government-sponsored enterprises: Due after one year through five years $ 109,460 — (10,520) 98,940 Due after five years through ten years 15,000 — (1,923) 13,077 Mortgage-backed securities: Fixed rate pass-through 136,439 — (16,184) 120,255 Variable rate pass-through 387 — — 387 Fixed rate agency CMOs 504,957 — (65,502) 439,455 Variable rate agency CMOs 529 — (2) 527 Total mortgage-backed securities 642,312 — (81,688) 560,624 Total marketable securities held-to-maturity $ 766,772 — (94,131) 672,641 The following table shows the portfolio of marketable securities held-to-maturity at December 31, 2023 (in thousands): Amortized Gross Gross Fair Debt issued by government-sponsored enterprises: Due after one year through five years $ 69,471 — (8,100) 61,371 Due after five years through ten years 54,987 — (8,700) 46,287 Mortgage-backed securities: Fixed rate pass-through 147,874 — (20,834) 127,040 Variable rate pass-through 449 1 — 450 Fixed rate agency CMOs 541,529 — (77,694) 463,835 Variable rate agency CMOs 529 — (6) 523 Total mortgage-backed securities 690,381 1 (98,534) 591,848 Total marketable securities held-to-maturity $ 814,839 1 (115,334) 699,506 The following table shows the contractual maturity of our mortgage-backed securities available-for-sale at September 30, 2024 (in thousands): Amortized Fair Mortgage-backed securities: Due within one year $ 42 43 Due after one year through five years 10,889 10,807 Due after five years through ten years 8,723 7,928 Due after ten years 1,087,769 969,242 Total mortgage-backed securities $ 1,107,423 988,020 The following table shows the contractual maturity of our mortgage-backed securities held-to-maturity at September 30, 2024 (in thousands): Amortized Fair Mortgage-backed securities: Due within one year $ 64 62 Due after one year through five years 19,983 18,219 Due after five years through ten years 20,192 17,088 Due after ten years 602,073 525,255 Total mortgage-backed securities $ 642,312 560,624 The following table shows the fair value of and gross unrealized losses on available-for-sale investment securities and held to maturity investment securities, for which an allowance for credit losses has not been recorded, aggregated by investment category and length of time that the individual securities have been in a continuous unrealized loss position at September 30, 2024 (in thousands): Less than 12 months 12 months or more Total Fair Unrealized Fair Unrealized Fair Unrealized U.S. government-sponsored enterprises $ — — 149,944 (20,944) 149,944 (20,944) Municipal securities — — 41,002 (8,355) 41,002 (8,355) Corporate issues 2,677 (92) 7,694 (775) 10,371 (867) Mortgage-backed securities - agency 50,187 (174) 1,183,798 (207,745) 1,233,985 (207,919) Total $ 52,864 (266) 1,382,438 (237,819) 1,435,302 (238,085) The following table shows the fair value of and gross unrealized losses on available-for-sale investment securities and held to maturity investment securities, for which an allowance for credit losses has not been recorded, aggregated by investment category and length of time that the individual securities have been in a continuous unrealized loss position at December 31, 2023 (in thousands): Less than 12 months 12 months or more Total Fair Unrealized Fair Unrealized Fair Unrealized U.S. government-sponsored enterprises $ — — 206,569 (33,644) 206,569 (33,644) Corporate debt issues — — 7,688 (778) 7,688 (778) Municipal securities 2,753 (81) 66,046 (10,363) 68,799 (10,444) Mortgage-backed securities - agency 17,976 (242) 1,423,707 (267,093) 1,441,683 (267,335) Total $ 20,729 (323) 1,704,010 (311,878) 1,724,739 (312,201) The Company does not believe that the available-for-sale debt securities that were in an unrealized loss position as of September 30, 2024, which were comprised of 325 individual securities, represent a credit loss impairment. All of these securities were issued by U.S. government agencies, U.S. government-sponsored enterprises, local municipalities, or represent corporate debt. The securities issued by the U.S. government agencies or U.S. government-sponsored enterprises are either explicitly or implicitly guaranteed by the U.S. government, are highly rated by major rating agencies and have a long history of no credit losses. The securities issued by local municipalities and the corporate debt issues were all highly rated by major rating agencies and have no history of credit losses. The unrealized losses were primarily attributable to changes in the interest rate environment and not due to the credit quality of these investment securities. As of September 30, 2024, t he Company does not have the intent to sell these investment securities and it is more likely than not that we will not be required to sell these securities before their anticipated recovery, which may be at maturity. All of the Company ’ s held-to-maturity debt securities are issued by U.S. government agencies or U.S. government-sponsored enterprises. These securities are either explicitly or implicitly guaranteed by the U.S. government, are highly rated by major rating agencies and have a long history of no credit losses. The decline in fair value of the held-to-maturity debt securities were primarily attributable to changes in the interest rate environment and not due to the credit quality of these investment securities, therefore, the Company did not record an allowance for credit losses for these securities as of September 30, 2024. The following table presents the credit quality of our held-to-maturity securities, based on the latest information available as of September 30, 2024 (in thousands). The credit ratings are sourced from nationally recognized rating agencies, which include Moody’s and S&P, and they are presented based on asset type. All of our held-to-maturity securities were current in their payment of principal and interest as of September 30, 2024. AA+ Total Held-to-maturity securities (at amortized cost): Debt issued by the U.S. government-sponsored enterprises $ 124,460 124,460 Mortgage-backed securities 642,312 642,312 Total marketable securities held-to-maturity $ 766,772 766,772

Loans Receivable

Loans Receivable	9 Months Ended
	Sep. 30, 2024
Receivables [Abstract]
Loans Receivable	Loans Receivable The following table shows a summary of our loans receivable at amortized cost basis at September 30, 2024 and December 31, 2023 (in thousands): September 30, 2024 December 31, 2023 Originated (1) Acquired (2) Total Originated (1) Acquired (2) Total Personal Banking: Residential mortgage loans (3) $ 3,128,027 130,131 3,258,158 3,283,299 144,886 3,428,185 Home equity loans 1,063,095 104,107 1,167,202 1,103,410 124,448 1,227,858 Vehicle loans 1,824,554 50,393 1,874,947 1,943,540 65,061 2,008,601 Consumer loans 95,406 27,679 123,085 111,446 5,980 117,426 Total Personal Banking 6,111,082 312,310 6,423,392 6,441,695 340,375 6,782,070 Commercial Banking: Commercial real estate loans (4) 2,422,509 210,672 2,633,181 2,389,537 238,920 2,628,457 Commercial real estate loans - owner occupied 337,561 23,637 361,198 319,195 26,358 345,553 Commercial loans 1,881,643 5,144 1,886,787 1,623,481 35,248 1,658,729 Total Commercial Banking 4,641,713 239,453 4,881,166 4,332,213 300,526 4,632,739 Total loans receivable, gross 10,752,795 551,763 11,304,558 10,773,908 640,901 11,414,809 Allowance for credit losses (120,883) (4,930) (125,813) (118,079) (7,164) (125,243) Total loans receivable, net (5) $ 10,631,912 546,833 11,178,745 10,655,829 633,737 11,289,566 (1) Includes originated and loan pools purchased in an asset acquisition. (2) Includes loans subject to purchase accounting in a business combination. (3) Includ es $9 million of l oans held-for-sale at September 30, 2024 and December 31, 2023. (4) Includes $0 of loans held-for-sale at September 30, 2024 and December 31, 2023. (5) Includes $60 million and $68 million of net unearned income, unamortized premiums and discounts and deferred fees and costs at September 30, 2024 and December 31, 2023. The following table provides information related to the allowance for credit losses by portfolio segment and by class of financing receivable for the quarter ended September 30, 2024 (in thousands): Balance as of September 30, 2024 Current period provision Charge-offs Recoveries Balance as of June 30, 2024 Allowance for Credit Losses Personal Banking: Residential mortgage loans $ 13,553 (1,444) (255) 253 14,999 Home equity loans 4,704 187 (890) 197 5,210 Vehicle loans 22,162 2,371 (2,064) 491 21,364 Consumer loans 1,869 1,327 (1,496) 370 1,668 Total Personal Banking 42,288 2,441 (4,705) 1,311 43,241 Commercial Banking: Commercial real estate loans 48,613 (1,577) (475) 106 50,559 Commercial real estate loans - owner occupied 3,849 223 — 11 3,615 Commercial loans 31,063 4,640 (1,580) 348 27,655 Total Commercial Banking 83,525 3,286 (2,055) 465 81,829 Total $ 125,813 5,727 (6,760) 1,776 125,070 Allowance for Credit Losses - off-balance sheet exposure Personal Banking: Residential mortgage loans $ — (1) — — 1 Home equity loans 59 (4) — — 63 Total Personal Banking 59 (5) — — 64 Commercial Banking: Commercial real estate loans 3,407 (1,043) — — 4,450 Commercial real estate loans - owner occupied 159 8 — — 151 Commercial loans 9,308 188 — — 9,120 Total Commercial Banking 12,874 (847) — — 13,721 Total off-balance sheet exposure $ 12,933 (852) — — 13,785 The following table provides information related to the allowance for credit losses by portfolio segment and by class of financing receivable for the quarter ended September 30, 2023 (in thousands): Balance as of September 30, 2023 Current period provision Charge-offs Recoveries Balance as of June 30, 2023 Allowance for Credit Losses Personal Banking: Residential mortgage loans $ 17,090 (370) (171) 75 17,556 Home equity loans 5,044 201 (320) 161 5,002 Vehicle loans 27,226 984 (1,524) 483 27,283 Consumer loans 1,202 1,436 (1,561) 317 1,010 Total Personal Banking 50,562 2,251 (3,576) 1,036 50,851 Commercial Banking: Commercial real estate loans 48,582 (1,110) (484) 120 50,056 Commercial real estate loans - owner occupied 3,479 (30) — 11 3,498 Commercial loans 22,218 2,872 (1,286) 614 20,018 Total Commercial Banking 74,279 1,732 (1,770) 745 73,572 Total $ 124,841 3,983 (5,346) 1,781 124,423 Allowance for Credit Losses - off-balance sheet exposure Personal Banking: Residential mortgage loans $ 3 (1) — — 4 Home equity loans 67 3 — — 64 Total Personal Banking 70 2 — — 68 Commercial Banking: Commercial real estate loans 4,797 (2,858) — — 7,655 Commercial real estate loans - owner occupied 140 (180) — — 320 Commercial loans 7,971 55 — — 7,916 Total Commercial Banking 12,908 (2,983) — — 15,891 Total off-balance sheet exposure $ 12,978 (2,981) — — 15,959 The following table provides information related to the allowance for credit losses by portfolio segment and by class of financing receivable for the nine months ended September 30, 2024 (in thousands): Balance Current period provision Charge-offs Recoveries Balance December 31, 2023 Allowance for Credit Losses Personal Banking: Residential mortgage loans $ 13,553 (5,218) (669) 1,247 18,193 Home equity loans 4,704 53 (1,539) 787 5,403 Vehicle loans 22,162 444 (6,578) 1,385 26,911 Consumer loans 1,869 3,610 (4,116) 1,176 1,199 Total Personal Banking 42,288 (1,111) (12,902) 4,595 51,706 Commercial Banking: Commercial real estate loans 48,613 (2,289) (1,324) 959 51,267 Commercial real estate loans - owner occupied 3,849 42 — 32 3,775 Commercial loans 31,063 15,488 (4,062) 1,142 18,495 Total Commercial Banking 83,525 13,241 (5,386) 2,133 73,537 Total $ 125,813 12,130 (18,288) 6,728 125,243 Allowance for Credit Losses - off-balance sheet exposure Personal Banking: Residential mortgage loans $ — (2) — — 2 Home equity loans 59 (6) — — 65 Total Personal Banking 59 (8) — — 67 Commercial Banking: Commercial real estate loans 3,407 (2,740) — — 6,147 Commercial real estate loans - owner occupied 159 (14) — — 173 Commercial loans 9,308 (1,428) — — 10,736 Total Commercial Banking 12,874 (4,182) — — 17,056 Total off-balance sheet exposure $ 12,933 (4,190) — — 17,123 The following table provides information related to the allowance for credit losses by portfolio segment and by class of financing receivable for the nine months ended September 30, 2023 (in thousands): Balance Current period provision Charge-offs Recoveries ASU 2022-02 Adoption Balance December 31, 2022 Allowance for Credit Losses Personal Banking: Residential mortgage loans $ 17,090 (2,047) (923) 799 — 19,261 Home equity loans 5,044 (705) (719) 566 — 5,902 Vehicle loans 27,226 7,267 (4,731) 1,631 — 23,059 Consumer loans 1,202 3,463 (3,860) 934 — 665 Total Personal Banking 50,562 7,978 (10,233) 3,930 — 48,887 Commercial Banking: Commercial real estate loans 48,582 3,587 (1,556) 1,619 426 44,506 Commercial real estate loans - owner occupied 3,479 (515) (68) 58 — 4,004 Commercial loans 22,218 3,813 (3,360) 1,126 — 20,639 Total Commercial Banking 74,279 6,885 (4,984) 2,803 426 69,149 Total $124,841 14,863 (15,217) 6,733 426 118,036 Allowance for Credit Losses - off-balance sheet exposure Personal Banking: Residential mortgage loans 3 (1) — — — 4 Home equity loans 67 (7) — — — 74 Total Personal Banking 70 (8) — — — 78 Commercial Banking: Commercial real estate loans 4,797 (578) — — — 5,375 Commercial real estate loans - owner occupied 140 (239) — — — 379 Commercial loans 7,971 890 — — — 7,081 Total Commercial Banking 12,908 73 — — — 12,835 Total off-balance sheet exposure $ 12,978 65 — — — 12,913 The following table provides information related to the loan portfolio by portfolio segment and by class of financing receivable at September 30, 2024 (in thousands): Total loans Allowance for Nonaccrual Loans 90 days past due and accruing Personal Banking: Residential mortgage loans $ 3,258,158 13,553 7,541 — Home equity loans 1,167,202 4,704 4,041 — Vehicle loans 1,874,947 22,162 5,009 — Consumer loans 123,085 1,869 196 717 Total Personal Banking 6,423,392 42,288 16,787 717 Commercial Banking: Commercial real estate loans 2,633,181 48,613 42,612 — Commercial real estate loans - owner occupied 361,198 3,849 859 — Commercial loans 1,886,787 31,063 16,570 328 Total Commercial Banking 4,881,166 83,525 60,041 328 Total $ 11,304,558 125,813 76,828 1,045 The following table provides information related to the loan portfolio by portfolio segment and by class of financing receivable at December 31, 2023 (in thousands): Total loans Allowance for Nonaccrual Loans 90 days past due and accruing Personal Banking: Residential mortgage loans $ 3,428,185 18,193 8,727 1,671 Home equity loans 1,227,858 5,403 4,492 26 Vehicle loans 2,008,601 26,911 4,816 44 Consumer loans 117,426 1,199 229 722 Total Personal Banking 6,782,070 51,706 18,264 2,463 Commercial Banking: Commercial real estate loans 2,628,457 51,267 71,297 225 Commercial real estate loans - owner occupied 345,553 3,775 676 — Commercial loans 1,658,729 18,495 4,147 10 Total Commercial Banking 4,632,739 73,537 76,120 235 Total $ 11,414,809 125,243 94,384 2,698 We present the amortized cost of our loans on nonaccrual status including such loans with no allowance. The following table presents the amortized cost of our loans on nonaccrual status as of the beginning and end of the period ended September 30, 2024 (in thousands): September 30, 2024 Nonaccrual loans at January 1, 2024 Nonaccrual loans with an allowance Nonaccrual loans with no allowance Total nonaccrual loans at the end of the period Loans 90 days past due and accruing Personal Banking: Residential mortgage loans $ 8,727 6,707 834 7,541 — Home equity loans 4,492 3,900 141 4,041 — Vehicle loans 4,816 4,024 985 5,009 — Consumer loans 229 196 — 196 717 Total Personal Banking 18,264 14,827 1,960 16,787 717 Commercial Banking: Commercial real estate loans 71,297 22,695 19,917 42,612 — Commercial real estate loans - owner occupied 676 859 — 859 — Commercial loans 4,147 16,408 162 16,570 328 Total Commercial Banking 76,120 39,962 20,079 60,041 328 Total $ 94,384 54,789 22,039 76,828 1,045 During the three and nine months ended September 30, 2024, we d id not recognize any interest income on nonaccrual loans. The following table presents the amortized cost of our loans on nonaccrual status as of the beginning and end of the year ended December 31, 2023 (in thousands): December 31, 2023 Nonaccrual loans at January 1, 2023 Nonaccrual loans with an allowance Nonaccrual loans with no allowance Total nonaccrual loans at the end of the period Loans 90 days past due and accruing Personal Banking: Residential mortgage loans $ 7,574 8,304 423 8,727 1,671 Home equity loans 4,145 4,084 408 4,492 26 Vehicle loans 3,771 4,187 629 4,816 44 Consumer loans 256 229 — 229 722 Total Personal Banking 15,746 16,804 1,460 18,264 2,463 Commercial Banking: Commercial real estate loans 62,239 47,359 23,938 71,297 225 Commercial real estate loans - owner occupied 624 676 — 676 — Commercial loans 2,627 3,996 151 4,147 10 Total Commercial Banking 65,490 52,031 24,089 76,120 235 Total $ 81,236 68,835 25,549 94,384 2,698 During the year ended December 31, 2023, we did not recognize any interest income on nonaccrual loans. A loan is considered to be collateral dependent when the borrower is experiencing financial difficulty and repayment is expected to be provided substantially through the sale or operation of the collateral. The following table presents the amortized cost basis of collateral-dependent loans by class of loans and collateral type as of as of September 30, 2024 (in thousands): Real estate Equipment Other Total Commercial Banking: Commercial real estate loans $ 36,268 — — 36,268 Commercial loans 3,014 5,061 2,583 10,658 Total Commercial Banking 39,282 5,061 2,583 46,926 Total $ 39,282 5,061 2,583 46,926 The following table presents the amortized cost basis of collateral-dependent loans by class of loans as of December 31, 2023 (in thousands): Real estate Total Commercial Banking: Commercial real estate loans $ 66,934 66,934 Commercial loans 150 150 Total Commercial Banking 67,084 67,084 Total $ 67,084 67,084 Occasionally, the Company modifies loans to borrowers in financial distress by providing principal forgiveness, term extensions, an other-than-insignificant payment delay, or interest rate reduction. When principal forgiveness is provided, the amount of forgiveness is charged off against the allowance for credit losses. In some cases, the Company provides multiple types of concessions to one loan. Typically, one type of concession, such as a term extension, is granted initially. If the borrower continues to experience financial difficulty, another concession, such as principal forgiveness, may be granted. For loans included in the "combination" columns below, multiple types of modifications have been made on the same loan within the current reporting period. The combination is at least two of the following: a term extension, principal forgiveness, an other-than-insignificant payment delay, and/or an interest rate reduction. The following table presents the amortized cost basis of loans for the periods indicated that were both experiencing financial difficulty and modified during the respective period, by class and by type of modification. The percentage of the amortized cost basis of loans that were modified to borrowers in financial distress as compared to the amortized cost basis of each class of financial receivable is also presented below (dollars in thousands). For the quarter ended September 30, 2024 2023 Payment delay Term extension Combination term extension and interest rate reduction Total class of financing receivable Term extension Combination term extension and interest rate reduction Total class of financing receivable Personal Banking: Residential mortgage loans $ — $ 494 — 0.02 % 192 — 0.01 % Home equity loans — 29 — 0.00 % 122 85 0.02 % Consumer loans — — 11 0.01 % — — — % Total Personal Banking — 523 11 0.01 % 314 85 0.01 % Commercial Banking: Commercial real estate loans 1,357 — — 0.05 % — — — % Commercial loans — 35 — — % 15 — — % Total Commercial Banking 1,357 35 — 0.03 % 15 — — % Total $ 1,357 $ 558 11 0.02 % 329 85 0.00 % For the nine months ended September 30, 2024 2023 Payment delay Term extension Interest rate reduction Combination term extension and interest rate reduction Total class of financing receivable Term extension Combination term extension and interest rate reduction Total class of financing receivable Personal Banking: Residential mortgage loans $ — 979 — — 0.03 % 450 — 0.01 % Home equity loans — 551 — 84 0.05 % 283 85 0.03 % Consumer loans — — — 13 0.01 % — 3 — % Total Personal Banking — 1,530 — 97 0.03 % 733 88 0.01 % Commercial Banking: Commercial real estate loans 1,628 202 — — 0.07 % 197 — 0.01 % Commercial real estate loans - owner occupied — — 680 — 0.19 % — — — % Commercial loans — 35 — 8 — % 663 — 0.04 % Total Commercial Banking 1,628 237 680 8 0.05 % 860 — 0.02 % Total $ 1,628 1,767 680 105 0.04 % 1,593 88 0.01 % The following table presents the effect of the loan modifications presented above to borrowers experiencing financial difficulty for the periods indicated: For the quarter ended September 30, 2024 2023 Weighted-average interest rate reduction Weighted-average term extension in months Weighted-average payment deferral in years Weighted-average interest rate reduction Weighted-average term extension in months Personal Banking: Residential mortgage loans — % 156 0 — % 169 Home equity loans — % 105 0 5 % 112 Consumer loans 5 % 10 0 12 % 0 Total Personal Banking 5 % 151 0 17 % 140 Commercial Banking: Commercial real estate loans — % 0 0.3 — % 0 Commercial loans — % 6 0 — % 23 Total Commercial Banking — % 6 0.3 — % 23 Total loans 5 % 142 0.3 17 % 135 For the nine months ended September 30, 2024 2023 Weighted-average interest rate reduction Weighted-average term extension in months Weighted-average payment deferral in years Weighted-average interest rate reduction Weighted-average term extension in months Personal Banking: Residential mortgage loans — % 151 0 — 149 Home equity loans 2 % 99 0 5 % 96 Consumer loans 6 % 66 0 12 % 356 Total Personal Banking 3 % 130 0 17 % 126 Commercial Banking: Commercial real estate loans — % 117 0.5 — 25 Commercial real estate loans - owner occupied 2 % 0 0 — 0 Commercial loans 4 % 32 0 — 9 Total Commercial Banking 2 % 102 0.5 — 13 Total loans 2 % 126 0.5 17 % 68 The Company closely monitors the performance of loans that are modified to borrowers experiencing financial difficulty to understand the effectiveness of its modification efforts. The following table presents the performance of loans modified within the previous twelve months of September 30, 2024 (in thousands) : Current 30-59 days 60-89 days 90 days or Personal Banking: Residential mortgage loans $ 976 — — 3 Home equity loans 525 13 9 88 Consumer loans 13 — — — Total Personal Banking 1,514 13 9 91 Commercial Banking: Commercial real estate loans 1,830 — — — Commercial real estate loans - owner occupied 680 — — — Commercial loans 43 — — — Total Commercial Banking 2,553 — — — Total loans $ 4,067 13 9 91 The following table presents the performance of loans modified since the adoption of ASU 2022-02 as of September 30, 2023 (in thousands) : Current 30-59 days 60-89 days 90 days or Personal Banking: Residential mortgage loans $ 450 — — — Home equity loans 368 — — — Consumer loans 3 — — — Total Personal Banking 821 — — — Commercial Banking: Commercial real estate loans 74 — — 123 Commercial loans — 15 — 648 Total Commercial Banking 74 15 — 771 Total loans $ 895 15 — 771 A modification is considered to be in default when the loan is 90 days or more past due. The following table provides the amortized cost basis of financing receivables that had a payment default during the period ended September 30, 2024 and were modified within the previous twelve months to borrowers experiencing financial difficulty (in thousands) : Term extension Personal Banking: Residential mortgage loans $ 3 Home equity loans 88 Total Personal Banking 91 Total $ 91 The following table provides the amortized cost basis of financing receivables that had a payment default during the period ended September 30, 2023 and were modified since the adoption of ASU 2022-02 to borrowers experiencing financial difficulty (in thousands) : Term extension Commercial Banking: Commercial real estate loans $ 123 Commercial loans 648 Total Commercial Banking 771 Total $ 771 The modifications to borrowers experiencing financial distress are included in their respective portfolio segment and the current loan balance and updated loan terms are run through their respective ACL models to arrive at the quantitative portion of the ACL. Subsequent performance of the loans will be measured by delinquency status and will be captured through our ACL models or our qualitative factor assessment, as deemed appropriate. If we no longer believe the loan demonstrates similar risks to their respective portfolio segment an individual assessment will be performed. Upon the Company's determination that a modified loan (or portion of a loan) has subsequently been deemed uncollectible, the loan (or a portion of the loan) is written off. Therefore, the amortized cost basis of the loan is reduced by the uncollectible amount and the allowance for credit losses is adjusted by the same amount. The following table provides information related to the amortized cost basis of loan payment delinquencies at September 30, 2024 (in thousands): 30-59 days 60-89 days 90 days or Total Current Total loans 90 days or Personal Banking: Residential mortgage loans $ 685 9,027 5,370 15,082 3,243,076 3,258,158 — Home equity loans 3,907 882 2,558 7,347 1,159,855 1,167,202 — Vehicle loans 9,808 3,166 3,077 16,051 1,858,896 1,874,947 — Consumer loans 969 434 906 2,309 120,776 123,085 717 Total Personal Banking 15,369 13,509 11,911 40,789 6,382,603 6,423,392 717 Commercial Banking: Commercial real estate loans 5,919 7,643 6,167 19,729 2,613,452 2,633,181 — Commercial real estate loans - owner occupied — — — — 361,198 361,198 — Commercial loans 3,260 753 14,484 18,497 1,868,290 1,886,787 328 Total Commercial Banking 9,179 8,396 20,651 38,226 4,842,940 4,881,166 328 Total loans $ 24,548 21,905 32,562 79,015 11,225,543 11,304,558 1,045 The following table provides information related to the amortized cost basis of loan payment delinquencies at December 31, 2023 (in thousands): 30-59 days 60-89 days 90 days or Total Current Total loans 90 days or Personal Banking: Residential mortgage loans $ 30,041 7,796 7,995 45,832 3,382,353 3,428,185 1,671 Home equity loans 5,761 982 3,126 9,869 1,217,989 1,227,858 26 Vehicle loans 10,382 3,326 3,051 16,759 1,991,842 2,008,601 44 Consumer loans 829 428 927 2,184 115,242 117,426 722 Total Personal Banking 47,013 12,532 15,099 74,644 6,707,426 6,782,070 2,463 Commercial Banking: Commercial real estate loans 2,010 1,031 6,535 9,576 2,618,881 2,628,457 225 Commercial real estate loans - owner occupied 1,194 — 177 1,371 344,182 345,553 — Commercial loans 4,196 703 2,780 7,679 1,651,050 1,658,729 10 Total Commercial Banking 7,400 1,734 9,492 18,626 4,614,113 4,632,739 235 Total originated loans $ 54,413 14,266 24,591 93,270 11,321,539 11,414,809 2,698 Credit Quality Indicators: For Commercial Banking we categorize loans into risk categories based on relevant information about the ability of borrowers to service their debt such as: current financial information, historical payment experience, credit documentation, public information, and current economic trends, among other factors. We analyze loans individually by classifying the loans by credit risk. Credit relationships greater than or equal to $1.0 million classified as special mention or substandard are reviewed quarterly for deterioration or improvement to determine if the loan is appropriately classified. We use the following definitions for risk ratings other than pass: Special Mention — Loans designated as special mention have specific, well-defined risk issues, which create a high level of uncertainty regarding the long-term viability of the business. Loans in this class are considered to have high-risk characteristics. A special mention loan exhibits material negative financial trends due to company-specific or systemic conditions. If these potential weaknesses are not mitigated, they threaten the borrower’s capacity to meet its debt obligations. Special mention loans still demonstrate sufficient financial flexibility to react to and positively address the root cause of the adverse financial trends without significant deviations from their current business strategy. Their potential weaknesses deserve our close attention and warrant enhanced monitoring. Substandard — Loans classified as substandard are inadequately protected by the current net worth and payment capacity of the obligor or of the collateral pledged, if any. Loans so classified have a well-defined weakness or weaknesses that jeopardize the liquidation of the debt. They are characterized by the distinct possibility that we will sustain some loss if the deficiencies are not corrected. Doubtful — Loans classified as doubtful have all the weaknesses inherent in those classified as substandard. In addition, those weaknesses make collection or liquidation in full highly questionable and improbable. A loan classified as doubtful exhibits discernible loss potential, but a complete loss seems very unlikely. The possibility of a loss on a doubtful loan is high, but because of certain important and reasonably specific pending factors that may strengthen the loan, its classification as an estimated loss is deferred until a more exact status can be determined. Loss — Loans classified as loss are considered uncollectible and of such value that the continuance as a loan is not warranted. A loss classification does not mean that the loan has no recovery or salvage value; instead, it means that it is not practical or desirable to defer writing off all or a portion of a basically worthless loan even though partial recovery may be possible in the future. For Personal Banking loans a pass risk rating is maintained until they are 90 days or greater past due, and risk rating reclassification is based primarily on past due status of the loan. The risk rating categories can generally be described by the following groupings: Pass — Loans classified as pass are homogeneous loans that are less than 90 days past due from the required payment date at month-end. Substandard — Loans classified as substandard are homogeneous loans that are greater than 90 days past due from the required payment date at month-end, or homogenous retail loans that are greater than 180 days past due from the required payment date at month-end that has been written down to the value of underlying collateral, less costs to sell. Doubtful — Loans classified as doubtful are homogeneous loans that are greater than 180 days past due from the required payment date at month-end and not written down to the value of underlying collateral. These loans are generally charged-off in the month in which the 180 day period elapses. The following table presents the amortized cost basis of our loan portfolio by year of origination and credit quality indicator and the current period charge-offs by year of origination for each portfolio segment as of September 30, 2024 (in thousands): YTD September 30, 2024 2023 2022 2021 2020 Prior Revolving loans Revolving loans converted to term loans Total loans Personal Banking: Residential mortgage loans Pass $ 23,970 195,945 638,920 759,324 478,181 1,150,387 — — 3,246,727 Substandard — 51 1,401 267 259 9,453 — — 11,431 Total residential mortgage loans 23,970 195,996 640,321 759,591 478,440 1,159,840 — — 3,258,158 Residential mortgage current period charge-offs — — (262) — (113) (294) — — (669) Home equity loans Pass 22,491 61,170 89,615 92,832 129,272 248,594 474,033 44,944 1,162,951 Substandard — — 120 91 162 1,613 1,308 957 4,251 Total home equity loans 22,491 61,170 89,735 92,923 129,434 250,207 475,341 45,901 1,167,202 Home equity current period charge-offs — — (41) (2) (197) (411) (557) (331) (1,539) Vehicle loans Pass 453,937 503,197 497,117 265,552 78,513 71,623 — — 1,869,939 Substandard 157 1,086 1,717 1,276 307 465 — — 5,008 Total vehicle loans 454,094 504,283 498,834 266,828 78,820 72,088 — — 1,874,947 Vehicle current period charge-offs (78) (1,705) (1,974) (1,644) (323) (854) — — (6,578) Consumer loans Pass 22,809 16,742 7,426 3,339 997 6,704 63,495 659 122,171 Substandard 3 61 25 8 — 14 722 81 914 Total consumer loans 22,812 16,803 7,451 3,347 997 6,718 64,217 740 123,085 Consumer loan current period charge-offs (349) (1,736) (470) (198) (62) (725) (543) (33) (4,116) Total Personal Banking 523,367 778,252 1,236,341 1,122,689 687,691 1,488,853 539,558 46,641 6,423,392 Commercial Banking: Commercial real estate loans Pass 133,296 240,845 481,825 261,936 293,395 871,032 24,784 23,890 2,331,003 Special mention — 4,294 17,645 18,323 14,570 15,376 746 — 70,954 Substandard — 6,902 41,510 48,625 21,533 112,403 175 76 231,224 Total commercial real estate loans 133,296 252,041 540,980 328,884 329,498 998,811 25,705 23,966 2,633,181 Commercial real estate current period charge-offs — — (44) (360) — (920) — — (1,324) Commercial real estate loans - owner occupied Pass 52,440 13,999 28,641 46,102 12,138 148,673 1,991 — 303,984 Special mention — 1,184 7,194 1,293 — 7,068 — — 16,739 Substandard — 12,865 875 — 4,595 18,679 751 2,710 40,475 Total commercial real estate loans - owner occupied 52,440 28,048 36,710 47,395 16,733 174,420 2,742 2,710 361,198 Commercial real estate - owner occupied current period charge-offs — — — — — — — — — Commercial loans Pass 510,269 380,280 279,532 32,637 14,137 56,373 531,611 3,594 1,808,433 Special mention 7,434 26,726 4,180 652 271 100 11,255 1,096 51,714 Substandard 349 10,075 5,506 1,001 148 1,689 4,746 3,126 26,640 Total commercial loans 518,052 417,081 289,218 34,290 14,556 58,162 547,612 7,816 1,886,787 Commercial loans current period charge-offs — (170) (2,777) (115) (226) (627) (119) (28) (4,062) Total Commercial Banking 703,788 697,170 866,908 410,569 360,787 1,231,393 576,059 34,492 4,881,166 Total loans $ 1,227,155 1,475,422 2,103,249 1,533,258 1,048,478 2,720,246 1,115,617 81,133 11,304,558 For the nine months ended September 30, 2024, $13 million of revolving loans were converted to term loans. The following table presents the amortized cost basis of our loan portfolio by year of origination and credit quality indicator for each portfolio segment as of December 31, 2023 (in thousands): 2023 2022 2021 2020 2019 Prior Revolving loans Revolving loans converted to term loans Total loans Personal Banking: Residential mortgage loans Pass $ 186,081 665,379 792,488 506,068 244,678 1,019,152 — — 3,413,846 Substandard — 1,581 — 1,252 311 11,195 — — 14,339 Total residential mortgage loans 186,081 666,960 792,488 507,320 244,989 1,030,347 — — 3,428,185 Residential mortgage current period charge-offs — (9) (5) (130) (23) (1,023) — — (1,189) Home equity loans Pass 71,497 100,639 106,043 146,121 94,144 197,259 463,868 43,526 1,223,097 Substandard — 236 54 197 35 1,733 1,447 1,059 4,761 Total home equity loans 71,497 100,875 106,097 146,318 94,179 198,992 465,315 44,585 1,227,858 Home equity current period charge-offs — (53) (46) — (48) (352) (144) (209) (852) Vehicle loans Pass 664,876 682,275 397,809 132,775 67,853 58,153 — — 2,003,741 Substandard 646 1,418 1,453 299 556 488 — — 4,860 Total vehicle loans 665,522 683,693 399,262 133,074 68,409 58,641 — — 2,008,601 Vehicle current period charge-offs (678) (1,844) (1,967) (475) (652) (853) — — (6,468) Consumer loans Pass 24,277 11,582 5,552 2,072 1,355 6,603 64,214 820 116,475 Substandard 55 43 19 6 6 46 726 50 951 Total consumer loans 24,332 11,625 5,571 2,078 1,361 6,649 64,940 870 117,426 Consumer loan current period charge-offs (3,412) (511) (390) (157) (177) (980) (317) (38) (5,983) Total Personal Banking 947,432 1,463,153 1,303,418 788,790 408,938 1,294,629 530,255 45,455 6,782,070 Commercial Banking: Commercial real estate loans Pass 223,335 470,762 303,873 332,620 228,382 745,244 27,583 24,804 2,356,603 Special Mention 2,819 24,735 27,871 5,365 4,053 38,665 711 — 104,219 Substandard 1,920 750 26,850 18,167 37,044 82,717 79 108 167,635 Total commercial real estate loans 228,074 496,247 358,594 356,152 269,479 866,626 28,373 24,912 2,628,457 Commercial real estate current period (14) — (492) — (51) (1,741) — — (2,298) Commercial real estate loans - Pass 24,725 51,986 47,655 15,984 28,614 140,175 2,378 2,390 313,907 Special Mention 1,221 120 1,218 — 14,386 2,952 — — 19,897 Substandard — — 118 1,666 4,646 4,641 — 678 11,749 Total commercial real estate loans - 25,946 52,106 48,991 17,650 47,646 147,768 2,378 3,068 345,553 Commercial real estate - owner occupied current period charge-offs — — — — — (68) — — (68) Commercial loans Pass 482,605 430,378 73,469 26,868 34,090 54,617 531,742 4,110 1,637,879 Special Mention 508 3,671 52 299 240 26 1,882 — 6,678 Substandard — 3,015 872 356 2,361 840 4,729 1,999 14,172 Total commercial loans 483,113 437,064 74,393 27,523 36,691 55,483 538,353 6,109 1,658,729 Commercial loans current period (35) (2,072) (517) (430) (205) (845) (60) (2) (4,166) Total Commercial Banking 737,133 985,417 481,978 401,325 353,816 1,069,877 569,104 34,089 4,632,739 Total loans $ 1,684,565 2,448,570 1,785,396 1,190,115 762,754 2,364,506 1,099,359 79,544 11,414,809 For the year ended December 31, 2023, $19 million of revolving loans were converted to term loans.

