Northwest Bancshares (NWBI) 10-Q 3 Nov 23 2023 Q3 Quarterly report Financial data

Cover

Cover - shares	9 Months Ended
	Sep. 30, 2023	Oct. 31, 2023
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Sep. 30, 2023
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
Entity Shell Company	false
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 Common Stock, Shares Outstanding		127,104,458
Entity Central Index Key	0001471265
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2023
Document Fiscal Period Focus	Q3

CONSOLIDATED STATEMENTS OF FINA

CONSOLIDATED STATEMENTS OF FINANCIAL CONDITION (Unaudited) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Assets
Cash and cash equivalents	$ 161,995	$ 139,365
Marketable securities available-for-sale (amortized cost of $1,262,080 and $1,431,728, respectively)	1,010,076	1,218,108
Marketable securities held-to-maturity (fair value of $682,681 and $751,384, respectively)	830,106	881,249
Total cash and cash equivalents and marketable securities	2,002,177	2,238,722
Loans held-for-sale	10,592	9,913
Loans held for investment	11,299,681	10,910,539
Allowance for credit losses	(124,841)	(118,036)
Loans receivable, net	11,185,432	10,802,416
FHLB stock, at cost	40,404	40,143
Accrued interest receivable	42,624	35,528
Real estate owned, net	363	413
Premises and equipment, net	138,041	145,909
Bank-owned life insurance	250,502	255,062
Goodwill	380,997	380,997
Other intangible assets, net	6,013	8,560
Other assets	315,648	205,574
Total assets	14,362,201	14,113,324
Liabilities:
Noninterest-bearing demand deposits	2,774,291	2,993,243
Interest-bearing demand deposits	2,598,080	2,686,431
Money market deposit accounts	2,042,813	2,457,569
Savings deposits	2,116,360	2,275,020
Time deposits	2,258,338	1,052,285
Total deposits	11,789,882	11,464,548
Borrowed funds	604,587	681,166
Subordinated debt	114,102	113,840
Junior subordinated debentures	129,509	129,314
Advances by borrowers for taxes and insurance	27,653	47,613
Accrued interest payable	7,915	3,231
Other liabilities	190,122	182,126
Total liabilities	12,863,770	12,621,838
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, 127,101,349 and 127,028,848 shares issued and outstanding, respectively	1,271	1,270
Additional paid-in capital	1,023,591	1,019,647
Retained earnings	671,092	641,727
Accumulated other comprehensive loss	(197,523)	(171,158)
Total shareholders’ equity	1,498,431	1,491,486
Total liabilities and shareholders’ equity	$ 14,362,201	$ 14,113,324

CONSOLIDATED STATEMENTS OF FI_2

CONSOLIDATED STATEMENTS OF FINANCIAL CONDITION (Unaudited) (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Statement of Financial Position [Abstract]
Marketable securities available-for-sale, amortized cost	$ 1,262,080	$ 1,431,728
Securities held-to-maturity	$ 682,681	$ 751,384
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)	127,101,349	127,028,848
Common stock, shares outstanding (in shares)	127,101,349	127,028,848

CONSOLIDATED STATEMENTS OF INCO

CONSOLIDATED STATEMENTS OF INCOME (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Interest income:
Loans receivable	$ 140,667	$ 106,943	$ 397,136	$ 290,691
Mortgage-backed securities	8,072	8,683	24,935	22,201
Taxable investment securities	786	838	2,472	2,230
Tax-free investment securities	491	709	1,858	2,066
FHLB stock dividends	668	148	2,202	311
Interest-earning deposits	914	1,295	1,931	3,446
Total interest income	151,598	118,616	430,534	320,945
Interest expense:
Deposits	31,688	3,157	64,743	10,249
Borrowed funds	11,542	2,710	36,410	7,059
Total interest expense	43,230	5,867	101,153	17,308
Net interest income	108,368	112,749	329,381	303,637
Provision for credit losses - loans	3,983	7,689	14,863	8,837
Provision for credit losses - unfunded commitments	(2,981)	3,585	65	8,577
Net interest income after provision for credit losses	107,366	101,475	314,453	286,223
Noninterest income:
Loss on sale of investments	0	(2)	(8,306)	(7)
Gain on sale of mortgage servicing rights	0	0	8,305	0
Gain on sale of SBA loans	301	0	1,412	0
Service charges and fees	15,270	14,323	43,292	41,063
Trust and other financial services income	7,085	6,650	20,400	21,123
Gain on real estate owned, net	29	290	922	552
Income from bank-owned life insurance	4,561	1,475	7,134	5,466
Mortgage banking income	632	766	2,184	4,388
Other operating income	3,010	3,301	9,311	10,406
Total noninterest income	30,888	26,803	84,654	82,991
Noninterest expense:
Compensation and employee benefits	51,243	46,711	145,497	141,701
Premises and occupancy costs	7,052	7,171	22,102	22,248
Office operations	3,398	3,229	9,208	9,774
Collections expense	551	322	1,367	1,245
Processing expenses	14,672	13,416	43,670	38,911
Marketing expenses	2,379	2,147	8,127	6,322
Federal deposit insurance premiums	2,341	1,200	6,628	3,459
Professional services	3,002	3,363	11,564	9,269
Amortization of intangible assets	795	1,047	2,546	3,345
Real estate owned expense	141	61	405	170
Merger, asset disposition and restructuring expense	0	0	4,395	1,374
Other expenses	1,996	321	5,369	2,929
Total noninterest expense	87,570	78,988	260,878	240,747
Income before income taxes	50,684	49,290	138,229	128,467
Federal and state income taxes expense	11,464	11,986	32,286	29,450
Net income	$ 39,220	$ 37,304	$ 105,943	$ 99,017
Basic earnings per share (in dollars per share)	$ 0.31	$ 0.29	$ 0.83	$ 0.78
Diluted earnings per share (in dollars per share)	$ 0.31	$ 0.29	$ 0.83	$ 0.78

CONSOLIDATED STATEMENTS OF COMP

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME/(LOSS) (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Statement of Comprehensive Income [Abstract]
Net income	$ 39,220	$ 37,304	$ 105,943	$ 99,017
Net unrealized holding (losses)/gains on marketable securities:
Unrealized holding losses, net of tax of $9,140, $14,705, $9,603 and $45,555, respectively	(29,715)	(48,387)	(34,417)	(153,124)
Reclassification adjustment for losses/(gains) included in net income, net of tax of $0, $0, ($1,731) and $0, respectively	0	0	5,636	(2)
Net unrealized holding losses on marketable securities	(29,715)	(48,387)	(28,781)	(153,126)
Change in fair value of interest rate swaps, net of tax of ($533), $0, ($1,041) and $0, respectively	1,825	0	3,562	0
Defined benefit plan:
Actuarial reclassification adjustments for prior period service costs and actuarial gains included in net income, net of tax of $152, $50, $456 and $151, respectively	(382)	(131)	(1,146)	(393)
Other comprehensive loss	(28,272)	(48,518)	(26,365)	(153,519)
Total comprehensive income/(loss)	$ 10,948	$ (11,214)	$ 79,578	$ (54,502)

CONSOLIDATED STATEMENTS OF CO_2

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME/(LOSS) (Unaudited) (Parenthetical) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Statement of Comprehensive Income [Abstract]
Unrealized holding losses, tax	$ 9,140	$ 14,705	$ 9,603	$ 45,555
Reclassification adjustment for losses/(gains) included in net income, tax	0	0	(1,731)	0
Change in fair value of interest rate swaps, tax	(533)	0	(1,041)	0
Actuarial reclassification adjustments for prior period service costs and actuarial gains included in net income, tax	$ 152	$ 50	$ 456	$ 151

CONSOLIDATED STATEMENTS OF CHAN

CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY (Unaudited) - USD ($) $ in Thousands	Total	Cumulative Effect, Period of Adoption, Adjustment	Common stock	Additional paid-in capital	Retained earnings	Retained earnings Cumulative Effect, Period of Adoption, Adjustment	Accumulated other comprehensive income/(loss)
Beginning balance (in shares) at Dec. 31, 2021			126,612,183
Beginning balance at Dec. 31, 2021	$ 1,583,571		$ 1,266	$ 1,010,405	$ 609,529		$ (37,629)
Comprehensive income:
Net income	99,017				99,017
Other comprehensive income (loss), net of tax	(153,519)						(153,519)
Total comprehensive income/(loss)	(54,502)				99,017		(153,519)
Exercise of stock options (in shares)			314,880
Exercise of stock options	3,721		$ 2	3,719
Stock-based compensation expense (in shares)			75,377
Stock-based compensation expense	3,067		$ 2	3,065
Stock-based compensation forfeited (in shares)			(80,451)
Stock-based compensation forfeited	(1)		$ (1)
Dividends paid	(76,070)				(76,070)
Ending balance (in shares) at Sep. 30, 2022			126,921,989
Ending balance at Sep. 30, 2022	1,459,786		$ 1,269	1,017,189	632,476		(191,148)
Beginning balance (in shares) at Dec. 31, 2021			126,612,183
Beginning balance at Dec. 31, 2021	$ 1,583,571		$ 1,266	1,010,405	609,529		(37,629)
Ending balance (in shares) at Dec. 31, 2022	127,028,848		127,028,848
Ending balance at Dec. 31, 2022	$ 1,491,486	$ (329)	$ 1,270	1,019,647	641,727	$ (329)	(171,158)
Comprehensive income:
Accounting Standards Update [Extensible List]	Accounting Standards Update 2022-02 [Member]
Beginning balance (in shares) at Jun. 30, 2022			126,881,766
Beginning balance at Jun. 30, 2022	$ 1,494,539		$ 1,269	1,015,349	620,551		(142,630)
Comprehensive income:
Net income	37,304				37,304
Other comprehensive income (loss), net of tax	(48,518)						(48,518)
Total comprehensive income/(loss)	(11,214)				37,304		(48,518)
Exercise of stock options (in shares)			73,472
Exercise of stock options	897			897
Stock-based compensation expense	944			944
Stock-based compensation forfeited (in shares)			(33,249)
Stock-based compensation forfeited	(1)			(1)
Dividends paid	(25,379)				(25,379)
Ending balance (in shares) at Sep. 30, 2022			126,921,989
Ending balance at Sep. 30, 2022	$ 1,459,786		$ 1,269	1,017,189	632,476		(191,148)
Beginning balance (in shares) at Dec. 31, 2022	127,028,848		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/(loss)	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		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/(loss)	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		127,101,349
Ending balance at Sep. 30, 2023	$ 1,498,431		$ 1,271	$ 1,023,591	$ 671,092		$ (197,523)

CONSOLIDATED STATEMENTS OF CH_2

CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY (Unaudited) (Parenthetical) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Statement of Stockholders' Equity [Abstract]
Other comprehensive income (loss), tax	$ 8,759	$ 14,755	$ 7,287	$ 45,706
Dividends paid per share (in dollars per share)	$ 0.20	$ 0.20	$ 0.60	$ 0.60

CONSOLIDATED STATEMENTS OF CASH

CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Operating activities:
Net income	$ 105,943	$ 99,017
Adjustments to reconcile net income to net cash provided by/(used in) operating activities:
Provision for credit losses	14,928	8,837
Loss on sale of investments	8,306	0
Net loss/(gain) on sale of assets	743	(858)
Mortgage banking activity	5,342	(3,308)
Gain on sale of SBA loans	(1,390)	0
Gain on sale of mortgage servicing rights	(8,305)	0
Net depreciation, amortization and accretion	16,473	3,874
Increase in other assets	(114,158)	(31,790)
Increase in other liabilities	15,617	11,270
Net amortization on marketable securities	2,438	3,849
Noncash compensation expense related to stock benefit plans	3,335	3,066
Noncash write-down of real estate owned	37	44
Deferred income tax (benefit)/expense	(3,610)	1,928
Origination of loans held-for-sale	(137,789)	(317,117)
Proceeds from sale of loans held-for-sale	139,819	331,268
Net cash provided by operating activities	47,729	110,080
Investing activities:
Purchase of marketable securities held-to-maturity	0	(212,892)
Purchase of marketable securities available-for-sale	(23,502)	(102,178)
Proceeds from maturities and principal reductions of marketable securities held-to-maturity	50,517	80,765
Proceeds from maturities and principal reductions of marketable securities available-for-sale	81,803	197,310
Proceeds from sale of marketable securities available-for-sale	101,229	0
Proceeds from bank-owned life insurance	2,798	4,753
Loan originations	(2,928,360)	(3,464,471)
Proceeds from sale of mortgage servicing rights	13,118	0
Loan purchases	0	(371,121)
Proceeds from loan maturities and principal reductions	2,524,676	3,110,264
Net redemptions of FHLB stock	(261)	(5,097)
Proceeds from sale of real estate owned	1,343	1,469
Proceeds from sale of real estate owned for investment, net	0	229
Purchases of premises and equipment, net	(1,617)	(613)
Net cash used in investing activities	(178,256)	(761,582)
Financing activities:
Net increase/(decrease) in deposits	325,334	(422,773)
Repayments of long-term borrowings	0	(10,094)
Net (decrease)/increase in short-term borrowings	(76,578)	10,943
Increase in advances by borrowers for taxes and insurance	(19,960)	(14,935)
Cash dividends paid on common stock	(76,249)	(76,070)
Proceeds from stock options exercised	610	3,721
Net cash provided by/(used in) financing activities	153,157	(509,208)
Net increase/(decrease) in cash and cash equivalents	22,630	(1,160,710)
Cash and cash equivalents at beginning of period	139,365	1,279,259
Net increase/(decrease) in cash and cash equivalents	22,630	(1,160,710)
Cash and cash equivalents at end of period	161,995	118,549
Cash paid during the period for:
Interest on deposits and borrowings (including interest credited to deposit accounts of $56,021 and $9,812, respectively)	96,469	18,281
Income taxes	38,236	21,851
Non-cash activities:
Loan foreclosures and repossessions	2,844	3,423
Sale of real estate owned financed by the Company	$ 70	$ 175

CONSOLIDATED STATEMENTS OF CA_2

CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) (Parenthetical) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Statement of Cash Flows [Abstract]
Interest on deposits and borrowings, interest credited to deposit accounts	$ 56,021	$ 9,812

Basis of Presentation and Infor

Basis of Presentation and Informational Disclosures	9 Months Ended
	Sep. 30, 2023
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 142 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 MutualFirst 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, 2022 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. These reclassifications had no effect on the reported results of operations. An adjustment has been made to the Consolidated Statements of Income and Consolidated Statements of Cash Flows for the quarter and nine months ended September 30, 2022, to reclassify the provision for credit losses - unfunded commitments, previously presented in other expense, to provide additional transparency to financial statement users. The results of operations for the quarter ended September 30, 2023 are not necessarily indicative of the results that may be expected for the year ending December 31, 2023, or any other period. Stock-Based Compensation On March 15, 2023, the Company awarded employees 176,623 restricted stock units (“RSUs”) with a weighted average discounted grant date fair value of $11.28. The RSUs vest over a three-year period with the first vesting occurring one year from the grant date. The Company awarded directors 33,048 restricted stock awards (“RSAs”) with a grant date fair value of $12.80 which fully vest one-year from the grant date. Also, the Company awarded employees 176,623 performance share units (“PSUs”) with a discounted grant date fair value of $10.54. The number of PSUs earned will be based on attainment of certain performance criteria over a three-year period, with the actual number of shares issuable ranging between 0% and 150% of the number of PSUs granted. The PSUs have a three-year cliff vesting, from the date of grant, and any PSUs earned will be issued after the vesting period. As of September 30, 2023, we awarded discretionary grants of 178,483 RSUs with a weighted average grant date fair value of $10.87. These shares vest over a two Income Taxes-Uncertain Tax Positions Accounting standards prescribe a comprehensive model for how a company should recognize, measure, present and disclose in its financial statements uncertain tax positions that the company has taken or expects to take on a tax return. A tax benefit from an uncertain position may be recognized only if it is “more likely than not” that the position is sustainable, based on its technical merits. The tax benefit of a qualifying position is the largest amount of tax benefit that is greater than 50% likely of being realized upon ultimate settlement with a taxing authority having full knowledge of all relevant information. We had $702,000 and $473,000 of liability for unrecognized tax benefits as of September 30, 2023 and December 31, 2022. We recognize interest accrued related to: (1) unrecognized tax benefits in other expenses and (2) refund claims in other operating income. We recognize penalties (if any) in other expenses. We are subject to audit by the Internal Revenue Service and any state in which we conduct business for the tax periods ended December 31, 2022, 2021, 2020 and 2019. Recently Adopted Accounting Standards In March 2022, the Financial Accounting Standards Board ( “ FASB ” ) issued Accounting Standards Update ( “ ASU ” ) No. 2022-02, “Financial Instruments - Credit Losses (Topic 326): Troubled Debt Restructurings and Vintage Disclosure.” This ASU eliminates the accounting guidance for troubled debt restructurings ( “ TDRs ” ), while enhancing disclosure requirements for certain loan modifications when a borrower is experiencing financial difficulty. This ASU also requires the disclosure of current period gross write-offs by year for origination for financing receivables. This guidance is effective for annual periods beginning after December 15, 2022, including interim periods within those years, with early adoption permitted. This ASU is applied prospectively to modifications and write-offs beginning on the first day of the fiscal year of adoption. An entity may elect to adopt a modified retrospective transition method on the recognition and measurement of the TDR guidance. We adopted ASU 2022-02 using a modified retrospective transition approach related to the recognition and measurement of the TDR guidance and on a prospective basis for modification and write-offs. As a result, the Company was not required to adjust its comparative period financial information for effects of the standard or make the new required ASU 2022-02 disclosure for periods before the date of adoption (i.e. January 1, 2023). This change did not have a material effect on our consolidated financial statements. In March 2020, the FASB issued ASU No. 2020-04, “ Facilitation of the Effects of Reference Rate Reform on Financial Reporting .” This ASU provides temporary optional guidance on contract modifications and hedge accounting to ease the financial reporting burdens of the expected market transition from LIBOR and other interbank offered rates to alternative reference rates. The guidance provides expedients and exceptions for applying GAAP to transactions affected by reference rate reform if certain criteria are met. The amendments primarily include contract modifications and hedge accounting, as well as providing a one-time election for the sale or transfer of debt securities classified as held-to-maturity. This guidance was effective as of March 12, 2020 through December 31, 2022. In December 2022, the FASB issued ASU No. 2022-06, “Reference Rate Reform (Topic 848): Deferral of the Sunset Date to Topic 848”. This guidance extends the guidance of ASU 2022-04 from December 31, 2022 to December 31, 2024. In January 2021, the FASB issued ASU No. 2021-01, “Reference Rate Reform.” This ASU provides amendments, which are elective, and apply to all entities that have derivative instruments that use an interest rate for margining, discounting or contract price alignment of certain derivative instruments that are modified as a result of the reference rate reform. This ASU is effective upon issuance through December 31, 2024, and can be adopted at any time during this period.

Marketable Securities

Marketable Securities	9 Months Ended
	Sep. 30, 2023
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, 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 — (1,750) 18,250 Due after ten years 50,166 — (11,890) 38,276 Debt issued by government-sponsored enterprises: Due after one year through five years 45,985 — (7,502) 38,483 Due after five years through ten years 434 — (11) 423 Municipal securities: Due after one year through five years 954 3 (9) 948 Due after five years through ten years 21,976 — (3,055) 18,921 Due after ten years 62,990 — (14,788) 48,202 Corporate debt issues: Due after five years through ten years 8,464 — (1,000) 7,464 Residential mortgage-backed securities: Fixed rate pass-through 213,849 — (35,305) 178,544 Variable rate pass-through 7,501 2 (169) 7,334 Fixed rate agency CMOs 805,086 — (175,985) 629,101 Variable rate agency CMOs 24,675 28 (573) 24,130 Total residential mortgage-backed securities 1,051,111 30 (212,032) 839,109 Total marketable securities available-for-sale $ 1,262,080 33 (252,037) 1,010,076 The following table shows the portfolio of marketable securities available-for-sale at December 31, 2022 (in thousands): Amortized Gross Gross Fair Debt issued by the U.S. government and agencies: Due after one year through five years $ 20,000 — (1,799) 18,201 Due after ten years 53,152 — (10,761) 42,391 Debt issued by government-sponsored enterprises: Due after one year through five years 993 — (49) 944 Due after five years through ten years 45,814 — (7,557) 38,257 Municipal securities: Due within one year 506 — (1) 505 Due after one year through five years 986 21 (13) 994 Due after five years through ten years 36,332 — (2,290) 34,042 Due after ten years 89,631 8 (13,414) 76,225 Corporate debt issues: Due after five years through ten years 13,540 — (562) 12,978 Residential mortgage-backed securities: Fixed rate pass-through 227,122 35 (31,171) 195,986 Variable rate pass-through 8,837 10 (184) 8,663 Fixed rate agency CMOs 906,962 — (145,284) 761,678 Variable rate agency CMOs 27,853 31 (640) 27,244 Total residential mortgage-backed securities 1,170,774 76 (177,279) 993,571 Total marketable securities available-for-sale $ 1,431,728 105 (213,725) 1,218,108 The following table shows the portfolio of marketable securities held-to-maturity at September 30, 2023 (in thousands): Amortized Gross Gross Fair Debt issued by government-sponsored enterprises: Due after one year through five years $ 49,471 — (6,830) 42,641 Due after five years through ten years 74,986 — (14,901) 60,085 Residential mortgage-backed securities: Fixed rate pass-through 151,411 — (27,070) 124,341 Variable rate pass-through 468 — (8) 460 Fixed rate agency CMOs 553,241 — (98,606) 454,635 Variable rate agency CMOs 529 — (10) 519 Total residential mortgage-backed securities 705,649 — (125,694) 579,955 Total marketable securities held-to-maturity $ 830,106 — (147,425) 682,681 The following table shows the portfolio of marketable securities held-to-maturity at December 31, 2022 (in thousands): Amortized Gross Gross Fair Debt issued by government-sponsored enterprises: Due after one year through five years $ 29,478 — (3,676) 25,802 Due after five years through ten years 94,977 — (18,157) 76,820 Residential mortgage-backed securities: Fixed rate pass-through 163,196 — (24,684) 138,512 Variable rate pass-through 542 — (12) 530 Fixed rate agency CMOs 592,527 — (83,325) 509,202 Variable rate agency CMOs 529 — (11) 518 Total residential mortgage-backed securities 756,794 — (108,032) 648,762 Total marketable securities held-to-maturity $ 881,249 — (129,865) 751,384 The following table shows the contractual maturity of our residential mortgage-backed securities available-for-sale at September 30, 2023 (in thousands): Amortized Fair Residential mortgage-backed securities: Due within one year $ 60 59 Due after one year through five years 25,302 23,185 Due after five years through ten years 27,837 25,424 Due after ten years 997,912 790,441 Total residential mortgage-backed securities $ 1,051,111 839,109 The following table shows the contractual maturity of our residential mortgage-backed securities held-to-maturity at September 30, 2023 (in thousands): Amortized Fair Residential mortgage-backed securities: Due after one year through five years $ 20,343 17,291 Due after five years through ten years 20,225 15,484 Due after ten years 665,081 547,180 Total residential mortgage-backed securities $ 705,649 579,955 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, 2023 (in thousands): Less than 12 months 12 months or more Total Fair Unrealized Fair Unrealized Fair Unrealized U.S. government-sponsored enterprises $ 423 (11) 197,736 (42,873) 198,159 (42,884) Municipal securities 8,412 (526) 59,233 (17,326) 67,645 (17,852) Corporate issues — — 7,464 (1,000) 7,464 (1,000) Residential mortgage-backed securities - agency 25,649 (1,271) 1,390,685 (336,455) 1,416,334 (337,726) Total $ 34,484 (1,808) 1,655,118 (397,654) 1,689,602 (399,462) 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, 2022 (in thousands): Less than 12 months 12 months or more Total Fair Unrealized Fair Unrealized Fair Unrealized U.S. government-sponsored enterprises $ 1,735 (82) 200,679 (41,917) 202,414 (41,999) Corporate debt issues 12,979 (562) — — 12,979 (562) Municipal securities 60,676 (4,047) 44,493 (11,671) 105,169 (15,718) Residential mortgage-backed securities - agency 373,186 (22,796) 1,264,042 (262,515) 1,637,228 (285,311) Total $ 448,576 (27,487) 1,509,214 (316,103) 1,957,790 (343,590) The Company does not believe that the available-for-sale debt securities that were in an unrealized loss position as of September 30, 2023, which were comprised of 548 individual securities, represents 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. The 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, 2023. The following table presents the credit quality of our held-to-maturity securities, based on the latest information available as of September 30, 2023 (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, 2023. AA+ Total Held-to-maturity securities (at amortized cost): Debt issued by the U.S. government-sponsored enterprises $ 124,457 124,457 Residential mortgage-backed securities 705,649 705,649 Total marketable securities held-to-maturity $ 830,106 830,106

