Glacier Bancorp (GBCI) 10-Q 7 May 24 2024 Q1 Quarterly report Financial data

Cover

Cover - shares	3 Months Ended
	Mar. 31, 2024	Apr. 14, 2024
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Mar. 31, 2024
Document Transition Report	false
Entity File Number	000-18911
Entity Registrant Name	GLACIER BANCORP, INC.
Entity Incorporation, State or Country Code	MT
Entity Tax Identification Number	81-0519541
Entity Address, Address Line One	49 Commons Loop
Entity Address, City or Town	Kalispell,
Entity Address, State or Province	MT
Entity Address, Postal Zip Code	59901
City Area Code	(406)
Local Phone Number	756-4200
Title of 12(b) Security	Common Stock, $0.01 par value
Trading Symbol	GBCI
Security Exchange Name	NYSE
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		113,388,590
Entity Central Index Key	0000868671
Amendment Flag	false
Document Fiscal Year Focus	2024
Document Fiscal Period Focus	Q1
Current Fiscal Year End Date	--12-31

UNAUDITED CONDENSED CONSOLIDATE

UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF FINANCIAL CONDITION - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Assets
Cash on hand and in banks	$ 232,064	$ 246,525
Interest bearing cash deposits	556,596	1,107,817
Cash and cash equivalents	788,660	1,354,342
Debt securities, available-for-sale	4,629,073	4,785,719
Debt securities, held-to-maturity	3,451,583	3,502,411
Total debt securities	8,080,656	8,288,130
Loans held for sale, at fair value	27,035	15,691
Loans receivable	16,732,502	16,198,082
Allowance for credit losses	(198,779)	(192,757)
Loans receivable, net	16,533,723	16,005,325
Premises and equipment, net	443,273	421,791
Other real estate owned and foreclosed assets	891	1,503
Accrued interest receivable	106,063	94,526
Deferred tax asset	161,327	159,070
Core deposit intangible, net	46,046	31,870
Goodwill	1,023,762	985,393
Non-marketable equity securities	111,129	12,755
Bank-owned life insurance	186,625	171,101
Other assets	312,980	201,132
Total assets	27,822,170	27,742,629
Liabilities
Non-interest bearing deposits	6,055,069	6,022,980
Interest bearing deposits	14,372,454	13,906,187
Securities sold under agreements to repurchase	1,540,008	1,486,850
Federal Home Loan Bank advances	2,140,157	0
FRB Bank Term Funding	0	2,740,000
Other borrowed funds	88,814	81,695
Subordinated debentures	132,984	132,943
Accrued interest payable	32,584	125,907
Other liabilities	349,393	225,786
Total liabilities	24,711,463	24,722,348
Commitments and Contingent Liabilities	0	0
Stockholders’ Equity
Preferred shares, $0.01 par value per share, 1,000,000 shares authorized, none issued or outstanding	0	0
Common stock, $0.01 par value per share, 234,000,000 shares authorized at March 31, 2024 and December 31, 2023, respectively	1,134	1,109
Paid-in capital	2,443,584	2,350,104
Retained earnings - substantially restricted	1,038,294	1,043,181
Accumulated other comprehensive loss	(372,305)	(374,113)
Total stockholders’ equity	3,110,707	3,020,281
Total liabilities and stockholders’ equity	$ 27,822,170	$ 27,742,629
Number of common stock shares issued (in shares)	113,388,590	110,888,942
Number of common stock shares outstanding (in shares)	113,388,590	110,888,942

UNAUDITED CONDENSED CONSOLIDA_2

UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF FINANCIAL CONDITION (Parenthetical) - $ / shares	Mar. 31, 2024	Dec. 31, 2023
Statement of Financial Position [Abstract]
Preferred shares, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred shares, authorized (in shares)	1,000,000	1,000,000
Preferred shares, issued (in shares)	0	0
Preferred shares, outstanding (in shares)	0	0
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	234,000,000	234,000,000

UNAUDITED CONDENSED CONSOLIDA_3

UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Interest Income
Investment securities	$ 56,218	$ 43,642
Residential real estate loans	20,764	15,838
Commercial loans	181,472	155,682
Consumer and other loans	20,948	16,726
Total interest income	279,402	231,888
Interest Expense
Deposits	67,196	12,545
Securities sold under agreements to repurchase	12,598	4,606
Federal Home Loan Bank advances	4,249	23,605
FRB Bank Term Funding	27,097	3,032
Other borrowed funds	344	496
Subordinated debentures	1,438	1,412
Total interest expense	112,922	45,696
Net Interest Income	166,480	186,192
Provision for credit losses	8,249	5,470
Net interest income after provision for credit losses	158,231	180,722
Non-Interest Income
Service charges and other fees	18,563	17,771
Miscellaneous loan fees and charges	4,362	3,967
Gain on sale of loans	3,362	2,400
Gain (loss) on sale of securities	16	(114)
Other income	3,686	3,871
Total non-interest income	29,989	27,895
Non-Interest Expense
Compensation and employee benefits	85,789	81,477
Occupancy and equipment	11,883	11,665
Advertising and promotions	3,983	4,235
Data processing	9,159	8,109
Other real estate owned and foreclosed assets	25	12
Regulatory assessments and insurance	7,761	4,903
Core deposit intangibles amortization	2,760	2,449
Other expenses	30,483	22,132
Total non-interest expense	151,843	134,982
Income Before Income Taxes	36,377	73,635
Federal and state income tax expense	3,750	12,424
Net Income	$ 32,627	$ 61,211
Basic earnings per share (in dollars per share)	$ 0.29	$ 0.55
Diluted earnings per share (in dollars per share)	0.29	0.55
Dividends declared per share (in dollars per share)	$ 0.33	$ 0.33
Average outstanding shares - basic (in shares)	112,492,142	110,824,648
Average outstanding shares - diluted (in shares)	112,554,402	110,881,708

UNAUDITED CONDENSED CONSOLIDA_4

UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Statement of Comprehensive Income [Abstract]
Net Income	$ 32,627	$ 61,211
Available-For-Sale and Transferred Securities:
Unrealized gains on available-for-sale securities	2,037	77,466
Reclassification adjustment for (gains) losses included in net income	(29)	31
Reclassification adjustment for securities transferred from available-for-sale to held-to-maturity	1,008	1,881
Tax effect	(757)	(20,059)
Net of tax amount	2,259	59,319
Cash Flow Hedge:
Unrealized gains (losses) on derivatives used for cash flow hedges	657	(36)
Reclassification adjustment for gains included in net income	(1,260)	(974)
Tax effect	152	255
Net of tax amount	(451)	(755)
Total other comprehensive income, net of tax	1,808	58,564
Total Comprehensive Income	$ 34,435	$ 119,775

UNAUDITED CONDENSED CONSOLIDA_5

UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS’ EQUITY - USD ($) $ in Thousands	Total	Common Stock	Paid-in Capital	Retained Earnings- Substantially Restricted	Accumulated Other Compre- hensive (Loss) Income
Balance, beginning (in shares) at Dec. 31, 2022		110,777,780
Balance, beginning at Dec. 31, 2022	$ 2,843,305	$ 1,108	$ 2,344,005	$ 966,984	$ (468,792)
Increase (Decrease) in Stockholders' Equity
Net income	61,211			61,211
Other comprehensive income	58,564				58,564
Cash dividends declared ($0.33 per share)	(36,686)			(36,686)
Stock issuances under stock incentive plans (in shares)		90,933
Stock issuances under stock incentive plans		$ 1	(1)
Stock-based compensation and related taxes	510		510
Balance, ending (in shares) at Mar. 31, 2023		110,868,713
Balance, ending at Mar. 31, 2023	$ 2,926,904	$ 1,109	2,344,514	991,509	(410,228)
Balance, beginning (in shares) at Dec. 31, 2023	110,888,942	110,888,942
Balance, beginning at Dec. 31, 2023	$ 3,020,281	$ 1,109	2,350,104	1,043,181	(374,113)
Increase (Decrease) in Stockholders' Equity
Net income	32,627			32,627
Other comprehensive income	1,808				1,808
Cash dividends declared ($0.33 per share)	(37,514)			(37,514)
Stock issued in connection with acquisitions (in shares)		2,389,684
Stock issued in connection with acquisitions	92,385	$ 24	92,361
Stock issuances under stock incentive plans (in shares)		109,964
Stock issuances under stock incentive plans		$ 1	(1)
Stock-based compensation and related taxes	$ 1,120		1,120
Balance, ending (in shares) at Mar. 31, 2024	113,388,590	113,388,590
Balance, ending at Mar. 31, 2024	$ 3,110,707	$ 1,134	$ 2,443,584	$ 1,038,294	$ (372,305)

UNAUDITED CONDENSED CONSOLIDA_6

UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS’ EQUITY (Parenthetical) - $ / shares	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Statement of Stockholders' Equity [Abstract]
Cash dividends declared (in dollars per share)	$ 0.33	$ 0.33

UNAUDITED CONDENSED CONSOLIDA_7

UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Operating Activities
Net income	$ 32,627	$ 61,211
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for credit losses	8,249	5,470
Net amortization of debt securities	3,210	3,098
Net amortization of purchase accounting adjustments and deferred loan fees and costs	436	(554)
Origination of loans held for sale	(111,561)	(79,714)
Proceeds from loans held for sale	104,592	115,825
Gain on sale of loans	(3,362)	(2,400)
(Gain) loss on sale of securities	(16)	114
Bank-owned life insurance income, net	(1,076)	(961)
Stock-based compensation, net of tax benefits	1,615	1,740
Depreciation and amortization of premises and equipment	7,092	6,812
Gain on sale and write-downs of other real estate owned, net	(91)	(1)
Amortization of core deposit intangibles	2,760	2,449
Amortization of investments in variable interest entities	7,425	5,633
Net increase in accrued interest receivable	(8,014)	(7,105)
Net decrease (increase) in other assets	2,356	(4,118)
Net (decrease) increase in accrued interest payable	(93,924)	4,637
Net decrease in other liabilities	(9,047)	(13,957)
Net cash (used in) provided by operating activities	(56,729)	98,179
Investing Activities
Sales of available-for-sale debt securities	160,558	29,972
Maturities, prepayments and calls of available-for-sale debt securities	166,314	153,048
Maturities, prepayments and calls of held-to-maturity debt securities	49,821	50,918
Principal collected on loans	755,069	750,400
Loan originations	(843,257)	(1,059,597)
Net additions to premises and equipment	(4,290)	(8,161)
Proceeds from sale of other real estate owned	720	10
Proceeds from redemption of non-marketable equity securities	12,383	559,201
Purchases of non-marketable equity securities	(106,892)	(500,600)
Proceeds from bank-owned life insurance	193	1,787
Investments in variable interest entities	(12,154)	(6,844)
Net cash received from acquisitions	30,903	0
Net cash provided by (used in) investing activities	209,368	(29,866)
Financing Activities
Net decrease in deposits	(118,419)	(458,062)
Net increase in securities sold under agreements to repurchase	53,158	245,407
Net increase (decrease) in short-term Federal Home Loan Bank advances	281,657	(1,465,000)
Proceeds from short-term FRB Bank Term Funding advances	0	2,740,000
Repayments of short-term FRB Bank Term Funding	(2,740,000)	0
Proceeds from long-term Federal Home Loan Bank advances	1,800,000	0
Net increase (decrease) in other borrowed funds	6,967	(1,108)
Cash dividends paid	(314)	(292)
Tax withholding payments for stock-based compensation	(1,370)	(1,719)
Net cash (used in) provided by financing activities	(718,321)	1,059,226
Net (decrease) increase in cash, cash equivalents and restricted cash	(565,682)	1,127,539
Cash, cash equivalents and restricted cash at beginning of period	1,354,342	401,995
Cash, cash equivalents and restricted cash at end of period	788,660	1,529,534
Supplemental Disclosure of Cash Flow Information
Cash paid during the period for interest	206,846	41,059
Cash paid during the period for income taxes	5	0
Supplemental Disclosure of Non-Cash Investing and Financing Activities
Transfer of loans to other real estate owned	16	8
Right-of-use assets obtained in exchange for new lease liabilities	152	276
Equity investments obtained in exchange for delayed equity contributions	7,148	17,113
Dividends declared during the period but not paid	37,514	36,686
Acquisitions
Fair value of common stock shares issued	92,385	0
Cash consideration	771	0
Fair value of assets acquired	777,659	0
Liabilities assumed	$ 684,503	$ 0

Nature of Operations and Summar

Nature of Operations and Summary of Significant Accounting Policies	3 Months Ended
	Mar. 31, 2024
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Nature of Operations and Summary of Significant Accounting Policies	Nature of Operations and Summary of Significant Accounting Policies General Glacier Bancorp, Inc. (“Company”) is a Montana corporation headquartered in Kalispell, Montana. The Company provides a full range of banking services to individuals and businesses in Montana, Idaho, Utah, Washington, Wyoming, Colorado, Arizona and Nevada through its wholly-owned bank subsidiary, Glacier Bank (“Bank”). The Company offers a wide range of banking products and services, including: 1) retail banking; 2) business banking; 3) real estate, commercial, agriculture and consumer loans; and 4) mortgage origination and loan servicing. The Company serves individuals, small to medium-sized businesses, community organizations and public entities. In the opinion of management, the accompanying unaudited condensed consolidated financial statements reflect all adjustments necessary for a fair presentation of the results for the interim periods. All such adjustments are of a normal recurring nature. These interim financial statements do not include all of the information and footnotes required by accounting principles generally accepted in the United States of America (“GAAP”) for complete financial statements and they should be read in conjunction with the consolidated financial statements and notes thereto contained in the Company’s Annual Report on Form 10-K for the year ended December 31, 2023. Operating results for the three months ended March 31, 2024 are not necessarily indicative of the results anticipated for the year ending December 31, 2024. The condensed consolidated statement of financial condition of the Company as of December 31, 2023 has been derived from the audited consolidated statements of the Company as of that date. The Company is a defendant in legal proceedings arising in the normal course of business. In the opinion of management, the disposition of pending litigation will not have a material affect on the Company’s consolidated financial position, results of operations or liquidity. Material estimates that are particularly susceptible to significant change include: 1) the determination of the allowance for credit losses (“ACL” or “allowance”) on loans; 2) the valuation of debt securities; 3) the valuation of real estate acquired in connection with foreclosures or in satisfaction of loans; and 4) the evaluation of goodwill impairment. For the determination of the ACL on loans and real estate valuation estimates, management obtains independent appraisals (new or updated) for significant items. Estimates relating to the investment valuations are obtained from independent third parties. Estimates relating to the evaluation of goodwill for impairment are determined based on internal calculations using independent party inputs. Principles of Consolidation The consolidated financial statements of the Company include the parent holding company and the Bank, which consists of seventeen bank divisions and a corporate division. The corporate division includes the Bank’s investment portfolio, wholesale borrowings and other centralized functions. The Bank divisions operate under separate names, management teams and advisory directors. The Company considers the Bank to be its sole operating segment as the Bank 1) engages in similar bank business activity from which it earns revenues and incurs expenses; 2) the operating results of the Bank are regularly reviewed by the Chief Executive Officer (“CEO”) (i.e., the chief operating decision maker) who makes decisions about resources to be allocated to the Bank; and 3) financial information is available for the Bank. All significant inter-company transactions have been eliminated in consolidation. The Bank has subsidiary interests in variable interest entities (“VIE”) for which the Bank has both the power to direct the VIE’s significant activities and the obligation to absorb losses or right to receive benefits of the VIE that could potentially be significant to the VIE. These subsidiary interests are included in the Company’s consolidated financial statements. The Bank also has subsidiary interests in VIEs for which the Bank does not have a controlling financial interest and is not the primary beneficiary. These subsidiary interests are not included in the Company’s consolidated financial statements. For additional information on the Bank’s interest in VIEs, see Note 7. The parent holding company owns non-bank subsidiaries that have issued trust preferred securities. The trust subsidiaries are not included in the Company’s consolidated financial statements. The Company's investments in the trust subsidiaries are included in other assets on the Company's statements of financial condition. On January 31, 2024, the Company completed the acquisition of Community Financial Group, Inc. and its wholly-owned subsidiary, Wheatland Bank (“Wheatland”), a community bank based in Spokane, Washington. The business combination was accounted for using the acquisition method, with the results of operations included in the Company’s consolidated financial statements as of the acquisition date. For additional information relating to mergers and acquisitions, see Note 14. Cash, Cash Equivalents and Restricted Cash Cash and cash equivalents include cash on hand, cash held as demand deposits at various banks and the Federal Reserve Bank (“FRB”), interest bearing deposits, federal funds sold, and liquid investments with original maturities of three months or less. Interest bearing deposits are maintained at other financial institutions as collateral for certain derivative contracts and are considered restricted cash. The Company had $19,250,000 and $17,440,000 of restricted cash held as collateral for derivative contracts as of March 31, 2024 and December 31, 2023, respectively. The Bank is required to maintain an average reserve balance with either the FRB or in the form of cash on hand at a reserve rate determined by the FRB. Effective March 26, 2020, the FRB Board reduced the reserve requirement ratio to zero percent. The required reserve balance at March 31, 2024 was $0. Debt Securities Debt securities for which the Company has the positive intent and ability to hold to maturity are classified as held-to-maturity and are carried at amortized cost. Debt securities held primarily for the purpose of selling in the near term are classified as trading securities and are reported at fair value, with unrealized gains and losses included in income. Debt securities not classified as held-to-maturity or trading are classified as available-for-sale and are reported at fair value with unrealized gains and losses, net of income taxes, as a separate component of other comprehensive income (“OCI”). Premiums and discounts on debt securities are amortized or accreted into income using a method that approximates the interest method. The objective of the interest method is to calculate periodic interest income at a constant effective yield. The Company does not have any debt securities classified as trading securities. When the Company acquires another entity, it records the debt securities at fair value. The Company reviews and analyzes the various risks that may be present within the investment portfolio on an ongoing basis, including market risk, credit risk and liquidity risk. Market risk is the risk to an entity’s financial condition resulting from adverse changes in the value of its holdings arising from movements in interest rates, foreign exchange rates, equity prices or commodity prices. The Company assesses the market risk of individual debt securities as well as the investment portfolio as a whole. Credit risk, broadly defined, is the risk that an issuer or counterparty will fail to perform on an obligation. The credit rating of a security is considered the primary credit quality indicator for debt securities. Liquidity risk refers to the risk that a security will not have an active and efficient market in which the security can be sold. A debt security is investment grade if the issuer has adequate capacity to meet its commitment over the expected life of the investment, i.e., the risk of default is low and full and timely repayment of interest and principal is expected. To determine investment grade status for debt securities, the Company conducts due diligence of the creditworthiness of the issuer or counterparty prior to acquisition and ongoing thereafter consistent with the risk characteristics of the security and the overall risk of the investment portfolio. Credit quality due diligence takes into account the extent to which a security is guaranteed by the U.S. government and other agencies of the U.S. government. The depth of the due diligence is based on the complexity of the structure, the size of the security, and takes into account material positions and specific groups of securities or stratifications for analysis and review of similar risk positions. The due diligence includes consideration of payment performance, collateral adequacy, internal analyses, third party research and analytics, external credit ratings and default statistics. The Company has acquired debt securities through acquisitions and if the securities have more than insignificant credit deterioration since origination, they are designated as purchased credit-deteriorated (“PCD”) securities. An ACL is determined using the same methodology as with other debt securities. The sum of a PCD security’s fair value and associated ACL becomes its initial amortized cost basis. The difference between the initial amortized cost basis and the par value of the debt security is a noncredit discount or premium, which is amortized into interest income over the life of the security. Subsequent changes to the ACL are recorded through provision for credit losses. For additional information relating to debt securities, see Note 2. Allowance for Credit Losses - Available-for-Sale Debt Securities For available-for-sale debt securities in an unrealized loss position, the Company first assesses whether it intends to sell, or it is more-likely-than-not that it will be required to sell the security before recovery of its amortized cost basis. If either of the criteria regarding intent or requirement to sell is met, the security’s amortized cost basis is written down to fair value through other expense. For the available-for-sale securities that do not meet the aforementioned criteria, the Company evaluates whether the decline in fair value has resulted from credit losses or other factors. In such assessment, the Company considers the extent to which fair value is less than amortized cost, if there are any changes to the investment grade of the security by a rating agency, and if there are any adverse conditions that impact the security. If this assessment indicates a credit loss exists, the present value of the cash flows expected to be collected from the security is compared to the amortized cost basis of the security. If the present value of the cash flows expected to be collected is less than the amortized cost basis, a potential credit loss exists and an ACL is recorded for the credit loss, limited by the amount that the fair value is less than the amortized cost. Any estimated credit losses that have not been recorded through an ACL are recognized in OCI. The Company has elected to exclude accrued interest from the estimate of credit losses for available-for-sale debt securities. As part of its non-accrual policy, the Company charges-off uncollectable interest at the time it is determined to be uncollectable. Allowance for Credit Losses - Held-to-Maturity Debt Securities For estimating the allowance for held-to-maturity (“HTM”) debt securities that share similar risk characteristics with other securities, such securities are pooled based on major security type. For pools of such securities with similar risk characteristics, the historical lifetime probability of default and severity of loss in the event of default is derived or obtained from external sources and adjusted for the expected effects of reasonable and supportable forecasts over the expected lives of the securities on those historical credit losses. Expected credit losses on securities in the held-to-maturity portfolio that do not share similar risk characteristics with any of the pools of debt securities are individually measured based on net realizable value, or the difference between the discounted value of the expected future cash flows, based on the original effective interest rate, and the recorded amortized cost basis of the securities. The Company has elected to exclude accrued interest from the estimate of credit losses for held-to-maturity debt securities. As part of its non-accrual policy, the Company charges off uncollectable interest at the time it is determined to be uncollectable. Loans Held for Sale Loans held for sale generally consist of long-term, fixed rate, conforming, single-family residential real estate loans intended to be sold on the secondary market. Loans held for sale are recorded at fair value and may or may not be sold with servicing rights released. Changes in fair value are recognized in non-interest income. Fair value elections are made at the time of origination based on the Company’s fair value election policy. Loans Receivable The Company’s loan segments or classes are based on the purpose of the loan and consist of residential real estate, commercial real estate, other commercial, home equity, and other consumer loans. Loans that are intended at origination to be held-to-maturity are reported at the unpaid principal balance less net charge-offs and adjusted for deferred fees and costs on originated loans and unamortized premiums or discounts on acquired loans. Interest income is accrued on the unpaid principal balance. Fees and costs on originated loans and premiums or discounts on acquired loans are deferred and subsequently amortized or accreted as a yield adjustment over the expected life of the loan utilizing the interest or straight-line methods. The interest method is utilized for loans with scheduled payment terms and the objective is to calculate periodic interest income at a constant effective yield. The straight-line method is utilized for revolving lines of credit or loans with no scheduled payment terms. When a loan is paid off prior to maturity, the remaining unamortized fees and costs on originated loans and unamortized premiums or discounts on acquired loans are immediately recognized as interest income. Loans that are 30 days or more past due based on payments received and applied to the loan are considered delinquent. Loans are designated non-accrual and the accrual of interest is discontinued when the collection of the contractual principal or interest is unlikely. A loan is typically placed on non-accrual when principal or interest is due and has remained unpaid for 90 days or more. When a loan is placed on non-accrual status, interest previously accrued but not collected is reversed against current period interest income. Subsequent payments on non-accrual loans are applied to the outstanding principal balance if doubt remains as to the ultimate collectability of the loan. Interest accruals are not resumed on partially charged-off impaired loans. For other loans on non-accrual, interest accruals are resumed on such loans only when they are brought fully current with respect to interest and principal and when, in the judgment of management, the loans are estimated to be fully collectible as to both principal and interest. The Company has acquired loans through acquisitions, some of which have experienced more than insignificant credit deterioration since origination. The Company considers all acquired non-accrual loans to be PCD loans. In addition, the Company considers loans accruing 90 days or more past due or substandard loans to be PCD loans. An ACL is determined using the same methodology as other loans held for investment. The ACL determined on a collective basis is allocated to individual loans. The sum of a loan’s fair value and ACL becomes the initial amortized cost basis. The difference between the initial amortized cost basis and the par value of the loan is a noncredit discount or premium, which is amortized into interest income over the life of the loan. Subsequent changes to the ACL are recorded through provision for credit losses. For additional information relating to loans, see Note 3. Allowance for Credit Losses - Loans Receivable The ACL for loans receivable represents management’s estimate of credit losses over the expected contractual life of the loan portfolio. The estimate is determined based on the amortized cost of the loan portfolio including the loan balance adjusted for charge-offs, recoveries, deferred fees and costs, and loan discount and premiums. Recoveries are included only to the extent that such amounts were previously charged-off. The Company has elected to exclude accrued interest from the estimate of credit losses for loans. Determining the adequacy of the allowance is complex and requires a high degree of judgment by management about the effect of matters that are inherently uncertain. Subsequent evaluations of the then-existing loan portfolio, in light of the factors then prevailing, may result in significant changes in the allowance in those future periods. The allowance is increased for estimated credit losses which are recorded as expense. The portion of loans and overdraft balances determined by management to be uncollectable are charged-off as a reduction to the allowance and recoveries of amounts previously charged-off increase the allowance. The Company’s charge-off policy is consistent with bank regulatory standards. Consumer loans generally are charged-off when the loan becomes over 120 days delinquent. Real estate acquired as a result of foreclosure or by deed-in-lieu of foreclosure is classified as other real estate owned (“OREO”) until such time as it is sold. The expected credit loss estimate process involves procedures to consider the unique characteristics of each of the Company’s loan portfolio segments, which consist of residential real estate, commercial real estate, other commercial, home equity, and other consumer loans. When computing the allowance levels, credit loss assumptions are estimated using a model that categorizes loan pools based on loss history, credit and risk characteristics, including current conditions and reasonable and supportable forecasts about the future. The Company has determined a four consecutive quarter forecasting period is a reasonable and supportable period. Expected credit loss for periods beyond reasonable and supportable forecast periods are determined based on a reversion method which reverts back to historical loss estimates over a four consecutive quarter period on a straight-line basis. Credit quality is assessed and monitored by evaluating various attributes and the results of those evaluations are utilized in underwriting new loans and the process for estimating the expected credit losses. The following paragraphs describe the risk characteristics relevant to each portfolio segment. Residential Real Estate. Residential real estate loans are secured by owner-occupied 1-4 family residences. Repayment of these loans is primarily dependent on the personal income and credit rating of the borrowers. Credit risk in these loans is impacted by economic conditions within the Company’s market areas that affect the value of the residential property securing the loans and affect the borrowers' personal incomes. Mitigating risk factors for this loan segment include a large number of borrowers, geographic dispersion of market areas and the loans are originated for relatively smaller amounts. Commercial Real Estate . Commercial real estate loans typically involve larger principal amounts, and repayment of these loans is generally dependent on the successful operation of the property securing the loan and/or the business conducted on the property securing the loan. Credit risk in these loans is impacted by the creditworthiness of a borrower, valuation of the property securing the loan and conditions within the local economies in the Company’s diverse geographic market areas. Commercial . Commercial loans consist of loans to commercial customers for use in financing working capital needs, equipment purchases and business expansions. The loans in this category are repaid primarily from the cash flow of a borrower’s principal business operation. Credit risk in these loans is driven by creditworthiness of a borrower and the economic conditions that impact the cash flow stability from business operations across the Company’s diverse geographic market areas. Home Equity . Home equity loans consist of junior lien mortgages and first and junior lien lines of credit (revolving open-end and amortizing closed-end) secured by owner-occupied 1-4 family residences. Repayment of these loans is primarily dependent on the personal income and credit rating of the borrowers. Credit risk in these loans is impacted by economic conditions within the Company’s market areas that affect the value of the residential property securing the loans and affect the borrowers' personal incomes. Mitigating risk factors for this loan segment are a large number of borrowers, geographic dispersion of market areas and the loans are originated for terms that range from 10 to 15 years. Other Consumer . The other consumer loan portfolio consists of various short-term loans such as automobile loans and loans for other personal purposes. Repayment of these loans is primarily dependent on the personal income of the borrowers. Credit risk is driven by consumer economic factors (such as unemployment and general economic conditions in the Company’s diverse geographic market areas) and the creditworthiness of a borrower. The allowance is impacted by loan volumes, delinquency status, credit ratings, historical loss experiences, estimated prepayment speeds, weighted average lives and other conditions influencing loss expectations, such as reasonable and supportable forecasts of economic conditions. The methodology for estimating the amount of expected credit losses reported in the allowance has two basic components: 1) individual loans that do not share similar risk characteristics with other loans and the measurement of expected credit losses for such individual loans; and 2) the expected credit losses for pools of loans that share similar risk characteristics. Loans that do not Share Similar Risk Characteristics with Other Loans. For a loan that does not share similar risk characteristics with other loans, expected credit loss is measured based on the net realizable value, that is, the difference between the discounted value of the expected future cash flows, based on the original effective interest rate, and the amortized cost basis of the loan. For these loans, the expected credit loss is equal to the amount by which the net realizable value of the loan is less than the amortized cost basis of the loan (which is net of previous charge-offs and deferred loan fees and costs), except when the loan is collateral-dependent, that is, when foreclosure is probable or the borrower is experiencing financial difficulty and repayment is expected to be provided substantially through the operation or sale of the collateral. In these cases, expected credit loss is measured as the difference between the amortized cost basis of the loan and the fair value of the collateral. The fair value of the collateral is adjusted for the estimated cost to sell if repayment or satisfaction of a loan is dependent on the sale (rather than only on the operation) of the collateral. The Company has determined that non-accrual loans do not share similar risk characteristics with other loans and these loans are individually evaluated for estimated allowance for credit losses. The Company, through its credit monitoring process, may also identify other loans that do not share similar risk characteristics and individually evaluate such loans. The starting point for determining the fair value of collateral is to obtain external appraisals or evaluations (new or updated). The valuation techniques used in preparing appraisals or evaluations (new or updated) include the cost approach, income approach, sales comparison approach, or a combination of the preceding valuation techniques. The Company’s credit department reviews appraisals, giving consideration to the highest and best use of the collateral. The appraisals or evaluations (new or updated) are reviewed at least quarterly and more frequently based on current market conditions, including deterioration in a borrower’s financial condition and when property values may be subject to significant volatility. Adjustments may be made to the fair value of the collateral after review and acceptance of the collateral appraisal or evaluation (new or updated). Loans that Share Similar Risk Characteristics with other Loans. For estimating the allowance for loans that share similar risk characteristics with other loans, such loans are segregated into loan segments. Loans are designated into loan segments based on loans pooled by product types and similar risk characteristics or areas of risk concentration. In determining the ACL, the Company derives an estimated credit loss assumption from a model that categorizes loan pools based on loan type which is further segregated by the credit quality indicators. This model calculates an expected loss percentage for each loan segment by considering the non-discounted simple annual average historical loss rate of each loan segment (calculated through an “open pool” method), multiplying the loss rate by the amortized loan balance and incorporating that segment’s internally generated prepayment speed assumption and contractually scheduled remaining principal pay downs on a loan level basis. The annual historical loss rates are adjusted over a reasonable economic forecast period by a multiplier that is calculated based upon current national economic forecasts as a proportion of each segment’s historical average loss levels. The Company will then revert from the economic forecast period back to the historical average loss rate in a straight-line basis. After the reversion period, the loans will be assumed to experience their historical loss rate for the remainder of their contractual lives. The model applies the expected loss rate over the projected cash flows at the individual loan level and then aggregates the losses by loan segment in determining their quantitative allowance. The Company will also include qualitative adjustments to adjust the ACL on loan segments to the extent the current or future market conditions are believed to vary substantially from historical conditions in regards to: • lending policies and procedures; • international, national, regional and local economic business conditions, developments, or environmental conditions that affect the collectability of the portfolio, including the condition of various markets; • the nature and volume of the loan portfolio including the terms of the loans; • the experience, ability, and depth of the lending management and other relevant staff; • the volume and severity of past due and adversely classified or graded loans and the volume of non-accrual loans; • the quality of our loan review system; • the value of underlying collateral for collateralized loans; • the existence and effect of any concentrations of credit, and changes in the level of concentrations; and • the effect of external factors such as competition and legal and regulatory requirements on the level of estimated credit losses in the existing portfolio. The Company regularly reviews loans in the portfolio to assess credit quality indicators and to determine the appropriate loan classification and grading in accordance with applicable bank regulations. The primary credit quality indicator for residential, home equity and other consumer loans is the days past due status, which consists of the following categories: 1) performing loans; 2) 30 to 89 days past due loans; and 3) non-accrual and 90 days or more past due loans. The primary credit quality indicator for commercial real estate and commercial loans is the Company’s internal risk rating system, which includes the following categories: 1) pass loans; 2) special mention loans; 3) substandard loans; and 4) doubtful or loss loans. Such credit quality indicators are regularly monitored and incorporated into the Company’s allowance estimate. The following paragraphs further define the internal risk ratings for commercial real estate and commercial loans. Pass Loans. These ratings represent loans that are of acceptable, good or excellent quality with very limited to no risk. Loans that do not have one of the following ratings are considered pass loans. Special Mention Loans. These ratings represent loans that are designated as special mention per the regulatory definition. Special mention loans are currently protected but are potentially weak. The credit risk may be relatively minor yet constitute an undue and unwarranted risk in light of the circumstances surrounding a specific loan. The rating may be used to identify credit with potential weaknesses that if not corrected may weaken the loan to the point of inadequately protecting the Bank’s credit position. Examples include a lack of supervision, inadequate loan agreement, condition, or control of collateral, incomplete, or improper documentation, deviations from lending policy, and adverse trends in operations or economic conditions. Substandard Loans. This rating represents loans that are inadequately protected by the current sound worth and paying capacity of the obligor or of the collateral pledged. A loan so classified must have a well-defined weakness that jeopardizes the liquidation of the debt. These loans are characterized by the distinct possibility that the Bank will sustain some loss if the deficiencies are not corrected. Loss potential, while existing in the aggregated amount of substandard loans, does not have to exist in an individual loan classified substandard. Doubtful/Loss Loans. A loan classified as doubtful has the characteristics that make collection in full, on the basis of currently existing facts, conditions, and values, highly improbable. The possibility of loss is extremely high, but because of pending factors, which may work to the advantage and strengthening of the loan, its classification as loss is deferred until its more exact status may be determined. Pending factors include proposed merger, acquisition, or liquidation procedures, capital injection, perfecting liens on additional collateral and refinancing plans. Loans are classified as loss when they are deemed to be not collectible and of such little value that continuance as an active asset of the Bank is not warranted. Loans classified as loss must be charged-off. Assignment of this classification does not mean that an asset has absolutely no recovery or salvage value, but that it is not practical or desirable to defer writing off a basically worthless asset, even though partial recovery may be attained in the future. Modifications On January 1, 2023, the Company adopted FASB ASU 2022-02, Financial Instruments - Credit Losses, Troubled Debt Restructurings and Vintage Disclosures, which eliminated the accounting guidance for troubled debt restructurings (“TDRs”) by creditors in Accounting Standard Codification (“ASC”) Subtopic 310-40, and enhanced the disclosure requirements for certain loan refinancing and restructures by creditors when a borrower is experiencing financial difficulty. The company identifies modifications to borrowers experiencing financial difficulty (“MBFD”) as a loan that has been modified for the borrower that is experiencing financial difficulties. The Company considers some of the indicators that a borrower is experiencing financial difficulty to be: currently in payment default on any of their debt, declaring bankruptcy, going concern, borrower’s securities have been delisted, and other indicators of inability to meet obligations. This list does not include all potential indicators of a borrower’s financial difficulties. The allowance for credit losses on a loans that are considered MBFD’s are measured using the same method as all other loans held for investment. Prior to the adoption of this guidance, restructured loans were considered to be a TDR if the creditor, for economic or legal reasons related to the debtor’s financial difficulties, grants a conc