Goodwill and Other Intangible A

Goodwill and Other Intangible Assets	9 Months Ended
	Sep. 30, 2024
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Other Intangible Assets	Goodwill and Other Intangible Assets The following table provides information for intangible assets subject to amortization at the dates indicated (in thousands): September 30, 2024 December 31, 2023 Amortizable intangible assets: Core deposit intangibles - gross $ 74,899 74,899 Less: accumulated amortization (71,536) (69,609) Core deposit intangibles - net $ 3,363 5,290 Total intangible assets - net $ 3,363 5,290 The following table shows the actual aggregate amortization expense for the quarters ended September 30, 2024 and 2023, as well as the estimated aggregate amortization expense, based upon current levels of intangible assets, for the current fiscal year and each of the succeeding fiscal years until the intangible assets are fully amortized (in thousands): For the quarter ended September 30, 2024 $ 590 For the quarter ended September 30, 2023 795 For the nine months ended September 30, 2024 1,926 For the nine months ended September 30, 2023 2,546 For the year ending December 31, 2024 2,452 For the year ending December 31, 2025 1,662 For the year ending December 31, 2026 871 For the year ending December 31, 2027 304 The following table provides information for the changes in the carrying amount of goodwill (in thousands): Total Balance at December 31, 2023 $ 380,997 Balance at September 30, 2024 $ 380,997 We performed our annual goodwill impairment test as of June 30, 2024 in accordance with Accounting Standards Codification ("ASC") 350, Intangibles - Goodwill and Other,

Borrowed Funds

Borrowed Funds	9 Months Ended
	Sep. 30, 2024
Debt Disclosure [Abstract]
Borrowed Funds	Borrowed Funds (a) Borrowings Borrowed funds at September 30, 2024 and December 31, 2023 are presented in the following table (dollars in thousands): September 30, 2024 December 31, 2023 Amount Average rate Amount Average rate Term notes payable to the FHLB of Pittsburgh, due within one year $ 175,000 5.15 % $ 175,000 5.71 % Notes payable to the FHLB of Pittsburgh, due within one year — — % 163,500 5.70 % Collateralized borrowings, due within one year 21,624 1.59 % 35,495 1.72 % Collateral received, due within one year 7,750 5.72 % 24,900 5.26 % Total borrowed funds $ 204,374 $ 398,895 Borrowings from the Federal Home Loan Bank (“FHLB”) of Pittsburgh, if any, are secured by our residential first mortgage and other qualifying loans. At September 30, 2024, the carrying value of these loans was $5.8 billion. Certain of these borrowings are subject to restrictions or penalties in the event of prepayment. The revolving line of credit with the FHLB of Pittsburgh carries a commitment of $250 million. The rate is adjusted daily by the FHLB of Pittsburgh, and any borrowings on this line may be repaid at any time without penalty. At September 30, 2024 there was no balance on the revolving line of credit, and at December 31, 2023 the balance was $164 million. At September 30, 2024 and December 31, 2023, collateralized borrowings due within one year were $22 million and $35 million, respectively. These borrowings are collateralized by cash or va rious securities held in safekeeping by the FHLB. At September 30, 2024, the carrying value of the cash and securities used as collateral was $37 million. At September 30, 2024 and December 31, 2023, collateral received was $8 million and $25 million, respectively. This represents collateral posted to us from our derivative counterparties. At September 30, 2024 and December 31, 2023, term notes payable to the FHLB of Pittsburgh due within one year were $175 million. The September 30, 2024 total is made up of seven advances: $25 million at 5.15% maturing October 28, 2024; $25 million at 5.09% maturing October 31, 2024; $25 million at 5.15% maturing November 8, 2024; $25 million at 5.16% maturing November 12, 2024; $25 million at 5.16% maturing November 12, 2024; $25 million at 5.17% maturing November 19, 2024; $25 million at 5.14% maturing November 29, 2024. On September 9, 2020, the Company issued $125 million of 4.00% fixed-to-floating rate subordinated notes with a maturity date of September 15, 2030. The subordinated notes, which qualify as Tier 2 capital, bear interest at an annual rate of 4.00%, payable semi-annually in arrears commencing on March 15, 2021, and a floating rate of interest equivalent to the 3-month Secured Overnight Financing Rate (“SOFR”) plus 3.89% payable quarterly in arrears commencing on December 15, 2025. During the year ended December 31, 2023 the Company repurchased $10 million of subordinated notes leaving $115 million of subordinated notes outstanding. The subordinated debt issuance costs of approximately $2 million are being amortized over five years on a straight-line basis into interest expense. At September 30, 2024 and December 31, 2023, subordinated debentures, net of issuance costs, were $114 million. For the nine months ended September 30, 2024 and September 30, 2023 total interest expense paid on the subordinate notes was $4 million. (b) Trust Preferred Securities The Company has seven statutory business trusts: Northwest Bancorp Capital Trust III, a Delaware statutory business trust, Northwest Bancorp Statutory Trust IV, a Connecticut statutory business trust, LNB Trust II, a Delaware statutory business trust, Union National Capital Trust I (“UNCT I”), a Delaware statutory business trust, Union National Capital Trust II (“UNCT II”), a Delaware statutory business trust, MFBC Statutory Trust I, a Delaware statutory trust, and Universal Preferred Trust, a Delaware statutory trust (the “Trusts”). The Trusts exist solely to issue preferred securities to third parties for cash, issue common securities to the Company in exchange for capitalization of the Trusts, invest the proceeds from the sale of trust securities in an equivalent amount of debentures of the Company, and engage in other activities that are incidental to those previously listed. The Trusts have invested the proceeds of the offerings in junior subordinated deferrable interest debentures issued by the Company. The structure of these debentures mirrors the structure of the trust-preferred securities. These subordinated debentures are the sole assets of the Trusts. As the shareholders of the trust preferred securities are the primary beneficiaries of the Trusts, the Trusts are not consolidated in our financial statements. The following table sets forth a summary of the cumulative trust preferred securities and the junior subordinated debt held by the Trust as of the date listed (dollars in thousands). Maturity date Interest rate Capital debt securities September 30, 2024 December 31, 2023 Northwest Bancorp Capital Trust III December 30, 2035 3-month SOFR plus 1.38% $ 50,000 51,547 51,547 Northwest Bancorp Statutory Trust IV December 15, 2035 3-month SOFR plus 1.38% 50,000 51,547 51,547 LNB Trust II June 15, 2037 3-month SOFR plus 1.48% 7,875 8,119 8,119 Union National Capital Trust I (1) January 23, 2034 3-month SOFR plus 2.85% 8,000 8,018 7,999 Union National Capital Trust II (1) November 23, 2034 3-month SOFR plus 2.00% 3,000 2,816 2,796 MFBC Statutory Trust I (1) September 15, 2035 3-month SOFR plus 1.70% 5,000 3,865 3,788 Universal Preferred Trust (1) October 7, 2035 3-month SOFR plus 1.69% 5,000 3,857 3,778 $ 128,875 129,769 129,574 (1) Net of discounts due to the fair value adjustment made at the time of acquisition. Cash distributions on the trust securities are made on a quarterly basis to the extent interest on the debentures is received by the Trusts. We have the right to defer payment of interest on the subordinated debentures at any time, or from time-to-time, for periods not exceeding five years. If interest payments on the subordinated debentures are deferred, the distributions on the trust securities also are deferred. To date there have been no interest deferrals. Interest on the subordinated debentures and distributions on the trust securities is cumulative. Our obligation constitutes a full, irrevocable, and unconditional guarantee on a subordinated basis of the obligations of the trust under the preferred securities. For each of the nine month periods ended September 30, 2024 and September 30, 2023 total interest expense paid on trust preferred securities was $7 million. The Trusts must redeem the preferred securities when the debentures are paid at maturity or upon an earlier redemption of the debentures to the extent the debentures are redeemed. All or part of the debentures may be redeemed at any time. Also, the debentures may be redeemed at any time if existing laws or regulations, or the interpretation or application of these laws or regulations, change causing: • the interest on the debentures to no longer be deductible by the Company for federal income tax purposes; • the trusts to become subject to federal income tax or to certain other taxes or governmental charges; • the trusts to register as an investment company; or • the preferred securities to no longer qualify as Tier I capital. We may, at any time, dissolve any of the Trusts and distribute the debentures to the trust security holders, subject to receipt of any required regulatory approvals.

Guarantees

Guarantees	9 Months Ended
	Sep. 30, 2024
Guarantees [Abstract]
Guarantees	Guarantees We issue standby letters of credit in the normal course of business. 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 are contingent upon the failure of the customer to perform according to the terms of the underlying contract with the third party. We are required to perform under a standby letter of credit when drawn upon by the guaranteed third party in the case of nonperformance by our customer. The credit risk associated with standby letters of credit is essentially the same as that involved in extending loans to customers and is subject to normal loan underwriting procedures. Collateral may be obtained based on management’s credit assessment of the customer. At September 30, 2024, the maximum potential amount of future payments we could be required to make under these non-recourse standby letters of credit was $58 million, of which $41 million is fully collateralized. At September 30, 2024, we had a liability which represents deferred income of $1 million related to the standby letters of credit.

Earnings Per Share

Earnings Per Share	9 Months Ended
	Sep. 30, 2024
Earnings Per Share [Abstract]
Earnings Per Share	Earnings Per Share Basic earnings per common share (“EPS”) is computed by dividing net income available to common shareholders by the weighted average number of common shares outstanding for the period, without considering any dilutive items. Diluted EPS is calculated using both the two-class and the treasury stock methods wi th the more dilutive method used to determine diluted EPS. The two-class method was used to determine basic EPS for the three months and nine months ended September 30, 2024 and basic and diluted EPS for the three and nine months ended September 30, 2023, and the treasury stock method was used to determine diluted earnings per share for the three months and nine months ended September 30, 2024. The following table sets forth the computation of basic and diluted EPS (in thousands, except share data and per share amounts): Quarter ended September 30, Nine months ended September 30, 2024 2023 2024 2023 Numerator for earnings per share - Basic and Diluted: Net income - treasury stock method - Basic and Diluted $ 33,618 39,220 67,528 105,943 Less: Dividends and undistributed earnings allocated to participating securities 43 99 86 267 Net income available to common shareholders - two class method - Basic and Diluted $ 33,575 39,121 67,442 105,676 Denominator for earnings per share - treasury stock method - Basic and Diluted Weighted average common shares outstanding - Basic 127,206,579 126,767,507 127,015,478 126,629,786 Add: Potentially dilutive shares 507,932 234,139 553,536 373,605 Denominator for treasury stock method - Diluted 127,714,511 127,001,646 127,569,014 127,003,391 Denominator for earnings per share - two class method - Basic and Diluted: Weighted average common shares outstanding - Basic 127,206,579 126,767,507 127,015,478 126,629,786 Add: Average participating shares outstanding 162,943 320,177 162,943 320,177 Denominator for two class method - Diluted 127,369,522 127,087,684 127,178,421 126,949,963 Basic earnings per share $ 0.26 0.31 0.53 0.83 Diluted earnings per share $ 0.26 0.31 0.53 0.83 Anti-dilutive awards (1) 2,195 2,832 2,369 2,832 (1) Reflects the total number of shares related to outstanding options that have been excluded from the computation of diluted earnings per share because the impact would have been anti-dilutive.

Pension and Other Post-Retireme

Pension and Other Post-Retirement Benefits	9 Months Ended
	Sep. 30, 2024
Retirement Benefits [Abstract]
Pension and Other Post-Retirement Benefits	Pension and Other Post-Retirement Benefits The following table sets forth the net periodic costs for the defined benefit pension plans and post-retirement healthcare plans for the periods indicated (in thousands): Quarter ended September 30, Pension benefits Other post-retirement benefits 2024 2023 2024 2023 Service cost $ 1,425 1,560 — — Interest cost 2,205 2,245 15 7 Expected return on plan assets (3,776) (3,479) — — Amortization of prior service cost (563) (564) — — Amortization of the net loss 18 20 10 10 Net periodic cost $ (691) (218) 25 17 Nine months ended September 30, Pension benefits Other post-retirement benefits 2024 2023 2024 2023 Service cost $ 4,275 4,680 — — Interest cost 6,615 6,735 45 21 Expected return on plan assets (11,328) (10,437) — — Amortization of prior service cost (1,689) (1,692) — — Amortization of the net loss 54 60 30 30 Net periodic cost $ (2,073) (654) 75 51 Because of the current funding status, we do not anticipate a funding requirement during the year ending December 31, 2024.

Disclosures About Fair Value of

Disclosures About Fair Value of Financial Instruments	9 Months Ended
	Sep. 30, 2024
Fair Value Disclosures [Abstract]
Disclosures About Fair Value of Financial Instruments	Disclosures About Fair Value of Financial Instruments We are required to disclose fair value information about financial instruments whether or not recognized in the Consolidated Statement of Financial Condition. Fair value information of certain financial instruments and all nonfinancial instruments is not required to be disclosed. Accordingly, the aggregate fair value amounts presented do not represent the underlying value of the Company. Financial assets and liabilities recognized or disclosed at fair value on a recurring basis and certain financial assets and liabilities on a non-recurring basis are accounted for using a three-level hierarchy of valuation techniques based on whether the inputs to those valuation techniques are observable or unobservable. This hierarchy gives the highest priority to quoted prices with readily available independent data in active markets for identical assets or liabilities (Level 1) and the lowest priority to unobservable market inputs (Level 3). When various inputs for measurement fall within different levels of the fair value hierarchy, the lowest level input that has a significant impact on fair value measurement is used. Financial assets and liabilities are categorized based upon the following characteristics or inputs to the valuation techniques: • Level 1 - Financial assets and liabilities for which inputs are observable and are obtained from reliable quoted prices for identical assets or liabilities in actively traded markets. This is the most reliable fair value measurement and includes, for example, active exchange-traded equity securities. • Level 2 - Financial assets and liabilities for which values are based on quoted prices in markets that are not active or for which values are based on similar assets or liabilities that are actively traded. Level 2 also includes pricing models in which the inputs are corroborated by market data, for example, matrix pricing. • Level 3 - Financial assets and liabilities for which values are based on prices or valuation techniques that require inputs that are both unobservable and significant to the overall fair value measurement. Level 3 inputs include the following: ◦ Quotes from brokers or other external sources that are not considered binding; ◦ Quotes from brokers or other external sources where it cannot be determined that market participants would in fact transact for the asset or liability at the quoted price; and ◦ Quotes and other information from brokers or other external sources where the inputs are not deemed observable. We are responsible for the valuation process and as part of this process may use data from outside sources in establishing fair value. We perform due diligence to understand the inputs used or how the data was calculated or derived. We also corroborate the reasonableness of external inputs in the valuation process. The carrying amounts reported in the Consolidated Statement of Financial Condition approximate fair value for the following financial instruments: cash and cash equivalents, marketable securities available-for-sale, loans held-for-sale, accrued interest receivable, interest rate lock commitments, forward commitments, interest rate swaps, savings and checking deposits, foreign exchange swaps, risk participation agreements, and accrued interest payable. Marketable Securities Where available, market values are based on quoted market prices, dealer quotes, and prices obtained from independent pricing services. Debt Securities — available-for-sale - Generally, debt securities are valued using pricing for similar securities, recently executed transactions and other pricing models utilizing observable inputs. The valuation for most debt securities is classified as Level 2. Securities within Level 2 include corporate bonds, municipal bonds, mortgage-backed securities and U.S. government obligations. Certain debt securities which were AAA rated at purchase do not have an active market, and as such we have used an alternative method to determine the fair value of these securities. The fair value has been determined using a discounted cash flow model using market assumptions, which generally include cash flow, collateral and other market assumptions. As such, securities which otherwise would have been classified as Level 2 securities if an active market for those assets or similar assets existed are included herein as Level 3 assets. Debt Securities — held-to-maturity - The fair value of debt securities held-to-maturity is determined in the same manner as debt securities available-for-sale. Loans Receivable Loans with comparable characteristics including collateral and re-pricing structures are segregated for valuation purposes. Each loan pool is separately valued utilizing a discounted cash flow analysis. Projected monthly cash flows are discounted to present value using a market rate for comparable loans, which is not considered an exit price. Characteristics of comparable loans include remaining term, coupon interest, and estimated prepayment speeds. Delinquent loans are separately evaluated given the impact delinquency has on the projected future cash flow of the loan including the approximate discount or market rate, which is not considered an exit price. Loans Held-for-Sale The estimated fair value of loans held-for-sale is based on market bids obtained from potential buyers. FHLB Stock Due to the restrictions placed on transferability of FHLB stock, it is not practical to determine the fair value. FHLB stock is recorded at cost. Deposit Liabilities The estimated fair value of deposits with no stated maturity, which includes demand deposits, money market, and other savings accounts, is the amount payable on demand. Although market premiums paid for depository institutions reflect an additional value for these low-cost deposits, adjusting fair value for any value expected to be derived from retaining those deposits for a future period of time or from the benefit that results from the ability to fund interest-earning assets with these deposit liabilities is prohibited. The fair value estimates of deposit liabilities do not include the benefit that results from the low-cost funding provided by these deposits compared to the cost of borrowing funds in the market. Fair values for time deposits are estimated using a discounted cash flow calculation that applies contractual cost currently being offered in the existing portfolio to current market rates being offered locally for deposits of similar remaining maturities. The valuation adjustment for the portfolio consists of the present value of the difference of these two cash flows, discounted at the assumed market rate of the corresponding maturity. Borrowed Funds Fixed rate advances are valued by comparing their contractual cost to the prevailing market cost. The carrying amount of repurchase agreements approximates their fair value. Subordinated Debentures The fair value of our subordinated debentures is calculated using the discounted cash flows at rates observable for other similarly traded liabilities. Junior Subordinated Debentures The fair value of junior subordinated debentures is calculated using the discounted cash flows at the prevailing rate of interest. Interest Rate Lock Commitments and Forward Commitments The fair value of interest rate lock commitments is based on the value of underlying loans held-for-sale which is based on quoted prices for similar loans in the secondary market. This value is then adjusted based on the probability of the loan closing (i.e., the “pull-through” amount, a significant unobservable input). The fair value of forward sale commitments is based on quoted prices from the secondary market based on the settlement date of the contracts. Cash Flow Hedges, Interest Rate and Foreign Exchange Swap Agreements and Risk Participation Agreements The fair value of interest rate swaps is based upon the present value of the expected future cash flows using the SOFR discount curve, the basis for the underlying interest rate. To price interest rate swaps, cash flows are first projected for each payment date using the fixed rate for the fixed side of the swap and the forward rates for the floating side of the swap. These swap cash flows are then discounted to time zero using SOFR zero-coupon interest rates. The sum of the present value of both legs is the fair market value of the interest rate swap. These valuations have been derived from our third party vendor’s proprietary models rather than actual market quotations. The proprietary models are based upon financial principles and assumptions that we believe to be reasonable. The fair value of the foreign exchange swap is derived from proprietary models rather than actual market quotations. The proprietary models are based upon financial principles and assumptions that we believe to be reasonable. Risk participation agreements are entered into when Northwest purchases a portion of a commercial loan that has an interest rate swap. Northwest assumes credit risk on its portion of the interest rate swap should the borrower fail to pay as agreed. The value of risk participation agreements is determined based on the value of the swap after considering the credit quality, probability of default, and loss given default of the borrower. Off-Balance Sheet Financial Instruments These financial instruments generally are not sold or traded, and estimated fair values are not readily available. However, the fair value of commitments to extend credit and standby letters of credit is estimated using the fees currently charged to enter into similar agreements. Commitments to extend credit are generally short-term in nature and, if drawn upon, are issued under current market terms. At September 30, 2024 and December 31, 2023, there was no significant unrealized appreciation or depreciation on these financial instruments. The following table sets forth the carrying amount and estimated fair value of our financial instruments included in the Consolidated Statement of Financial Condition at September 30, 2024 (in thousands): Carrying Estimated Level 1 Level 2 Level 3 Financial assets: Cash and cash equivalents $ 226,883 226,883 226,883 — — Securities available-for-sale 1,111,868 1,111,868 — 1,111,868 — Securities held-to-maturity 766,772 672,641 — 672,641 — Loans receivable, net 11,169,375 10,494,023 — — 10,494,023 Loans held-for-sale 9,370 9,370 — — 9,370 Accrued interest receivable 46,678 46,678 46,678 — — Interest rate lock commitments 673 673 — — 673 Forward commitments 115 115 — 115 — Foreign exchange swaps 6 6 — 6 — Interest rate swaps designated as hedging instruments 90 90 — 90 — Interest rate swaps not designated as hedging instruments 31,761 31,761 — 31,761 — FHLB stock 21,223 21,223 — — — Total financial assets $ 13,384,814 12,615,331 273,561 1,816,481 10,504,066 Financial liabilities: Savings and checking deposits $ 9,361,030 9,361,030 9,361,030 — — Time deposits 2,710,049 2,492,832 — — 2,492,832 Borrowed funds 204,374 194,912 194,912 — — Subordinated debt 114,451 107,555 — 107,555 — Junior subordinated debentures 129,769 120,054 — — 120,054 Foreign exchange swaps 173 173 — 173 — Interest rate swaps designated as hedging instruments 2,085 2,085 — 2,085 — Interest rate swaps not designated as hedging instruments 31,924 31,924 — 31,924 — Risk participation agreements 49 49 — 49 — Accrued interest payable 15,125 15,125 15,125 — — Total financial liabilities $ 12,569,029 12,325,739 9,571,067 141,786 2,612,886 The following table sets forth the carrying amount and estimated fair value of our financial instruments included in the Consolidated Statement of Financial Condition at December 31, 2023 (in thousands): Carrying Estimated Level 1 Level 2 Level 3 Financial assets: Cash and cash equivalents $ 122,260 122,260 122,260 — — Securities available-for-sale 1,043,359 1,043,359 — 1,043,359 — Securities held-to-maturity 814,839 699,506 — 699,506 — Loans receivable, net 11,280,798 10,274,593 — — 10,274,593 Loans held-for-sale 8,768 8,768 — — 8,768 Accrued interest receivable 47,353 47,353 47,353 — — Interest rate lock commitments 641 641 — — 641 Forward commitments 12 12 — 12 — Interest rate swaps designated as hedging instruments 713 713 — 713 — Interest rate swaps not designated as hedging instruments 41,406 41,406 — 41,406 — FHLB stock 30,146 30,146 — — — Total financial assets $ 13,390,295 12,268,757 169,613 1,784,996 10,284,002 Financial liabilities: Savings and checking accounts $ 9,377,021 9,377,021 9,377,021 — — Time deposits 2,602,881 2,113,177 — — 2,113,177 Borrowed funds 398,895 386,446 386,446 — — Subordinated debt 114,189 109,471 — 109,471 — Junior subordinated debentures 129,574 112,159 — — 112,159 Foreign exchange swaps 291 291 — 291 — Interest rate swaps designated as hedging instruments 1,198 1,198 — 1,198 — Interest rate swaps not designated as hedging instruments 41,437 41,437 — 41,437 — Risk participation agreements 14 14 — 14 — Accrued interest payable 13,669 13,669 13,669 — — Total financial liabilities $ 12,679,169 12,154,883 9,777,136 152,411 2,225,336 Fair value estimates are made at a point-in-time, based on relevant market data and information about the instrument. The methods and assumptions detailed above were used in estimating the fair value of financial instruments at both September 30, 2024 and December 31, 2023. The following table represents assets and liabilities measured at fair value on a recurring basis at September 30, 2024 (in thousands): Level 1 Level 2 Level 3 Total assets Debt securities: U.S. government and agencies $ — 37,795 — 37,795 Government-sponsored enterprises — 132 — 132 States and political subdivisions — 61,085 — 61,085 Corporate — 24,836 — 24,836 Total debt securities — 123,848 — 123,848 Mortgage-backed securities: GNMA — 55,677 — 55,677 FNMA — 65,222 — 65,222 FHLMC — 95,913 — 95,913 Non-agency — 4 — 4 Collateralized mortgage obligations: GNMA — 558,360 — 558,360 FNMA — 78,304 — 78,304 FHLMC — 134,540 — 134,540 Total mortgage-backed securities — 988,020 — 988,020 Interest rate lock commitments — — 673 673 Forward commitments — 115 — 115 Foreign exchange swaps — 6 — 6 Interest rate swaps designated as hedging instruments — 90 — 90 Interest rate swaps not designated as hedging instruments — 31,761 — 31,761 Total assets $ — 1,143,840 673 1,144,513 Foreign exchange swaps $ — 173 — 173 Interest rate swaps designated as hedging instruments — 2,085 — 2,085 Interest rate swaps not designated as hedging instruments — 31,924 — 31,924 Risk participation agreements — 49 — 49 Total liabilities $ — 34,231 — 34,231 The following table represents assets and liabilities measured at fair value on a recurring basis at December 31, 2023 (in thousands): Level 1 Level 2 Level 3 Total assets Debt securities: U.S. government and agencies $ — 58,314 — 58,314 Government-sponsored enterprises — 40,597 — 40,597 States and political subdivisions — 75,469 — 75,469 Corporate — 7,688 — 7,688 Total debt securities — 182,068 — 182,068 Mortgage-backed securities: GNMA — 17,441 — 17,441 FNMA — 102,678 — 102,678 FHLMC — 70,830 — 70,830 Non-agency — 5 — 5 Collateralized mortgage obligations: GNMA — 331,784 — 331,784 FNMA — 148,892 — 148,892 FHLMC — 189,661 — 189,661 Total mortgage-backed securities — 861,291 — 861,291 Interest rate lock commitments — — 641 641 Forward commitments — 12 — 12 Interest rate swaps designated as hedging instruments — 713 — 713 Interest rate swaps not designated as hedging instruments — 41,406 — 41,406 Total assets $ — 1,085,490 641 1,086,131 Foreign exchange swaps $ — 291 — 291 Interest rate swaps designated as hedging instruments — 1,198 — 1,198 Interest rate swaps not designated as hedging instruments — 41,437 — 41,437 Risk participation agreements — 14 — 14 Total liabilities $ — 42,940 — 42,940 The following table presents the changes in Level 3 assets and liabilities measured at fair value on a recurring basis (in thousands): For the quarter ended September 30, For the nine months ended September 30, 2024 2023 2024 2023 Beginning balance, $ 791 761 641 559 Interest rate lock commitments: Net activity (118) (97) 32 105 Ending balance $ 673 664 673 664 Certain assets and liabilities are measured at fair value on a nonrecurring basis after initial recognition such as loans held-for-sale, loans individually assessed, real estate owned, and mortgage servicing rights. The following table represents the fair market measurement for only those nonrecurring assets that had a fair market value below the carrying amount as of September 30, 2024 (in thousands): Level 1 Level 2 Level 3 Total assets Loans individually assessed $ — — 14,949 14,949 Mortgage servicing rights — — 23 23 Real estate owned, net — — 76 76 Total assets $ — — 15,048 15,048 The following table represents the fair market measurement for only those nonrecurring assets that had a fair market value below the carrying amount as of December 31, 2023 (in thousands): Level 1 Level 2 Level 3 Total assets Loans individually assessed $ — — 36,747 36,747 Mortgage servicing rights — — 133 133 Real estate owned, net — — 104 104 Total assets $ — — 36,984 36,984 Individually Assessed Loans - A loan is considered to be individually assessed as described in Note 1(f) of the Notes to the Consolidated Financial Statements in Item 8 of Part II of our 2023 Annual Report on Form 10-K. We classify loans individually assessed as nonrecurring Level 3. Mortgage servicing rights - Mortgage servicing rights represent the value of servicing residential mortgage loans, when the mortgage loans have been sold into the secondary market and the associated servicing has been retained. The value is determined through a discounted cash flow analysis, which uses interest rates, prepayment speeds and delinquency rate assumptions as inputs. All of these assumptions require a significant degree of management judgment. Servicing rights and the related mortgage loans are segregated into categories or homogeneous pools based upon common characteristics. Adjustments are only made when the estimated discounted future cash flows are less than the carrying value, as determined by individual pool. As such, mortgage servicing rights are classified as nonrecurring Level 3. Real Estate Owned - Real estate owned is comprised of property acquired through foreclosure or voluntarily conveyed by borrowers. These assets are recorded on the date acquired at the lower of the related loan balance or fair value, less estimated disposition costs, with the fair value being determined by appraisal. Subsequently, foreclosed assets are valued at the lower of the amount recorded at acquisition date or fair value, less estimated disposition costs. We classify real estate owned as nonrecurring Level 3. The following table presents additional quantitative information about assets measured at fair value on a recurring and nonrecurring basis and for which we have utilized Level 3 inputs to determine fair value at September 30, 2024 (in thousands): Fair value Valuation techniques Significant Range (weighted average) Loans individually assessed $ 14,949 Appraisal value (1) Estimated cost to sell 10% Mortgage servicing rights 23 Discounted cash flow Annual service cost $88 Prepayment rate 6.5% to 18.7% (11.0%) Expected life (months) 50.3 to 101.9 (70.5) Option adjusted spread 725 basis points Forward yield curve 5.31% to 4.50% Real estate owned, net 76 Appraisal value (1) Estimated cost to sell 10% Loans held for sale 9,370 Quoted prices for similar loans in active markets adjusted by an expected pull-through rate Estimated pull-through rate 100% (1) Fair value is generally determined through independent appraisals of the underlying collateral, which may include Level 3 inputs that are not identifiable, or by using the discounted cash flow method if the loan is not collateral dependent.