Loans Receivable

Loans Receivable	9 Months Ended
	Sep. 30, 2023
Receivables [Abstract]
Loans Receivable	Loans Receivable The following table shows a summary of our loans receivable at amortized cost basis at September 30, 2023 and December 31, 2022 (in thousands): September 30, 2023 December 31, 2022 Originated (1) Acquired (2) Total Originated (1) Acquired (2) Total Personal Banking: Residential mortgage loans (3) $ 3,322,136 150,627 3,472,763 3,327,879 170,720 3,498,599 Home equity loans 1,126,675 132,090 1,258,765 1,131,641 166,033 1,297,674 Vehicle loans 1,969,029 70,670 2,039,699 1,965,385 91,398 2,056,783 Consumer loans 109,319 6,101 115,420 104,284 7,588 111,872 Total Personal Banking 6,527,159 359,488 6,886,647 6,529,189 435,739 6,964,928 Commercial Banking: Commercial real estate loans (4) 2,286,563 267,081 2,553,644 2,135,607 312,421 2,448,028 Commercial real estate loans - owner occupied 343,714 25,659 369,373 341,704 33,823 375,527 Commercial loans 1,463,159 37,450 1,500,609 1,082,914 49,055 1,131,969 Total Commercial Banking 4,093,436 330,190 4,423,626 3,560,225 395,299 3,955,524 Total loans receivable, gross 10,620,595 689,678 11,310,273 10,089,414 831,038 10,920,452 Allowance for credit losses (116,596) (8,245) (124,841) (107,379) (10,657) (118,036) Total loans receivable, net (5) $ 10,503,999 681,433 11,185,432 9,982,035 820,381 10,802,416 (1) Includes originated and loan pools purchased in an asset acquisition. (2) Includes loans subject to purchase accounting in a business combination. (3) Includes $10.2 million and $9.9 million of loans held-for-sale at September 30, 2023 and December 31, 2022, respectively. (4) Includes $435,000 and $0 of loans held-for-sale at September 30, 2023 and December 31, 2022, respectively. (5) Includes $71.5 million and $76.1 million of net unearned income, unamortized premiums and discounts and deferred fees and costs at September 30, 2023 and December 31, 2022, respectively. 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 quarter ended September 30, 2022 (in thousands): Balance as of September 30, 2022 Current period provision Charge-offs Recoveries Balance as of June 30, 2022 Allowance for Credit Losses Personal Banking: Residential mortgage loans $ 17,967 1,646 (166) 329 16,158 Home equity loans 5,448 341 (535) 410 5,232 Vehicle loans 17,004 1,576 (936) 626 15,738 Consumer loans 825 1,170 (1,405) 281 779 Total Personal Banking 41,244 4,733 (3,042) 1,646 37,907 Commercial Banking: Commercial real estate loans 49,649 5,117 (1,329) 6,220 39,641 Commercial real estate loans - owner occupied 4,087 (34) — 26 4,095 Commercial loans 14,839 (2,127) (243) 497 16,712 Total Commercial Banking 68,575 2,956 (1,572) 6,743 60,448 Total $ 109,819 7,689 (4,614) 8,389 98,355 Allowance for Credit Losses - off-balance sheet exposure Personal Banking: Residential mortgage loans $ 4 (2) — — 6 Home equity loans 74 10 — — 64 Total Personal Banking 78 8 — — 70 Commercial Banking: Commercial real estate loans 5,382 1,919 — — 3,463 Commercial real estate loans - owner occupied 287 (41) — — 328 Commercial loans 5,288 1,699 — — 3,589 Total Commercial Banking 10,957 3,577 — — 7,380 Total off-balance sheet exposure $ 11,035 3,585 — — 7,450 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 (1) 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 (1) The table above has been revised to reflect the correct ending balance for total off-balance-sheet exposure at December 31, 2022. We evaluated the effect of the revision, both qualitatively and quantitatively, and concluded that the impact of the revision was not material. 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, 2022 (in thousands): Balance as of September 30, 2022 Current period provision Charge-offs Recoveries Balance as of December 31, 2021 Allowance for Credit Losses Personal Banking: Residential mortgage loans $ 17,967 11,331 (1,487) 750 7,373 Home equity loans 5,448 127 (1,237) 1,258 5,300 Vehicle loans 17,004 2,159 (2,517) 1,879 15,483 Consumer loans 825 479 (3,459) 921 2,884 Total Personal Banking 41,244 14,096 (8,700) 4,808 31,040 Commercial Banking: Commercial real estate loans 49,649 (6,465) (6,745) 8,718 54,141 Commercial real estate loans - owner occupied 4,087 167 — 37 3,883 Commercial loans 14,839 1,039 (1,253) 1,876 13,177 Total Commercial Banking 68,575 (5,259) (7,998) 10,631 71,201 Total $ 109,819 8,837 (16,698) 15,439 102,241 Allowance for Credit Losses - Personal Banking: Residential mortgage loans $ 4 2 — — 2 Home equity loans 74 35 — — 39 Total Personal Banking 78 37 — — 41 Commercial Banking: Commercial real estate loans 5,382 4,501 — — 881 Commercial real estate loans - owner occupied 287 145 — — 142 Commercial loans 5,288 3,894 — — 1,394 Total Commercial Banking 10,957 8,540 — — 2,417 Total off-balance sheet exposure $ 11,035 8,577 — — 2,458 During the nine months ended September 30, 2022, the Company purchased a total of $182.8 million small business equipment finance loan pools and a total of $188.3 million one- to four-family jumbo mortgage loan pools. The following table provides information related to the loan portfolio by portfolio segment and by class of financing receivable at September 30, 2023 (in thousands): Total loans Allowance for Nonaccrual Loans 90 days past due and accruing Personal Banking: Residential mortgage loans $ 3,472,763 17,090 9,760 — Home equity loans 1,258,765 5,044 3,431 133 Vehicle loans 2,039,699 27,226 3,817 57 Consumer loans 115,420 1,202 281 500 Total Personal Banking 6,886,647 50,562 17,289 690 Commercial Banking: Commercial real estate loans 2,553,644 48,582 54,109 — Commercial real estate loans - owner occupied 369,373 3,479 1,071 — Commercial loans 1,500,609 22,218 4,185 38 Total Commercial Banking 4,423,626 74,279 59,365 38 Total $ 11,310,273 124,841 76,654 728 The following table provides information related to the loan portfolio by portfolio segment and by class of financing receivable at December 31, 2022, prior to the adoption of ASU 2022-02 (in thousands): Total loans Allowance for Nonaccrual Loans 90 days past due and accruing TDRs Allowance Additional Personal Banking: Residential mortgage loans $ 3,498,599 19,261 7,574 — 6,279 1,069 — Home equity loans 1,297,674 5,902 4,145 — 1,470 546 — Vehicle loans 2,056,783 23,059 3,771 2 — — — Consumer loans 111,872 665 256 405 — — — Total Personal Banking 6,964,928 48,887 15,746 407 7,749 1,615 — Commercial Banking: Commercial real estate loans 2,448,028 44,506 62,239 — 31,980 638 400 Commercial real estate loans - owner occupied 375,527 4,004 624 — 94 31 — Commercial loans 1,131,969 20,639 2,627 337 858 116 4 Total Commercial Banking 3,955,524 69,149 65,490 337 32,932 785 404 Total $ 10,920,452 118,036 81,236 744 40,681 2,400 404 (1) Includes $29.2 million of nonaccrual TDRs. 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 nine-month period ended September 30, 2023 (in thousands): September 30, 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 9,760 — 9,760 — Home equity loans 4,145 3,262 169 3,431 133 Vehicle loans 3,771 2,838 979 3,817 57 Consumer loans 256 281 — 281 500 Total Personal Banking 15,746 16,141 1,148 17,289 690 Commercial Banking: Commercial real estate loans 62,239 21,838 32,271 54,109 — Commercial real estate loans - owner occupied 624 1,071 — 1,071 — Commercial loans 2,627 3,828 357 4,185 38 Total Commercial Banking 65,490 26,737 32,628 59,365 38 Total $ 81,236 42,878 33,776 76,654 728 During the three and nine months ended September 30, 2023, we did not recognize any interest income on nonaccrual loans. The following table presents the amortized cost of our loans on nonaccrual status as of the year ended December 31, 2022 (in thousands): December 31, 2022 Nonaccrual loans at January 1, 2022 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 $ 10,402 7,574 — 7,574 — Home equity loans 5,758 3,887 258 4,145 — Vehicle loans 3,263 2,175 1,596 3,771 2 Consumer loans 675 256 — 256 405 Total Personal Banking 20,098 13,892 1,854 15,746 407 Commercial Banking: Commercial real estate loans 129,666 22,182 40,057 62,239 — Commercial real estate loans - owner occupied 1,233 624 — 624 — Commercial loans 7,474 2,024 603 2,627 337 Total Commercial Banking 138,373 24,830 40,660 65,490 337 Total $ 158,471 38,722 42,514 81,236 744 During the year ended December 31, 2022, we recognized $678,000 of interest income on nonaccrual and troubled debt restructuring loans. The following table presents the amortized cost basis of collateral-dependent loans by class of loans as of September 30, 2023 (in thousands): Real estate Total Commercial Banking: Commercial real estate loans $ 51,402 51,402 Commercial loans 160 160 Total Commercial Banking 51,562 51,562 Total $ 51,562 51,562 The following table presents the amortized cost basis of collateral-dependent loans by class of loans as of December 31, 2022 (in thousands): Real estate Equipment Total Personal Banking: Residential mortgage loans $ 569 — 569 Home equity loans 100 — 100 Total Personal Banking 669 — 669 Commercial Banking: Commercial real estate loans 57,056 — 57,056 Commercial loans 175 210 385 Total Commercial Banking 57,231 210 57,441 Total $ 57,900 210 58,110 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 as of September 30, 2023 that were both experiencing financial difficulty and modified during the periods indicated, 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, 2023 For the nine months ended September 30, 2023 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 $ 192 — 0.01 % 450 — 0.01 % Home equity loans 122 85 0.02 % 283 85 0.03 % Consumer loans — — — % — 3 0.00 % Total Personal Banking 314 85 0.01 % 733 88 0.01 % Commercial Banking: Commercial real estate loans — — — % 197 — 0.01 % Commercial loans 15 — 0.00 % 663 — 0.04 % Total Commercial Banking 15 — — % 860 — 0.02 % Total $ 329 85 0.00 % 1,593 88 0.01 % The Company has committed to lend additional amounts totaling $31,000 to the borrowers included in the previous table. 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, 2023 For the nine months ended September 30, 2023 Weighted-average interest rate reduction Weighted-average term extension in months Weighted-average interest rate reduction Weighted-average term extension in months Personal Banking: Residential mortgage loans — % 169 — 149 Home equity loans 5 % 112 5 % 96 Consumer loans — % — 12 % 356 Total Personal Banking 5 % 140 17 % 126 Commercial Banking: Commercial real estate loans — % — — 25 Commercial loans — % 23 — 9 Total Commercial Banking — % 23 — 13 Total loans 5 % 135 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 that such loans have been modified since the adoption of ASU 2022-02 (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 real estate loans - owner occupied — — — — 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 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 tables provide a roll forward of troubled debt restructurings for the periods indicated, prior to the adoption of ASU 2022-02 (dollars in thousands): For the quarter ended September 30, 2022 For the nine months ended September 30, 2022 Number of Contracts Amount Number of Contracts Amount Beginning TDR balance: 128 $ 54,237 134 $ 30,288 New TDRs 6 221 8 25,626 Re-modified TDRs 4 977 10 1,178 Net paydowns — (810) — (1,609) Charge-offs: Residential mortgage loans — — 1 (3) Paid-off loans: Residential mortgage loans 1 (35) 2 (236) Home equity loans 1 (11) 3 (88) Commercial real estate loans 1 (3,349) 4 (3,718) Commercial real estate loans - owner occupied 1 (44) 1 (44) Commercial loans 3 (3,459) 4 (3,466) Ending TDR balance: 127 $ 46,750 127 $ 46,750 Accruing TDRs $ 16,344 $ 16,344 Nonaccrual TDRs 30,406 30,406 The following table provides information related to TDRs (including re-modified TDRs) by portfolio segment and by class of financing receivable during the periods indicated, prior to the adoption of ASU 2022-02 (dollars in thousands): For the quarter ended September 30, 2022 For the nine months ended September 30, 2022 Number of Recorded Current Current Number of Recorded Current Current Personal Banking: Residential mortgage loans 2 $ 147 144 15 2 $ 147 144 15 Home equity loans 5 160 154 23 5 160 154 23 Total Personal Banking 7 307 298 38 7 307 298 38 Commercial Banking: Commercial real estate loans 1 $ 610 609 89 5 $ 34,295 26,212 102 Commercial loans 2 332 291 20 6 3,856 294 20 Total Commercial Banking 3 942 900 109 11 38,151 26,506 122 Total 10 $ 1,249 1,198 147 18 $ 38,458 26,804 160 The following table provides information as of September 30, 2022 for TDRs (including re-modified TDRs) by type of modification, by portfolio segment and class of financing receivable for modifications during the quarter ended September 30, 2022, prior to the adoption of ASU 2022-02 (dollars in thousands): Type of modification Number of contracts Maturity date Total Personal Banking: Residential mortgage loans 2 $ 144 144 Home equity loans 5 154 154 Total Personal Banking 7 298 298 Commercial Banking: Commercial real estate loans 1 $ 609 609 Commercial loans 2 291 291 Total Commercial Banking 3 900 900 Total 10 $ 1,198 1,198 The following table provides information as of September 30, 2022 for TDRs (including re-modified TDRs) by type of modification, by portfolio segment and class of financing receivable for modifications during the nine months ended September 30, 2022, prior to the adoption of ASU 2022-02 (dollars in thousands): Type of modification Number of contracts Rate Maturity date Total Personal Banking: Residential mortgage loans 2 $ — 144 144 Home equity loans 5 — 154 154 Total Personal Banking 7 — 298 298 Commercial Banking: Commercial real estate loans 5 $ 4,166 22,046 26,212 Commercial loans 6 — 294 294 Total Commercial Banking 11 4,166 22,340 26,506 Total 18 $ 4,166 22,638 26,804 No TDRs modified within the previous twelve months of September 30, 2022 subsequently defaulted, prior to the adoption of ASU 2022-02. The following table provides information related to the amortized cost basis of loan payment delinquencies at September 30, 2023 (in thousands): 30-59 days 60-89 days 90 days or Total Current Total loans 90 days or Personal Banking: Residential mortgage loans $ 573 5,395 7,695 13,663 3,459,100 3,472,763 — Home equity loans 4,707 1,341 2,206 8,254 1,250,511 1,258,765 133 Vehicle loans 9,122 2,412 2,274 13,808 2,025,891 2,039,699 57 Consumer loans 752 295 746 1,793 113,627 115,420 500 Total Personal Banking 15,154 9,443 12,921 37,518 6,849,129 6,886,647 690 Commercial Banking: Commercial real estate loans 3,411 1,328 8,042 12,781 2,540,863 2,553,644 — Commercial real estate loans - owner occupied — 260 374 634 368,739 369,373 — Commercial loans 2,847 981 2,472 6,300 1,494,309 1,500,609 38 Total Commercial Banking 6,258 2,569 10,888 19,715 4,403,911 4,423,626 38 Total loans $ 21,412 12,012 23,809 57,233 11,253,040 11,310,273 728 The following table provides information related to the amortized cost basis of loan payment delinquencies at December 31, 2022 (in thousands): 30-59 days 60-89 days 90 days or Total Current Total loans 90 days or Personal Banking: Residential mortgage loans $ 29,487 5,563 5,574 40,624 3,457,975 3,498,599 — Home equity loans 6,657 975 2,257 9,889 1,287,785 1,297,674 — Vehicle loans 8,677 2,770 2,471 13,918 2,042,865 2,056,783 2 Consumer loans 758 300 608 1,666 110,206 111,872 405 Total Personal Banking 45,579 9,608 10,910 66,097 6,898,831 6,964,928 407 Commercial Banking: Commercial real estate loans 3,947 2,377 7,589 13,913 2,434,115 2,448,028 — Commercial real estate loans - owner occupied 61 — 278 339 375,188 375,527 — Commercial loans 2,648 1,115 1,829 5,592 1,126,377 1,131,969 337 Total Commercial Banking 6,656 3,492 9,696 19,844 3,935,680 3,955,524 337 Total originated loans $ 52,235 13,100 20,606 85,941 10,834,511 10,920,452 744 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, 2023 (in thousands): YTD September 30, 2023 2022 2021 2020 2019 Prior Revolving loans Revolving loans converted to term loans Total loans Personal Banking: Residential mortgage loans Pass $ 159,472 673,235 803,613 516,270 249,797 1,056,864 — — 3,459,251 Substandard — 1,033 260 872 336 11,011 — — 13,512 Total residential mortgage loans 159,472 674,268 803,873 517,142 250,133 1,067,875 — — 3,472,763 Residential mortgage current period charge-offs — — (5) (130) — (788) — — (923) Home equity loans Pass 65,795 104,272 110,823 153,431 98,062 210,273 469,459 42,870 1,254,985 Substandard — — — — 149 1,783 1,050 798 3,780 Total home equity loans 65,795 104,272 110,823 153,431 98,211 212,056 470,509 43,668 1,258,765 Home equity current period charge-offs — (53) (46) — (48) (257) (142) (173) (719) Vehicle loans Pass 541,270 746,225 444,934 153,264 81,931 68,201 — — 2,035,825 Substandard 320 901 1,386 247 564 456 — — 3,874 Total vehicle loans 541,590 747,126 446,320 153,511 82,495 68,657 — — 2,039,699 Vehicle current period charge-offs (324) (1,385) (1,425) (416) (497) (684) — — (4,731) Consumer loans Pass 20,061 13,137 6,361 2,485 1,727 6,201 63,801 866 114,639 Substandard 45 57 31 8 14 1 506 119 781 Total consumer loans 20,106 13,194 6,392 2,493 1,741 6,202 64,307 985 115,420 Consumer loan current period charge-offs (2,055) (340) (271) (116) (150) (766) (149) (13) (3,860) Total Personal Banking 786,963 1,538,860 1,367,408 826,577 432,580 1,354,790 534,816 44,653 6,886,647 Business Banking: Commercial real estate loans Pass 127,229 437,503 356,152 330,522 225,478 776,377 23,845 25,345 2,302,451 Special mention — 7,451 26,749 21,732 5,615 34,909 350 — 96,806 Substandard — 174 1,056 8,108 48,592 95,825 514 118 154,387 Total commercial real estate loans 127,229 445,128 383,957 360,362 279,685 907,111 24,709 25,463 2,553,644 Commercial real estate current period charge-offs — — (492) — (51) (1,013) — — (1,556) Commercial real estate loans - owner occupied Pass 17,830 50,716 48,567 14,845 44,834 148,778 2,237 2,214 330,021 Special mention — 17,631 — 1,690 — 7,808 — — 27,129 Substandard — — 122 1,344 4,736 5,308 — 713 12,223 Total commercial real estate loans - owner occupied 17,830 68,347 48,689 17,879 49,570 161,894 2,237 2,927 369,373 Commercial real estate - owner occupied current period charge-offs — — — — — (68) — — (68) Commercial loans Pass 315,190 455,098 77,266 28,754 37,787 56,731 501,722 4,285 1,476,833 Special mention 542 315 58 369 316 68 2,022 — 3,690 Substandard — 2,496 577 495 2,503 1,025 11,730 1,260 20,086 Total commercial loans 315,732 457,909 77,901 29,618 40,606 57,824 515,474 5,545 1,500,609 Commercial loans current period charge-offs — (1,526) (517) (430) (110) (715) (60) (2) (3,360) Total Business Banking 460,791 971,384 510,547 407,859 369,861 1,126,829 542,420 33,935 4,423,626 Total loans $ 1,247,754 2,510,244 1,877,955 1,234,436 802,441 2,481,619 1,077,236 78,588 11,310,273 For the nine months ended September 30, 2023, $13.7 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, 2022 (in thousands): 2022 2021 2020 2019 2018 Prior Revolving loans Revolving loans converted to term loans Total loans Personal Banking: Residential mortgage loans Pass $ 659,930 837,823 546,604 265,520 131,599 1,043,394 — — 3,484,870 Substandard 422 187 474 796 531 11,319 — — 13,729 Total residential mortgage loans 660,352 838,010 547,078 266,316 132,130 1,054,713 — — 3,498,599 Home equity loans Pass 114,598 126,608 173,044 110,495 50,314 198,971 475,229 42,887 1,292,146 Substandard — 46 — 127 324 3,066 683 1,282 5,528 Total home equity loans 114,598 126,654 173,044 110,622 50,638 202,037 475,912 44,169 1,297,674 Vehicle loans Pass 966,432 611,310 227,897 135,134 70,071 42,166 — — 2,053,010 Substandard 292 1,096 667 689 657 372 — — 3,773 Total vehicle loans 966,724 612,406 228,564 135,823 70,728 42,538 — — 2,056,783 Consumer loans Pass 19,302 9,874 4,327 3,557 2,409 5,094 65,610 1,037 111,210 Substandard 24 9 37 9 3 48 432 100 662 Total consumer loans 19,326 9,883 4,364 3,566 2,412 5,142 66,042 1,137 111,872 Total Personal Banking 1,761,000 1,586,953 953,050 516,327 255,908 1,304,430 541,954 45,306 6,964,928 Business Banking: Commercial real estate loans Pass 322,050 346,355 369,868 244,188 209,500 696,628 24,954 13,314 2,226,857 Special mention — 17,216 16,782 87 1,000 15,887 157 15 51,144 Substandard — 4,561 3,617 48,879 41,521 70,384 459 606 170,027 Total commercial real estate loans 322,050 368,132 390,267 293,154 252,021 782,899 25,570 13,935 2,448,028 Commercial real estate - owner occupied Pass 62,905 51,673 17,989 49,600 43,570 123,278 2,477 1,460 352,952 Special mention 126 — 18 — 2,297 1,106 385 — 3,932 Substandard — — — 5,085 2,440 9,250 — 1,868 18,643 Total commercial real estate - owner occupied loans 63,031 51,673 18,007 54,685 48,307 133,634 2,862 3,328 375,527 Commercial loans Pass 481,797 90,320 52,833 46,966 17,250 53,107 354,402 4,032 1,100,707 Special mention 628 2,190 506 1,704 227 — 2,129 — 7,384 Substandard 1,833 603 908 2,097 1,605 735 12,941 3,156 23,878 Total commercial loans 484,258 93,113 54,247 50,767 19,082 53,842 369,472 7,188 1,131,969 Total Business Banking 869,339 512,918 462,521 398,606 319,410 970,375 397,904 24,451 3,955,524 Total loans $ 2,630,339 2,099,871 1,415,571 914,933 575,318 2,274,805 939,858 69,757 10,920,452 For the year ended December 31, 2022, $20.7 million of revolving loans were converted to term loans.

Goodwill and Other Intangible A

Goodwill and Other Intangible Assets	9 Months Ended
	Sep. 30, 2023
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, 2023 December 31, 2022 Amortizable intangible assets: Core deposit intangibles - gross $ 74,899 74,899 Less: accumulated amortization (68,886) (66,367) Core deposit intangibles - net $ 6,013 8,532 Customer and Contract intangible assets - gross $ 12,775 12,775 Less: accumulated amortization (12,775) (12,747) Customer and Contract intangible assets - net — 28 Total intangible assets - net $ 6,013 8,560 The following table shows the actual aggregate amortization expense for the quarters ended September 30, 2023 and 2022, as well as the estimated aggregate amortization expense, based upon current levels of intangible assets, for the current fiscal year and each of the five succeeding fiscal years (in thousands): For the quarter ended September 30, 2023 $ 795 For the quarter ended September 30, 2022 1,047 For the nine months ended September 30, 2023 2,546 For the nine months ended September 30, 2022 3,345 For the year ending December 31, 2023 3,270 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 305 The following table provides information for the changes in the carrying amount of goodwill (in thousands): Total Balance at December 31, 2022 $ 380,997 Balance at September 30, 2023 $ 380,997

Borrowed Funds

Borrowed Funds	9 Months Ended
	Sep. 30, 2023
Debt Disclosure [Abstract]
Borrowed Funds	Borrowed Funds (a) Borrowings Borrowed funds at September 30, 2023 and December 31, 2022 are presented in the following table: September 30, 2023 December 31, 2022 Amount Average rate Amount Average rate Term notes payable to the FHLB of Pittsburgh, due within one year $ 375,400 5.65 % $ 500,000 4.55 % Notes payable to the FHLB of Pittsburgh, due within one year 119,000 5.68 % 51,300 4.45 % Collateralized borrowings, due within one year 48,587 1.52 % 105,766 0.27 % Collateral received, due within one year 61,600 5.16 % 24,100 4.17 % Total borrowed funds $ 604,587 $ 681,166 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, 2023, the carrying value of these loans was $6.049 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 $250.0 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, 2023 and December 31, 2022, the balance of the revolving line of credit was $119.0 million and $51.3 million, respectively. At September 30, 2023 and December 31, 2022, collateralized borrowings due within one year were $48.6 million and $105.8 million, respectively. These borrowings are collateralized by cash or various securities held in safekeeping by the FHLB. At September 30, 2023, the carrying value of the cash and securities used as collateral was $89.3 million. At September 30, 2023 and December 31, 2022, collateral received was $61.6 million and $24.1 million, respectively. This represents collateral posted to us from our derivative counterparties. At September 30, 2023 and December 31, 2022, term notes payable to the FHLB of Pittsburgh due within one year were $375.4 million and $500.0 million, respectively. The September 30, 2023 total is made up of ten advances: 400,000 at 5.72% maturing October 2, 2023; $100.0 million at 5.65% maturing October 6, 2023; $100.0 million at 5.65% maturing October 13, 2023; $25.0 million at 5.63% maturing October 26, 2023; $25.0 million at 5.66% maturing October 31, 2023; $25.0 million at 5.63% maturing November 9, 2023; $25.0 million at 5.65% maturing November 13, 2023; $25.0 million at 5.62% maturing November 14, 2023; $25.0 million at 5.63% maturing November 21, 2023; and $25.0 million at 5.65% maturing November 30, 2023. On September 9, 2020, the Company issued $125.0 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, 2022 the Company repurchased $10.2 million of subordinated notes leaving $114.8 million of subordinated notes outstanding. The subordinated debt issuance costs of approximately $1.8 million are being amortized over five years on a straight-line basis into interest expense. At September 30, 2023 and December 31, 2022, subordinated debentures, net of issuance costs, were $114.1 million and $113.8 million, respectively. (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, 2023 December 31, 2022 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 7,993 7,975 Union National Capital Trust II (1) November 23, 2034 3-month SOFR plus 2.00% 3,000 2,789 2,768 MFBC Statutory Trust I (1) September 15, 2035 3-month SOFR plus 1.70% 5,000 3,762 3,684 Universal Preferred Trust (1) October 7, 2035 3-month SOFR plus 1.69% 5,000 3,752 3,674 $ 129,509 129,314 (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. 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, 2023
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, 2023, the maximum potential amount of future payments we could be required to make under these non-recourse standby letters of credit was $45.9 million, of which $28.7 million is fully collateralized. At September 30, 2023, we had a liability which represents deferred income of $1.0 million related to the standby letters of credit.

Earnings Per Share

Earnings Per Share	9 Months Ended
	Sep. 30, 2023
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 reflects the potential dilution that could occur if securities or other contracts to issue common stock were exercised or converted into common stock or resulted in the issuance of common stock that then shared in the earnings of the Company. 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, 2023 2022 2023 2022 Net income $ 39,220 37,304 105,943 99,017 Less: Dividends and undistributed earnings allocated to participating securities 99 166 267 441 Net income available to common shareholders $ 39,121 37,138 105,676 98,576 Weighted average common shares outstanding 126,767,507 126,320,706 126,629,786 126,082,217 Add: Participating shares outstanding 320,177 565,729 320,177 565,729 Total weighted average common shares and dilutive potential shares 127,087,684 126,886,435 126,949,963 126,647,946 Basic earnings per share $ 0.31 0.29 0.83 0.78 Diluted earnings per share $ 0.31 0.29 0.83 0.78

Pension and Other Post-Retireme

Pension and Other Post-Retirement Benefits	9 Months Ended
	Sep. 30, 2023
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 2023 2022 2023 2022 Service cost $ 1,560 2,599 — — Interest cost 2,245 1,671 7 10 Expected return on plan assets (3,479) (3,864) — — Amortization of prior service cost (564) (564) — — Amortization of the net loss 20 381 10 2 Net periodic cost $ (218) 223 17 12 Nine months ended September 30, Pension benefits Other post-retirement benefits 2023 2022 2023 2022 Service cost $ 4,680 7,797 — — Interest cost 6,735 5,013 21 30 Expected return on plan assets (10,437) (11,592) — — Amortization of prior service cost (1,692) (1,692) — — Amortization of the net loss 60 1,143 30 6 Net periodic cost $ (654) 669 51 36 Because of the current funding status, we do not anticipate a funding requirement during the year ending December 31, 2023.