Debt Securities

Debt Securities	3 Months Ended
	Mar. 31, 2024
Investments, Debt and Equity Securities [Abstract]
Debt Securities	Debt Securities The following tables present the amortized cost, the gross unrealized gains and losses and the fair value of the Company’s debt securities: March 31, 2024 (Dollars in thousands) Amortized Gross Gross Fair Available-for-sale U.S. government and federal agency $ 484,765 9 (29,957) 454,817 U.S. government sponsored enterprises 329,392 — (22,766) 306,626 State and local governments 101,090 74 (3,782) 97,382 Corporate bonds 14,881 — (675) 14,206 Residential mortgage-backed securities 3,028,348 3 (350,700) 2,677,651 Commercial mortgage-backed securities 1,166,124 290 (88,023) 1,078,391 Total available-for-sale $ 5,124,600 376 (495,903) 4,629,073 Held-to-maturity U.S. government and federal agency 854,791 — (71,911) 782,880 State and local governments 1,641,551 1,344 (205,613) 1,437,282 Residential mortgage-backed securities 955,241 — (84,209) 871,032 Total held-to-maturity 3,451,583 1,344 (361,733) 3,091,194 Total debt securities $ 8,576,183 1,720 (857,636) 7,720,267 December 31, 2023 (Dollars in thousands) Amortized Gross Gross Fair Available-for-sale U.S. government and federal agency $ 485,005 11 (29,669) 455,347 U.S. government sponsored enterprises 321,993 — (22,774) 299,219 State and local governments 101,903 302 (3,273) 98,932 Corporate bonds 27,007 2 (756) 26,253 Residential mortgage-backed securities 3,166,589 7 (355,333) 2,811,263 Commercial mortgage-backed securities 1,180,756 519 (86,570) 1,094,705 Total available-for-sale $ 5,283,253 841 (498,375) 4,785,719 Held-to-maturity U.S. government and federal agency 853,273 — (65,472) 787,801 State and local governments 1,650,000 2,843 (181,192) 1,471,651 Residential mortgage-backed securities 999,138 — (78,396) 920,742 Total held-to-maturity 3,502,411 2,843 (325,060) 3,180,194 Total debt securities $ 8,785,664 3,684 (823,435) 7,965,913 Maturity Analysis The following table presents the amortized cost and fair value of available-for-sale and held-to-maturity debt securities by contractual maturity at March 31, 2024. Actual maturities may differ from expected or contractual maturities since some issuers have the right to prepay obligations with or without prepayment penalties. March 31, 2024 Available-for-Sale Held-to-Maturity (Dollars in thousands) Amortized Cost Fair Value Amortized Cost Fair Value Due within one year $ 11,544 11,527 5,212 5,194 Due after one year through five years 846,883 793,437 934,210 860,793 Due after five years through ten years 33,140 32,114 181,452 173,245 Due after ten years 38,561 35,953 1,375,468 1,180,930 930,128 873,031 2,496,342 2,220,162 Mortgage-backed securities 1 4,194,472 3,756,042 955,241 871,032 Total $ 5,124,600 4,629,073 3,451,583 3,091,194 ______________________________ 1 Mortgage-backed securities, which have prepayment provisions, are not assigned to maturity categories due to fluctuations in their prepayment speeds. Sales and Calls of Debt Securities Proceeds from sales and calls of debt securities and the associated gains and losses that have been included in earnings are listed below: Three Months ended (Dollars in thousands) March 31, March 31, Available-for-sale Proceeds from sales and calls of debt securities $ 173,268 31,279 Gross realized gains 1 29 145 Gross realized losses 1 — (176) Held-to-maturity Proceeds from calls of debt securities 5,535 4,635 Gross realized gains 1 — 8 Gross realized losses 1 (13) (91) ______________________________ 1 The gain or loss on the sale or call of each debt security is determined by the specific identification method. Allowance for Credit Losses - Available-For-Sale Debt Securities In assessing whether a credit loss existed on available-for-sale debt securities with unrealized losses, the Company compared the present value of cash flows expected to be collected from the debt securities with the amortized cost basis of the debt securities. In addition, the following factors were evaluated individually and collectively in determining the existence of expected credit losses: • credit ratings from Nationally Recognized Statistical Rating Organizations (“NRSRO” entities such as Standard and Poor’s [“S&P”] and Moody’s); • extent to which the fair value is less than cost; • adverse conditions, if any, specifically related to the impaired securities, including the industry and geographic area; • the overall deal and payment structure of the debt securities, including the investor entity’s position within the structure, underlying obligors, financial condition and near-term prospects of the issuer, including specific events which may affect the issuer’s operations or future earnings, and credit support or enhancements; and • failure of the issuer and underlying obligors, if any, to make scheduled payments of interest and principal. The following tables summarize available-for-sale debt securities that were in an unrealized loss position for which an ACL has not been recorded, based on the length of time the individual securities have been in an unrealized loss position. The number of available-for-sale debt securities in an unrealized position is also disclosed. March 31, 2024 Number Less than 12 Months 12 Months or More Total (Dollars in thousands) Fair Unrealized Fair Unrealized Fair Unrealized Available-for-sale U.S. government and federal agency 56 $ 2,512 (42) 449,659 (29,915) 452,171 (29,957) U.S. government sponsored enterprises 16 6,931 (5) 299,695 (22,761) 306,626 (22,766) State and local governments 99 14,909 (43) 64,440 (3,739) 79,349 (3,782) Corporate bonds 2 — — 13,362 (675) 13,362 (675) Residential mortgage-backed securities 402 1,040 (28) 2,677,271 (350,672) 2,678,311 (350,700) Commercial mortgage-backed securities 152 31,890 (1,685) 1,024,142 (86,338) 1,056,032 (88,023) Total available-for-sale 727 $ 57,282 (1,803) 4,528,569 (494,100) 4,585,851 (495,903) December 31, 2023 Number Less than 12 Months 12 Months or More Total (Dollars in thousands) Fair Unrealized Fair Unrealized Fair Unrealized Available-for-sale U.S. government and federal agency 57 $ 3,702 (56) 448,909 (29,613) 452,611 (29,669) U.S. government sponsored enterprises 14 — — 299,220 (22,774) 299,220 (22,774) State and local governments 85 3,039 (2) 64,645 (3,271) 67,684 (3,273) Corporate bonds 4 — — 23,262 (756) 23,262 (756) Residential mortgage-backed securities 402 1,430 (44) 2,809,482 (355,289) 2,810,912 (355,333) Commercial mortgage-backed securities 151 21,232 (268) 1,034,183 (86,302) 1,055,415 (86,570) Total available-for-sale 713 $ 29,403 (370) 4,679,701 (498,005) 4,709,104 (498,375) With respect to severity, the majority of available-for-sale debt securities with unrealized loss positions at March 31, 2024 have unrealized losses as a percentage of book value of less than five percent. A substantial portion of such securities were issued by Federal National Mortgage Association (“Fannie Mae”), Federal Home Loan Mortgage Corporation (“Freddie Mac”), Government National Mortgage Association (“Ginnie Mae”) and other agencies of the U.S. government or have credit ratings issued by one or more of the NRSRO entities in the four highest credit rating categories. All of the Company’s available-for-sale debt securities with unrealized loss positions at March 31, 2024 have been determined to be investment grade. The Company did not have any past due available-for-sale debt securities as of March 31, 2024 and December 31, 2023, respectively. Accrued interest receivable on available-for-sale debt securities totaled $9,315,000 and $9,319,000 at March 31, 2024, and December 31, 2023, respectively, and was excluded from the estimate of credit losses. Based on an analysis of its available-for-sale debt securities with unrealized losses as of March 31, 2024, the Company determined the decline in value was unrelated to credit losses and was primarily the result of changes in interest rates and market spreads subsequent to acquisition. The fair value of the debt securities is expected to recover as payments are received and the debt securities approach maturity. In addition, as of March 31, 2024, management determined it did not intend to sell available-for-sale debt securities with unrealized losses, and there was no expected requirement to sell such securities before recovery of their amortized cost. As a result, no ACL was recorded on available-for-sale debt securities at March 31, 2024. As part of this determination, the Company considered contractual obligations, regulatory constraints, liquidity, capital, asset/liability management and securities portfolio objectives and whether or not any of the Company’s investment securities were managed by third-party investment funds. Allowance for Credit Losses - Held-To-Maturity Debt Securities The Company measured expected credit losses on held-to-maturity debt securities on a collective basis by major security type and NRSRO credit ratings, which is the Company’s primary credit quality indicator for state and local government securities. The estimate of expected credit losses considered historical credit loss information that was adjusted for current conditions as well as reasonable and supportable forecasts. The following table summarizes the amortized cost of held-to-maturity municipal bonds aggregated by NRSRO credit rating: (Dollars in thousands) March 31, December 31, Municipal bonds held-to-maturity S&P: AAA / Moody’s: Aaa $ 422,288 427,918 S&P: AA+, AA, AA- / Moody’s: Aa1, Aa2, Aa3 1,180,187 1,182,894 S&P: A+, A, A- / Moody’s: A1, A2, A3 35,015 37,742 Not rated by either entity 4,061 1,446 Total municipal bonds held-to-maturity $ 1,641,551 1,650,000 The Company’s municipal bonds in the held-to-maturity debt securities portfolio is primarily comprised of general obligation and revenue bonds with NRSRO ratings in the four highest credit rating categories. All of the Company’s municipal bonds that are classified as held-to-maturity debt securities at March 31, 2024 have been determined to be investment grade. Held-to-maturity debt securities included in the Company’s U.S. government and federal agency and residential mortgage-backed security categories are issued and guaranteed by the U.S. Treasury, Fannie Mae, Freddie Mac, Ginnie Mae and other agencies of the U.S. government are considered to be zero-loss securities. This determination is in consideration of the explicit and implicit guarantees by the US Government, the US Government’s ability to print its own currency, a history of no credit losses by the US Government and noted agencies and the current economic and financial condition of the United States and US Government providing no indication the zero-loss determination is unjustified . As of March 31, 2024 and December 31, 2023, the Company did not have any held-to-maturity debt securities past due. Accrued interest receivable on held-to-maturity debt securities totaled $21,685,000 and $16,990,000 at March 31, 2024 and December 31, 2023, respectively, and were excluded from the estimate of credit losses. Based on the Company’s evaluation, an insignificant amount of credit losses is expected on the held-to-maturity debt securities portfolio; therefore, no ACL was recorded at March 31, 2024 or December 31, 2023.

Loans Receivable, Net

Loans Receivable, Net	3 Months Ended
	Mar. 31, 2024
Receivables [Abstract]
Loans Receivable, Net	Loans Receivable, Net The following table presents loans receivable for each portfolio segment of loans: . (Dollars in thousands) March 31, December 31, Residential real estate $ 1,752,514 1,704,544 Commercial real estate 10,672,269 10,303,306 Other commercial 3,030,608 2,901,863 Home equity 883,062 888,013 Other consumer 394,049 400,356 Loans receivable 16,732,502 16,198,082 Allowance for credit losses (198,779) (192,757) Loans receivable, net $ 16,533,723 16,005,325 Net deferred origination (fees) costs included in loans receivable $ (24,769) (25,577) Net purchase accounting (discounts) premiums included in loans receivable $ (25,755) (13,802) Accrued interest receivable on loans $ 74,166 67,362 Substantially all of the Company’s loans receivable are with borrowers in the Company’s geographic market areas. Although the Company has a diversified loan portfolio, a substantial portion of borrowers’ ability to service their obligations is dependent upon the economic performance in the Company’s markets. The Company had no significant purchases or sales of portfolio loans or reclassification of loans held for investment to loans held for sale during the three months ended March 31, 2024. Allowance for Credit Losses - Loans Receivable The ACL is a valuation account that is deducted from the amortized cost basis to present the net amount expected to be collected on loans. The following tables summarize the activity in the ACL: Three Months ended March 31, 2024 (Dollars in thousands) Total Residential Real Estate Commercial Real Estate Other Commercial Home Equity Other Consumer Balance at beginning of period $ 192,757 22,325 130,924 21,194 11,766 6,548 Acquisitions 3 — 3 — — — Provision for credit losses 9,091 1,837 4,207 2,293 (764) 1,518 Charge-offs (4,295) — — (1,932) (25) (2,338) Recoveries 1,223 4 19 539 22 639 Balance at end of period $ 198,779 24,166 135,153 22,094 10,999 6,367 Three Months ended March 31, 2023 (Dollars in thousands) Total Residential Real Estate Commercial Real Estate Other Commercial Home Equity Other Consumer Balance at beginning of period $ 182,283 19,683 125,816 21,454 10,759 4,571 Provision for credit losses 6,260 293 4,704 (121) (230) 1,614 Charge-offs (3,293) (5) (347) (772) (4) (2,165) Recoveries 1,354 3 80 603 45 623 Balance at end of period $ 186,604 19,974 130,253 21,164 10,570 4,643 During the three months ended March 31, 2024, the ACL increased primarily as a result of loan portfolio growth. The sizeable charge-offs in the other consumer loan segment is driven by deposit overdraft charge-offs which typically experience high charge-off rates and the amounts were comparable to historical trends. The other segments experience routine charge-offs and recoveries, with occasional large credit relationships charge-offs and recoveries that cause fluctuations from prior periods. During the three months ended March 31, 2024, there have been no significant changes to the types of collateral securing collateral-dependent loans. Aging Analysis The following tables present an aging analysis of the recorded investment in loans: March 31, 2024 (Dollars in thousands) Total Residential Commercial Other Home Other Accruing loans 30-59 days past due $ 35,185 8,920 12,559 7,082 3,395 3,229 Accruing loans 60-89 days past due 27,238 — 15,069 11,026 295 848 Accruing loans 90 days or more past due 3,796 1 2,683 891 172 49 Non-accrual loans with no ACL 20,650 2,728 13,956 1,552 1,788 626 Non-accrual loans with ACL 88 — — — — 88 Total past due and non-accrual loans 86,957 11,649 44,267 20,551 5,650 4,840 Current loans receivable 16,645,545 1,740,865 10,628,002 3,010,057 877,412 389,209 Total loans receivable $ 16,732,502 1,752,514 10,672,269 3,030,608 883,062 394,049 December 31, 2023 (Dollars in thousands) Total Residential Commercial Other Home Other Accruing loans 30-59 days past due $ 43,455 5,342 18,134 12,745 3,006 4,228 Accruing loans 60-89 days past due 6,512 729 2,439 774 1,527 1,043 Accruing loans 90 days or more past due 3,312 107 2,161 530 283 231 Non-accrual loans with no ACL 20,722 2,562 13,680 1,869 1,966 645 Non-accrual loans with ACL 94 — — 7 — 87 Total past due and non-accrual loans 74,095 8,740 36,414 15,925 6,782 6,234 Current loans receivable 16,123,987 1,695,804 10,266,892 2,885,938 881,231 394,122 Total loans receivable $ 16,198,082 1,704,544 10,303,306 2,901,863 888,013 400,356 The Company had $25,000 and $27,000 of interest reversed on non-accrual loans during the three months ended March 31, 2024 and March 31, 2023, respectively. Collateral-Dependent Loans A loan is considered collateral-dependent when the borrower is experiencing financial difficulty and repayment is expected to be provided substantially through the operation or sale of the collateral. The collateral on the loans is a significant portion of what secures the collateral-dependent loans and significant changes to the fair value of the collateral can impact the ACL. During the three months ended March 31, 2024, there were no significant changes to collateral which secures the collateral-dependent loans, whether due to general deterioration or other reasons. The following table presents the amortized cost basis of collateral-dependent loans by collateral type: March 31, 2024 (Dollars in thousands) Total Residential Commercial Other Home Other Business assets $ 11,056 — 4 11,052 — — Residential real estate 17,757 11,316 4,235 294 1,768 144 Other real estate 20,794 7 19,794 612 20 361 Other 528 — — 14 — 514 Total $ 50,135 11,323 24,033 11,972 1,788 1,019 December 31, 2023 (Dollars in thousands) Total Residential Commercial Other Home Other Business assets $ 3,236 — 6 3,230 — — Residential real estate 17,578 11,099 4,317 98 1,968 96 Other real estate 21,635 35 20,598 620 25 357 Other 595 — — 15 — 580 Total $ 43,044 11,134 24,921 3,963 1,993 1,033 Loan Modifications Made to Borrowers Experiencing Financial Difficulty On January 1, 2023, the Company adopted FASB ASU 2022-02, Financial Instruments - Credit Losses Troubled Debt Restructurings and Vintage Disclosures, which changed the disclosures and classifications of loans previously considered TDRs. The following disclosures for loan modifications made to borrowers experiencing financial difficulty (“MBFD”) are presented in accordance with ASC Topic 310. The following tables show the amortized cost basis at the end of the period of the loans modified to borrowers experiencing financial difficulty by segment: At or for the Three Months ended March 31, 2024 Interest Rate Reduction Term Extension and Payment Deferral Principal Combination - Term Extension and Interest Rate Reduction (Dollars in thousands) Amortized Cost Basis % of Total Class Amortized Cost Basis % of Total Class Amortized Cost Basis % of Total Class Amortized Cost Basis % of Total Class Total Residential real estate $ — — % $ 1,112 0.1 % $ — — % $ — — % $ 1,112 Commercial real estate 2,758 — % 13,978 0.1 % 658 — % 30,525 0.3 % 47,919 Other commercial — — % 16,185 0.5 % — — % 1,587 0.1 % 17,772 Home equity — — % 88 — % — — % — — % 88 Other consumer — — % 34 — % — — % — — % 34 Total $ 2,758 $ 31,397 $ 658 $ 32,112 $ 66,925 At or for the Three Months ended March 31, 2023 Term Extension and Payment Deferral Principal Combination - Term Extension and Interest Rate Reduction (Dollars in thousands) Amortized Cost Basis % of Total Class of Financing Receivable Amortized Cost Basis % of Total Class of Financing Receivable Amortized Cost Basis % of Total Class of Financing Receivable Total Commercial real estate $ 4,981 — % $ — — % $ 35 — % $ 5,016 Other commercial 1,568 0.1 % — — % 25 — % 1,593 Other consumer 18 — % 10 — % — — % 28 Total $ 6,567 $ 10 $ 60 $ 6,637 The following tables describe the financial effect of the modifications made to borrowers experiencing financial difficulty by segment: At or for the Three Months ended March 31, 2024 Weighted Average Interest Rate Reduction Weighted Average Term Extension Principal Forgiveness Residential real estate —% 1.7 years — Commercial real estate 1.24% 4 months — Other commercial —% 1.2 years — Home equity —% 9 months — Other consumer —% 1 month — At or for the Three Months ended March 31, 2023 Weighted Average Interest Rate Reduction Weighted Average Term Extension Principal Forgiveness Commercial real estate 2.11% 10 months — Other commercial —% 6 months — Other consumer —% 8 months $10 thousand Loans that were modified in the twelve months that had a payment default during the period had an ending balance $2,159,000 at March 31, 2024, and were included in commercial real estate loans. There were $2,753,000 and $5,361,000 of additional unfunded commitments on MBFDs outstanding at March 31, 2024 and December 31, 2023, respectively. At March 31, 2024 and December 31, 2023, the Company had $0 and $98,000, respectively, of consumer mortgage loans secured by residential real estate properties for which formal foreclosure proceedings are in process. At March 31, 2024 and December 31, 2023, the Company had $0 and $0, respectively, of OREO secured by residential real estate properties. The following tables depict the performance of loans that have been modified in the last twelve months by segment: March 31, 2024 (Dollars in thousands) Total Current 30-89 Days Past Due 90 Days or More Past Due Non-Accrual Residential real estate $ 1,112 1,112 — — — Commercial real estate 47,919 44,210 — — 3,709 Other commercial 17,772 17,184 32 — 556 Home equity 88 — — — 88 Other consumer 34 34 — — — Total $ 66,925 62,540 32 — 4,353 March 31, 2023 (Dollars in thousands) Total Current 30-89 Days Past Due 90 Days or More Past Due Non-Accrual Commercial real estate $ 5,016 1,446 3,570 — — Other commercial 1,593 1,379 193 21 — Other consumer 28 28 — — — Total $ 6,637 2,853 3,763 21 — Credit Quality Indicators The Company categorizes commercial real estate and other commercial loans into risk categories based on relevant information about the ability of borrowers to service their obligations. The following tables present the amortized cost in commercial real estate and other commercial loans based on the Company’s internal risk rating. The date of a modification, renewal or extension of a loan is considered for the year of origination if the terms of the loan are as favorable to the Company as the terms are for a comparable loan to other borrowers with similar credit risk. March 31, 2024 (Dollars in thousands) Gross Charge-Offs Total Pass Special Mention Substandard Doubtful/ Commercial real estate loans Term loans by origination year 2024 (year-to-date) $ — 375,228 346,700 525 28,003 — 2023 — 1,309,692 1,306,800 2,490 402 — 2022 — 2,576,908 2,545,228 18,967 12,713 — 2021 — 2,234,493 2,201,926 21,305 11,262 — 2020 — 1,129,734 1,118,991 4,627 6,116 — Prior — 2,758,200 2,681,056 12,565 64,548 31 Revolving loans — 288,014 285,967 198 847 1,002 Total $ — 10,672,269 10,486,668 60,677 123,891 1,033 Other commercial loans Term loans by origination year 2024 (year-to-date) $ 1,448 72,882 72,804 32 19 27 2023 — 376,046 374,248 217 1,581 — 2022 48 564,827 559,005 1,364 4,457 1 2021 311 522,039 509,608 10,216 2,213 2 2020 76 236,089 229,213 1,926 4,948 2 Prior 49 581,118 556,228 — 24,881 9 Revolving loans — 677,607 661,798 2,501 12,817 491 Total $ 1,932 3,030,608 2,962,904 16,256 50,916 532 December 31, 2023 (Dollars in thousands) Gross Charge-Offs Total Pass Special Mention Substandard Doubtful/ Commercial real estate loans Term loans by origination year 2023 $ 889 $ 1,316,100 1,313,446 97 2,557 — 2022 430 2,547,939 2,520,484 12,855 14,600 — 2021 145 2,200,677 2,178,153 19,782 2,742 — 2020 — 1,130,117 1,124,525 — 5,592 — 2019 — 691,810 656,203 1,104 34,503 — Prior 616 2,129,808 2,053,011 18,818 57,948 31 Revolving loans — 286,855 285,432 1 1,421 1 Total $ 2,080 $ 10,303,306 10,131,254 52,657 119,363 32 Other commercial loans Term loans by origination year 2023 $ 3,080 $ 369,059 367,337 — 1,603 119 2022 406 566,295 561,567 3,319 1,408 1 2021 — 531,558 519,151 10,187 2,218 2 2020 92 245,962 240,613 — 5,347 2 2019 — 145,828 141,336 — 4,490 2 Prior 313 448,619 443,400 — 5,219 — Revolving loans — 594,542 577,953 11,977 4,612 — Total $ 3,891 $ 2,901,863 2,851,357 25,483 24,897 126 For residential real estate, home equity and other consumer loan segments, the Company evaluates credit quality primarily on the aging status of the loan. The following tables present the amortized cost in residential real estate, home equity and other consumer loans based on payment performance: March 31, 2024 (Dollars in thousands) Gross Charge-Offs Total Performing 30-89 Days Past Due Non-Accrual and 90 Days or More Past Due Residential real estate loans Term loans by origination year 2024 (year-to-date) $ — 19,177 19,177 — — 2023 — 274,053 272,755 1,298 — 2022 — 680,095 675,305 4,790 — 2021 — 487,436 487,070 366 — 2020 — 97,272 97,094 178 — Prior — 194,211 189,194 2,288 2,729 Revolving loans — 270 270 — — Total $ — 1,752,514 1,740,865 8,920 2,729 Home equity loans Term loans by origination year 2024 (year-to-date) $ — — — — — 2023 15 80 80 — — 2022 — — — — — 2021 — 132 132 — — 2020 — 19 19 — — Prior 10 5,285 5,195 10 80 Revolving loans — 877,546 871,986 3,680 1,880 Total $ 25 883,062 877,412 3,690 1,960 Other consumer loans Term loans by origination year 2024 (year-to-date) $ 2,016 34,356 32,449 1,907 — 2023 95 120,609 120,230 244 135 2022 136 88,996 88,326 487 183 2021 30 57,852 57,040 658 154 2020 22 24,906 24,797 96 13 Prior 39 26,798 26,340 182 276 Revolving loans — 40,532 40,027 503 2 Total $ 2,338 394,049 389,209 4,077 763 December 31, 2023 (Dollars in thousands) Gross Charge-Offs Total Performing 30-89 Days Past Due Non-Accrual and 90 Days or More Past Due Residential real estate loans Term loans by origination year 2023 $ — $ 234,568 233,753 815 — 2022 5 673,782 671,196 2,586 — 2021 — 495,645 495,645 — — 2020 — 99,199 99,199 — — 2019 — 42,054 42,054 — — Prior 15 158,828 153,489 2,670 2,669 Revolving loans — 468 468 — — Total $ 20 $ 1,704,544 1,695,804 6,071 2,669 Home equity loans Term loans by origination year 2023 $ — $ — — — — 2022 — 20 20 — — 2021 48 — — — — 2020 50 21 21 — — 2019 — 178 178 — — Prior 31 5,492 5,277 11 204 Revolving loans — 882,302 875,735 4,522 2,045 Total $ 129 $ 888,013 881,231 4,533 2,249 Other consumer loans Term loans by origination year 2023 $ 7,801 $ 139,295 137,035 2,079 181 2022 715 98,630 97,536 870 224 2021 170 62,961 62,107 805 49 2020 85 29,143 29,012 119 12 2019 73 12,335 12,279 43 13 Prior 131 17,314 16,664 173 477 Revolving loans — 40,678 39,489 1,182 7 Total $ 8,975 $ 400,356 394,122 5,271 963