Derivative Financial Instrument

Derivative Financial Instruments	9 Months Ended
	Sep. 30, 2024
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Financial Instruments	Derivative Financial Instruments We are a party to derivative financial instruments in the normal course of business to manage our own exposure to fluctuations in interest rates and to meet the needs of our customers. The primary derivatives that we use are interest rate swaps and caps and foreign exchange contracts, which are entered into with counterparties that meet established credit standards. We believe that the credit risk inherent in all of our derivative contracts is minimal based on our credit standards and the netting and collateral provisions of the interest rate swap agreements. Derivatives Designated as Hedging Instruments During the year ended December 31, 2023 the Company entered into seven separate pay-fixed interest rate swaps in order to synthetically convert short-term three month FHLB advances to fixed-rate term funding with an aggregate value of $175 million with maturities ranging from three Derivatives and Hedging . Our cash flow hedges are recorded within other assets on the Consolidated Statement of Financial Condition at their estimated fair value. As long as the hedge remains highly effective, the changes in the fair value of derivatives designated, and that qualify, as cash flow hedges are recorded in accumulated other comprehensive income and are subsequently reclassified into earnings in the period that the hedged forecasted transaction affects earnings. A hedging relationship that is determined to not be highly effective no longer qualifies for hedge accounting and any gain or loss is recognized immediately into earnings. Amount reclassified into earnings are included in interest expense in the Consolidated Statement of Income. Derivatives Not Designated as Hedging Instruments We act as an interest rate or foreign exchange swap counterparty for certain commercial borrowers in the normal course of servicing our customers, which are accounted for at fair value. We manage our exposure to such interest rate or foreign exchange swaps by entering into corresponding and offsetting interest rate swaps with third parties that mirror the terms of the swaps we have with the commercial borrowers. These positions (referred to as “customer swaps”) directly offset each other and our exposure is the fair value of the derivatives due to changes in credit risk of our commercial borrowers and third parties. Customer swaps are recorded within other assets or other liabilities on the Consolidated Statement of Financial Condition at their estimated fair value. Changes to the fair value of assets and liabilities arising from these derivatives are included, net, in other operating income in the Consolidated Statement of Income. We enter into interest rate lock commitments for residential mortgage loans which commit us to lend funds to a potential borrower at a specific interest rate within a specified period of time. Interest rate lock commitments that relate to the origination of mortgage loans that will be held-for-sale are considered derivative financial instruments under applicable accounting guidance. Interest rate lock commitments on loans held-for-sale are carried at fair value in other assets on the Consolidated Statement of Financial Condition. Northwest sells loans to the secondary market on a mandatory or best efforts basis. The loans sold on a mandatory basis commit us to deliver a specific principal amount of mortgage loans to an investor at a specified price, by a specified date, or the commitment must be paired off. These forward commitments entered into on a mandatory delivery basis meet the definition of a derivative financial instrument. All closed loans to be sold on a mandatory delivery basis are classified as held-for-sale on the Consolidated Statement of Financial Condition. Changes to the fair value of the interest rate lock commitments and the forward commitments are recorded in mortgage banking income in the Consolidated Statements of Income. We enter into risk participation agreements with financial institution counterparties for interest rate swaps related to loans in which we are a participant. The risk participation agreements provide credit protection to the financial institution should the borrower fail to perform on its interest rate derivative contract with the financial institution. These risk participation agreements are recorded within other liabilities on the Consolidated Statement of Financial Condition at their estimated fair value. Changes to the fair value of the the risk participation agreements are included in other operating income in the Consolidated Statement of Income. The following table presents information regarding our derivative financial instruments at the dates indicated (in thousands): Asset derivatives Liability derivatives Notional amount Fair value Notional amount Fair value At September 30, 2024 Derivatives designated as hedging instruments: Interest rate swap agreements $ 50,000 90 125,000 2,085 Derivatives not designated as hedging instruments: Interest rate swap agreements 748,903 31,761 748,903 31,924 Foreign exchange swap agreements 2,987 6 119 173 Interest rate lock commitments 27,536 673 — — Forward commitments 4,514 115 — — Risk participation agreements — — 137,126 49 Total Derivatives $ 833,940 32,645 1,011,148 34,231 At December 31, 2023 Derivatives designated as hedging instruments: Interest rate swap agreements $ 75,000 713 100,000 1,198 Derivatives not designated as hedging instruments: Interest rate swap agreements 725,139 41,406 725,139 41,437 Foreign exchange swap agreements — — 12,278 291 Interest rate lock commitments 21,857 641 — — Forward commitments 281 12 — — Risk participation agreements — — 101,727 14 Total derivatives $ 822,277 42,772 939,144 42,940 The following table presents income or expense recognized on derivatives for the periods indicated (in thousands): For the quarter ended September 30, For the nine months ended September 30, 2024 2023 2024 2023 Hedging derivatives: Decrease in interest expense $ 732 627 2,198 831 Non-hedging swap derivatives: (Decrease)/increase in other income (221) 203 (45) (127) (Decrease)/increase in mortgage banking income (73) (221) 135 (46) The following table presents information regarding our derivative financial instruments designated as hedging for the quarter ended September 30, 2024 (dollars in thousands): Notional amount Effective rate Estimated decrease to interest expense in the next twelve months Maturity date Remaining term Interest rate products: Issued May 11, 2023 $ 25,000 3.51 % $ (462) 5/11/2027 31 Issued May 12, 2023 25,000 3.56 % (450) 5/12/2028 43 Issued May 19, 2023 25,000 3.86 % (377) 11/19/2027 38 Issued May 31, 2023 25,000 4.04 % (326) 11/30/2026 26 Issued July 26, 2023 25,000 4.24 % (271) 7/26/2028 46 Issued July 31, 2023 25,000 4.27 % (249) 1/31/2028 40 Issued August 9, 2023 25,000 4.31 % (254) 8/9/2027 34 Total $ 175,000 $ (2,389)

Legal Proceedings

Legal Proceedings	9 Months Ended
	Sep. 30, 2024
Commitments and Contingencies Disclosure [Abstract]
Legal Proceedings	Legal Proceedings We establish accruals for legal proceedings when information related to the loss contingencies represented by those matters indicates both that a loss is probable and that the amount of loss can be reasonably estimated. As of September 30, 2024, we do not anticipate that the aggregate ultimate liability arising out of any pending or threatened legal proceedings will be material to our Consolidated Financial Statements. Any such accruals are adjusted thereafter as appropriate to reflect changes in circumstances. Due to the inherent subjectivity of assessments and unpredictability of outcomes of legal proceedings, any amounts accrued may not represent the ultimate loss to us from legal proceedings.

Changes in Accumulated Other Co

Changes in Accumulated Other Comprehensive Income	9 Months Ended
	Sep. 30, 2024
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Changes in Accumulated Other Comprehensive Income	Changes in Accumulated Other Comprehensive Income The following tables show the changes in accumulated other comprehensive income by component for the periods indicated (in thousands): For the quarter ended September 30, 2024 Unrealized Change in Change in Total Balance as of June 30, 2024 $ (132,959) 2,110 765 (130,084) Other comprehensive/(loss) income before reclassification adjustments (1) (3) 27,947 (3,654) — 24,293 Amounts reclassified from accumulated other comprehensive income (2) (4) — — (387) (387) Net other comprehensive income/(loss) 27,947 (3,654) (387) 23,906 Balance as of September 30, 2024 $ (105,012) (1,544) 378 (106,178) For the quarter ended September 30, 2023 Unrealized Change in Change in Total Balance as of June 30, 2023 $ (163,272) 1,737 (7,716) (169,251) Other comprehensive (loss)/income before reclassification adjustments (5) (7) (29,715) 1,825 — (27,890) Amounts reclassified from accumulated other comprehensive income (6) (8) — — (382) (382) Net other comprehensive income/(loss) (29,715) 1,825 (382) (28,272) Balance as of September 30, 2023 $ (192,987) 3,562 (8,098) (197,523) (1) Consists of unrealized holding gains, net of tax of ($8,980) . (2) Consists of realized losses, net of tax of $0 . (3) Change in fair value of interest rate swaps, net of tax $1,068 . (4) Consists of realized gains, net of tax of $148 . (5) Consists of unrealized holding losses, net of tax of $9,140 . (6) Consists of realized losses, net of tax of $0 . (7) Change in fair value of interest rate swaps, net of tax ($533) . (8) Consists of realized gains, net of tax of $152 . For the nine months ended September 30, 2024 Unrealized Change in Change in Total Balance as of December 31, 2023 $ (150,659) (374) 1,541 (149,492) Other comprehensive income/(loss) before reclassification adjustments (1) (3) 18,858 (1,170) — 17,688 Amounts reclassified from accumulated other comprehensive income (2) (4) 26,789 — (1,163) 25,626 Net other comprehensive income/(loss) 45,647 (1,170) (1,163) 43,314 Balance as of September 30, 2024 $ (105,012) (1,544) 378 (106,178) For the nine months ended September 30, 2023 Unrealized Change in Change in Total Balance as of December 31, 2022 $ (164,206) — (6,952) (171,158) Other comprehensive loss before reclassification adjustments (5) (7) (34,417) 3,562 — (30,855) Amounts reclassified from accumulated other comprehensive income (6) (8) 5,636 — (1,146) 4,490 Net other comprehensive loss (28,781) 3,562 (1,146) (26,365) Balance as of September 30, 2023 $ (192,987) 3,562 (8,098) (197,523) (1) Consists of unrealized holding gains, net of tax of ($7,054) . (2) Consists of realized losses, net of tax of ($7,706) . (3) Change in fair value of interest rate swaps, net of tax $342 . (4) Consists of realized gains, net of tax of $442 . (5) Consists of unrealized holding losses, net of tax $9,603 . (6) Consists of realized losses, net of tax ($1,731) . (7) Change in fair value of interest rate swaps, net of tax ($1,041) . (8) Consists of realized gains, net of tax of $456 .

Pay vs Performance Disclosure

Pay vs Performance Disclosure - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Pay vs Performance Disclosure
Net Income (loss)	$ 33,618	$ 39,220	$ 67,528	$ 105,943

Insider Trading Arrangements

Insider Trading Arrangements	3 Months Ended
	Sep. 30, 2024
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

Basis of Presentation and Inf_2

Basis of Presentation and Informational Disclosures (Policies)	9 Months Ended
	Sep. 30, 2024
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	Northwest Bancshares, Inc. (the “Company” or “NWBI”), a Maryland corporation headquartered in Columbus, Ohio, is a bank holding company regulated by the Board of Governors of the Federal Reserve System (“FRB”). The primary activity of the Company is the ownership of all of the issued and outstanding common stock of Northwest Bank, a Pennsylvania-chartered savings bank (“Northwest”). Northwest is regulated by the Federal Deposit Insurance Corporation (“FDIC”) and the Pennsylvania Department of Banking. Northwest operates 141 community-banking offices throughout Pennsylvania, Western New York, Eastern Ohio, and Indiana. The accompanying unaudited Consolidated Financial Statements include the accounts of the Company and its subsidiary, Northwest, and Northwest’s subsidiaries Northwest Capital Group, Inc., Great Northwest Corporation, and Mutual Federal Interest Company, Inc. The unaudited Consolidated Financial Statements have been prepared in accordance with United States generally accepted accounting principles for interim financial information and with the instructions for Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the information or footnotes required for complete annual financial statements. In the opinion of management, all adjustments necessary for the fair presentation of the Company’s financial position and results of operations have been included. The Consolidated Financial Statements have been prepared using the accounting policies described in the financial statements included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2023 updated, as required, for any new pronouncements or changes.
Reclassifications	Certain items previously reported have been reclassified to conform to the current year’s reporting format.
Recently Adopted Accounting Standards	Recently Adopted Accounting Standards In March 2023, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") No. 2023-02, " Investments—Equity Method and Joint Ventures (Topic 323): Accounting for Investments in Tax Credit Structures Using the Proportional Amortization Method

Marketable Securities (Tables)

Marketable Securities (Tables)	9 Months Ended
	Sep. 30, 2024
Investments, Debt and Equity Securities [Abstract]
Schedule of the portfolio of investment securities available-for-sale	The following table shows the portfolio of marketable securities available-for-sale at September 30, 2024 (in thousands): Amortized Gross Gross Fair Debt issued by the U.S government and agencies: Due after ten years $ 46,292 — (8,497) 37,795 Debt issued by government-sponsored enterprises: Due after one year through five years 136 — (4) 132 Municipal securities: Due after one year through five years 884 18 (2) 900 Due after five years through ten years 15,729 277 (1,382) 14,624 Due after ten years 52,244 288 (6,971) 45,561 Corporate debt issues: Due after five years through ten years 25,396 307 (867) 24,836 Mortgage-backed securities: Fixed rate pass-through 222,573 2,926 (12,641) 212,858 Variable rate pass-through 3,905 57 (4) 3,958 Fixed rate agency CMOs 835,445 3,801 (113,373) 725,873 Variable rate agency CMOs 45,500 44 (213) 45,331 Total mortgage-backed securities 1,107,423 6,828 (126,231) 988,020 Total marketable securities available-for-sale $ 1,248,104 7,718 (143,954) 1,111,868 The following table shows the portfolio of marketable securities available-for-sale at December 31, 2023 (in thousands): Amortized Gross Gross Fair Debt issued by the U.S. government and agencies: Due after one year through five years $ 20,000 — (1,135) 18,865 Due after ten years 49,383 — (9,934) 39,449 Debt issued by government-sponsored enterprises: Due after one year through five years 45,986 — (5,763) 40,223 Due after five years through ten years 386 — (12) 374 Municipal securities: Due after one year through five years 4,279 22 (427) 3,874 Due after five years through ten years 20,725 — (1,437) 19,288 Due after ten years 60,762 125 (8,580) 52,307 Corporate debt issues: Due after five years through ten years 8,466 — (778) 7,688 Mortgage-backed securities: Fixed rate pass-through 209,069 27 (25,222) 183,874 Variable rate pass-through 7,140 11 (71) 7,080 Fixed rate agency CMOs 789,842 — (143,055) 646,787 Variable rate agency CMOs 23,965 38 (453) 23,550 Total mortgage-backed securities 1,030,016 76 (168,801) 861,291 Total marketable securities available-for-sale $ 1,240,003 223 (196,867) 1,043,359
Schedule of the portfolio of investment securities held-to-maturity	The following table shows the portfolio of marketable securities held-to-maturity at September 30, 2024 (in thousands): Amortized Gross Gross Fair Debt issued by government-sponsored enterprises: Due after one year through five years $ 109,460 — (10,520) 98,940 Due after five years through ten years 15,000 — (1,923) 13,077 Mortgage-backed securities: Fixed rate pass-through 136,439 — (16,184) 120,255 Variable rate pass-through 387 — — 387 Fixed rate agency CMOs 504,957 — (65,502) 439,455 Variable rate agency CMOs 529 — (2) 527 Total mortgage-backed securities 642,312 — (81,688) 560,624 Total marketable securities held-to-maturity $ 766,772 — (94,131) 672,641 The following table shows the portfolio of marketable securities held-to-maturity at December 31, 2023 (in thousands): Amortized Gross Gross Fair Debt issued by government-sponsored enterprises: Due after one year through five years $ 69,471 — (8,100) 61,371 Due after five years through ten years 54,987 — (8,700) 46,287 Mortgage-backed securities: Fixed rate pass-through 147,874 — (20,834) 127,040 Variable rate pass-through 449 1 — 450 Fixed rate agency CMOs 541,529 — (77,694) 463,835 Variable rate agency CMOs 529 — (6) 523 Total mortgage-backed securities 690,381 1 (98,534) 591,848 Total marketable securities held-to-maturity $ 814,839 1 (115,334) 699,506
Schedule of contractual maturity of mortgage-backed securities	The following table shows the contractual maturity of our mortgage-backed securities available-for-sale at September 30, 2024 (in thousands): Amortized Fair Mortgage-backed securities: Due within one year $ 42 43 Due after one year through five years 10,889 10,807 Due after five years through ten years 8,723 7,928 Due after ten years 1,087,769 969,242 Total mortgage-backed securities $ 1,107,423 988,020 The following table shows the contractual maturity of our mortgage-backed securities held-to-maturity at September 30, 2024 (in thousands): Amortized Fair Mortgage-backed securities: Due within one year $ 64 62 Due after one year through five years 19,983 18,219 Due after five years through ten years 20,192 17,088 Due after ten years 602,073 525,255 Total mortgage-backed securities $ 642,312 560,624
Schedule of the fair value and gross unrealized losses on investment securities, aggregated by investment category and length of time individual securities have been in a continuous unrealized loss position	The following table shows the fair value of and gross unrealized losses on available-for-sale investment securities and held to maturity investment securities, for which an allowance for credit losses has not been recorded, aggregated by investment category and length of time that the individual securities have been in a continuous unrealized loss position at September 30, 2024 (in thousands): Less than 12 months 12 months or more Total Fair Unrealized Fair Unrealized Fair Unrealized U.S. government-sponsored enterprises $ — — 149,944 (20,944) 149,944 (20,944) Municipal securities — — 41,002 (8,355) 41,002 (8,355) Corporate issues 2,677 (92) 7,694 (775) 10,371 (867) Mortgage-backed securities - agency 50,187 (174) 1,183,798 (207,745) 1,233,985 (207,919) Total $ 52,864 (266) 1,382,438 (237,819) 1,435,302 (238,085) The following table shows the fair value of and gross unrealized losses on available-for-sale investment securities and held to maturity investment securities, for which an allowance for credit losses has not been recorded, aggregated by investment category and length of time that the individual securities have been in a continuous unrealized loss position at December 31, 2023 (in thousands): Less than 12 months 12 months or more Total Fair Unrealized Fair Unrealized Fair Unrealized U.S. government-sponsored enterprises $ — — 206,569 (33,644) 206,569 (33,644) Corporate debt issues — — 7,688 (778) 7,688 (778) Municipal securities 2,753 (81) 66,046 (10,363) 68,799 (10,444) Mortgage-backed securities - agency 17,976 (242) 1,423,707 (267,093) 1,441,683 (267,335) Total $ 20,729 (323) 1,704,010 (311,878) 1,724,739 (312,201)
Schedule of credit quality of held-to-maturity securities	The following table presents the credit quality of our held-to-maturity securities, based on the latest information available as of September 30, 2024 (in thousands). The credit ratings are sourced from nationally recognized rating agencies, which include Moody’s and S&P, and they are presented based on asset type. All of our held-to-maturity securities were current in their payment of principal and interest as of September 30, 2024. AA+ Total Held-to-maturity securities (at amortized cost): Debt issued by the U.S. government-sponsored enterprises $ 124,460 124,460 Mortgage-backed securities 642,312 642,312 Total marketable securities held-to-maturity $ 766,772 766,772

Loans Receivable (Tables)