Disclosures About Fair Value of

Disclosures About Fair Value of Financial Instruments	9 Months Ended
	Sep. 30, 2023
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, residential mortgage 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, 2023 and December 31, 2022, 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, 2023 (in thousands): Carrying Estimated Level 1 Level 2 Level 3 Financial assets: Cash and cash equivalents $ 161,995 161,995 161,995 — — Securities available-for-sale 1,010,076 1,010,076 — 1,010,076 — Securities held-to-maturity 830,106 682,681 — 682,681 — Loans receivable, net 11,174,840 10,031,968 — — 10,031,968 Loans held-for-sale 10,592 10,592 — — 10,592 Accrued interest receivable 42,624 42,624 42,624 — — Interest rate lock commitments 664 664 — — 664 Foreign exchange swaps 203 203 — 203 — Interest rate swaps designated as hedging instruments 4,603 4,603 — 4,603 — Interest rate swaps not designated as hedging instruments 57,249 57,249 — 57,249 — FHLB stock 40,404 40,404 — — — Total financial assets $ 13,333,356 12,043,059 204,619 1,754,812 10,043,224 Financial liabilities: Savings and checking deposits $ 9,531,544 9,531,544 9,531,544 — — Time deposits 2,258,338 2,250,768 — — 2,250,768 Borrowed funds 604,587 617,832 617,832 — — Subordinated debt 114,102 102,456 — 102,456 — Junior subordinated debentures 129,509 136,461 — — 136,461 Forward commitments 23 23 — 23 — Foreign exchange swaps 10 10 — 10 — Interest rate swaps not designated as hedging instruments 57,275 57,275 — 57,275 — Risk participation agreements 17 17 — 17 — Accrued interest payable 7,915 7,915 7,915 — — Total financial liabilities $ 12,703,320 12,704,301 10,157,291 159,781 2,387,229 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, 2022 (in thousands): Carrying Estimated Level 1 Level 2 Level 3 Financial assets: Cash and cash equivalents $ 139,365 139,365 139,365 — — Securities available-for-sale 1,218,108 1,218,108 — 1,218,108 — Securities held-to-maturity 881,249 751,384 — 751,384 — Loans receivable, net 10,792,503 9,910,852 — — 9,910,852 Residential mortgage loans held-for-sale 9,913 9,913 — — 9,913 Accrued interest receivable 35,528 35,528 35,528 — — Interest rate lock commitments 559 559 — — 559 Forward commitments 128 128 — 128 — Interest rate swaps not designated as hedging instruments 26,642 26,642 — 26,642 — FHLB stock 40,143 40,143 — — — Total financial assets $ 13,144,138 12,132,622 174,893 1,996,262 9,921,324 Financial liabilities: Savings and checking accounts $ 10,412,263 10,412,263 10,412,263 — — Time deposits 1,052,285 1,059,790 — — 1,059,790 Borrowed funds 681,166 680,996 680,996 — — Subordinated debt 113,840 102,554 — 102,554 — Junior subordinated debentures 129,314 133,546 — — 133,546 Foreign exchange swaps 23 23 — 23 — Interest rate swaps not designated as hedging instruments 45,464 45,464 — 45,464 — Risk participation agreements 18 18 — 18 — Accrued interest payable 3,231 3,231 3,231 — — Total financial liabilities $ 12,437,604 12,437,885 11,096,490 148,059 1,193,336 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, 2023 and December 31, 2022. The following table represents assets and liabilities measured at fair value on a recurring basis at September 30, 2023 (in thousands): Level 1 Level 2 Level 3 Total assets Debt securities: U.S. government and agencies $ — 56,526 — 56,526 Government-sponsored enterprises — 38,906 — 38,906 States and political subdivisions — 68,071 — 68,071 Corporate — 7,464 — 7,464 Total debt securities — 170,967 — 170,967 Residential mortgage-backed securities: GNMA — 17,073 — 17,073 FNMA — 99,874 — 99,874 FHLMC — 68,926 — 68,926 Non-agency — 5 — 5 Collateralized mortgage obligations: GNMA — 318,652 — 318,652 FNMA — 148,389 — 148,389 FHLMC — 186,190 — 186,190 Total mortgage-backed securities — 839,109 — 839,109 Interest rate lock commitments — — 664 664 Foreign exchange swaps — 203 — 203 Interest rate swaps designated as hedging instruments — 4,603 — 4,603 Interest rate swaps not designated as hedging instruments — 57,249 — 57,249 Total assets $ — 1,072,131 664 1,072,795 Forward commitments $ — 23 — 23 Foreign exchange swaps — 10 — 10 Interest rate swaps not designated as hedging instruments — 57,275 — 57,275 Risk participation agreements — 17 — 17 Total liabilities $ — 57,325 — 57,325 The following table represents assets and liabilities measured at fair value on a recurring basis at December 31, 2022 (in thousands): Level 1 Level 2 Level 3 Total assets Debt securities: U.S. government and agencies $ — 60,592 — 60,592 Government-sponsored enterprises — 39,201 — 39,201 States and political subdivisions — 111,766 — 111,766 Corporate — 12,978 — 12,978 Total debt securities — 224,537 — 224,537 Residential mortgage-backed securities: GNMA — 12,434 — 12,434 FNMA — 117,218 — 117,218 FHLMC — 74,991 — 74,991 Non-agency — 6 — 6 Collateralized mortgage obligations: GNMA — 364,553 — 364,553 FNMA — 185,588 — 185,588 FHLMC — 238,781 — 238,781 Total mortgage-backed securities — 993,571 — 993,571 Interest rate lock commitments — — 559 559 Forward commitments — 128 — 128 Interest rate swaps not designated as hedging instruments — 26,642 — 26,642 Total assets $ — 1,244,878 559 1,245,437 Foreign exchange swaps $ — 23 — 23 Interest rate swaps not designated as hedging instruments — 45,464 — 45,464 Risk participation agreements — 18 — 18 Total liabilities $ — 45,505 — 45,505 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, 2023 2022 2023 2022 Beginning balance, $ 761 1,520 559 1,684 Interest rate lock commitments: Net activity (97) (457) 105 (621) Ending balance $ 664 1,063 664 1,063 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, 2023 (in thousands): Level 1 Level 2 Level 3 Total assets Loans individually assessed $ — — 13,467 13,467 Mortgage servicing rights — — 198 198 Real estate owned, net — — 363 363 Total assets $ — — 14,028 14,028 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, 2022 (in thousands): Level 1 Level 2 Level 3 Total assets Loans individually assessed $ — — 15,416 15,416 Mortgage servicing rights — — 95 95 Real estate owned, net — — 413 413 Total assets $ — — 15,924 15,924 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 2022 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, 2023 (in thousands): Fair value Valuation techniques Significant Range (weighted average) Loans individually assessed $ 13,467 Appraisal value (1) Estimated cost to sell 10.0% Mortgage servicing rights 198 Discounted cash flow Annual service cost $90 Prepayment rate 6.6% to 15.0% (9.9%) Expected life (months) 53.1 to 103.5 (75.8) Option adjusted spread 720 basis points Forward yield curve 5.44% to 5.60% Real estate owned, net 363 Appraisal value (1) Estimated cost to sell 15.0% Loans held for sale 10,592 Quoted prices for similar loans in active markets adjusted by an expected pull-through rate Estimated pull-through rate 100.0% (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, 2023
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 As of September 30, 2023, the Company has 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 for the periods indicated (in thousands): Asset derivatives Liability derivatives Notional amount Fair value Notional amount Fair value At September 30, 2023 Derivatives designated as hedging instruments: Interest rate swap agreements $ 175,000 4,603 — — Derivatives not designated as hedging instruments: Interest rate swap agreements 673,255 57,249 673,255 57,275 Foreign exchange swap agreements 7,393 203 760 10 Interest rate lock commitments 35,272 664 — — Forward commitments — — 6,772 23 Risk participation agreements — — 102,385 17 Total Derivatives $ 890,920 62,719 783,172 57,325 At December 31, 2022 Derivatives not designated as hedging instruments: Interest rate swap agreements $ 651,114 26,642 651,114 45,464 Foreign exchange swap agreements — — 2,328 23 Interest rate lock commitments 19,727 559 — — Forward commitments 4,909 128 — — Risk participation agreements — — 114,159 18 Total derivatives $ 675,750 27,329 767,601 45,505 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, 2023 2022 2023 2022 Hedging derivatives: Decrease in interest expense $ 627 — 831 — Non-hedging swap derivatives: Increase/(decrease) in other income $ 203 93 (127) 207 (Decrease)/increase in mortgage banking income $ (221) 809 (46) 1,131 The following table presents information regarding our derivative financial instruments designated as hedging for the quarter ended September 30, 2023 (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 3.52 % $ (540) 5/11/2027 43 Issued May 12, 2023 25,000 3.54 % (528) 5/12/2028 55 Issued May 19, 2023 25,000 3.84 % (454) 11/19/2027 50 Issued May 31, 2023 25,000 4.08 % (400) 11/30/2026 38 Issued July 26, 2023 25,000 4.24 % (348) 7/26/2028 58 Issued July 31, 2023 25,000 4.36 % (330) 1/31/2028 52 Issued August 9, 2023 25,000 4.32 % (333) 8/9/2027 46 Total $ 175,000 $ (2,933)

Legal Proceedings

Legal Proceedings	9 Months Ended
	Sep. 30, 2023
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, 2023, 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, 2023
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, 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 (1) (2) (29,715) 1,825 — (27,890) Amounts reclassified from accumulated other comprehensive income (3) — — (382) (382) Net other comprehensive (loss)/income (29,715) 1,825 (382) (28,272) Balance as of September 30, 2023 $ (192,987) 3,562 (8,098) (197,523) For the quarter ended September 30, 2022 Unrealized Change in Total Balance as of June 30, 2022 $ (117,056) (25,574) (142,630) Other comprehensive loss before reclassification adjustments (4) (48,387) — (48,387) Amounts reclassified from accumulated other comprehensive income (5) — (131) (131) Net other comprehensive loss (48,387) (131) (48,518) Balance as of September 30, 2022 $ (165,443) (25,705) (191,148) (1) Consists of unrealized holding losses, net of tax of $9,140. (2) Change in fair value of interest rate swaps, net of tax ($533). (3) Consists of realized gains, net of tax of $152. (4) Consists of unrealized holding losses, net of tax $14,705. (5) Consists of realized gains, net of tax of $50. 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)/income before reclassification adjustments (1) (3) (34,417) 3,562 — (30,855) Amounts reclassified from accumulated other comprehensive income (2) (4) 5,636 — (1,146) 4,490 Net other comprehensive income/(loss) (28,781) 3,562 (1,146) (26,365) Balance as of September 30, 2023 $ (192,987) 3,562 (8,098) (197,523) For the nine months ended September 30, 2022 Unrealized Change in Total Balance as of December 31, 2021 $ (12,317) (25,312) (37,629) Other comprehensive loss before reclassification adjustments (5) (153,124) — (153,124) Amounts reclassified from accumulated other comprehensive income (6) (7) (2) (393) (395) Net other comprehensive loss (153,126) (393) (153,519) Balance as of September 30, 2022 $ (165,443) (25,705) (191,148) (1) Consists of unrealized holding losses, net of tax of $9,603. (2) Consists of realized losses, net of tax of ($1,731). (3) Change in fair value of interest rate swaps, net of tax ($1,041). (4) Consists of realized gains, net of tax of $456. (5) Consists of unrealized holding losses, net of tax $45,555. (6) Consists of realized losses, net of tax $0. (7) Consists of realized gains, net of tax of $151.

Pay vs Performance Disclosure

Pay vs Performance Disclosure - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Pay vs Performance Disclosure
Net Income (loss)	$ 39,220	$ 37,304	$ 105,943	$ 99,017

Insider Trading Arrangements

Insider Trading Arrangements	3 Months Ended
	Sep. 30, 2023
Trading Arrangements, by Individual
Rule 10b5-1 Arrangement Adopted	false
Non-Rule 10b5-1 Arrangement Adopted	false
Rule 10b5-1 Arrangement Terminated	false
Non-Rule 10b5-1 Arrangement Terminated	false

Basis of Presentation and Inf_2

Basis of Presentation and Informational Disclosures (Policies)	9 Months Ended
	Sep. 30, 2023
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 142 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 MutualFirst 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, 2022 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. These reclassifications had no effect on the reported results of operations. An adjustment has been made to the Consolidated Statements of Income and Consolidated Statements of Cash Flows for the quarter and nine months ended September 30, 2022, to reclassify the provision for credit losses - unfunded commitments, previously presented in other expense, to provide additional transparency to financial statement users.
Income Taxes - Uncertain Tax Positions	Income Taxes-Uncertain Tax Positions Accounting standards prescribe a comprehensive model for how a company should recognize, measure, present and disclose in its financial statements uncertain tax positions that the company has taken or expects to take on a tax return. A tax benefit from an uncertain position may be recognized only if it is “more likely than not” that the position is sustainable, based on its technical merits. The tax benefit of a qualifying position is the largest amount of tax benefit that is greater than 50% likely of being realized upon ultimate settlement with a taxing authority having full knowledge of all relevant information. We had $702,000 and $473,000 of liability for unrecognized tax benefits as of September 30, 2023 and December 31, 2022. We recognize interest accrued related to: (1) unrecognized tax benefits in other expenses and (2) refund claims in other operating income. We recognize penalties (if any) in other expenses. We are subject to audit by the Internal Revenue Service and any state in which we conduct business for the tax periods ended December 31, 2022, 2021, 2020 and 2019.
Recently Adopted Accounting Standards	Recently Adopted Accounting Standards In March 2022, the Financial Accounting Standards Board ( “ FASB ” ) issued Accounting Standards Update ( “ ASU ” ) No. 2022-02, “Financial Instruments - Credit Losses (Topic 326): Troubled Debt Restructurings and Vintage Disclosure.” This ASU eliminates the accounting guidance for troubled debt restructurings ( “ TDRs ” ), while enhancing disclosure requirements for certain loan modifications when a borrower is experiencing financial difficulty. This ASU also requires the disclosure of current period gross write-offs by year for origination for financing receivables. This guidance is effective for annual periods beginning after December 15, 2022, including interim periods within those years, with early adoption permitted. This ASU is applied prospectively to modifications and write-offs beginning on the first day of the fiscal year of adoption. An entity may elect to adopt a modified retrospective transition method on the recognition and measurement of the TDR guidance. We adopted ASU 2022-02 using a modified retrospective transition approach related to the recognition and measurement of the TDR guidance and on a prospective basis for modification and write-offs. As a result, the Company was not required to adjust its comparative period financial information for effects of the standard or make the new required ASU 2022-02 disclosure for periods before the date of adoption (i.e. January 1, 2023). This change did not have a material effect on our consolidated financial statements. In March 2020, the FASB issued ASU No. 2020-04, “ Facilitation of the Effects of Reference Rate Reform on Financial Reporting .” This ASU provides temporary optional guidance on contract modifications and hedge accounting to ease the financial reporting burdens of the expected market transition from LIBOR and other interbank offered rates to alternative reference rates. The guidance provides expedients and exceptions for applying GAAP to transactions affected by reference rate reform if certain criteria are met. The amendments primarily include contract modifications and hedge accounting, as well as providing a one-time election for the sale or transfer of debt securities classified as held-to-maturity. This guidance was effective as of March 12, 2020 through December 31, 2022. In December 2022, the FASB issued ASU No. 2022-06, “Reference Rate Reform (Topic 848): Deferral of the Sunset Date to Topic 848”. This guidance extends the guidance of ASU 2022-04 from December 31, 2022 to December 31, 2024. In January 2021, the FASB issued ASU No. 2021-01, “Reference Rate Reform.” This ASU provides amendments, which are elective, and apply to all entities that have derivative instruments that use an interest rate for margining, discounting or contract price alignment of certain derivative instruments that are modified as a result of the reference rate reform. This ASU is effective upon issuance through December 31, 2024, and can be adopted at any time during this period.

Marketable Securities (Tables)

Marketable Securities (Tables)	9 Months Ended
	Sep. 30, 2023
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, 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 — (1,750) 18,250 Due after ten years 50,166 — (11,890) 38,276 Debt issued by government-sponsored enterprises: Due after one year through five years 45,985 — (7,502) 38,483 Due after five years through ten years 434 — (11) 423 Municipal securities: Due after one year through five years 954 3 (9) 948 Due after five years through ten years 21,976 — (3,055) 18,921 Due after ten years 62,990 — (14,788) 48,202 Corporate debt issues: Due after five years through ten years 8,464 — (1,000) 7,464 Residential mortgage-backed securities: Fixed rate pass-through 213,849 — (35,305) 178,544 Variable rate pass-through 7,501 2 (169) 7,334 Fixed rate agency CMOs 805,086 — (175,985) 629,101 Variable rate agency CMOs 24,675 28 (573) 24,130 Total residential mortgage-backed securities 1,051,111 30 (212,032) 839,109 Total marketable securities available-for-sale $ 1,262,080 33 (252,037) 1,010,076 The following table shows the portfolio of marketable securities available-for-sale at December 31, 2022 (in thousands): Amortized Gross Gross Fair Debt issued by the U.S. government and agencies: Due after one year through five years $ 20,000 — (1,799) 18,201 Due after ten years 53,152 — (10,761) 42,391 Debt issued by government-sponsored enterprises: Due after one year through five years 993 — (49) 944 Due after five years through ten years 45,814 — (7,557) 38,257 Municipal securities: Due within one year 506 — (1) 505 Due after one year through five years 986 21 (13) 994 Due after five years through ten years 36,332 — (2,290) 34,042 Due after ten years 89,631 8 (13,414) 76,225 Corporate debt issues: Due after five years through ten years 13,540 — (562) 12,978 Residential mortgage-backed securities: Fixed rate pass-through 227,122 35 (31,171) 195,986 Variable rate pass-through 8,837 10 (184) 8,663 Fixed rate agency CMOs 906,962 — (145,284) 761,678 Variable rate agency CMOs 27,853 31 (640) 27,244 Total residential mortgage-backed securities 1,170,774 76 (177,279) 993,571 Total marketable securities available-for-sale $ 1,431,728 105 (213,725) 1,218,108
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, 2023 (in thousands): Amortized Gross Gross Fair Debt issued by government-sponsored enterprises: Due after one year through five years $ 49,471 — (6,830) 42,641 Due after five years through ten years 74,986 — (14,901) 60,085 Residential mortgage-backed securities: Fixed rate pass-through 151,411 — (27,070) 124,341 Variable rate pass-through 468 — (8) 460 Fixed rate agency CMOs 553,241 — (98,606) 454,635 Variable rate agency CMOs 529 — (10) 519 Total residential mortgage-backed securities 705,649 — (125,694) 579,955 Total marketable securities held-to-maturity $ 830,106 — (147,425) 682,681 The following table shows the portfolio of marketable securities held-to-maturity at December 31, 2022 (in thousands): Amortized Gross Gross Fair Debt issued by government-sponsored enterprises: Due after one year through five years $ 29,478 — (3,676) 25,802 Due after five years through ten years 94,977 — (18,157) 76,820 Residential mortgage-backed securities: Fixed rate pass-through 163,196 — (24,684) 138,512 Variable rate pass-through 542 — (12) 530 Fixed rate agency CMOs 592,527 — (83,325) 509,202 Variable rate agency CMOs 529 — (11) 518 Total residential mortgage-backed securities 756,794 — (108,032) 648,762 Total marketable securities held-to-maturity $ 881,249 — (129,865) 751,384
Information regarding the issuers and the carrying values of the entity's mortgage-backed securities	The following table shows the contractual maturity of our residential mortgage-backed securities available-for-sale at September 30, 2023 (in thousands): Amortized Fair Residential mortgage-backed securities: Due within one year $ 60 59 Due after one year through five years 25,302 23,185 Due after five years through ten years 27,837 25,424 Due after ten years 997,912 790,441 Total residential mortgage-backed securities $ 1,051,111 839,109 The following table shows the contractual maturity of our residential mortgage-backed securities held-to-maturity at September 30, 2023 (in thousands): Amortized Fair Residential mortgage-backed securities: Due after one year through five years $ 20,343 17,291 Due after five years through ten years 20,225 15,484 Due after ten years 665,081 547,180 Total residential mortgage-backed securities $ 705,649 579,955
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, 2023 (in thousands): Less than 12 months 12 months or more Total Fair Unrealized Fair Unrealized Fair Unrealized U.S. government-sponsored enterprises $ 423 (11) 197,736 (42,873) 198,159 (42,884) Municipal securities 8,412 (526) 59,233 (17,326) 67,645 (17,852) Corporate issues — — 7,464 (1,000) 7,464 (1,000) Residential mortgage-backed securities - agency 25,649 (1,271) 1,390,685 (336,455) 1,416,334 (337,726) Total $ 34,484 (1,808) 1,655,118 (397,654) 1,689,602 (399,462) 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, 2022 (in thousands): Less than 12 months 12 months or more Total Fair Unrealized Fair Unrealized Fair Unrealized U.S. government-sponsored enterprises $ 1,735 (82) 200,679 (41,917) 202,414 (41,999) Corporate debt issues 12,979 (562) — — 12,979 (562) Municipal securities 60,676 (4,047) 44,493 (11,671) 105,169 (15,718) Residential mortgage-backed securities - agency 373,186 (22,796) 1,264,042 (262,515) 1,637,228 (285,311) Total $ 448,576 (27,487) 1,509,214 (316,103) 1,957,790 (343,590)
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, 2023 (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, 2023. AA+ Total Held-to-maturity securities (at amortized cost): Debt issued by the U.S. government-sponsored enterprises $ 124,457 124,457 Residential mortgage-backed securities 705,649 705,649 Total marketable securities held-to-maturity $ 830,106 830,106

Loans Receivable (Tables)