Leases

Leases	3 Months Ended
	Mar. 31, 2024
Leases [Abstract]
Leases	Leases The Company leases certain land, premises and equipment from third parties. ROU assets for operating and finance leases are included in net premises and equipment and lease liabilities are included in other liabilities and other borrowed funds, respectively, on the Company’s statements of financial condition. The following table summarizes the Company’s leases: March 31, 2024 December 31, 2023 (Dollars in thousands) Finance Operating Finance Operating ROU assets $ 31,413 31,222 Accumulated depreciation (8,030) (6,940) Net ROU assets $ 23,383 40,065 24,282 40,781 Lease liabilities $ 24,335 43,706 25,116 44,319 Weighted-average remaining lease term 11 years 16 years 11 years 16 years Weighted-average discount rate 3.6 % 3.7 % 3.6 % 3.7 % Maturities of lease liabilities consist of the following: March 31, 2024 (Dollars in thousands) Finance Operating Maturing within one year $ 4,716 4,655 Maturing one year through two years 4,725 4,749 Maturing two years through three years 4,734 4,605 Maturing three years through four years 3,701 4,193 Maturing four years through five years 581 3,730 Thereafter 10,988 38,151 Total lease payments 29,445 60,083 Present value of lease payments Short-term 3,911 3,134 Long-term 20,424 40,572 Total present value of lease payments 24,335 43,706 Difference between lease payments and present value of lease payments $ 5,110 16,377 The components of lease expense consist of the following: Three Months ended (Dollars in thousands) March 31, March 31, Finance lease cost Amortization of ROU assets 1,090 1,026 Interest on lease liabilities 224 244 Operating lease cost 1,318 1,496 Short-term lease cost 123 205 Variable lease cost 464 443 Sublease income (10) (13) Total lease expense 3,209 3,401 Supplemental cash flow information related to leases is as follows: Three Months ended March 31, 2024 March 31, 2023 (Dollars in thousands) Finance Operating Finance Operating Cash paid for amounts included in the measurement of lease liabilities Operating cash flows $ 224 824 244 926 Financing cash flows 948 N/A 861 N/A
Leases	Leases The Company leases certain land, premises and equipment from third parties. ROU assets for operating and finance leases are included in net premises and equipment and lease liabilities are included in other liabilities and other borrowed funds, respectively, on the Company’s statements of financial condition. The following table summarizes the Company’s leases: March 31, 2024 December 31, 2023 (Dollars in thousands) Finance Operating Finance Operating ROU assets $ 31,413 31,222 Accumulated depreciation (8,030) (6,940) Net ROU assets $ 23,383 40,065 24,282 40,781 Lease liabilities $ 24,335 43,706 25,116 44,319 Weighted-average remaining lease term 11 years 16 years 11 years 16 years Weighted-average discount rate 3.6 % 3.7 % 3.6 % 3.7 % Maturities of lease liabilities consist of the following: March 31, 2024 (Dollars in thousands) Finance Operating Maturing within one year $ 4,716 4,655 Maturing one year through two years 4,725 4,749 Maturing two years through three years 4,734 4,605 Maturing three years through four years 3,701 4,193 Maturing four years through five years 581 3,730 Thereafter 10,988 38,151 Total lease payments 29,445 60,083 Present value of lease payments Short-term 3,911 3,134 Long-term 20,424 40,572 Total present value of lease payments 24,335 43,706 Difference between lease payments and present value of lease payments $ 5,110 16,377 The components of lease expense consist of the following: Three Months ended (Dollars in thousands) March 31, March 31, Finance lease cost Amortization of ROU assets 1,090 1,026 Interest on lease liabilities 224 244 Operating lease cost 1,318 1,496 Short-term lease cost 123 205 Variable lease cost 464 443 Sublease income (10) (13) Total lease expense 3,209 3,401 Supplemental cash flow information related to leases is as follows: Three Months ended March 31, 2024 March 31, 2023 (Dollars in thousands) Finance Operating Finance Operating Cash paid for amounts included in the measurement of lease liabilities Operating cash flows $ 224 824 244 926 Financing cash flows 948 N/A 861 N/A

Goodwill

Goodwill	3 Months Ended
	Mar. 31, 2024
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill	Goodwill The following schedule discloses the changes in the carrying value of goodwill: Three Months ended (Dollars in thousands) March 31, March 31, Net carrying value at beginning of period 985,393 985,393 Acquisitions and adjustments 38,369 — Net carrying value at end of period 1,023,762 985,393

Loan Servicing

Loan Servicing	3 Months Ended
	Mar. 31, 2024
Mortgage Banking [Abstract]
Loan Servicing	Loan Servicing Mortgage loans that are serviced for others are not reported as assets, only the servicing rights are recorded and included in other assets. The following schedules disclose the change in the carrying value of mortgage servicing rights that is included in other assets, principal balances of loans serviced and the fair value of mortgage servicing rights: (Dollars in thousands) March 31, December 31, Carrying value at beginning of period $ 12,534 13,488 Additions 58 434 Amortization (294) (1,388) Carrying value at end of period $ 12,298 12,534 Principal balances of loans serviced for others $ 1,550,129 1,570,834 Fair value of servicing rights $ 17,933 18,000 The following table summarizes the carrying value of the Company’s securities sold under agreements to repurchase (“repurchase agreements”) by remaining contractual maturity of the agreements and category of collateral: Overnight and Continuous (Dollars in thousands) March 31, December 31, U.S. government and federal agency $ — $ 113,509 Residential mortgage-backed securities 1,540,008 1,306,047 Commercial mortgage-backed securities — 67,294 Total $ 1,540,008 1,486,850

Variable Interest Entities

Variable Interest Entities	3 Months Ended
	Mar. 31, 2024
Equity Method Investments and Joint Ventures [Abstract]
Variable Interest Entities	Variable Interest Entities A VIE is a partnership, limited liability company, trust or other legal entity that meets one of the following criteria: 1) the entity’s equity investment at risk is not sufficient to permit the entity to finance its activities without additional subordinated financial support from other parties; 2) the holders of the equity investment at risk, as a group, lack the characteristics of a controlling financial interest; and 3) the voting rights of some holders of the equity investment at risk are disproportionate to their obligation to absorb losses or receive returns, and substantially all of the activities are conducted on behalf of the holder of equity investment at risk with disproportionately few voting rights. A VIE must be consolidated by the Company if it is deemed to be the primary beneficiary, which is the party involved with the VIE that has both: 1) the power to direct the activities of the VIE that most significantly affect the VIE’s economic performance; and 2) the obligation to absorb the losses of the VIE that could potentially be significant to the VIE or the right to receive benefits from the VIE that could potentially be significant to the VIE. The Company’s VIEs are regularly monitored to determine if any reconsideration events have occurred that could cause the primary beneficiary status to change. A previously unconsolidated VIE is consolidated when the Company becomes the primary beneficiary. A previously consolidated VIE is deconsolidated when the Company ceases to be the primary beneficiary or the entity is no longer a VIE. Consolidated Variable Interest Entities The Company has equity investments in Certified Development Entities (“CDE”) which have received allocations of New Markets Tax Credits (“NMTC”). The NMTC program provides federal tax incentives to investors to make investments in distressed communities and promotes economic improvements through the development of successful businesses in these communities. The NMTC is available to investors over seven years and is subject to recapture if certain events occur during such period. The maximum exposure to loss in the CDEs is the amount of equity invested and credit extended by the Company. However, the Company has credit protection in the form of indemnification agreements, guarantees, and collateral arrangements. The Company has evaluated the variable interests held by the Company in each CDE (NMTC) investment and determined the Company does not individually meet the characteristics of a primary beneficiary; however, the related-party group does meet the criteria as a group and substantially all of the activities of the CDEs either involve or are conducted on behalf of the Company. As a result, the Company is the primary beneficiary of the CDEs and their assets, liabilities, and results of operations are included in the Company’s consolidated financial statements. The primary activities of the CDEs are recognized in commercial loans interest income and other borrowed funds interest expense on the Company’s statements of operations and the federal income tax credit allocations from the investments are recognized in the Company’s statements of operations as a component of income tax expense. Such related cash flows are recognized in loans originated, principal collected on loans and change in other borrowed funds. The Bank is also the sole member of certain tax credit funds that make direct investments in qualified affordable housing projects (e.g., Low-Income Housing Tax Credit [“LIHTC”] partnerships). As such, the Company is the primary beneficiary of these tax credit funds and their assets, liabilities, and results of operations are included in the Company’s consolidated financial statements. The following table summarizes the carrying amounts of the consolidated VIEs’ assets and liabilities included in the Company’s statements of financial condition and are adjusted for intercompany eliminations. All assets presented can be used only to settle obligations of the consolidated VIEs and all liabilities presented consist of liabilities for which creditors and other beneficial interest holders therein have no recourse to the general credit of the Company. (Dollars in thousands) March 31, December 31, Assets Loans receivable $ 147,353 136,527 Accrued interest receivable 587 376 Other assets 78,278 48,924 Total assets $ 226,218 185,827 Liabilities Other borrowed funds $ 64,480 56,578 Accrued interest payable 467 242 Other liabilities 28,655 182 Total liabilities $ 93,602 57,002 Unconsolidated Variable Interest Entities The Company has equity investments in LIHTC partnerships, both directly and through tax credit funds, with carrying values of $189,607,000 and $83,962,000 as of March 31, 2024 and December 31, 2023, respectively. The LIHTCs are indirect federal subsidies to finance low-income housing and are used in connection with both newly constructed and renovated residential rental buildings. Once a project is placed in service, it is generally eligible for the tax credit for ten years. To continue generating the tax credit and to avoid tax credit recapture, a LIHTC building must satisfy specific low-income housing compliance rules for a full fifteen years. The maximum exposure to loss in the VIEs is the amount of equity invested and credit extended by the Company. However, the Company has credit protection in the form of indemnification agreements, guarantees, and collateral arrangements. The Company has evaluated the variable interests held by the Company in each LIHTC investment and determined that the Company does not have controlling financial interests in such investments, and is not the primary beneficiary. The Company reports the investments in the unconsolidated LIHTCs as other assets on the Company’s statements of financial condition and any unfunded equity commitments in other liabilities. There were no impairment losses on the Company’s LIHTC investments during the three months ended March 31, 2024 and 2023. Future unfunded contingent equity commitments related to the Company’s LIHTC investments at March 31, 2024 are as follows: (Dollars in thousands) Amount Years ending December 31, 2024 $ 50,773 2025 39,759 2026 10,661 2027 355 2028 287 Thereafter 2,337 Total $ 104,172 The Company has elected to use the proportional amortization method, and more specifically the practical expedient method, for the amortization of all eligible LIHTC investments and amortization expense is recognized as a component of income tax expense. The following table summarizes the amortization expense and the amount of tax credits and other tax benefits recognized for qualified affordable housing project investments during the periods presented. Three Months ended (Dollars in thousands) March 31, March 31, Amortization expense $ 5,184 3,949 Tax credits and other tax benefits recognized 6,802 5,283 The Company also owns the following trust subsidiaries, each of which issued trust preferred securities as capital instruments: Glacier Capital Trust II, Glacier Capital Trust III, Glacier Capital Trust IV, Citizens (ID) Statutory Trust I, Bank of the San Juans Bancorporation Trust I, First Company Statutory Trust 2001, First Company Statutory Trust 2003, FNB (UT) Statutory Trust I and FNB (UT) Statutory Trust II. The trust subsidiaries have no assets, operations, revenues or cash flows other than those related to the issuance, administration and repayment of the securities held by third parties. The trust subsidiaries are not included in the Company’s consolidated financial statements because the sole asset of each trust subsidiary is a receivable from the Company, even though the Company owns all of the voting equity shares of the trust subsidiaries, has fully guaranteed the obligations of the trust subsidiaries and may have the right to redeem the third party securities under certain circumstances. The Company reports the trust preferred securities issued to the trust subsidiaries as subordinated debentures on the Company’s statements of financial condition.

Securities Sold Under Agreement

Securities Sold Under Agreements to Repurchase	3 Months Ended
	Mar. 31, 2024
Transfers and Servicing [Abstract]
Securities Sold Under Agreements to Repurchase	Loan Servicing Mortgage loans that are serviced for others are not reported as assets, only the servicing rights are recorded and included in other assets. The following schedules disclose the change in the carrying value of mortgage servicing rights that is included in other assets, principal balances of loans serviced and the fair value of mortgage servicing rights: (Dollars in thousands) March 31, December 31, Carrying value at beginning of period $ 12,534 13,488 Additions 58 434 Amortization (294) (1,388) Carrying value at end of period $ 12,298 12,534 Principal balances of loans serviced for others $ 1,550,129 1,570,834 Fair value of servicing rights $ 17,933 18,000 The following table summarizes the carrying value of the Company’s securities sold under agreements to repurchase (“repurchase agreements”) by remaining contractual maturity of the agreements and category of collateral: Overnight and Continuous (Dollars in thousands) March 31, December 31, U.S. government and federal agency $ — $ 113,509 Residential mortgage-backed securities 1,540,008 1,306,047 Commercial mortgage-backed securities — 67,294 Total $ 1,540,008 1,486,850

Derivatives and Hedging Activit

Derivatives and Hedging Activities	3 Months Ended
	Mar. 31, 2024
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivatives and Hedging Activities	Derivatives and Hedging Activities Cash Flow Hedges Interest Rate Cap Derivatives. The Company has purchased interest rate caps designated as cash flow hedges with notional amounts totaling $130,500,000 on its variable rate subordinated debentures and were determined to be fully effective during the three months ended March 31, 2024. The interest rate caps require receipt of variable amounts from the counterparty when interest rates rise above the strike price in the contracts. The strike prices in the five year term contracts range from 1.5 percent to 2 percent. The variable rate is based on 90 days of compounded overnight SOFR plus a spread of 0.26161 percent. At March 31, 2024 and December 31, 2023, the interest rate caps had a fair value of $4,345,000 and $4,990,000, respectively, and were reported as other assets on the Company’s statements of financial condition. Amortization recorded on the interest rate caps totaled $42,000 for the three months ended March 31, 2024 and 2023, respectively, and was reported as a component of interest expense on subordinated debentures. The effect of cash flow hedge accounting on OCI for the periods ending March 31, 2024 and 2023 was as follows: Three Months ended (Dollars in thousands) March 31, March 31, Amount of gain recognized in OCI $ 657 (36) Amount of gain reclassified from OCI to net income 1,260 974 Fair Value Hedges Interest Rate Swap Agreements. During 2023, the Company entered into fair value hedges for a closed pool of fixed rate debt securities. The instruments are designated as fair value hedges as the changes in the fair value of the interest rate swap are expected to offset changes in the fair value of the hedged item attributable to changes in the compounded overnight SOFR rate, the designated benchmark interest rate. These derivative contracts involve the receipt of floating rate interest from a counterparty in exchange for the Company making fixed-rate payments over the life of the contract, without the exchange of the underlying notional value. The following tables present the notional and estimated fair value amount of derivative positions outstanding: March 31, 2024 Weighted Average (Dollars in thousands) Notional Amount Asset Derivative Liability Derivative Remaining Maturity Receive Rate Pay Rate Interest rate swap - securities $ 1,500,000 $ 1,067 $ 2,279 1.9 years SOFR 4.63 % December 31, 2023 Weighted Average (Dollars in thousands) Notional Amount Asset Derivative Liability Derivative Remaining Maturity Receive Rate Pay Rate Interest rate swap - securities $ 1,500,000 $ — $ 17,988 2.1 years SOFR 4.63 % The following amounts were recorded on the balance sheet related to cumulative basis adjustments for fair value hedges: (Dollars in thousands) Amortized cost of the Hedged Assets Amortized Cost of Fair Value Hedging Increase (Decrease) Included in the Carrying Amount of the Hedged Assets Line item on the balance sheet March 31, December 31, March 31, December 31, Investment securities available-for-sale $ 3,678,606 $ 3,807,239 $ 1,212 $ 17,988 The effects of the fair value hedge relationships on the income statement were as follows: Three Months Ended (Dollars in thousands) Location of Gain (Loss) March 31, 2024 March 31, 2023 Interest rate swap Interest income on investment securities $ 3,078 $ — AFS debt Interest income on investment securities (3,078) — Residential Real Estate Derivatives

Other Expenses

Other Expenses	3 Months Ended
	Mar. 31, 2024
Other Expenses [Abstract]
Other Expenses	Other Expenses Other expenses consists of the following: Three Months ended (Dollars in thousands) March 31, March 31, Mergers and acquisition expenses $ 5,725 352 Consulting and outside services 4,727 4,081 Debit card expenses 3,582 2,965 VIE amortization and other expenses 3,308 2,528 Loan expenses 2,299 1,707 Business development 1,648 1,361 Telephone 1,551 1,579 Checking and operating expenses 1,518 666 Employee expenses 1,432 1,295 Postage 1,246 1,118 Accounting and audit fees 822 1,024 Printing and supplies 721 844 Legal fees 423 325 (Gain) loss on dispositions of fixed assets (1,035) (15) Other 2,516 2,302 Total other expenses $ 30,483 22,132

Accumulated Other Comprehensive

Accumulated Other Comprehensive (Loss) Income	3 Months Ended
	Mar. 31, 2024
Equity [Abstract]
Accumulated Other Comprehensive (Loss) Income	Accumulated Other Comprehensive (Loss) Income The following table illustrates the activity within accumulated other comprehensive (loss) income by component, net of tax: (Dollars in thousands) (Losses) Gains on Available-For-Sale and Transferred Debt Securities (Losses) Gains on Derivatives Used for Cash Flow Hedges Total Balance at January 1, 2023 $ (474,338) 5,546 (468,792) Other comprehensive income (loss) before reclassifications 57,890 (27) 57,863 Reclassification adjustments for gains and transfers included in net income 24 (728) (704) Reclassification adjustments for amortization included in net income for transferred securities 1,405 — 1,405 Net current period other comprehensive (loss) income 59,319 (755) 58,564 Balance at March 31, 2023 $ (415,019) 4,791 (410,228) Balance at January 1, 2024 $ (377,728) 3,615 (374,113) Other comprehensive income before reclassifications 1,527 493 2,020 Reclassification adjustments for gains and transfers included in net income (22) (944) (966) Reclassification adjustments for amortization included in net income for transferred securities 754 — 754 Net current period other comprehensive income (loss) 2,259 (451) 1,808 Balance at March 31, 2024 $ (375,469) 3,164 (372,305)

Earnings Per Share

Earnings Per Share	3 Months Ended
	Mar. 31, 2024
Earnings Per Share [Abstract]
Earnings Per Share	Earnings Per Share Basic earnings per share is computed by dividing net income by the weighted-average number of shares of common stock outstanding during the period presented. Diluted earnings per share is computed by including the net increase in shares as if dilutive outstanding restricted stock units were vested and stock options were exercised, using the treasury stock method. Basic and diluted earnings per share has been computed based on the following: Three Months ended (Dollars in thousands, except per share data) March 31, March 31, Net income available to common stockholders, basic and diluted $ 32,627 61,211 Average outstanding shares - basic 112,492,142 110,824,648 Add: dilutive restricted stock units and stock options 62,260 57,060 Average outstanding shares - diluted 112,554,402 110,881,708 Basic earnings per share $ 0.29 0.55 Diluted earnings per share $ 0.29 0.55 Restricted stock units and stock options excluded from the diluted average outstanding share calculation 1 139,840 205,974 ______________________________ 1 Anti-dilution occurs when the unrecognized compensation cost per share of a restricted stock unit or the exercise price of a stock option exceeds the market price of the Company’s stock.