Loans Receivable (Tables)	9 Months Ended
	Sep. 30, 2024
Receivables [Abstract]
Schedule of loans receivable	The following table shows a summary of our loans receivable at amortized cost basis at September 30, 2024 and December 31, 2023 (in thousands): September 30, 2024 December 31, 2023 Originated (1) Acquired (2) Total Originated (1) Acquired (2) Total Personal Banking: Residential mortgage loans (3) $ 3,128,027 130,131 3,258,158 3,283,299 144,886 3,428,185 Home equity loans 1,063,095 104,107 1,167,202 1,103,410 124,448 1,227,858 Vehicle loans 1,824,554 50,393 1,874,947 1,943,540 65,061 2,008,601 Consumer loans 95,406 27,679 123,085 111,446 5,980 117,426 Total Personal Banking 6,111,082 312,310 6,423,392 6,441,695 340,375 6,782,070 Commercial Banking: Commercial real estate loans (4) 2,422,509 210,672 2,633,181 2,389,537 238,920 2,628,457 Commercial real estate loans - owner occupied 337,561 23,637 361,198 319,195 26,358 345,553 Commercial loans 1,881,643 5,144 1,886,787 1,623,481 35,248 1,658,729 Total Commercial Banking 4,641,713 239,453 4,881,166 4,332,213 300,526 4,632,739 Total loans receivable, gross 10,752,795 551,763 11,304,558 10,773,908 640,901 11,414,809 Allowance for credit losses (120,883) (4,930) (125,813) (118,079) (7,164) (125,243) Total loans receivable, net (5) $ 10,631,912 546,833 11,178,745 10,655,829 633,737 11,289,566 (1) Includes originated and loan pools purchased in an asset acquisition. (2) Includes loans subject to purchase accounting in a business combination. (3) Includ es $9 million of l oans held-for-sale at September 30, 2024 and December 31, 2023. (4) Includes $0 of loans held-for-sale at September 30, 2024 and December 31, 2023. (5) Includes $60 million and $68 million
Schedule of the changes in the allowance for losses on loans receivable	The following table provides information related to the allowance for credit losses by portfolio segment and by class of financing receivable for the quarter ended September 30, 2024 (in thousands): Balance as of September 30, 2024 Current period provision Charge-offs Recoveries Balance as of June 30, 2024 Allowance for Credit Losses Personal Banking: Residential mortgage loans $ 13,553 (1,444) (255) 253 14,999 Home equity loans 4,704 187 (890) 197 5,210 Vehicle loans 22,162 2,371 (2,064) 491 21,364 Consumer loans 1,869 1,327 (1,496) 370 1,668 Total Personal Banking 42,288 2,441 (4,705) 1,311 43,241 Commercial Banking: Commercial real estate loans 48,613 (1,577) (475) 106 50,559 Commercial real estate loans - owner occupied 3,849 223 — 11 3,615 Commercial loans 31,063 4,640 (1,580) 348 27,655 Total Commercial Banking 83,525 3,286 (2,055) 465 81,829 Total $ 125,813 5,727 (6,760) 1,776 125,070 Allowance for Credit Losses - off-balance sheet exposure Personal Banking: Residential mortgage loans $ — (1) — — 1 Home equity loans 59 (4) — — 63 Total Personal Banking 59 (5) — — 64 Commercial Banking: Commercial real estate loans 3,407 (1,043) — — 4,450 Commercial real estate loans - owner occupied 159 8 — — 151 Commercial loans 9,308 188 — — 9,120 Total Commercial Banking 12,874 (847) — — 13,721 Total off-balance sheet exposure $ 12,933 (852) — — 13,785 The following table provides information related to the allowance for credit losses by portfolio segment and by class of financing receivable for the quarter ended September 30, 2023 (in thousands): Balance as of September 30, 2023 Current period provision Charge-offs Recoveries Balance as of June 30, 2023 Allowance for Credit Losses Personal Banking: Residential mortgage loans $ 17,090 (370) (171) 75 17,556 Home equity loans 5,044 201 (320) 161 5,002 Vehicle loans 27,226 984 (1,524) 483 27,283 Consumer loans 1,202 1,436 (1,561) 317 1,010 Total Personal Banking 50,562 2,251 (3,576) 1,036 50,851 Commercial Banking: Commercial real estate loans 48,582 (1,110) (484) 120 50,056 Commercial real estate loans - owner occupied 3,479 (30) — 11 3,498 Commercial loans 22,218 2,872 (1,286) 614 20,018 Total Commercial Banking 74,279 1,732 (1,770) 745 73,572 Total $ 124,841 3,983 (5,346) 1,781 124,423 Allowance for Credit Losses - off-balance sheet exposure Personal Banking: Residential mortgage loans $ 3 (1) — — 4 Home equity loans 67 3 — — 64 Total Personal Banking 70 2 — — 68 Commercial Banking: Commercial real estate loans 4,797 (2,858) — — 7,655 Commercial real estate loans - owner occupied 140 (180) — — 320 Commercial loans 7,971 55 — — 7,916 Total Commercial Banking 12,908 (2,983) — — 15,891 Total off-balance sheet exposure $ 12,978 (2,981) — — 15,959 The following table provides information related to the allowance for credit losses by portfolio segment and by class of financing receivable for the nine months ended September 30, 2024 (in thousands): Balance Current period provision Charge-offs Recoveries Balance December 31, 2023 Allowance for Credit Losses Personal Banking: Residential mortgage loans $ 13,553 (5,218) (669) 1,247 18,193 Home equity loans 4,704 53 (1,539) 787 5,403 Vehicle loans 22,162 444 (6,578) 1,385 26,911 Consumer loans 1,869 3,610 (4,116) 1,176 1,199 Total Personal Banking 42,288 (1,111) (12,902) 4,595 51,706 Commercial Banking: Commercial real estate loans 48,613 (2,289) (1,324) 959 51,267 Commercial real estate loans - owner occupied 3,849 42 — 32 3,775 Commercial loans 31,063 15,488 (4,062) 1,142 18,495 Total Commercial Banking 83,525 13,241 (5,386) 2,133 73,537 Total $ 125,813 12,130 (18,288) 6,728 125,243 Allowance for Credit Losses - off-balance sheet exposure Personal Banking: Residential mortgage loans $ — (2) — — 2 Home equity loans 59 (6) — — 65 Total Personal Banking 59 (8) — — 67 Commercial Banking: Commercial real estate loans 3,407 (2,740) — — 6,147 Commercial real estate loans - owner occupied 159 (14) — — 173 Commercial loans 9,308 (1,428) — — 10,736 Total Commercial Banking 12,874 (4,182) — — 17,056 Total off-balance sheet exposure $ 12,933 (4,190) — — 17,123 The following table provides information related to the allowance for credit losses by portfolio segment and by class of financing receivable for the nine months ended September 30, 2023 (in thousands): Balance Current period provision Charge-offs Recoveries ASU 2022-02 Adoption Balance December 31, 2022 Allowance for Credit Losses Personal Banking: Residential mortgage loans $ 17,090 (2,047) (923) 799 — 19,261 Home equity loans 5,044 (705) (719) 566 — 5,902 Vehicle loans 27,226 7,267 (4,731) 1,631 — 23,059 Consumer loans 1,202 3,463 (3,860) 934 — 665 Total Personal Banking 50,562 7,978 (10,233) 3,930 — 48,887 Commercial Banking: Commercial real estate loans 48,582 3,587 (1,556) 1,619 426 44,506 Commercial real estate loans - owner occupied 3,479 (515) (68) 58 — 4,004 Commercial loans 22,218 3,813 (3,360) 1,126 — 20,639 Total Commercial Banking 74,279 6,885 (4,984) 2,803 426 69,149 Total $124,841 14,863 (15,217) 6,733 426 118,036 Allowance for Credit Losses - off-balance sheet exposure Personal Banking: Residential mortgage loans 3 (1) — — — 4 Home equity loans 67 (7) — — — 74 Total Personal Banking 70 (8) — — — 78 Commercial Banking: Commercial real estate loans 4,797 (578) — — — 5,375 Commercial real estate loans - owner occupied 140 (239) — — — 379 Commercial loans 7,971 890 — — — 7,081 Total Commercial Banking 12,908 73 — — — 12,835 Total off-balance sheet exposure $ 12,978 65 — — — 12,913
Schedule of loan portfolio by portfolio segment and by class of financing receivable	The following table provides information related to the loan portfolio by portfolio segment and by class of financing receivable at September 30, 2024 (in thousands): Total loans Allowance for Nonaccrual Loans 90 days past due and accruing Personal Banking: Residential mortgage loans $ 3,258,158 13,553 7,541 — Home equity loans 1,167,202 4,704 4,041 — Vehicle loans 1,874,947 22,162 5,009 — Consumer loans 123,085 1,869 196 717 Total Personal Banking 6,423,392 42,288 16,787 717 Commercial Banking: Commercial real estate loans 2,633,181 48,613 42,612 — Commercial real estate loans - owner occupied 361,198 3,849 859 — Commercial loans 1,886,787 31,063 16,570 328 Total Commercial Banking 4,881,166 83,525 60,041 328 Total $ 11,304,558 125,813 76,828 1,045 The following table provides information related to the loan portfolio by portfolio segment and by class of financing receivable at December 31, 2023 (in thousands): Total loans Allowance for Nonaccrual Loans 90 days past due and accruing Personal Banking: Residential mortgage loans $ 3,428,185 18,193 8,727 1,671 Home equity loans 1,227,858 5,403 4,492 26 Vehicle loans 2,008,601 26,911 4,816 44 Consumer loans 117,426 1,199 229 722 Total Personal Banking 6,782,070 51,706 18,264 2,463 Commercial Banking: Commercial real estate loans 2,628,457 51,267 71,297 225 Commercial real estate loans - owner occupied 345,553 3,775 676 — Commercial loans 1,658,729 18,495 4,147 10 Total Commercial Banking 4,632,739 73,537 76,120 235 Total $ 11,414,809 125,243 94,384 2,698
Schedule of the composition of nonaccrual loans by portfolio segment and by class of financing receivable	The following table presents the amortized cost of our loans on nonaccrual status as of the beginning and end of the period ended September 30, 2024 (in thousands): September 30, 2024 Nonaccrual loans at January 1, 2024 Nonaccrual loans with an allowance Nonaccrual loans with no allowance Total nonaccrual loans at the end of the period Loans 90 days past due and accruing Personal Banking: Residential mortgage loans $ 8,727 6,707 834 7,541 — Home equity loans 4,492 3,900 141 4,041 — Vehicle loans 4,816 4,024 985 5,009 — Consumer loans 229 196 — 196 717 Total Personal Banking 18,264 14,827 1,960 16,787 717 Commercial Banking: Commercial real estate loans 71,297 22,695 19,917 42,612 — Commercial real estate loans - owner occupied 676 859 — 859 — Commercial loans 4,147 16,408 162 16,570 328 Total Commercial Banking 76,120 39,962 20,079 60,041 328 Total $ 94,384 54,789 22,039 76,828 1,045 The following table presents the amortized cost of our loans on nonaccrual status as of the beginning and end of the year ended December 31, 2023 (in thousands): December 31, 2023 Nonaccrual loans at January 1, 2023 Nonaccrual loans with an allowance Nonaccrual loans with no allowance Total nonaccrual loans at the end of the period Loans 90 days past due and accruing Personal Banking: Residential mortgage loans $ 7,574 8,304 423 8,727 1,671 Home equity loans 4,145 4,084 408 4,492 26 Vehicle loans 3,771 4,187 629 4,816 44 Consumer loans 256 229 — 229 722 Total Personal Banking 15,746 16,804 1,460 18,264 2,463 Commercial Banking: Commercial real estate loans 62,239 47,359 23,938 71,297 225 Commercial real estate loans - owner occupied 624 676 — 676 — Commercial loans 2,627 3,996 151 4,147 10 Total Commercial Banking 65,490 52,031 24,089 76,120 235 Total $ 81,236 68,835 25,549 94,384 2,698 Real estate Equipment Other Total Commercial Banking: Commercial real estate loans $ 36,268 — — 36,268 Commercial loans 3,014 5,061 2,583 10,658 Total Commercial Banking 39,282 5,061 2,583 46,926 Total $ 39,282 5,061 2,583 46,926 The following table presents the amortized cost basis of collateral-dependent loans by class of loans as of December 31, 2023 (in thousands): Real estate Total Commercial Banking: Commercial real estate loans $ 66,934 66,934 Commercial loans 150 150 Total Commercial Banking 67,084 67,084 Total $ 67,084 67,084
Schedule of troubled debt restructurings (including re-modified TDRs) by portfolio segment and by class of financing receivable	The following table presents the amortized cost basis of loans for the periods indicated that were both experiencing financial difficulty and modified during the respective period, by class and by type of modification. The percentage of the amortized cost basis of loans that were modified to borrowers in financial distress as compared to the amortized cost basis of each class of financial receivable is also presented below (dollars in thousands). For the quarter ended September 30, 2024 2023 Payment delay Term extension Combination term extension and interest rate reduction Total class of financing receivable Term extension Combination term extension and interest rate reduction Total class of financing receivable Personal Banking: Residential mortgage loans $ — $ 494 — 0.02 % 192 — 0.01 % Home equity loans — 29 — 0.00 % 122 85 0.02 % Consumer loans — — 11 0.01 % — — — % Total Personal Banking — 523 11 0.01 % 314 85 0.01 % Commercial Banking: Commercial real estate loans 1,357 — — 0.05 % — — — % Commercial loans — 35 — — % 15 — — % Total Commercial Banking 1,357 35 — 0.03 % 15 — — % Total $ 1,357 $ 558 11 0.02 % 329 85 0.00 % For the nine months ended September 30, 2024 2023 Payment delay Term extension Interest rate reduction Combination term extension and interest rate reduction Total class of financing receivable Term extension Combination term extension and interest rate reduction Total class of financing receivable Personal Banking: Residential mortgage loans $ — 979 — — 0.03 % 450 — 0.01 % Home equity loans — 551 — 84 0.05 % 283 85 0.03 % Consumer loans — — — 13 0.01 % — 3 — % Total Personal Banking — 1,530 — 97 0.03 % 733 88 0.01 % Commercial Banking: Commercial real estate loans 1,628 202 — — 0.07 % 197 — 0.01 % Commercial real estate loans - owner occupied — — 680 — 0.19 % — — — % Commercial loans — 35 — 8 — % 663 — 0.04 % Total Commercial Banking 1,628 237 680 8 0.05 % 860 — 0.02 % Total $ 1,628 1,767 680 105 0.04 % 1,593 88 0.01 % The following table presents the effect of the loan modifications presented above to borrowers experiencing financial difficulty for the periods indicated: For the quarter ended September 30, 2024 2023 Weighted-average interest rate reduction Weighted-average term extension in months Weighted-average payment deferral in years Weighted-average interest rate reduction Weighted-average term extension in months Personal Banking: Residential mortgage loans — % 156 0 — % 169 Home equity loans — % 105 0 5 % 112 Consumer loans 5 % 10 0 12 % 0 Total Personal Banking 5 % 151 0 17 % 140 Commercial Banking: Commercial real estate loans — % 0 0.3 — % 0 Commercial loans — % 6 0 — % 23 Total Commercial Banking — % 6 0.3 — % 23 Total loans 5 % 142 0.3 17 % 135 For the nine months ended September 30, 2024 2023 Weighted-average interest rate reduction Weighted-average term extension in months Weighted-average payment deferral in years Weighted-average interest rate reduction Weighted-average term extension in months Personal Banking: Residential mortgage loans — % 151 0 — 149 Home equity loans 2 % 99 0 5 % 96 Consumer loans 6 % 66 0 12 % 356 Total Personal Banking 3 % 130 0 17 % 126 Commercial Banking: Commercial real estate loans — % 117 0.5 — 25 Commercial real estate loans - owner occupied 2 % 0 0 — 0 Commercial loans 4 % 32 0 — 9 Total Commercial Banking 2 % 102 0.5 — 13 Total loans 2 % 126 0.5 17 % 68 September 30, 2024 (in thousands) : Current 30-59 days 60-89 days 90 days or Personal Banking: Residential mortgage loans $ 976 — — 3 Home equity loans 525 13 9 88 Consumer loans 13 — — — Total Personal Banking 1,514 13 9 91 Commercial Banking: Commercial real estate loans 1,830 — — — Commercial real estate loans - owner occupied 680 — — — Commercial loans 43 — — — Total Commercial Banking 2,553 — — — Total loans $ 4,067 13 9 91 The following table presents the performance of loans modified since the adoption of ASU 2022-02 as of September 30, 2023 (in thousands) : Current 30-59 days 60-89 days 90 days or Personal Banking: Residential mortgage loans $ 450 — — — Home equity loans 368 — — — Consumer loans 3 — — — Total Personal Banking 821 — — — Commercial Banking: Commercial real estate loans 74 — — 123 Commercial loans — 15 — 648 Total Commercial Banking 74 15 — 771 Total loans $ 895 15 — 771
Schedule of loans with payment default and modified	The following table provides the amortized cost basis of financing receivables that had a payment default during the period ended September 30, 2024 and were modified within the previous twelve months to borrowers experiencing financial difficulty (in thousands) : Term extension Personal Banking: Residential mortgage loans $ 3 Home equity loans 88 Total Personal Banking 91 Total $ 91 The following table provides the amortized cost basis of financing receivables that had a payment default during the period ended September 30, 2023 and were modified since the adoption of ASU 2022-02 to borrowers experiencing financial difficulty (in thousands) : Term extension Commercial Banking: Commercial real estate loans $ 123 Commercial loans 648 Total Commercial Banking 771 Total $ 771
Schedule of loan delinquencies	The following table provides information related to the amortized cost basis of loan payment delinquencies at September 30, 2024 (in thousands): 30-59 days 60-89 days 90 days or Total Current Total loans 90 days or Personal Banking: Residential mortgage loans $ 685 9,027 5,370 15,082 3,243,076 3,258,158 — Home equity loans 3,907 882 2,558 7,347 1,159,855 1,167,202 — Vehicle loans 9,808 3,166 3,077 16,051 1,858,896 1,874,947 — Consumer loans 969 434 906 2,309 120,776 123,085 717 Total Personal Banking 15,369 13,509 11,911 40,789 6,382,603 6,423,392 717 Commercial Banking: Commercial real estate loans 5,919 7,643 6,167 19,729 2,613,452 2,633,181 — Commercial real estate loans - owner occupied — — — — 361,198 361,198 — Commercial loans 3,260 753 14,484 18,497 1,868,290 1,886,787 328 Total Commercial Banking 9,179 8,396 20,651 38,226 4,842,940 4,881,166 328 Total loans $ 24,548 21,905 32,562 79,015 11,225,543 11,304,558 1,045 The following table provides information related to the amortized cost basis of loan payment delinquencies at December 31, 2023 (in thousands): 30-59 days 60-89 days 90 days or Total Current Total loans 90 days or Personal Banking: Residential mortgage loans $ 30,041 7,796 7,995 45,832 3,382,353 3,428,185 1,671 Home equity loans 5,761 982 3,126 9,869 1,217,989 1,227,858 26 Vehicle loans 10,382 3,326 3,051 16,759 1,991,842 2,008,601 44 Consumer loans 829 428 927 2,184 115,242 117,426 722 Total Personal Banking 47,013 12,532 15,099 74,644 6,707,426 6,782,070 2,463 Commercial Banking: Commercial real estate loans 2,010 1,031 6,535 9,576 2,618,881 2,628,457 225 Commercial real estate loans - owner occupied 1,194 — 177 1,371 344,182 345,553 — Commercial loans 4,196 703 2,780 7,679 1,651,050 1,658,729 10 Total Commercial Banking 7,400 1,734 9,492 18,626 4,614,113 4,632,739 235 Total originated loans $ 54,413 14,266 24,591 93,270 11,321,539 11,414,809 2,698
Schedule of credit quality indicators	The following table presents the amortized cost basis of our loan portfolio by year of origination and credit quality indicator and the current period charge-offs by year of origination for each portfolio segment as of September 30, 2024 (in thousands): YTD September 30, 2024 2023 2022 2021 2020 Prior Revolving loans Revolving loans converted to term loans Total loans Personal Banking: Residential mortgage loans Pass $ 23,970 195,945 638,920 759,324 478,181 1,150,387 — — 3,246,727 Substandard — 51 1,401 267 259 9,453 — — 11,431 Total residential mortgage loans 23,970 195,996 640,321 759,591 478,440 1,159,840 — — 3,258,158 Residential mortgage current period charge-offs — — (262) — (113) (294) — — (669) Home equity loans Pass 22,491 61,170 89,615 92,832 129,272 248,594 474,033 44,944 1,162,951 Substandard — — 120 91 162 1,613 1,308 957 4,251 Total home equity loans 22,491 61,170 89,735 92,923 129,434 250,207 475,341 45,901 1,167,202 Home equity current period charge-offs — — (41) (2) (197) (411) (557) (331) (1,539) Vehicle loans Pass 453,937 503,197 497,117 265,552 78,513 71,623 — — 1,869,939 Substandard 157 1,086 1,717 1,276 307 465 — — 5,008 Total vehicle loans 454,094 504,283 498,834 266,828 78,820 72,088 — — 1,874,947 Vehicle current period charge-offs (78) (1,705) (1,974) (1,644) (323) (854) — — (6,578) Consumer loans Pass 22,809 16,742 7,426 3,339 997 6,704 63,495 659 122,171 Substandard 3 61 25 8 — 14 722 81 914 Total consumer loans 22,812 16,803 7,451 3,347 997 6,718 64,217 740 123,085 Consumer loan current period charge-offs (349) (1,736) (470) (198) (62) (725) (543) (33) (4,116) Total Personal Banking 523,367 778,252 1,236,341 1,122,689 687,691 1,488,853 539,558 46,641 6,423,392 Commercial Banking: Commercial real estate loans Pass 133,296 240,845 481,825 261,936 293,395 871,032 24,784 23,890 2,331,003 Special mention — 4,294 17,645 18,323 14,570 15,376 746 — 70,954 Substandard — 6,902 41,510 48,625 21,533 112,403 175 76 231,224 Total commercial real estate loans 133,296 252,041 540,980 328,884 329,498 998,811 25,705 23,966 2,633,181 Commercial real estate current period charge-offs — — (44) (360) — (920) — — (1,324) Commercial real estate loans - owner occupied Pass 52,440 13,999 28,641 46,102 12,138 148,673 1,991 — 303,984 Special mention — 1,184 7,194 1,293 — 7,068 — — 16,739 Substandard — 12,865 875 — 4,595 18,679 751 2,710 40,475 Total commercial real estate loans - owner occupied 52,440 28,048 36,710 47,395 16,733 174,420 2,742 2,710 361,198 Commercial real estate - owner occupied current period charge-offs — — — — — — — — — Commercial loans Pass 510,269 380,280 279,532 32,637 14,137 56,373 531,611 3,594 1,808,433 Special mention 7,434 26,726 4,180 652 271 100 11,255 1,096 51,714 Substandard 349 10,075 5,506 1,001 148 1,689 4,746 3,126 26,640 Total commercial loans 518,052 417,081 289,218 34,290 14,556 58,162 547,612 7,816 1,886,787 Commercial loans current period charge-offs — (170) (2,777) (115) (226) (627) (119) (28) (4,062) Total Commercial Banking 703,788 697,170 866,908 410,569 360,787 1,231,393 576,059 34,492 4,881,166 Total loans $ 1,227,155 1,475,422 2,103,249 1,533,258 1,048,478 2,720,246 1,115,617 81,133 11,304,558 The following table presents the amortized cost basis of our loan portfolio by year of origination and credit quality indicator for each portfolio segment as of December 31, 2023 (in thousands): 2023 2022 2021 2020 2019 Prior Revolving loans Revolving loans converted to term loans Total loans Personal Banking: Residential mortgage loans Pass $ 186,081 665,379 792,488 506,068 244,678 1,019,152 — — 3,413,846 Substandard — 1,581 — 1,252 311 11,195 — — 14,339 Total residential mortgage loans 186,081 666,960 792,488 507,320 244,989 1,030,347 — — 3,428,185 Residential mortgage current period charge-offs — (9) (5) (130) (23) (1,023) — — (1,189) Home equity loans Pass 71,497 100,639 106,043 146,121 94,144 197,259 463,868 43,526 1,223,097 Substandard — 236 54 197 35 1,733 1,447 1,059 4,761 Total home equity loans 71,497 100,875 106,097 146,318 94,179 198,992 465,315 44,585 1,227,858 Home equity current period charge-offs — (53) (46) — (48) (352) (144) (209) (852) Vehicle loans Pass 664,876 682,275 397,809 132,775 67,853 58,153 — — 2,003,741 Substandard 646 1,418 1,453 299 556 488 — — 4,860 Total vehicle loans 665,522 683,693 399,262 133,074 68,409 58,641 — — 2,008,601 Vehicle current period charge-offs (678) (1,844) (1,967) (475) (652) (853) — — (6,468) Consumer loans Pass 24,277 11,582 5,552 2,072 1,355 6,603 64,214 820 116,475 Substandard 55 43 19 6 6 46 726 50 951 Total consumer loans 24,332 11,625 5,571 2,078 1,361 6,649 64,940 870 117,426 Consumer loan current period charge-offs (3,412) (511) (390) (157) (177) (980) (317) (38) (5,983) Total Personal Banking 947,432 1,463,153 1,303,418 788,790 408,938 1,294,629 530,255 45,455 6,782,070 Commercial Banking: Commercial real estate loans Pass 223,335 470,762 303,873 332,620 228,382 745,244 27,583 24,804 2,356,603 Special Mention 2,819 24,735 27,871 5,365 4,053 38,665 711 — 104,219 Substandard 1,920 750 26,850 18,167 37,044 82,717 79 108 167,635 Total commercial real estate loans 228,074 496,247 358,594 356,152 269,479 866,626 28,373 24,912 2,628,457 Commercial real estate current period (14) — (492) — (51) (1,741) — — (2,298) Commercial real estate loans - Pass 24,725 51,986 47,655 15,984 28,614 140,175 2,378 2,390 313,907 Special Mention 1,221 120 1,218 — 14,386 2,952 — — 19,897 Substandard — — 118 1,666 4,646 4,641 — 678 11,749 Total commercial real estate loans - 25,946 52,106 48,991 17,650 47,646 147,768 2,378 3,068 345,553 Commercial real estate - owner occupied current period charge-offs — — — — — (68) — — (68) Commercial loans Pass 482,605 430,378 73,469 26,868 34,090 54,617 531,742 4,110 1,637,879 Special Mention 508 3,671 52 299 240 26 1,882 — 6,678 Substandard — 3,015 872 356 2,361 840 4,729 1,999 14,172 Total commercial loans 483,113 437,064 74,393 27,523 36,691 55,483 538,353 6,109 1,658,729 Commercial loans current period (35) (2,072) (517) (430) (205) (845) (60) (2) (4,166) Total Commercial Banking 737,133 985,417 481,978 401,325 353,816 1,069,877 569,104 34,089 4,632,739 Total loans $ 1,684,565 2,448,570 1,785,396 1,190,115 762,754 2,364,506 1,099,359 79,544 11,414,809

Goodwill and Other Intangible_2

Goodwill and Other Intangible Assets (Tables)	9 Months Ended
	Sep. 30, 2024
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of intangible assets subject to amortization	The following table provides information for intangible assets subject to amortization at the dates indicated (in thousands): September 30, 2024 December 31, 2023 Amortizable intangible assets: Core deposit intangibles - gross $ 74,899 74,899 Less: accumulated amortization (71,536) (69,609) Core deposit intangibles - net $ 3,363 5,290 Total intangible assets - net $ 3,363 5,290
Schedule of the actual aggregate amortization expense as well as estimated aggregate amortization expense, based upon current levels of intangible assets	The following table shows the actual aggregate amortization expense for the quarters ended September 30, 2024 and 2023, as well as the estimated aggregate amortization expense, based upon current levels of intangible assets, for the current fiscal year and each of the succeeding fiscal years until the intangible assets are fully amortized (in thousands): For the quarter ended September 30, 2024 $ 590 For the quarter ended September 30, 2023 795 For the nine months ended September 30, 2024 1,926 For the nine months ended September 30, 2023 2,546 For the year ending December 31, 2024 2,452 For the year ending December 31, 2025 1,662 For the year ending December 31, 2026 871 For the year ending December 31, 2027 304
Schedule of the changes in carrying amount of goodwill	The following table provides information for the changes in the carrying amount of goodwill (in thousands): Total Balance at December 31, 2023 $ 380,997 Balance at September 30, 2024 $ 380,997

Borrowed Funds (Tables)

Borrowed Funds (Tables)	9 Months Ended
	Sep. 30, 2024
Debt Disclosure [Abstract]
Schedule of borrowed funds	Borrowed funds at September 30, 2024 and December 31, 2023 are presented in the following table (dollars in thousands): September 30, 2024 December 31, 2023 Amount Average rate Amount Average rate Term notes payable to the FHLB of Pittsburgh, due within one year $ 175,000 5.15 % $ 175,000 5.71 % Notes payable to the FHLB of Pittsburgh, due within one year — — % 163,500 5.70 % Collateralized borrowings, due within one year 21,624 1.59 % 35,495 1.72 % Collateral received, due within one year 7,750 5.72 % 24,900 5.26 % Total borrowed funds $ 204,374 $ 398,895
Schedule of capital debt securities and junior subordinated deferrable interest debentures	The following table sets forth a summary of the cumulative trust preferred securities and the junior subordinated debt held by the Trust as of the date listed (dollars in thousands). Maturity date Interest rate Capital debt securities September 30, 2024 December 31, 2023 Northwest Bancorp Capital Trust III December 30, 2035 3-month SOFR plus 1.38% $ 50,000 51,547 51,547 Northwest Bancorp Statutory Trust IV December 15, 2035 3-month SOFR plus 1.38% 50,000 51,547 51,547 LNB Trust II June 15, 2037 3-month SOFR plus 1.48% 7,875 8,119 8,119 Union National Capital Trust I (1) January 23, 2034 3-month SOFR plus 2.85% 8,000 8,018 7,999 Union National Capital Trust II (1) November 23, 2034 3-month SOFR plus 2.00% 3,000 2,816 2,796 MFBC Statutory Trust I (1) September 15, 2035 3-month SOFR plus 1.70% 5,000 3,865 3,788 Universal Preferred Trust (1) October 7, 2035 3-month SOFR plus 1.69% 5,000 3,857 3,778 $ 128,875 129,769 129,574 (1) Net of discounts due to the fair value adjustment made at the time of acquisition.

Earnings Per Share (Tables)

Earnings Per Share (Tables)	9 Months Ended
	Sep. 30, 2024
Earnings Per Share [Abstract]
Schedule of computation of basic and diluted earnings per share	The following table sets forth the computation of basic and diluted EPS (in thousands, except share data and per share amounts): Quarter ended September 30, Nine months ended September 30, 2024 2023 2024 2023 Numerator for earnings per share - Basic and Diluted: Net income - treasury stock method - Basic and Diluted $ 33,618 39,220 67,528 105,943 Less: Dividends and undistributed earnings allocated to participating securities 43 99 86 267 Net income available to common shareholders - two class method - Basic and Diluted $ 33,575 39,121 67,442 105,676 Denominator for earnings per share - treasury stock method - Basic and Diluted Weighted average common shares outstanding - Basic 127,206,579 126,767,507 127,015,478 126,629,786 Add: Potentially dilutive shares 507,932 234,139 553,536 373,605 Denominator for treasury stock method - Diluted 127,714,511 127,001,646 127,569,014 127,003,391 Denominator for earnings per share - two class method - Basic and Diluted: Weighted average common shares outstanding - Basic 127,206,579 126,767,507 127,015,478 126,629,786 Add: Average participating shares outstanding 162,943 320,177 162,943 320,177 Denominator for two class method - Diluted 127,369,522 127,087,684 127,178,421 126,949,963 Basic earnings per share $ 0.26 0.31 0.53 0.83 Diluted earnings per share $ 0.26 0.31 0.53 0.83 Anti-dilutive awards (1) 2,195 2,832 2,369 2,832 (1) Reflects the total number of shares related to outstanding options that have been excluded from the computation of diluted earnings per share because the impact would have been anti-dilutive.

Pension and Other Post-Retire_2

Pension and Other Post-Retirement Benefits (Tables)	9 Months Ended
	Sep. 30, 2024
Retirement Benefits [Abstract]
Schedule of net periodic costs for the defined benefit pension plans and the post retirement healthcare plans	The following table sets forth the net periodic costs for the defined benefit pension plans and post-retirement healthcare plans for the periods indicated (in thousands): Quarter ended September 30, Pension benefits Other post-retirement benefits 2024 2023 2024 2023 Service cost $ 1,425 1,560 — — Interest cost 2,205 2,245 15 7 Expected return on plan assets (3,776) (3,479) — — Amortization of prior service cost (563) (564) — — Amortization of the net loss 18 20 10 10 Net periodic cost $ (691) (218) 25 17 Nine months ended September 30, Pension benefits Other post-retirement benefits 2024 2023 2024 2023 Service cost $ 4,275 4,680 — — Interest cost 6,615 6,735 45 21 Expected return on plan assets (11,328) (10,437) — — Amortization of prior service cost (1,689) (1,692) — — Amortization of the net loss 54 60 30 30 Net periodic cost $ (2,073) (654) 75 51

Disclosures About Fair Value _2

Disclosures About Fair Value of Financial Instruments (Tables)	9 Months Ended
	Sep. 30, 2024
Fair Value Disclosures [Abstract]
Schedule of the carrying amount and estimated fair value of the entity's financial instruments included in the consolidated statement of financial condition	The following table sets forth the carrying amount and estimated fair value of our financial instruments included in the Consolidated Statement of Financial Condition at September 30, 2024 (in thousands): Carrying Estimated Level 1 Level 2 Level 3 Financial assets: Cash and cash equivalents $ 226,883 226,883 226,883 — — Securities available-for-sale 1,111,868 1,111,868 — 1,111,868 — Securities held-to-maturity 766,772 672,641 — 672,641 — Loans receivable, net 11,169,375 10,494,023 — — 10,494,023 Loans held-for-sale 9,370 9,370 — — 9,370 Accrued interest receivable 46,678 46,678 46,678 — — Interest rate lock commitments 673 673 — — 673 Forward commitments 115 115 — 115 — Foreign exchange swaps 6 6 — 6 — Interest rate swaps designated as hedging instruments 90 90 — 90 — Interest rate swaps not designated as hedging instruments 31,761 31,761 — 31,761 — FHLB stock 21,223 21,223 — — — Total financial assets $ 13,384,814 12,615,331 273,561 1,816,481 10,504,066 Financial liabilities: Savings and checking deposits $ 9,361,030 9,361,030 9,361,030 — — Time deposits 2,710,049 2,492,832 — — 2,492,832 Borrowed funds 204,374 194,912 194,912 — — Subordinated debt 114,451 107,555 — 107,555 — Junior subordinated debentures 129,769 120,054 — — 120,054 Foreign exchange swaps 173 173 — 173 — Interest rate swaps designated as hedging instruments 2,085 2,085 — 2,085 — Interest rate swaps not designated as hedging instruments 31,924 31,924 — 31,924 — Risk participation agreements 49 49 — 49 — Accrued interest payable 15,125 15,125 15,125 — — Total financial liabilities $ 12,569,029 12,325,739 9,571,067 141,786 2,612,886 The following table sets forth the carrying amount and estimated fair value of our financial instruments included in the Consolidated Statement of Financial Condition at December 31, 2023 (in thousands): Carrying Estimated Level 1 Level 2 Level 3 Financial assets: Cash and cash equivalents $ 122,260 122,260 122,260 — — Securities available-for-sale 1,043,359 1,043,359 — 1,043,359 — Securities held-to-maturity 814,839 699,506 — 699,506 — Loans receivable, net 11,280,798 10,274,593 — — 10,274,593 Loans held-for-sale 8,768 8,768 — — 8,768 Accrued interest receivable 47,353 47,353 47,353 — — Interest rate lock commitments 641 641 — — 641 Forward commitments 12 12 — 12 — Interest rate swaps designated as hedging instruments 713 713 — 713 — Interest rate swaps not designated as hedging instruments 41,406 41,406 — 41,406 — FHLB stock 30,146 30,146 — — — Total financial assets $ 13,390,295 12,268,757 169,613 1,784,996 10,284,002 Financial liabilities: Savings and checking accounts $ 9,377,021 9,377,021 9,377,021 — — Time deposits 2,602,881 2,113,177 — — 2,113,177 Borrowed funds 398,895 386,446 386,446 — — Subordinated debt 114,189 109,471 — 109,471 — Junior subordinated debentures 129,574 112,159 — — 112,159 Foreign exchange swaps 291 291 — 291 — Interest rate swaps designated as hedging instruments 1,198 1,198 — 1,198 — Interest rate swaps not designated as hedging instruments 41,437 41,437 — 41,437 — Risk participation agreements 14 14 — 14 — Accrued interest payable 13,669 13,669 13,669 — — Total financial liabilities $ 12,679,169 12,154,883 9,777,136 152,411 2,225,336
Schedule of assets and liabilities measured at fair value on a recurring basis	The following table represents assets and liabilities measured at fair value on a recurring basis at September 30, 2024 (in thousands): Level 1 Level 2 Level 3 Total assets Debt securities: U.S. government and agencies $ — 37,795 — 37,795 Government-sponsored enterprises — 132 — 132 States and political subdivisions — 61,085 — 61,085 Corporate — 24,836 — 24,836 Total debt securities — 123,848 — 123,848 Mortgage-backed securities: GNMA — 55,677 — 55,677 FNMA — 65,222 — 65,222 FHLMC — 95,913 — 95,913 Non-agency — 4 — 4 Collateralized mortgage obligations: GNMA — 558,360 — 558,360 FNMA — 78,304 — 78,304 FHLMC — 134,540 — 134,540 Total mortgage-backed securities — 988,020 — 988,020 Interest rate lock commitments — — 673 673 Forward commitments — 115 — 115 Foreign exchange swaps — 6 — 6 Interest rate swaps designated as hedging instruments — 90 — 90 Interest rate swaps not designated as hedging instruments — 31,761 — 31,761 Total assets $ — 1,143,840 673 1,144,513 Foreign exchange swaps $ — 173 — 173 Interest rate swaps designated as hedging instruments — 2,085 — 2,085 Interest rate swaps not designated as hedging instruments — 31,924 — 31,924 Risk participation agreements — 49 — 49 Total liabilities $ — 34,231 — 34,231 The following table represents assets and liabilities measured at fair value on a recurring basis at December 31, 2023 (in thousands): Level 1 Level 2 Level 3 Total assets Debt securities: U.S. government and agencies $ — 58,314 — 58,314 Government-sponsored enterprises — 40,597 — 40,597 States and political subdivisions — 75,469 — 75,469 Corporate — 7,688 — 7,688 Total debt securities — 182,068 — 182,068 Mortgage-backed securities: GNMA — 17,441 — 17,441 FNMA — 102,678 — 102,678 FHLMC — 70,830 — 70,830 Non-agency — 5 — 5 Collateralized mortgage obligations: GNMA — 331,784 — 331,784 FNMA — 148,892 — 148,892 FHLMC — 189,661 — 189,661 Total mortgage-backed securities — 861,291 — 861,291 Interest rate lock commitments — — 641 641 Forward commitments — 12 — 12 Interest rate swaps designated as hedging instruments — 713 — 713 Interest rate swaps not designated as hedging instruments — 41,406 — 41,406 Total assets $ — 1,085,490 641 1,086,131 Foreign exchange swaps $ — 291 — 291 Interest rate swaps designated as hedging instruments — 1,198 — 1,198 Interest rate swaps not designated as hedging instruments — 41,437 — 41,437 Risk participation agreements — 14 — 14 Total liabilities $ — 42,940 — 42,940
Schedule of changes in Level 3 assets and liabilities measured at fair value on a recurring basis	The following table presents the changes in Level 3 assets and liabilities measured at fair value on a recurring basis (in thousands): For the quarter ended September 30, For the nine months ended September 30, 2024 2023 2024 2023 Beginning balance, $ 791 761 641 559 Interest rate lock commitments: Net activity (118) (97) 32 105 Ending balance $ 673 664 673 664
Schedule of fair value measurement for nonrecurring assets	The following table represents the fair market measurement for only those nonrecurring assets that had a fair market value below the carrying amount as of September 30, 2024 (in thousands): Level 1 Level 2 Level 3 Total assets Loans individually assessed $ — — 14,949 14,949 Mortgage servicing rights — — 23 23 Real estate owned, net — — 76 76 Total assets $ — — 15,048 15,048 The following table represents the fair market measurement for only those nonrecurring assets that had a fair market value below the carrying amount as of December 31, 2023 (in thousands): Level 1 Level 2 Level 3 Total assets Loans individually assessed $ — — 36,747 36,747 Mortgage servicing rights — — 133 133 Real estate owned, net — — 104 104 Total assets $ — — 36,984 36,984
Schedule of quantitative information about assets measured at fair value on a recurring and nonrecurring basis for Level 3 fair value measurements	The following table presents additional quantitative information about assets measured at fair value on a recurring and nonrecurring basis and for which we have utilized Level 3 inputs to determine fair value at September 30, 2024 (in thousands): Fair value Valuation techniques Significant Range (weighted average) Loans individually assessed $ 14,949 Appraisal value (1) Estimated cost to sell 10% Mortgage servicing rights 23 Discounted cash flow Annual service cost $88 Prepayment rate 6.5% to 18.7% (11.0%) Expected life (months) 50.3 to 101.9 (70.5) Option adjusted spread 725 basis points Forward yield curve 5.31% to 4.50% Real estate owned, net 76 Appraisal value (1) Estimated cost to sell 10% Loans held for sale 9,370 Quoted prices for similar loans in active markets adjusted by an expected pull-through rate Estimated pull-through rate 100% (1) Fair value is generally determined through independent appraisals of the underlying collateral, which may include Level 3 inputs that are not identifiable, or by using the discounted cash flow method if the loan is not collateral dependent.