Loans Receivable (Tables)	9 Months Ended
	Sep. 30, 2023
Receivables [Abstract]
Schedule of loans receivable	The following table shows a summary of our loans receivable at amortized cost basis at September 30, 2023 and December 31, 2022 (in thousands): September 30, 2023 December 31, 2022 Originated (1) Acquired (2) Total Originated (1) Acquired (2) Total Personal Banking: Residential mortgage loans (3) $ 3,322,136 150,627 3,472,763 3,327,879 170,720 3,498,599 Home equity loans 1,126,675 132,090 1,258,765 1,131,641 166,033 1,297,674 Vehicle loans 1,969,029 70,670 2,039,699 1,965,385 91,398 2,056,783 Consumer loans 109,319 6,101 115,420 104,284 7,588 111,872 Total Personal Banking 6,527,159 359,488 6,886,647 6,529,189 435,739 6,964,928 Commercial Banking: Commercial real estate loans (4) 2,286,563 267,081 2,553,644 2,135,607 312,421 2,448,028 Commercial real estate loans - owner occupied 343,714 25,659 369,373 341,704 33,823 375,527 Commercial loans 1,463,159 37,450 1,500,609 1,082,914 49,055 1,131,969 Total Commercial Banking 4,093,436 330,190 4,423,626 3,560,225 395,299 3,955,524 Total loans receivable, gross 10,620,595 689,678 11,310,273 10,089,414 831,038 10,920,452 Allowance for credit losses (116,596) (8,245) (124,841) (107,379) (10,657) (118,036) Total loans receivable, net (5) $ 10,503,999 681,433 11,185,432 9,982,035 820,381 10,802,416 (1) Includes originated and loan pools purchased in an asset acquisition. (2) Includes loans subject to purchase accounting in a business combination. (3) Includes $10.2 million and $9.9 million of loans held-for-sale at September 30, 2023 and December 31, 2022, respectively. (4) Includes $435,000 and $0 of loans held-for-sale at September 30, 2023 and December 31, 2022, respectively.
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, 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 quarter ended September 30, 2022 (in thousands): Balance as of September 30, 2022 Current period provision Charge-offs Recoveries Balance as of June 30, 2022 Allowance for Credit Losses Personal Banking: Residential mortgage loans $ 17,967 1,646 (166) 329 16,158 Home equity loans 5,448 341 (535) 410 5,232 Vehicle loans 17,004 1,576 (936) 626 15,738 Consumer loans 825 1,170 (1,405) 281 779 Total Personal Banking 41,244 4,733 (3,042) 1,646 37,907 Commercial Banking: Commercial real estate loans 49,649 5,117 (1,329) 6,220 39,641 Commercial real estate loans - owner occupied 4,087 (34) — 26 4,095 Commercial loans 14,839 (2,127) (243) 497 16,712 Total Commercial Banking 68,575 2,956 (1,572) 6,743 60,448 Total $ 109,819 7,689 (4,614) 8,389 98,355 Allowance for Credit Losses - off-balance sheet exposure Personal Banking: Residential mortgage loans $ 4 (2) — — 6 Home equity loans 74 10 — — 64 Total Personal Banking 78 8 — — 70 Commercial Banking: Commercial real estate loans 5,382 1,919 — — 3,463 Commercial real estate loans - owner occupied 287 (41) — — 328 Commercial loans 5,288 1,699 — — 3,589 Total Commercial Banking 10,957 3,577 — — 7,380 Total off-balance sheet exposure $ 11,035 3,585 — — 7,450 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 (1) 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 (1) The table above has been revised to reflect the correct ending balance for total off-balance-sheet exposure at December 31, 2022. We evaluated the effect of the revision, both qualitatively and quantitatively, and concluded that the impact of the revision was not material. 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, 2022 (in thousands): Balance as of September 30, 2022 Current period provision Charge-offs Recoveries Balance as of December 31, 2021 Allowance for Credit Losses Personal Banking: Residential mortgage loans $ 17,967 11,331 (1,487) 750 7,373 Home equity loans 5,448 127 (1,237) 1,258 5,300 Vehicle loans 17,004 2,159 (2,517) 1,879 15,483 Consumer loans 825 479 (3,459) 921 2,884 Total Personal Banking 41,244 14,096 (8,700) 4,808 31,040 Commercial Banking: Commercial real estate loans 49,649 (6,465) (6,745) 8,718 54,141 Commercial real estate loans - owner occupied 4,087 167 — 37 3,883 Commercial loans 14,839 1,039 (1,253) 1,876 13,177 Total Commercial Banking 68,575 (5,259) (7,998) 10,631 71,201 Total $ 109,819 8,837 (16,698) 15,439 102,241 Allowance for Credit Losses - Personal Banking: Residential mortgage loans $ 4 2 — — 2 Home equity loans 74 35 — — 39 Total Personal Banking 78 37 — — 41 Commercial Banking: Commercial real estate loans 5,382 4,501 — — 881 Commercial real estate loans - owner occupied 287 145 — — 142 Commercial loans 5,288 3,894 — — 1,394 Total Commercial Banking 10,957 8,540 — — 2,417 Total off-balance sheet exposure $ 11,035 8,577 — — 2,458
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, 2023 (in thousands): Total loans Allowance for Nonaccrual Loans 90 days past due and accruing Personal Banking: Residential mortgage loans $ 3,472,763 17,090 9,760 — Home equity loans 1,258,765 5,044 3,431 133 Vehicle loans 2,039,699 27,226 3,817 57 Consumer loans 115,420 1,202 281 500 Total Personal Banking 6,886,647 50,562 17,289 690 Commercial Banking: Commercial real estate loans 2,553,644 48,582 54,109 — Commercial real estate loans - owner occupied 369,373 3,479 1,071 — Commercial loans 1,500,609 22,218 4,185 38 Total Commercial Banking 4,423,626 74,279 59,365 38 Total $ 11,310,273 124,841 76,654 728 The following table provides information related to the loan portfolio by portfolio segment and by class of financing receivable at December 31, 2022, prior to the adoption of ASU 2022-02 (in thousands): Total loans Allowance for Nonaccrual Loans 90 days past due and accruing TDRs Allowance Additional Personal Banking: Residential mortgage loans $ 3,498,599 19,261 7,574 — 6,279 1,069 — Home equity loans 1,297,674 5,902 4,145 — 1,470 546 — Vehicle loans 2,056,783 23,059 3,771 2 — — — Consumer loans 111,872 665 256 405 — — — Total Personal Banking 6,964,928 48,887 15,746 407 7,749 1,615 — Commercial Banking: Commercial real estate loans 2,448,028 44,506 62,239 — 31,980 638 400 Commercial real estate loans - owner occupied 375,527 4,004 624 — 94 31 — Commercial loans 1,131,969 20,639 2,627 337 858 116 4 Total Commercial Banking 3,955,524 69,149 65,490 337 32,932 785 404 Total $ 10,920,452 118,036 81,236 744 40,681 2,400 404 (1) Includes $29.2 million of nonaccrual TDRs.
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 nine-month period ended September 30, 2023 (in thousands): September 30, 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 9,760 — 9,760 — Home equity loans 4,145 3,262 169 3,431 133 Vehicle loans 3,771 2,838 979 3,817 57 Consumer loans 256 281 — 281 500 Total Personal Banking 15,746 16,141 1,148 17,289 690 Commercial Banking: Commercial real estate loans 62,239 21,838 32,271 54,109 — Commercial real estate loans - owner occupied 624 1,071 — 1,071 — Commercial loans 2,627 3,828 357 4,185 38 Total Commercial Banking 65,490 26,737 32,628 59,365 38 Total $ 81,236 42,878 33,776 76,654 728 The following table presents the amortized cost of our loans on nonaccrual status as of the year ended December 31, 2022 (in thousands): December 31, 2022 Nonaccrual loans at January 1, 2022 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 $ 10,402 7,574 — 7,574 — Home equity loans 5,758 3,887 258 4,145 — Vehicle loans 3,263 2,175 1,596 3,771 2 Consumer loans 675 256 — 256 405 Total Personal Banking 20,098 13,892 1,854 15,746 407 Commercial Banking: Commercial real estate loans 129,666 22,182 40,057 62,239 — Commercial real estate loans - owner occupied 1,233 624 — 624 — Commercial loans 7,474 2,024 603 2,627 337 Total Commercial Banking 138,373 24,830 40,660 65,490 337 Total $ 158,471 38,722 42,514 81,236 744 The following table presents the amortized cost basis of collateral-dependent loans by class of loans as of September 30, 2023 (in thousands): Real estate Total Commercial Banking: Commercial real estate loans $ 51,402 51,402 Commercial loans 160 160 Total Commercial Banking 51,562 51,562 Total $ 51,562 51,562 The following table presents the amortized cost basis of collateral-dependent loans by class of loans as of December 31, 2022 (in thousands): Real estate Equipment Total Personal Banking: Residential mortgage loans $ 569 — 569 Home equity loans 100 — 100 Total Personal Banking 669 — 669 Commercial Banking: Commercial real estate loans 57,056 — 57,056 Commercial loans 175 210 385 Total Commercial Banking 57,231 210 57,441 Total $ 57,900 210 58,110
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 as of September 30, 2023 that were both experiencing financial difficulty and modified during the periods indicated, 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, 2023 For the nine months ended September 30, 2023 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 $ 192 — 0.01 % 450 — 0.01 % Home equity loans 122 85 0.02 % 283 85 0.03 % Consumer loans — — — % — 3 0.00 % Total Personal Banking 314 85 0.01 % 733 88 0.01 % Commercial Banking: Commercial real estate loans — — — % 197 — 0.01 % Commercial loans 15 — 0.00 % 663 — 0.04 % Total Commercial Banking 15 — — % 860 — 0.02 % Total $ 329 85 0.00 % 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, 2023 For the nine months ended September 30, 2023 Weighted-average interest rate reduction Weighted-average term extension in months Weighted-average interest rate reduction Weighted-average term extension in months Personal Banking: Residential mortgage loans — % 169 — 149 Home equity loans 5 % 112 5 % 96 Consumer loans — % — 12 % 356 Total Personal Banking 5 % 140 17 % 126 Commercial Banking: Commercial real estate loans — % — — 25 Commercial loans — % 23 — 9 Total Commercial Banking — % 23 — 13 Total loans 5 % 135 17 % 68 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 real estate loans - owner occupied — — — — Commercial loans — 15 — 648 Total Commercial Banking 74 15 — 771 Total loans $ 895 15 — 771 The following tables provide a roll forward of troubled debt restructurings for the periods indicated, prior to the adoption of ASU 2022-02 (dollars in thousands): For the quarter ended September 30, 2022 For the nine months ended September 30, 2022 Number of Contracts Amount Number of Contracts Amount Beginning TDR balance: 128 $ 54,237 134 $ 30,288 New TDRs 6 221 8 25,626 Re-modified TDRs 4 977 10 1,178 Net paydowns — (810) — (1,609) Charge-offs: Residential mortgage loans — — 1 (3) Paid-off loans: Residential mortgage loans 1 (35) 2 (236) Home equity loans 1 (11) 3 (88) Commercial real estate loans 1 (3,349) 4 (3,718) Commercial real estate loans - owner occupied 1 (44) 1 (44) Commercial loans 3 (3,459) 4 (3,466) Ending TDR balance: 127 $ 46,750 127 $ 46,750 Accruing TDRs $ 16,344 $ 16,344 Nonaccrual TDRs 30,406 30,406 The following table provides information related to TDRs (including re-modified TDRs) by portfolio segment and by class of financing receivable during the periods indicated, prior to the adoption of ASU 2022-02 (dollars in thousands): For the quarter ended September 30, 2022 For the nine months ended September 30, 2022 Number of Recorded Current Current Number of Recorded Current Current Personal Banking: Residential mortgage loans 2 $ 147 144 15 2 $ 147 144 15 Home equity loans 5 160 154 23 5 160 154 23 Total Personal Banking 7 307 298 38 7 307 298 38 Commercial Banking: Commercial real estate loans 1 $ 610 609 89 5 $ 34,295 26,212 102 Commercial loans 2 332 291 20 6 3,856 294 20 Total Commercial Banking 3 942 900 109 11 38,151 26,506 122 Total 10 $ 1,249 1,198 147 18 $ 38,458 26,804 160
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 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, 2023 (in thousands): 30-59 days 60-89 days 90 days or Total Current Total loans 90 days or Personal Banking: Residential mortgage loans $ 573 5,395 7,695 13,663 3,459,100 3,472,763 — Home equity loans 4,707 1,341 2,206 8,254 1,250,511 1,258,765 133 Vehicle loans 9,122 2,412 2,274 13,808 2,025,891 2,039,699 57 Consumer loans 752 295 746 1,793 113,627 115,420 500 Total Personal Banking 15,154 9,443 12,921 37,518 6,849,129 6,886,647 690 Commercial Banking: Commercial real estate loans 3,411 1,328 8,042 12,781 2,540,863 2,553,644 — Commercial real estate loans - owner occupied — 260 374 634 368,739 369,373 — Commercial loans 2,847 981 2,472 6,300 1,494,309 1,500,609 38 Total Commercial Banking 6,258 2,569 10,888 19,715 4,403,911 4,423,626 38 Total loans $ 21,412 12,012 23,809 57,233 11,253,040 11,310,273 728 The following table provides information related to the amortized cost basis of loan payment delinquencies at December 31, 2022 (in thousands): 30-59 days 60-89 days 90 days or Total Current Total loans 90 days or Personal Banking: Residential mortgage loans $ 29,487 5,563 5,574 40,624 3,457,975 3,498,599 — Home equity loans 6,657 975 2,257 9,889 1,287,785 1,297,674 — Vehicle loans 8,677 2,770 2,471 13,918 2,042,865 2,056,783 2 Consumer loans 758 300 608 1,666 110,206 111,872 405 Total Personal Banking 45,579 9,608 10,910 66,097 6,898,831 6,964,928 407 Commercial Banking: Commercial real estate loans 3,947 2,377 7,589 13,913 2,434,115 2,448,028 — Commercial real estate loans - owner occupied 61 — 278 339 375,188 375,527 — Commercial loans 2,648 1,115 1,829 5,592 1,126,377 1,131,969 337 Total Commercial Banking 6,656 3,492 9,696 19,844 3,935,680 3,955,524 337 Total originated loans $ 52,235 13,100 20,606 85,941 10,834,511 10,920,452 744
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, 2023 (in thousands): YTD September 30, 2023 2022 2021 2020 2019 Prior Revolving loans Revolving loans converted to term loans Total loans Personal Banking: Residential mortgage loans Pass $ 159,472 673,235 803,613 516,270 249,797 1,056,864 — — 3,459,251 Substandard — 1,033 260 872 336 11,011 — — 13,512 Total residential mortgage loans 159,472 674,268 803,873 517,142 250,133 1,067,875 — — 3,472,763 Residential mortgage current period charge-offs — — (5) (130) — (788) — — (923) Home equity loans Pass 65,795 104,272 110,823 153,431 98,062 210,273 469,459 42,870 1,254,985 Substandard — — — — 149 1,783 1,050 798 3,780 Total home equity loans 65,795 104,272 110,823 153,431 98,211 212,056 470,509 43,668 1,258,765 Home equity current period charge-offs — (53) (46) — (48) (257) (142) (173) (719) Vehicle loans Pass 541,270 746,225 444,934 153,264 81,931 68,201 — — 2,035,825 Substandard 320 901 1,386 247 564 456 — — 3,874 Total vehicle loans 541,590 747,126 446,320 153,511 82,495 68,657 — — 2,039,699 Vehicle current period charge-offs (324) (1,385) (1,425) (416) (497) (684) — — (4,731) Consumer loans Pass 20,061 13,137 6,361 2,485 1,727 6,201 63,801 866 114,639 Substandard 45 57 31 8 14 1 506 119 781 Total consumer loans 20,106 13,194 6,392 2,493 1,741 6,202 64,307 985 115,420 Consumer loan current period charge-offs (2,055) (340) (271) (116) (150) (766) (149) (13) (3,860) Total Personal Banking 786,963 1,538,860 1,367,408 826,577 432,580 1,354,790 534,816 44,653 6,886,647 Business Banking: Commercial real estate loans Pass 127,229 437,503 356,152 330,522 225,478 776,377 23,845 25,345 2,302,451 Special mention — 7,451 26,749 21,732 5,615 34,909 350 — 96,806 Substandard — 174 1,056 8,108 48,592 95,825 514 118 154,387 Total commercial real estate loans 127,229 445,128 383,957 360,362 279,685 907,111 24,709 25,463 2,553,644 Commercial real estate current period charge-offs — — (492) — (51) (1,013) — — (1,556) Commercial real estate loans - owner occupied Pass 17,830 50,716 48,567 14,845 44,834 148,778 2,237 2,214 330,021 Special mention — 17,631 — 1,690 — 7,808 — — 27,129 Substandard — — 122 1,344 4,736 5,308 — 713 12,223 Total commercial real estate loans - owner occupied 17,830 68,347 48,689 17,879 49,570 161,894 2,237 2,927 369,373 Commercial real estate - owner occupied current period charge-offs — — — — — (68) — — (68) Commercial loans Pass 315,190 455,098 77,266 28,754 37,787 56,731 501,722 4,285 1,476,833 Special mention 542 315 58 369 316 68 2,022 — 3,690 Substandard — 2,496 577 495 2,503 1,025 11,730 1,260 20,086 Total commercial loans 315,732 457,909 77,901 29,618 40,606 57,824 515,474 5,545 1,500,609 Commercial loans current period charge-offs — (1,526) (517) (430) (110) (715) (60) (2) (3,360) Total Business Banking 460,791 971,384 510,547 407,859 369,861 1,126,829 542,420 33,935 4,423,626 Total loans $ 1,247,754 2,510,244 1,877,955 1,234,436 802,441 2,481,619 1,077,236 78,588 11,310,273 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, 2022 (in thousands): 2022 2021 2020 2019 2018 Prior Revolving loans Revolving loans converted to term loans Total loans Personal Banking: Residential mortgage loans Pass $ 659,930 837,823 546,604 265,520 131,599 1,043,394 — — 3,484,870 Substandard 422 187 474 796 531 11,319 — — 13,729 Total residential mortgage loans 660,352 838,010 547,078 266,316 132,130 1,054,713 — — 3,498,599 Home equity loans Pass 114,598 126,608 173,044 110,495 50,314 198,971 475,229 42,887 1,292,146 Substandard — 46 — 127 324 3,066 683 1,282 5,528 Total home equity loans 114,598 126,654 173,044 110,622 50,638 202,037 475,912 44,169 1,297,674 Vehicle loans Pass 966,432 611,310 227,897 135,134 70,071 42,166 — — 2,053,010 Substandard 292 1,096 667 689 657 372 — — 3,773 Total vehicle loans 966,724 612,406 228,564 135,823 70,728 42,538 — — 2,056,783 Consumer loans Pass 19,302 9,874 4,327 3,557 2,409 5,094 65,610 1,037 111,210 Substandard 24 9 37 9 3 48 432 100 662 Total consumer loans 19,326 9,883 4,364 3,566 2,412 5,142 66,042 1,137 111,872 Total Personal Banking 1,761,000 1,586,953 953,050 516,327 255,908 1,304,430 541,954 45,306 6,964,928 Business Banking: Commercial real estate loans Pass 322,050 346,355 369,868 244,188 209,500 696,628 24,954 13,314 2,226,857 Special mention — 17,216 16,782 87 1,000 15,887 157 15 51,144 Substandard — 4,561 3,617 48,879 41,521 70,384 459 606 170,027 Total commercial real estate loans 322,050 368,132 390,267 293,154 252,021 782,899 25,570 13,935 2,448,028 Commercial real estate - owner occupied Pass 62,905 51,673 17,989 49,600 43,570 123,278 2,477 1,460 352,952 Special mention 126 — 18 — 2,297 1,106 385 — 3,932 Substandard — — — 5,085 2,440 9,250 — 1,868 18,643 Total commercial real estate - owner occupied loans 63,031 51,673 18,007 54,685 48,307 133,634 2,862 3,328 375,527 Commercial loans Pass 481,797 90,320 52,833 46,966 17,250 53,107 354,402 4,032 1,100,707 Special mention 628 2,190 506 1,704 227 — 2,129 — 7,384 Substandard 1,833 603 908 2,097 1,605 735 12,941 3,156 23,878 Total commercial loans 484,258 93,113 54,247 50,767 19,082 53,842 369,472 7,188 1,131,969 Total Business Banking 869,339 512,918 462,521 398,606 319,410 970,375 397,904 24,451 3,955,524 Total loans $ 2,630,339 2,099,871 1,415,571 914,933 575,318 2,274,805 939,858 69,757 10,920,452

Goodwill and Other Intangible_2

Goodwill and Other Intangible Assets (Tables)	9 Months Ended
	Sep. 30, 2023
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, 2023 December 31, 2022 Amortizable intangible assets: Core deposit intangibles - gross $ 74,899 74,899 Less: accumulated amortization (68,886) (66,367) Core deposit intangibles - net $ 6,013 8,532 Customer and Contract intangible assets - gross $ 12,775 12,775 Less: accumulated amortization (12,775) (12,747) Customer and Contract intangible assets - net — 28 Total intangible assets - net $ 6,013 8,560
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, 2023 and 2022, as well as the estimated aggregate amortization expense, based upon current levels of intangible assets, for the current fiscal year and each of the five succeeding fiscal years (in thousands): For the quarter ended September 30, 2023 $ 795 For the quarter ended September 30, 2022 1,047 For the nine months ended September 30, 2023 2,546 For the nine months ended September 30, 2022 3,345 For the year ending December 31, 2023 3,270 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 305
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, 2022 $ 380,997 Balance at September 30, 2023 $ 380,997

Borrowed Funds (Tables)

Borrowed Funds (Tables)	9 Months Ended
	Sep. 30, 2023
Debt Disclosure [Abstract]
Schedule of borrowed funds	Borrowed funds at September 30, 2023 and December 31, 2022 are presented in the following table: September 30, 2023 December 31, 2022 Amount Average rate Amount Average rate Term notes payable to the FHLB of Pittsburgh, due within one year $ 375,400 5.65 % $ 500,000 4.55 % Notes payable to the FHLB of Pittsburgh, due within one year 119,000 5.68 % 51,300 4.45 % Collateralized borrowings, due within one year 48,587 1.52 % 105,766 0.27 % Collateral received, due within one year 61,600 5.16 % 24,100 4.17 % Total borrowed funds $ 604,587 $ 681,166
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, 2023 December 31, 2022 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 7,993 7,975 Union National Capital Trust II (1) November 23, 2034 3-month SOFR plus 2.00% 3,000 2,789 2,768 MFBC Statutory Trust I (1) September 15, 2035 3-month SOFR plus 1.70% 5,000 3,762 3,684 Universal Preferred Trust (1) October 7, 2035 3-month SOFR plus 1.69% 5,000 3,752 3,674 $ 129,509 129,314 (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, 2023
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, 2023 2022 2023 2022 Net income $ 39,220 37,304 105,943 99,017 Less: Dividends and undistributed earnings allocated to participating securities 99 166 267 441 Net income available to common shareholders $ 39,121 37,138 105,676 98,576 Weighted average common shares outstanding 126,767,507 126,320,706 126,629,786 126,082,217 Add: Participating shares outstanding 320,177 565,729 320,177 565,729 Total weighted average common shares and dilutive potential shares 127,087,684 126,886,435 126,949,963 126,647,946 Basic earnings per share $ 0.31 0.29 0.83 0.78 Diluted earnings per share $ 0.31 0.29 0.83 0.78

Pension and Other Post-Retire_2

Pension and Other Post-Retirement Benefits (Tables)	9 Months Ended
	Sep. 30, 2023
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 2023 2022 2023 2022 Service cost $ 1,560 2,599 — — Interest cost 2,245 1,671 7 10 Expected return on plan assets (3,479) (3,864) — — Amortization of prior service cost (564) (564) — — Amortization of the net loss 20 381 10 2 Net periodic cost $ (218) 223 17 12 Nine months ended September 30, Pension benefits Other post-retirement benefits 2023 2022 2023 2022 Service cost $ 4,680 7,797 — — Interest cost 6,735 5,013 21 30 Expected return on plan assets (10,437) (11,592) — — Amortization of prior service cost (1,692) (1,692) — — Amortization of the net loss 60 1,143 30 6 Net periodic cost $ (654) 669 51 36

Disclosures About Fair Value _2

Disclosures About Fair Value of Financial Instruments (Tables)	9 Months Ended
	Sep. 30, 2023
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, 2023 (in thousands): Carrying Estimated Level 1 Level 2 Level 3 Financial assets: Cash and cash equivalents $ 161,995 161,995 161,995 — — Securities available-for-sale 1,010,076 1,010,076 — 1,010,076 — Securities held-to-maturity 830,106 682,681 — 682,681 — Loans receivable, net 11,174,840 10,031,968 — — 10,031,968 Loans held-for-sale 10,592 10,592 — — 10,592 Accrued interest receivable 42,624 42,624 42,624 — — Interest rate lock commitments 664 664 — — 664 Foreign exchange swaps 203 203 — 203 — Interest rate swaps designated as hedging instruments 4,603 4,603 — 4,603 — Interest rate swaps not designated as hedging instruments 57,249 57,249 — 57,249 — FHLB stock 40,404 40,404 — — — Total financial assets $ 13,333,356 12,043,059 204,619 1,754,812 10,043,224 Financial liabilities: Savings and checking deposits $ 9,531,544 9,531,544 9,531,544 — — Time deposits 2,258,338 2,250,768 — — 2,250,768 Borrowed funds 604,587 617,832 617,832 — — Subordinated debt 114,102 102,456 — 102,456 — Junior subordinated debentures 129,509 136,461 — — 136,461 Forward commitments 23 23 — 23 — Foreign exchange swaps 10 10 — 10 — Interest rate swaps not designated as hedging instruments 57,275 57,275 — 57,275 — Risk participation agreements 17 17 — 17 — Accrued interest payable 7,915 7,915 7,915 — — Total financial liabilities $ 12,703,320 12,704,301 10,157,291 159,781 2,387,229 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, 2022 (in thousands): Carrying Estimated Level 1 Level 2 Level 3 Financial assets: Cash and cash equivalents $ 139,365 139,365 139,365 — — Securities available-for-sale 1,218,108 1,218,108 — 1,218,108 — Securities held-to-maturity 881,249 751,384 — 751,384 — Loans receivable, net 10,792,503 9,910,852 — — 9,910,852 Residential mortgage loans held-for-sale 9,913 9,913 — — 9,913 Accrued interest receivable 35,528 35,528 35,528 — — Interest rate lock commitments 559 559 — — 559 Forward commitments 128 128 — 128 — Interest rate swaps not designated as hedging instruments 26,642 26,642 — 26,642 — FHLB stock 40,143 40,143 — — — Total financial assets $ 13,144,138 12,132,622 174,893 1,996,262 9,921,324 Financial liabilities: Savings and checking accounts $ 10,412,263 10,412,263 10,412,263 — — Time deposits 1,052,285 1,059,790 — — 1,059,790 Borrowed funds 681,166 680,996 680,996 — — Subordinated debt 113,840 102,554 — 102,554 — Junior subordinated debentures 129,314 133,546 — — 133,546 Foreign exchange swaps 23 23 — 23 — Interest rate swaps not designated as hedging instruments 45,464 45,464 — 45,464 — Risk participation agreements 18 18 — 18 — Accrued interest payable 3,231 3,231 3,231 — — Total financial liabilities $ 12,437,604 12,437,885 11,096,490 148,059 1,193,336
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, 2023 (in thousands): Level 1 Level 2 Level 3 Total assets Debt securities: U.S. government and agencies $ — 56,526 — 56,526 Government-sponsored enterprises — 38,906 — 38,906 States and political subdivisions — 68,071 — 68,071 Corporate — 7,464 — 7,464 Total debt securities — 170,967 — 170,967 Residential mortgage-backed securities: GNMA — 17,073 — 17,073 FNMA — 99,874 — 99,874 FHLMC — 68,926 — 68,926 Non-agency — 5 — 5 Collateralized mortgage obligations: GNMA — 318,652 — 318,652 FNMA — 148,389 — 148,389 FHLMC — 186,190 — 186,190 Total mortgage-backed securities — 839,109 — 839,109 Interest rate lock commitments — — 664 664 Foreign exchange swaps — 203 — 203 Interest rate swaps designated as hedging instruments — 4,603 — 4,603 Interest rate swaps not designated as hedging instruments — 57,249 — 57,249 Total assets $ — 1,072,131 664 1,072,795 Forward commitments $ — 23 — 23 Foreign exchange swaps — 10 — 10 Interest rate swaps not designated as hedging instruments — 57,275 — 57,275 Risk participation agreements — 17 — 17 Total liabilities $ — 57,325 — 57,325 The following table represents assets and liabilities measured at fair value on a recurring basis at December 31, 2022 (in thousands): Level 1 Level 2 Level 3 Total assets Debt securities: U.S. government and agencies $ — 60,592 — 60,592 Government-sponsored enterprises — 39,201 — 39,201 States and political subdivisions — 111,766 — 111,766 Corporate — 12,978 — 12,978 Total debt securities — 224,537 — 224,537 Residential mortgage-backed securities: GNMA — 12,434 — 12,434 FNMA — 117,218 — 117,218 FHLMC — 74,991 — 74,991 Non-agency — 6 — 6 Collateralized mortgage obligations: GNMA — 364,553 — 364,553 FNMA — 185,588 — 185,588 FHLMC — 238,781 — 238,781 Total mortgage-backed securities — 993,571 — 993,571 Interest rate lock commitments — — 559 559 Forward commitments — 128 — 128 Interest rate swaps not designated as hedging instruments — 26,642 — 26,642 Total assets $ — 1,244,878 559 1,245,437 Foreign exchange swaps $ — 23 — 23 Interest rate swaps not designated as hedging instruments — 45,464 — 45,464 Risk participation agreements — 18 — 18 Total liabilities $ — 45,505 — 45,505
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, 2023 2022 2023 2022 Beginning balance, $ 761 1,520 559 1,684 Interest rate lock commitments: Net activity (97) (457) 105 (621) Ending balance $ 664 1,063 664 1,063
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, 2023 (in thousands): Level 1 Level 2 Level 3 Total assets Loans individually assessed $ — — 13,467 13,467 Mortgage servicing rights — — 198 198 Real estate owned, net — — 363 363 Total assets $ — — 14,028 14,028 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, 2022 (in thousands): Level 1 Level 2 Level 3 Total assets Loans individually assessed $ — — 15,416 15,416 Mortgage servicing rights — — 95 95 Real estate owned, net — — 413 413 Total assets $ — — 15,924 15,924
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, 2023 (in thousands): Fair value Valuation techniques Significant Range (weighted average) Loans individually assessed $ 13,467 Appraisal value (1) Estimated cost to sell 10.0% Mortgage servicing rights 198 Discounted cash flow Annual service cost $90 Prepayment rate 6.6% to 15.0% (9.9%) Expected life (months) 53.1 to 103.5 (75.8) Option adjusted spread 720 basis points Forward yield curve 5.44% to 5.60% Real estate owned, net 363 Appraisal value (1) Estimated cost to sell 15.0% Loans held for sale 10,592 Quoted prices for similar loans in active markets adjusted by an expected pull-through rate Estimated pull-through rate 100.0% (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, 2023
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule of derivative instruments	The following table presents information regarding our derivative financial instruments for the periods indicated (in thousands): Asset derivatives Liability derivatives Notional amount Fair value Notional amount Fair value At September 30, 2023 Derivatives designated as hedging instruments: Interest rate swap agreements $ 175,000 4,603 — — Derivatives not designated as hedging instruments: Interest rate swap agreements 673,255 57,249 673,255 57,275 Foreign exchange swap agreements 7,393 203 760 10 Interest rate lock commitments 35,272 664 — — Forward commitments — — 6,772 23 Risk participation agreements — — 102,385 17 Total Derivatives $ 890,920 62,719 783,172 57,325 At December 31, 2022 Derivatives not designated as hedging instruments: Interest rate swap agreements $ 651,114 26,642 651,114 45,464 Foreign exchange swap agreements — — 2,328 23 Interest rate lock commitments 19,727 559 — — Forward commitments 4,909 128 — — Risk participation agreements — — 114,159 18 Total derivatives $ 675,750 27,329 767,601 45,505
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, 2023 2022 2023 2022 Hedging derivatives: Decrease in interest expense $ 627 — 831 — Non-hedging swap derivatives: Increase/(decrease) in other income $ 203 93 (127) 207 (Decrease)/increase in mortgage banking income $ (221) 809 (46) 1,131
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, 2023 (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 3.52 % $ (540) 5/11/2027 43 Issued May 12, 2023 25,000 3.54 % (528) 5/12/2028 55 Issued May 19, 2023 25,000 3.84 % (454) 11/19/2027 50 Issued May 31, 2023 25,000 4.08 % (400) 11/30/2026 38 Issued July 26, 2023 25,000 4.24 % (348) 7/26/2028 58 Issued July 31, 2023 25,000 4.36 % (330) 1/31/2028 52 Issued August 9, 2023 25,000 4.32 % (333) 8/9/2027 46 Total $ 175,000 $ (2,933)

Changes in Accumulated Other _2

Changes in Accumulated Other Comprehensive Income (Tables)	9 Months Ended
	Sep. 30, 2023
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, 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 (1) (2) (29,715) 1,825 — (27,890) Amounts reclassified from accumulated other comprehensive income (3) — — (382) (382) Net other comprehensive (loss)/income (29,715) 1,825 (382) (28,272) Balance as of September 30, 2023 $ (192,987) 3,562 (8,098) (197,523) For the quarter ended September 30, 2022 Unrealized Change in Total Balance as of June 30, 2022 $ (117,056) (25,574) (142,630) Other comprehensive loss before reclassification adjustments (4) (48,387) — (48,387) Amounts reclassified from accumulated other comprehensive income (5) — (131) (131) Net other comprehensive loss (48,387) (131) (48,518) Balance as of September 30, 2022 $ (165,443) (25,705) (191,148) (1) Consists of unrealized holding losses, net of tax of $9,140. (2) Change in fair value of interest rate swaps, net of tax ($533). (3) Consists of realized gains, net of tax of $152. (4) Consists of unrealized holding losses, net of tax $14,705. (5) Consists of realized gains, net of tax of $50. 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)/income before reclassification adjustments (1) (3) (34,417) 3,562 — (30,855) Amounts reclassified from accumulated other comprehensive income (2) (4) 5,636 — (1,146) 4,490 Net other comprehensive income/(loss) (28,781) 3,562 (1,146) (26,365) Balance as of September 30, 2023 $ (192,987) 3,562 (8,098) (197,523) For the nine months ended September 30, 2022 Unrealized Change in Total Balance as of December 31, 2021 $ (12,317) (25,312) (37,629) Other comprehensive loss before reclassification adjustments (5) (153,124) — (153,124) Amounts reclassified from accumulated other comprehensive income (6) (7) (2) (393) (395) Net other comprehensive loss (153,126) (393) (153,519) Balance as of September 30, 2022 $ (165,443) (25,705) (191,148) (1) Consists of unrealized holding losses, net of tax of $9,603. (2) Consists of realized losses, net of tax of ($1,731). (3) Change in fair value of interest rate swaps, net of tax ($1,041). (4) Consists of realized gains, net of tax of $456. (5) Consists of unrealized holding losses, net of tax $45,555. (6) Consists of realized losses, net of tax $0. (7) Consists of realized gains, net of tax of $151.