Fair Value of Assets and Liabil

Fair Value of Assets and Liabilities	3 Months Ended
	Mar. 31, 2024
Fair Value Disclosures [Abstract]
Fair Value of Assets and Liabilities	Fair Value of Assets and Liabilities Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. There is a fair value hierarchy which requires an entity to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value. The three levels of inputs that may be used to measure fair value are as follows: Level 1 Quoted prices in active markets for identical assets or liabilities Level 2 Observable inputs other than Level 1 prices, such as quoted prices for similar assets or liabilities; quoted prices in markets that are not active; or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets or liabilities Level 3 Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities Transfers in and out of Level 1 (quoted prices in active markets), Level 2 (significant other observable inputs) and Level 3 (significant unobservable inputs) are recognized on the actual transfer date. There were no transfers between fair value hierarchy levels during the three month periods ended March 31, 2024 and 2023. Recurring Measurements The following is a description of the inputs and valuation methodologies used for assets and liabilities measured at fair value on a recurring basis, as well as the general classification of such assets and liabilities pursuant to the valuation hierarchy. There have been no significant changes in the valuation techniques during the period ended March 31, 2024. Debt securities, available-for-sal e. The fair value for available-for-sale debt securities is estimated by obtaining quoted market prices for identical assets, where available. If such prices are not available, fair value is based on independent asset pricing services and models, the inputs of which are market-based or independently sourced market parameters, including but not limited to, yield curves, interest rates, volatilities, market spreads, prepayments, defaults, recoveries, cumulative loss projections, and cash flows. Such securities are classified in Level 2 of the valuation hierarchy. Where Level 1 or Level 2 inputs are not available, such securities are classified as Level 3 within the hierarchy. Fair value determinations of available-for-sale debt securities are the responsibility of the Company’s corporate accounting and treasury departments. The Company obtains fair value estimates from independent third party vendors on a monthly basis. The vendors’ pricing system methodologies, procedures and system controls are reviewed to ensure they are appropriately designed and operating effectively. The Company reviews the vendors’ inputs for fair value estimates and the recommended assignments of levels within the fair value hierarchy. The review includes the extent to which markets for debt securities are determined to have limited or no activity, or are judged to be active markets. The Company reviews the extent to which observable and unobservable inputs are used as well as the appropriateness of the underlying assumptions about risk that a market participant would use in active markets, with adjustments for limited or inactive markets. In considering the inputs to the fair value estimates, the Company places less reliance on quotes that are judged to not reflect orderly transactions, or are non-binding indications. In assessing credit risk, the Company reviews payment performance, collateral adequacy, third party research and analyses, credit rating histories and issuers’ financial statements. For those markets determined to be inactive or limited, the valuation techniques used are models for which management has verified that discount rates are appropriately adjusted to reflect illiquidity and credit risk. Loans held for sale, at fair value. Loans held for sale measured at fair value, for which an active secondary market and readily available market prices exist, are initially valued at the transaction price and are subsequently valued by using quoted prices for similar assets, adjusted for specific attributes of that loan or other observable market data, such as outstanding commitments from third party investors. Loans held for sale measured at fair value are classified within Level 2. Included in gain on sale of loans were net losses of $46,000 and net gains of $119,000 for the three month periods ended March 31, 2024 and 2023, respectively, from the changes in fair value of loans held for sale measured at fair value. Electing to measure loans held for sale at fair value reduces certain timing differences and better matches changes in fair value of these assets with changes in the value of the derivative instruments used to economically hedge them without the burden of complying with the requirements for hedge accounting. Loan interest rate lock commitments. Fair value estimates for loan interest rate lock commitments were based upon the estimated sales price, origination fees, direct costs, interest rate changes, etc. and were obtained from an independent third party. The components of the valuation were observable or could be corroborated by observable market data and, therefore, were classified within Level 2 of the valuation hierarchy. Forward commitments to sell TBA securities. Forward commitments to sell TBA securities are used to economically hedge the interest rate risk associated with certain loan commitments. The fair value estimates for the TBA commitments were based upon the estimated sale of the TBA hedge obtained from an independent third party. The components of the valuation were observable or could be corroborated by observable market data and, therefore, were classified within Level 2 of the valuation hierarchy. Interest rate cap derivative financial instruments. Fair value estimates for interest rate cap derivative financial instruments were based upon the discounted cash flows of known payments plus the option value of each caplet which incorporates market rate forecasts and implied market volatilities. The components of the valuation were observable or could be corroborated by observable market data and, therefore, were classified within Level 2 of the valuation hierarchy. The Company also obtained and compared the reasonableness of the pricing from independent third party valuations. Interest rate swap derivative financial instruments. Fair value estimates for interest rate swap derivative financial instruments were based upon the estimated amounts to settle the contracts considering current interest rates and were calculated using discounted cash flows. The inputs used to determine fair value included the compounded overnight SOFR rate to estimate variable rate cash inflows and the overnight SOFR swap rate to estimate the discount rate. The estimated variable rate cash inflows were compared to the fixed rate outflows and such difference was discounted to a present value to estimate the fair value of the interest rate swaps. The components of the valuation were observable or could be corroborated by observable market data and, therefore, were classified within Level 2 of the valuation hierarchy. The Company also obtained and compared the reasonableness of the pricing from independent third party valuations. The following tables disclose the fair value measurement of assets and liabilities measured at fair value on a recurring basis: Fair Value Measurements (Dollars in thousands) Fair Value March 31, 2024 Quoted Prices Significant Significant Debt securities, available-for-sale U.S. government and federal agency $ 454,817 — 454,817 — U.S. government sponsored enterprises 306,626 — 306,626 — State and local governments 97,382 — 97,382 — Corporate bonds 14,206 — 14,206 — Residential mortgage-backed securities 2,677,651 — 2,677,651 — Commercial mortgage-backed securities 1,078,391 — 1,078,391 — Loans held for sale, at fair value 27,035 — 27,035 — Interest rate caps 4,345 — 4,345 — Interest rate locks 1,032 — 1,032 — Interest rate swap 1,067 — 1,067 — Total assets measured at fair value on a recurring basis $ 4,662,552 — 4,662,552 — TBA hedge $ 124 — 124 — Interest rate swap 2,279 — 2,279 — Total liabilities measured at fair value on a recurring basis $ 2,403 — 2,403 — Fair Value Measurements (Dollars in thousands) Fair Value December 31, 2023 Quoted Prices Significant Significant Debt securities, available-for-sale U.S. government and federal agency $ 455,347 — 455,347 — U.S. government sponsored enterprises 299,219 — 299,219 — State and local governments 98,932 — 98,932 — Corporate bonds 26,253 — 26,253 — Residential mortgage-backed securities 2,811,263 — 2,811,263 — Commercial mortgage-backed securities 1,094,705 — 1,094,705 — Loans held for sale, at fair value 15,691 — 15,691 — Interest rate caps 4,990 — 4,990 — Interest rate locks 604 — 604 — Total assets measured at fair value on a recurring basis $ 4,807,004 — 4,807,004 — TBA hedge $ 350 — 350 — Interest rate swap 17,988 — 17,988 — Total liabilities measured at fair value on a recurring basis $ 18,338 — 18,338 — Non-recurring Measurements The following is a description of the inputs and valuation methodologies used for assets recorded at fair value on a non-recurring basis, as well as the general classification of such assets pursuant to the valuation hierarchy. There have been no significant changes in the valuation techniques during the period ended March 31, 2024. Other real estate owned. OREO is initially recorded at fair value less estimated cost to sell, establishing a new cost basis. OREO is subsequently accounted for at lower of cost or fair value less estimated cost to sell. Estimated fair value of OREO is based on appraisals or evaluations (new or updated). OREO is classified within Level 3 of the fair value hierarchy. Collateral-dependent loans, net of ACL. Fair value estimates of collateral-dependent loans that are individually reviewed are based on the fair value of the collateral, less estimated cost to sell. Collateral-dependent individually reviewed loans are classified within Level 3 of the fair value hierarchy. The Company’s credit department reviews appraisals for OREO and collateral-dependent loans, giving consideration to the highest and best use of the collateral. The appraisal or evaluation (new or updated) is considered the starting point for determining fair value. The valuation techniques used in preparing appraisals or evaluations (new or updated) include the cost approach, income approach, sales comparison approach, or a combination of the preceding valuation techniques. The key inputs used to determine the fair value of the collateral-dependent loans and OREO include selling costs, discounted cash flow rate or capitalization rate, and adjustment to comparables. Valuations and significant inputs obtained by independent sources are reviewed by the Company for accuracy and reasonableness. The Company also considers other factors and events in the environment that may affect the fair value. The appraisals or evaluations (new or updated) are reviewed at least quarterly and more frequently based on current market conditions, including deterioration in a borrower’s financial condition and when property values may be subject to significant volatility. After review and acceptance of the collateral appraisal or evaluation (new or updated), adjustments to the impaired loan or OREO may occur. The Company generally obtains appraisals or evaluations (new or updated) annually. The following tables disclose the fair value measurement of assets with a recorded change during the period resulting from re-measuring the assets at fair value on a non-recurring basis: Fair Value Measurements (Dollars in thousands) Fair Value March 31, 2024 Quoted Prices Significant Significant Collateral-dependent impaired loans, net of ACL $ 1,542 — — 1,542 Total assets measured at fair value on a non-recurring basis $ 1,542 — — 1,542 Fair Value Measurements (Dollars in thousands) Fair Value December 31, 2023 Quoted Prices Significant Significant Other real estate owned $ 166 — — 166 Collateral-dependent impaired loans, net of ACL 1,332 — — 1,332 Total assets measured at fair value on a non-recurring basis $ 1,498 — — 1,498 Non-recurring Measurements Using Significant Unobservable Inputs (Level 3) The following tables present additional quantitative information about assets measured at fair value on a non-recurring basis and for which the Company has utilized Level 3 inputs to determine fair value: Fair Value March 31, 2024 Quantitative Information about Level 3 Fair Value Measurements (Dollars in thousands) Valuation Technique Unobservable Input Range (Weighted-Average) 1 Collateral-dependent impaired loans, net of ACL $ 1,248 Cost approach Selling costs 10.0% - 10.0% (10.0%) 33 Sales comparison approach Selling costs 10.0% - 20.0% (18.4%) 261 Combined approach Selling costs 10.0% - 10.0% (10.0%) $ 1,542 Fair Value December 31, 2023 Quantitative Information about Level 3 Fair Value Measurements (Dollars in thousands) Valuation Technique Unobservable Input Range (Weighted-Average) 1 Other real estate owned $ 166 Sales comparison approach Selling costs 0.0% - 10.0% (8.1%) Collateral-dependent impaired loans, net of ACL $ 1,258 Cost approach Selling costs 10.0% - 10.0% (10.0%) 74 Sales comparison approach Selling Costs 10.0% - 10.0% (10.0%) $ 1,332 ______________________________ 1 The range for selling cost inputs represents reductions to the fair value of the assets. Fair Value of Financial Instruments The following tables present the carrying amounts, estimated fair values and the level within the fair value hierarchy of the Company’s financial instruments not carried at fair value. Receivables and payables due in one year or less, equity securities without readily determinable fair values and deposits with no defined or contractual maturities are excluded. There have been no significant changes in the valuation techniques during the period ended March 31, 2024. Cash and cash equivalents : fair value is estimated at book value. Debt securities, held-to-maturity : fair value for held-to-maturity debt securities is estimated in the same manner as available-for sale debt securities, which is described above. Loans receivable, net of ACL : the loans were fair valued on an individual basis, with consideration given to the loans' underlying characteristics, including account types, remaining terms and balance, interest rates, past delinquencies, current market rates, etc. The model utilizes a discounted cash flow approach to estimate the fair value of the loans using various assumptions such as prepayment speeds, projected default probabilities, losses given defaults, etc. The discounted cash flow approach models the credit losses directly in the projected cash flows. The model applies various assumptions regarding credit, interest, and prepayment risks for the loans based on loan types, payment types and fixed or variable classifications. Term Deposits : fair value of term deposits is estimated by discounting the future cash flows using rates of similar deposits with similar maturities. The market rates used were obtained from an independent third party based on current rates offered by the Company’s regional competitors. FHLB advances: fair value of advances is estimated based on borrowing rates currently available to the Company for advances with similar terms and maturities. FRB borrowing: fair value of borrowings through the FRB is estimated based on borrowing rates currently available to the Company through the FRB Bank Term Funding facility with similar terms and maturities. Repurchase agreements and other borrowed funds : fair value of term repurchase agreements and other term borrowings is estimated based on current repurchase rates and borrowing rates currently available to the Company for repurchases and borrowings with similar terms and maturities. The estimated fair value for overnight repurchase agreements and other borrowings is book value. Subordinated debentures : fair value of the subordinated debt is estimated by discounting the estimated future cash flows using current estimated market rates obtained from an independent third party. Off-balance sheet financial instrument s: unused lines of credit and letters of credit represent the principal categories of off-balance sheet financial instruments. The fair value of commitments is based on fees currently charged to enter into similar agreements, taking into account the remaining terms of the agreements and the counterparties’ credit standing. The fair value of unused lines of credit and letters of credit is not material; therefore, such commitments are not included in the following tables. Fair Value Measurements (Dollars in thousands) Carrying Amount March 31, 2024 Quoted Prices Significant Significant Financial assets Cash and cash equivalents $ 788,660 788,660 — — Debt securities, held-to-maturity 3,451,583 — 3,091,194 — Loans receivable, net of ACL 16,533,723 — — 16,545,822 Total financial assets $ 20,773,966 788,660 3,091,194 16,545,822 Financial liabilities Term deposits $ 3,039,190 — 3,077,983 — FHLB advances 2,140,157 — 2,135,901 — Repurchase agreements and other borrowed funds 1,628,822 — 1,628,822 — Subordinated debentures 132,984 — 121,821 — Total financial liabilities $ 6,941,153 — 6,964,527 — Fair Value Measurements (Dollars in thousands) Carrying Amount December 31, 2023 Quoted Prices Significant Significant Financial assets Cash and cash equivalents $ 1,354,342 1,354,342 — — Debt securities, held-to-maturity 3,502,411 — 3,180,194 — Loans receivable, net of ACL 16,005,325 — — 16,133,681 Total financial assets $ 20,862,078 1,354,342 3,180,194 16,133,681 Financial liabilities Term deposits $ 2,915,393 — 2,955,521 — FRB Bank Term Funding 2,740,000 — 2,738,031 — Repurchase agreements and other borrowed funds 1,568,545 — 1,568,545 — Subordinated debentures 132,943 — 119,768 — Total financial liabilities $ 7,356,881 — 7,381,865 —

Mergers and Acquisitions

Mergers and Acquisitions	3 Months Ended
	Mar. 31, 2024
Business Combinations [Abstract]
Mergers and Acquisitions	Mergers and Acquisitions On January 31, 2024, the Company acquired 100% percent of the outstanding common stock of Community Financial Group, Inc. (“CFGW”) and its wholly-owned subsidiary, Wheatland Bank (“Wheatland”), a community bank based in Spokane, Washington. Wheatland provides banking services to individuals and businesses in Washington with locations in Chelan, Wenatchee, Ellensburg, Yakima, Quincy, Moses Lake, Pasco, Odessa, Davenport, Ritzville, Spokane, and Spokane Valley. Wheatland merged into the Bank and became a new bank division headquartered in Spokane and the Bank’s existing Washington-based division, North Cascades Bank, combined with the new Wheatland division. The preliminary value of the Wheatland acquisition was $93,156,000 and as part of the transaction, the Company issued 2,389,684 shares of its common stock and paid $771,000 in cash in exchange for all of Wheatland’s outstanding shares of common stock. The fair value of the Company shares issued was determined on the basis of the closing market price of the Company’s common stock on the January 31, 2024 acquisition date. The excess of the preliminary fair value of consideration transferred over total identifiable net assets was recorded as goodwill. The goodwill arising from the acquisition consists largely of the synergies and economies of scale expected from combining the operations of the Bank and Wheatland. None of the goodwill is deductible for income tax purposes as the acquisition was accounted for as a tax-free exchange. The assets and liabilities of Wheatland were recorded on the Company’s consolidated statements of financial condition at their preliminary estimated fair values as of the acquisition date and the results of operations have been included in the Company’s consolidated statements of operations since that date. The following table discloses the preliminary fair value estimates of the consideration transferred, the total identifiable net assets acquired and the resulting goodwill arising from the Wheatland acquisition. The Company is continuing to obtain information to determine the fair values of assets acquired and liabilities assumed. (Dollars in thousands) Wheatland Fair value of consideration transferred Fair value of Company shares issued $ 92,385 Cash consideration 771 Total fair value of consideration transferred 93,156 Recognized amounts of identifiable assets acquired and liabilities assumed Identifiable assets acquired Cash and cash equivalents 31,674 Debt securities 187,183 Loans receivable, net of ACL 452,737 Core deposit intangible 1 16,936 Accrued income and other assets 50,760 Total identifiable assets acquired 739,290 Liabilities assumed Deposits 616,955 Borrowings 58,500 Accrued expenses and other liabilities 9,048 Total liabilities assumed 684,503 Total identifiable net assets 54,787 Goodwill recognized $ 38,369 ______________________________ 1 The core deposit intangible for the acquisition was determined to have an estimated life of 10 years. The preliminary fair values of the Wheatland assets acquired include loans with preliminary fair values of $452,740,000. The gross principal and contractual interest due under the Wheatland contracts was $468,882,000. The Company evaluated the loans at the acquisition date and determined there were PCD loans of $1,655,000 with an ACL of $3,000. The Company incurred $5,575,000 of expenses in connection with the Wheatland acquisition during the three months ended March 31, 2024. Mergers and acquisition expenses are included in other expense in the Company's consolidated statements of operations and consist of third-party costs and employee severance expenses. Total income consisting of net interest income and non-interest income of the acquired operations of Wheatland was approximately $5,841,000 and net loss was approximately $7,650,000 from January 31, 2024 to March 31, 2024. The following unaudited pro forma summary presents consolidated information of the Company as if the Wheatland acquisition had occurred on January 1, 2023: Three Months ended (Dollars in thousands) March 31, March 31, Net interest income and non-interest income $ 198,925 220,927 Net income 30,602 62,358

Pay vs Performance Disclosure

Pay vs Performance Disclosure - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Pay vs Performance Disclosure
Net income	$ 32,627	$ 61,211

Insider Trading Arrangements

Insider Trading Arrangements	3 Months Ended
	Mar. 31, 2024
Trading Arrangements, by Individual
Rule 10b5-1 Arrangement Adopted	false
Non-Rule 10b5-1 Arrangement Adopted	false
Rule 10b5-1 Arrangement Terminated	false
Non-Rule 10b5-1 Arrangement Terminated	false