Derivative Financial Instrume_2

Derivative Financial Instruments (Tables)	9 Months Ended
	Sep. 30, 2024
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule of derivative instruments	The following table presents information regarding our derivative financial instruments at the dates indicated (in thousands): Asset derivatives Liability derivatives Notional amount Fair value Notional amount Fair value At September 30, 2024 Derivatives designated as hedging instruments: Interest rate swap agreements $ 50,000 90 125,000 2,085 Derivatives not designated as hedging instruments: Interest rate swap agreements 748,903 31,761 748,903 31,924 Foreign exchange swap agreements 2,987 6 119 173 Interest rate lock commitments 27,536 673 — — Forward commitments 4,514 115 — — Risk participation agreements — — 137,126 49 Total Derivatives $ 833,940 32,645 1,011,148 34,231 At December 31, 2023 Derivatives designated as hedging instruments: Interest rate swap agreements $ 75,000 713 100,000 1,198 Derivatives not designated as hedging instruments: Interest rate swap agreements 725,139 41,406 725,139 41,437 Foreign exchange swap agreements — — 12,278 291 Interest rate lock commitments 21,857 641 — — Forward commitments 281 12 — — Risk participation agreements — — 101,727 14 Total derivatives $ 822,277 42,772 939,144 42,940
Schedule of gain (loss) on derivative instruments	The following table presents income or expense recognized on derivatives for the periods indicated (in thousands): For the quarter ended September 30, For the nine months ended September 30, 2024 2023 2024 2023 Hedging derivatives: Decrease in interest expense $ 732 627 2,198 831 Non-hedging swap derivatives: (Decrease)/increase in other income (221) 203 (45) (127) (Decrease)/increase in mortgage banking income (73) (221) 135 (46)
Schedule of interest rate products designated as hedging instruments	The following table presents information regarding our derivative financial instruments designated as hedging for the quarter ended September 30, 2024 (dollars in thousands): Notional amount Effective rate Estimated decrease to interest expense in the next twelve months Maturity date Remaining term Interest rate products: Issued May 11, 2023 $ 25,000 3.51 % $ (462) 5/11/2027 31 Issued May 12, 2023 25,000 3.56 % (450) 5/12/2028 43 Issued May 19, 2023 25,000 3.86 % (377) 11/19/2027 38 Issued May 31, 2023 25,000 4.04 % (326) 11/30/2026 26 Issued July 26, 2023 25,000 4.24 % (271) 7/26/2028 46 Issued July 31, 2023 25,000 4.27 % (249) 1/31/2028 40 Issued August 9, 2023 25,000 4.31 % (254) 8/9/2027 34 Total $ 175,000 $ (2,389)

Changes in Accumulated Other _2

Changes in Accumulated Other Comprehensive Income (Tables)	9 Months Ended
	Sep. 30, 2024
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Schedule of changes in accumulated other comprehensive income by component	The following tables show the changes in accumulated other comprehensive income by component for the periods indicated (in thousands): For the quarter ended September 30, 2024 Unrealized Change in Change in Total Balance as of June 30, 2024 $ (132,959) 2,110 765 (130,084) Other comprehensive/(loss) income before reclassification adjustments (1) (3) 27,947 (3,654) — 24,293 Amounts reclassified from accumulated other comprehensive income (2) (4) — — (387) (387) Net other comprehensive income/(loss) 27,947 (3,654) (387) 23,906 Balance as of September 30, 2024 $ (105,012) (1,544) 378 (106,178) For the quarter ended September 30, 2023 Unrealized Change in Change in Total Balance as of June 30, 2023 $ (163,272) 1,737 (7,716) (169,251) Other comprehensive (loss)/income before reclassification adjustments (5) (7) (29,715) 1,825 — (27,890) Amounts reclassified from accumulated other comprehensive income (6) (8) — — (382) (382) Net other comprehensive income/(loss) (29,715) 1,825 (382) (28,272) Balance as of September 30, 2023 $ (192,987) 3,562 (8,098) (197,523) (1) Consists of unrealized holding gains, net of tax of ($8,980) . (2) Consists of realized losses, net of tax of $0 . (3) Change in fair value of interest rate swaps, net of tax $1,068 . (4) Consists of realized gains, net of tax of $148 . (5) Consists of unrealized holding losses, net of tax of $9,140 . (6) Consists of realized losses, net of tax of $0 . (7) Change in fair value of interest rate swaps, net of tax ($533) . (8) Consists of realized gains, net of tax of $152 . For the nine months ended September 30, 2024 Unrealized Change in Change in Total Balance as of December 31, 2023 $ (150,659) (374) 1,541 (149,492) Other comprehensive income/(loss) before reclassification adjustments (1) (3) 18,858 (1,170) — 17,688 Amounts reclassified from accumulated other comprehensive income (2) (4) 26,789 — (1,163) 25,626 Net other comprehensive income/(loss) 45,647 (1,170) (1,163) 43,314 Balance as of September 30, 2024 $ (105,012) (1,544) 378 (106,178) For the nine months ended September 30, 2023 Unrealized Change in Change in Total Balance as of December 31, 2022 $ (164,206) — (6,952) (171,158) Other comprehensive loss before reclassification adjustments (5) (7) (34,417) 3,562 — (30,855) Amounts reclassified from accumulated other comprehensive income (6) (8) 5,636 — (1,146) 4,490 Net other comprehensive loss (28,781) 3,562 (1,146) (26,365) Balance as of September 30, 2023 $ (192,987) 3,562 (8,098) (197,523) (1) Consists of unrealized holding gains, net of tax of ($7,054) . (2) Consists of realized losses, net of tax of ($7,706) . (3) Change in fair value of interest rate swaps, net of tax $342 . (4) Consists of realized gains, net of tax of $442 . (5) Consists of unrealized holding losses, net of tax $9,603 . (6) Consists of realized losses, net of tax ($1,731) . (7) Change in fair value of interest rate swaps, net of tax ($1,041) . (8) Consists of realized gains, net of tax of $456 .

Basis of Presentation and Inf_3

Basis of Presentation and Informational Disclosures (Details)	Sep. 30, 2024 bank_location
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Number of banking locations	141

Marketable Securities - Availab

Marketable Securities - Available For Sale (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Amortized cost
Residential mortgage-backed securities	$ 1,248,104	$ 1,240,003
Gross unrealized holding gains
Residential mortgage-backed securities, gross unrealized holding gains	7,718	223
Gross unrealized holding losses
Gross unrealized holding losses	(143,954)	(196,867)
Fair value
Fair value	1,111,868	1,043,359
U.S. government and agencies
Amortized cost
Due after one year through five years		20,000
Due after ten years	46,292	49,383
Gross unrealized holding gains
Due after one year through five years		0
Due after ten years	0	0
Gross unrealized holding losses
Due after one year through five years		(1,135)
Due after ten years	(8,497)	(9,934)
Fair value
Due after one year through five years		18,865
Due after ten years	37,795	39,449
Government-sponsored enterprises
Amortized cost
Due after one year through five years	136	45,986
Due after five years through ten years		386
Gross unrealized holding gains
Due after one year through five years	0	0
Due after five years through ten years		0
Gross unrealized holding losses
Due after one year through five years	(4)	(5,763)
Due after five years through ten years		(12)
Fair value
Due after one year through five years	132	40,223
Due after five years through ten years		374
Municipal securities
Amortized cost
Due after one year through five years	884	4,279
Due after five years through ten years	15,729	20,725
Due after ten years	52,244	60,762
Gross unrealized holding gains
Due after one year through five years	18	22
Due after five years through ten years	277	0
Due after ten years	288	125
Gross unrealized holding losses
Due after one year through five years	(2)	(427)
Due after five years through ten years	(1,382)	(1,437)
Due after ten years	(6,971)	(8,580)
Fair value
Due after one year through five years	900	3,874
Due after five years through ten years	14,624	19,288
Due after ten years	45,561	52,307
Corporate debt issues
Amortized cost
Due after five years through ten years	25,396	8,466
Gross unrealized holding gains
Due after five years through ten years	307	0
Gross unrealized holding losses
Due after five years through ten years	(867)	(778)
Fair value
Due after five years through ten years	24,836	7,688
Mortgage-backed securities
Amortized cost
Due after one year through five years	10,889
Due after five years through ten years	8,723
Due after ten years	1,087,769
Residential mortgage-backed securities	1,107,423	1,030,016
Gross unrealized holding gains
Residential mortgage-backed securities, gross unrealized holding gains	6,828	76
Gross unrealized holding losses
Gross unrealized holding losses	(126,231)	(168,801)
Fair value
Due after one year through five years	10,807
Due after five years through ten years	7,928
Due after ten years	969,242
Fair value	988,020	861,291
Fixed rate pass-through
Amortized cost
Residential mortgage-backed securities	222,573	209,069
Gross unrealized holding gains
Residential mortgage-backed securities, gross unrealized holding gains	2,926	27
Gross unrealized holding losses
Gross unrealized holding losses	(12,641)	(25,222)
Fair value
Fair value	212,858	183,874
Variable rate pass-through
Amortized cost
Residential mortgage-backed securities	3,905	7,140
Gross unrealized holding gains
Residential mortgage-backed securities, gross unrealized holding gains	57	11
Gross unrealized holding losses
Gross unrealized holding losses	(4)	(71)
Fair value
Fair value	3,958	7,080
Fixed rate agency CMOs
Amortized cost
Residential mortgage-backed securities	835,445	789,842
Gross unrealized holding gains
Residential mortgage-backed securities, gross unrealized holding gains	3,801	0
Gross unrealized holding losses
Gross unrealized holding losses	(113,373)	(143,055)
Fair value
Fair value	725,873	646,787
Variable rate agency CMOs
Amortized cost
Residential mortgage-backed securities	45,500	23,965
Gross unrealized holding gains
Residential mortgage-backed securities, gross unrealized holding gains	44	38
Gross unrealized holding losses
Gross unrealized holding losses	(213)	(453)
Fair value
Fair value	$ 45,331	$ 23,550

Marketable Securities - Held To

Marketable Securities - Held To Maturity (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Amortized cost
Amortized cost	$ 766,772	$ 814,839
Gross unrealized holding gains
Gross unrealized holding gains	0	1
Gross unrealized holding losses
Gross unrealized holding losses	(94,131)	(115,334)
Fair value
Fair value	672,641	699,506
U.S. government-sponsored enterprises
Amortized cost
Due after one year through five years	109,460	69,471
Due after five years through ten years	15,000	54,987
Gross unrealized holding gains
Due after one year through five years	0	0
Due after five years through ten years	0	0
Gross unrealized holding losses
Due after one year through five years	(10,520)	(8,100)
Due after five years through ten years	(1,923)	(8,700)
Fair value
Due after one year through five years	98,940	61,371
Due after five years through ten years	13,077	46,287
Mortgage-backed securities
Amortized cost
Due after one year through five years	19,983
Due after five years through ten years	20,192
Amortized cost	642,312	690,381
Gross unrealized holding gains
Gross unrealized holding gains	0	1
Gross unrealized holding losses
Gross unrealized holding losses	(81,688)	(98,534)
Fair value
Due after one year through five years	18,219
Due after five years through ten years	17,088
Fair value	560,624	591,848
Fixed rate pass-through
Amortized cost
Amortized cost	136,439	147,874
Gross unrealized holding gains
Gross unrealized holding gains	0	0
Gross unrealized holding losses
Gross unrealized holding losses	(16,184)	(20,834)
Fair value
Fair value	120,255	127,040
Variable rate pass-through
Amortized cost
Amortized cost	387	449
Gross unrealized holding gains
Gross unrealized holding gains	0	1
Gross unrealized holding losses
Gross unrealized holding losses	0	0
Fair value
Fair value	387	450
Fixed rate agency CMOs
Amortized cost
Amortized cost	504,957	541,529
Gross unrealized holding gains
Gross unrealized holding gains	0	0
Gross unrealized holding losses
Gross unrealized holding losses	(65,502)	(77,694)
Fair value
Fair value	439,455	463,835
Variable rate agency CMOs
Amortized cost
Amortized cost	529	529
Gross unrealized holding gains
Gross unrealized holding gains	0	0
Gross unrealized holding losses
Gross unrealized holding losses	(2)	(6)
Fair value
Fair value	$ 527	$ 523

Marketable Securities - Avail_2

Marketable Securities - Available-for-sale, by Contractual Maturity (Details) - Mortgage-backed securities $ in Thousands	Sep. 30, 2024 USD ($)
Amortized cost
Due within one year	$ 42
Due after one year through five years	10,889
Due after five years through ten years	8,723
Due after ten years	1,087,769
Total mortgage-backed securities	1,107,423
Fair value
Due within one year	43
Due after one year through five years	10,807
Due after five years through ten years	7,928
Due after ten years	969,242
Total mortgage-backed securities	$ 988,020

Marketable Securities - Held _2

Marketable Securities - Held To Maturity, by Contractual Maturity (Details) - Mortgage-backed securities $ in Thousands	Sep. 30, 2024 USD ($)
Amortized cost
Due within one year	$ 64
Due after one year through five years	19,983
Due after five years through ten years	20,192
Due after ten years	602,073
Amortized cost	642,312
Fair value
Due within one year	62
Due after one year through five years	18,219
Due after five years through ten years	17,088
Due after ten years	525,255
Total mortgage-backed securities	$ 560,624

Marketable Securities - Fair Va

Marketable Securities - Fair Value of and Gross Unrealized Losses on Investment Securities (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2024 USD ($) position	Dec. 31, 2023 USD ($)
Marketable securities available-for-sale
Less than 12 months - Fair value	$ 52,864	$ 20,729
Less than 12 months - Unrealized loss	(266)	(323)
12 months or more - Fair value	1,382,438	1,704,010
12 months or more - Unrealized loss	(237,819)	(311,878)
Total - Fair value	1,435,302	1,724,739
Total - Unrealized loss	$ (238,085)	(312,201)
Number of investment positions with unrealized losses | position	325
U.S. government-sponsored enterprises
Marketable securities available-for-sale
Less than 12 months - Fair value	$ 0	0
Less than 12 months - Unrealized loss	0	0
12 months or more - Fair value	149,944	206,569
12 months or more - Unrealized loss	(20,944)	(33,644)
Total - Fair value	149,944	206,569
Total - Unrealized loss	(20,944)	(33,644)
Corporate debt issues
Marketable securities available-for-sale
Less than 12 months - Fair value	2,677	0
Less than 12 months - Unrealized loss	(92)	0
12 months or more - Fair value	7,694	7,688
12 months or more - Unrealized loss	(775)	(778)
Total - Fair value	10,371	7,688
Total - Unrealized loss	(867)	(778)
Municipal securities
Marketable securities available-for-sale
Less than 12 months - Fair value	0	2,753
Less than 12 months - Unrealized loss	0	(81)
12 months or more - Fair value	41,002	66,046
12 months or more - Unrealized loss	(8,355)	(10,363)
Total - Fair value	41,002	68,799
Total - Unrealized loss	(8,355)	(10,444)
Mortgage-backed securities
Marketable securities available-for-sale
Less than 12 months - Fair value	50,187	17,976
Less than 12 months - Unrealized loss	(174)	(242)
12 months or more - Fair value	1,183,798	1,423,707
12 months or more - Unrealized loss	(207,745)	(267,093)
Total - Fair value	1,233,985	1,441,683
Total - Unrealized loss	$ (207,919)	$ (267,335)

Marketable Securities - Credit

Marketable Securities - Credit Quality of Held To Maturity Securities (Details) $ in Thousands	Sep. 30, 2024 USD ($)
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Total marketable securities held-to-maturity	$ 766,772
Mortgage-backed securities
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Total marketable securities held-to-maturity	642,312
U.S. government and agencies
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Total marketable securities held-to-maturity	124,460
AA+
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Total marketable securities held-to-maturity	766,772
AA+ | Mortgage-backed securities
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Total marketable securities held-to-maturity	642,312
AA+ | U.S. government and agencies
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Total marketable securities held-to-maturity	$ 124,460

Loans Receivable - Originated a

Loans Receivable - Originated and Acquired Loans (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Jun. 30, 2024	Dec. 31, 2023	Sep. 30, 2023	Jun. 30, 2023	Dec. 31, 2022
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable, gross	$ 11,304,558		$ 11,414,809
Allowance for credit losses	(125,813)	$ (125,070)	(125,243)	$ (124,841)	$ (124,423)	$ (118,036)
Total loans receivable, net	11,178,745		11,289,566
Loans held-for-sale	9,370		8,768
Unearned income, unamortized premiums and discounts and deferred fees and costs	60,000		68,000
Personal Banking
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable, gross	6,423,392		6,782,070
Allowance for credit losses	(42,288)	(43,241)	(51,706)	(50,562)	(50,851)	(48,887)
Personal Banking | Residential mortgage loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable, gross	3,258,158		3,428,185
Allowance for credit losses	(13,553)	(14,999)	(18,193)	(17,090)	(17,556)	(19,261)
Loans held-for-sale	9,000		9,000
Personal Banking | Home equity loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable, gross	1,167,202		1,227,858
Allowance for credit losses	(4,704)	(5,210)	(5,403)	(5,044)	(5,002)	(5,902)
Personal Banking | Vehicle loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable, gross	1,874,947		2,008,601
Allowance for credit losses	(22,162)	(21,364)	(26,911)	(27,226)	(27,283)	(23,059)
Personal Banking | Consumer loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable, gross	123,085		117,426
Allowance for credit losses	(1,869)	(1,668)	(1,199)	(1,202)	(1,010)	(665)
Commercial Banking
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable, gross	4,881,166		4,632,739
Allowance for credit losses	(83,525)	(81,829)	(73,537)	(74,279)	(73,572)	(69,149)
Commercial Banking | Commercial real estate loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable, gross	2,633,181		2,628,457
Allowance for credit losses	(48,613)	(50,559)	(51,267)	(48,582)	(50,056)	(44,506)
Loans held-for-sale	0		0
Commercial Banking | Commercial real estate loans - owner occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable, gross	361,198		345,553
Allowance for credit losses	(3,849)	(3,615)	(3,775)	(3,479)	(3,498)	(4,004)
Commercial Banking | Commercial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable, gross	1,886,787		1,658,729
Allowance for credit losses	(31,063)	$ (27,655)	(18,495)	$ (22,218)	$ (20,018)	$ (20,639)
Originated
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable, gross	10,752,795		10,773,908
Allowance for credit losses	(120,883)		(118,079)
Total loans receivable, net	10,631,912		10,655,829
Originated | Personal Banking
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable, gross	6,111,082		6,441,695
Originated | Personal Banking | Residential mortgage loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable, gross	3,128,027		3,283,299
Originated | Personal Banking | Home equity loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable, gross	1,063,095		1,103,410
Originated | Personal Banking | Vehicle loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable, gross	1,824,554		1,943,540
Originated | Personal Banking | Consumer loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable, gross	95,406		111,446
Originated | Commercial Banking
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable, gross	4,641,713		4,332,213
Originated | Commercial Banking | Commercial real estate loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable, gross	2,422,509		2,389,537
Originated | Commercial Banking | Commercial real estate loans - owner occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable, gross	337,561		319,195
Originated | Commercial Banking | Commercial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable, gross	1,881,643		1,623,481
Acquired
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable, gross	551,763		640,901
Allowance for credit losses	(4,930)		(7,164)
Total loans receivable, net	546,833		633,737
Acquired | Personal Banking
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable, gross	312,310		340,375
Acquired | Personal Banking | Residential mortgage loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable, gross	130,131		144,886
Acquired | Personal Banking | Home equity loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable, gross	104,107		124,448
Acquired | Personal Banking | Vehicle loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable, gross	50,393		65,061
Acquired | Personal Banking | Consumer loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable, gross	27,679		5,980
Acquired | Commercial Banking
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable, gross	239,453		300,526
Acquired | Commercial Banking | Commercial real estate loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable, gross	210,672		238,920
Acquired | Commercial Banking | Commercial real estate loans - owner occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable, gross	23,637		26,358
Acquired | Commercial Banking | Commercial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable, gross	$ 5,144		$ 35,248

Loans Receivable - Changes in t

Loans Receivable - Changes in the Allowance for Losses on Loans Receivable (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2023
Changes in allowance for losses on allocated loans receivable
Beginning balance	$ 125,070	$ 124,423	$ 125,243	$ 118,036	$ 118,036
Current period provision	5,727	3,983	12,130	14,863
Charge-offs	(6,760)	(5,346)	(18,288)	(15,217)
Recoveries	1,776	1,781	6,728	6,733
Ending balance	125,813	124,841	125,813	124,841	125,243
ASU 2022-02 Adoption
Changes in allowance for losses on allocated loans receivable
Beginning balance				426	426
Off-Balance Sheet Exposure
Changes in allowance for losses on allocated loans receivable
Beginning balance	13,785	15,959	17,123	12,913	12,913
Current period provision	(852)	(2,981)	(4,190)	65
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Ending balance	12,933	12,978	12,933	12,978	17,123
Off-Balance Sheet Exposure | ASU 2022-02 Adoption
Changes in allowance for losses on allocated loans receivable
Beginning balance				0	0
Personal Banking
Changes in allowance for losses on allocated loans receivable
Beginning balance	43,241	50,851	51,706	48,887	48,887
Current period provision	2,441	2,251	(1,111)	7,978
Charge-offs	(4,705)	(3,576)	(12,902)	(10,233)
Recoveries	1,311	1,036	4,595	3,930
Ending balance	42,288	50,562	42,288	50,562	51,706
Personal Banking | ASU 2022-02 Adoption
Changes in allowance for losses on allocated loans receivable
Beginning balance				0	0
Personal Banking | Off-Balance Sheet Exposure
Changes in allowance for losses on allocated loans receivable
Beginning balance	64	68	67	78	78
Current period provision	(5)	2	(8)	(8)
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Ending balance	59	70	59	70	67
Personal Banking | Off-Balance Sheet Exposure | ASU 2022-02 Adoption
Changes in allowance for losses on allocated loans receivable
Beginning balance				0	0
Personal Banking | Residential mortgage loans
Changes in allowance for losses on allocated loans receivable
Beginning balance	14,999	17,556	18,193	19,261	19,261
Current period provision	(1,444)	(370)	(5,218)	(2,047)
Charge-offs	(255)	(171)	(669)	(923)	(1,189)
Recoveries	253	75	1,247	799
Ending balance	13,553	17,090	13,553	17,090	18,193
Personal Banking | Residential mortgage loans | ASU 2022-02 Adoption
Changes in allowance for losses on allocated loans receivable
Beginning balance				0	0
Personal Banking | Residential mortgage loans | Off-Balance Sheet Exposure
Changes in allowance for losses on allocated loans receivable
Beginning balance	1	4	2	4	4
Current period provision	(1)	(1)	(2)	(1)
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Ending balance	0	3	0	3	2
Personal Banking | Residential mortgage loans | Off-Balance Sheet Exposure | ASU 2022-02 Adoption
Changes in allowance for losses on allocated loans receivable
Beginning balance				0	0
Personal Banking | Home equity loans
Changes in allowance for losses on allocated loans receivable
Beginning balance	5,210	5,002	5,403	5,902	5,902
Current period provision	187	201	53	(705)
Charge-offs	(890)	(320)	(1,539)	(719)	(852)
Recoveries	197	161	787	566
Ending balance	4,704	5,044	4,704	5,044	5,403
Personal Banking | Home equity loans | ASU 2022-02 Adoption
Changes in allowance for losses on allocated loans receivable
Beginning balance				0	0
Personal Banking | Home equity loans | Off-Balance Sheet Exposure
Changes in allowance for losses on allocated loans receivable
Beginning balance	63	64	65	74	74
Current period provision	(4)	3	(6)	(7)
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Ending balance	59	67	59	67	65
Personal Banking | Home equity loans | Off-Balance Sheet Exposure | ASU 2022-02 Adoption
Changes in allowance for losses on allocated loans receivable
Beginning balance				0	0
Personal Banking | Vehicle loans
Changes in allowance for losses on allocated loans receivable
Beginning balance	21,364	27,283	26,911	23,059	23,059
Current period provision	2,371	984	444	7,267
Charge-offs	(2,064)	(1,524)	(6,578)	(4,731)	(6,468)
Recoveries	491	483	1,385	1,631
Ending balance	22,162	27,226	22,162	27,226	26,911
Personal Banking | Vehicle loans | ASU 2022-02 Adoption
Changes in allowance for losses on allocated loans receivable
Beginning balance				0	0
Personal Banking | Consumer loans
Changes in allowance for losses on allocated loans receivable
Beginning balance	1,668	1,010	1,199	665	665
Current period provision	1,327	1,436	3,610	3,463
Charge-offs	(1,496)	(1,561)	(4,116)	(3,860)	(5,983)
Recoveries	370	317	1,176	934
Ending balance	1,869	1,202	1,869	1,202	1,199
Personal Banking | Consumer loans | ASU 2022-02 Adoption
Changes in allowance for losses on allocated loans receivable
Beginning balance				0	0
Commercial Banking
Changes in allowance for losses on allocated loans receivable
Beginning balance	81,829	73,572	73,537	69,149	69,149
Current period provision	3,286	1,732	13,241	6,885
Charge-offs	(2,055)	(1,770)	(5,386)	(4,984)
Recoveries	465	745	2,133	2,803
Ending balance	83,525	74,279	83,525	74,279	73,537
Commercial Banking | ASU 2022-02 Adoption
Changes in allowance for losses on allocated loans receivable
Beginning balance				426	426
Commercial Banking | Off-Balance Sheet Exposure
Changes in allowance for losses on allocated loans receivable
Beginning balance	13,721	15,891	17,056	12,835	12,835
Current period provision	(847)	(2,983)	(4,182)	73
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Ending balance	12,874	12,908	12,874	12,908	17,056
Commercial Banking | Off-Balance Sheet Exposure | ASU 2022-02 Adoption
Changes in allowance for losses on allocated loans receivable
Beginning balance				0	0
Commercial Banking | Commercial real estate loans
Changes in allowance for losses on allocated loans receivable
Beginning balance	50,559	50,056	51,267	44,506	44,506
Current period provision	(1,577)	(1,110)	(2,289)	3,587
Charge-offs	(475)	(484)	(1,324)	(1,556)	(2,298)
Recoveries	106	120	959	1,619
Ending balance	48,613	48,582	48,613	48,582	51,267
Commercial Banking | Commercial real estate loans | ASU 2022-02 Adoption
Changes in allowance for losses on allocated loans receivable
Beginning balance				426	426
Commercial Banking | Commercial real estate loans | Off-Balance Sheet Exposure
Changes in allowance for losses on allocated loans receivable
Beginning balance	4,450	7,655	6,147	5,375	5,375
Current period provision	(1,043)	(2,858)	(2,740)	(578)
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Ending balance	3,407	4,797	3,407	4,797	6,147
Commercial Banking | Commercial real estate loans | Off-Balance Sheet Exposure | ASU 2022-02 Adoption
Changes in allowance for losses on allocated loans receivable
Beginning balance				0	0
Commercial Banking | Commercial real estate loans - owner occupied
Changes in allowance for losses on allocated loans receivable
Beginning balance	3,615	3,498	3,775	4,004	4,004
Current period provision	223	(30)	42	(515)
Charge-offs	0	0	0	(68)	(68)
Recoveries	11	11	32	58
Ending balance	3,849	3,479	3,849	3,479	3,775
Commercial Banking | Commercial real estate loans - owner occupied | ASU 2022-02 Adoption
Changes in allowance for losses on allocated loans receivable
Beginning balance				0	0
Commercial Banking | Commercial real estate loans - owner occupied | Off-Balance Sheet Exposure
Changes in allowance for losses on allocated loans receivable
Beginning balance	151	320	173	379	379
Current period provision	8	(180)	(14)	(239)
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Ending balance	159	140	159	140	173
Commercial Banking | Commercial real estate loans - owner occupied | Off-Balance Sheet Exposure | ASU 2022-02 Adoption
Changes in allowance for losses on allocated loans receivable
Beginning balance				0	0
Commercial Banking | Commercial loans
Changes in allowance for losses on allocated loans receivable
Beginning balance	27,655	20,018	18,495	20,639	20,639
Current period provision	4,640	2,872	15,488	3,813
Charge-offs	(1,580)	(1,286)	(4,062)	(3,360)	(4,166)
Recoveries	348	614	1,142	1,126
Ending balance	31,063	22,218	31,063	22,218	18,495
Commercial Banking | Commercial loans | ASU 2022-02 Adoption
Changes in allowance for losses on allocated loans receivable
Beginning balance				0	0
Commercial Banking | Commercial loans | Off-Balance Sheet Exposure
Changes in allowance for losses on allocated loans receivable
Beginning balance	9,120	7,916	10,736	7,081	7,081
Current period provision	188	55	(1,428)	890
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Ending balance	$ 9,308	$ 7,971	$ 9,308	7,971	10,736
Commercial Banking | Commercial loans | Off-Balance Sheet Exposure | ASU 2022-02 Adoption
Changes in allowance for losses on allocated loans receivable
Beginning balance				$ 0	$ 0