Basis of Presentation and Inf_3

Basis of Presentation and Informational Disclosures (Details) $ / shares in Units, $ in Thousands		3 Months Ended		9 Months Ended
	Mar. 15, 2023 $ / shares shares	Sep. 30, 2023 USD ($) bank_location	Sep. 30, 2022 USD ($)	Sep. 30, 2023 USD ($) bank_location $ / shares shares	Dec. 31, 2022 USD ($)
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Number of banking locations | bank_location		142		142
Unrecognized tax benefits liability		$ 702		$ 702	$ 473
Stock Related Compensation
Stock-based compensation expense		1,300	$ 944,000
RSUs
Stock Related Compensation
Award granted (in shares) | shares				178,483
Award weighted average grant date fair value (in dollars per share) | $ / shares				$ 10.87
Award vesting period (in years)	3 years
Compensation expense yet to be recognized		3,700		$ 3,700
RSUs | Minimum
Stock Related Compensation
Award vesting period (in years)				2 years
RSUs | Maximum
Stock Related Compensation
Award vesting period (in years)				3 years
RSUs | First vesting
Stock Related Compensation
Award vesting period (in years)	1 year			1 year
RSAs
Stock Related Compensation
Compensation expense yet to be recognized		193		$ 193
RSAs | Common stock
Stock Related Compensation
Compensation expense yet to be recognized		2,500		2,500
PSUs
Stock Related Compensation
Compensation expense yet to be recognized		2,100		2,100
Stock Options
Stock Related Compensation
Compensation expense yet to be recognized		$ 401		$ 401
Employees | RSUs
Stock Related Compensation
Award granted (in shares) | shares	176,623
Award weighted average grant date fair value (in dollars per share) | $ / shares	$ 11.28
Employees | PSUs
Stock Related Compensation
Award granted (in shares) | shares	176,623
Award weighted average grant date fair value (in dollars per share) | $ / shares	$ 10.54
Award vesting period (in years)	3 years
Employees | PSUs | Minimum
Stock Related Compensation
Award vesting (as a percent)	0%
Employees | PSUs | Maximum
Stock Related Compensation
Award vesting (as a percent)	15,000%
Director | RSAs
Stock Related Compensation
Award granted (in shares) | shares	33,048
Award weighted average grant date fair value (in dollars per share) | $ / shares	$ 12.80
Award vesting period (in years)	1 year

Marketable Securities - Availab

Marketable Securities - Available For Sale (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Amortized cost
Residential mortgage-backed securities	$ 1,262,080	$ 1,431,728
Gross unrealized holding gains
Residential mortgage-backed securities, gross unrealized holding gains	33	105
Gross unrealized holding losses
Residential mortgage-backed securities, gross unrealized holding losses	(252,037)	(213,725)
Fair value
Securities available-for-sale	1,010,076	1,218,108
U.S. government and agencies
Amortized cost
Due after one year through five years	20,000	20,000
Due after ten years	50,166	53,152
Gross unrealized holding gains
Due after one year through five years	0	0
Due after ten years	0	0
Gross unrealized holding losses
Due after one year through five years	(1,750)	(1,799)
Due after ten years	(11,890)	(10,761)
Fair value
Due after one year through five years	18,250	18,201
Due after ten years	38,276	42,391
Government-sponsored enterprises
Amortized cost
Due after one year through five years	45,985	993
Due after five years through ten years	434	45,814
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	(7,502)	(49)
Due after five years through ten years	(11)	(7,557)
Fair value
Due after one year through five years	38,483	944
Due after five years through ten years	423	38,257
Municipal securities
Amortized cost
Due within one year		506
Due after one year through five years	954	986
Due after five years through ten years	21,976	36,332
Due after ten years	62,990	89,631
Gross unrealized holding gains
Due within one year		0
Due after one year through five years	3	21
Due after five years through ten years	0	0
Due after ten years	0	8
Gross unrealized holding losses
Due within one year		(1)
Due after one year through five years	(9)	(13)
Due after five years through ten years	(3,055)	(2,290)
Due after ten years	(14,788)	(13,414)
Fair value
Due within one year		505
Due after one year through five years	948	994
Due after five years through ten years	18,921	34,042
Due after ten years	48,202	76,225
Corporate debt issues
Amortized cost
Due after five years through ten years	8,464	13,540
Gross unrealized holding gains
Due after five years through ten years	0	0
Gross unrealized holding losses
Due after five years through ten years	(1,000)	(562)
Fair value
Due after five years through ten years	7,464	12,978
Residential mortgage-backed securities - agency
Amortized cost
Due within one year	60
Due after one year through five years	25,302
Due after five years through ten years	27,837
Due after ten years	997,912
Residential mortgage-backed securities	1,051,111	1,170,774
Gross unrealized holding gains
Residential mortgage-backed securities, gross unrealized holding gains	30	76
Gross unrealized holding losses
Residential mortgage-backed securities, gross unrealized holding losses	(212,032)	(177,279)
Fair value
Due within one year	59
Due after one year through five years	23,185
Due after five years through ten years	25,424
Due after ten years	790,441
Securities available-for-sale	839,109	993,571
Fixed rate pass-through
Amortized cost
Residential mortgage-backed securities	213,849	227,122
Gross unrealized holding gains
Residential mortgage-backed securities, gross unrealized holding gains	0	35
Gross unrealized holding losses
Residential mortgage-backed securities, gross unrealized holding losses	(35,305)	(31,171)
Fair value
Securities available-for-sale	178,544	195,986
Variable rate pass-through
Amortized cost
Residential mortgage-backed securities	7,501	8,837
Gross unrealized holding gains
Residential mortgage-backed securities, gross unrealized holding gains	2	10
Gross unrealized holding losses
Residential mortgage-backed securities, gross unrealized holding losses	(169)	(184)
Fair value
Securities available-for-sale	7,334	8,663
Fixed rate agency CMOs
Amortized cost
Residential mortgage-backed securities	805,086	906,962
Gross unrealized holding gains
Residential mortgage-backed securities, gross unrealized holding gains	0	0
Gross unrealized holding losses
Residential mortgage-backed securities, gross unrealized holding losses	(175,985)	(145,284)
Fair value
Securities available-for-sale	629,101	761,678
Variable rate agency CMOs
Amortized cost
Residential mortgage-backed securities	24,675	27,853
Gross unrealized holding gains
Residential mortgage-backed securities, gross unrealized holding gains	28	31
Gross unrealized holding losses
Residential mortgage-backed securities, gross unrealized holding losses	(573)	(640)
Fair value
Securities available-for-sale	$ 24,130	$ 27,244

Marketable Securities - Held To

Marketable Securities - Held To Maturity (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Amortized cost
Amortized cost	$ 830,106	$ 881,249
Gross unrealized holding gains
Gross unrealized holding gains	0	0
Gross unrealized holding losses
Gross unrealized holding losses	(147,425)	(129,865)
Fair value
Fair value	682,681	751,384
Debt issued by government-sponsored enterprises
Amortized cost
Due after one year through five years	49,471	29,478
Due after five years through ten years	74,986	94,977
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	(6,830)	(3,676)
Due after five years through ten years	(14,901)	(18,157)
Fair value
Due after one year through five years	42,641	25,802
Due after five years through ten years	60,085	76,820
Residential mortgage-backed securities - agency
Amortized cost
Due after one year through five years	20,343
Due after five years through ten years	20,225
Amortized cost	705,649	756,794
Gross unrealized holding gains
Gross unrealized holding gains	0	0
Gross unrealized holding losses
Gross unrealized holding losses	(125,694)	(108,032)
Fair value
Due after one year through five years	17,291
Due after five years through ten years	15,484
Fair value	579,955	648,762
Fixed rate pass-through
Amortized cost
Amortized cost	151,411	163,196
Gross unrealized holding gains
Gross unrealized holding gains	0	0
Gross unrealized holding losses
Gross unrealized holding losses	(27,070)	(24,684)
Fair value
Fair value	124,341	138,512
Variable rate pass-through
Amortized cost
Amortized cost	468	542
Gross unrealized holding gains
Gross unrealized holding gains	0	0
Gross unrealized holding losses
Gross unrealized holding losses	(8)	(12)
Fair value
Fair value	460	530
Fixed rate agency CMOs
Amortized cost
Amortized cost	553,241	592,527
Gross unrealized holding gains
Gross unrealized holding gains	0	0
Gross unrealized holding losses
Gross unrealized holding losses	(98,606)	(83,325)
Fair value
Fair value	454,635	509,202
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	(10)	(11)
Fair value
Fair value	$ 519	$ 518

Marketable Securities - Avail_2

Marketable Securities - Available-for-sale, by Contractual Maturity (Details) - Residential mortgage-backed securities - agency $ in Thousands	Sep. 30, 2023 USD ($)
Amortized cost
Due within one year	$ 60
Due after one year through five years	25,302
Due after five years through ten years	27,837
Due after ten years	997,912
Total marketable securities available-for-sale	1,051,111
Fair value
Due within one year	59
Due after one year through five years	23,185
Due after five years through ten years	25,424
Due after ten years	790,441
Total marketable securities available-for-sale	$ 839,109

Marketable Securities - Held _2

Marketable Securities - Held To Maturity, by Contractual Maturity (Details) - Residential mortgage-backed securities - agency $ in Thousands	Sep. 30, 2023 USD ($)
Amortized cost
Due after one year through five years	$ 20,343
Due after five years through ten years	20,225
Due after ten years	665,081
Total marketable securities held-to-maturity	705,649
Fair value
Due after one year through five years	17,291
Due after five years through ten years	15,484
Due after ten years	547,180
Total marketable securities held-to-maturity	$ 579,955

Marketable Securities - Fair Va

Marketable Securities - Fair Value of and Gross Unrealized Losses on Investment Securities (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2023 USD ($) position	Dec. 31, 2022 USD ($)
Marketable securities available-for-sale
Less than 12 months - Fair value	$ 34,484	$ 448,576
Less than 12 months - Unrealized loss	(1,808)	(27,487)
12 months or more - Fair value	1,655,118	1,509,214
12 months or more - Unrealized loss	(397,654)	(316,103)
Total - Fair value	1,689,602	1,957,790
Total - Unrealized loss	$ (399,462)	(343,590)
Number of investment positions with unrealized losses | position	548
U.S. government and agencies
Marketable securities available-for-sale
Less than 12 months - Fair value	$ 423	1,735
Less than 12 months - Unrealized loss	(11)	(82)
12 months or more - Fair value	197,736	200,679
12 months or more - Unrealized loss	(42,873)	(41,917)
Total - Fair value	198,159	202,414
Total - Unrealized loss	(42,884)	(41,999)
Municipal securities
Marketable securities available-for-sale
Less than 12 months - Fair value	8,412	60,676
Less than 12 months - Unrealized loss	(526)	(4,047)
12 months or more - Fair value	59,233	44,493
12 months or more - Unrealized loss	(17,326)	(11,671)
Total - Fair value	67,645	105,169
Total - Unrealized loss	(17,852)	(15,718)
Corporate debt issues
Marketable securities available-for-sale
Less than 12 months - Fair value	0	12,979
Less than 12 months - Unrealized loss	0	(562)
12 months or more - Fair value	7,464	0
12 months or more - Unrealized loss	(1,000)	0
Total - Fair value	7,464	12,979
Total - Unrealized loss	(1,000)	(562)
Residential mortgage-backed securities - agency | Agency CMOs
Marketable securities available-for-sale
Less than 12 months - Fair value	25,649	373,186
Less than 12 months - Unrealized loss	(1,271)	(22,796)
12 months or more - Fair value	1,390,685	1,264,042
12 months or more - Unrealized loss	(336,455)	(262,515)
Total - Fair value	1,416,334	1,637,228
Total - Unrealized loss	$ (337,726)	$ (285,311)

Marketable Securities - Credit

Marketable Securities - Credit Quality of Held To Maturity Securities (Details) $ in Thousands	Sep. 30, 2023 USD ($)
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Held-to-maturity securities	$ 830,106
Residential mortgage-backed securities
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Held-to-maturity securities	705,649
U.S. government and agencies
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Held-to-maturity securities	124,457
AA+
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Held-to-maturity securities	830,106
AA+ | Residential mortgage-backed securities
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Held-to-maturity securities	705,649
AA+ | U.S. government and agencies
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Held-to-maturity securities	$ 124,457

Loans Receivable - Summary of O

Loans Receivable - Summary of Originated and Acquired Loans (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Jun. 30, 2023	Dec. 31, 2022	Sep. 30, 2022	Jun. 30, 2022	Dec. 31, 2021
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable, gross	$ 11,310,273		$ 10,920,452
Allowance for credit losses	(124,841)	$ (124,423)	(118,036)	$ (109,819)	$ (98,355)	$ (102,241)
Total loans receivable, net	11,185,432		10,802,416
Loans held-for-sale	10,592		9,913
Unearned income, unamortized premiums and discounts and deferred fees and costs	71,500		76,100
Personal Banking
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable, gross	6,886,647		6,964,928
Allowance for credit losses	(50,562)	(50,851)	(48,887)	(41,244)	(37,907)	(31,040)
Personal Banking | Residential mortgage loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable, gross	3,472,763		3,498,599
Allowance for credit losses	(17,090)	(17,556)	(19,261)	(17,967)	(16,158)	(7,373)
Loans held-for-sale	10,200		9,900
Personal Banking | Home equity loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable, gross	1,258,765		1,297,674
Allowance for credit losses	(5,044)	(5,002)	(5,902)	(5,448)	(5,232)	(5,300)
Personal Banking | Vehicle loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable, gross	2,039,699		2,056,783
Allowance for credit losses	(27,226)	(27,283)	(23,059)	(17,004)	(15,738)	(15,483)
Personal Banking | Consumer loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable, gross	115,420		111,872
Allowance for credit losses	(1,202)	(1,010)	(665)	(825)	(779)	(2,884)
Commercial Banking
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable, gross	4,423,626		3,955,524
Allowance for credit losses	(74,279)	(73,572)	(69,149)	(68,575)	(60,448)	(71,201)
Commercial Banking | Commercial real estate loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable, gross	2,553,644		2,448,028
Allowance for credit losses	(48,582)	(50,056)	(44,506)	(49,649)	(39,641)	(54,141)
Loans held-for-sale	435		0
Commercial Banking | Commercial real estate loans - owner occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable, gross	369,373		375,527
Allowance for credit losses	(3,479)	(3,498)	(4,004)	(4,087)	(4,095)	(3,883)
Commercial Banking | Commercial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable, gross	1,500,609		1,131,969
Allowance for credit losses	(22,218)	$ (20,018)	(20,639)	$ (14,839)	$ (16,712)	$ (13,177)
Originated
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable, gross	10,620,595		10,089,414
Allowance for credit losses	(116,596)		(107,379)
Total loans receivable, net	10,503,999		9,982,035
Originated | Personal Banking
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable, gross	6,527,159		6,529,189
Originated | Personal Banking | Residential mortgage loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable, gross	3,322,136		3,327,879
Originated | Personal Banking | Home equity loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable, gross	1,126,675		1,131,641
Originated | Personal Banking | Vehicle loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable, gross	1,969,029		1,965,385
Originated | Personal Banking | Consumer loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable, gross	109,319		104,284
Originated | Commercial Banking
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable, gross	4,093,436		3,560,225
Originated | Commercial Banking | Commercial real estate loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable, gross	2,286,563		2,135,607
Originated | Commercial Banking | Commercial real estate loans - owner occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable, gross	343,714		341,704
Originated | Commercial Banking | Commercial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable, gross	1,463,159		1,082,914
Acquired
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable, gross	689,678		831,038
Allowance for credit losses	(8,245)		(10,657)
Total loans receivable, net	681,433		820,381
Acquired | Personal Banking
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable, gross	359,488		435,739
Acquired | Personal Banking | Residential mortgage loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable, gross	150,627		170,720
Acquired | Personal Banking | Home equity loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable, gross	132,090		166,033
Acquired | Personal Banking | Vehicle loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable, gross	70,670		91,398
Acquired | Personal Banking | Consumer loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable, gross	6,101		7,588
Acquired | Commercial Banking
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable, gross	330,190		395,299
Acquired | Commercial Banking | Commercial real estate loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable, gross	267,081		312,421
Acquired | Commercial Banking | Commercial real estate loans - owner occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable, gross	25,659		33,823
Acquired | Commercial Banking | Commercial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable, gross	$ 37,450		$ 49,055

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
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Changes in allowance for losses on allocated loans receivable
Beginning balance	$ 124,423	$ 98,355	$ 118,036	$ 102,241
Current period provision	3,983	7,689	14,863	8,837
Charge-offs	(5,346)	(4,614)	(15,217)	(16,698)
Recoveries	1,781	8,389	6,733	15,439
Ending balance	124,841	109,819	124,841	109,819
Cumulative Effect, Period of Adoption, Adjustment
Changes in allowance for losses on allocated loans receivable
Beginning balance			426
Off-Balance sheet exposure
Changes in allowance for losses on allocated loans receivable
Beginning balance	15,959	7,450	12,913	2,458
Current period provision	(2,981)	3,585	65	8,577
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Ending balance	12,978	11,035	12,978	11,035
Off-Balance sheet exposure | Cumulative Effect, Period of Adoption, Adjustment
Changes in allowance for losses on allocated loans receivable
Beginning balance			0
Small business equipment finance loan pool
Changes in allowance for losses on allocated loans receivable
Loans purchased				182,800
One-to-four family jumbo mortgage loan pool
Changes in allowance for losses on allocated loans receivable
Loans purchased				188,300
Personal Banking
Changes in allowance for losses on allocated loans receivable
Beginning balance	50,851	37,907	48,887	31,040
Current period provision	2,251	4,733	7,978	14,096
Charge-offs	(3,576)	(3,042)	(10,233)	(8,700)
Recoveries	1,036	1,646	3,930	4,808
Ending balance	50,562	41,244	50,562	41,244
Personal Banking | Cumulative Effect, Period of Adoption, Adjustment
Changes in allowance for losses on allocated loans receivable
Beginning balance			0
Personal Banking | Off-Balance sheet exposure
Changes in allowance for losses on allocated loans receivable
Beginning balance	68	70	78	41
Current period provision	2	8	(8)	37
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Ending balance	70	78	70	78
Personal Banking | Off-Balance sheet exposure | Cumulative Effect, Period of Adoption, Adjustment
Changes in allowance for losses on allocated loans receivable
Beginning balance			0
Personal Banking | Residential mortgage loans
Changes in allowance for losses on allocated loans receivable
Beginning balance	17,556	16,158	19,261	7,373
Current period provision	(370)	1,646	(2,047)	11,331
Charge-offs	(171)	(166)	(923)	(1,487)
Recoveries	75	329	799	750
Ending balance	17,090	17,967	17,090	17,967
Personal Banking | Residential mortgage loans | Cumulative Effect, Period of Adoption, Adjustment
Changes in allowance for losses on allocated loans receivable
Beginning balance			0
Personal Banking | Residential mortgage loans | Off-Balance sheet exposure
Changes in allowance for losses on allocated loans receivable
Beginning balance	4	6	4	2
Current period provision	(1)	(2)	(1)	2
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Ending balance	3	4	3	4
Personal Banking | Residential mortgage loans | Off-Balance sheet exposure | Cumulative Effect, Period of Adoption, Adjustment
Changes in allowance for losses on allocated loans receivable
Beginning balance			0
Personal Banking | Home equity loans
Changes in allowance for losses on allocated loans receivable
Beginning balance	5,002	5,232	5,902	5,300
Current period provision	201	341	(705)	127
Charge-offs	(320)	(535)	(719)	(1,237)
Recoveries	161	410	566	1,258
Ending balance	5,044	5,448	5,044	5,448
Personal Banking | Home equity loans | Cumulative Effect, Period of Adoption, Adjustment
Changes in allowance for losses on allocated loans receivable
Beginning balance			0
Personal Banking | Home equity loans | Off-Balance sheet exposure
Changes in allowance for losses on allocated loans receivable
Beginning balance	64	64	74	39
Current period provision	3	10	(7)	35
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Ending balance	67	74	67	74
Personal Banking | Home equity loans | Off-Balance sheet exposure | Cumulative Effect, Period of Adoption, Adjustment
Changes in allowance for losses on allocated loans receivable
Beginning balance			0
Personal Banking | Vehicle loans
Changes in allowance for losses on allocated loans receivable
Beginning balance	27,283	15,738	23,059	15,483
Current period provision	984	1,576	7,267	2,159
Charge-offs	(1,524)	(936)	(4,731)	(2,517)
Recoveries	483	626	1,631	1,879
Ending balance	27,226	17,004	27,226	17,004
Personal Banking | Vehicle loans | Cumulative Effect, Period of Adoption, Adjustment
Changes in allowance for losses on allocated loans receivable
Beginning balance			0
Personal Banking | Consumer loans
Changes in allowance for losses on allocated loans receivable
Beginning balance	1,010	779	665	2,884
Current period provision	1,436	1,170	3,463	479
Charge-offs	(1,561)	(1,405)	(3,860)	(3,459)
Recoveries	317	281	934	921
Ending balance	1,202	825	1,202	825
Personal Banking | Consumer loans | Cumulative Effect, Period of Adoption, Adjustment
Changes in allowance for losses on allocated loans receivable
Beginning balance			0
Commercial Banking
Changes in allowance for losses on allocated loans receivable
Beginning balance	73,572	60,448	69,149	71,201
Current period provision	1,732	2,956	6,885	(5,259)
Charge-offs	(1,770)	(1,572)	(4,984)	(7,998)
Recoveries	745	6,743	2,803	10,631
Ending balance	74,279	68,575	74,279	68,575
Commercial Banking | Cumulative Effect, Period of Adoption, Adjustment
Changes in allowance for losses on allocated loans receivable
Beginning balance			426
Commercial Banking | Off-Balance sheet exposure
Changes in allowance for losses on allocated loans receivable
Beginning balance	15,891	7,380	12,835	2,417
Current period provision	(2,983)	3,577	73	8,540
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Ending balance	12,908	10,957	12,908	10,957
Commercial Banking | Off-Balance sheet exposure | Cumulative Effect, Period of Adoption, Adjustment
Changes in allowance for losses on allocated loans receivable
Beginning balance			0
Commercial Banking | Commercial real estate loans
Changes in allowance for losses on allocated loans receivable
Beginning balance	50,056	39,641	44,506	54,141
Current period provision	(1,110)	5,117	3,587	(6,465)
Charge-offs	(484)	(1,329)	(1,556)	(6,745)
Recoveries	120	6,220	1,619	8,718
Ending balance	48,582	49,649	48,582	49,649
Commercial Banking | Commercial real estate loans | Cumulative Effect, Period of Adoption, Adjustment
Changes in allowance for losses on allocated loans receivable
Beginning balance			426
Commercial Banking | Commercial real estate loans | Off-Balance sheet exposure
Changes in allowance for losses on allocated loans receivable
Beginning balance	7,655	3,463	5,375	881
Current period provision	(2,858)	1,919	(578)	4,501
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Ending balance	4,797	5,382	4,797	5,382
Commercial Banking | Commercial real estate loans | Off-Balance sheet exposure | Cumulative Effect, Period of Adoption, Adjustment
Changes in allowance for losses on allocated loans receivable
Beginning balance			0
Commercial Banking | Commercial real estate loans - owner occupied
Changes in allowance for losses on allocated loans receivable
Beginning balance	3,498	4,095	4,004	3,883
Current period provision	(30)	(34)	(515)	167
Charge-offs	0	0	(68)	0
Recoveries	11	26	58	37
Ending balance	3,479	4,087	3,479	4,087
Commercial Banking | Commercial real estate loans - owner occupied | Cumulative Effect, Period of Adoption, Adjustment
Changes in allowance for losses on allocated loans receivable
Beginning balance			0
Commercial Banking | Commercial real estate loans - owner occupied | Off-Balance sheet exposure
Changes in allowance for losses on allocated loans receivable
Beginning balance	320	328	379	142
Current period provision	(180)	(41)	(239)	145
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Ending balance	140	287	140	287
Commercial Banking | Commercial real estate loans - owner occupied | Off-Balance sheet exposure | Cumulative Effect, Period of Adoption, Adjustment
Changes in allowance for losses on allocated loans receivable
Beginning balance			0
Commercial Banking | Commercial loans
Changes in allowance for losses on allocated loans receivable
Beginning balance	20,018	16,712	20,639	13,177
Current period provision	2,872	(2,127)	3,813	1,039
Charge-offs	(1,286)	(243)	(3,360)	(1,253)
Recoveries	614	497	1,126	1,876
Ending balance	22,218	14,839	22,218	14,839
Commercial Banking | Commercial loans | Cumulative Effect, Period of Adoption, Adjustment
Changes in allowance for losses on allocated loans receivable
Beginning balance			0
Commercial Banking | Commercial loans | Off-Balance sheet exposure
Changes in allowance for losses on allocated loans receivable
Beginning balance	7,916	3,589	7,081	1,394
Current period provision	55	1,699	890	3,894
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Ending balance	$ 7,971	$ 5,288	7,971	$ 5,288
Commercial Banking | Commercial loans | Off-Balance sheet exposure | Cumulative Effect, Period of Adoption, Adjustment
Changes in allowance for losses on allocated loans receivable
Beginning balance			$ 0