Nature of Operations and Summ_2

Nature of Operations and Summary of Significant Accounting Policies (Policies)	3 Months Ended
	Mar. 31, 2024
Organization, Consolidation and Presentation of Financial Statements [Abstract]
General	In the opinion of management, the accompanying unaudited condensed consolidated financial statements reflect all adjustments necessary for a fair presentation of the results for the interim periods. All such adjustments are of a normal recurring nature. These interim financial statements do not include all of the information and footnotes required by accounting principles generally accepted in the United States of America (“GAAP”) for complete financial statements and they should be read in conjunction with the consolidated financial statements and notes thereto contained in the Company’s Annual Report on Form 10-K for the year ended December 31, 2023. Operating results for the three months ended March 31, 2024 are not necessarily indicative of the results anticipated for the year ending December 31, 2024. The condensed consolidated statement of financial condition of the Company as of December 31, 2023 has been derived from the audited consolidated statements of the Company as of that date. The Company is a defendant in legal proceedings arising in the normal course of business. In the opinion of management, the disposition of pending litigation will not have a material affect on the Company’s consolidated financial position, results of operations or liquidity.
Use of Estimates	Material estimates that are particularly susceptible to significant change include: 1) the determination of the allowance for credit losses (“ACL” or “allowance”) on loans; 2) the valuation of debt securities; 3) the valuation of real estate acquired in connection with foreclosures or in satisfaction of loans; and 4) the evaluation of goodwill impairment. For the determination of the ACL on loans and real estate valuation estimates, management obtains independent appraisals (new or updated) for significant items. Estimates relating to the investment valuations are obtained from independent third parties. Estimates relating to the evaluation of goodwill for impairment are determined based on internal calculations using independent party inputs.
Principles of Consolidation	The consolidated financial statements of the Company include the parent holding company and the Bank, which consists of seventeen bank divisions and a corporate division. The corporate division includes the Bank’s investment portfolio, wholesale borrowings and other centralized functions. The Bank divisions operate under separate names, management teams and advisory directors. The Company considers the Bank to be its sole operating segment as the Bank 1) engages in similar bank business activity from which it earns revenues and incurs expenses; 2) the operating results of the Bank are regularly reviewed by the Chief Executive Officer (“CEO”) (i.e., the chief operating decision maker) who makes decisions about resources to be allocated to the Bank; and 3) financial information is available for the Bank. All significant inter-company transactions have been eliminated in consolidation. The Bank has subsidiary interests in variable interest entities (“VIE”) for which the Bank has both the power to direct the VIE’s significant activities and the obligation to absorb losses or right to receive benefits of the VIE that could potentially be significant to the VIE. These subsidiary interests are included in the Company’s consolidated financial statements. The Bank also has subsidiary interests in VIEs for which the Bank does not have a controlling financial interest and is not the primary beneficiary. These subsidiary interests are not included in the Company’s consolidated financial statements. For additional information on the Bank’s interest in VIEs, see Note 7. The parent holding company owns non-bank subsidiaries that have issued trust preferred securities. The trust subsidiaries are not included in the Company’s consolidated financial statements. The Company's investments in the trust subsidiaries are included in other assets on the Company's statements of financial condition.
Cash, Cash Equivalents and Restricted Cash	Cash and cash equivalents include cash on hand, cash held as demand deposits at various banks and the Federal Reserve Bank (“FRB”), interest bearing deposits, federal funds sold, and liquid investments with original maturities of three months or less. Interest bearing deposits are maintained at other financial institutions as collateral for certain derivative contracts and are considered restricted cash.
Debt Securities	Debt securities for which the Company has the positive intent and ability to hold to maturity are classified as held-to-maturity and are carried at amortized cost. Debt securities held primarily for the purpose of selling in the near term are classified as trading securities and are reported at fair value, with unrealized gains and losses included in income. Debt securities not classified as held-to-maturity or trading are classified as available-for-sale and are reported at fair value with unrealized gains and losses, net of income taxes, as a separate component of other comprehensive income (“OCI”). Premiums and discounts on debt securities are amortized or accreted into income using a method that approximates the interest method. The objective of the interest method is to calculate periodic interest income at a constant effective yield. The Company does not have any debt securities classified as trading securities. When the Company acquires another entity, it records the debt securities at fair value. The Company reviews and analyzes the various risks that may be present within the investment portfolio on an ongoing basis, including market risk, credit risk and liquidity risk. Market risk is the risk to an entity’s financial condition resulting from adverse changes in the value of its holdings arising from movements in interest rates, foreign exchange rates, equity prices or commodity prices. The Company assesses the market risk of individual debt securities as well as the investment portfolio as a whole. Credit risk, broadly defined, is the risk that an issuer or counterparty will fail to perform on an obligation. The credit rating of a security is considered the primary credit quality indicator for debt securities. Liquidity risk refers to the risk that a security will not have an active and efficient market in which the security can be sold. A debt security is investment grade if the issuer has adequate capacity to meet its commitment over the expected life of the investment, i.e., the risk of default is low and full and timely repayment of interest and principal is expected. To determine investment grade status for debt securities, the Company conducts due diligence of the creditworthiness of the issuer or counterparty prior to acquisition and ongoing thereafter consistent with the risk characteristics of the security and the overall risk of the investment portfolio. Credit quality due diligence takes into account the extent to which a security is guaranteed by the U.S. government and other agencies of the U.S. government. The depth of the due diligence is based on the complexity of the structure, the size of the security, and takes into account material positions and specific groups of securities or stratifications for analysis and review of similar risk positions. The due diligence includes consideration of payment performance, collateral adequacy, internal analyses, third party research and analytics, external credit ratings and default statistics. The Company has acquired debt securities through acquisitions and if the securities have more than insignificant credit deterioration since origination, they are designated as purchased credit-deteriorated (“PCD”) securities. An ACL is determined using the same methodology as with other debt securities. The sum of a PCD security’s fair value and associated ACL becomes its initial amortized cost basis. The difference between the initial amortized cost basis and the par value of the debt security is a noncredit discount or premium, which is amortized into interest income over the life of the security. Subsequent changes to the ACL are recorded through provision for credit losses.
Allowance for Credit Losses - Available-for-Sale Debt Securities, Held-to-Maturity Debt Securities and Loans Receivable	For available-for-sale debt securities in an unrealized loss position, the Company first assesses whether it intends to sell, or it is more-likely-than-not that it will be required to sell the security before recovery of its amortized cost basis. If either of the criteria regarding intent or requirement to sell is met, the security’s amortized cost basis is written down to fair value through other expense. For the available-for-sale securities that do not meet the aforementioned criteria, the Company evaluates whether the decline in fair value has resulted from credit losses or other factors. In such assessment, the Company considers the extent to which fair value is less than amortized cost, if there are any changes to the investment grade of the security by a rating agency, and if there are any adverse conditions that impact the security. If this assessment indicates a credit loss exists, the present value of the cash flows expected to be collected from the security is compared to the amortized cost basis of the security. If the present value of the cash flows expected to be collected is less than the amortized cost basis, a potential credit loss exists and an ACL is recorded for the credit loss, limited by the amount that the fair value is less than the amortized cost. Any estimated credit losses that have not been recorded through an ACL are recognized in OCI. The Company has elected to exclude accrued interest from the estimate of credit losses for available-for-sale debt securities. As part of its non-accrual policy, the Company charges-off uncollectable interest at the time it is determined to be uncollectable. Allowance for Credit Losses - Held-to-Maturity Debt Securities For estimating the allowance for held-to-maturity (“HTM”) debt securities that share similar risk characteristics with other securities, such securities are pooled based on major security type. For pools of such securities with similar risk characteristics, the historical lifetime probability of default and severity of loss in the event of default is derived or obtained from external sources and adjusted for the expected effects of reasonable and supportable forecasts over the expected lives of the securities on those historical credit losses. Expected credit losses on securities in the held-to-maturity portfolio that do not share similar risk characteristics with any of the pools of debt securities are individually measured based on net realizable value, or the difference between the discounted value of the expected future cash flows, based on the original effective interest rate, and the recorded amortized cost basis of the securities. The ACL for loans receivable represents management’s estimate of credit losses over the expected contractual life of the loan portfolio. The estimate is determined based on the amortized cost of the loan portfolio including the loan balance adjusted for charge-offs, recoveries, deferred fees and costs, and loan discount and premiums. Recoveries are included only to the extent that such amounts were previously charged-off. The Company has elected to exclude accrued interest from the estimate of credit losses for loans. Determining the adequacy of the allowance is complex and requires a high degree of judgment by management about the effect of matters that are inherently uncertain. Subsequent evaluations of the then-existing loan portfolio, in light of the factors then prevailing, may result in significant changes in the allowance in those future periods. The allowance is increased for estimated credit losses which are recorded as expense. The portion of loans and overdraft balances determined by management to be uncollectable are charged-off as a reduction to the allowance and recoveries of amounts previously charged-off increase the allowance. The Company’s charge-off policy is consistent with bank regulatory standards. Consumer loans generally are charged-off when the loan becomes over 120 days delinquent. Real estate acquired as a result of foreclosure or by deed-in-lieu of foreclosure is classified as other real estate owned (“OREO”) until such time as it is sold. The expected credit loss estimate process involves procedures to consider the unique characteristics of each of the Company’s loan portfolio segments, which consist of residential real estate, commercial real estate, other commercial, home equity, and other consumer loans. When computing the allowance levels, credit loss assumptions are estimated using a model that categorizes loan pools based on loss history, credit and risk characteristics, including current conditions and reasonable and supportable forecasts about the future. The Company has determined a four consecutive quarter forecasting period is a reasonable and supportable period. Expected credit loss for periods beyond reasonable and supportable forecast periods are determined based on a reversion method which reverts back to historical loss estimates over a four consecutive quarter period on a straight-line basis. Credit quality is assessed and monitored by evaluating various attributes and the results of those evaluations are utilized in underwriting new loans and the process for estimating the expected credit losses. The following paragraphs describe the risk characteristics relevant to each portfolio segment. Residential Real Estate. Residential real estate loans are secured by owner-occupied 1-4 family residences. Repayment of these loans is primarily dependent on the personal income and credit rating of the borrowers. Credit risk in these loans is impacted by economic conditions within the Company’s market areas that affect the value of the residential property securing the loans and affect the borrowers' personal incomes. Mitigating risk factors for this loan segment include a large number of borrowers, geographic dispersion of market areas and the loans are originated for relatively smaller amounts. Commercial Real Estate . Commercial real estate loans typically involve larger principal amounts, and repayment of these loans is generally dependent on the successful operation of the property securing the loan and/or the business conducted on the property securing the loan. Credit risk in these loans is impacted by the creditworthiness of a borrower, valuation of the property securing the loan and conditions within the local economies in the Company’s diverse geographic market areas. Commercial . Commercial loans consist of loans to commercial customers for use in financing working capital needs, equipment purchases and business expansions. The loans in this category are repaid primarily from the cash flow of a borrower’s principal business operation. Credit risk in these loans is driven by creditworthiness of a borrower and the economic conditions that impact the cash flow stability from business operations across the Company’s diverse geographic market areas. Home Equity . Home equity loans consist of junior lien mortgages and first and junior lien lines of credit (revolving open-end and amortizing closed-end) secured by owner-occupied 1-4 family residences. Repayment of these loans is primarily dependent on the personal income and credit rating of the borrowers. Credit risk in these loans is impacted by economic conditions within the Company’s market areas that affect the value of the residential property securing the loans and affect the borrowers' personal incomes. Mitigating risk factors for this loan segment are a large number of borrowers, geographic dispersion of market areas and the loans are originated for terms that range from 10 to 15 years. Other Consumer . The other consumer loan portfolio consists of various short-term loans such as automobile loans and loans for other personal purposes. Repayment of these loans is primarily dependent on the personal income of the borrowers. Credit risk is driven by consumer economic factors (such as unemployment and general economic conditions in the Company’s diverse geographic market areas) and the creditworthiness of a borrower. The allowance is impacted by loan volumes, delinquency status, credit ratings, historical loss experiences, estimated prepayment speeds, weighted average lives and other conditions influencing loss expectations, such as reasonable and supportable forecasts of economic conditions. The methodology for estimating the amount of expected credit losses reported in the allowance has two basic components: 1) individual loans that do not share similar risk characteristics with other loans and the measurement of expected credit losses for such individual loans; and 2) the expected credit losses for pools of loans that share similar risk characteristics. Loans that do not Share Similar Risk Characteristics with Other Loans. For a loan that does not share similar risk characteristics with other loans, expected credit loss is measured based on the net realizable value, that is, the difference between the discounted value of the expected future cash flows, based on the original effective interest rate, and the amortized cost basis of the loan. For these loans, the expected credit loss is equal to the amount by which the net realizable value of the loan is less than the amortized cost basis of the loan (which is net of previous charge-offs and deferred loan fees and costs), except when the loan is collateral-dependent, that is, when foreclosure is probable or the borrower is experiencing financial difficulty and repayment is expected to be provided substantially through the operation or sale of the collateral. In these cases, expected credit loss is measured as the difference between the amortized cost basis of the loan and the fair value of the collateral. The fair value of the collateral is adjusted for the estimated cost to sell if repayment or satisfaction of a loan is dependent on the sale (rather than only on the operation) of the collateral. The Company has determined that non-accrual loans do not share similar risk characteristics with other loans and these loans are individually evaluated for estimated allowance for credit losses. The Company, through its credit monitoring process, may also identify other loans that do not share similar risk characteristics and individually evaluate such loans. The starting point for determining the fair value of collateral is to obtain external appraisals or evaluations (new or updated). The valuation techniques used in preparing appraisals or evaluations (new or updated) include the cost approach, income approach, sales comparison approach, or a combination of the preceding valuation techniques. The Company’s credit department reviews appraisals, giving consideration to the highest and best use of the collateral. The appraisals or evaluations (new or updated) are reviewed at least quarterly and more frequently based on current market conditions, including deterioration in a borrower’s financial condition and when property values may be subject to significant volatility. Adjustments may be made to the fair value of the collateral after review and acceptance of the collateral appraisal or evaluation (new or updated). Loans that Share Similar Risk Characteristics with other Loans. For estimating the allowance for loans that share similar risk characteristics with other loans, such loans are segregated into loan segments. Loans are designated into loan segments based on loans pooled by product types and similar risk characteristics or areas of risk concentration. In determining the ACL, the Company derives an estimated credit loss assumption from a model that categorizes loan pools based on loan type which is further segregated by the credit quality indicators. This model calculates an expected loss percentage for each loan segment by considering the non-discounted simple annual average historical loss rate of each loan segment (calculated through an “open pool” method), multiplying the loss rate by the amortized loan balance and incorporating that segment’s internally generated prepayment speed assumption and contractually scheduled remaining principal pay downs on a loan level basis. The annual historical loss rates are adjusted over a reasonable economic forecast period by a multiplier that is calculated based upon current national economic forecasts as a proportion of each segment’s historical average loss levels. The Company will then revert from the economic forecast period back to the historical average loss rate in a straight-line basis. After the reversion period, the loans will be assumed to experience their historical loss rate for the remainder of their contractual lives. The model applies the expected loss rate over the projected cash flows at the individual loan level and then aggregates the losses by loan segment in determining their quantitative allowance. The Company will also include qualitative adjustments to adjust the ACL on loan segments to the extent the current or future market conditions are believed to vary substantially from historical conditions in regards to: • lending policies and procedures; • international, national, regional and local economic business conditions, developments, or environmental conditions that affect the collectability of the portfolio, including the condition of various markets; • the nature and volume of the loan portfolio including the terms of the loans; • the experience, ability, and depth of the lending management and other relevant staff; • the volume and severity of past due and adversely classified or graded loans and the volume of non-accrual loans; • the quality of our loan review system; • the value of underlying collateral for collateralized loans; • the existence and effect of any concentrations of credit, and changes in the level of concentrations; and • the effect of external factors such as competition and legal and regulatory requirements on the level of estimated credit losses in the existing portfolio. The Company regularly reviews loans in the portfolio to assess credit quality indicators and to determine the appropriate loan classification and grading in accordance with applicable bank regulations. The primary credit quality indicator for residential, home equity and other consumer loans is the days past due status, which consists of the following categories: 1) performing loans; 2) 30 to 89 days past due loans; and 3) non-accrual and 90 days or more past due loans. The primary credit quality indicator for commercial real estate and commercial loans is the Company’s internal risk rating system, which includes the following categories: 1) pass loans; 2) special mention loans; 3) substandard loans; and 4) doubtful or loss loans. Such credit quality indicators are regularly monitored and incorporated into the Company’s allowance estimate. The following paragraphs further define the internal risk ratings for commercial real estate and commercial loans. Pass Loans. These ratings represent loans that are of acceptable, good or excellent quality with very limited to no risk. Loans that do not have one of the following ratings are considered pass loans. Special Mention Loans. These ratings represent loans that are designated as special mention per the regulatory definition. Special mention loans are currently protected but are potentially weak. The credit risk may be relatively minor yet constitute an undue and unwarranted risk in light of the circumstances surrounding a specific loan. The rating may be used to identify credit with potential weaknesses that if not corrected may weaken the loan to the point of inadequately protecting the Bank’s credit position. Examples include a lack of supervision, inadequate loan agreement, condition, or control of collateral, incomplete, or improper documentation, deviations from lending policy, and adverse trends in operations or economic conditions. Substandard Loans. This rating represents loans that are inadequately protected by the current sound worth and paying capacity of the obligor or of the collateral pledged. A loan so classified must have a well-defined weakness that jeopardizes the liquidation of the debt. These loans are characterized by the distinct possibility that the Bank will sustain some loss if the deficiencies are not corrected. Loss potential, while existing in the aggregated amount of substandard loans, does not have to exist in an individual loan classified substandard. Doubtful/Loss Loans. A loan classified as doubtful has the characteristics that make collection in full, on the basis of currently existing facts, conditions, and values, highly improbable. The possibility of loss is extremely high, but because of pending factors, which may work to the advantage and strengthening of the loan, its classification as loss is deferred until its more exact status may be determined. Pending factors include proposed merger, acquisition, or liquidation procedures, capital injection, perfecting liens on additional collateral and refinancing plans. Loans are classified as loss when they are deemed to be not collectible and of such little value that continuance as an active asset of the Bank is not warranted. Loans classified as loss must be charged-off. Assignment of this classification does not mean that an asset has absolutely no recovery or salvage value, but that it is not practical or desirable to defer writing off a basically worthless asset, even though partial recovery may be attained in the future. Modifications On January 1, 2023, the Company adopted FASB ASU 2022-02, Financial Instruments - Credit Losses, Troubled Debt Restructurings and Vintage Disclosures, which eliminated the accounting guidance for troubled debt restructurings (“TDRs”) by creditors in Accounting Standard Codification (“ASC”) Subtopic 310-40, and enhanced the disclosure requirements for certain loan refinancing and restructures by creditors when a borrower is experiencing financial difficulty. The company identifies modifications to borrowers experiencing financial difficulty (“MBFD”) as a loan that has been modified for the borrower that is experiencing financial difficulties. The Company considers some of the indicators that a borrower is experiencing financial difficulty to be: currently in payment default on any of their debt, declaring bankruptcy, going concern, borrower’s securities have been delisted, and other indicators of inability to meet obligations. This list does not include all potential indicators of a borrower’s financial difficulties. The allowance for credit losses on a loans that are considered MBFD’s are measured using the same method as all other loans held for investment. Prior to the adoption of this guidance, restructured loans were considered to be a TDR if the creditor, for economic or legal reasons related to the debtor’s financial difficulties, grants a concession to the debtor that it would have not otherwise considered. The allowance for credit losses on a TDR were measured using the same method as all other loans held for investment. Allowance for Credit Losses - Off-Balance Sheet Credit Exposures The Company maintains a separate allowance for credit losses for off-balance sheet credit exposures, including unfunded loan commitments. Such ACL is included in other liabilities on the Company’s statements of financial condition. The Company estimates the amount of expected losses by calculating a commitment usage factor over the contractual period for exposures and applying the loss factors used in the allowance for credit loss methodology to the results of the usage calculation to estimate the liability for credit losses related to unfunded commitments for each loan segment. No credit loss estimate is reported for off-balance sheet credit exposures that are unconditionally cancellable by the Bank or for unfunded amounts under such arrangements that may be drawn prior to the cancellation of the arrangement. Provision for Credit Losses
Loans Held for Sale	Loans held for sale generally consist of long-term, fixed rate, conforming, single-family residential real estate loans intended to be sold on the secondary market. Loans held for sale are recorded at fair value and may or may not be sold with servicing rights released. Changes in fair value are recognized in non-interest income. Fair value elections are made at the time of origination based on the Company’s fair value election policy.
Loans Receivable	The Company’s loan segments or classes are based on the purpose of the loan and consist of residential real estate, commercial real estate, other commercial, home equity, and other consumer loans. Loans that are intended at origination to be held-to-maturity are reported at the unpaid principal balance less net charge-offs and adjusted for deferred fees and costs on originated loans and unamortized premiums or discounts on acquired loans. Interest income is accrued on the unpaid principal balance. Fees and costs on originated loans and premiums or discounts on acquired loans are deferred and subsequently amortized or accreted as a yield adjustment over the expected life of the loan utilizing the interest or straight-line methods. The interest method is utilized for loans with scheduled payment terms and the objective is to calculate periodic interest income at a constant effective yield. The straight-line method is utilized for revolving lines of credit or loans with no scheduled payment terms. When a loan is paid off prior to maturity, the remaining unamortized fees and costs on originated loans and unamortized premiums or discounts on acquired loans are immediately recognized as interest income. Loans that are 30 days or more past due based on payments received and applied to the loan are considered delinquent. Loans are designated non-accrual and the accrual of interest is discontinued when the collection of the contractual principal or interest is unlikely. A loan is typically placed on non-accrual when principal or interest is due and has remained unpaid for 90 days or more. When a loan is placed on non-accrual status, interest previously accrued but not collected is reversed against current period interest income. Subsequent payments on non-accrual loans are applied to the outstanding principal balance if doubt remains as to the ultimate collectability of the loan. Interest accruals are not resumed on partially charged-off impaired loans. For other loans on non-accrual, interest accruals are resumed on such loans only when they are brought fully current with respect to interest and principal and when, in the judgment of management, the loans are estimated to be fully collectible as to both principal and interest. The Company has acquired loans through acquisitions, some of which have experienced more than insignificant credit deterioration since origination. The Company considers all acquired non-accrual loans to be PCD loans. In addition, the Company considers loans accruing 90 days or more past due or substandard loans to be PCD loans. An ACL is determined using the same methodology as other loans held for investment. The ACL determined on a collective basis is allocated to individual loans. The sum of a loan’s fair value and ACL becomes the initial amortized cost basis. The difference between the initial amortized cost basis and the par value of the loan is a noncredit discount or premium, which is amortized into interest income over the life of the loan. Subsequent changes to the ACL are recorded through provision for credit losses. For residential real estate loans that are sold with servicing retained, servicing rights are initially recorded at fair value in other assets and gain on sale of loans. Fair value is based on market prices for comparable mortgage servicing contracts. The servicing asset is subsequently measured using the amortization method which requires the servicing rights to be amortized into non-interest income in proportion to, and over the period of, the estimated future net servicing income of the underlying loans. Loan servicing rights are evaluated for impairment based upon the fair value of the servicing rights compared to the carrying value. Impairment is recognized through a valuation allowance, to the extent that fair value is less than the carrying value. If the Company later determines that all or a portion of the impairment no longer exists, a reduction in the valuation allowance may be recorded. Changes in the valuation allowance are recorded in other income. The fair value of the servicing assets are subject to significant fluctuations as a result of changes in estimated actual prepayment speeds and default rates and losses.
Premises and Equipment	Premises and equipment are accounted for at cost less depreciation. Depreciation is computed on a straight-line method over the estimated useful lives or the term of the related lease. The estimated useful life for office buildings is 15 to 40 years and the estimated useful life for furniture, fixtures, and equipment is 3 to 10 years. Interest is capitalized for any significant building projects.
Lessee Leases	The Company leases certain land, premises and equipment from third parties. A lessee lease is classified as an operating lease unless it meets certain criteria (e.g., lease contains option to purchase that Company is reasonably certain to exercise), in which case it is classified as a finance lease. These leases are included in net premises and equipment as right-of-use (“ROU”) assets. The operating leases have other liabilities on the Company’s statements of financial condition and lease expense for lease payments is recognized on a straight-line basis over the lease term. The finance leases have liabilities that are included in other borrowed funds on the Company’s statements of financial condition. ROU assets and liabilities are recognized at the lease commencement date based on the present value of lease payments over the lease term. An ROU asset represents the right to use the underlying asset for the lease term and also includes any direct costs and payments made prior to lease commencement and excludes lease incentives. When an implicit rate is not available, an incremental borrowing rate based on the information available at commencement date is used in determining the present value of the lease payments. A lease term may include an option to extend or terminate the lease when it is reasonably certain the option will be exercised. The Company accounts for lease and non-lease components (e.g., common-area maintenance) together as a single combined lease component for all asset classes. The Company has elected to recognize payments for short-term leases of 12 months or less on a straight-line basis over the lease term, and exclude these leases from the Company’s statements of financial condition. Renewal and termination options are considered when determining short-term leases. Leases are accounted for on an individual lease level.
Lessor Leases	The Company also leases certain premises and equipment to third parties. A lessor lease is classified as an operating lease unless it meets certain criteria that would classify it as either a sales-type lease or a direct financing lease.
Other Real Estate Owned	Property acquired by foreclosure or deed-in-lieu of foreclosure is initially recorded at fair value, less estimated selling cost, at acquisition date (i.e., cost of the property). The Company is considered to have received physical possession of residential real estate property collateralizing a consumer mortgage loan upon the occurrence of either the Company obtaining legal title to the property or the borrower conveying all interest in the property through a deed-in-lieu or similar agreement. Fair value is determined as the amount that could be reasonably expected in a current sale between a willing buyer and a willing seller in an orderly transaction between market participants at the measurement date. Subsequent to the initial acquisition, if the fair value of the asset, less estimated selling cost, is less than the cost of the property, a loss is recognized in other expense and the asset carrying value is reduced. Gain or loss on disposition of OREO is recorded in non-interest income or non-interest expense, respectively. In determining the fair value of the properties on the date of transfer and any subsequent estimated losses of net realizable value, the fair value of other real estate acquired by foreclosure or deed-in-lieu of foreclosure is determined primarily based upon appraisal or evaluation of the underlying property value.
Business Combinations	Acquisition accounting requires the total purchase price to be allocated to the estimated fair values of assets acquired and liabilities assumed, including certain intangible assets. Goodwill is recorded if the purchase price exceeds the net fair value of assets acquired and a bargain purchase gain is recorded in other income if the net fair value of assets acquired exceeds the purchase price. Adjustment of the allocated purchase price may be related to fair value estimates for which all information has not been obtained of the acquired entity known or discovered during the allocation period, the period of time required to identify and measure the fair values of the assets and liabilities acquired in the business combination. The allocation period is generally limited to one year following consummation of a business combination.
Intangible Assets	Core deposit intangible represents the intangible value of depositor relationships resulting from deposit liabilities assumed in acquisitions and is amortized using an accelerated method based on an estimated runoff of the related deposits. The core deposit intangible is evaluated for impairment and recoverability whenever events or changes in circumstances indicate that its carrying amount may not be recoverable, with any changes in estimated useful life accounted for prospectively over the revised remaining life. The Company tests goodwill for impairment at the reporting unit level annually during the third quarter. The Company has identified that each of the Bank divisions are reporting units (i.e., components of the Bank’s operating segment) given that each division has a separate management team that regularly reviews its respective division financial information; however, the reporting units are aggregated into a single reporting unit due to the reporting units having similar economic characteristics. The goodwill of a reporting unit is tested for impairment between annual tests if an event occurs or circumstances change that would more-likely-than-not reduce the fair value of a reporting unit below its carrying amount. Examples of events and circumstances that could trigger the need for interim impairment testing include: • a significant change in legal factors or in the business climate; • an adverse action or assessment by a regulator; • unanticipated competition; • a loss of key personnel; • a more-likely-than-not expectation that a reporting unit or a significant portion of a reporting unit will be sold or otherwise disposed of; and • the testing for recoverability of a significant asset group within a reporting unit.
Equity Securities	Non-marketable equity securities primarily consist of Federal Home Loan Bank (“FHLB”) stock. FHLB stock is restricted because such stock may only be sold to FHLB at its par value. Due to restrictive terms, and the lack of a readily determinable fair value, FHLB stock is carried at cost and evaluated for impairment. The investments in FHLB stock are required investments related to the Company’s borrowings from FHLB. FHLB obtains its funding primarily through issuance of consolidated obligations of the FHLB system. The U.S. government does not guarantee these obligations, and each of the regional FHLBs is jointly and severally liable for repayment of each other’s debt.
Marketable Securities	The Company also has an insignificant amount of equity securities that are included in other assets on the Company’s statements of financial condition. Equity securities with readily determinable fair values are measured at fair value and changes in fair value are recognized in other income. Equity securities without readily determinable fair values are carried at cost, minus impairment, if any, plus or minus changes resulting from observable price changes in orderly transactions for the identical or a similar investment.
Other Borrowings	Borrowings of the Company’s consolidated variable interest entities and finance lease arrangements are included in other borrowings.
Bank-Owned Life Insurance	The Company maintains bank-owned life insurance policies on certain current and former employees and directors, which are recorded at their cash surrender values as determined by the insurance carriers. The appreciation in the cash surrender value of the policies is recognized as a component of other non-interest income in the Company’s statements of operations.
Derivatives and Hedging Activities	The Company is exposed to certain risks relating to its ongoing operations. The primary risk managed by using derivative instruments is interest rate risk. Interest rate cap contracts have been entered into to manage interest rate risk associated with variable rate borrowings and were designated as cash flow hedges. Interest rate swap contracts have been entered into to manage interest rate risk associated with fixed rate debt securities and were designated as fair value hedges. The Company does not enter into derivative instruments for trading or speculative purposes. The fair value hedges and cash flow hedges were recognized as other assets or other liabilities on the Company’s statements of financial condition and were measured at fair value. For the fair value hedges, the gain or loss on the derivative, as well as the offsetting loss or gain on the hedged item attributable to the hedged risk, are recognized in current earnings as fair values change. For a cash flow hedge, the gain or loss on the derivative is reported in other comprehensive income and is reclassified into earnings in the same periods during which the hedged transaction affects earnings. Cash flows resulting from the fair value hedges and cash flow hedges were classified in the Company’s cash flow statement in the same category as the cash flows of the items being hedged. The Company formally documents the relationship between derivatives and hedged items, as well as the risk-management objective and the strategy for undertaking hedge transactions at the inception of the hedging relationship. This documentation includes linking fair value or cash flow hedges to specific assets and liabilities on the balance sheet or to specific firm commitments or forecasted transactions. The Company also formally assesses, both at the hedge’s inception and on an ongoing basis, whether the derivative instruments that are designated are highly effective in offsetting changes in fair values or cash flows of the hedged items. The Company has elected not to offset the fair value amounts recognized for derivative instruments and the fair value amounts recognized for the right to reclaim cash collateral arising from derivative instruments recognized at fair value executed with the same counterparty under a master netting arrangement. Loan interest rate lock commitments. Fair value estimates for loan interest rate lock commitments were based upon the estimated sales price, origination fees, direct costs, interest rate changes, etc. and were obtained from an independent third party. The components of the valuation were observable or could be corroborated by observable market data and, therefore, were classified within Level 2 of the valuation hierarchy. Forward commitments to sell TBA securities. Forward commitments to sell TBA securities are used to economically hedge the interest rate risk associated with certain loan commitments. The fair value estimates for the TBA commitments were based upon the estimated sale of the TBA hedge obtained from an independent third party. The components of the valuation were observable or could be corroborated by observable market data and, therefore, were classified within Level 2 of the valuation hierarchy. Interest rate cap derivative financial instruments. Fair value estimates for interest rate cap derivative financial instruments were based upon the discounted cash flows of known payments plus the option value of each caplet which incorporates market rate forecasts and implied market volatilities. The components of the valuation were observable or could be corroborated by observable market data and, therefore, were classified within Level 2 of the valuation hierarchy. The Company also obtained and compared the reasonableness of the pricing from independent third party valuations. Interest rate swap derivative financial instruments. Fair value estimates for interest rate swap derivative financial instruments were based upon the estimated amounts to settle the contracts considering current interest rates and were calculated using discounted cash flows. The inputs used to determine fair value included the compounded overnight SOFR rate to estimate variable rate cash inflows and the overnight SOFR swap rate to estimate the discount rate. The estimated variable rate cash inflows were compared to the fixed rate outflows and such difference was discounted to a present value to estimate the fair value of the interest rate swaps. The components of the valuation were observable or could be corroborated by observable market data and, therefore, were classified within Level 2 of the valuation hierarchy. The Company also obtained and compared the reasonableness of the pricing from independent third party valuations.
Revenue Recognition	The Company recognizes revenue when services or products are transferred to customers in an amount that reflects the consideration to which the Company expects to be entitled. The Company’s principal source of revenue is interest income from debt securities and loans. Revenue from contracts with customers within the scope of ASC Topic 606 was $22,151,000 and $20,879,000 for the three months ended March 31, 2024 and 2023, respectively, and largely consisted of revenue from service charges and other fees from deposits (e.g., overdraft fees, ATM fees, debit card fees). Due to the short-term nature of the Company’s contracts with customers, an insignificant amount of receivables related to such revenue was recorded at March 31, 2024 and December 31, 2023 and there were no impairment losses recognized. Policies specific to revenue from contracts with customers include the following: Service Charges. Revenue from service charges consists of service charges and fees on deposit accounts under depository agreements with customers to provide access to deposited funds and, when applicable, pay interest on deposits. Service charges on deposit accounts may be transactional or non-transactional in nature. Transactional service charges occur in the form of a service or penalty and are charged upon the occurrence of an event (e.g., overdraft fees, ATM fees, wire transfer fees). Transactional service charges are recognized as services are delivered to and consumed by the customer, or as penalty fees are charged. Non-transactional service charges are charges that are based on a broader service, such as account maintenance fees and dormancy fees, and are recognized on a monthly basis. Debit Card Fees. Revenue from debit card fees includes interchange fee income from debit cards processed through card association networks. Interchange fees represent a portion of a transaction amount that the Company and other involved parties retain to compensate themselves for giving the cardholder immediate access to funds. Interchange rates are generally set by the card association networks and are based on purchase volumes and other factors. The Company records interchange fees as services are provided.
Accounting Guidance Adopted in 2024 and Accounting Guidance Pending Adoption in 2024	The ASC is the Financial Accounting Standards Board (“FASB”) officially recognized source of authoritative GAAP applicable to all public and non-public non-governmental entities. Rules and interpretive releases of the Securities and Exchange Commission (“SEC”) under the authority of the federal securities laws are also sources of authoritative GAAP for the Company as an SEC registrant. All other accounting literature is non-authoritative. The following provides a description of a recently adopted Accounting Standards Updates (“ASU”) that could have a material effect on the Company’s financial position or results of operations. ASU 2023-02 - Investments Equity Method and Joint Ventures. In March 2023, FASB amended Topic ASC 323 relating to accounting for investments in tax credit structures using the proportional amortization method. The amendments in this Update allow reporting entities to consistently account for equity investments made primarily for the purpose of receiving income tax credits and other income tax benefits. Previously, the accounting standards limited the proportional amortization method to account for qualifying investment in low-income-housing tax credit structures. The proportional amortization method results in the cost of the investment being amortized in proportion to the income tax credits and other income tax benefits received, with the amortization of the investment and the tax credits being presented net in the income statement as a component of income tax expense (benefit). The amendments in this Update permit an entity to elect to account for their tax equity investments, regardless of the tax credit program from which the income tax credits are received, using the proportional amortization method if certain conditions are met. The amendments are effective for public business entities beginning with the first interim and annual reporting periods after December 15, 2023. The Company adopted the amendments beginning January 1, 2024 for each tax credit program. The Company adjusted its processes and procedures related to the amendments and it did not have a material impact to the Company’s financial position and results of operations. Accounting Guidance Pending Adoption in 2024 The following provides a description of a recently issued but not yet effective ASU that could have a material effect on the Company’s financial position or results of operations. ASU 2023-09 - Income Tax Disclosures. In December 2023, FASB amended topic 740 related to certain income tax disclosures. The amendment provides updates related to the rate reconciliation and income taxes paid disclosures to improve transparency of income disclosures by requiring (1) consistent categories and greater disaggregation of information in the rate reconciliation and (2) income taxes paid disaggregated by jurisdiction. Other amendments in the Update improve the effectiveness and comparability of disclosures and remove disclosures that are no longer considered cost beneficial or relevant. The amendments are effective for public business entities beginning with the first annual reporting period after December 15, 2024 with early adoption permitted in any annual period. The amendments in this Update should be applied on a prospective basis and retrospective application is permitted. The Company is currently evaluating the impact of this Update, but does not expect the adoption of this guidance to have a material impact to the financial statements, including related disclosures, or significant impact on its current processes.
Fair Value Measurement	Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. There is a fair value hierarchy which requires an entity to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value. The three levels of inputs that may be used to measure fair value are as follows: Level 1 Quoted prices in active markets for identical assets or liabilities Level 2 Observable inputs other than Level 1 prices, such as quoted prices for similar assets or liabilities; quoted prices in markets that are not active; or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets or liabilities Level 3 Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities Transfers in and out of Level 1 (quoted prices in active markets), Level 2 (significant other observable inputs) and Level 3 (significant unobservable inputs) are recognized on the actual transfer date. There were no transfers between fair value hierarchy levels during the three month periods ended March 31, 2024 and 2023. Recurring Measurements The following is a description of the inputs and valuation methodologies used for assets and liabilities measured at fair value on a recurring basis, as well as the general classification of such assets and liabilities pursuant to the valuation hierarchy. There have been no significant changes in the valuation techniques during the period ended March 31, 2024. Non-recurring Measurements The following is a description of the inputs and valuation methodologies used for assets recorded at fair value on a non-recurring basis, as well as the general classification of such assets pursuant to the valuation hierarchy. There have been no significant changes in the valuation techniques during the period ended March 31, 2024. Other real estate owned. OREO is initially recorded at fair value less estimated cost to sell, establishing a new cost basis. OREO is subsequently accounted for at lower of cost or fair value less estimated cost to sell. Estimated fair value of OREO is based on appraisals or evaluations (new or updated). OREO is classified within Level 3 of the fair value hierarchy. Collateral-dependent loans, net of ACL. Fair value estimates of collateral-dependent loans that are individually reviewed are based on the fair value of the collateral, less estimated cost to sell. Collateral-dependent individually reviewed loans are classified within Level 3 of the fair value hierarchy. The Company’s credit department reviews appraisals for OREO and collateral-dependent loans, giving consideration to the highest and best use of the collateral. The appraisal or evaluation (new or updated) is considered the starting point for determining fair value. The valuation techniques used in preparing appraisals or evaluations (new or updated) include the cost approach, income approach, sales comparison approach, or a combination of the preceding valuation techniques. The key inputs used to determine the fair value of the collateral-dependent loans and OREO include selling costs, discounted cash flow rate or capitalization rate, and adjustment to comparables. Valuations and significant inputs obtained by independent sources are reviewed by the Company for accuracy and reasonableness. The Company also considers other factors and events in the environment that may affect the fair value. The appraisals or evaluations (new or updated) are reviewed at least quarterly and more frequently based on current market conditions, including deterioration in a borrower’s financial condition and when property values may be subject to significant volatility. After review and acceptance of the collateral appraisal or evaluation (new or updated), adjustments to the impaired loan or OREO may occur. The Company generally obtains appraisals or evaluations (new or updated) annually.