Loans Receivable - Loan Portfol

Loans Receivable - Loan Portfolio by Portfolio Segment and by Class of Financing Receivable (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Jun. 30, 2024	Dec. 31, 2023	Sep. 30, 2023	Jun. 30, 2023	Dec. 31, 2022
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable	$ 11,304,558		$ 11,414,809
Allowance for credit losses	125,813	$ 125,070	125,243	$ 124,841	$ 124,423	$ 118,036
Nonaccrual loans	76,828		94,384			81,236
Loans 90 days past due and accruing	1,045		2,698
Personal Banking
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable	6,423,392		6,782,070
Allowance for credit losses	42,288	43,241	51,706	50,562	50,851	48,887
Nonaccrual loans	16,787		18,264			15,746
Loans 90 days past due and accruing	717		2,463
Personal Banking | Residential mortgage loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable	3,258,158		3,428,185
Allowance for credit losses	13,553	14,999	18,193	17,090	17,556	19,261
Nonaccrual loans	7,541		8,727			7,574
Loans 90 days past due and accruing	0		1,671
Personal Banking | Home equity loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable	1,167,202		1,227,858
Allowance for credit losses	4,704	5,210	5,403	5,044	5,002	5,902
Nonaccrual loans	4,041		4,492			4,145
Loans 90 days past due and accruing	0		26
Personal Banking | Vehicle loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable	1,874,947		2,008,601
Allowance for credit losses	22,162	21,364	26,911	27,226	27,283	23,059
Nonaccrual loans	5,009		4,816			3,771
Loans 90 days past due and accruing	0		44
Personal Banking | Consumer loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable	123,085		117,426
Allowance for credit losses	1,869	1,668	1,199	1,202	1,010	665
Nonaccrual loans	196		229			256
Loans 90 days past due and accruing	717		722
Commercial Banking
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable	4,881,166		4,632,739
Allowance for credit losses	83,525	81,829	73,537	74,279	73,572	69,149
Nonaccrual loans	60,041		76,120			65,490
Loans 90 days past due and accruing	328		235
Commercial Banking | Commercial real estate loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable	2,633,181		2,628,457
Allowance for credit losses	48,613	50,559	51,267	48,582	50,056	44,506
Nonaccrual loans	42,612		71,297			62,239
Loans 90 days past due and accruing	0		225
Commercial Banking | Commercial real estate loans - owner occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable	361,198		345,553
Allowance for credit losses	3,849	3,615	3,775	3,479	3,498	4,004
Nonaccrual loans	859		676			624
Loans 90 days past due and accruing	0		0
Commercial Banking | Commercial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable	1,886,787		1,658,729
Allowance for credit losses	31,063	$ 27,655	18,495	$ 22,218	$ 20,018	20,639
Nonaccrual loans	16,570		4,147			$ 2,627
Loans 90 days past due and accruing	$ 328		$ 10

Loans Receivable - Composition

Loans Receivable - Composition of Impaired Loans by Portfolio Segment and Class of Financing Receivable (Details) - USD ($)	3 Months Ended	9 Months Ended	12 Months Ended
	Sep. 30, 2024	Sep. 30, 2024	Dec. 31, 2023
Composition of impaired loans by portfolio segment and by class of financing receivable
Nonaccrual loans at beginning balance		$ 94,384,000	$ 81,236,000
Nonaccrual loans with an allowance	$ 54,789,000	54,789,000	68,835,000
Nonaccrual loans with no allowance	22,039,000	22,039,000	25,549,000
Nonaccrual loans at ending balance	76,828,000	76,828,000	94,384,000
Loans 90 days past due and accruing	1,045,000	1,045,000	2,698,000
Interest income, accrual method	0	0	0
Amortized cost basis of collateral-dependent loans	46,926,000	46,926,000	67,084,000
Real estate
Composition of impaired loans by portfolio segment and by class of financing receivable
Amortized cost basis of collateral-dependent loans	39,282,000	39,282,000	67,084,000
Equipment
Composition of impaired loans by portfolio segment and by class of financing receivable
Amortized cost basis of collateral-dependent loans	5,061,000	5,061,000
Other
Composition of impaired loans by portfolio segment and by class of financing receivable
Amortized cost basis of collateral-dependent loans	2,583,000	2,583,000
Personal Banking
Composition of impaired loans by portfolio segment and by class of financing receivable
Nonaccrual loans at beginning balance		18,264,000	15,746,000
Nonaccrual loans with an allowance	14,827,000	14,827,000	16,804,000
Nonaccrual loans with no allowance	1,960,000	1,960,000	1,460,000
Nonaccrual loans at ending balance	16,787,000	16,787,000	18,264,000
Loans 90 days past due and accruing	717,000	717,000	2,463,000
Personal Banking | Residential mortgage loans
Composition of impaired loans by portfolio segment and by class of financing receivable
Nonaccrual loans at beginning balance		8,727,000	7,574,000
Nonaccrual loans with an allowance	6,707,000	6,707,000	8,304,000
Nonaccrual loans with no allowance	834,000	834,000	423,000
Nonaccrual loans at ending balance	7,541,000	7,541,000	8,727,000
Loans 90 days past due and accruing	0	0	1,671,000
Personal Banking | Home equity loans
Composition of impaired loans by portfolio segment and by class of financing receivable
Nonaccrual loans at beginning balance		4,492,000	4,145,000
Nonaccrual loans with an allowance	3,900,000	3,900,000	4,084,000
Nonaccrual loans with no allowance	141,000	141,000	408,000
Nonaccrual loans at ending balance	4,041,000	4,041,000	4,492,000
Loans 90 days past due and accruing	0	0	26,000
Personal Banking | Vehicle loans
Composition of impaired loans by portfolio segment and by class of financing receivable
Nonaccrual loans at beginning balance		4,816,000	3,771,000
Nonaccrual loans with an allowance	4,024,000	4,024,000	4,187,000
Nonaccrual loans with no allowance	985,000	985,000	629,000
Nonaccrual loans at ending balance	5,009,000	5,009,000	4,816,000
Loans 90 days past due and accruing	0	0	44,000
Personal Banking | Consumer loans
Composition of impaired loans by portfolio segment and by class of financing receivable
Nonaccrual loans at beginning balance		229,000	256,000
Nonaccrual loans with an allowance	196,000	196,000	229,000
Nonaccrual loans with no allowance	0	0	0
Nonaccrual loans at ending balance	196,000	196,000	229,000
Loans 90 days past due and accruing	717,000	717,000	722,000
Commercial Banking
Composition of impaired loans by portfolio segment and by class of financing receivable
Nonaccrual loans at beginning balance		76,120,000	65,490,000
Nonaccrual loans with an allowance	39,962,000	39,962,000	52,031,000
Nonaccrual loans with no allowance	20,079,000	20,079,000	24,089,000
Nonaccrual loans at ending balance	60,041,000	60,041,000	76,120,000
Loans 90 days past due and accruing	328,000	328,000	235,000
Amortized cost basis of collateral-dependent loans	46,926,000	46,926,000	67,084,000
Commercial Banking | Real estate
Composition of impaired loans by portfolio segment and by class of financing receivable
Amortized cost basis of collateral-dependent loans	39,282,000	39,282,000	67,084,000
Commercial Banking | Equipment
Composition of impaired loans by portfolio segment and by class of financing receivable
Amortized cost basis of collateral-dependent loans	5,061,000	5,061,000
Commercial Banking | Other
Composition of impaired loans by portfolio segment and by class of financing receivable
Amortized cost basis of collateral-dependent loans	2,583,000	2,583,000
Commercial Banking | Commercial real estate loans
Composition of impaired loans by portfolio segment and by class of financing receivable
Nonaccrual loans at beginning balance		71,297,000	62,239,000
Nonaccrual loans with an allowance	22,695,000	22,695,000	47,359,000
Nonaccrual loans with no allowance	19,917,000	19,917,000	23,938,000
Nonaccrual loans at ending balance	42,612,000	42,612,000	71,297,000
Loans 90 days past due and accruing	0	0	225,000
Amortized cost basis of collateral-dependent loans	36,268,000	36,268,000	66,934,000
Commercial Banking | Commercial real estate loans | Real estate
Composition of impaired loans by portfolio segment and by class of financing receivable
Amortized cost basis of collateral-dependent loans	36,268,000	36,268,000	66,934,000
Commercial Banking | Commercial real estate loans | Equipment
Composition of impaired loans by portfolio segment and by class of financing receivable
Amortized cost basis of collateral-dependent loans	0	0
Commercial Banking | Commercial real estate loans | Other
Composition of impaired loans by portfolio segment and by class of financing receivable
Amortized cost basis of collateral-dependent loans	0	0
Commercial Banking | Commercial real estate loans - owner occupied
Composition of impaired loans by portfolio segment and by class of financing receivable
Nonaccrual loans at beginning balance		676,000	624,000
Nonaccrual loans with an allowance	859,000	859,000	676,000
Nonaccrual loans with no allowance	0	0	0
Nonaccrual loans at ending balance	859,000	859,000	676,000
Loans 90 days past due and accruing	0	0	0
Commercial Banking | Commercial loans
Composition of impaired loans by portfolio segment and by class of financing receivable
Nonaccrual loans at beginning balance		4,147,000	2,627,000
Nonaccrual loans with an allowance	16,408,000	16,408,000	3,996,000
Nonaccrual loans with no allowance	162,000	162,000	151,000
Nonaccrual loans at ending balance	16,570,000	16,570,000	4,147,000
Loans 90 days past due and accruing	328,000	328,000	10,000
Amortized cost basis of collateral-dependent loans	10,658,000	10,658,000	150,000
Commercial Banking | Commercial loans | Real estate
Composition of impaired loans by portfolio segment and by class of financing receivable
Amortized cost basis of collateral-dependent loans	3,014,000	3,014,000	$ 150,000
Commercial Banking | Commercial loans | Equipment
Composition of impaired loans by portfolio segment and by class of financing receivable
Amortized cost basis of collateral-dependent loans	5,061,000	5,061,000
Commercial Banking | Commercial loans | Other
Composition of impaired loans by portfolio segment and by class of financing receivable
Amortized cost basis of collateral-dependent loans	$ 2,583,000	$ 2,583,000

Loans Receivable - Amortized Co

Loans Receivable - Amortized Cost Basis of Loans Modified (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Troubled debt restructurings
Total class of financing receivable	0.02%	0%	0.04%	0.01%
Payment delay
Troubled debt restructurings
Loans modified in period	$ 1,357		$ 1,628
Term extension
Troubled debt restructurings
Loans modified in period	558	$ 329	1,767	$ 1,593
Interest rate reduction
Troubled debt restructurings
Loans modified in period			680
Combination term extension and interest rate reduction
Troubled debt restructurings
Loans modified in period	$ 11	$ 85	$ 105	$ 88
Personal Banking
Troubled debt restructurings
Total class of financing receivable	0.01%	0.01%	0.03%	0.01%
Personal Banking | Payment delay
Troubled debt restructurings
Loans modified in period	$ 0		$ 0
Personal Banking | Term extension
Troubled debt restructurings
Loans modified in period	523	$ 314	1,530	$ 733
Personal Banking | Interest rate reduction
Troubled debt restructurings
Loans modified in period			0
Personal Banking | Combination term extension and interest rate reduction
Troubled debt restructurings
Loans modified in period	$ 11	$ 85	$ 97	$ 88
Personal Banking | Residential mortgage loans
Troubled debt restructurings
Total class of financing receivable	0.02%	0.01%	0.03%	0.01%
Personal Banking | Residential mortgage loans | Payment delay
Troubled debt restructurings
Loans modified in period	$ 0		$ 0
Personal Banking | Residential mortgage loans | Term extension
Troubled debt restructurings
Loans modified in period	494	$ 192	979	$ 450
Personal Banking | Residential mortgage loans | Interest rate reduction
Troubled debt restructurings
Loans modified in period			0
Personal Banking | Residential mortgage loans | Combination term extension and interest rate reduction
Troubled debt restructurings
Loans modified in period	$ 0	$ 0	$ 0	$ 0
Personal Banking | Home equity loans
Troubled debt restructurings
Total class of financing receivable	0%	0.02%	0.05%	0.03%
Personal Banking | Home equity loans | Payment delay
Troubled debt restructurings
Loans modified in period	$ 0		$ 0
Personal Banking | Home equity loans | Term extension
Troubled debt restructurings
Loans modified in period	29	$ 122	551	$ 283
Personal Banking | Home equity loans | Interest rate reduction
Troubled debt restructurings
Loans modified in period			0
Personal Banking | Home equity loans | Combination term extension and interest rate reduction
Troubled debt restructurings
Loans modified in period	$ 0	$ 85	$ 84	$ 85
Personal Banking | Consumer loans
Troubled debt restructurings
Total class of financing receivable	0.01%	0%	0.01%	0%
Personal Banking | Consumer loans | Payment delay
Troubled debt restructurings
Loans modified in period	$ 0		$ 0
Personal Banking | Consumer loans | Term extension
Troubled debt restructurings
Loans modified in period	0	$ 0	0	$ 0
Personal Banking | Consumer loans | Interest rate reduction
Troubled debt restructurings
Loans modified in period			0
Personal Banking | Consumer loans | Combination term extension and interest rate reduction
Troubled debt restructurings
Loans modified in period	$ 11	$ 0	$ 13	$ 3
Commercial Banking
Troubled debt restructurings
Total class of financing receivable	0.03%	0%	0.05%	0.02%
Commercial Banking | Payment delay
Troubled debt restructurings
Loans modified in period	$ 1,357		$ 1,628
Commercial Banking | Term extension
Troubled debt restructurings
Loans modified in period	35	$ 15	237	$ 860
Commercial Banking | Interest rate reduction
Troubled debt restructurings
Loans modified in period			680
Commercial Banking | Combination term extension and interest rate reduction
Troubled debt restructurings
Loans modified in period	$ 0	$ 0	$ 8	$ 0
Commercial Banking | Commercial real estate loans
Troubled debt restructurings
Total class of financing receivable	0.05%	0%	0.07%	0.01%
Commercial Banking | Commercial real estate loans | Payment delay
Troubled debt restructurings
Loans modified in period	$ 1,357		$ 1,628
Commercial Banking | Commercial real estate loans | Term extension
Troubled debt restructurings
Loans modified in period	0	$ 0	202	$ 197
Commercial Banking | Commercial real estate loans | Interest rate reduction
Troubled debt restructurings
Loans modified in period			0
Commercial Banking | Commercial real estate loans | Combination term extension and interest rate reduction
Troubled debt restructurings
Loans modified in period	$ 0	$ 0	$ 0	$ 0
Commercial Banking | Commercial real estate loans - owner occupied
Troubled debt restructurings
Total class of financing receivable			0.19%	0%
Commercial Banking | Commercial real estate loans - owner occupied | Payment delay
Troubled debt restructurings
Loans modified in period			$ 0
Commercial Banking | Commercial real estate loans - owner occupied | Term extension
Troubled debt restructurings
Loans modified in period			0	$ 0
Commercial Banking | Commercial real estate loans - owner occupied | Interest rate reduction
Troubled debt restructurings
Loans modified in period			680
Commercial Banking | Commercial real estate loans - owner occupied | Combination term extension and interest rate reduction
Troubled debt restructurings
Loans modified in period			$ 0	$ 0
Commercial Banking | Commercial loans
Troubled debt restructurings
Total class of financing receivable	0%	0%	0%	0.04%
Commercial Banking | Commercial loans | Payment delay
Troubled debt restructurings
Loans modified in period	$ 0		$ 0
Commercial Banking | Commercial loans | Term extension
Troubled debt restructurings
Loans modified in period	35	$ 15	35	$ 663
Commercial Banking | Commercial loans | Interest rate reduction
Troubled debt restructurings
Loans modified in period			0
Commercial Banking | Commercial loans | Combination term extension and interest rate reduction
Troubled debt restructurings
Loans modified in period	$ 0	$ 0	$ 8	$ 0

Loans Receivable - Financing Re

Loans Receivable - Financing Receivable Weighted Average Modified Period (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Troubled debt restructurings
Weighted-average interest rate reduction	5%	17%	2%	17%
Weighted-average term extension in months	142 months	135 months	126 months	68 months
Weighted-average payment deferral in years	3 months 18 days		6 months
Personal Banking
Troubled debt restructurings
Weighted-average interest rate reduction	5%	17%	3%	17%
Weighted-average term extension in months	151 months	140 months	130 months	126 months
Weighted-average payment deferral in years	0 years		0 years
Personal Banking | Residential mortgage loans
Troubled debt restructurings
Weighted-average interest rate reduction	0%		0%	0%
Weighted-average term extension in months	156 months	169 months	151 months	149 months
Weighted-average payment deferral in years	0 years		0 years
Personal Banking | Home equity loans
Troubled debt restructurings
Weighted-average interest rate reduction	0%	5%	2%	5%
Weighted-average term extension in months	105 months	112 months	99 months	96 months
Weighted-average payment deferral in years	0 years		0 years
Personal Banking | Consumer loans
Troubled debt restructurings
Weighted-average interest rate reduction	5%	12%	6%	12%
Weighted-average term extension in months	10 months	0 months	66 months	356 months
Weighted-average payment deferral in years	0 years		0 years
Commercial Banking
Troubled debt restructurings
Weighted-average interest rate reduction	0%		2%	0%
Weighted-average term extension in months	6 months	23 months	102 months	13 months
Weighted-average payment deferral in years	3 months 18 days		6 months
Commercial Banking | Commercial real estate loans
Troubled debt restructurings
Weighted-average interest rate reduction	0%		0%	0%
Weighted-average term extension in months	0 months	0 months	117 months	25 months
Weighted-average payment deferral in years	3 months 18 days		6 months
Commercial Banking | Commercial real estate loans - owner occupied
Troubled debt restructurings
Weighted-average interest rate reduction			2%	0%
Weighted-average term extension in months			0 months	0 months
Weighted-average payment deferral in years			0 years
Commercial Banking | Commercial loans
Troubled debt restructurings
Weighted-average interest rate reduction	0%		4%	0%
Weighted-average term extension in months	6 months	23 months	32 months	9 months
Weighted-average payment deferral in years	0 years		0 years

Loans Receivable - Performance

Loans Receivable - Performance of Loans (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
Current
Troubled debt restructurings
Loans modified in period	$ 4,067	$ 895
30-59 days delinquent
Troubled debt restructurings
Loans modified in period	13	15
60-89 days delinquent
Troubled debt restructurings
Loans modified in period	9	0
90 days or greater delinquent
Troubled debt restructurings
Loans modified in period	91	771
Personal Banking | Current
Troubled debt restructurings
Loans modified in period	1,514	821
Personal Banking | 30-59 days delinquent
Troubled debt restructurings
Loans modified in period	13	0
Personal Banking | 60-89 days delinquent
Troubled debt restructurings
Loans modified in period	9	0
Personal Banking | 90 days or greater delinquent
Troubled debt restructurings
Loans modified in period	91	0
Personal Banking | Residential mortgage loans | Current
Troubled debt restructurings
Loans modified in period	976	450
Personal Banking | Residential mortgage loans | 30-59 days delinquent
Troubled debt restructurings
Loans modified in period	0	0
Personal Banking | Residential mortgage loans | 60-89 days delinquent
Troubled debt restructurings
Loans modified in period	0	0
Personal Banking | Residential mortgage loans | 90 days or greater delinquent
Troubled debt restructurings
Loans modified in period	3	0
Personal Banking | Home equity loans | Current
Troubled debt restructurings
Loans modified in period	525	368
Personal Banking | Home equity loans | 30-59 days delinquent
Troubled debt restructurings
Loans modified in period	13	0
Personal Banking | Home equity loans | 60-89 days delinquent
Troubled debt restructurings
Loans modified in period	9	0
Personal Banking | Home equity loans | 90 days or greater delinquent
Troubled debt restructurings
Loans modified in period	88	0
Personal Banking | Consumer loans | Current
Troubled debt restructurings
Loans modified in period	13	3
Personal Banking | Consumer loans | 30-59 days delinquent
Troubled debt restructurings
Loans modified in period	0	0
Personal Banking | Consumer loans | 60-89 days delinquent
Troubled debt restructurings
Loans modified in period	0	0
Personal Banking | Consumer loans | 90 days or greater delinquent
Troubled debt restructurings
Loans modified in period	0	0
Commercial Banking | Current
Troubled debt restructurings
Loans modified in period	2,553	74
Commercial Banking | 30-59 days delinquent
Troubled debt restructurings
Loans modified in period	0	15
Commercial Banking | 60-89 days delinquent
Troubled debt restructurings
Loans modified in period	0	0
Commercial Banking | 90 days or greater delinquent
Troubled debt restructurings
Loans modified in period	0	771
Commercial Banking | Commercial real estate loans | Current
Troubled debt restructurings
Loans modified in period	1,830	74
Commercial Banking | Commercial real estate loans | 30-59 days delinquent
Troubled debt restructurings
Loans modified in period	0	0
Commercial Banking | Commercial real estate loans | 60-89 days delinquent
Troubled debt restructurings
Loans modified in period	0	0
Commercial Banking | Commercial real estate loans | 90 days or greater delinquent
Troubled debt restructurings
Loans modified in period	0	123
Commercial Banking | Commercial real estate loans - owner occupied | Current
Troubled debt restructurings
Loans modified in period	680
Commercial Banking | Commercial real estate loans - owner occupied | 30-59 days delinquent
Troubled debt restructurings
Loans modified in period	0
Commercial Banking | Commercial real estate loans - owner occupied | 60-89 days delinquent
Troubled debt restructurings
Loans modified in period	0
Commercial Banking | Commercial real estate loans - owner occupied | 90 days or greater delinquent
Troubled debt restructurings
Loans modified in period	0
Commercial Banking | Commercial loans | Current
Troubled debt restructurings
Loans modified in period	43	0
Commercial Banking | Commercial loans | 30-59 days delinquent
Troubled debt restructurings
Loans modified in period	0	15
Commercial Banking | Commercial loans | 60-89 days delinquent
Troubled debt restructurings
Loans modified in period	0	0
Commercial Banking | Commercial loans | 90 days or greater delinquent
Troubled debt restructurings
Loans modified in period	$ 0	$ 648

Loans Receivable - Loans Modifi

Loans Receivable - Loans Modified with Payment Default (Details) - Term extension - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
Personal Banking
Financing Receivable, Modified, Subsequent Default [Line Items]
Loans with payment default and modified	$ 91
Personal Banking | Residential mortgage loans
Financing Receivable, Modified, Subsequent Default [Line Items]
Loans with payment default and modified	3
Personal Banking | Home equity loans
Financing Receivable, Modified, Subsequent Default [Line Items]
Loans with payment default and modified	$ 88
Commercial Banking
Financing Receivable, Modified, Subsequent Default [Line Items]
Loans with payment default and modified		$ 771
Commercial Banking | Commercial real estate loans
Financing Receivable, Modified, Subsequent Default [Line Items]
Loans with payment default and modified		123
Commercial Banking | Commercial loans
Financing Receivable, Modified, Subsequent Default [Line Items]
Loans with payment default and modified		$ 648

Loans Receivable - Loan Delinqu

Loans Receivable - Loan Delinquencies (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Loan payment delinquencies
Total loans receivable	$ 11,304,558	$ 11,414,809
90 days or greater delinquent and accruing	1,045	2,698
Total delinquency
Loan payment delinquencies
Total loans receivable	79,015	93,270
30-59 days delinquent
Loan payment delinquencies
Total loans receivable	24,548	54,413
60-89 days delinquent
Loan payment delinquencies
Total loans receivable	21,905	14,266
90 days or greater delinquent
Loan payment delinquencies
Total loans receivable	32,562	24,591
Current
Loan payment delinquencies
Total loans receivable	11,225,543	11,321,539
Personal Banking
Loan payment delinquencies
Total loans receivable	6,423,392	6,782,070
90 days or greater delinquent and accruing	717	2,463
Personal Banking | Total delinquency
Loan payment delinquencies
Total loans receivable	40,789	74,644
Personal Banking | 30-59 days delinquent
Loan payment delinquencies
Total loans receivable	15,369	47,013
Personal Banking | 60-89 days delinquent
Loan payment delinquencies
Total loans receivable	13,509	12,532
Personal Banking | 90 days or greater delinquent
Loan payment delinquencies
Total loans receivable	11,911	15,099
Personal Banking | Current
Loan payment delinquencies
Total loans receivable	6,382,603	6,707,426
Personal Banking | Residential mortgage loans
Loan payment delinquencies
Total loans receivable	3,258,158	3,428,185
90 days or greater delinquent and accruing	0	1,671
Personal Banking | Residential mortgage loans | Total delinquency
Loan payment delinquencies
Total loans receivable	15,082	45,832
Personal Banking | Residential mortgage loans | 30-59 days delinquent
Loan payment delinquencies
Total loans receivable	685	30,041
Personal Banking | Residential mortgage loans | 60-89 days delinquent
Loan payment delinquencies
Total loans receivable	9,027	7,796
Personal Banking | Residential mortgage loans | 90 days or greater delinquent
Loan payment delinquencies
Total loans receivable	5,370	7,995
Personal Banking | Residential mortgage loans | Current
Loan payment delinquencies
Total loans receivable	3,243,076	3,382,353
Personal Banking | Home equity loans
Loan payment delinquencies
Total loans receivable	1,167,202	1,227,858
90 days or greater delinquent and accruing	0	26
Personal Banking | Home equity loans | Total delinquency
Loan payment delinquencies
Total loans receivable	7,347	9,869
Personal Banking | Home equity loans | 30-59 days delinquent
Loan payment delinquencies
Total loans receivable	3,907	5,761
Personal Banking | Home equity loans | 60-89 days delinquent
Loan payment delinquencies
Total loans receivable	882	982
Personal Banking | Home equity loans | 90 days or greater delinquent
Loan payment delinquencies
Total loans receivable	2,558	3,126
Personal Banking | Home equity loans | Current
Loan payment delinquencies
Total loans receivable	1,159,855	1,217,989
Personal Banking | Vehicle loans
Loan payment delinquencies
Total loans receivable	1,874,947	2,008,601
90 days or greater delinquent and accruing	0	44
Personal Banking | Vehicle loans | Total delinquency
Loan payment delinquencies
Total loans receivable	16,051	16,759
Personal Banking | Vehicle loans | 30-59 days delinquent
Loan payment delinquencies
Total loans receivable	9,808	10,382
Personal Banking | Vehicle loans | 60-89 days delinquent
Loan payment delinquencies
Total loans receivable	3,166	3,326
Personal Banking | Vehicle loans | 90 days or greater delinquent
Loan payment delinquencies
Total loans receivable	3,077	3,051
Personal Banking | Vehicle loans | Current
Loan payment delinquencies
Total loans receivable	1,858,896	1,991,842
Personal Banking | Consumer loans
Loan payment delinquencies
Total loans receivable	123,085	117,426
90 days or greater delinquent and accruing	717	722
Personal Banking | Consumer loans | Total delinquency
Loan payment delinquencies
Total loans receivable	2,309	2,184
Personal Banking | Consumer loans | 30-59 days delinquent
Loan payment delinquencies
Total loans receivable	969	829
Personal Banking | Consumer loans | 60-89 days delinquent
Loan payment delinquencies
Total loans receivable	434	428
Personal Banking | Consumer loans | 90 days or greater delinquent
Loan payment delinquencies
Total loans receivable	906	927
Personal Banking | Consumer loans | Current
Loan payment delinquencies
Total loans receivable	120,776	115,242
Commercial Banking
Loan payment delinquencies
Total loans receivable	4,881,166	4,632,739
90 days or greater delinquent and accruing	328	235
Commercial Banking | Total delinquency
Loan payment delinquencies
Total loans receivable	38,226	18,626
Commercial Banking | 30-59 days delinquent
Loan payment delinquencies
Total loans receivable	9,179	7,400
Commercial Banking | 60-89 days delinquent
Loan payment delinquencies
Total loans receivable	8,396	1,734
Commercial Banking | 90 days or greater delinquent
Loan payment delinquencies
Total loans receivable	20,651	9,492
Commercial Banking | Current
Loan payment delinquencies
Total loans receivable	4,842,940	4,614,113
Commercial Banking | Commercial real estate loans
Loan payment delinquencies
Total loans receivable	2,633,181	2,628,457
90 days or greater delinquent and accruing	0	225
Commercial Banking | Commercial real estate loans | Total delinquency
Loan payment delinquencies
Total loans receivable	19,729	9,576
Commercial Banking | Commercial real estate loans | 30-59 days delinquent
Loan payment delinquencies
Total loans receivable	5,919	2,010
Commercial Banking | Commercial real estate loans | 60-89 days delinquent
Loan payment delinquencies
Total loans receivable	7,643	1,031
Commercial Banking | Commercial real estate loans | 90 days or greater delinquent
Loan payment delinquencies
Total loans receivable	6,167	6,535
Commercial Banking | Commercial real estate loans | Current
Loan payment delinquencies
Total loans receivable	2,613,452	2,618,881
Commercial Banking | Commercial real estate loans - owner occupied
Loan payment delinquencies
Total loans receivable	361,198	345,553
90 days or greater delinquent and accruing	0	0
Commercial Banking | Commercial real estate loans - owner occupied | Total delinquency
Loan payment delinquencies
Total loans receivable	0	1,371
Commercial Banking | Commercial real estate loans - owner occupied | 30-59 days delinquent
Loan payment delinquencies
Total loans receivable	0	1,194
Commercial Banking | Commercial real estate loans - owner occupied | 60-89 days delinquent
Loan payment delinquencies
Total loans receivable	0	0
Commercial Banking | Commercial real estate loans - owner occupied | 90 days or greater delinquent
Loan payment delinquencies
Total loans receivable	0	177
Commercial Banking | Commercial real estate loans - owner occupied | Current
Loan payment delinquencies
Total loans receivable	361,198	344,182
Commercial Banking | Commercial loans
Loan payment delinquencies
Total loans receivable	1,886,787	1,658,729
90 days or greater delinquent and accruing	328	10
Commercial Banking | Commercial loans | Total delinquency
Loan payment delinquencies
Total loans receivable	18,497	7,679
Commercial Banking | Commercial loans | 30-59 days delinquent
Loan payment delinquencies
Total loans receivable	3,260	4,196
Commercial Banking | Commercial loans | 60-89 days delinquent
Loan payment delinquencies
Total loans receivable	753	703
Commercial Banking | Commercial loans | 90 days or greater delinquent
Loan payment delinquencies
Total loans receivable	14,484	2,780
Commercial Banking | Commercial loans | Current
Loan payment delinquencies
Total loans receivable	$ 1,868,290	$ 1,651,050