Loans Receivable - Loan Portfol

Loans Receivable - Loan Portfolio by Portfolio Segment and by Class of Financing Receivable (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Jun. 30, 2023	Dec. 31, 2022	Sep. 30, 2022	Jun. 30, 2022	Dec. 31, 2021
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable	$ 11,310,273		$ 10,920,452
Allowance for credit losses	124,841	$ 124,423	118,036	$ 109,819	$ 98,355	$ 102,241
Nonaccrual loans	76,654		81,236			158,471
Loans 90 days past due and accruing	728		744
TDRs			40,681
Allowance related to TDRs			2,400
Additional commitments to customers with loans classified as TDRs			404
Non-accrual TDRs			29,200	30,406
Personal Banking
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable	6,886,647		6,964,928
Allowance for credit losses	50,562	50,851	48,887	41,244	37,907	31,040
Nonaccrual loans	17,289		15,746			20,098
Loans 90 days past due and accruing	690		407
TDRs			7,749
Allowance related to TDRs			1,615
Additional commitments to customers with loans classified as TDRs			0
Personal Banking | Residential mortgage loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable	3,472,763		3,498,599
Allowance for credit losses	17,090	17,556	19,261	17,967	16,158	7,373
Nonaccrual loans	9,760		7,574			10,402
Loans 90 days past due and accruing	0		0
TDRs			6,279
Allowance related to TDRs			1,069
Additional commitments to customers with loans classified as TDRs			0
Personal Banking | Home equity loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable	1,258,765		1,297,674
Allowance for credit losses	5,044	5,002	5,902	5,448	5,232	5,300
Nonaccrual loans	3,431		4,145			5,758
Loans 90 days past due and accruing	133		0
TDRs			1,470
Allowance related to TDRs			546
Additional commitments to customers with loans classified as TDRs			0
Personal Banking | Vehicle loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable	2,039,699		2,056,783
Allowance for credit losses	27,226	27,283	23,059	17,004	15,738	15,483
Nonaccrual loans	3,817		3,771			3,263
Loans 90 days past due and accruing	57		2
TDRs			0
Allowance related to TDRs			0
Additional commitments to customers with loans classified as TDRs			0
Personal Banking | Consumer loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable	115,420		111,872
Allowance for credit losses	1,202	1,010	665	825	779	2,884
Nonaccrual loans	281		256			675
Loans 90 days past due and accruing	500		405
TDRs			0
Allowance related to TDRs			0
Additional commitments to customers with loans classified as TDRs			0
Commercial Banking
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable	4,423,626		3,955,524
Allowance for credit losses	74,279	73,572	69,149	68,575	60,448	71,201
Nonaccrual loans	59,365		65,490			138,373
Loans 90 days past due and accruing	38		337
TDRs			32,932
Allowance related to TDRs			785
Additional commitments to customers with loans classified as TDRs			404
Commercial Banking | Commercial real estate loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable	2,553,644		2,448,028
Allowance for credit losses	48,582	50,056	44,506	49,649	39,641	54,141
Nonaccrual loans	54,109		62,239			129,666
Loans 90 days past due and accruing	0		0
TDRs			31,980
Allowance related to TDRs			638
Additional commitments to customers with loans classified as TDRs			400
Commercial Banking | Commercial real estate loans - owner occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable	369,373		375,527
Allowance for credit losses	3,479	3,498	4,004	4,087	4,095	3,883
Nonaccrual loans	1,071		624			1,233
Loans 90 days past due and accruing	0		0
TDRs			94
Allowance related to TDRs			31
Additional commitments to customers with loans classified as TDRs			0
Commercial Banking | Commercial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable	1,500,609		1,131,969
Allowance for credit losses	22,218	$ 20,018	20,639	$ 14,839	$ 16,712	13,177
Nonaccrual loans	4,185		2,627			$ 7,474
Loans 90 days past due and accruing	$ 38		337
TDRs			858
Allowance related to TDRs			116
Additional commitments to customers with loans classified as TDRs			$ 4

Loans Receivable - Composition

Loans Receivable - Composition of Impaired Loans by Portfolio Segment and Class of Financing Receivable (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended	12 Months Ended
	Sep. 30, 2023	Sep. 30, 2023	Dec. 31, 2022
Composition of impaired loans by portfolio segment and by class of financing receivable
Nonaccrual loans at beginning balance		$ 81,236	$ 158,471
Nonaccrual loans with an allowance	$ 42,878	42,878	38,722
Nonaccrual loans with no allowance	33,776	33,776	42,514
Nonaccrual loans at ending balance	76,654	76,654	81,236
Loans 90 days past due and accruing	728	728	744
Interest income, accrual method	0	0	678,000
Amortized cost basis of collateral-dependent loans	51,562	51,562	58,110
Real estate
Composition of impaired loans by portfolio segment and by class of financing receivable
Amortized cost basis of collateral-dependent loans	51,562	51,562	57,900
Equipment
Composition of impaired loans by portfolio segment and by class of financing receivable
Amortized cost basis of collateral-dependent loans			210
Personal Banking
Composition of impaired loans by portfolio segment and by class of financing receivable
Nonaccrual loans at beginning balance		15,746	20,098
Nonaccrual loans with an allowance	16,141	16,141	13,892
Nonaccrual loans with no allowance	1,148	1,148	1,854
Nonaccrual loans at ending balance	17,289	17,289	15,746
Loans 90 days past due and accruing	690	690	407
Amortized cost basis of collateral-dependent loans			669
Personal Banking | Real estate
Composition of impaired loans by portfolio segment and by class of financing receivable
Amortized cost basis of collateral-dependent loans			669
Personal Banking | Equipment
Composition of impaired loans by portfolio segment and by class of financing receivable
Amortized cost basis of collateral-dependent loans			0
Personal Banking | Residential mortgage loans
Composition of impaired loans by portfolio segment and by class of financing receivable
Nonaccrual loans at beginning balance		7,574	10,402
Nonaccrual loans with an allowance	9,760	9,760	7,574
Nonaccrual loans with no allowance	0	0	0
Nonaccrual loans at ending balance	9,760	9,760	7,574
Loans 90 days past due and accruing	0	0	0
Amortized cost basis of collateral-dependent loans			569
Personal Banking | Residential mortgage loans | Real estate
Composition of impaired loans by portfolio segment and by class of financing receivable
Amortized cost basis of collateral-dependent loans			569
Personal Banking | Residential mortgage loans | Equipment
Composition of impaired loans by portfolio segment and by class of financing receivable
Amortized cost basis of collateral-dependent loans			0
Personal Banking | Home equity loans
Composition of impaired loans by portfolio segment and by class of financing receivable
Nonaccrual loans at beginning balance		4,145	5,758
Nonaccrual loans with an allowance	3,262	3,262	3,887
Nonaccrual loans with no allowance	169	169	258
Nonaccrual loans at ending balance	3,431	3,431	4,145
Loans 90 days past due and accruing	133	133	0
Amortized cost basis of collateral-dependent loans			100
Personal Banking | Home equity loans | Real estate
Composition of impaired loans by portfolio segment and by class of financing receivable
Amortized cost basis of collateral-dependent loans			100
Personal Banking | Home equity loans | Equipment
Composition of impaired loans by portfolio segment and by class of financing receivable
Amortized cost basis of collateral-dependent loans			0
Personal Banking | Vehicle loans
Composition of impaired loans by portfolio segment and by class of financing receivable
Nonaccrual loans at beginning balance		3,771	3,263
Nonaccrual loans with an allowance	2,838	2,838	2,175
Nonaccrual loans with no allowance	979	979	1,596
Nonaccrual loans at ending balance	3,817	3,817	3,771
Loans 90 days past due and accruing	57	57	2
Personal Banking | Consumer loans
Composition of impaired loans by portfolio segment and by class of financing receivable
Nonaccrual loans at beginning balance		256	675
Nonaccrual loans with an allowance	281	281	256
Nonaccrual loans with no allowance	0	0	0
Nonaccrual loans at ending balance	281	281	256
Loans 90 days past due and accruing	500	500	405
Commercial Banking
Composition of impaired loans by portfolio segment and by class of financing receivable
Nonaccrual loans at beginning balance		65,490	138,373
Nonaccrual loans with an allowance	26,737	26,737	24,830
Nonaccrual loans with no allowance	32,628	32,628	40,660
Nonaccrual loans at ending balance	59,365	59,365	65,490
Loans 90 days past due and accruing	38	38	337
Amortized cost basis of collateral-dependent loans	51,562	51,562	57,441
Commercial Banking | Real estate
Composition of impaired loans by portfolio segment and by class of financing receivable
Amortized cost basis of collateral-dependent loans	51,562	51,562	57,231
Commercial Banking | Equipment
Composition of impaired loans by portfolio segment and by class of financing receivable
Amortized cost basis of collateral-dependent loans			210
Commercial Banking | Commercial real estate loans
Composition of impaired loans by portfolio segment and by class of financing receivable
Nonaccrual loans at beginning balance		62,239	129,666
Nonaccrual loans with an allowance	21,838	21,838	22,182
Nonaccrual loans with no allowance	32,271	32,271	40,057
Nonaccrual loans at ending balance	54,109	54,109	62,239
Loans 90 days past due and accruing	0	0	0
Amortized cost basis of collateral-dependent loans	51,402	51,402	57,056
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	51,402	51,402	57,056
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
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		624	1,233
Nonaccrual loans with an allowance	1,071	1,071	624
Nonaccrual loans with no allowance	0	0	0
Nonaccrual loans at ending balance	1,071	1,071	624
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		2,627	7,474
Nonaccrual loans with an allowance	3,828	3,828	2,024
Nonaccrual loans with no allowance	357	357	603
Nonaccrual loans at ending balance	4,185	4,185	2,627
Loans 90 days past due and accruing	38	38	337
Amortized cost basis of collateral-dependent loans	160	160	385
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	$ 160	$ 160	175
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			$ 210

Loans Receivable - Amortized Co

Loans Receivable - Amortized Cost Basis of Loans Modified (Details) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2023 USD ($)	Sep. 30, 2023 USD ($)
Troubled debt restructurings
Total class of financing receivable	0%	0.01%
Committed to lend additional amounts	$ 31	$ 31
Maturity date
Troubled debt restructurings
Loans modified in period	329	1,593
Combination term extension and interest rate reduction
Troubled debt restructurings
Loans modified in period	$ 85	$ 88
Personal Banking
Troubled debt restructurings
Total class of financing receivable	0.01%	0.01%
Personal Banking | Maturity date
Troubled debt restructurings
Loans modified in period	$ 314	$ 733
Personal Banking | Combination term extension and interest rate reduction
Troubled debt restructurings
Loans modified in period	$ 85	$ 88
Personal Banking | Residential mortgage loans
Troubled debt restructurings
Total class of financing receivable	0.01%	0.01%
Personal Banking | Residential mortgage loans | Maturity date
Troubled debt restructurings
Loans modified in period	$ 192	$ 450
Personal Banking | Residential mortgage loans | Combination term extension and interest rate reduction
Troubled debt restructurings
Loans modified in period	$ 0	$ 0
Personal Banking | Home equity loans
Troubled debt restructurings
Total class of financing receivable	0.02%	0.03%
Personal Banking | Home equity loans | Maturity date
Troubled debt restructurings
Loans modified in period	$ 122	$ 283
Personal Banking | Home equity loans | Combination term extension and interest rate reduction
Troubled debt restructurings
Loans modified in period	$ 85	$ 85
Personal Banking | Consumer loans
Troubled debt restructurings
Total class of financing receivable	0%	0%
Personal Banking | Consumer loans | Maturity date
Troubled debt restructurings
Loans modified in period	$ 0	$ 0
Personal Banking | Consumer loans | Combination term extension and interest rate reduction
Troubled debt restructurings
Loans modified in period	$ 0	$ 3
Commercial Banking
Troubled debt restructurings
Total class of financing receivable	0%	0.02%
Commercial Banking | Maturity date
Troubled debt restructurings
Loans modified in period	$ 15	$ 860
Commercial Banking | Combination term extension and interest rate reduction
Troubled debt restructurings
Loans modified in period	$ 0	$ 0
Commercial Banking | Commercial real estate loans
Troubled debt restructurings
Total class of financing receivable	0%	0.01%
Commercial Banking | Commercial real estate loans | Maturity date
Troubled debt restructurings
Loans modified in period	$ 0	$ 197
Commercial Banking | Commercial real estate loans | 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%	0.04%
Commercial Banking | Commercial loans | Maturity date
Troubled debt restructurings
Loans modified in period	$ 15	$ 663
Commercial Banking | Commercial loans | Combination term extension and interest rate reduction
Troubled debt restructurings
Loans modified in period	$ 0	$ 0

Loans Receivable - Financing Re

Loans Receivable - Financing Receivable Weighted Average Modified Period (Details)	3 Months Ended	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2023
Troubled debt restructurings
Weighted-average term extension in months	135 months	68 months
Weighted-average interest rate reduction	5%	17%
Personal Banking
Troubled debt restructurings
Weighted-average term extension in months	140 months	126 months
Weighted-average interest rate reduction	5%	17%
Personal Banking | Residential mortgage loans
Troubled debt restructurings
Weighted-average term extension in months	169 months	149 months
Weighted-average interest rate reduction	0%
Personal Banking | Home equity loans
Troubled debt restructurings
Weighted-average term extension in months	112 months	96 months
Weighted-average interest rate reduction	5%	5%
Personal Banking | Consumer loans
Troubled debt restructurings
Weighted-average term extension in months	0 years	356 months
Weighted-average interest rate reduction	0%	12%
Commercial Banking
Troubled debt restructurings
Weighted-average term extension in months	23 months	13 months
Weighted-average interest rate reduction	0%
Commercial Banking | Commercial real estate loans
Troubled debt restructurings
Weighted-average term extension in months	0 years	25 months
Weighted-average interest rate reduction	0%
Commercial Banking | Commercial loans
Troubled debt restructurings
Weighted-average term extension in months	23 months	9 months
Weighted-average interest rate reduction	0%

Loans Receivable - Performance

Loans Receivable - Performance of Loans (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2023 USD ($)
Current
Troubled debt restructurings
Loans modified in period	$ 895
30-59 days delinquent
Troubled debt restructurings
Loans modified in period	15
90 days or greater delinquent
Troubled debt restructurings
Loans modified in period	771
Personal Banking | Current
Troubled debt restructurings
Loans modified in period	821
Personal Banking | Residential mortgage loans | Current
Troubled debt restructurings
Loans modified in period	450
Personal Banking | Home equity loans | Current
Troubled debt restructurings
Loans modified in period	368
Personal Banking | Consumer loans | Current
Troubled debt restructurings
Loans modified in period	3
Commercial Banking | Current
Troubled debt restructurings
Loans modified in period	74
Commercial Banking | 30-59 days delinquent
Troubled debt restructurings
Loans modified in period	15
Commercial Banking | 90 days or greater delinquent
Troubled debt restructurings
Loans modified in period	771
Commercial Banking | Commercial real estate loans | Current
Troubled debt restructurings
Loans modified in period	74
Commercial Banking | Commercial real estate loans | 90 days or greater delinquent
Troubled debt restructurings
Loans modified in period	123
Commercial Banking | Commercial loans | 30-59 days delinquent
Troubled debt restructurings
Loans modified in period	15
Commercial Banking | Commercial loans | 90 days or greater delinquent
Troubled debt restructurings
Loans modified in period	$ 648

Loans Receivable - Loans Modifi

Loans Receivable - Loans Modified with Payment Default (Details) - Maturity date $ in Thousands	9 Months Ended
	Sep. 30, 2023 USD ($)
Financing Receivable, Modified, Subsequent Default [Line Items]
Loans with payment default and modified	$ 771
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 - Roll Forward

Loans Receivable - Roll Forward of Troubled Debt Restructurings (Details) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2022 USD ($) contract	Sep. 30, 2022 USD ($) contract	Dec. 31, 2022 USD ($)
Number of Contracts
Beginning TDR balance (contract) | contract	128	134
New TDRs (contract) | contract	6	8
Re-modified TDRs (contract) | contract	4	10
Net paydowns (contract) | contract	0	0
Ending TDR balance (contract) | contract	127	127
Amount
Beginning TDR balance	$ 54,237	$ 30,288
New TDRs	221	25,626
Re-modified TDRs	977	1,178
Net paydowns	(810)	(1,609)
Ending TDR balance	46,750	46,750
Accruing TDRs	16,344	16,344
Non-accrual TDRs	$ 30,406	$ 30,406	$ 29,200
Residential mortgage loans
Number of Contracts
Charge-offs contract) | contract	0	1
Paid-off loans (contract) | contract	1	2
Amount
Charge-offs	$ 0	$ (3)
Paid-off loans	$ (35)	$ (236)
Home equity loans
Number of Contracts
Paid-off loans (contract) | contract	1	3
Amount
Paid-off loans	$ (11)	$ (88)
Commercial real estate loans
Number of Contracts
Paid-off loans (contract) | contract	1	4
Amount
Paid-off loans	$ (3,349)	$ (3,718)
Commercial real estate loans - owner occupied
Number of Contracts
Paid-off loans (contract) | contract		1
Amount
Paid-off loans		$ (44)
Commercial loans
Number of Contracts
Paid-off loans (contract) | contract	3	4
Amount
Paid-off loans	$ (3,459)	$ (3,466)

Loans Receivable - Troubled Deb

Loans Receivable - Troubled Debt Restructuring (Including Re-Modified TDRs) by Portfolio Segment and by Class of Financing Receivable (Details) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2022 USD ($) contract	Sep. 30, 2022 contract	Sep. 30, 2022 USD ($)	Sep. 30, 2022 shareholder
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of contracts | contract	10	18
Recorded investment at the time of modification	$ 1,249		$ 38,458
Current recorded investment	1,198		26,804
Current allowance	$ 147		160
Personal Banking
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of contracts	7	7		7
Recorded investment at the time of modification	$ 307		307
Current recorded investment	298		298
Current allowance	$ 38		38
Personal Banking | Residential mortgage loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of contracts	2	2		2
Recorded investment at the time of modification	$ 147		147
Current recorded investment	144		144
Current allowance	$ 15		15
Personal Banking | Home equity loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of contracts	5	5		5
Recorded investment at the time of modification	$ 160		160
Current recorded investment	154		154
Current allowance	$ 23		23
Commercial Banking
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of contracts | contract	3	11
Recorded investment at the time of modification	$ 942		38,151
Current recorded investment	900		26,506
Current allowance	$ 109		122
Commercial Banking | Commercial real estate loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of contracts | contract	1	5
Recorded investment at the time of modification	$ 610		34,295
Current recorded investment	609		26,212
Current allowance	$ 89		102
Commercial Banking | Commercial loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of contracts | contract	2	6
Recorded investment at the time of modification	$ 332		3,856
Current recorded investment	291		294
Current allowance	$ 20		$ 20

Loans Receivable - Troubled D_2

Loans Receivable - Troubled Debt Restructurings by Type of Modification (Details) $ in Thousands	3 Months Ended	9 Months Ended			12 Months Ended
	Sep. 30, 2022 USD ($) contract	Sep. 30, 2022 contract	Sep. 30, 2022 USD ($)	Sep. 30, 2022 shareholder	Sep. 30, 2022 contract
Troubled debt restructurings
Number of contracts | contract	10	18
Total	$ 1,198		$ 26,804
Number of TDRs modified that subsequently defaulted (in contracts) | contract					0
Rate
Troubled debt restructurings
Total			4,166
Maturity date
Troubled debt restructurings
Total	$ 1,198		22,638
Personal Banking
Troubled debt restructurings
Number of contracts	7	7		7
Total	$ 298		298
Personal Banking | Rate
Troubled debt restructurings
Total			0
Personal Banking | Maturity date
Troubled debt restructurings
Total	$ 298		298
Personal Banking | Residential mortgage loans
Troubled debt restructurings
Number of contracts	2	2		2
Total	$ 144		144
Personal Banking | Residential mortgage loans | Rate
Troubled debt restructurings
Total			0
Personal Banking | Residential mortgage loans | Maturity date
Troubled debt restructurings
Total	$ 144		144
Personal Banking | Home equity loans
Troubled debt restructurings
Number of contracts	5	5		5
Total	$ 154		154
Personal Banking | Home equity loans | Rate
Troubled debt restructurings
Total			0
Personal Banking | Home equity loans | Maturity date
Troubled debt restructurings
Total	$ 154		154
Commercial Banking
Troubled debt restructurings
Number of contracts | contract	3	11
Total	$ 900		26,506
Commercial Banking | Rate
Troubled debt restructurings
Total			4,166
Commercial Banking | Maturity date
Troubled debt restructurings
Total	$ 900		22,340
Commercial Banking | Commercial real estate loans
Troubled debt restructurings
Number of contracts | contract	1	5
Total	$ 609		26,212
Commercial Banking | Commercial real estate loans | Rate
Troubled debt restructurings
Total			4,166
Commercial Banking | Commercial real estate loans | Maturity date
Troubled debt restructurings
Total	$ 609		22,046
Commercial Banking | Commercial loans
Troubled debt restructurings
Number of contracts | contract	2	6
Total	$ 291		294
Commercial Banking | Commercial loans | Rate
Troubled debt restructurings
Total			0
Commercial Banking | Commercial loans | Maturity date
Troubled debt restructurings
Total	$ 291		$ 294

Loans Receivable - Loan Delinqu

Loans Receivable - Loan Delinquencies (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Loan payment delinquencies
Total loans receivable	$ 11,310,273	$ 10,920,452
90 days or greater delinquent and accruing	728	744
Total delinquency
Loan payment delinquencies
Total loans receivable	57,233	85,941
30-59 days delinquent
Loan payment delinquencies
Total loans receivable	21,412	52,235
60-89 days delinquent
Loan payment delinquencies
Total loans receivable	12,012	13,100
90 days or greater delinquent
Loan payment delinquencies
Total loans receivable	23,809	20,606
Current
Loan payment delinquencies
Total loans receivable	11,253,040	10,834,511
Personal Banking
Loan payment delinquencies
Total loans receivable	6,886,647	6,964,928
90 days or greater delinquent and accruing	690	407
Personal Banking | Total delinquency
Loan payment delinquencies
Total loans receivable	37,518	66,097
Personal Banking | 30-59 days delinquent
Loan payment delinquencies
Total loans receivable	15,154	45,579
Personal Banking | 60-89 days delinquent
Loan payment delinquencies
Total loans receivable	9,443	9,608
Personal Banking | 90 days or greater delinquent
Loan payment delinquencies
Total loans receivable	12,921	10,910
Personal Banking | Current
Loan payment delinquencies
Total loans receivable	6,849,129	6,898,831
Personal Banking | Residential mortgage loans
Loan payment delinquencies
Total loans receivable	3,472,763	3,498,599
90 days or greater delinquent and accruing	0	0
Personal Banking | Residential mortgage loans | Total delinquency
Loan payment delinquencies
Total loans receivable	13,663	40,624
Personal Banking | Residential mortgage loans | 30-59 days delinquent
Loan payment delinquencies
Total loans receivable	573	29,487
Personal Banking | Residential mortgage loans | 60-89 days delinquent
Loan payment delinquencies
Total loans receivable	5,395	5,563
Personal Banking | Residential mortgage loans | 90 days or greater delinquent
Loan payment delinquencies
Total loans receivable	7,695	5,574
Personal Banking | Residential mortgage loans | Current
Loan payment delinquencies
Total loans receivable	3,459,100	3,457,975
Personal Banking | Home equity loans
Loan payment delinquencies
Total loans receivable	1,258,765	1,297,674
90 days or greater delinquent and accruing	133	0
Personal Banking | Home equity loans | Total delinquency
Loan payment delinquencies
Total loans receivable	8,254	9,889
Personal Banking | Home equity loans | 30-59 days delinquent
Loan payment delinquencies
Total loans receivable	4,707	6,657
Personal Banking | Home equity loans | 60-89 days delinquent
Loan payment delinquencies
Total loans receivable	1,341	975
Personal Banking | Home equity loans | 90 days or greater delinquent
Loan payment delinquencies
Total loans receivable	2,206	2,257
Personal Banking | Home equity loans | Current
Loan payment delinquencies
Total loans receivable	1,250,511	1,287,785
Personal Banking | Vehicle loans
Loan payment delinquencies
Total loans receivable	2,039,699	2,056,783
90 days or greater delinquent and accruing	57	2
Personal Banking | Vehicle loans | Total delinquency
Loan payment delinquencies
Total loans receivable	13,808	13,918
Personal Banking | Vehicle loans | 30-59 days delinquent
Loan payment delinquencies
Total loans receivable	9,122	8,677
Personal Banking | Vehicle loans | 60-89 days delinquent
Loan payment delinquencies
Total loans receivable	2,412	2,770
Personal Banking | Vehicle loans | 90 days or greater delinquent
Loan payment delinquencies
Total loans receivable	2,274	2,471
Personal Banking | Vehicle loans | Current
Loan payment delinquencies
Total loans receivable	2,025,891	2,042,865
Personal Banking | Consumer loans
Loan payment delinquencies
Total loans receivable	115,420	111,872
90 days or greater delinquent and accruing	500	405
Personal Banking | Consumer loans | Total delinquency
Loan payment delinquencies
Total loans receivable	1,793	1,666
Personal Banking | Consumer loans | 30-59 days delinquent
Loan payment delinquencies
Total loans receivable	752	758
Personal Banking | Consumer loans | 60-89 days delinquent
Loan payment delinquencies
Total loans receivable	295	300
Personal Banking | Consumer loans | 90 days or greater delinquent
Loan payment delinquencies
Total loans receivable	746	608
Personal Banking | Consumer loans | Current
Loan payment delinquencies
Total loans receivable	113,627	110,206
Commercial Banking
Loan payment delinquencies
Total loans receivable	4,423,626	3,955,524
90 days or greater delinquent and accruing	38	337
Commercial Banking | Total delinquency
Loan payment delinquencies
Total loans receivable	19,715	19,844
Commercial Banking | 30-59 days delinquent
Loan payment delinquencies
Total loans receivable	6,258	6,656
Commercial Banking | 60-89 days delinquent
Loan payment delinquencies
Total loans receivable	2,569	3,492
Commercial Banking | 90 days or greater delinquent
Loan payment delinquencies
Total loans receivable	10,888	9,696
Commercial Banking | Current
Loan payment delinquencies
Total loans receivable	4,403,911	3,935,680
Commercial Banking | Commercial real estate loans
Loan payment delinquencies
Total loans receivable	2,553,644	2,448,028
90 days or greater delinquent and accruing	0	0
Commercial Banking | Commercial real estate loans | Total delinquency
Loan payment delinquencies
Total loans receivable	12,781	13,913
Commercial Banking | Commercial real estate loans | 30-59 days delinquent
Loan payment delinquencies
Total loans receivable	3,411	3,947
Commercial Banking | Commercial real estate loans | 60-89 days delinquent
Loan payment delinquencies
Total loans receivable	1,328	2,377
Commercial Banking | Commercial real estate loans | 90 days or greater delinquent
Loan payment delinquencies
Total loans receivable	8,042	7,589
Commercial Banking | Commercial real estate loans | Current
Loan payment delinquencies
Total loans receivable	2,540,863	2,434,115
Commercial Banking | Commercial real estate loans - owner occupied
Loan payment delinquencies
Total loans receivable	369,373	375,527
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	634	339
Commercial Banking | Commercial real estate loans - owner occupied | 30-59 days delinquent
Loan payment delinquencies
Total loans receivable	0	61
Commercial Banking | Commercial real estate loans - owner occupied | 60-89 days delinquent
Loan payment delinquencies
Total loans receivable	260	0
Commercial Banking | Commercial real estate loans - owner occupied | 90 days or greater delinquent
Loan payment delinquencies
Total loans receivable	374	278
Commercial Banking | Commercial real estate loans - owner occupied | Current
Loan payment delinquencies
Total loans receivable	368,739	375,188
Commercial Banking | Commercial loans
Loan payment delinquencies
Total loans receivable	1,500,609	1,131,969
90 days or greater delinquent and accruing	38	337
Commercial Banking | Commercial loans | Total delinquency
Loan payment delinquencies
Total loans receivable	6,300	5,592
Commercial Banking | Commercial loans | 30-59 days delinquent
Loan payment delinquencies
Total loans receivable	2,847	2,648
Commercial Banking | Commercial loans | 60-89 days delinquent
Loan payment delinquencies
Total loans receivable	981	1,115
Commercial Banking | Commercial loans | 90 days or greater delinquent
Loan payment delinquencies
Total loans receivable	2,472	1,829
Commercial Banking | Commercial loans | Current
Loan payment delinquencies
Total loans receivable	$ 1,494,309	$ 1,126,377