Nature of Operations and Summ_3

Nature of Operations and Summary of Significant Accounting Policies (Tables)	3 Months Ended
	Mar. 31, 2024
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Provision for credit losses	The following table presents the provision for credit losses on the loan portfolio and off-balance sheet exposures: Three Months ended (Dollars in thousands) March 31, March 31, Provision for credit loss loans $ 9,091 6,260 Provision for credit loss unfunded (842) (790) Total provision for credit losses $ 8,249 5,470 Three Months ended March 31, 2024 (Dollars in thousands) Total Residential Real Estate Commercial Real Estate Other Commercial Home Equity Other Consumer Balance at beginning of period $ 192,757 22,325 130,924 21,194 11,766 6,548 Acquisitions 3 — 3 — — — Provision for credit losses 9,091 1,837 4,207 2,293 (764) 1,518 Charge-offs (4,295) — — (1,932) (25) (2,338) Recoveries 1,223 4 19 539 22 639 Balance at end of period $ 198,779 24,166 135,153 22,094 10,999 6,367 Three Months ended March 31, 2023 (Dollars in thousands) Total Residential Real Estate Commercial Real Estate Other Commercial Home Equity Other Consumer Balance at beginning of period $ 182,283 19,683 125,816 21,454 10,759 4,571 Provision for credit losses 6,260 293 4,704 (121) (230) 1,614 Charge-offs (3,293) (5) (347) (772) (4) (2,165) Recoveries 1,354 3 80 603 45 623 Balance at end of period $ 186,604 19,974 130,253 21,164 10,570 4,643

Debt Securities (Tables)

Debt Securities (Tables)	3 Months Ended
	Mar. 31, 2024
Investments, Debt and Equity Securities [Abstract]
Amortized cost, gross unrealized gains and losses and fair value of debt securities	The following tables present the amortized cost, the gross unrealized gains and losses and the fair value of the Company’s debt securities: March 31, 2024 (Dollars in thousands) Amortized Gross Gross Fair Available-for-sale U.S. government and federal agency $ 484,765 9 (29,957) 454,817 U.S. government sponsored enterprises 329,392 — (22,766) 306,626 State and local governments 101,090 74 (3,782) 97,382 Corporate bonds 14,881 — (675) 14,206 Residential mortgage-backed securities 3,028,348 3 (350,700) 2,677,651 Commercial mortgage-backed securities 1,166,124 290 (88,023) 1,078,391 Total available-for-sale $ 5,124,600 376 (495,903) 4,629,073 Held-to-maturity U.S. government and federal agency 854,791 — (71,911) 782,880 State and local governments 1,641,551 1,344 (205,613) 1,437,282 Residential mortgage-backed securities 955,241 — (84,209) 871,032 Total held-to-maturity 3,451,583 1,344 (361,733) 3,091,194 Total debt securities $ 8,576,183 1,720 (857,636) 7,720,267 December 31, 2023 (Dollars in thousands) Amortized Gross Gross Fair Available-for-sale U.S. government and federal agency $ 485,005 11 (29,669) 455,347 U.S. government sponsored enterprises 321,993 — (22,774) 299,219 State and local governments 101,903 302 (3,273) 98,932 Corporate bonds 27,007 2 (756) 26,253 Residential mortgage-backed securities 3,166,589 7 (355,333) 2,811,263 Commercial mortgage-backed securities 1,180,756 519 (86,570) 1,094,705 Total available-for-sale $ 5,283,253 841 (498,375) 4,785,719 Held-to-maturity U.S. government and federal agency 853,273 — (65,472) 787,801 State and local governments 1,650,000 2,843 (181,192) 1,471,651 Residential mortgage-backed securities 999,138 — (78,396) 920,742 Total held-to-maturity 3,502,411 2,843 (325,060) 3,180,194 Total debt securities $ 8,785,664 3,684 (823,435) 7,965,913
Amortized cost and fair value of securities by contractual maturity	The following table presents the amortized cost and fair value of available-for-sale and held-to-maturity debt securities by contractual maturity at March 31, 2024. Actual maturities may differ from expected or contractual maturities since some issuers have the right to prepay obligations with or without prepayment penalties. March 31, 2024 Available-for-Sale Held-to-Maturity (Dollars in thousands) Amortized Cost Fair Value Amortized Cost Fair Value Due within one year $ 11,544 11,527 5,212 5,194 Due after one year through five years 846,883 793,437 934,210 860,793 Due after five years through ten years 33,140 32,114 181,452 173,245 Due after ten years 38,561 35,953 1,375,468 1,180,930 930,128 873,031 2,496,342 2,220,162 Mortgage-backed securities 1 4,194,472 3,756,042 955,241 871,032 Total $ 5,124,600 4,629,073 3,451,583 3,091,194 ______________________________ 1 Mortgage-backed securities, which have prepayment provisions, are not assigned to maturity categories due to fluctuations in their prepayment speeds.
Proceeds from sales and calls of debt securities and the associated gains and losses	Proceeds from sales and calls of debt securities and the associated gains and losses that have been included in earnings are listed below: Three Months ended (Dollars in thousands) March 31, March 31, Available-for-sale Proceeds from sales and calls of debt securities $ 173,268 31,279 Gross realized gains 1 29 145 Gross realized losses 1 — (176) Held-to-maturity Proceeds from calls of debt securities 5,535 4,635 Gross realized gains 1 — 8 Gross realized losses 1 (13) (91) ______________________________ 1 The gain or loss on the sale or call of each debt security is determined by the specific identification method.
AFS debt securities in an unrealized loss position with no ACL recorded	The following tables summarize available-for-sale debt securities that were in an unrealized loss position for which an ACL has not been recorded, based on the length of time the individual securities have been in an unrealized loss position. The number of available-for-sale debt securities in an unrealized position is also disclosed. March 31, 2024 Number Less than 12 Months 12 Months or More Total (Dollars in thousands) Fair Unrealized Fair Unrealized Fair Unrealized Available-for-sale U.S. government and federal agency 56 $ 2,512 (42) 449,659 (29,915) 452,171 (29,957) U.S. government sponsored enterprises 16 6,931 (5) 299,695 (22,761) 306,626 (22,766) State and local governments 99 14,909 (43) 64,440 (3,739) 79,349 (3,782) Corporate bonds 2 — — 13,362 (675) 13,362 (675) Residential mortgage-backed securities 402 1,040 (28) 2,677,271 (350,672) 2,678,311 (350,700) Commercial mortgage-backed securities 152 31,890 (1,685) 1,024,142 (86,338) 1,056,032 (88,023) Total available-for-sale 727 $ 57,282 (1,803) 4,528,569 (494,100) 4,585,851 (495,903) December 31, 2023 Number Less than 12 Months 12 Months or More Total (Dollars in thousands) Fair Unrealized Fair Unrealized Fair Unrealized Available-for-sale U.S. government and federal agency 57 $ 3,702 (56) 448,909 (29,613) 452,611 (29,669) U.S. government sponsored enterprises 14 — — 299,220 (22,774) 299,220 (22,774) State and local governments 85 3,039 (2) 64,645 (3,271) 67,684 (3,273) Corporate bonds 4 — — 23,262 (756) 23,262 (756) Residential mortgage-backed securities 402 1,430 (44) 2,809,482 (355,289) 2,810,912 (355,333) Commercial mortgage-backed securities 151 21,232 (268) 1,034,183 (86,302) 1,055,415 (86,570) Total available-for-sale 713 $ 29,403 (370) 4,679,701 (498,005) 4,709,104 (498,375)
Credit quality indictors for HTM debt securities	The following table summarizes the amortized cost of held-to-maturity municipal bonds aggregated by NRSRO credit rating: (Dollars in thousands) March 31, December 31, Municipal bonds held-to-maturity S&P: AAA / Moody’s: Aaa $ 422,288 427,918 S&P: AA+, AA, AA- / Moody’s: Aa1, Aa2, Aa3 1,180,187 1,182,894 S&P: A+, A, A- / Moody’s: A1, A2, A3 35,015 37,742 Not rated by either entity 4,061 1,446 Total municipal bonds held-to-maturity $ 1,641,551 1,650,000

Loans Receivable, Net (Tables)

Loans Receivable, Net (Tables)	3 Months Ended
	Mar. 31, 2024
Receivables [Abstract]
Summary of loans receivable	The following table presents loans receivable for each portfolio segment of loans: . (Dollars in thousands) March 31, December 31, Residential real estate $ 1,752,514 1,704,544 Commercial real estate 10,672,269 10,303,306 Other commercial 3,030,608 2,901,863 Home equity 883,062 888,013 Other consumer 394,049 400,356 Loans receivable 16,732,502 16,198,082 Allowance for credit losses (198,779) (192,757) Loans receivable, net $ 16,533,723 16,005,325 Net deferred origination (fees) costs included in loans receivable $ (24,769) (25,577) Net purchase accounting (discounts) premiums included in loans receivable $ (25,755) (13,802) Accrued interest receivable on loans $ 74,166 67,362
Summary of the activity in the ACL	The following table presents the provision for credit losses on the loan portfolio and off-balance sheet exposures: Three Months ended (Dollars in thousands) March 31, March 31, Provision for credit loss loans $ 9,091 6,260 Provision for credit loss unfunded (842) (790) Total provision for credit losses $ 8,249 5,470 Three Months ended March 31, 2024 (Dollars in thousands) Total Residential Real Estate Commercial Real Estate Other Commercial Home Equity Other Consumer Balance at beginning of period $ 192,757 22,325 130,924 21,194 11,766 6,548 Acquisitions 3 — 3 — — — Provision for credit losses 9,091 1,837 4,207 2,293 (764) 1,518 Charge-offs (4,295) — — (1,932) (25) (2,338) Recoveries 1,223 4 19 539 22 639 Balance at end of period $ 198,779 24,166 135,153 22,094 10,999 6,367 Three Months ended March 31, 2023 (Dollars in thousands) Total Residential Real Estate Commercial Real Estate Other Commercial Home Equity Other Consumer Balance at beginning of period $ 182,283 19,683 125,816 21,454 10,759 4,571 Provision for credit losses 6,260 293 4,704 (121) (230) 1,614 Charge-offs (3,293) (5) (347) (772) (4) (2,165) Recoveries 1,354 3 80 603 45 623 Balance at end of period $ 186,604 19,974 130,253 21,164 10,570 4,643
Loan portfolio aging analysis	The following tables present an aging analysis of the recorded investment in loans: March 31, 2024 (Dollars in thousands) Total Residential Commercial Other Home Other Accruing loans 30-59 days past due $ 35,185 8,920 12,559 7,082 3,395 3,229 Accruing loans 60-89 days past due 27,238 — 15,069 11,026 295 848 Accruing loans 90 days or more past due 3,796 1 2,683 891 172 49 Non-accrual loans with no ACL 20,650 2,728 13,956 1,552 1,788 626 Non-accrual loans with ACL 88 — — — — 88 Total past due and non-accrual loans 86,957 11,649 44,267 20,551 5,650 4,840 Current loans receivable 16,645,545 1,740,865 10,628,002 3,010,057 877,412 389,209 Total loans receivable $ 16,732,502 1,752,514 10,672,269 3,030,608 883,062 394,049 December 31, 2023 (Dollars in thousands) Total Residential Commercial Other Home Other Accruing loans 30-59 days past due $ 43,455 5,342 18,134 12,745 3,006 4,228 Accruing loans 60-89 days past due 6,512 729 2,439 774 1,527 1,043 Accruing loans 90 days or more past due 3,312 107 2,161 530 283 231 Non-accrual loans with no ACL 20,722 2,562 13,680 1,869 1,966 645 Non-accrual loans with ACL 94 — — 7 — 87 Total past due and non-accrual loans 74,095 8,740 36,414 15,925 6,782 6,234 Current loans receivable 16,123,987 1,695,804 10,266,892 2,885,938 881,231 394,122 Total loans receivable $ 16,198,082 1,704,544 10,303,306 2,901,863 888,013 400,356
Collateral dependent loans	The following table presents the amortized cost basis of collateral-dependent loans by collateral type: March 31, 2024 (Dollars in thousands) Total Residential Commercial Other Home Other Business assets $ 11,056 — 4 11,052 — — Residential real estate 17,757 11,316 4,235 294 1,768 144 Other real estate 20,794 7 19,794 612 20 361 Other 528 — — 14 — 514 Total $ 50,135 11,323 24,033 11,972 1,788 1,019 December 31, 2023 (Dollars in thousands) Total Residential Commercial Other Home Other Business assets $ 3,236 — 6 3,230 — — Residential real estate 17,578 11,099 4,317 98 1,968 96 Other real estate 21,635 35 20,598 620 25 357 Other 595 — — 15 — 580 Total $ 43,044 11,134 24,921 3,963 1,993 1,033
Summary of loan modifications	The following tables show the amortized cost basis at the end of the period of the loans modified to borrowers experiencing financial difficulty by segment: At or for the Three Months ended March 31, 2024 Interest Rate Reduction Term Extension and Payment Deferral Principal Combination - Term Extension and Interest Rate Reduction (Dollars in thousands) Amortized Cost Basis % of Total Class Amortized Cost Basis % of Total Class Amortized Cost Basis % of Total Class Amortized Cost Basis % of Total Class Total Residential real estate $ — — % $ 1,112 0.1 % $ — — % $ — — % $ 1,112 Commercial real estate 2,758 — % 13,978 0.1 % 658 — % 30,525 0.3 % 47,919 Other commercial — — % 16,185 0.5 % — — % 1,587 0.1 % 17,772 Home equity — — % 88 — % — — % — — % 88 Other consumer — — % 34 — % — — % — — % 34 Total $ 2,758 $ 31,397 $ 658 $ 32,112 $ 66,925 At or for the Three Months ended March 31, 2023 Term Extension and Payment Deferral Principal Combination - Term Extension and Interest Rate Reduction (Dollars in thousands) Amortized Cost Basis % of Total Class of Financing Receivable Amortized Cost Basis % of Total Class of Financing Receivable Amortized Cost Basis % of Total Class of Financing Receivable Total Commercial real estate $ 4,981 — % $ — — % $ 35 — % $ 5,016 Other commercial 1,568 0.1 % — — % 25 — % 1,593 Other consumer 18 — % 10 — % — — % 28 Total $ 6,567 $ 10 $ 60 $ 6,637 The following tables describe the financial effect of the modifications made to borrowers experiencing financial difficulty by segment: At or for the Three Months ended March 31, 2024 Weighted Average Interest Rate Reduction Weighted Average Term Extension Principal Forgiveness Residential real estate —% 1.7 years — Commercial real estate 1.24% 4 months — Other commercial —% 1.2 years — Home equity —% 9 months — Other consumer —% 1 month — At or for the Three Months ended March 31, 2023 Weighted Average Interest Rate Reduction Weighted Average Term Extension Principal Forgiveness Commercial real estate 2.11% 10 months — Other commercial —% 6 months — Other consumer —% 8 months $10 thousand The following tables depict the performance of loans that have been modified in the last twelve months by segment: March 31, 2024 (Dollars in thousands) Total Current 30-89 Days Past Due 90 Days or More Past Due Non-Accrual Residential real estate $ 1,112 1,112 — — — Commercial real estate 47,919 44,210 — — 3,709 Other commercial 17,772 17,184 32 — 556 Home equity 88 — — — 88 Other consumer 34 34 — — — Total $ 66,925 62,540 32 — 4,353 March 31, 2023 (Dollars in thousands) Total Current 30-89 Days Past Due 90 Days or More Past Due Non-Accrual Commercial real estate $ 5,016 1,446 3,570 — — Other commercial 1,593 1,379 193 21 — Other consumer 28 28 — — — Total $ 6,637 2,853 3,763 21 —
Credit quality indicators for commercial loans	The following tables present the amortized cost in commercial real estate and other commercial loans based on the Company’s internal risk rating. The date of a modification, renewal or extension of a loan is considered for the year of origination if the terms of the loan are as favorable to the Company as the terms are for a comparable loan to other borrowers with similar credit risk. March 31, 2024 (Dollars in thousands) Gross Charge-Offs Total Pass Special Mention Substandard Doubtful/ Commercial real estate loans Term loans by origination year 2024 (year-to-date) $ — 375,228 346,700 525 28,003 — 2023 — 1,309,692 1,306,800 2,490 402 — 2022 — 2,576,908 2,545,228 18,967 12,713 — 2021 — 2,234,493 2,201,926 21,305 11,262 — 2020 — 1,129,734 1,118,991 4,627 6,116 — Prior — 2,758,200 2,681,056 12,565 64,548 31 Revolving loans — 288,014 285,967 198 847 1,002 Total $ — 10,672,269 10,486,668 60,677 123,891 1,033 Other commercial loans Term loans by origination year 2024 (year-to-date) $ 1,448 72,882 72,804 32 19 27 2023 — 376,046 374,248 217 1,581 — 2022 48 564,827 559,005 1,364 4,457 1 2021 311 522,039 509,608 10,216 2,213 2 2020 76 236,089 229,213 1,926 4,948 2 Prior 49 581,118 556,228 — 24,881 9 Revolving loans — 677,607 661,798 2,501 12,817 491 Total $ 1,932 3,030,608 2,962,904 16,256 50,916 532 December 31, 2023 (Dollars in thousands) Gross Charge-Offs Total Pass Special Mention Substandard Doubtful/ Commercial real estate loans Term loans by origination year 2023 $ 889 $ 1,316,100 1,313,446 97 2,557 — 2022 430 2,547,939 2,520,484 12,855 14,600 — 2021 145 2,200,677 2,178,153 19,782 2,742 — 2020 — 1,130,117 1,124,525 — 5,592 — 2019 — 691,810 656,203 1,104 34,503 — Prior 616 2,129,808 2,053,011 18,818 57,948 31 Revolving loans — 286,855 285,432 1 1,421 1 Total $ 2,080 $ 10,303,306 10,131,254 52,657 119,363 32 Other commercial loans Term loans by origination year 2023 $ 3,080 $ 369,059 367,337 — 1,603 119 2022 406 566,295 561,567 3,319 1,408 1 2021 — 531,558 519,151 10,187 2,218 2 2020 92 245,962 240,613 — 5,347 2 2019 — 145,828 141,336 — 4,490 2 Prior 313 448,619 443,400 — 5,219 — Revolving loans — 594,542 577,953 11,977 4,612 — Total $ 3,891 $ 2,901,863 2,851,357 25,483 24,897 126
Credit quality indicators for RRE and consumer loans	The following tables present the amortized cost in residential real estate, home equity and other consumer loans based on payment performance: March 31, 2024 (Dollars in thousands) Gross Charge-Offs Total Performing 30-89 Days Past Due Non-Accrual and 90 Days or More Past Due Residential real estate loans Term loans by origination year 2024 (year-to-date) $ — 19,177 19,177 — — 2023 — 274,053 272,755 1,298 — 2022 — 680,095 675,305 4,790 — 2021 — 487,436 487,070 366 — 2020 — 97,272 97,094 178 — Prior — 194,211 189,194 2,288 2,729 Revolving loans — 270 270 — — Total $ — 1,752,514 1,740,865 8,920 2,729 Home equity loans Term loans by origination year 2024 (year-to-date) $ — — — — — 2023 15 80 80 — — 2022 — — — — — 2021 — 132 132 — — 2020 — 19 19 — — Prior 10 5,285 5,195 10 80 Revolving loans — 877,546 871,986 3,680 1,880 Total $ 25 883,062 877,412 3,690 1,960 Other consumer loans Term loans by origination year 2024 (year-to-date) $ 2,016 34,356 32,449 1,907 — 2023 95 120,609 120,230 244 135 2022 136 88,996 88,326 487 183 2021 30 57,852 57,040 658 154 2020 22 24,906 24,797 96 13 Prior 39 26,798 26,340 182 276 Revolving loans — 40,532 40,027 503 2 Total $ 2,338 394,049 389,209 4,077 763 December 31, 2023 (Dollars in thousands) Gross Charge-Offs Total Performing 30-89 Days Past Due Non-Accrual and 90 Days or More Past Due Residential real estate loans Term loans by origination year 2023 $ — $ 234,568 233,753 815 — 2022 5 673,782 671,196 2,586 — 2021 — 495,645 495,645 — — 2020 — 99,199 99,199 — — 2019 — 42,054 42,054 — — Prior 15 158,828 153,489 2,670 2,669 Revolving loans — 468 468 — — Total $ 20 $ 1,704,544 1,695,804 6,071 2,669 Home equity loans Term loans by origination year 2023 $ — $ — — — — 2022 — 20 20 — — 2021 48 — — — — 2020 50 21 21 — — 2019 — 178 178 — — Prior 31 5,492 5,277 11 204 Revolving loans — 882,302 875,735 4,522 2,045 Total $ 129 $ 888,013 881,231 4,533 2,249 Other consumer loans Term loans by origination year 2023 $ 7,801 $ 139,295 137,035 2,079 181 2022 715 98,630 97,536 870 224 2021 170 62,961 62,107 805 49 2020 85 29,143 29,012 119 12 2019 73 12,335 12,279 43 13 Prior 131 17,314 16,664 173 477 Revolving loans — 40,678 39,489 1,182 7 Total $ 8,975 $ 400,356 394,122 5,271 963

Leases (Tables)

Leases (Tables)	3 Months Ended
	Mar. 31, 2024
Leases [Abstract]
Summary of leases	The following table summarizes the Company’s leases: March 31, 2024 December 31, 2023 (Dollars in thousands) Finance Operating Finance Operating ROU assets $ 31,413 31,222 Accumulated depreciation (8,030) (6,940) Net ROU assets $ 23,383 40,065 24,282 40,781 Lease liabilities $ 24,335 43,706 25,116 44,319 Weighted-average remaining lease term 11 years 16 years 11 years 16 years Weighted-average discount rate 3.6 % 3.7 % 3.6 % 3.7 %
Operating lease liability maturity	Maturities of lease liabilities consist of the following: March 31, 2024 (Dollars in thousands) Finance Operating Maturing within one year $ 4,716 4,655 Maturing one year through two years 4,725 4,749 Maturing two years through three years 4,734 4,605 Maturing three years through four years 3,701 4,193 Maturing four years through five years 581 3,730 Thereafter 10,988 38,151 Total lease payments 29,445 60,083 Present value of lease payments Short-term 3,911 3,134 Long-term 20,424 40,572 Total present value of lease payments 24,335 43,706 Difference between lease payments and present value of lease payments $ 5,110 16,377
Finance lease liability maturity	Maturities of lease liabilities consist of the following: March 31, 2024 (Dollars in thousands) Finance Operating Maturing within one year $ 4,716 4,655 Maturing one year through two years 4,725 4,749 Maturing two years through three years 4,734 4,605 Maturing three years through four years 3,701 4,193 Maturing four years through five years 581 3,730 Thereafter 10,988 38,151 Total lease payments 29,445 60,083 Present value of lease payments Short-term 3,911 3,134 Long-term 20,424 40,572 Total present value of lease payments 24,335 43,706 Difference between lease payments and present value of lease payments $ 5,110 16,377
Components of lease expense	The components of lease expense consist of the following: Three Months ended (Dollars in thousands) March 31, March 31, Finance lease cost Amortization of ROU assets 1,090 1,026 Interest on lease liabilities 224 244 Operating lease cost 1,318 1,496 Short-term lease cost 123 205 Variable lease cost 464 443 Sublease income (10) (13) Total lease expense 3,209 3,401 Supplemental cash flow information related to leases is as follows: Three Months ended March 31, 2024 March 31, 2023 (Dollars in thousands) Finance Operating Finance Operating Cash paid for amounts included in the measurement of lease liabilities Operating cash flows $ 224 824 244 926 Financing cash flows 948 N/A 861 N/A

Goodwill (Tables)

Goodwill (Tables)	3 Months Ended
	Mar. 31, 2024
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of goodwill	The following schedule discloses the changes in the carrying value of goodwill: Three Months ended (Dollars in thousands) March 31, March 31, Net carrying value at beginning of period 985,393 985,393 Acquisitions and adjustments 38,369 — Net carrying value at end of period 1,023,762 985,393

Loan Servicing (Tables)

Loan Servicing (Tables)	3 Months Ended
	Mar. 31, 2024
Mortgage Banking [Abstract]
Servicing asset at amortized cost	The following schedules disclose the change in the carrying value of mortgage servicing rights that is included in other assets, principal balances of loans serviced and the fair value of mortgage servicing rights: (Dollars in thousands) March 31, December 31, Carrying value at beginning of period $ 12,534 13,488 Additions 58 434 Amortization (294) (1,388) Carrying value at end of period $ 12,298 12,534 Principal balances of loans serviced for others $ 1,550,129 1,570,834 Fair value of servicing rights $ 17,933 18,000

Variable Interest Entities (Tab

Variable Interest Entities (Tables)	3 Months Ended
	Mar. 31, 2024
Equity Method Investments and Joint Ventures [Abstract]
Carrying amounts of consolidated VIEs' assets and liabilities	The following table summarizes the carrying amounts of the consolidated VIEs’ assets and liabilities included in the Company’s statements of financial condition and are adjusted for intercompany eliminations. All assets presented can be used only to settle obligations of the consolidated VIEs and all liabilities presented consist of liabilities for which creditors and other beneficial interest holders therein have no recourse to the general credit of the Company. (Dollars in thousands) March 31, December 31, Assets Loans receivable $ 147,353 136,527 Accrued interest receivable 587 376 Other assets 78,278 48,924 Total assets $ 226,218 185,827 Liabilities Other borrowed funds $ 64,480 56,578 Accrued interest payable 467 242 Other liabilities 28,655 182 Total liabilities $ 93,602 57,002
Future unfunded contingent commitments	Future unfunded contingent equity commitments related to the Company’s LIHTC investments at March 31, 2024 are as follows: (Dollars in thousands) Amount Years ending December 31, 2024 $ 50,773 2025 39,759 2026 10,661 2027 355 2028 287 Thereafter 2,337 Total $ 104,172
Amortization expense and tax credits and other tax benefits recognized for qualified affordable housing project investments	The following table summarizes the amortization expense and the amount of tax credits and other tax benefits recognized for qualified affordable housing project investments during the periods presented. Three Months ended (Dollars in thousands) March 31, March 31, Amortization expense $ 5,184 3,949 Tax credits and other tax benefits recognized 6,802 5,283

Securities Sold Under Agreeme_2

Securities Sold Under Agreements to Repurchase (Tables)	3 Months Ended
	Mar. 31, 2024
Transfers and Servicing [Abstract]
Carrying value of repurchase agreements	The following table summarizes the carrying value of the Company’s securities sold under agreements to repurchase (“repurchase agreements”) by remaining contractual maturity of the agreements and category of collateral: Overnight and Continuous (Dollars in thousands) March 31, December 31, U.S. government and federal agency $ — $ 113,509 Residential mortgage-backed securities 1,540,008 1,306,047 Commercial mortgage-backed securities — 67,294 Total $ 1,540,008 1,486,850

Derivatives and Hedging Activ_2

Derivatives and Hedging Activities (Tables)	3 Months Ended
	Mar. 31, 2024
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Summary of pre-tax gains or losses	The effect of cash flow hedge accounting on OCI for the periods ending March 31, 2024 and 2023 was as follows: Three Months ended (Dollars in thousands) March 31, March 31, Amount of gain recognized in OCI $ 657 (36) Amount of gain reclassified from OCI to net income 1,260 974
Summary of derivative instruments	The following tables present the notional and estimated fair value amount of derivative positions outstanding: March 31, 2024 Weighted Average (Dollars in thousands) Notional Amount Asset Derivative Liability Derivative Remaining Maturity Receive Rate Pay Rate Interest rate swap - securities $ 1,500,000 $ 1,067 $ 2,279 1.9 years SOFR 4.63 % December 31, 2023 Weighted Average (Dollars in thousands) Notional Amount Asset Derivative Liability Derivative Remaining Maturity Receive Rate Pay Rate Interest rate swap - securities $ 1,500,000 $ — $ 17,988 2.1 years SOFR 4.63 % The following amounts were recorded on the balance sheet related to cumulative basis adjustments for fair value hedges: (Dollars in thousands) Amortized cost of the Hedged Assets Amortized Cost of Fair Value Hedging Increase (Decrease) Included in the Carrying Amount of the Hedged Assets Line item on the balance sheet March 31, December 31, March 31, December 31, Investment securities available-for-sale $ 3,678,606 $ 3,807,239 $ 1,212 $ 17,988 The effects of the fair value hedge relationships on the income statement were as follows: Three Months Ended (Dollars in thousands) Location of Gain (Loss) March 31, 2024 March 31, 2023 Interest rate swap Interest income on investment securities $ 3,078 $ — AFS debt Interest income on investment securities (3,078) —

Other Expenses (Tables)

Other Expenses (Tables)	3 Months Ended
	Mar. 31, 2024
Other Expenses [Abstract]
Schedule of other expenses	Other expenses consists of the following: Three Months ended (Dollars in thousands) March 31, March 31, Mergers and acquisition expenses $ 5,725 352 Consulting and outside services 4,727 4,081 Debit card expenses 3,582 2,965 VIE amortization and other expenses 3,308 2,528 Loan expenses 2,299 1,707 Business development 1,648 1,361 Telephone 1,551 1,579 Checking and operating expenses 1,518 666 Employee expenses 1,432 1,295 Postage 1,246 1,118 Accounting and audit fees 822 1,024 Printing and supplies 721 844 Legal fees 423 325 (Gain) loss on dispositions of fixed assets (1,035) (15) Other 2,516 2,302 Total other expenses $ 30,483 22,132

Accumulated Other Comprehensi_2

Accumulated Other Comprehensive (Loss) Income (Tables)	3 Months Ended
	Mar. 31, 2024
Equity [Abstract]
Activity within accumulated other comprehensive (loss) income, net of tax	The following table illustrates the activity within accumulated other comprehensive (loss) income by component, net of tax: (Dollars in thousands) (Losses) Gains on Available-For-Sale and Transferred Debt Securities (Losses) Gains on Derivatives Used for Cash Flow Hedges Total Balance at January 1, 2023 $ (474,338) 5,546 (468,792) Other comprehensive income (loss) before reclassifications 57,890 (27) 57,863 Reclassification adjustments for gains and transfers included in net income 24 (728) (704) Reclassification adjustments for amortization included in net income for transferred securities 1,405 — 1,405 Net current period other comprehensive (loss) income 59,319 (755) 58,564 Balance at March 31, 2023 $ (415,019) 4,791 (410,228) Balance at January 1, 2024 $ (377,728) 3,615 (374,113) Other comprehensive income before reclassifications 1,527 493 2,020 Reclassification adjustments for gains and transfers included in net income (22) (944) (966) Reclassification adjustments for amortization included in net income for transferred securities 754 — 754 Net current period other comprehensive income (loss) 2,259 (451) 1,808 Balance at March 31, 2024 $ (375,469) 3,164 (372,305)

Earnings Per Share (Tables)

Earnings Per Share (Tables)	3 Months Ended
	Mar. 31, 2024
Earnings Per Share [Abstract]
Basic and diluted earnings per share	Basic and diluted earnings per share has been computed based on the following: Three Months ended (Dollars in thousands, except per share data) March 31, March 31, Net income available to common stockholders, basic and diluted $ 32,627 61,211 Average outstanding shares - basic 112,492,142 110,824,648 Add: dilutive restricted stock units and stock options 62,260 57,060 Average outstanding shares - diluted 112,554,402 110,881,708 Basic earnings per share $ 0.29 0.55 Diluted earnings per share $ 0.29 0.55 Restricted stock units and stock options excluded from the diluted average outstanding share calculation 1 139,840 205,974 ______________________________ 1 Anti-dilution occurs when the unrecognized compensation cost per share of a restricted stock unit or the exercise price of a stock option exceeds the market price of the Company’s stock.