Loans Receivable - Credit Quali

Loans Receivable - Credit Quality Indicators (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2023
Credit quality indicators
Year one	$ 1,227,155		$ 1,227,155		$ 1,684,565
Year two	1,475,422		1,475,422		2,448,570
Year three	2,103,249		2,103,249		1,785,396
Year four	1,533,258		1,533,258		1,190,115
Year five	1,048,478		1,048,478		762,754
Prior	2,720,246		2,720,246		2,364,506
Revolving loans	1,115,617		1,115,617		1,099,359
Revolving loans converted to term loans	81,133		81,133		79,544
Total loans receivable, gross	11,304,558		11,304,558		11,414,809
Total loans receivable, charge-offs	(6,760)	$ (5,346)	(18,288)	$ (15,217)
Revolving loans converted to term loans during the period			13,000		19,000
Special mention and substandard | Minimum
Credit quality indicators
Total loans receivable, gross	1,000		1,000
Personal Banking
Credit quality indicators
Year one	523,367		523,367		947,432
Year two	778,252		778,252		1,463,153
Year three	1,236,341		1,236,341		1,303,418
Year four	1,122,689		1,122,689		788,790
Year five	687,691		687,691		408,938
Prior	1,488,853		1,488,853		1,294,629
Revolving loans	539,558		539,558		530,255
Revolving loans converted to term loans	46,641		46,641		45,455
Total loans receivable, gross	6,423,392		6,423,392		6,782,070
Total loans receivable, charge-offs	(4,705)	(3,576)	(12,902)	(10,233)
Personal Banking | Residential mortgage loans
Credit quality indicators
Year one	23,970		23,970		186,081
Year two	195,996		195,996		666,960
Year three	640,321		640,321		792,488
Year four	759,591		759,591		507,320
Year five	478,440		478,440		244,989
Prior	1,159,840		1,159,840		1,030,347
Revolving loans	0		0		0
Revolving loans converted to term loans	0		0		0
Total loans receivable, gross	3,258,158		3,258,158		3,428,185
Year one, charge-offs			0		0
Year two, charge-offs			0		(9)
Year three, charge-offs			(262)		(5)
Year four, charge-offs			0		(130)
Year five, charge-offs			(113)		(23)
Prior, charge-offs			(294)		(1,023)
Revolving loans, charge-offs			0		0
Revolving loans converted to term loans, charge-offs			0		0
Total loans receivable, charge-offs	(255)	(171)	(669)	(923)	(1,189)
Personal Banking | Residential mortgage loans | Pass
Credit quality indicators
Year one	23,970		23,970		186,081
Year two	195,945		195,945		665,379
Year three	638,920		638,920		792,488
Year four	759,324		759,324		506,068
Year five	478,181		478,181		244,678
Prior	1,150,387		1,150,387		1,019,152
Revolving loans	0		0		0
Revolving loans converted to term loans	0		0		0
Total loans receivable, gross	3,246,727		3,246,727		3,413,846
Personal Banking | Residential mortgage loans | Substandard
Credit quality indicators
Year one	0		0		0
Year two	51		51		1,581
Year three	1,401		1,401		0
Year four	267		267		1,252
Year five	259		259		311
Prior	9,453		9,453		11,195
Revolving loans	0		0		0
Revolving loans converted to term loans	0		0		0
Total loans receivable, gross	11,431		11,431		14,339
Personal Banking | Home equity loans
Credit quality indicators
Year one	22,491		22,491		71,497
Year two	61,170		61,170		100,875
Year three	89,735		89,735		106,097
Year four	92,923		92,923		146,318
Year five	129,434		129,434		94,179
Prior	250,207		250,207		198,992
Revolving loans	475,341		475,341		465,315
Revolving loans converted to term loans	45,901		45,901		44,585
Total loans receivable, gross	1,167,202		1,167,202		1,227,858
Year one, charge-offs			0		0
Year two, charge-offs			0		(53)
Year three, charge-offs			(41)		(46)
Year four, charge-offs			(2)		0
Year five, charge-offs			(197)		(48)
Prior, charge-offs			(411)		(352)
Revolving loans, charge-offs			(557)		(144)
Revolving loans converted to term loans, charge-offs			(331)		(209)
Total loans receivable, charge-offs	(890)	(320)	(1,539)	(719)	(852)
Personal Banking | Home equity loans | Pass
Credit quality indicators
Year one	22,491		22,491		71,497
Year two	61,170		61,170		100,639
Year three	89,615		89,615		106,043
Year four	92,832		92,832		146,121
Year five	129,272		129,272		94,144
Prior	248,594		248,594		197,259
Revolving loans	474,033		474,033		463,868
Revolving loans converted to term loans	44,944		44,944		43,526
Total loans receivable, gross	1,162,951		1,162,951		1,223,097
Personal Banking | Home equity loans | Substandard
Credit quality indicators
Year one	0		0		0
Year two	0		0		236
Year three	120		120		54
Year four	91		91		197
Year five	162		162		35
Prior	1,613		1,613		1,733
Revolving loans	1,308		1,308		1,447
Revolving loans converted to term loans	957		957		1,059
Total loans receivable, gross	4,251		4,251		4,761
Personal Banking | Vehicle loans
Credit quality indicators
Year one	454,094		454,094		665,522
Year two	504,283		504,283		683,693
Year three	498,834		498,834		399,262
Year four	266,828		266,828		133,074
Year five	78,820		78,820		68,409
Prior	72,088		72,088		58,641
Revolving loans	0		0		0
Revolving loans converted to term loans	0		0		0
Total loans receivable, gross	1,874,947		1,874,947		2,008,601
Year one, charge-offs			(78)		(678)
Year two, charge-offs			(1,705)		(1,844)
Year three, charge-offs			(1,974)		(1,967)
Year four, charge-offs			(1,644)		(475)
Year five, charge-offs			(323)		(652)
Prior, charge-offs			(854)		(853)
Revolving loans, charge-offs			0		0
Revolving loans converted to term loans, charge-offs			0		0
Total loans receivable, charge-offs	(2,064)	(1,524)	(6,578)	(4,731)	(6,468)
Personal Banking | Vehicle loans | Pass
Credit quality indicators
Year one	453,937		453,937		664,876
Year two	503,197		503,197		682,275
Year three	497,117		497,117		397,809
Year four	265,552		265,552		132,775
Year five	78,513		78,513		67,853
Prior	71,623		71,623		58,153
Revolving loans	0		0		0
Revolving loans converted to term loans	0		0		0
Total loans receivable, gross	1,869,939		1,869,939		2,003,741
Personal Banking | Vehicle loans | Substandard
Credit quality indicators
Year one	157		157		646
Year two	1,086		1,086		1,418
Year three	1,717		1,717		1,453
Year four	1,276		1,276		299
Year five	307		307		556
Prior	465		465		488
Revolving loans	0		0		0
Revolving loans converted to term loans	0		0		0
Total loans receivable, gross	5,008		5,008		4,860
Personal Banking | Consumer loans
Credit quality indicators
Year one	22,812		22,812		24,332
Year two	16,803		16,803		11,625
Year three	7,451		7,451		5,571
Year four	3,347		3,347		2,078
Year five	997		997		1,361
Prior	6,718		6,718		6,649
Revolving loans	64,217		64,217		64,940
Revolving loans converted to term loans	740		740		870
Total loans receivable, gross	123,085		123,085		117,426
Year one, charge-offs			(349)
Year one, charge-offs					(3,412)
Year two, charge-offs			(1,736)		(511)
Year three, charge-offs			(470)		(390)
Year four, charge-offs			(198)		(157)
Year five, charge-offs			(62)		(177)
Prior, charge-offs			(725)		(980)
Revolving loans, charge-offs			(543)		(317)
Revolving loans converted to term loans, charge-offs			(33)		(38)
Total loans receivable, charge-offs	(1,496)	(1,561)	(4,116)	(3,860)	(5,983)
Personal Banking | Consumer loans | Pass
Credit quality indicators
Year one	22,809		22,809		24,277
Year two	16,742		16,742		11,582
Year three	7,426		7,426		5,552
Year four	3,339		3,339		2,072
Year five	997		997		1,355
Prior	6,704		6,704		6,603
Revolving loans	63,495		63,495		64,214
Revolving loans converted to term loans	659		659		820
Total loans receivable, gross	122,171		122,171		116,475
Personal Banking | Consumer loans | Substandard
Credit quality indicators
Year one	3		3		55
Year two	61		61		43
Year three	25		25		19
Year four	8		8		6
Year five	0		0		6
Prior	14		14		46
Revolving loans	722		722		726
Revolving loans converted to term loans	81		81		50
Total loans receivable, gross	914		914		951
Commercial Banking
Credit quality indicators
Year one	703,788		703,788		737,133
Year two	697,170		697,170		985,417
Year three	866,908		866,908		481,978
Year four	410,569		410,569		401,325
Year five	360,787		360,787		353,816
Prior	1,231,393		1,231,393		1,069,877
Revolving loans	576,059		576,059		569,104
Revolving loans converted to term loans	34,492		34,492		34,089
Total loans receivable, gross	4,881,166		4,881,166		4,632,739
Total loans receivable, charge-offs	(2,055)	(1,770)	(5,386)	(4,984)
Commercial Banking | Commercial real estate loans
Credit quality indicators
Year one	133,296		133,296		228,074
Year two	252,041		252,041		496,247
Year three	540,980		540,980		358,594
Year four	328,884		328,884		356,152
Year five	329,498		329,498		269,479
Prior	998,811		998,811		866,626
Revolving loans	25,705		25,705		28,373
Revolving loans converted to term loans	23,966		23,966		24,912
Total loans receivable, gross	2,633,181		2,633,181		2,628,457
Year one, charge-offs			0		(14)
Year two, charge-offs			0		0
Year three, charge-offs			(44)		(492)
Year four, charge-offs			(360)		0
Year five, charge-offs			0		(51)
Prior, charge-offs			(920)		(1,741)
Revolving loans, charge-offs			0		0
Revolving loans converted to term loans, charge-offs			0		0
Total loans receivable, charge-offs	(475)	(484)	(1,324)	(1,556)	(2,298)
Commercial Banking | Commercial real estate loans | Pass
Credit quality indicators
Year one	133,296		133,296		223,335
Year two	240,845		240,845		470,762
Year three	481,825		481,825		303,873
Year four	261,936		261,936		332,620
Year five	293,395		293,395		228,382
Prior	871,032		871,032		745,244
Revolving loans	24,784		24,784		27,583
Revolving loans converted to term loans	23,890		23,890		24,804
Total loans receivable, gross	2,331,003		2,331,003		2,356,603
Commercial Banking | Commercial real estate loans | Special mention
Credit quality indicators
Year one	0		0		2,819
Year two	4,294		4,294		24,735
Year three	17,645		17,645		27,871
Year four	18,323		18,323		5,365
Year five	14,570		14,570		4,053
Prior	15,376		15,376		38,665
Revolving loans	746		746		711
Revolving loans converted to term loans	0		0		0
Total loans receivable, gross	70,954		70,954		104,219
Commercial Banking | Commercial real estate loans | Substandard
Credit quality indicators
Year one	0		0		1,920
Year two	6,902		6,902		750
Year three	41,510		41,510		26,850
Year four	48,625		48,625		18,167
Year five	21,533		21,533		37,044
Prior	112,403		112,403		82,717
Revolving loans	175		175		79
Revolving loans converted to term loans	76		76		108
Total loans receivable, gross	231,224		231,224		167,635
Commercial Banking | Commercial real estate loans - owner occupied
Credit quality indicators
Year one	52,440		52,440		25,946
Year two	28,048		28,048		52,106
Year three	36,710		36,710		48,991
Year four	47,395		47,395		17,650
Year five	16,733		16,733		47,646
Prior	174,420		174,420		147,768
Revolving loans	2,742		2,742		2,378
Revolving loans converted to term loans	2,710		2,710		3,068
Total loans receivable, gross	361,198		361,198		345,553
Year one, charge-offs			0		0
Year two, charge-offs			0		0
Year three, charge-offs			0		0
Year four, charge-offs			0		0
Year five, charge-offs			0		0
Prior, charge-offs			0		(68)
Revolving loans, charge-offs			0		0
Revolving loans converted to term loans, charge-offs			0		0
Total loans receivable, charge-offs	0	0	0	(68)	(68)
Commercial Banking | Commercial real estate loans - owner occupied | Pass
Credit quality indicators
Year one	52,440		52,440		24,725
Year two	13,999		13,999		51,986
Year three	28,641		28,641		47,655
Year four	46,102		46,102		15,984
Year five	12,138		12,138		28,614
Prior	148,673		148,673		140,175
Revolving loans	1,991		1,991		2,378
Revolving loans converted to term loans	0		0		2,390
Total loans receivable, gross	303,984		303,984		313,907
Commercial Banking | Commercial real estate loans - owner occupied | Special mention
Credit quality indicators
Year one	0		0		1,221
Year two	1,184		1,184		120
Year three	7,194		7,194		1,218
Year four	1,293		1,293		0
Year five	0		0		14,386
Prior	7,068		7,068		2,952
Revolving loans	0		0		0
Revolving loans converted to term loans	0		0		0
Total loans receivable, gross	16,739		16,739		19,897
Commercial Banking | Commercial real estate loans - owner occupied | Substandard
Credit quality indicators
Year one	0		0		0
Year two	12,865		12,865		0
Year three	875		875		118
Year four	0		0		1,666
Year five	4,595		4,595		4,646
Prior	18,679		18,679		4,641
Revolving loans	751		751		0
Revolving loans converted to term loans	2,710		2,710		678
Total loans receivable, gross	40,475		40,475		11,749
Commercial Banking | Commercial loans
Credit quality indicators
Year one	518,052		518,052		483,113
Year two	417,081		417,081		437,064
Year three	289,218		289,218		74,393
Year four	34,290		34,290		27,523
Year five	14,556		14,556		36,691
Prior	58,162		58,162		55,483
Revolving loans	547,612		547,612		538,353
Revolving loans converted to term loans	7,816		7,816		6,109
Total loans receivable, gross	1,886,787		1,886,787		1,658,729
Year one, charge-offs			0		(35)
Year two, charge-offs			(170)		(2,072)
Year three, charge-offs			(2,777)		(517)
Year four, charge-offs			(115)		(430)
Year five, charge-offs			(226)		(205)
Prior, charge-offs			(627)		(845)
Revolving loans, charge-offs			(119)		(60)
Revolving loans converted to term loans, charge-offs			(28)		(2)
Total loans receivable, charge-offs	(1,580)	$ (1,286)	(4,062)	$ (3,360)	(4,166)
Commercial Banking | Commercial loans | Pass
Credit quality indicators
Year one	510,269		510,269		482,605
Year two	380,280		380,280		430,378
Year three	279,532		279,532		73,469
Year four	32,637		32,637		26,868
Year five	14,137		14,137		34,090
Prior	56,373		56,373		54,617
Revolving loans	531,611		531,611		531,742
Revolving loans converted to term loans	3,594		3,594		4,110
Total loans receivable, gross	1,808,433		1,808,433		1,637,879
Commercial Banking | Commercial loans | Special mention
Credit quality indicators
Year one	7,434		7,434		508
Year two	26,726		26,726		3,671
Year three	4,180		4,180		52
Year four	652		652		299
Year five	271		271		240
Prior	100		100		26
Revolving loans	11,255		11,255		1,882
Revolving loans converted to term loans	1,096		1,096		0
Total loans receivable, gross	51,714		51,714		6,678
Commercial Banking | Commercial loans | Substandard
Credit quality indicators
Year one	349		349		0
Year two	10,075		10,075		3,015
Year three	5,506		5,506		872
Year four	1,001		1,001		356
Year five	148		148		2,361
Prior	1,689		1,689		840
Revolving loans	4,746		4,746		4,729
Revolving loans converted to term loans	3,126		3,126		1,999
Total loans receivable, gross	$ 26,640		$ 26,640		$ 14,172

Goodwill and Other Intangible_3

Goodwill and Other Intangible Assets - Intangible Assets (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2023
Amortizable intangible assets:
Intangible asset - net	$ 3,363		$ 3,363		$ 5,290
Estimated amortization expense
Amortization expense	590	$ 795	1,926	$ 2,546
For the year ending December 31, 2024	2,452		2,452
For the year ending December 31, 2025	1,662		1,662
For the year ending December 31, 2026	871		871
For the year ending December 31, 2027	304		304
Core Deposits
Amortizable intangible assets:
Intangible asset - gross	74,899		74,899		74,899
Less: accumulated amortization	(71,536)		(71,536)		(69,609)
Intangible asset - net	$ 3,363		$ 3,363		$ 5,290

Goodwill and Other Intangible_4

Goodwill and Other Intangible Assets - Changes in the Carrying Amount of Goodwill (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Sep. 30, 2024	Dec. 31, 2023
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill		$ 380,997	$ 380,997
Goodwill impairment	$ 0

Borrowed Funds - Schedule of Bo

Borrowed Funds - Schedule of Borrowed Funds (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Debt Instrument [Line Items]
Borrowed funds	$ 204,374	$ 398,895
Collateralized borrowings, due within one year
Debt Instrument [Line Items]
Borrowed funds	$ 21,624	$ 35,495
Average rate	1.59%	1.72%
Collateral received, due within one year
Debt Instrument [Line Items]
Borrowed funds	$ 7,750	$ 24,900
Average rate	5.72%	5.26%
Federal Home Loan Bank of Pittsburgh | Term notes payable to the FHLB of Pittsburgh, due within one year
Debt Instrument [Line Items]
Borrowed funds	$ 175,000	$ 175,000
Average rate	5.15%	5.71%
Federal Home Loan Bank of Pittsburgh | Notes payable to the FHLB of Pittsburgh, due within one year
Debt Instrument [Line Items]
Borrowed funds	$ 0	$ 163,500
Average rate	0%	5.70%

Borrowed Funds - Narrative (Det

Borrowed Funds - Narrative (Details)		9 Months Ended
	Sep. 09, 2020 USD ($)	Sep. 30, 2024 USD ($) advance business_trust	Sep. 30, 2023 USD ($)	Dec. 31, 2023 USD ($)
Debt Instrument [Line Items]
Total loans receivable, net		$ 11,178,745,000		$ 11,289,566,000
Borrowed funds		204,374,000		398,895,000
Subordinated debt		$ 114,451,000		114,189,000
Number of statutory business trusts owned | business_trust		7
Trust Preferred Investments
Debt Instrument [Line Items]
Interest paid, net		$ 7,000,000	$ 7,000,000
Maximum period for which interest payment on the subordinated debentures can be deferred (in years)		5 years
Interest deferral		$ 0
Collateralized borrowings, due within one year
Debt Instrument [Line Items]
Borrowed funds		21,624,000		35,495,000
Cash and securities collateral		37,000,000
Collateral received, due within one year
Debt Instrument [Line Items]
Borrowed funds		7,750,000		24,900,000
Subordinated debt
Debt Instrument [Line Items]
Debt issued	$ 125,000,000
Stated rate (as a percent)	4%
Interest rate	3.89%
Repurchase amount				10,000,000
Amount outstanding after repurchase				115,000,000
Debt issuance costs	$ 2,000,000
Debt issuance amortization period (in years)	5 years
Interest paid, net		$ 4,000,000	$ 4,000,000
Federal Home Loan Bank of Pittsburgh
Debt Instrument [Line Items]
Number of advances | advance		7
Federal Home Loan Bank of Pittsburgh | Revolving line of credit, FHLB of Pittsburgh
Debt Instrument [Line Items]
Maximum borrowing capacity		$ 250,000,000
Revolving line of credit		0		164,000,000
Federal Home Loan Bank of Pittsburgh | Term notes payable to the FHLB of Pittsburgh, due within one year
Debt Instrument [Line Items]
Borrowed funds		175,000,000		$ 175,000,000
Federal Home Loan Bank of Pittsburgh | Term notes payable to the FHLB of Pittsburgh, due within one year | Debt Instrument, Redemption, Period One
Debt Instrument [Line Items]
Debt issued		$ 25,000,000
Stated rate (as a percent)		5.15%
Federal Home Loan Bank of Pittsburgh | Term notes payable to the FHLB of Pittsburgh, due within one year | Debt Instrument, Redemption, Period Two
Debt Instrument [Line Items]
Debt issued		$ 25,000,000
Stated rate (as a percent)		5.09%
Federal Home Loan Bank of Pittsburgh | Term notes payable to the FHLB of Pittsburgh, due within one year | Debt Instrument, Redemption, Period Three
Debt Instrument [Line Items]
Debt issued		$ 25,000,000
Stated rate (as a percent)		5.15%
Federal Home Loan Bank of Pittsburgh | Term notes payable to the FHLB of Pittsburgh, due within one year | Debt Instrument, Redemption, Period Four
Debt Instrument [Line Items]
Debt issued		$ 25,000,000
Stated rate (as a percent)		5.16%
Federal Home Loan Bank of Pittsburgh | Term notes payable to the FHLB of Pittsburgh, due within one year | Debt Instrument, Redemption, Period Five
Debt Instrument [Line Items]
Debt issued		$ 25,000,000
Stated rate (as a percent)		5.16%
Federal Home Loan Bank of Pittsburgh | Term notes payable to the FHLB of Pittsburgh, due within one year | Debt Instrument, Redemption, Period Six
Debt Instrument [Line Items]
Debt issued		$ 25,000,000
Stated rate (as a percent)		5.17%
Federal Home Loan Bank of Pittsburgh | Term notes payable to the FHLB of Pittsburgh, due within one year | Debt Instrument, Redemption, Period Seven
Debt Instrument [Line Items]
Debt issued		$ 25,000,000
Stated rate (as a percent)		5.14%
Federal Home Loan Bank of Pittsburgh | Residential First Mortgage and Other Loans
Debt Instrument [Line Items]
Total loans receivable, net		$ 5,800,000,000

Borrowed Funds - Capital Debt S

Borrowed Funds - Capital Debt Securities (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2024	Dec. 31, 2023
Debt Instrument [Line Items]
Junior subordinated debentures	$ 129,769	$ 129,574
Trust Preferred Investments
Debt Instrument [Line Items]
Capital debt securities	128,875
Junior subordinated debentures	$ 129,769	129,574
Trust Preferred Investments | Northwest Bancorp Capital Trust III
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)	1.38%
Capital debt securities	$ 50,000
Junior subordinated debentures	$ 51,547	51,547
Trust Preferred Investments | Northwest Bancorp Statutory Trust IV
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)	1.38%
Capital debt securities	$ 50,000
Junior subordinated debentures	$ 51,547	51,547
Trust Preferred Investments | LNB Trust II
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)	1.48%
Capital debt securities	$ 7,875
Junior subordinated debentures	$ 8,119	8,119
Trust Preferred Investments | Union National Capital Trust I
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)	2.85%
Capital debt securities	$ 8,000
Junior subordinated debentures	$ 8,018	7,999
Trust Preferred Investments | Union National Capital Trust II
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)	2%
Capital debt securities	$ 3,000
Junior subordinated debentures	$ 2,816	2,796
Trust Preferred Investments | MFBC Statutory Trust I
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)	1.70%
Capital debt securities	$ 5,000
Junior subordinated debentures	$ 3,865	3,788
Trust Preferred Investments | Universal Preferred Trust
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)	1.69%
Capital debt securities	$ 5,000
Junior subordinated debentures	$ 3,857	$ 3,778

Guarantees (Details)

Guarantees (Details) $ in Millions	Sep. 30, 2024 USD ($)
Private Label Credit Card Facilities
Guarantor Obligations [Line Items]
Credit limit	$ 20
Private Label Credit Card Facilities | Credit Cards Issued
Guarantor Obligations [Line Items]
Credit limit	11
Outstanding balance	2
Standby Letters of Credit
Guarantor Obligations [Line Items]
Maximum potential amount of future payments	58
Maximum exposure collateralized	41
Liability recognized for the obligations	$ 1

Earnings Per Share - Computatio

Earnings Per Share - Computation of Basic and Diluted Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Earnings Per Share [Abstract]
Net income - treasury stock method - Basic and Diluted	$ 33,618	$ 39,220	$ 67,528	$ 105,943
Less: Dividends and undistributed earnings allocated to participating securities	43	99	86	267
Net income available to common shareholders - two class method - Basic	33,575	39,121	67,442	105,676
Net income available to common shareholders - two class method -Diluted	$ 33,575	$ 39,121	$ 67,442	$ 105,676
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Basic earnings per share (in dollars per share)	$ 0.26	$ 0.31	$ 0.53	$ 0.83
Diluted earnings per share (in dollars per share)	$ 0.26	$ 0.31	$ 0.53	$ 0.83
Anti-dilutive awards (in shares)	2,195	2,832	2,369	2,832
Earnings Per Share, Treasury Stock Method
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Weighted average common shares outstanding, basic (in shares)	127,206,579	126,767,507	127,015,478	126,629,786
Add: Shares adjustment (in shares)	507,932	234,139	553,536	373,605
Total weighted average common shares, diluted (in shares)	127,714,511	127,001,646	127,569,014	127,003,391
Earnings Per Share, Two-Class Method
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Weighted average common shares outstanding, basic (in shares)	127,206,579	126,767,507	127,015,478	126,629,786
Add: Shares adjustment (in shares)	162,943	320,177	162,943	320,177
Total weighted average common shares, diluted (in shares)	127,369,522	127,087,684	127,178,421	126,949,963

Pension and Other Post-Retire_3

Pension and Other Post-Retirement Benefits (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Pension benefits
Components of net periodic benefit cost
Service cost	$ 1,425	$ 1,560	$ 4,275	$ 4,680
Interest cost	2,205	2,245	6,615	6,735
Expected return on plan assets	(3,776)	(3,479)	(11,328)	(10,437)
Amortization of prior service cost	(563)	(564)	(1,689)	(1,692)
Amortization of the net loss	18	20	54	60
Net periodic cost	(691)	(218)	(2,073)	(654)
Other post-retirement benefits
Components of net periodic benefit cost
Service cost	0	0	0	0
Interest cost	15	7	45	21
Expected return on plan assets	0	0	0	0
Amortization of prior service cost	0	0	0	0
Amortization of the net loss	10	10	30	30
Net periodic cost	$ 25	$ 17	$ 75	$ 51

Disclosures About Fair Value _3

Disclosures About Fair Value of Financial Instruments - Narrative (Details) - USD ($) $ in Millions	9 Months Ended	12 Months Ended
	Sep. 30, 2024	Dec. 31, 2023
Fair Value Disclosures [Abstract]
Significant unrealized appreciation or depreciation in financial instruments	$ 0	$ 0

Disclosures About Fair Value _4

Disclosures About Fair Value of Financial Instruments - Carrying Amount and Estimated Fair Value of Financial Instruments (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Financial assets:
Securities held-to-maturity	$ 672,641	$ 699,506
Accrued interest receivable	46,678	47,353
Financial liabilities:
Subordinated debt	114,451	114,189
Junior subordinated debentures	129,769	129,574
Derivatives Not Designated as Hedging Instruments
Financial assets:
Derivative assets	32,645	42,772
Financial liabilities:
Derivative liabilities	34,231	42,940
Level 1
Financial assets:
Cash and cash equivalents	226,883	122,260
Securities available-for-sale	0	0
Securities held-to-maturity	0	0
Loans receivable, net	0	0
Loans held-for-sale	0	0
Accrued interest receivable	46,678	47,353
FHLB stock	0	0
Total financial assets	273,561	169,613
Financial liabilities:
Savings and checking deposits	9,361,030	9,377,021
Time deposits	0	0
Borrowed funds	194,912	386,446
Subordinated debt	0	0
Junior subordinated debentures	0	0
Accrued interest payable	15,125	13,669
Total financial liabilities	9,571,067	9,777,136
Level 1 | Interest rate lock commitments
Financial assets:
Derivative assets	0	0
Level 1 | Forward commitments
Financial assets:
Derivative assets	0	0
Level 1 | Foreign exchange swap agreements
Financial assets:
Derivative assets	0
Financial liabilities:
Derivative liabilities	0	0
Level 1 | Interest rate swap agreements | Derivatives Designated as Hedging Instruments
Financial assets:
Derivative assets	0	0
Financial liabilities:
Derivative liabilities	0	0
Level 1 | Interest rate swap agreements | Derivatives Not Designated as Hedging Instruments
Financial assets:
Derivative assets	0	0
Financial liabilities:
Derivative liabilities	0	0
Level 1 | Risk participation agreements
Financial liabilities:
Derivative liabilities	0	0
Level 2
Financial assets:
Cash and cash equivalents	0	0
Securities available-for-sale	1,111,868	1,043,359
Securities held-to-maturity	672,641	699,506
Loans receivable, net	0	0
Loans held-for-sale	0	0
Accrued interest receivable	0	0
FHLB stock	0	0
Total financial assets	1,816,481	1,784,996
Financial liabilities:
Savings and checking deposits	0	0
Time deposits	0	0
Borrowed funds	0	0
Subordinated debt	107,555	109,471
Junior subordinated debentures	0	0
Accrued interest payable	0	0
Total financial liabilities	141,786	152,411
Level 2 | Interest rate lock commitments
Financial assets:
Derivative assets	0	0
Level 2 | Forward commitments
Financial assets:
Derivative assets	115	12
Level 2 | Foreign exchange swap agreements
Financial assets:
Derivative assets	6
Financial liabilities:
Derivative liabilities	173	291
Level 2 | Interest rate swap agreements | Derivatives Designated as Hedging Instruments
Financial assets:
Derivative assets	90	713
Financial liabilities:
Derivative liabilities	2,085	1,198
Level 2 | Interest rate swap agreements | Derivatives Not Designated as Hedging Instruments
Financial assets:
Derivative assets	31,761	41,406
Financial liabilities:
Derivative liabilities	31,924	41,437
Level 2 | Risk participation agreements
Financial liabilities:
Derivative liabilities	49	14
Level 3
Financial assets:
Cash and cash equivalents	0	0
Securities available-for-sale	0	0
Securities held-to-maturity	0	0
Loans receivable, net	10,494,023	10,274,593
Loans held-for-sale	9,370	8,768
Accrued interest receivable	0	0
FHLB stock	0	0
Total financial assets	10,504,066	10,284,002
Financial liabilities:
Savings and checking deposits	0	0
Time deposits	2,492,832	2,113,177
Borrowed funds	0	0
Subordinated debt	0	0
Junior subordinated debentures	120,054	112,159
Accrued interest payable	0	0
Total financial liabilities	2,612,886	2,225,336
Level 3 | Interest rate lock commitments
Financial assets:
Derivative assets	673	641
Level 3 | Forward commitments
Financial assets:
Derivative assets	0	0
Level 3 | Foreign exchange swap agreements
Financial assets:
Derivative assets	0
Financial liabilities:
Derivative liabilities	0	0
Level 3 | Interest rate swap agreements | Derivatives Designated as Hedging Instruments
Financial assets:
Derivative assets	0	0
Financial liabilities:
Derivative liabilities	0	0
Level 3 | Interest rate swap agreements | Derivatives Not Designated as Hedging Instruments
Financial assets:
Derivative assets	0	0
Financial liabilities:
Derivative liabilities	0	0
Level 3 | Risk participation agreements
Financial liabilities:
Derivative liabilities	0	0
Carrying amount
Financial assets:
Cash and cash equivalents	226,883	122,260
Securities available-for-sale	1,111,868	1,043,359
Securities held-to-maturity	766,772	814,839
Loans receivable, net	11,169,375	11,280,798
Loans held-for-sale	9,370	8,768
Accrued interest receivable	46,678	47,353
FHLB stock	21,223	30,146
Total financial assets	13,384,814	13,390,295
Financial liabilities:
Savings and checking deposits	9,361,030	9,377,021
Time deposits	2,710,049	2,602,881
Borrowed funds	204,374	398,895
Subordinated debt	114,451	114,189
Junior subordinated debentures	129,769	129,574
Accrued interest payable	15,125	13,669
Total financial liabilities	12,569,029	12,679,169
Carrying amount | Interest rate lock commitments
Financial assets:
Derivative assets	673	641
Carrying amount | Forward commitments
Financial assets:
Derivative assets	115	12
Carrying amount | Foreign exchange swap agreements
Financial assets:
Derivative assets	6
Financial liabilities:
Derivative liabilities	173	291
Carrying amount | Interest rate swap agreements | Derivatives Designated as Hedging Instruments
Financial assets:
Derivative assets	90	713
Financial liabilities:
Derivative liabilities	2,085	1,198
Carrying amount | Interest rate swap agreements | Derivatives Not Designated as Hedging Instruments
Financial assets:
Derivative assets	31,761	41,406
Financial liabilities:
Derivative liabilities	31,924	41,437
Carrying amount | Risk participation agreements
Financial liabilities:
Derivative liabilities	49	14
Estimated fair value
Financial assets:
Cash and cash equivalents	226,883	122,260
Securities available-for-sale	1,111,868	1,043,359
Securities held-to-maturity	672,641	699,506
Loans receivable, net	10,494,023	10,274,593
Loans held-for-sale	9,370	8,768
Accrued interest receivable	46,678	47,353
FHLB stock	21,223	30,146
Total financial assets	12,615,331	12,268,757
Financial liabilities:
Savings and checking deposits	9,361,030	9,377,021
Time deposits	2,492,832	2,113,177
Borrowed funds	194,912	386,446
Subordinated debt	107,555	109,471
Junior subordinated debentures	120,054	112,159
Accrued interest payable	15,125	13,669
Total financial liabilities	12,325,739	12,154,883
Estimated fair value | Interest rate lock commitments
Financial assets:
Derivative assets	673	641
Estimated fair value | Forward commitments
Financial assets:
Derivative assets	115	12
Estimated fair value | Foreign exchange swap agreements
Financial assets:
Derivative assets	6
Financial liabilities:
Derivative liabilities	173	291
Estimated fair value | Interest rate swap agreements | Derivatives Designated as Hedging Instruments
Financial assets:
Derivative assets	90	713
Financial liabilities:
Derivative liabilities	2,085	1,198
Estimated fair value | Interest rate swap agreements | Derivatives Not Designated as Hedging Instruments
Financial assets:
Derivative assets	31,761	41,406
Financial liabilities:
Derivative liabilities	31,924	41,437
Estimated fair value | Risk participation agreements
Financial liabilities:
Derivative liabilities	$ 49	$ 14