Loans Receivable - Credit Quali

Loans Receivable - Credit Quality Indicators (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2023	Dec. 31, 2022
Credit quality indicators
Year one	$ 1,247,754	$ 2,630,339
Year two	2,510,244	2,099,871
Year three	1,877,955	1,415,571
Year four	1,234,436	914,933
Year five	802,441	575,318
Prior	2,481,619	2,274,805
Revolving loans	1,077,236	939,858
Revolving loans converted to term loans	78,588	69,757
Total loans receivable, gross	11,310,273	10,920,452
Revolving loans converted to term loans during the period	13,700	20,700
Special mention and substandard | Minimum
Credit quality indicators
Total loans receivable, gross	1,000
Personal Banking
Credit quality indicators
Year one	786,963	1,761,000
Year two	1,538,860	1,586,953
Year three	1,367,408	953,050
Year four	826,577	516,327
Year five	432,580	255,908
Prior	1,354,790	1,304,430
Revolving loans	534,816	541,954
Revolving loans converted to term loans	44,653	45,306
Total loans receivable, gross	6,886,647	6,964,928
Personal Banking | Residential mortgage loans
Credit quality indicators
Year one	159,472	660,352
Year two	674,268	838,010
Year three	803,873	547,078
Year four	517,142	266,316
Year five	250,133	132,130
Prior	1,067,875	1,054,713
Revolving loans	0	0
Revolving loans converted to term loans	0	0
Total loans receivable, gross	3,472,763	3,498,599
Year one, charge-offs	0
Year two, charge-offs	0
Year three, charge-offs	(5)
Year four, charge-offs	(130)
Year five, charge-offs	0
Prior, charge-offs	(788)
Revolving loans, charge-offs	0
Revolving loans converted to term loans, charge-offs	0
Total loans receivable, charge-offs	(923)
Personal Banking | Residential mortgage loans | Pass
Credit quality indicators
Year one	159,472	659,930
Year two	673,235	837,823
Year three	803,613	546,604
Year four	516,270	265,520
Year five	249,797	131,599
Prior	1,056,864	1,043,394
Revolving loans	0	0
Revolving loans converted to term loans	0	0
Total loans receivable, gross	3,459,251	3,484,870
Personal Banking | Residential mortgage loans | Substandard
Credit quality indicators
Year one	0	422
Year two	1,033	187
Year three	260	474
Year four	872	796
Year five	336	531
Prior	11,011	11,319
Revolving loans	0	0
Revolving loans converted to term loans	0	0
Total loans receivable, gross	13,512	13,729
Personal Banking | Home equity loans
Credit quality indicators
Year one	65,795	114,598
Year two	104,272	126,654
Year three	110,823	173,044
Year four	153,431	110,622
Year five	98,211	50,638
Prior	212,056	202,037
Revolving loans	470,509	475,912
Revolving loans converted to term loans	43,668	44,169
Total loans receivable, gross	1,258,765	1,297,674
Year one, charge-offs	0
Year two, charge-offs	(53)
Year three, charge-offs	(46)
Year four, charge-offs	0
Year five, charge-offs	(48)
Prior, charge-offs	(257)
Revolving loans, charge-offs	(142)
Revolving loans converted to term loans, charge-offs	(173)
Total loans receivable, charge-offs	(719)
Personal Banking | Home equity loans | Pass
Credit quality indicators
Year one	65,795	114,598
Year two	104,272	126,608
Year three	110,823	173,044
Year four	153,431	110,495
Year five	98,062	50,314
Prior	210,273	198,971
Revolving loans	469,459	475,229
Revolving loans converted to term loans	42,870	42,887
Total loans receivable, gross	1,254,985	1,292,146
Personal Banking | Home equity loans | Substandard
Credit quality indicators
Year one	0	0
Year two	0	46
Year three	0	0
Year four	0	127
Year five	149	324
Prior	1,783	3,066
Revolving loans	1,050	683
Revolving loans converted to term loans	798	1,282
Total loans receivable, gross	3,780	5,528
Personal Banking | Vehicle loans
Credit quality indicators
Year one	541,590	966,724
Year two	747,126	612,406
Year three	446,320	228,564
Year four	153,511	135,823
Year five	82,495	70,728
Prior	68,657	42,538
Revolving loans	0	0
Revolving loans converted to term loans	0	0
Total loans receivable, gross	2,039,699	2,056,783
Year one, charge-offs	(324)
Year two, charge-offs	(1,385)
Year three, charge-offs	(1,425)
Year four, charge-offs	(416)
Year five, charge-offs	(497)
Prior, charge-offs	(684)
Revolving loans, charge-offs	0
Revolving loans converted to term loans, charge-offs	0
Total loans receivable, charge-offs	(4,731)
Personal Banking | Vehicle loans | Pass
Credit quality indicators
Year one	541,270	966,432
Year two	746,225	611,310
Year three	444,934	227,897
Year four	153,264	135,134
Year five	81,931	70,071
Prior	68,201	42,166
Revolving loans	0	0
Revolving loans converted to term loans	0	0
Total loans receivable, gross	2,035,825	2,053,010
Personal Banking | Vehicle loans | Substandard
Credit quality indicators
Year one	320	292
Year two	901	1,096
Year three	1,386	667
Year four	247	689
Year five	564	657
Prior	456	372
Revolving loans	0	0
Revolving loans converted to term loans	0	0
Total loans receivable, gross	3,874	3,773
Personal Banking | Consumer loans
Credit quality indicators
Year one	20,106	19,326
Year two	13,194	9,883
Year three	6,392	4,364
Year four	2,493	3,566
Year five	1,741	2,412
Prior	6,202	5,142
Revolving loans	64,307	66,042
Revolving loans converted to term loans	985	1,137
Total loans receivable, gross	115,420	111,872
Year one, charge-offs	(2,055)
Year two, charge-offs	(340)
Year three, charge-offs	(271)
Year four, charge-offs	(116)
Year five, charge-offs	(150)
Prior, charge-offs	(766)
Revolving loans, charge-offs	(149)
Revolving loans converted to term loans, charge-offs	(13)
Total loans receivable, charge-offs	(3,860)
Personal Banking | Consumer loans | Pass
Credit quality indicators
Year one	20,061	19,302
Year two	13,137	9,874
Year three	6,361	4,327
Year four	2,485	3,557
Year five	1,727	2,409
Prior	6,201	5,094
Revolving loans	63,801	65,610
Revolving loans converted to term loans	866	1,037
Total loans receivable, gross	114,639	111,210
Personal Banking | Consumer loans | Substandard
Credit quality indicators
Year one	45	24
Year two	57	9
Year three	31	37
Year four	8	9
Year five	14	3
Prior	1	48
Revolving loans	506	432
Revolving loans converted to term loans	119	100
Total loans receivable, gross	781	662
Commercial Banking
Credit quality indicators
Year one	460,791	869,339
Year two	971,384	512,918
Year three	510,547	462,521
Year four	407,859	398,606
Year five	369,861	319,410
Prior	1,126,829	970,375
Revolving loans	542,420	397,904
Revolving loans converted to term loans	33,935	24,451
Total loans receivable, gross	4,423,626	3,955,524
Commercial Banking | Commercial real estate loans
Credit quality indicators
Year one	127,229	322,050
Year two	445,128	368,132
Year three	383,957	390,267
Year four	360,362	293,154
Year five	279,685	252,021
Prior	907,111	782,899
Revolving loans	24,709	25,570
Revolving loans converted to term loans	25,463	13,935
Total loans receivable, gross	2,553,644	2,448,028
Year one, charge-offs	0
Year two, charge-offs	0
Year three, charge-offs	(492)
Year four, charge-offs	0
Year five, charge-offs	(51)
Prior, charge-offs	(1,013)
Revolving loans, charge-offs	0
Revolving loans converted to term loans, charge-offs	0
Total loans receivable, charge-offs	(1,556)
Commercial Banking | Commercial real estate loans | Pass
Credit quality indicators
Year one	127,229	322,050
Year two	437,503	346,355
Year three	356,152	369,868
Year four	330,522	244,188
Year five	225,478	209,500
Prior	776,377	696,628
Revolving loans	23,845	24,954
Revolving loans converted to term loans	25,345	13,314
Total loans receivable, gross	2,302,451	2,226,857
Commercial Banking | Commercial real estate loans | Special mention
Credit quality indicators
Year one	0	0
Year two	7,451	17,216
Year three	26,749	16,782
Year four	21,732	87
Year five	5,615	1,000
Prior	34,909	15,887
Revolving loans	350	157
Revolving loans converted to term loans	0	15
Total loans receivable, gross	96,806	51,144
Commercial Banking | Commercial real estate loans | Substandard
Credit quality indicators
Year one	0	0
Year two	174	4,561
Year three	1,056	3,617
Year four	8,108	48,879
Year five	48,592	41,521
Prior	95,825	70,384
Revolving loans	514	459
Revolving loans converted to term loans	118	606
Total loans receivable, gross	154,387	170,027
Commercial Banking | Commercial real estate loans - owner occupied
Credit quality indicators
Year one	17,830	63,031
Year two	68,347	51,673
Year three	48,689	18,007
Year four	17,879	54,685
Year five	49,570	48,307
Prior	161,894	133,634
Revolving loans	2,237	2,862
Revolving loans converted to term loans	2,927	3,328
Total loans receivable, gross	369,373	375,527
Year one, charge-offs	0
Year two, charge-offs	0
Year three, charge-offs	0
Year four, charge-offs	0
Year five, charge-offs	0
Prior, charge-offs	(68)
Revolving loans, charge-offs	0
Revolving loans converted to term loans, charge-offs	0
Total loans receivable, charge-offs	(68)
Commercial Banking | Commercial real estate loans - owner occupied | Pass
Credit quality indicators
Year one	17,830	62,905
Year two	50,716	51,673
Year three	48,567	17,989
Year four	14,845	49,600
Year five	44,834	43,570
Prior	148,778	123,278
Revolving loans	2,237	2,477
Revolving loans converted to term loans	2,214	1,460
Total loans receivable, gross	330,021	352,952
Commercial Banking | Commercial real estate loans - owner occupied | Special mention
Credit quality indicators
Year one	0	126
Year two	17,631	0
Year three	0	18
Year four	1,690	0
Year five	0	2,297
Prior	7,808	1,106
Revolving loans	0	385
Revolving loans converted to term loans	0	0
Total loans receivable, gross	27,129	3,932
Commercial Banking | Commercial real estate loans - owner occupied | Substandard
Credit quality indicators
Year one	0	0
Year two	0	0
Year three	122	0
Year four	1,344	5,085
Year five	4,736	2,440
Prior	5,308	9,250
Revolving loans	0	0
Revolving loans converted to term loans	713	1,868
Total loans receivable, gross	12,223	18,643
Commercial Banking | Commercial loans
Credit quality indicators
Year one	315,732	484,258
Year two	457,909	93,113
Year three	77,901	54,247
Year four	29,618	50,767
Year five	40,606	19,082
Prior	57,824	53,842
Revolving loans	515,474	369,472
Revolving loans converted to term loans	5,545	7,188
Total loans receivable, gross	1,500,609	1,131,969
Year one, charge-offs	0
Year two, charge-offs	(1,526)
Year three, charge-offs	(517)
Year four, charge-offs	(430)
Year five, charge-offs	(110)
Prior, charge-offs	(715)
Revolving loans, charge-offs	(60)
Revolving loans converted to term loans, charge-offs	(2)
Total loans receivable, charge-offs	(3,360)
Commercial Banking | Commercial loans | Pass
Credit quality indicators
Year one	315,190	481,797
Year two	455,098	90,320
Year three	77,266	52,833
Year four	28,754	46,966
Year five	37,787	17,250
Prior	56,731	53,107
Revolving loans	501,722	354,402
Revolving loans converted to term loans	4,285	4,032
Total loans receivable, gross	1,476,833	1,100,707
Commercial Banking | Commercial loans | Special mention
Credit quality indicators
Year one	542	628
Year two	315	2,190
Year three	58	506
Year four	369	1,704
Year five	316	227
Prior	68	0
Revolving loans	2,022	2,129
Revolving loans converted to term loans	0	0
Total loans receivable, gross	3,690	7,384
Commercial Banking | Commercial loans | Substandard
Credit quality indicators
Year one	0	1,833
Year two	2,496	603
Year three	577	908
Year four	495	2,097
Year five	2,503	1,605
Prior	1,025	735
Revolving loans	11,730	12,941
Revolving loans converted to term loans	1,260	3,156
Total loans receivable, gross	$ 20,086	$ 23,878

Goodwill and Other Intangible_3

Goodwill and Other Intangible Assets - Intangible Assets (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Amortizable intangible assets:
Intangible asset - net	$ 6,013		$ 6,013		$ 8,560
Estimated amortization expense
Amortization expense	795	$ 1,047	2,546	$ 3,345
For the year ending December 31, 2023	3,270		3,270
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	305		305
Core deposits
Amortizable intangible assets:
Intangible asset - gross	74,899		74,899		74,899
Less: accumulated amortization	(68,886)		(68,886)		(66,367)
Intangible asset - net	6,013		6,013		8,532
Customer and contract
Amortizable intangible assets:
Intangible asset - gross	12,775		12,775		12,775
Less: accumulated amortization	(12,775)		(12,775)		(12,747)
Intangible asset - net	$ 0		$ 0		$ 28

Goodwill and Other Intangible_4

Goodwill and Other Intangible Assets - Changes in the Carrying Amount of Goodwill (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2023	Sep. 30, 2023	Dec. 31, 2022
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill impairment	$ 0
Changes in the carrying amount of goodwill
Goodwill		$ 380,997	$ 380,997

Borrowed Funds - Schedule of Bo

Borrowed Funds - Schedule of Borrowed Funds (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Debt Instrument [Line Items]
Borrowed funds	$ 604,587	$ 681,166
Collateralized borrowings, due within one year
Debt Instrument [Line Items]
Borrowed funds	$ 48,587	$ 105,766
Average rate	1.52%	0.27%
Collateral received, due within one year
Debt Instrument [Line Items]
Borrowed funds	$ 61,600	$ 24,100
Average rate	5.16%	4.17%
Federal Home Loan Bank of Pittsburgh | Term notes payable to the FHLB of Pittsburgh, due within one year
Debt Instrument [Line Items]
Borrowed funds	$ 375,400	$ 500,000
Average rate	5.65%	4.55%
Federal Home Loan Bank of Pittsburgh | Notes payable to the FHLB of Pittsburgh, due within one year
Debt Instrument [Line Items]
Borrowed funds	$ 119,000	$ 51,300
Average rate	5.68%	4.45%

Borrowed Funds - Narrative (Det

Borrowed Funds - Narrative (Details)		9 Months Ended
	Sep. 09, 2020 USD ($)	Sep. 30, 2023 USD ($) business_trust advance	Dec. 31, 2022 USD ($)
Debt Instrument [Line Items]
Total loans receivable, net		$ 11,185,432,000	$ 10,802,416,000
Borrowed funds		604,587,000	681,166,000
Subordinated debt		$ 114,102,000	113,840,000
Number of statutory business trusts owned | business_trust		7
Trust Preferred Investments
Debt Instrument [Line Items]
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		48,587,000	105,766,000
Cash and securities collateral		89,300,000
Collateral received, due within one year
Debt Instrument [Line Items]
Borrowed funds		$ 61,600,000	24,100,000
Subordinated debt
Debt Instrument [Line Items]
Debt issued	$ 125,000,000
Stated rate (as a percent)	4%
Repurchase amount			10,200,000
Amount outstanding after repurchase			114,800,000
Debt issuance costs	$ 1,800,000
Debt issuance amortization period (in years)	5 years
Subordinated debt | SOFR
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)	3.89%
Federal Home Loan Bank of Pittsburgh
Debt Instrument [Line Items]
Number of advances | advance		10
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		119,000,000	51,300,000
Federal Home Loan Bank of Pittsburgh | Term notes payable to FHLB
Debt Instrument [Line Items]
Borrowed funds		375,400,000	$ 500,000,000
Federal Home Loan Bank of Pittsburgh | Term notes payable to FHLB | Debt Instrument, Redemption, Period One
Debt Instrument [Line Items]
Debt issued		$ 400,000,000
Stated rate (as a percent)		5.72%
Federal Home Loan Bank of Pittsburgh | Term notes payable to FHLB | Debt Instrument, Redemption, Period Two
Debt Instrument [Line Items]
Debt issued		$ 100,000,000
Stated rate (as a percent)		5.65%
Federal Home Loan Bank of Pittsburgh | Term notes payable to FHLB | Debt Instrument, Redemption, Period Three
Debt Instrument [Line Items]
Debt issued		$ 100,000,000
Stated rate (as a percent)		5.65%
Federal Home Loan Bank of Pittsburgh | Term notes payable to FHLB | Debt Instrument, Redemption, Period Four
Debt Instrument [Line Items]
Debt issued		$ 25,000,000
Stated rate (as a percent)		5.63%
Federal Home Loan Bank of Pittsburgh | Term notes payable to FHLB | Debt Instrument, Redemption, Period Five
Debt Instrument [Line Items]
Debt issued		$ 25,000,000
Stated rate (as a percent)		5.66%
Federal Home Loan Bank of Pittsburgh | Term notes payable to FHLB | Debt Instrument, Redemption, Period Six
Debt Instrument [Line Items]
Debt issued		$ 25,000,000
Stated rate (as a percent)		5.63%
Federal Home Loan Bank of Pittsburgh | Term notes payable to FHLB | Debt Instrument, Redemption, Period Seven
Debt Instrument [Line Items]
Debt issued		$ 25,000,000
Stated rate (as a percent)		5.65%
Federal Home Loan Bank of Pittsburgh | Term notes payable to FHLB | Debt Instrument, Redemption, Period Eight
Debt Instrument [Line Items]
Debt issued		$ 25,000,000
Stated rate (as a percent)		5.62%
Federal Home Loan Bank of Pittsburgh | Term notes payable to FHLB | Debt Instrument, Redemption, Period Nine
Debt Instrument [Line Items]
Debt issued		$ 25,000,000
Stated rate (as a percent)		5.63%
Federal Home Loan Bank of Pittsburgh | Term notes payable to FHLB | Debt Instrument, Redemption, Period Ten
Debt Instrument [Line Items]
Debt issued		$ 25,000,000
Stated rate (as a percent)		5.65%
Federal Home Loan Bank of Pittsburgh | Residential First Mortgage and Other Loans
Debt Instrument [Line Items]
Total loans receivable, net		$ 6,049,000,000

Borrowed Funds - Schedule of Ca

Borrowed Funds - Schedule of Capital Debt Securities (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2023	Dec. 31, 2022
Debt Instrument [Line Items]
Junior subordinated debentures	$ 129,509	$ 129,314
Trust Preferred Investments
Debt Instrument [Line Items]
Junior subordinated debentures	129,509	129,314
Trust Preferred Investments | Northwest Bancorp Capital Trust III
Debt Instrument [Line Items]
Capital debt securities	50,000
Junior subordinated debentures	$ 51,547	51,547
Trust Preferred Investments | Northwest Bancorp Capital Trust III | SOFR
Debt Instrument [Line Items]
Interest rate	1.38%
Trust Preferred Investments | Northwest Bancorp Statutory Trust IV
Debt Instrument [Line Items]
Capital debt securities	$ 50,000
Junior subordinated debentures	$ 51,547	51,547
Trust Preferred Investments | Northwest Bancorp Statutory Trust IV | SOFR
Debt Instrument [Line Items]
Interest rate	1.38%
Trust Preferred Investments | LNB Trust II
Debt Instrument [Line Items]
Capital debt securities	$ 7,875
Junior subordinated debentures	$ 8,119	8,119
Trust Preferred Investments | LNB Trust II | SOFR
Debt Instrument [Line Items]
Interest rate	1.48%
Trust Preferred Investments | Union National Capital Trust I
Debt Instrument [Line Items]
Capital debt securities	$ 8,000
Junior subordinated debentures	$ 7,993	7,975
Trust Preferred Investments | Union National Capital Trust I | SOFR
Debt Instrument [Line Items]
Interest rate	2.85%
Trust Preferred Investments | Union National Capital Trust II
Debt Instrument [Line Items]
Capital debt securities	$ 3,000
Junior subordinated debentures	$ 2,789	2,768
Trust Preferred Investments | Union National Capital Trust II | SOFR
Debt Instrument [Line Items]
Interest rate	2%
Trust Preferred Investments | MFBC Statutory Trust I
Debt Instrument [Line Items]
Capital debt securities	$ 5,000
Junior subordinated debentures	$ 3,762	3,684
Trust Preferred Investments | MFBC Statutory Trust I | SOFR
Debt Instrument [Line Items]
Interest rate	1.70%
Trust Preferred Investments | Universal Preferred Trust
Debt Instrument [Line Items]
Capital debt securities	$ 5,000
Junior subordinated debentures	$ 3,752	$ 3,674
Trust Preferred Investments | Universal Preferred Trust | SOFR
Debt Instrument [Line Items]
Interest rate	1.69%

Guarantees (Details)

Guarantees (Details) $ in Thousands	Sep. 30, 2023 USD ($)
Credit Card
Guarantor Obligations [Line Items]
Derivative, notional amount	$ 3,400
Letter of Credit
Guarantor Obligations [Line Items]
Maximum exposure collateralized	45,900
Maximum potential amount of future payments	28,700
Liability recognized for the obligations	1,000
Letter of Credit | Credit Card
Guarantor Obligations [Line Items]
Maximum exposure collateralized	578
Maximum potential amount of future payments	$ 5,000

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, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Earnings Per Share [Abstract]
Net income	$ 39,220	$ 37,304	$ 105,943	$ 99,017
Less: Dividends and undistributed earnings allocated to participating securities	99	166	267	441
Net income available to common shareholders basic	39,121	37,138	105,676	98,576
Net income available to common shareholders diluted	$ 39,121	$ 37,138	$ 105,676	$ 98,576
Weighted average common shares outstanding (in shares)	126,767,507	126,320,706	126,629,786	126,082,217
Add: Participating shares outstanding (in shares)	320,177	565,729	320,177	565,729
Total weighted average common shares and dilutive potential shares (in shares)	127,087,684	126,886,435	126,949,963	126,647,946
Basic earnings per share (in dollars per share)	$ 0.31	$ 0.29	$ 0.83	$ 0.78
Diluted earnings per share (in dollars per share)	$ 0.31	$ 0.29	$ 0.83	$ 0.78

Pension and Other Post-Retire_3

Pension and Other Post-Retirement Benefits (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Pension benefits
Components of net periodic benefit cost
Service cost	$ 1,560	$ 2,599	$ 4,680	$ 7,797
Interest cost	2,245	1,671	6,735	5,013
Expected return on plan assets	(3,479)	(3,864)	(10,437)	(11,592)
Amortization of prior service cost	(564)	(564)	(1,692)	(1,692)
Amortization of the net loss	20	381	60	1,143
Net periodic cost	(218)	223	(654)	669
Other post-retirement benefits
Components of net periodic benefit cost
Service cost	0	0	0	0
Interest cost	7	10	21	30
Expected return on plan assets	0	0	0	0
Amortization of prior service cost	0	0	0	0
Amortization of the net loss	10	2	30	6
Net periodic cost	$ 17	$ 12	$ 51	$ 36