Fair Value of Assets and Liab_2

Fair Value of Assets and Liabilities (Tables)	3 Months Ended
	Mar. 31, 2024
Fair Value Disclosures [Abstract]
Fair value measurement of assets measured at fair value on a recurring basis	The following tables disclose the fair value measurement of assets and liabilities measured at fair value on a recurring basis: Fair Value Measurements (Dollars in thousands) Fair Value March 31, 2024 Quoted Prices Significant Significant Debt securities, available-for-sale U.S. government and federal agency $ 454,817 — 454,817 — U.S. government sponsored enterprises 306,626 — 306,626 — State and local governments 97,382 — 97,382 — Corporate bonds 14,206 — 14,206 — Residential mortgage-backed securities 2,677,651 — 2,677,651 — Commercial mortgage-backed securities 1,078,391 — 1,078,391 — Loans held for sale, at fair value 27,035 — 27,035 — Interest rate caps 4,345 — 4,345 — Interest rate locks 1,032 — 1,032 — Interest rate swap 1,067 — 1,067 — Total assets measured at fair value on a recurring basis $ 4,662,552 — 4,662,552 — TBA hedge $ 124 — 124 — Interest rate swap 2,279 — 2,279 — Total liabilities measured at fair value on a recurring basis $ 2,403 — 2,403 — Fair Value Measurements (Dollars in thousands) Fair Value December 31, 2023 Quoted Prices Significant Significant Debt securities, available-for-sale U.S. government and federal agency $ 455,347 — 455,347 — U.S. government sponsored enterprises 299,219 — 299,219 — State and local governments 98,932 — 98,932 — Corporate bonds 26,253 — 26,253 — Residential mortgage-backed securities 2,811,263 — 2,811,263 — Commercial mortgage-backed securities 1,094,705 — 1,094,705 — Loans held for sale, at fair value 15,691 — 15,691 — Interest rate caps 4,990 — 4,990 — Interest rate locks 604 — 604 — Total assets measured at fair value on a recurring basis $ 4,807,004 — 4,807,004 — TBA hedge $ 350 — 350 — Interest rate swap 17,988 — 17,988 — Total liabilities measured at fair value on a recurring basis $ 18,338 — 18,338 —
Fair value measurement of assets measured at fair value on a non-recurring basis	The following tables disclose the fair value measurement of assets with a recorded change during the period resulting from re-measuring the assets at fair value on a non-recurring basis: Fair Value Measurements (Dollars in thousands) Fair Value March 31, 2024 Quoted Prices Significant Significant Collateral-dependent impaired loans, net of ACL $ 1,542 — — 1,542 Total assets measured at fair value on a non-recurring basis $ 1,542 — — 1,542 Fair Value Measurements (Dollars in thousands) Fair Value December 31, 2023 Quoted Prices Significant Significant Other real estate owned $ 166 — — 166 Collateral-dependent impaired loans, net of ACL 1,332 — — 1,332 Total assets measured at fair value on a non-recurring basis $ 1,498 — — 1,498
Quantitative information about assets measured at fair value on a non-recurring basis for which Level 3 inputs were used	The following tables present additional quantitative information about assets measured at fair value on a non-recurring basis and for which the Company has utilized Level 3 inputs to determine fair value: Fair Value March 31, 2024 Quantitative Information about Level 3 Fair Value Measurements (Dollars in thousands) Valuation Technique Unobservable Input Range (Weighted-Average) 1 Collateral-dependent impaired loans, net of ACL $ 1,248 Cost approach Selling costs 10.0% - 10.0% (10.0%) 33 Sales comparison approach Selling costs 10.0% - 20.0% (18.4%) 261 Combined approach Selling costs 10.0% - 10.0% (10.0%) $ 1,542 Fair Value December 31, 2023 Quantitative Information about Level 3 Fair Value Measurements (Dollars in thousands) Valuation Technique Unobservable Input Range (Weighted-Average) 1 Other real estate owned $ 166 Sales comparison approach Selling costs 0.0% - 10.0% (8.1%) Collateral-dependent impaired loans, net of ACL $ 1,258 Cost approach Selling costs 10.0% - 10.0% (10.0%) 74 Sales comparison approach Selling Costs 10.0% - 10.0% (10.0%) $ 1,332 ______________________________ 1 The range for selling cost inputs represents reductions to the fair value of the assets.
Carrying amounts and estimated fair values of financial instruments not carried at fair value	The fair value of unused lines of credit and letters of credit is not material; therefore, such commitments are not included in the following tables. Fair Value Measurements (Dollars in thousands) Carrying Amount March 31, 2024 Quoted Prices Significant Significant Financial assets Cash and cash equivalents $ 788,660 788,660 — — Debt securities, held-to-maturity 3,451,583 — 3,091,194 — Loans receivable, net of ACL 16,533,723 — — 16,545,822 Total financial assets $ 20,773,966 788,660 3,091,194 16,545,822 Financial liabilities Term deposits $ 3,039,190 — 3,077,983 — FHLB advances 2,140,157 — 2,135,901 — Repurchase agreements and other borrowed funds 1,628,822 — 1,628,822 — Subordinated debentures 132,984 — 121,821 — Total financial liabilities $ 6,941,153 — 6,964,527 — Fair Value Measurements (Dollars in thousands) Carrying Amount December 31, 2023 Quoted Prices Significant Significant Financial assets Cash and cash equivalents $ 1,354,342 1,354,342 — — Debt securities, held-to-maturity 3,502,411 — 3,180,194 — Loans receivable, net of ACL 16,005,325 — — 16,133,681 Total financial assets $ 20,862,078 1,354,342 3,180,194 16,133,681 Financial liabilities Term deposits $ 2,915,393 — 2,955,521 — FRB Bank Term Funding 2,740,000 — 2,738,031 — Repurchase agreements and other borrowed funds 1,568,545 — 1,568,545 — Subordinated debentures 132,943 — 119,768 — Total financial liabilities $ 7,356,881 — 7,381,865 —

Mergers and Acquisitions (Table

Mergers and Acquisitions (Tables)	3 Months Ended
	Mar. 31, 2024
Business Combinations [Abstract]
Consideration transferred, identifiable net assets acquired and resulting goodwill	The following table discloses the preliminary fair value estimates of the consideration transferred, the total identifiable net assets acquired and the resulting goodwill arising from the Wheatland acquisition. The Company is continuing to obtain information to determine the fair values of assets acquired and liabilities assumed. (Dollars in thousands) Wheatland Fair value of consideration transferred Fair value of Company shares issued $ 92,385 Cash consideration 771 Total fair value of consideration transferred 93,156 Recognized amounts of identifiable assets acquired and liabilities assumed Identifiable assets acquired Cash and cash equivalents 31,674 Debt securities 187,183 Loans receivable, net of ACL 452,737 Core deposit intangible 1 16,936 Accrued income and other assets 50,760 Total identifiable assets acquired 739,290 Liabilities assumed Deposits 616,955 Borrowings 58,500 Accrued expenses and other liabilities 9,048 Total liabilities assumed 684,503 Total identifiable net assets 54,787 Goodwill recognized $ 38,369 ______________________________ 1 The core deposit intangible for the acquisition was determined to have an estimated life of 10 years.
Unaudited pro forma summary of the company as if the acquisitions had occurred at the beginning of the period	The following unaudited pro forma summary presents consolidated information of the Company as if the Wheatland acquisition had occurred on January 1, 2023: Three Months ended (Dollars in thousands) March 31, March 31, Net interest income and non-interest income $ 198,925 220,927 Net income 30,602 62,358

Nature of Operations and Summ_4

Nature of Operations and Summary of Significant Accounting Policies - Narrative (Details)	3 Months Ended
	Mar. 31, 2024 USD ($) component operatingSegment bankDivision quarter	Mar. 31, 2023 USD ($)	Dec. 31, 2023 USD ($)
Property, Plant and Equipment
Number of bank divisions | bankDivision	17
Number of operating segments | operatingSegment	1
Maximum period of original maturity to be included in cash and cash equivalents	3 months
Restricted cash	$ 19,250,000		$ 17,440,000
Federal reserve balance or cash on hand required	$ 0
Minimum period past due to consider loans as delinquent	30 days
Minimum period past due to consider loans as non accrual	90 days
Forecasting period used to determine ACL | quarter	4
Number of components used in methodology in determining ACL | component	2
Provision for credit losses on debt securities	$ 0	$ 0
Maximum term leases will be considered short-term	12 months
Maximum period up to which purchase price of business is allocated to assets acquired and liabilities assumed	1 year
Revenue from contracts with customers	$ 22,151,000	$ 20,879,000
Impairment losses on receivables related to contracts with customers	$ 0		$ 0
Minimum
Property, Plant and Equipment
Period past due to consider loan as purchased credit-deteriorated loan	90 days
Number of days delinquent to charge off loans	120 days
Number of years for home equity loan origination term	10 years
Period past due to consider loan as delinquent	30 days
Minimum | Building
Property, Plant and Equipment
Useful life of premises and equipment	15 years
Minimum | Furniture and Fixtures
Property, Plant and Equipment
Useful life of premises and equipment	3 years
Maximum
Property, Plant and Equipment
Number of years for home equity loan origination term	15 years
Period past due to consider loan as delinquent	89 days
Maximum | Building
Property, Plant and Equipment
Useful life of premises and equipment	40 years
Maximum | Furniture and Fixtures
Property, Plant and Equipment
Useful life of premises and equipment	10 years

Nature of Operations and Summ_5

Nature of Operations and Summary of Significant Accounting Policies - Schedule of Provision for Credit Losses (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Accounting Policies [Abstract]
Provision for credit loss loans	$ 9,091	$ 6,260
Provision for credit loss unfunded	(842)	(790)
Total provision for credit losses	$ 8,249	$ 5,470

Debt Securities - Amortized Cos

Debt Securities - Amortized Cost, Gross Unrealized Gains and Losses and Fair Value of Investment Securities (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Available-for-sale
Amortized Cost	$ 5,124,600	$ 5,283,253
Gross Unrealized Gains	376	841
Gross Unrealized Losses	(495,903)	(498,375)
Fair Value	4,629,073	4,785,719
Held-to-maturity
Amortized Cost	3,451,583	3,502,411
Gross Unrealized Gains	1,344	2,843
Gross Unrealized Losses	(361,733)	(325,060)
Fair Value	3,091,194	3,180,194
Total debt securities
Amortized Cost	8,576,183	8,785,664
Gross Unrealized Gains	1,720	3,684
Gross Unrealized Losses	(857,636)	(823,435)
Fair Value	7,720,267	7,965,913
U.S. government and federal agency
Available-for-sale
Amortized Cost	484,765	485,005
Gross Unrealized Gains	9	11
Gross Unrealized Losses	(29,957)	(29,669)
Fair Value	454,817	455,347
Held-to-maturity
Amortized Cost	854,791	853,273
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(71,911)	(65,472)
Fair Value	782,880	787,801
U.S. government sponsored enterprises
Available-for-sale
Amortized Cost	329,392	321,993
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(22,766)	(22,774)
Fair Value	306,626	299,219
State and local governments
Available-for-sale
Amortized Cost	101,090	101,903
Gross Unrealized Gains	74	302
Gross Unrealized Losses	(3,782)	(3,273)
Fair Value	97,382	98,932
Held-to-maturity
Amortized Cost	1,641,551	1,650,000
Gross Unrealized Gains	1,344	2,843
Gross Unrealized Losses	(205,613)	(181,192)
Fair Value	1,437,282	1,471,651
Corporate bonds
Available-for-sale
Amortized Cost	14,881	27,007
Gross Unrealized Gains	0	2
Gross Unrealized Losses	(675)	(756)
Fair Value	14,206	26,253
Residential mortgage-backed securities
Available-for-sale
Amortized Cost	3,028,348	3,166,589
Gross Unrealized Gains	3	7
Gross Unrealized Losses	(350,700)	(355,333)
Fair Value	2,677,651	2,811,263
Held-to-maturity
Amortized Cost	955,241	999,138
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(84,209)	(78,396)
Fair Value	871,032	920,742
Commercial mortgage-backed securities
Available-for-sale
Amortized Cost	1,166,124	1,180,756
Gross Unrealized Gains	290	519
Gross Unrealized Losses	(88,023)	(86,570)
Fair Value	$ 1,078,391	$ 1,094,705

Debt Securities - Maturity Sche

Debt Securities - Maturity Schedule (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Available-for-Sale, Amortized Cost
Due within one year	$ 11,544
Due after one year through five years	846,883
Due after five years through ten years	33,140
Due after ten years	38,561
Total before mortgage-backed securities	930,128
Mortgage-backed securities	4,194,472
Amortized Cost	5,124,600	$ 5,283,253
Available-for-Sale, Fair Value
Due within one year	11,527
Due after one year through five years	793,437
Due after five years through ten years	32,114
Due after ten years	35,953
Total before mortgage-backed securities	873,031
Mortgage-backed securities	3,756,042
Debt securities, available-for-sale	4,629,073	4,785,719
Held-to-Maturity, Amortized Cost
Due within one year	5,212
Due after one year through five years	934,210
Due after five years through ten years	181,452
Due after ten years	1,375,468
Total before mortgage-backed securities	2,496,342
Mortgage-backed securities	955,241
Amortized Cost	3,451,583	3,502,411
Held-to-Maturity, Fair Value
Due within one year	5,194
Due after one year through five years	860,793
Due after five years through ten years	173,245
Due after ten years	1,180,930
Total before mortgage-backed securities	2,220,162
Mortgage-backed securities	871,032
Total	$ 3,091,194	$ 3,180,194

Debt Securities - Proceeds From

Debt Securities - Proceeds From Sales and Calls of Debt Securities and Associates Gains or Losses (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Available-for-sale
Proceeds from sales and calls of debt securities	$ 173,268	$ 31,279
Gross realized gains	29	145
Gross realized losses	0	(176)
Held-to-maturity
Proceeds from calls of debt securities	5,535	4,635
Gross realized gains	0	8
Gross realized losses	$ (13)	$ (91)

Debt Securities - Debt Securiti

Debt Securities - Debt Securities in an Unrealized Loss Position (Details) $ in Thousands	Mar. 31, 2024 USD ($) security	Dec. 31, 2023 USD ($) security
Available-for-sale
Number of Securities | security	727	713
Less than 12 Months, Fair Value	$ 57,282	$ 29,403
Less than 12 Months, Unrealized Loss	(1,803)	(370)
12 Months or More, Fair Value	4,528,569	4,679,701
12 Months or More, Unrealized Loss	(494,100)	(498,005)
Total, Fair Value	4,585,851	4,709,104
Total, Unrealized Loss	$ (495,903)	$ (498,375)
U.S. government and federal agency
Available-for-sale
Number of Securities | security	56	57
Less than 12 Months, Fair Value	$ 2,512	$ 3,702
Less than 12 Months, Unrealized Loss	(42)	(56)
12 Months or More, Fair Value	449,659	448,909
12 Months or More, Unrealized Loss	(29,915)	(29,613)
Total, Fair Value	452,171	452,611
Total, Unrealized Loss	$ (29,957)	$ (29,669)
U.S. government sponsored enterprises
Available-for-sale
Number of Securities | security	16	14
Less than 12 Months, Fair Value	$ 6,931	$ 0
Less than 12 Months, Unrealized Loss	(5)	0
12 Months or More, Fair Value	299,695	299,220
12 Months or More, Unrealized Loss	(22,761)	(22,774)
Total, Fair Value	306,626	299,220
Total, Unrealized Loss	$ (22,766)	$ (22,774)
State and local governments
Available-for-sale
Number of Securities | security	99	85
Less than 12 Months, Fair Value	$ 14,909	$ 3,039
Less than 12 Months, Unrealized Loss	(43)	(2)
12 Months or More, Fair Value	64,440	64,645
12 Months or More, Unrealized Loss	(3,739)	(3,271)
Total, Fair Value	79,349	67,684
Total, Unrealized Loss	$ (3,782)	$ (3,273)
Corporate bonds
Available-for-sale
Number of Securities | security	2	4
Less than 12 Months, Fair Value	$ 0	$ 0
Less than 12 Months, Unrealized Loss	0	0
12 Months or More, Fair Value	13,362	23,262
12 Months or More, Unrealized Loss	(675)	(756)
Total, Fair Value	13,362	23,262
Total, Unrealized Loss	$ (675)	$ (756)
Residential mortgage-backed securities
Available-for-sale
Number of Securities | security	402	402
Less than 12 Months, Fair Value	$ 1,040	$ 1,430
Less than 12 Months, Unrealized Loss	(28)	(44)
12 Months or More, Fair Value	2,677,271	2,809,482
12 Months or More, Unrealized Loss	(350,672)	(355,289)
Total, Fair Value	2,678,311	2,810,912
Total, Unrealized Loss	$ (350,700)	$ (355,333)
Commercial mortgage-backed securities
Available-for-sale
Number of Securities | security	152	151
Less than 12 Months, Fair Value	$ 31,890	$ 21,232
Less than 12 Months, Unrealized Loss	(1,685)	(268)
12 Months or More, Fair Value	1,024,142	1,034,183
12 Months or More, Unrealized Loss	(86,338)	(86,302)
Total, Fair Value	1,056,032	1,055,415
Total, Unrealized Loss	$ (88,023)	$ (86,570)

Debt Securities - Narrative (De

Debt Securities - Narrative (Details)	3 Months Ended
	Mar. 31, 2024 USD ($) security	Dec. 31, 2023 USD ($)
Schedule of Held-to-maturity Securities [Line Items]
Severity rate on available-for-sale debt securities in an unrealized loss position	5%
Number of credit rating categories, highest | security	4
Debt securities, available-for-sale	$ 4,629,073,000	$ 4,785,719,000
Interest receivable, available-for-sale debt securities	9,315,000	9,319,000
ACL on available-for-sale debt securities	0
Debt securities, held-to-maturity	3,451,583,000	3,502,411,000
Interest receivable, held-to-maturity debt securities	21,685,000	16,990,000
ACL on held-to-maturity debt securities	0	0
Past due
Schedule of Held-to-maturity Securities [Line Items]
Debt securities, available-for-sale	0	0
Debt securities, held-to-maturity	$ 0	$ 0

Debt Securities - Credit Qualit

Debt Securities - Credit Quality Indictors for HTM Debt Securities (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Debt securities, held-to-maturity	$ 3,451,583	$ 3,502,411
Municipal Bonds
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Debt securities, held-to-maturity	1,641,551	1,650,000
Investment Grade | Moody's: Aaa | S&P: AAA | Municipal Bonds
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Debt securities, held-to-maturity	422,288	427,918
Investment Grade | Moody's: Aa1, Aa2, Aa3 | S&P: AA+, AA, AA- | Municipal Bonds
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Debt securities, held-to-maturity	1,180,187	1,182,894
Investment Grade | Moody's: A1, A2, A3 | S&P: A+, A, A- | Municipal Bonds
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Debt securities, held-to-maturity	35,015	37,742
Investment Grade | Moody's: Not Rated | S&P: Not Rated | Municipal Bonds
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Debt securities, held-to-maturity	$ 4,061	$ 1,446

Loans Receivable, Net - Summary

Loans Receivable, Net - Summary of Loans Receivable (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023	Mar. 31, 2023	Dec. 31, 2022
Summary of Loans Receivable
Loans receivable	$ 16,732,502	$ 16,198,082
Allowance for credit losses	(198,779)	(192,757)	$ (186,604)	$ (182,283)
Loans receivable, net	16,533,723	16,005,325
Net deferred origination (fees) costs included in loans receivable	(24,769)	(25,577)
Net purchase accounting (discounts) premiums included in loans receivable	(25,755)	(13,802)
Accrued interest receivable on loans	74,166	67,362
Residential real estate
Summary of Loans Receivable
Loans receivable	1,752,514	1,704,544
Allowance for credit losses	(24,166)	(22,325)	(19,974)	(19,683)
Commercial real estate
Summary of Loans Receivable
Loans receivable	10,672,269	10,303,306
Allowance for credit losses	(135,153)	(130,924)	(130,253)	(125,816)
Other commercial
Summary of Loans Receivable
Loans receivable	3,030,608	2,901,863
Allowance for credit losses	(22,094)	(21,194)	(21,164)	(21,454)
Home equity
Summary of Loans Receivable
Loans receivable	883,062	888,013
Allowance for credit losses	(10,999)	(11,766)	(10,570)	(10,759)
Other consumer
Summary of Loans Receivable
Loans receivable	394,049	400,356
Allowance for credit losses	$ (6,367)	$ (6,548)	$ (4,643)	$ (4,571)

Loans Receivable, Net - ACL Act

Loans Receivable, Net - ACL Activity (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023
Allowance for credit losses
Balance at beginning of period	$ 192,757	$ 182,283	$ 182,283
Acquisitions	3
Provision for credit losses	9,091	6,260
Charge-offs	(4,295)	(3,293)
Recoveries	1,223	1,354
Balance at end of period	198,779	186,604	192,757
Residential real estate
Allowance for credit losses
Balance at beginning of period	22,325	19,683	19,683
Acquisitions	0
Provision for credit losses	1,837	293
Charge-offs	0	(5)	(20)
Recoveries	4	3
Balance at end of period	24,166	19,974	22,325
Commercial real estate
Allowance for credit losses
Balance at beginning of period	130,924	125,816	125,816
Acquisitions	3
Provision for credit losses	4,207	4,704
Charge-offs	0	(347)	(2,080)
Recoveries	19	80
Balance at end of period	135,153	130,253	130,924
Other commercial
Allowance for credit losses
Balance at beginning of period	21,194	21,454	21,454
Acquisitions	0
Provision for credit losses	2,293	(121)
Charge-offs	(1,932)	(772)	(3,891)
Recoveries	539	603
Balance at end of period	22,094	21,164	21,194
Home equity
Allowance for credit losses
Balance at beginning of period	11,766	10,759	10,759
Acquisitions	0
Provision for credit losses	(764)	(230)
Charge-offs	(25)	(4)	(129)
Recoveries	22	45
Balance at end of period	10,999	10,570	11,766
Other consumer
Allowance for credit losses
Balance at beginning of period	6,548	4,571	4,571
Acquisitions	0
Provision for credit losses	1,518	1,614
Charge-offs	(2,338)	(2,165)	(8,975)
Recoveries	639	623
Balance at end of period	$ 6,367	$ 4,643	$ 6,548

Loans Receivable, Net - Aging A

Loans Receivable, Net - Aging Analysis (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable	$ 16,732,502	$ 16,198,082
Accruing loans 30-59 days past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable	35,185	43,455
Accruing loans 60-89 days past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable	27,238	6,512
Accruing loans 90 days or more past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable	3,796	3,312
Past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable	86,957	74,095
Non-accrual loans with no ACL	20,650	20,722
Non-accrual loans with ACL	88	94
Current loans receivable
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable	16,645,545	16,123,987
Residential real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable	1,752,514	1,704,544
Residential real estate | Accruing loans 30-59 days past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable	8,920	5,342
Residential real estate | Accruing loans 60-89 days past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable	0	729
Residential real estate | Accruing loans 90 days or more past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable	1	107
Residential real estate | Past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable	11,649	8,740
Non-accrual loans with no ACL	2,728	2,562
Non-accrual loans with ACL	0	0
Residential real estate | Current loans receivable
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable	1,740,865	1,695,804
Commercial real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable	10,672,269	10,303,306
Commercial real estate | Accruing loans 30-59 days past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable	12,559	18,134
Commercial real estate | Accruing loans 60-89 days past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable	15,069	2,439
Commercial real estate | Accruing loans 90 days or more past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable	2,683	2,161
Commercial real estate | Past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable	44,267	36,414
Non-accrual loans with no ACL	13,956	13,680
Non-accrual loans with ACL	0	0
Commercial real estate | Current loans receivable
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable	10,628,002	10,266,892
Other commercial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable	3,030,608	2,901,863
Other commercial | Accruing loans 30-59 days past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable	7,082	12,745
Other commercial | Accruing loans 60-89 days past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable	11,026	774
Other commercial | Accruing loans 90 days or more past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable	891	530
Other commercial | Past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable	20,551	15,925
Non-accrual loans with no ACL	1,552	1,869
Non-accrual loans with ACL	0	7
Other commercial | Current loans receivable
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable	3,010,057	2,885,938
Home equity
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable	883,062	888,013
Home equity | Accruing loans 30-59 days past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable	3,395	3,006
Home equity | Accruing loans 60-89 days past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable	295	1,527
Home equity | Accruing loans 90 days or more past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable	172	283
Home equity | Past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable	5,650	6,782
Non-accrual loans with no ACL	1,788	1,966
Non-accrual loans with ACL	0	0
Home equity | Current loans receivable
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable	877,412	881,231
Other consumer
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable	394,049	400,356
Other consumer | Accruing loans 30-59 days past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable	3,229	4,228
Other consumer | Accruing loans 60-89 days past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable	848	1,043
Other consumer | Accruing loans 90 days or more past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable	49	231
Other consumer | Past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable	4,840	6,234
Non-accrual loans with no ACL	626	645
Non-accrual loans with ACL	88	87
Other consumer | Current loans receivable
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable	$ 389,209	$ 394,122

Loans Receivable, Net - Narrati

Loans Receivable, Net - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023
Financing Receivable, Allowance for Credit Losses [Line Items]
Interest reversed on non-accrual loans	$ 25	$ 27
Modified in period, amount	2,159
Modified, commitment to lend	2,753		$ 5,361
Consumer mortgage loans secured by residential real estate properties for which formal foreclosure proceedings are in process	0		98
Residential real estate
Financing Receivable, Allowance for Credit Losses [Line Items]
OREO secured by residential real estate	$ 0		$ 0

Loans Receivable, Net - Collate

Loans Receivable, Net - Collateral-Dependent Loans (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Collateral Dependent Loans
Total	$ 16,732,502	$ 16,198,082
Collateral Pledged
Collateral Dependent Loans
Total	50,135	43,044
Business assets
Collateral Dependent Loans
Total	11,056	3,236
Residential real estate
Collateral Dependent Loans
Total	17,757	17,578
Other real estate
Collateral Dependent Loans
Total	20,794	21,635
Other
Collateral Dependent Loans
Total	528	595
Residential real estate
Collateral Dependent Loans
Total	1,752,514	1,704,544
Residential real estate | Collateral Pledged
Collateral Dependent Loans
Total	11,323	11,134
Residential real estate | Business assets
Collateral Dependent Loans
Total	0	0
Residential real estate | Residential real estate
Collateral Dependent Loans
Total	11,316	11,099
Residential real estate | Other real estate
Collateral Dependent Loans
Total	7	35
Residential real estate | Other
Collateral Dependent Loans
Total	0	0
Commercial real estate
Collateral Dependent Loans
Total	10,672,269	10,303,306
Commercial real estate | Collateral Pledged
Collateral Dependent Loans
Total	24,033	24,921
Commercial real estate | Business assets
Collateral Dependent Loans
Total	4	6
Commercial real estate | Residential real estate
Collateral Dependent Loans
Total	4,235	4,317
Commercial real estate | Other real estate
Collateral Dependent Loans
Total	19,794	20,598
Commercial real estate | Other
Collateral Dependent Loans
Total	0	0
Other commercial
Collateral Dependent Loans
Total	3,030,608	2,901,863
Other commercial | Collateral Pledged
Collateral Dependent Loans
Total	11,972	3,963
Other commercial | Business assets
Collateral Dependent Loans
Total	11,052	3,230
Other commercial | Residential real estate
Collateral Dependent Loans
Total	294	98
Other commercial | Other real estate
Collateral Dependent Loans
Total	612	620
Other commercial | Other
Collateral Dependent Loans
Total	14	15
Home equity
Collateral Dependent Loans
Total	883,062	888,013
Home equity | Collateral Pledged
Collateral Dependent Loans
Total	1,788	1,993
Home equity | Business assets
Collateral Dependent Loans
Total	0	0
Home equity | Residential real estate
Collateral Dependent Loans
Total	1,768	1,968
Home equity | Other real estate
Collateral Dependent Loans
Total	20	25
Home equity | Other
Collateral Dependent Loans
Total	0	0
Other consumer
Collateral Dependent Loans
Total	394,049	400,356
Other consumer | Collateral Pledged
Collateral Dependent Loans
Total	1,019	1,033
Other consumer | Business assets
Collateral Dependent Loans
Total	0	0
Other consumer | Residential real estate
Collateral Dependent Loans
Total	144	96
Other consumer | Other real estate
Collateral Dependent Loans
Total	361	357
Other consumer | Other
Collateral Dependent Loans
Total	$ 514	$ 580