Disclosures About Fair Value _5

Disclosures About Fair Value of Financial Instruments - Assets and Liabilities Measured at Fair Value on a Recurring Basis (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Interest rate swaps not designated as hedging instruments
Assets and liabilities measured at fair value on a recurring basis
Derivative assets	$ 32,645	$ 42,772
Derivative liabilities	34,231	42,940
Level 1
Assets and liabilities measured at fair value on a recurring basis
Total debt securities	0	0
Total financial assets	273,561	169,613
Level 1 | Interest rate lock commitments
Assets and liabilities measured at fair value on a recurring basis
Derivative assets	0	0
Level 1 | Forward commitments
Assets and liabilities measured at fair value on a recurring basis
Derivative assets	0	0
Level 1 | Foreign exchange swap agreements
Assets and liabilities measured at fair value on a recurring basis
Derivative assets	0
Derivative liabilities	0	0
Level 1 | Interest rate swap agreements | Interest rate swaps designated as hedging instruments
Assets and liabilities measured at fair value on a recurring basis
Derivative assets	0	0
Derivative liabilities	0	0
Level 1 | Interest rate swap agreements | Interest rate swaps not designated as hedging instruments
Assets and liabilities measured at fair value on a recurring basis
Derivative assets	0	0
Derivative liabilities	0	0
Level 1 | Risk participation agreements
Assets and liabilities measured at fair value on a recurring basis
Derivative liabilities	0	0
Level 2
Assets and liabilities measured at fair value on a recurring basis
Total debt securities	1,111,868	1,043,359
Total financial assets	1,816,481	1,784,996
Level 2 | Interest rate lock commitments
Assets and liabilities measured at fair value on a recurring basis
Derivative assets	0	0
Level 2 | Forward commitments
Assets and liabilities measured at fair value on a recurring basis
Derivative assets	115	12
Level 2 | Foreign exchange swap agreements
Assets and liabilities measured at fair value on a recurring basis
Derivative assets	6
Derivative liabilities	173	291
Level 2 | Interest rate swap agreements | Interest rate swaps designated as hedging instruments
Assets and liabilities measured at fair value on a recurring basis
Derivative assets	90	713
Derivative liabilities	2,085	1,198
Level 2 | Interest rate swap agreements | Interest rate swaps not designated as hedging instruments
Assets and liabilities measured at fair value on a recurring basis
Derivative assets	31,761	41,406
Derivative liabilities	31,924	41,437
Level 2 | Risk participation agreements
Assets and liabilities measured at fair value on a recurring basis
Derivative liabilities	49	14
Level 3
Assets and liabilities measured at fair value on a recurring basis
Total debt securities	0	0
Total financial assets	10,504,066	10,284,002
Level 3 | Interest rate lock commitments
Assets and liabilities measured at fair value on a recurring basis
Derivative assets	673	641
Level 3 | Forward commitments
Assets and liabilities measured at fair value on a recurring basis
Derivative assets	0	0
Level 3 | Foreign exchange swap agreements
Assets and liabilities measured at fair value on a recurring basis
Derivative assets	0
Derivative liabilities	0	0
Level 3 | Interest rate swap agreements | Interest rate swaps designated as hedging instruments
Assets and liabilities measured at fair value on a recurring basis
Derivative assets	0	0
Derivative liabilities	0	0
Level 3 | Interest rate swap agreements | Interest rate swaps not designated as hedging instruments
Assets and liabilities measured at fair value on a recurring basis
Derivative assets	0	0
Derivative liabilities	0	0
Level 3 | Risk participation agreements
Assets and liabilities measured at fair value on a recurring basis
Derivative liabilities	0	0
Recurring
Assets and liabilities measured at fair value on a recurring basis
Total debt securities	123,848	182,068
Total mortgage-backed securities	988,020	861,291
Total financial assets	1,144,513	1,086,131
Total liabilities	34,231	42,940
Recurring | U.S. government and agencies
Assets and liabilities measured at fair value on a recurring basis
Total debt securities	37,795	58,314
Recurring | Government-sponsored enterprises
Assets and liabilities measured at fair value on a recurring basis
Total debt securities	132	40,597
Recurring | States and political subdivisions
Assets and liabilities measured at fair value on a recurring basis
Total debt securities	61,085	75,469
Recurring | Corporate
Assets and liabilities measured at fair value on a recurring basis
Total debt securities	24,836	7,688
Recurring | Mortgage-backed securities | GNMA
Assets and liabilities measured at fair value on a recurring basis
Total mortgage-backed securities	55,677	17,441
Recurring | Mortgage-backed securities | FNMA
Assets and liabilities measured at fair value on a recurring basis
Total mortgage-backed securities	65,222	102,678
Recurring | Mortgage-backed securities | FHLMC
Assets and liabilities measured at fair value on a recurring basis
Total mortgage-backed securities	95,913	70,830
Recurring | Mortgage-backed securities | Non-agency
Assets and liabilities measured at fair value on a recurring basis
Total mortgage-backed securities	4	5
Recurring | Collateralized mortgage obligations | GNMA
Assets and liabilities measured at fair value on a recurring basis
Total mortgage-backed securities	558,360	331,784
Recurring | Collateralized mortgage obligations | FNMA
Assets and liabilities measured at fair value on a recurring basis
Total mortgage-backed securities	78,304	148,892
Recurring | Collateralized mortgage obligations | FHLMC
Assets and liabilities measured at fair value on a recurring basis
Total mortgage-backed securities	134,540	189,661
Recurring | Interest rate lock commitments
Assets and liabilities measured at fair value on a recurring basis
Derivative assets	673	641
Recurring | Forward commitments
Assets and liabilities measured at fair value on a recurring basis
Derivative assets	115	12
Recurring | Foreign exchange swap agreements
Assets and liabilities measured at fair value on a recurring basis
Derivative assets	6
Derivative liabilities	173	291
Recurring | Interest rate swap agreements | Interest rate swaps designated as hedging instruments
Assets and liabilities measured at fair value on a recurring basis
Derivative assets	90	713
Derivative liabilities	2,085	1,198
Recurring | Interest rate swap agreements | Interest rate swaps not designated as hedging instruments
Assets and liabilities measured at fair value on a recurring basis
Derivative assets	31,761	41,406
Derivative liabilities	31,924	41,437
Recurring | Risk participation agreements
Assets and liabilities measured at fair value on a recurring basis
Derivative liabilities	49	14
Recurring | Level 1
Assets and liabilities measured at fair value on a recurring basis
Total debt securities	0	0
Total mortgage-backed securities	0	0
Total financial assets	0	0
Total liabilities	0	0
Recurring | Level 1 | U.S. government and agencies
Assets and liabilities measured at fair value on a recurring basis
Total debt securities	0	0
Recurring | Level 1 | Government-sponsored enterprises
Assets and liabilities measured at fair value on a recurring basis
Total debt securities	0	0
Recurring | Level 1 | States and political subdivisions
Assets and liabilities measured at fair value on a recurring basis
Total debt securities	0	0
Recurring | Level 1 | Corporate
Assets and liabilities measured at fair value on a recurring basis
Total debt securities	0	0
Recurring | Level 1 | Mortgage-backed securities | GNMA
Assets and liabilities measured at fair value on a recurring basis
Total mortgage-backed securities	0	0
Recurring | Level 1 | Mortgage-backed securities | FNMA
Assets and liabilities measured at fair value on a recurring basis
Total mortgage-backed securities	0	0
Recurring | Level 1 | Mortgage-backed securities | FHLMC
Assets and liabilities measured at fair value on a recurring basis
Total mortgage-backed securities	0	0
Recurring | Level 1 | Mortgage-backed securities | Non-agency
Assets and liabilities measured at fair value on a recurring basis
Total mortgage-backed securities	0	0
Recurring | Level 1 | Collateralized mortgage obligations | GNMA
Assets and liabilities measured at fair value on a recurring basis
Total mortgage-backed securities	0	0
Recurring | Level 1 | Collateralized mortgage obligations | FNMA
Assets and liabilities measured at fair value on a recurring basis
Total mortgage-backed securities	0	0
Recurring | Level 1 | Collateralized mortgage obligations | FHLMC
Assets and liabilities measured at fair value on a recurring basis
Total mortgage-backed securities	0	0
Recurring | Level 1 | Interest rate lock commitments
Assets and liabilities measured at fair value on a recurring basis
Derivative assets	0	0
Recurring | Level 1 | Forward commitments
Assets and liabilities measured at fair value on a recurring basis
Derivative assets	0	0
Recurring | Level 1 | Foreign exchange swap agreements
Assets and liabilities measured at fair value on a recurring basis
Derivative assets	0
Derivative liabilities	0	0
Recurring | Level 1 | Interest rate swap agreements | Interest rate swaps designated as hedging instruments
Assets and liabilities measured at fair value on a recurring basis
Derivative assets	0	0
Derivative liabilities	0	0
Recurring | Level 1 | Interest rate swap agreements | Interest rate swaps not designated as hedging instruments
Assets and liabilities measured at fair value on a recurring basis
Derivative assets	0	0
Derivative liabilities	0	0
Recurring | Level 1 | Risk participation agreements
Assets and liabilities measured at fair value on a recurring basis
Derivative liabilities	0	0
Recurring | Level 2
Assets and liabilities measured at fair value on a recurring basis
Total debt securities	123,848	182,068
Total mortgage-backed securities	988,020	861,291
Total financial assets	1,143,840	1,085,490
Total liabilities	34,231	42,940
Recurring | Level 2 | U.S. government and agencies
Assets and liabilities measured at fair value on a recurring basis
Total debt securities	37,795	58,314
Recurring | Level 2 | Government-sponsored enterprises
Assets and liabilities measured at fair value on a recurring basis
Total debt securities	132	40,597
Recurring | Level 2 | States and political subdivisions
Assets and liabilities measured at fair value on a recurring basis
Total debt securities	61,085	75,469
Recurring | Level 2 | Corporate
Assets and liabilities measured at fair value on a recurring basis
Total debt securities	24,836	7,688
Recurring | Level 2 | Mortgage-backed securities | GNMA
Assets and liabilities measured at fair value on a recurring basis
Total mortgage-backed securities	55,677	17,441
Recurring | Level 2 | Mortgage-backed securities | FNMA
Assets and liabilities measured at fair value on a recurring basis
Total mortgage-backed securities	65,222	102,678
Recurring | Level 2 | Mortgage-backed securities | FHLMC
Assets and liabilities measured at fair value on a recurring basis
Total mortgage-backed securities	95,913	70,830
Recurring | Level 2 | Mortgage-backed securities | Non-agency
Assets and liabilities measured at fair value on a recurring basis
Total mortgage-backed securities	4	5
Recurring | Level 2 | Collateralized mortgage obligations | GNMA
Assets and liabilities measured at fair value on a recurring basis
Total mortgage-backed securities	558,360	331,784
Recurring | Level 2 | Collateralized mortgage obligations | FNMA
Assets and liabilities measured at fair value on a recurring basis
Total mortgage-backed securities	78,304	148,892
Recurring | Level 2 | Collateralized mortgage obligations | FHLMC
Assets and liabilities measured at fair value on a recurring basis
Total mortgage-backed securities	134,540	189,661
Recurring | Level 2 | Interest rate lock commitments
Assets and liabilities measured at fair value on a recurring basis
Derivative assets	0	0
Recurring | Level 2 | Forward commitments
Assets and liabilities measured at fair value on a recurring basis
Derivative assets	115	12
Recurring | Level 2 | Foreign exchange swap agreements
Assets and liabilities measured at fair value on a recurring basis
Derivative assets	6
Derivative liabilities	173	291
Recurring | Level 2 | Interest rate swap agreements | Interest rate swaps designated as hedging instruments
Assets and liabilities measured at fair value on a recurring basis
Derivative assets	90	713
Derivative liabilities	2,085	1,198
Recurring | Level 2 | Interest rate swap agreements | Interest rate swaps not designated as hedging instruments
Assets and liabilities measured at fair value on a recurring basis
Derivative assets	31,761	41,406
Derivative liabilities	31,924	41,437
Recurring | Level 2 | Risk participation agreements
Assets and liabilities measured at fair value on a recurring basis
Derivative liabilities	49	14
Recurring | Level 3
Assets and liabilities measured at fair value on a recurring basis
Total debt securities	0	0
Total mortgage-backed securities	0	0
Total financial assets	673	641
Total liabilities	0	0
Recurring | Level 3 | U.S. government and agencies
Assets and liabilities measured at fair value on a recurring basis
Total debt securities	0	0
Recurring | Level 3 | Government-sponsored enterprises
Assets and liabilities measured at fair value on a recurring basis
Total debt securities	0	0
Recurring | Level 3 | States and political subdivisions
Assets and liabilities measured at fair value on a recurring basis
Total debt securities	0	0
Recurring | Level 3 | Corporate
Assets and liabilities measured at fair value on a recurring basis
Total debt securities	0	0
Recurring | Level 3 | Mortgage-backed securities | GNMA
Assets and liabilities measured at fair value on a recurring basis
Total mortgage-backed securities	0	0
Recurring | Level 3 | Mortgage-backed securities | FNMA
Assets and liabilities measured at fair value on a recurring basis
Total mortgage-backed securities	0	0
Recurring | Level 3 | Mortgage-backed securities | FHLMC
Assets and liabilities measured at fair value on a recurring basis
Total mortgage-backed securities	0	0
Recurring | Level 3 | Mortgage-backed securities | Non-agency
Assets and liabilities measured at fair value on a recurring basis
Total mortgage-backed securities	0	0
Recurring | Level 3 | Collateralized mortgage obligations | GNMA
Assets and liabilities measured at fair value on a recurring basis
Total mortgage-backed securities	0	0
Recurring | Level 3 | Collateralized mortgage obligations | FNMA
Assets and liabilities measured at fair value on a recurring basis
Total mortgage-backed securities	0	0
Recurring | Level 3 | Collateralized mortgage obligations | FHLMC
Assets and liabilities measured at fair value on a recurring basis
Total mortgage-backed securities	0	0
Recurring | Level 3 | Interest rate lock commitments
Assets and liabilities measured at fair value on a recurring basis
Derivative assets	673	641
Recurring | Level 3 | Forward commitments
Assets and liabilities measured at fair value on a recurring basis
Derivative assets	0	0
Recurring | Level 3 | Foreign exchange swap agreements
Assets and liabilities measured at fair value on a recurring basis
Derivative assets	0
Derivative liabilities	0	0
Recurring | Level 3 | Interest rate swap agreements | Interest rate swaps designated as hedging instruments
Assets and liabilities measured at fair value on a recurring basis
Derivative assets	0	0
Derivative liabilities	0	0
Recurring | Level 3 | Interest rate swap agreements | Interest rate swaps not designated as hedging instruments
Assets and liabilities measured at fair value on a recurring basis
Derivative assets	0	0
Derivative liabilities	0	0
Recurring | Level 3 | Risk participation agreements
Assets and liabilities measured at fair value on a recurring basis
Derivative liabilities	$ 0	$ 0

Disclosures About Fair Value _6

Disclosures About Fair Value of Financial Instruments - Reconciliation of all Assets and Liabilities Measured at Fair Value on a Recurring Basis Using Significant Unobservable Inputs (Level 3) (Details) - Level 3 - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Reconciliation of all assets and liabilities measured at fair value on a recurring basis using significant unobservable inputs (Level 3)
Beginning balance,	$ 791	$ 761	$ 641	$ 559
Interest rate lock commitments:
Net activity	(118)	(97)	32	105
Ending balance	$ 673	$ 664	$ 673	$ 664

Disclosures About Fair Value _7

Disclosures About Fair Value of Financial Instruments - Nonrecurring Assets that had Fair Market Values Below the Carrying Amount (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Level 1
Fair value measurement for nonrecurring assets that had a fair market value below the carrying amount
Loans individually assessed	$ 0	$ 0
Total assets	273,561	169,613
Level 2
Fair value measurement for nonrecurring assets that had a fair market value below the carrying amount
Loans individually assessed	0	0
Total assets	1,816,481	1,784,996
Level 3
Fair value measurement for nonrecurring assets that had a fair market value below the carrying amount
Loans individually assessed	10,494,023	10,274,593
Total assets	10,504,066	10,284,002
Nonrecurring
Fair value measurement for nonrecurring assets that had a fair market value below the carrying amount
Mortgage servicing rights	23	133
Real estate owned, net	76	104
Total assets	15,048	36,984
Nonrecurring | Loans individually assessed
Fair value measurement for nonrecurring assets that had a fair market value below the carrying amount
Loans individually assessed	14,949	36,747
Nonrecurring | Level 1
Fair value measurement for nonrecurring assets that had a fair market value below the carrying amount
Mortgage servicing rights	0	0
Real estate owned, net	0	0
Total assets	0	0
Nonrecurring | Level 1 | Loans individually assessed
Fair value measurement for nonrecurring assets that had a fair market value below the carrying amount
Loans individually assessed	0	0
Nonrecurring | Level 2
Fair value measurement for nonrecurring assets that had a fair market value below the carrying amount
Mortgage servicing rights	0	0
Real estate owned, net	0	0
Total assets	0	0
Nonrecurring | Level 2 | Loans individually assessed
Fair value measurement for nonrecurring assets that had a fair market value below the carrying amount
Loans individually assessed	0	0
Nonrecurring | Level 3
Fair value measurement for nonrecurring assets that had a fair market value below the carrying amount
Mortgage servicing rights	23	133
Real estate owned, net	76	104
Total assets	15,048	36,984
Nonrecurring | Level 3 | Loans individually assessed
Fair value measurement for nonrecurring assets that had a fair market value below the carrying amount
Loans individually assessed	$ 14,949	$ 36,747

Disclosures About Fair Value _8

Disclosures About Fair Value of Financial Instruments - Additional Quantitative Information, Assets Measured at Fair Value, Recurring and Nonrecurring Basis, Level 3 Input (Details)	Sep. 30, 2024 USD ($)	Dec. 31, 2023 USD ($)
Nonrecurring
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Mortgage servicing rights	$ 23,000	$ 133,000
Real estate owned, net	$ 76,000	104,000
Nonrecurring | Estimated cost to sell | Appraisal Value
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Real estate owned, net, measurement input	0.10
Nonrecurring | Annual service cost | Discounted cash flow
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Mortgage servicing rights, measurement input	88
Nonrecurring | Prepayment rate | Discounted cash flow | Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Mortgage servicing rights, measurement input	0.065
Nonrecurring | Prepayment rate | Discounted cash flow | Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Mortgage servicing rights, measurement input	0.187
Nonrecurring | Prepayment rate | Discounted cash flow | Weighted Average
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Mortgage servicing rights, measurement input	0.110
Nonrecurring | Expected life (months) | Discounted cash flow | Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Mortgage servicing rights, measurement input	50.3
Nonrecurring | Expected life (months) | Discounted cash flow | Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Mortgage servicing rights, measurement input	101.9
Nonrecurring | Expected life (months) | Discounted cash flow | Weighted Average
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Mortgage servicing rights, measurement input	70.5
Nonrecurring | Option adjusted spread | Discounted cash flow
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Mortgage servicing rights, measurement input	0.0725
Nonrecurring | Forward yield curve | Discounted cash flow | Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Mortgage servicing rights, measurement input	0.0531
Nonrecurring | Forward yield curve | Discounted cash flow | Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Mortgage servicing rights, measurement input	0.0450
Recurring
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Loans held for sale	$ 9,370,000
Recurring | Estimated pull-through rate | Quoted prices for similar loans in active markets adjusted by an expected pull-through rate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Loans held for sale, measurement input	1
Loans individually assessed | Nonrecurring
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Loans individually assessed	$ 14,949,000	$ 36,747,000
Loans individually assessed | Nonrecurring | Estimated cost to sell | Appraisal Value
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Loans individually assessed, measurement input	0.10

Derivative Financial Instrume_3

Derivative Financial Instruments - Narrative (Details) - Interest rate swap agreements - Derivatives Designated as Hedging Instruments $ in Thousands	12 Months Ended
	Dec. 31, 2023 USD ($) derivative	Sep. 30, 2024 USD ($)
Derivative [Line Items]
Number of derivatives | derivative	7
Derivative, notional amount | $	$ 175,000	$ 175,000
Minimum
Derivative [Line Items]
Derivative contract maturities (in years)	3 years
Maximum
Derivative [Line Items]
Derivative contract maturities (in years)	5 years

Derivative Financial Instrume_4

Derivative Financial Instruments - Schedule of Derivative Financial Instruments (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Derivative [Line Items]
Derivative Asset, Statement of Financial Position [Extensible Enumeration]	Other assets	Other assets
Derivative Liability, Statement of Financial Position [Extensible Enumeration]	Other liabilities	Other liabilities
Derivatives Designated as Hedging Instruments | Interest rate swap agreements
Derivative [Line Items]
Asset derivatives, notional amount	$ 50,000	$ 75,000
Asset derivatives, fair value	90	713
Liability derivatives, notional amount	125,000	100,000
Liability derivatives, fair value	2,085	1,198
Derivatives Not Designated as Hedging Instruments
Derivative [Line Items]
Asset derivatives, notional amount	833,940	822,277
Asset derivatives, fair value	32,645	42,772
Liability derivatives, notional amount	1,011,148	939,144
Liability derivatives, fair value	34,231	42,940
Derivatives Not Designated as Hedging Instruments | Interest rate swap agreements
Derivative [Line Items]
Asset derivatives, notional amount	748,903	725,139
Asset derivatives, fair value	31,761	41,406
Liability derivatives, notional amount	748,903	725,139
Liability derivatives, fair value	31,924	41,437
Derivatives Not Designated as Hedging Instruments | Foreign exchange swap agreements
Derivative [Line Items]
Asset derivatives, notional amount	2,987	0
Asset derivatives, fair value	6	0
Liability derivatives, notional amount	119	12,278
Liability derivatives, fair value	173	291
Derivatives Not Designated as Hedging Instruments | Interest rate lock commitments
Derivative [Line Items]
Asset derivatives, notional amount	27,536	21,857
Asset derivatives, fair value	673	641
Liability derivatives, notional amount	0	0
Liability derivatives, fair value	0	0
Derivatives Not Designated as Hedging Instruments | Forward commitments
Derivative [Line Items]
Asset derivatives, notional amount	4,514	281
Asset derivatives, fair value	115	12
Liability derivatives, notional amount	0	0
Liability derivatives, fair value	0	0
Derivatives Not Designated as Hedging Instruments | Risk participation agreements
Derivative [Line Items]
Asset derivatives, notional amount	0	0
Asset derivatives, fair value	0	0
Liability derivatives, notional amount	137,126	101,727
Liability derivatives, fair value	$ 49	$ 14

Derivative Financial Instrume_5

Derivative Financial Instruments - Gain (Loss) on Derivative Financial Instruments (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Hedging derivatives:
Decrease in interest expense	$ 732	$ 627	$ 2,198	$ 831
(Decrease)/increase in other income
Non-hedging swap derivatives:
(Decrease)/increase in other income	(221)	203	(45)	(127)
(Decrease)/increase in mortgage banking income
Non-hedging swap derivatives:
(Decrease)/increase in other income	$ (73)	$ (221)	$ 135	$ (46)

Derivative Financial Instrume_6

Derivative Financial Instruments - Key Characteristics of Interest Rate Derivative Transactions (Details) - Derivatives Designated as Hedging Instruments - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Interest rate swap agreements
Derivative [Line Items]
Notional amount	$ 175,000	$ 175,000
Estimated decrease to interest expense in the next twelve months	(2,389)
Issued May 11, 2023
Derivative [Line Items]
Notional amount	$ 25,000
Effective rate	3.51%
Estimated decrease to interest expense in the next twelve months	$ (462)
Remaining term (in months)	31 months
Issued May 12, 2023
Derivative [Line Items]
Notional amount	$ 25,000
Effective rate	3.56%
Estimated decrease to interest expense in the next twelve months	$ (450)
Remaining term (in months)	43 months
Issued May 19, 2023
Derivative [Line Items]
Notional amount	$ 25,000
Effective rate	3.86%
Estimated decrease to interest expense in the next twelve months	$ (377)
Remaining term (in months)	38 months
Issued May 31, 2023
Derivative [Line Items]
Notional amount	$ 25,000
Effective rate	4.04%
Estimated decrease to interest expense in the next twelve months	$ (326)
Remaining term (in months)	26 months
Issued July 26, 2023
Derivative [Line Items]
Notional amount	$ 25,000
Effective rate	4.24%
Estimated decrease to interest expense in the next twelve months	$ (271)
Remaining term (in months)	46 months
Issued July 31, 2023
Derivative [Line Items]
Notional amount	$ 25,000
Effective rate	4.27%
Estimated decrease to interest expense in the next twelve months	$ (249)
Remaining term (in months)	40 months
Issued August 9, 2023
Derivative [Line Items]
Notional amount	$ 25,000
Effective rate	4.31%
Estimated decrease to interest expense in the next twelve months	$ (254)
Remaining term (in months)	34 months

Changes in Accumulated Other _3

Changes in Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Changes in accumulated other comprehensive income by component
Beginning balance	$ 1,556,598	$ 1,511,501	$ 1,551,317	$ 1,491,486
Other comprehensive (loss)/income before reclassification adjustments	24,293	(27,890)	17,688	(30,855)
Amounts reclassified from accumulated other comprehensive income	(387)	(382)	25,626	4,490
Other comprehensive income/(loss)	23,906	(28,272)	43,314	(26,365)
Ending balance	1,591,325	1,498,431	1,591,325	1,498,431
Total
Changes in accumulated other comprehensive income by component
Beginning balance	(130,084)	(169,251)	(149,492)	(171,158)
Other comprehensive income/(loss)	23,906	(28,272)	43,314	(26,365)
Ending balance	(106,178)	(197,523)	(106,178)	(197,523)
Unrealized  losses on securities  available-for-sale
Changes in accumulated other comprehensive income by component
Beginning balance	(132,959)	(163,272)	(150,659)	(164,206)
Other comprehensive (loss)/income before reclassification adjustments	27,947	(29,715)	18,858	(34,417)
Amounts reclassified from accumulated other comprehensive income	0	0	26,789	5,636
Other comprehensive income/(loss)	27,947	(29,715)	45,647	(28,781)
Ending balance	(105,012)	(192,987)	(105,012)	(192,987)
Other comprehensive income (loss) before reclassification adjustment, tax	(8,980)	9,140	(7,054)	9,603
Amounts reclassified from accumulated other comprehensive income	0	0	(7,706)	(1,731)
Change in  fair value  of interest  rate swaps
Changes in accumulated other comprehensive income by component
Beginning balance	2,110	1,737	(374)	0
Other comprehensive (loss)/income before reclassification adjustments	(3,654)	1,825	(1,170)	3,562
Amounts reclassified from accumulated other comprehensive income	0	0	0	0
Other comprehensive income/(loss)	(3,654)	1,825	(1,170)	3,562
Ending balance	(1,544)	3,562	(1,544)	3,562
Other comprehensive income (loss) before reclassification adjustment, tax	1,068	(533)	342	(1,041)
Change in  defined benefit  pension plans
Changes in accumulated other comprehensive income by component
Beginning balance	765	(7,716)	1,541	(6,952)
Other comprehensive (loss)/income before reclassification adjustments	0	0	0	0
Amounts reclassified from accumulated other comprehensive income	(387)	(382)	(1,163)	(1,146)
Other comprehensive income/(loss)	(387)	(382)	(1,163)	(1,146)
Ending balance	378	(8,098)	378	(8,098)
Amounts reclassified from accumulated other comprehensive income	$ 148	$ 152	$ 442	$ 456