Disclosures About Fair Value _3

Disclosures About Fair Value of Financial Instruments - Narrative (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2023	Dec. 31, 2022
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, 2023	Dec. 31, 2022
Financial assets:
Securities held-to-maturity	$ 682,681	$ 751,384
Accrued interest receivable	42,624	35,528
Financial liabilities:
Subordinated debt	114,102	113,840
Junior subordinated debentures	129,509	129,314
Derivatives not designated as hedging instruments
Financial assets:
Derivative assets	62,719	27,329
Financial liabilities:
Derivative liabilities	57,325	45,505
Level 1
Financial assets:
Cash and cash equivalents	161,995	139,365
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	42,624	35,528
FHLB stock	0	0
Total financial assets	204,619	174,893
Financial liabilities:
Savings and checking deposits	9,531,544	10,412,263
Time deposits	0	0
Borrowed funds	617,832	680,996
Subordinated debt	0	0
Junior subordinated debentures	0	0
Accrued interest payable	7,915	3,231
Total financial liabilities	10,157,291	11,096,490
Level 1 | Interest rate lock commitments
Financial assets:
Derivative assets	0	0
Level 1 | Forward commitments
Financial assets:
Derivative assets		0
Financial liabilities:
Derivative liabilities	0
Level 1 | Foreign exchange swaps
Financial assets:
Derivative assets	0
Financial liabilities:
Derivative liabilities	0	0
Level 1 | Interest rate swap agreements
Financial assets:
Derivative assets		0
Financial liabilities:
Derivative liabilities		0
Level 1 | Interest rate swap agreements | Derivatives designated as hedging instruments
Financial assets:
Derivative assets	0
Level 1 | Interest rate swap agreements | Derivatives not designated as hedging instruments
Financial assets:
Derivative assets	0
Financial liabilities:
Derivative liabilities	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	1,010,076	1,218,108
Securities held-to-maturity	682,681	751,384
Loans receivable, net	0	0
Loans held-for-sale	0	0
Accrued interest receivable	0	0
FHLB stock	0	0
Total financial assets	1,754,812	1,996,262
Financial liabilities:
Savings and checking deposits	0	0
Time deposits	0	0
Borrowed funds	0	0
Subordinated debt	102,456	102,554
Junior subordinated debentures	0	0
Accrued interest payable	0	0
Total financial liabilities	159,781	148,059
Level 2 | Interest rate lock commitments
Financial assets:
Derivative assets	0	0
Level 2 | Forward commitments
Financial assets:
Derivative assets		128
Financial liabilities:
Derivative liabilities	23
Level 2 | Foreign exchange swaps
Financial assets:
Derivative assets	203
Financial liabilities:
Derivative liabilities	10	23
Level 2 | Interest rate swap agreements
Financial assets:
Derivative assets		26,642
Financial liabilities:
Derivative liabilities		45,464
Level 2 | Interest rate swap agreements | Derivatives designated as hedging instruments
Financial assets:
Derivative assets	4,603
Level 2 | Interest rate swap agreements | Derivatives not designated as hedging instruments
Financial assets:
Derivative assets	57,249
Financial liabilities:
Derivative liabilities	57,275
Level 2 | Risk participation agreements
Financial liabilities:
Derivative liabilities	17	18
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	10,031,968	9,910,852
Loans held-for-sale	10,592	9,913
Accrued interest receivable	0	0
FHLB stock	0	0
Total financial assets	10,043,224	9,921,324
Financial liabilities:
Savings and checking deposits	0	0
Time deposits	2,250,768	1,059,790
Borrowed funds	0	0
Subordinated debt	0	0
Junior subordinated debentures	136,461	133,546
Accrued interest payable	0	0
Total financial liabilities	2,387,229	1,193,336
Level 3 | Interest rate lock commitments
Financial assets:
Derivative assets	664	559
Level 3 | Forward commitments
Financial assets:
Derivative assets		0
Financial liabilities:
Derivative liabilities	0
Level 3 | Foreign exchange swaps
Financial assets:
Derivative assets	0
Financial liabilities:
Derivative liabilities	0	0
Level 3 | Interest rate swap agreements
Financial assets:
Derivative assets		0
Financial liabilities:
Derivative liabilities		0
Level 3 | Interest rate swap agreements | Derivatives designated as hedging instruments
Financial assets:
Derivative assets	0
Level 3 | Interest rate swap agreements | Derivatives not designated as hedging instruments
Financial assets:
Derivative assets	0
Financial liabilities:
Derivative liabilities	0
Level 3 | Risk participation agreements
Financial liabilities:
Derivative liabilities	0	0
Carrying amount
Financial assets:
Cash and cash equivalents	161,995	139,365
Securities available-for-sale	1,010,076	1,218,108
Securities held-to-maturity	830,106	881,249
Loans receivable, net	11,174,840	10,792,503
Loans held-for-sale	10,592	9,913
Accrued interest receivable	42,624	35,528
FHLB stock	40,404	40,143
Total financial assets	13,333,356	13,144,138
Financial liabilities:
Savings and checking deposits	9,531,544	10,412,263
Time deposits	2,258,338	1,052,285
Borrowed funds	604,587	681,166
Subordinated debt	114,102	113,840
Junior subordinated debentures	129,509	129,314
Accrued interest payable	7,915	3,231
Total financial liabilities	12,703,320	12,437,604
Carrying amount | Interest rate lock commitments
Financial assets:
Derivative assets	664	559
Carrying amount | Forward commitments
Financial assets:
Derivative assets		128
Financial liabilities:
Derivative liabilities	23
Carrying amount | Foreign exchange swaps
Financial assets:
Derivative assets	203
Financial liabilities:
Derivative liabilities	10	23
Carrying amount | Interest rate swap agreements
Financial assets:
Derivative assets		26,642
Financial liabilities:
Derivative liabilities		45,464
Carrying amount | Interest rate swap agreements | Derivatives designated as hedging instruments
Financial assets:
Derivative assets	4,603
Carrying amount | Interest rate swap agreements | Derivatives not designated as hedging instruments
Financial assets:
Derivative assets	57,249
Financial liabilities:
Derivative liabilities	57,275
Carrying amount | Risk participation agreements
Financial liabilities:
Derivative liabilities	17	18
Estimated fair value
Financial assets:
Cash and cash equivalents	161,995	139,365
Securities available-for-sale	1,010,076	1,218,108
Securities held-to-maturity	682,681	751,384
Loans receivable, net	10,031,968	9,910,852
Loans held-for-sale	10,592	9,913
Accrued interest receivable	42,624	35,528
FHLB stock	40,404	40,143
Total financial assets	12,043,059	12,132,622
Financial liabilities:
Savings and checking deposits	9,531,544	10,412,263
Time deposits	2,250,768	1,059,790
Borrowed funds	617,832	680,996
Subordinated debt	102,456	102,554
Junior subordinated debentures	136,461	133,546
Accrued interest payable	7,915	3,231
Total financial liabilities	12,704,301	12,437,885
Estimated fair value | Interest rate lock commitments
Financial assets:
Derivative assets	664	559
Estimated fair value | Forward commitments
Financial assets:
Derivative assets		128
Financial liabilities:
Derivative liabilities	23
Estimated fair value | Foreign exchange swaps
Financial assets:
Derivative assets	203
Financial liabilities:
Derivative liabilities	10	23
Estimated fair value | Interest rate swap agreements
Financial assets:
Derivative assets		26,642
Financial liabilities:
Derivative liabilities		45,464
Estimated fair value | Interest rate swap agreements | Derivatives designated as hedging instruments
Financial assets:
Derivative assets	4,603
Estimated fair value | Interest rate swap agreements | Derivatives not designated as hedging instruments
Financial assets:
Derivative assets	57,249
Financial liabilities:
Derivative liabilities	57,275
Estimated fair value | Risk participation agreements
Financial liabilities:
Derivative liabilities	$ 17	$ 18

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, 2023	Dec. 31, 2022
Derivatives not designated as hedging instruments
Assets and liabilities measured at fair value on a recurring basis
Derivative assets	$ 62,719	$ 27,329
Derivative liabilities	57,325	45,505
Level 1
Assets and liabilities measured at fair value on a recurring basis
Securities available-for-sale	0	0
Total financial assets	204,619	174,893
Level 2
Assets and liabilities measured at fair value on a recurring basis
Securities available-for-sale	1,010,076	1,218,108
Total financial assets	1,754,812	1,996,262
Level 3
Assets and liabilities measured at fair value on a recurring basis
Securities available-for-sale	0	0
Total financial assets	10,043,224	9,921,324
Recurring
Assets and liabilities measured at fair value on a recurring basis
Securities available-for-sale	170,967	224,537
Total mortgage-backed securities	839,109	993,571
Total financial assets	1,072,795	1,245,437
Total liabilities	57,325	45,505
Recurring | Level 1
Assets and liabilities measured at fair value on a recurring basis
Securities available-for-sale	0	0
Total mortgage-backed securities	0	0
Total financial assets	0	0
Total liabilities	0	0
Recurring | Level 2
Assets and liabilities measured at fair value on a recurring basis
Securities available-for-sale	170,967	224,537
Total mortgage-backed securities	839,109	993,571
Total financial assets	1,072,131	1,244,878
Total liabilities	57,325	45,505
Recurring | Level 3
Assets and liabilities measured at fair value on a recurring basis
Securities available-for-sale	0	0
Total mortgage-backed securities	0	0
Total financial assets	664	559
Total liabilities	0	0
U.S. government and agencies | Recurring
Assets and liabilities measured at fair value on a recurring basis
Securities available-for-sale	56,526	60,592
U.S. government and agencies | Recurring | Level 1
Assets and liabilities measured at fair value on a recurring basis
Securities available-for-sale	0	0
U.S. government and agencies | Recurring | Level 2
Assets and liabilities measured at fair value on a recurring basis
Securities available-for-sale	56,526	60,592
U.S. government and agencies | Recurring | Level 3
Assets and liabilities measured at fair value on a recurring basis
Securities available-for-sale	0	0
Government-sponsored enterprises | Recurring
Assets and liabilities measured at fair value on a recurring basis
Securities available-for-sale	38,906	39,201
Government-sponsored enterprises | Recurring | Level 1
Assets and liabilities measured at fair value on a recurring basis
Securities available-for-sale	0	0
Government-sponsored enterprises | Recurring | Level 2
Assets and liabilities measured at fair value on a recurring basis
Securities available-for-sale	38,906	39,201
Government-sponsored enterprises | Recurring | Level 3
Assets and liabilities measured at fair value on a recurring basis
Securities available-for-sale	0	0
States and political subdivisions | Recurring
Assets and liabilities measured at fair value on a recurring basis
Securities available-for-sale	68,071	111,766
States and political subdivisions | Recurring | Level 1
Assets and liabilities measured at fair value on a recurring basis
Securities available-for-sale	0	0
States and political subdivisions | Recurring | Level 2
Assets and liabilities measured at fair value on a recurring basis
Securities available-for-sale	68,071	111,766
States and political subdivisions | Recurring | Level 3
Assets and liabilities measured at fair value on a recurring basis
Securities available-for-sale	0	0
Corporate | Recurring
Assets and liabilities measured at fair value on a recurring basis
Securities available-for-sale	7,464	12,978
Corporate | Recurring | Level 1
Assets and liabilities measured at fair value on a recurring basis
Securities available-for-sale	0	0
Corporate | Recurring | Level 2
Assets and liabilities measured at fair value on a recurring basis
Securities available-for-sale	7,464	12,978
Corporate | Recurring | Level 3
Assets and liabilities measured at fair value on a recurring basis
Securities available-for-sale	0	0
GNMA | Recurring
Assets and liabilities measured at fair value on a recurring basis
Residential mortgage-backed securities	17,073	12,434
Collateralized mortgage obligations	318,652	364,553
GNMA | Recurring | Level 1
Assets and liabilities measured at fair value on a recurring basis
Residential mortgage-backed securities	0	0
Collateralized mortgage obligations	0	0
GNMA | Recurring | Level 2
Assets and liabilities measured at fair value on a recurring basis
Residential mortgage-backed securities	17,073	12,434
Collateralized mortgage obligations	318,652	364,553
GNMA | Recurring | Level 3
Assets and liabilities measured at fair value on a recurring basis
Residential mortgage-backed securities	0	0
Collateralized mortgage obligations	0	0
FNMA | Recurring
Assets and liabilities measured at fair value on a recurring basis
Residential mortgage-backed securities	99,874	117,218
Collateralized mortgage obligations	148,389	185,588
FNMA | Recurring | Level 1
Assets and liabilities measured at fair value on a recurring basis
Residential mortgage-backed securities	0	0
Collateralized mortgage obligations	0	0
FNMA | Recurring | Level 2
Assets and liabilities measured at fair value on a recurring basis
Residential mortgage-backed securities	99,874	117,218
Collateralized mortgage obligations	148,389	185,588
FNMA | Recurring | Level 3
Assets and liabilities measured at fair value on a recurring basis
Residential mortgage-backed securities	0	0
Collateralized mortgage obligations	0	0
FHLMC | Recurring
Assets and liabilities measured at fair value on a recurring basis
Residential mortgage-backed securities	68,926	74,991
Collateralized mortgage obligations	186,190	238,781
FHLMC | Recurring | Level 1
Assets and liabilities measured at fair value on a recurring basis
Residential mortgage-backed securities	0	0
Collateralized mortgage obligations	0	0
FHLMC | Recurring | Level 2
Assets and liabilities measured at fair value on a recurring basis
Residential mortgage-backed securities	68,926	74,991
Collateralized mortgage obligations	186,190	238,781
FHLMC | Recurring | Level 3
Assets and liabilities measured at fair value on a recurring basis
Residential mortgage-backed securities	0	0
Collateralized mortgage obligations	0	0
Non-agency | Recurring
Assets and liabilities measured at fair value on a recurring basis
Residential mortgage-backed securities	5	6
Non-agency | Recurring | Level 1
Assets and liabilities measured at fair value on a recurring basis
Residential mortgage-backed securities	0	0
Non-agency | Recurring | Level 2
Assets and liabilities measured at fair value on a recurring basis
Residential mortgage-backed securities	5	6
Non-agency | Recurring | Level 3
Assets and liabilities measured at fair value on a recurring basis
Residential mortgage-backed securities	0	0
Interest rate lock commitments | Level 1
Assets and liabilities measured at fair value on a recurring basis
Derivative assets	0	0
Interest rate lock commitments | Level 2
Assets and liabilities measured at fair value on a recurring basis
Derivative assets	0	0
Interest rate lock commitments | Level 3
Assets and liabilities measured at fair value on a recurring basis
Derivative assets	664	559
Interest rate lock commitments | Recurring
Assets and liabilities measured at fair value on a recurring basis
Derivative assets	664	559
Interest rate lock commitments | Recurring | Level 1
Assets and liabilities measured at fair value on a recurring basis
Derivative assets	0	0
Interest rate lock commitments | Recurring | Level 2
Assets and liabilities measured at fair value on a recurring basis
Derivative assets	0	0
Interest rate lock commitments | Recurring | Level 3
Assets and liabilities measured at fair value on a recurring basis
Derivative assets	664	559
Forward commitments | Level 1
Assets and liabilities measured at fair value on a recurring basis
Derivative assets		0
Derivative liabilities	0
Forward commitments | Level 2
Assets and liabilities measured at fair value on a recurring basis
Derivative assets		128
Derivative liabilities	23
Forward commitments | Level 3
Assets and liabilities measured at fair value on a recurring basis
Derivative assets		0
Derivative liabilities	0
Forward commitments | Recurring
Assets and liabilities measured at fair value on a recurring basis
Derivative assets		128
Derivative liabilities	23
Forward commitments | Recurring | Level 1
Assets and liabilities measured at fair value on a recurring basis
Derivative assets		0
Derivative liabilities	0
Forward commitments | Recurring | Level 2
Assets and liabilities measured at fair value on a recurring basis
Derivative assets		128
Derivative liabilities	23
Forward commitments | Recurring | Level 3
Assets and liabilities measured at fair value on a recurring basis
Derivative assets		0
Derivative liabilities	0
Foreign exchange swaps | Level 1
Assets and liabilities measured at fair value on a recurring basis
Derivative assets	0
Derivative liabilities	0	0
Foreign exchange swaps | Level 2
Assets and liabilities measured at fair value on a recurring basis
Derivative assets	203
Derivative liabilities	10	23
Foreign exchange swaps | Level 3
Assets and liabilities measured at fair value on a recurring basis
Derivative assets	0
Derivative liabilities	0	0
Foreign exchange swaps | Recurring
Assets and liabilities measured at fair value on a recurring basis
Derivative assets	203
Derivative liabilities	10	23
Foreign exchange swaps | Recurring | Level 1
Assets and liabilities measured at fair value on a recurring basis
Derivative assets	0
Derivative liabilities	0	0
Foreign exchange swaps | Recurring | Level 2
Assets and liabilities measured at fair value on a recurring basis
Derivative assets	203
Derivative liabilities	10	23
Foreign exchange swaps | Recurring | Level 3
Assets and liabilities measured at fair value on a recurring basis
Derivative assets	0
Derivative liabilities	0	0
Interest rate swap agreements | Level 1
Assets and liabilities measured at fair value on a recurring basis
Derivative assets		0
Derivative liabilities		0
Interest rate swap agreements | Level 1 | Derivatives designated as hedging instruments
Assets and liabilities measured at fair value on a recurring basis
Derivative assets	0
Interest rate swap agreements | Level 1 | Derivatives not designated as hedging instruments
Assets and liabilities measured at fair value on a recurring basis
Derivative assets	0
Derivative liabilities	0
Interest rate swap agreements | Level 2
Assets and liabilities measured at fair value on a recurring basis
Derivative assets		26,642
Derivative liabilities		45,464
Interest rate swap agreements | Level 2 | Derivatives designated as hedging instruments
Assets and liabilities measured at fair value on a recurring basis
Derivative assets	4,603
Interest rate swap agreements | Level 2 | Derivatives not designated as hedging instruments
Assets and liabilities measured at fair value on a recurring basis
Derivative assets	57,249
Derivative liabilities	57,275
Interest rate swap agreements | Level 3
Assets and liabilities measured at fair value on a recurring basis
Derivative assets		0
Derivative liabilities		0
Interest rate swap agreements | Level 3 | Derivatives designated as hedging instruments
Assets and liabilities measured at fair value on a recurring basis
Derivative assets	0
Interest rate swap agreements | Level 3 | Derivatives not designated as hedging instruments
Assets and liabilities measured at fair value on a recurring basis
Derivative assets	0
Derivative liabilities	0
Interest rate swap agreements | Recurring | Derivatives designated as hedging instruments
Assets and liabilities measured at fair value on a recurring basis
Derivative assets	4,603
Interest rate swap agreements | Recurring | Derivatives not designated as hedging instruments
Assets and liabilities measured at fair value on a recurring basis
Derivative assets	57,249	26,642
Derivative liabilities	57,275	45,464
Interest rate swap agreements | Recurring | Level 1 | Derivatives designated as hedging instruments
Assets and liabilities measured at fair value on a recurring basis
Derivative assets	0
Interest rate swap agreements | Recurring | Level 1 | Derivatives not designated as hedging instruments
Assets and liabilities measured at fair value on a recurring basis
Derivative assets	0	0
Derivative liabilities	0	0
Interest rate swap agreements | Recurring | Level 2 | Derivatives designated as hedging instruments
Assets and liabilities measured at fair value on a recurring basis
Derivative assets	4,603
Interest rate swap agreements | Recurring | Level 2 | Derivatives not designated as hedging instruments
Assets and liabilities measured at fair value on a recurring basis
Derivative assets	57,249	26,642
Derivative liabilities	57,275	45,464
Interest rate swap agreements | Recurring | Level 3 | Derivatives designated as hedging instruments
Assets and liabilities measured at fair value on a recurring basis
Derivative assets	0
Interest rate swap agreements | Recurring | Level 3 | Derivatives not designated as hedging instruments
Assets and liabilities measured at fair value on a recurring basis
Derivative assets	0	0
Derivative liabilities	0	0
Risk participation agreements | Level 1
Assets and liabilities measured at fair value on a recurring basis
Derivative liabilities	0	0
Risk participation agreements | Level 2
Assets and liabilities measured at fair value on a recurring basis
Derivative liabilities	17	18
Risk participation agreements | Level 3
Assets and liabilities measured at fair value on a recurring basis
Derivative liabilities	0	0
Risk participation agreements | Recurring
Assets and liabilities measured at fair value on a recurring basis
Derivative liabilities	17	18
Risk participation agreements | Recurring | Level 1
Assets and liabilities measured at fair value on a recurring basis
Derivative liabilities	0	0
Risk participation agreements | Recurring | Level 2
Assets and liabilities measured at fair value on a recurring basis
Derivative liabilities	17	18
Risk participation agreements | Recurring | Level 3
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, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Reconciliation of all assets and liabilities measured at fair value on a recurring basis using significant unobservable inputs (Level 3)
Balance at the beginning of the period	$ 761	$ 1,520	$ 559	$ 1,684
Interest rate lock commitments:
Net activity	(97)	(457)	105	(621)
Balance at the end of the period	$ 664	$ 1,063	$ 664	$ 1,063

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, 2023	Dec. 31, 2022
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	204,619	174,893
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	1,754,812	1,996,262
Level 3
Fair value measurement for nonrecurring assets that had a fair market value below the carrying amount
Loans individually assessed	10,031,968	9,910,852
Total assets	10,043,224	9,921,324
Nonrecurring
Fair value measurement for nonrecurring assets that had a fair market value below the carrying amount
Mortgage servicing rights	198	95
Real estate owned, net	363	413
Total assets	14,028	15,924
Nonrecurring | Loans individually assessed
Fair value measurement for nonrecurring assets that had a fair market value below the carrying amount
Loans individually assessed	13,467	15,416
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	198	95
Real estate owned, net	363	413
Total assets	14,028	15,924
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	$ 13,467	$ 15,416

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, 2023 USD ($)	Dec. 31, 2022 USD ($)
Nonrecurring
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Mortgage servicing rights	$ 198,000	$ 95,000
Real estate owned, net	$ 363,000	413,000
Nonrecurring | Estimated cost to sell | Appraisal value
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Real estate owned, net, measurement input	0.150
Nonrecurring | Annual service cost | Discounted cash flow
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Mortgage servicing rights, measurement input	90
Nonrecurring | Prepayment rate | Discounted cash flow | Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Mortgage servicing rights, measurement input	0.066
Nonrecurring | Prepayment rate | Discounted cash flow | Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Mortgage servicing rights, measurement input	0.150
Nonrecurring | Prepayment rate | Discounted cash flow | Weighted average
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Mortgage servicing rights, measurement input	0.099
Nonrecurring | Expected life (months) | Discounted cash flow | Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Mortgage servicing rights, measurement input	53.1
Nonrecurring | Expected life (months) | Discounted cash flow | Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Mortgage servicing rights, measurement input	103.5
Nonrecurring | Expected life (months) | Discounted cash flow | Weighted average
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Mortgage servicing rights, measurement input	75.8
Nonrecurring | Option adjusted spread | Discounted cash flow
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Mortgage servicing rights, measurement input	0.0720
Nonrecurring | Forward yield curve | Discounted cash flow | Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Mortgage servicing rights, measurement input	0.0544
Nonrecurring | Forward yield curve | Discounted cash flow | Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Mortgage servicing rights, measurement input	0.0560
Recurring
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Loans held for sale	$ 10,592,000
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	$ 13,467,000	$ 15,416,000
Loans individually assessed | Nonrecurring | Estimated cost to sell | Appraisal value
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Loans individually assessed, measurement input	0.100

Derivative Financial Instrume_3

Derivative Financial Instruments - Narrative (Details) - Interest rate swap agreements - Derivatives designated as hedging instruments $ in Thousands	9 Months Ended
	Sep. 30, 2023 USD ($) derivative
Derivative [Line Items]
Number of derivatives | derivative	7
Derivative, notional amount | $	$ 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, 2023	Dec. 31, 2022
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	$ 175,000
Asset derivatives, fair value	4,603
Liability derivatives, notional amount	0
Liability derivatives, fair value	0
Derivatives not designated as hedging instruments
Derivative [Line Items]
Asset derivatives, notional amount	890,920	$ 675,750
Asset derivatives, fair value	62,719	27,329
Liability derivatives, notional amount	783,172	767,601
Liability derivatives, fair value	57,325	45,505
Derivatives not designated as hedging instruments | Interest rate swap agreements
Derivative [Line Items]
Asset derivatives, notional amount	673,255	651,114
Asset derivatives, fair value	57,249	26,642
Liability derivatives, notional amount	673,255	651,114
Liability derivatives, fair value	57,275	45,464
Derivatives not designated as hedging instruments | Foreign exchange swaps
Derivative [Line Items]
Asset derivatives, notional amount	7,393	0
Asset derivatives, fair value	203	0
Liability derivatives, notional amount	760	2,328
Liability derivatives, fair value	10	23
Derivatives not designated as hedging instruments | Interest rate lock commitments
Derivative [Line Items]
Asset derivatives, notional amount	35,272	19,727
Asset derivatives, fair value	664	559
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	0	4,909
Asset derivatives, fair value	0	128
Liability derivatives, notional amount	6,772	0
Liability derivatives, fair value	23	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	102,385	114,159
Liability derivatives, fair value	$ 17	$ 18

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, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Hedging derivatives:
Decrease in interest expense	$ 627	$ 0	$ 831	$ 0
Increase/(decrease) in other income
Non-hedging swap derivatives:
Increase/(decrease) in other income	203	93	(127)	207
(Decrease)/increase in mortgage banking income
Non-hedging swap derivatives:
Increase/(decrease) in other income	$ (221)	$ 809	$ (46)	$ 1,131

Derivative Financial Instrume_6

Derivative Financial Instruments - Schedule of Key Characteristics of Interest Rate Derivative Transactions (Details) - Derivatives designated as hedging instruments $ in Thousands	Sep. 30, 2023 USD ($)
Interest rate swap agreements
Derivative [Line Items]
Notional amount	$ 175,000
Estimated decrease to interest expense in the next twelve months	(2,933)
Issued May 11, 2023
Derivative [Line Items]
Notional amount	$ 25,000
Effective rate	3.52%
Estimated decrease to interest expense in the next twelve months	$ (540)
Remaining term (in months)	43 months
Issued May 12, 2023
Derivative [Line Items]
Notional amount	$ 25,000
Effective rate	3.54%
Estimated decrease to interest expense in the next twelve months	$ (528)
Remaining term (in months)	55 months
Issued May 19, 2023
Derivative [Line Items]
Notional amount	$ 25,000
Effective rate	3.84%
Estimated decrease to interest expense in the next twelve months	$ (454)
Remaining term (in months)	50 months
Issued May 31, 2023
Derivative [Line Items]
Notional amount	$ 25,000
Effective rate	4.08%
Estimated decrease to interest expense in the next twelve months	$ (400)
Remaining term (in months)	38 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	$ (348)
Remaining term (in months)	58 months
Issued July 31, 2023
Derivative [Line Items]
Notional amount	$ 25,000
Effective rate	4.36%
Estimated decrease to interest expense in the next twelve months	$ (330)
Remaining term (in months)	52 months
Issued August 9, 2023
Derivative [Line Items]
Notional amount	$ 25,000
Effective rate	4.32%
Estimated decrease to interest expense in the next twelve months	$ (333)
Remaining term (in months)	46 months

Changes in Accumulated Other _3

Changes in Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Changes in accumulated other comprehensive income by component
Beginning balance	$ 1,511,501	$ 1,494,539	$ 1,491,486	$ 1,583,571
Other comprehensive (loss)/income before reclassification adjustments	(27,890)	(48,387)	(30,855)	(153,124)
Amounts reclassified from accumulated other comprehensive income	(382)	(131)	4,490	(395)
Other comprehensive loss	(28,272)	(48,518)	(26,365)	(153,519)
Ending balance	1,498,431	1,459,786	1,498,431	1,459,786
Unrealized holding gains (losses), tax	9,140	14,705	9,603	45,555
Reclassification adjustment for gains included in net income, tax	0	0	(1,731)	0
Changes in fair value of interest rate swaps, tax	(533)	0	(1,041)	0
Reclassification adjustments for prior period service costs and net losses included in net income, tax	152	50	456	151
Total
Changes in accumulated other comprehensive income by component
Beginning balance	(169,251)	(142,630)	(171,158)	(37,629)
Other comprehensive loss	(28,272)	(48,518)	(26,365)	(153,519)
Ending balance	(197,523)	(191,148)	(197,523)	(191,148)
Unrealized  losses on securities  available-for-sale
Changes in accumulated other comprehensive income by component
Beginning balance	(163,272)	(117,056)	(164,206)	(12,317)
Other comprehensive (loss)/income before reclassification adjustments	(29,715)	(48,387)	(34,417)	(153,124)
Amounts reclassified from accumulated other comprehensive income	0	0	5,636	(2)
Other comprehensive loss	(29,715)	(48,387)	(28,781)	(153,126)
Ending balance	(192,987)	(165,443)	(192,987)	(165,443)
Change in  fair value  of interest  rate swaps
Changes in accumulated other comprehensive income by component
Beginning balance	1,737		0
Other comprehensive (loss)/income before reclassification adjustments	1,825		3,562
Amounts reclassified from accumulated other comprehensive income	0		0
Other comprehensive loss	1,825		3,562
Ending balance	3,562		3,562
Change in  defined benefit  pension plans
Changes in accumulated other comprehensive income by component
Beginning balance	(7,716)	(25,574)	(6,952)	(25,312)
Other comprehensive (loss)/income before reclassification adjustments	0	0	0	0
Amounts reclassified from accumulated other comprehensive income	(382)	(131)	(1,146)	(393)
Other comprehensive loss	(382)	(131)	(1,146)	(393)
Ending balance	$ (8,098)	$ (25,705)	$ (8,098)	$ (25,705)