Loans Receivable, Net - Amortiz

Loans Receivable, Net - Amortized Cost Basis for Loans Modified (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Troubled Debt Restructurings
Amortized Cost Basis	$ 66,925	$ 6,637
Interest Rate Reduction
Troubled Debt Restructurings
Amortized Cost Basis	2,758
Term Extension and Payment Deferral
Troubled Debt Restructurings
Amortized Cost Basis	31,397	6,567
Principal Forgiveness
Troubled Debt Restructurings
Amortized Cost Basis	658	10
Combination - Term Extension and Interest Rate Reduction
Troubled Debt Restructurings
Amortized Cost Basis	32,112	60
Residential real estate
Troubled Debt Restructurings
Amortized Cost Basis	1,112
Residential real estate | Interest Rate Reduction
Troubled Debt Restructurings
Amortized Cost Basis	$ 0
% of Total Class	0%
Residential real estate | Term Extension and Payment Deferral
Troubled Debt Restructurings
Amortized Cost Basis	$ 1,112
% of Total Class	0.10%
Residential real estate | Principal Forgiveness
Troubled Debt Restructurings
Amortized Cost Basis	$ 0
% of Total Class	0%
Residential real estate | Combination - Term Extension and Interest Rate Reduction
Troubled Debt Restructurings
Amortized Cost Basis	$ 0
% of Total Class	0%
Commercial real estate
Troubled Debt Restructurings
Amortized Cost Basis	$ 47,919	5,016
Commercial real estate | Interest Rate Reduction
Troubled Debt Restructurings
Amortized Cost Basis	$ 2,758
% of Total Class	0%
Commercial real estate | Term Extension and Payment Deferral
Troubled Debt Restructurings
Amortized Cost Basis	$ 13,978	$ 4,981
% of Total Class	0.10%	0%
Commercial real estate | Principal Forgiveness
Troubled Debt Restructurings
Amortized Cost Basis	$ 658	$ 0
% of Total Class	0%	0%
Commercial real estate | Combination - Term Extension and Interest Rate Reduction
Troubled Debt Restructurings
Amortized Cost Basis	$ 30,525	$ 35
% of Total Class	0.30%	0%
Other commercial
Troubled Debt Restructurings
Amortized Cost Basis	$ 17,772	$ 1,593
Other commercial | Interest Rate Reduction
Troubled Debt Restructurings
Amortized Cost Basis	$ 0
% of Total Class	0%
Other commercial | Term Extension and Payment Deferral
Troubled Debt Restructurings
Amortized Cost Basis	$ 16,185	$ 1,568
% of Total Class	0.50%	0.10%
Other commercial | Principal Forgiveness
Troubled Debt Restructurings
Amortized Cost Basis	$ 0	$ 0
% of Total Class	0%	0%
Other commercial | Combination - Term Extension and Interest Rate Reduction
Troubled Debt Restructurings
Amortized Cost Basis	$ 1,587	$ 25
% of Total Class	0.10%	0%
Home equity
Troubled Debt Restructurings
Amortized Cost Basis	$ 88
Home equity | Interest Rate Reduction
Troubled Debt Restructurings
Amortized Cost Basis	$ 0
% of Total Class	0%
Home equity | Term Extension and Payment Deferral
Troubled Debt Restructurings
Amortized Cost Basis	$ 88
% of Total Class	0%
Home equity | Principal Forgiveness
Troubled Debt Restructurings
Amortized Cost Basis	$ 0
% of Total Class	0%
Home equity | Combination - Term Extension and Interest Rate Reduction
Troubled Debt Restructurings
Amortized Cost Basis	$ 0
% of Total Class	0%
Other consumer
Troubled Debt Restructurings
Amortized Cost Basis	$ 34	$ 28
Other consumer | Interest Rate Reduction
Troubled Debt Restructurings
Amortized Cost Basis	$ 0
% of Total Class	0%
Other consumer | Term Extension and Payment Deferral
Troubled Debt Restructurings
Amortized Cost Basis	$ 34	$ 18
% of Total Class	0%	0%
Other consumer | Principal Forgiveness
Troubled Debt Restructurings
Amortized Cost Basis	$ 0	$ 10
% of Total Class	0%	0%
Other consumer | Combination - Term Extension and Interest Rate Reduction
Troubled Debt Restructurings
Amortized Cost Basis	$ 0	$ 0
% of Total Class	0%	0%

Loans Receivable, Net - Financi

Loans Receivable, Net - Financial Effect of Modifications (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Residential real estate | Interest Rate Reduction
Troubled Debt Restructurings
Weighted Average Interest Rate Reduction	0%
Residential real estate | Weighted Average Term Extension
Troubled Debt Restructurings
Weighted Average Term Extension	1 year 8 months 12 days
Residential real estate | Principal Forgiveness
Troubled Debt Restructurings
Principal Forgiveness	$ 0
Commercial real estate | Interest Rate Reduction
Troubled Debt Restructurings
Weighted Average Interest Rate Reduction	1.24%	2.11%
Commercial real estate | Weighted Average Term Extension
Troubled Debt Restructurings
Weighted Average Term Extension	4 months	10 months
Commercial real estate | Principal Forgiveness
Troubled Debt Restructurings
Principal Forgiveness	$ 0	$ 0
Other commercial | Interest Rate Reduction
Troubled Debt Restructurings
Weighted Average Interest Rate Reduction	0%	0%
Other commercial | Weighted Average Term Extension
Troubled Debt Restructurings
Weighted Average Term Extension	1 year 2 months 12 days	6 months
Other commercial | Principal Forgiveness
Troubled Debt Restructurings
Principal Forgiveness	$ 0	$ 0
Home equity | Interest Rate Reduction
Troubled Debt Restructurings
Weighted Average Interest Rate Reduction	0%
Home equity | Weighted Average Term Extension
Troubled Debt Restructurings
Weighted Average Term Extension	9 months
Home equity | Principal Forgiveness
Troubled Debt Restructurings
Principal Forgiveness	$ 0
Other consumer | Interest Rate Reduction
Troubled Debt Restructurings
Weighted Average Interest Rate Reduction	0%	0%
Other consumer | Weighted Average Term Extension
Troubled Debt Restructurings
Weighted Average Term Extension	1 month	8 months
Other consumer | Principal Forgiveness
Troubled Debt Restructurings
Principal Forgiveness	$ 0	$ 10

Loans Receivable, Net - Perform

Loans Receivable, Net - Performance of Loans Modified in Last Twelve Months (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Mar. 31, 2023
Troubled Debt Restructurings
Total	$ 66,925	$ 6,637
Non-Accrual	4,353	0
Current
Troubled Debt Restructurings
Total	62,540	2,853
30-89 Days Past Due
Troubled Debt Restructurings
Total	32	3,763
90 Days or More Past Due
Troubled Debt Restructurings
Total	0	21
Residential real estate
Troubled Debt Restructurings
Total	1,112
Non-Accrual	0
Residential real estate | Current
Troubled Debt Restructurings
Total	1,112
Residential real estate | 30-89 Days Past Due
Troubled Debt Restructurings
Total	0
Residential real estate | 90 Days or More Past Due
Troubled Debt Restructurings
Total	0
Commercial real estate
Troubled Debt Restructurings
Total	47,919	5,016
Non-Accrual	3,709	0
Commercial real estate | Current
Troubled Debt Restructurings
Total	44,210	1,446
Commercial real estate | 30-89 Days Past Due
Troubled Debt Restructurings
Total	0	3,570
Commercial real estate | 90 Days or More Past Due
Troubled Debt Restructurings
Total	0	0
Other commercial
Troubled Debt Restructurings
Total	17,772	1,593
Non-Accrual	556	0
Other commercial | Current
Troubled Debt Restructurings
Total	17,184	1,379
Other commercial | 30-89 Days Past Due
Troubled Debt Restructurings
Total	32	193
Other commercial | 90 Days or More Past Due
Troubled Debt Restructurings
Total	0	21
Home equity
Troubled Debt Restructurings
Total	88
Non-Accrual	88
Home equity | Current
Troubled Debt Restructurings
Total	0
Home equity | 30-89 Days Past Due
Troubled Debt Restructurings
Total	0
Home equity | 90 Days or More Past Due
Troubled Debt Restructurings
Total	0
Other consumer
Troubled Debt Restructurings
Total	34	28
Non-Accrual	0	0
Other consumer | Current
Troubled Debt Restructurings
Total	34	28
Other consumer | 30-89 Days Past Due
Troubled Debt Restructurings
Total	0	0
Other consumer | 90 Days or More Past Due
Troubled Debt Restructurings
Total	$ 0	$ 0

Loans Receivable, Net - Credit

Loans Receivable, Net - Credit Quality Indicators for Commercial Loans (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023
Credit Quality Indicators By Origination
Gross Charge-Offs	$ 4,295	$ 3,293
Total	16,732,502		$ 16,198,082
Commercial real estate
Credit Quality Indicators By Origination
Gross Charge-Offs, originated current fiscal year	0		889
Gross Charge-Offs, originated fiscal year before current fiscal year	0		430
Gross Charge-Offs, originated two years before current fiscal year	0		145
Gross Charge-Offs, originated three years before current fiscal year	0		0
Gross Charge-Offs, originated four years before current fiscal year	0		0
Gross Charge-Offs, Prior	0		616
Gross Charge-Offs, Revolving loans	0		0
Gross Charge-Offs	0	347	2,080
Term loans originated current fiscal year	375,228		1,316,100
Term loans originated fiscal year before current fiscal year	1,309,692		2,547,939
Term loans originated two years before current fiscal year	2,576,908		2,200,677
Term loans originated three years before current fiscal year	2,234,493		1,130,117
Term loans originated four years before current fiscal year	1,129,734		691,810
Term loans originated five years before current fiscal year	2,758,200		2,129,808
Revolving loans	288,014		286,855
Total	10,672,269		10,303,306
Commercial real estate | Pass
Credit Quality Indicators By Origination
Term loans originated current fiscal year	346,700		1,313,446
Term loans originated fiscal year before current fiscal year	1,306,800		2,520,484
Term loans originated two years before current fiscal year	2,545,228		2,178,153
Term loans originated three years before current fiscal year	2,201,926		1,124,525
Term loans originated four years before current fiscal year	1,118,991		656,203
Term loans originated five years before current fiscal year	2,681,056		2,053,011
Revolving loans	285,967		285,432
Total	10,486,668		10,131,254
Commercial real estate | Special Mention
Credit Quality Indicators By Origination
Term loans originated current fiscal year	525		97
Term loans originated fiscal year before current fiscal year	2,490		12,855
Term loans originated two years before current fiscal year	18,967		19,782
Term loans originated three years before current fiscal year	21,305		0
Term loans originated four years before current fiscal year	4,627		1,104
Term loans originated five years before current fiscal year	12,565		18,818
Revolving loans	198		1
Total	60,677		52,657
Commercial real estate | Substandard
Credit Quality Indicators By Origination
Term loans originated current fiscal year	28,003		2,557
Term loans originated fiscal year before current fiscal year	402		14,600
Term loans originated two years before current fiscal year	12,713		2,742
Term loans originated three years before current fiscal year	11,262		5,592
Term loans originated four years before current fiscal year	6,116		34,503
Term loans originated five years before current fiscal year	64,548		57,948
Revolving loans	847		1,421
Total	123,891		119,363
Commercial real estate | Doubtful/ Loss
Credit Quality Indicators By Origination
Term loans originated current fiscal year	0		0
Term loans originated fiscal year before current fiscal year	0		0
Term loans originated two years before current fiscal year	0		0
Term loans originated three years before current fiscal year	0		0
Term loans originated four years before current fiscal year	0		0
Term loans originated five years before current fiscal year	31		31
Revolving loans	1,002		1
Total	1,033		32
Other commercial
Credit Quality Indicators By Origination
Gross Charge-Offs, originated current fiscal year	1,448		3,080
Gross Charge-Offs, originated fiscal year before current fiscal year	0		406
Gross Charge-Offs, originated two years before current fiscal year	48		0
Gross Charge-Offs, originated three years before current fiscal year	311		92
Gross Charge-Offs, originated four years before current fiscal year	76		0
Gross Charge-Offs, Prior	49		313
Gross Charge-Offs, Revolving loans	0		0
Gross Charge-Offs	1,932	$ 772	3,891
Term loans originated current fiscal year	72,882		369,059
Term loans originated fiscal year before current fiscal year	376,046		566,295
Term loans originated two years before current fiscal year	564,827		531,558
Term loans originated three years before current fiscal year	522,039		245,962
Term loans originated four years before current fiscal year	236,089		145,828
Term loans originated five years before current fiscal year	581,118		448,619
Revolving loans	677,607		594,542
Total	3,030,608		2,901,863
Other commercial | Pass
Credit Quality Indicators By Origination
Term loans originated current fiscal year	72,804		367,337
Term loans originated fiscal year before current fiscal year	374,248		561,567
Term loans originated two years before current fiscal year	559,005		519,151
Term loans originated three years before current fiscal year	509,608		240,613
Term loans originated four years before current fiscal year	229,213		141,336
Term loans originated five years before current fiscal year	556,228		443,400
Revolving loans	661,798		577,953
Total	2,962,904		2,851,357
Other commercial | Special Mention
Credit Quality Indicators By Origination
Term loans originated current fiscal year	32		0
Term loans originated fiscal year before current fiscal year	217		3,319
Term loans originated two years before current fiscal year	1,364		10,187
Term loans originated three years before current fiscal year	10,216		0
Term loans originated four years before current fiscal year	1,926		0
Term loans originated five years before current fiscal year	0		0
Revolving loans	2,501		11,977
Total	16,256		25,483
Other commercial | Substandard
Credit Quality Indicators By Origination
Term loans originated current fiscal year	19		1,603
Term loans originated fiscal year before current fiscal year	1,581		1,408
Term loans originated two years before current fiscal year	4,457		2,218
Term loans originated three years before current fiscal year	2,213		5,347
Term loans originated four years before current fiscal year	4,948		4,490
Term loans originated five years before current fiscal year	24,881		5,219
Revolving loans	12,817		4,612
Total	50,916		24,897
Other commercial | Doubtful/ Loss
Credit Quality Indicators By Origination
Term loans originated current fiscal year	27		119
Term loans originated fiscal year before current fiscal year	0		1
Term loans originated two years before current fiscal year	1		2
Term loans originated three years before current fiscal year	2		2
Term loans originated four years before current fiscal year	2		2
Term loans originated five years before current fiscal year	9		0
Revolving loans	491		0
Total	$ 532		$ 126

Loans Receivable, Net - Credi_2

Loans Receivable, Net - Credit Quality Indicators for RRE and Consumer Loans (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023
Credit Quality Indicators By Origination
Gross Charge-Offs	$ 4,295	$ 3,293
Total	16,732,502		$ 16,198,082
Residential real estate
Credit Quality Indicators By Origination
Gross Charge-Offs, originated current fiscal year	0		0
Gross Charge-Offs, originated fiscal year before current fiscal year	0		5
Gross Charge-Offs, originated two years before current fiscal year	0		0
Gross Charge-Offs, originated three years before current fiscal year	0		0
Gross Charge-Offs, originated four years before current fiscal year	0		0
Gross Charge-Offs, Prior	0		15
Gross Charge-Offs, Revolving loans	0		0
Gross Charge-Offs	0	5	20
Term loans originated current fiscal year	19,177		234,568
Term loans originated fiscal year before current fiscal year	274,053		673,782
Term loans originated two years before current fiscal year	680,095		495,645
Term loans originated three years before current fiscal year	487,436		99,199
Term loans originated four years before current fiscal year	97,272		42,054
Term loans originated five years before current fiscal year	194,211		158,828
Revolving loans	270		468
Total	1,752,514		1,704,544
Residential real estate | Performing
Credit Quality Indicators By Origination
Term loans originated current fiscal year	19,177		233,753
Term loans originated fiscal year before current fiscal year	272,755		671,196
Term loans originated two years before current fiscal year	675,305		495,645
Term loans originated three years before current fiscal year	487,070		99,199
Term loans originated four years before current fiscal year	97,094		42,054
Term loans originated five years before current fiscal year	189,194		153,489
Revolving loans	270		468
Total	1,740,865		1,695,804
Residential real estate | 30-89 Days Past Due
Credit Quality Indicators By Origination
Term loans originated current fiscal year	0		815
Term loans originated fiscal year before current fiscal year	1,298		2,586
Term loans originated two years before current fiscal year	4,790		0
Term loans originated three years before current fiscal year	366		0
Term loans originated four years before current fiscal year	178		0
Term loans originated five years before current fiscal year	2,288		2,670
Revolving loans	0		0
Total	8,920		6,071
Residential real estate | Non-Accrual and 90 Days or More Past Due
Credit Quality Indicators By Origination
Term loans originated current fiscal year	0		0
Term loans originated fiscal year before current fiscal year	0		0
Term loans originated two years before current fiscal year	0		0
Term loans originated three years before current fiscal year	0		0
Term loans originated four years before current fiscal year	0		0
Term loans originated five years before current fiscal year	2,729		2,669
Revolving loans	0		0
Total	2,729		2,669
Home equity
Credit Quality Indicators By Origination
Gross Charge-Offs, originated current fiscal year	0		0
Gross Charge-Offs, originated fiscal year before current fiscal year	15		0
Gross Charge-Offs, originated two years before current fiscal year	0		48
Gross Charge-Offs, originated three years before current fiscal year	0		50
Gross Charge-Offs, originated four years before current fiscal year	0		0
Gross Charge-Offs, Prior	10		31
Gross Charge-Offs, Revolving loans	0		0
Gross Charge-Offs	25	4	129
Term loans originated current fiscal year	0		0
Term loans originated fiscal year before current fiscal year	80		20
Term loans originated two years before current fiscal year	0		0
Term loans originated three years before current fiscal year	132		21
Term loans originated four years before current fiscal year	19		178
Term loans originated five years before current fiscal year	5,285		5,492
Revolving loans	877,546		882,302
Total	883,062		888,013
Home equity | Performing
Credit Quality Indicators By Origination
Term loans originated current fiscal year	0		0
Term loans originated fiscal year before current fiscal year	80		20
Term loans originated two years before current fiscal year	0		0
Term loans originated three years before current fiscal year	132		21
Term loans originated four years before current fiscal year	19		178
Term loans originated five years before current fiscal year	5,195		5,277
Revolving loans	871,986		875,735
Total	877,412		881,231
Home equity | 30-89 Days Past Due
Credit Quality Indicators By Origination
Term loans originated current fiscal year	0		0
Term loans originated fiscal year before current fiscal year	0		0
Term loans originated two years before current fiscal year	0		0
Term loans originated three years before current fiscal year	0		0
Term loans originated four years before current fiscal year	0		0
Term loans originated five years before current fiscal year	10		11
Revolving loans	3,680		4,522
Total	3,690		4,533
Home equity | Non-Accrual and 90 Days or More Past Due
Credit Quality Indicators By Origination
Term loans originated current fiscal year	0		0
Term loans originated fiscal year before current fiscal year	0		0
Term loans originated two years before current fiscal year	0		0
Term loans originated three years before current fiscal year	0		0
Term loans originated four years before current fiscal year	0		0
Term loans originated five years before current fiscal year	80		204
Revolving loans	1,880		2,045
Total	1,960		2,249
Other consumer
Credit Quality Indicators By Origination
Gross Charge-Offs, originated current fiscal year	2,016		7,801
Gross Charge-Offs, originated fiscal year before current fiscal year	95		715
Gross Charge-Offs, originated two years before current fiscal year	136		170
Gross Charge-Offs, originated three years before current fiscal year	30		85
Gross Charge-Offs, originated four years before current fiscal year	22		73
Gross Charge-Offs, Prior	39		131
Gross Charge-Offs, Revolving loans	0		0
Gross Charge-Offs	2,338	$ 2,165	8,975
Term loans originated current fiscal year	34,356		139,295
Term loans originated fiscal year before current fiscal year	120,609		98,630
Term loans originated two years before current fiscal year	88,996		62,961
Term loans originated three years before current fiscal year	57,852		29,143
Term loans originated four years before current fiscal year	24,906		12,335
Term loans originated five years before current fiscal year	26,798		17,314
Revolving loans	40,532		40,678
Total	394,049		400,356
Other consumer | Performing
Credit Quality Indicators By Origination
Term loans originated current fiscal year	32,449		137,035
Term loans originated fiscal year before current fiscal year	120,230		97,536
Term loans originated two years before current fiscal year	88,326		62,107
Term loans originated three years before current fiscal year	57,040		29,012
Term loans originated four years before current fiscal year	24,797		12,279
Term loans originated five years before current fiscal year	26,340		16,664
Revolving loans	40,027		39,489
Total	389,209		394,122
Other consumer | 30-89 Days Past Due
Credit Quality Indicators By Origination
Term loans originated current fiscal year	1,907		2,079
Term loans originated fiscal year before current fiscal year	244		870
Term loans originated two years before current fiscal year	487		805
Term loans originated three years before current fiscal year	658		119
Term loans originated four years before current fiscal year	96		43
Term loans originated five years before current fiscal year	182		173
Revolving loans	503		1,182
Total	4,077		5,271
Other consumer | Non-Accrual and 90 Days or More Past Due
Credit Quality Indicators By Origination
Term loans originated current fiscal year	0		181
Term loans originated fiscal year before current fiscal year	135		224
Term loans originated two years before current fiscal year	183		49
Term loans originated three years before current fiscal year	154		12
Term loans originated four years before current fiscal year	13		13
Term loans originated five years before current fiscal year	276		477
Revolving loans	2		7
Total	$ 763		$ 963

Leases - Summary (Details)

Leases - Summary (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Finance Leases
ROU assets	$ 31,413	$ 31,222
Accumulated depreciation	$ (8,030)	$ (6,940)
Net ROU assets location	Property, Plant, And Equipment And Lease Right Of Use Asset, After Accumulated Depreciation And Amortization	Property, Plant, And Equipment And Lease Right Of Use Asset, After Accumulated Depreciation And Amortization
Net ROU assets	$ 23,383	$ 24,282
Lease liabilities location	Other Borrowings	Other Borrowings
Lease liabilities	$ 24,335	$ 25,116
Operating Leases
Net ROU assets location	Property, Plant, And Equipment And Lease Right Of Use Asset, After Accumulated Depreciation And Amortization	Property, Plant, And Equipment And Lease Right Of Use Asset, After Accumulated Depreciation And Amortization
Net ROU assets	$ 40,065	$ 40,781
Lease liabilities location	Other Liabilities	Other Liabilities
Lease liabilities	$ 43,706	$ 44,319
Finance Leases, Weighted-average remaining lease term	11 years	11 years
Finance Leases, Weighted-average discount rate	3.60%	3.60%
Operating Leases, Weighted-average remaining lease term	16 years	16 years
Operating Leases, Weighted-average discount rate	3.70%	3.70%

Leases - Maturities of Lease Li

Leases - Maturities of Lease Liabilities (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Finance Leases
Maturing within one year	$ 4,716
Maturing one year through two years	4,725
Maturing two years through three years	4,734
Maturing three years through four years	3,701
Maturing four years through five years	581
Thereafter	10,988
Total lease payments	29,445
Present value of lease payments
Short-term	3,911
Long-term	20,424
Total present value of lease payments	24,335	$ 25,116
Difference between lease payments and present value of lease payments	5,110
Operating Leases
Maturing within one year	4,655
Maturing one year through two years	4,749
Maturing two years through three years	4,605
Maturing three years through four years	4,193
Maturing four years through five years	3,730
Thereafter	38,151
Total lease payments	60,083
Present value of lease payments
Short-term	3,134
Long-term	40,572
Total present value of lease payments	43,706	$ 44,319
Difference between lease payments and present value of lease payments	$ 16,377

Leases - Components of Lease Ex

Leases - Components of Lease Expense (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Finance lease cost
Amortization of ROU assets	$ 1,090	$ 1,026
Interest on lease liabilities	224	244
Operating lease cost	1,318	1,496
Short-term lease cost	123	205
Variable lease cost	464	443
Sublease income	(10)	(13)
Total lease expense	$ 3,209	$ 3,401

Leases - Supplemental Cash Flow

Leases - Supplemental Cash Flow Information (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Leases [Abstract]
Finance Leases, Operating cash flows	$ 224	$ 244
Finance Leases, Financing cash flows	948	861
Operating Leases, Operating cash flows	$ 824	$ 926

Goodwill - Schedule of Goodwill

Goodwill - Schedule of Goodwill (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Goodwill Roll Forward
Net carrying value at beginning of period	$ 985,393	$ 985,393
Acquisitions and adjustments	38,369	0
Net carrying value at end of period	$ 1,023,762	$ 985,393

Goodwill - Narrative (Details)

Goodwill - Narrative (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Goodwill and Intangible Assets Disclosure [Abstract]
Accumulated impairment charge	$ 40,159	$ 40,159

Loan Servicing - Changes in Car

Loan Servicing - Changes in Carrying Value (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2024	Dec. 31, 2023
Servicing Asset at Amortized Cost, Balance [Roll Forward]
Carrying value at beginning of period	$ 12,534	$ 13,488
Additions	58	434
Amortization	(294)	(1,388)
Carrying value at end of period	12,298	12,534
Principal balances of loans serviced for others	1,550,129	1,570,834
Fair value of servicing rights	$ 17,933	$ 18,000

Variable Interest Entities - Na

Variable Interest Entities - Narrative (Details) - USD ($)	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023
Variable Interest Entities
Carrying value of equity investments in LIHTCs	$ 189,607,000		$ 83,962,000
Impairment losses	$ 0	$ 0
CDE
Variable Interest Entities
Tax credit period	7 years
LIHTC
Variable Interest Entities
Tax credit period	10 years
Tax credit compliance period	15 years

Variable Interest Entities - VI

Variable Interest Entities - VIE Carrying Amounts Included in Financial Statements (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Assets
Loans receivable	$ 16,533,723	$ 16,005,325
Accrued interest receivable	106,063	94,526
Other assets	312,980	201,132
Total assets	27,822,170	27,742,629
Liabilities
Other borrowed funds	88,814	81,695
Accrued interest payable	32,584	125,907
Other liabilities	349,393	225,786
Total liabilities	24,711,463	24,722,348
Consolidated VIEs
Assets
Loans receivable	147,353	136,527
Accrued interest receivable	587	376
Other assets	78,278	48,924
Total assets	226,218	185,827
Liabilities
Other borrowed funds	64,480	56,578
Accrued interest payable	467	242
Other liabilities	28,655	182
Total liabilities	$ 93,602	$ 57,002

Variable Interest Entities - Fu

Variable Interest Entities - Future Unfunded Contingent Commitments (Details) - Qualified Affordable Housing Project Investments $ in Thousands	Mar. 31, 2024 USD ($)
Other Commitments
2024	$ 50,773
2025	39,759
2026	10,661
2027	355
2028	287
Thereafter	2,337
Total	$ 104,172

Variable Interest Entities - Am

Variable Interest Entities - Amortization Expense and Tax Credits and Other Tax Benefits (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Investments in Qualified Affordable Housing Projects
Amortization expense	$ 5,184	$ 3,949
Tax credits and other tax benefits recognized	$ 6,802	$ 5,283

Securities Sold Under Agreeme_3

Securities Sold Under Agreements to Repurchase - Carrying Value of Repurchase Agreements (Details) - Overnight and Continuous - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Securities Sold Under Agreements to Repurchase
Total	$ 1,540,008	$ 1,486,850
U.S. government and federal agency
Securities Sold Under Agreements to Repurchase
Total	0	113,509
Residential mortgage-backed securities
Securities Sold Under Agreements to Repurchase
Total	1,540,008	1,306,047
Commercial mortgage-backed securities
Securities Sold Under Agreements to Repurchase
Total	$ 0	$ 67,294

Securities Sold Under Agreeme_4

Securities Sold Under Agreements to Repurchase - Narrative (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Financial Instruments Owned and Pledged as Collateral [Line Items]
Debt securities, available-for-sale	$ 4,629,073	$ 4,785,719
Assets pledged as collateral
Financial Instruments Owned and Pledged as Collateral [Line Items]
Debt securities, available-for-sale	$ 1,834,904	$ 1,800,829

Derivatives and Hedging Activ_3

Derivatives and Hedging Activities - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023
Interest rate locks
Interest rate swap derivative financial instruments
Off-balance sheet commitments	$ 58,076		$ 22,738
Other Assets | Interest rate locks
Interest rate swap derivative financial instruments
Gross amounts of recognized assets	1,032		604
Interest rate caps
Interest rate swap derivative financial instruments
Forecasted notional amount	$ 130,500
Derivative, term of contract	5 years
Gross amounts of recognized assets	$ 4,345		4,990
Interest rate expense recorded on interest rate swap	$ 42	$ 42
Interest rate caps | SOFR
Interest rate swap derivative financial instruments
Derivative, basis spread on variable rate	0.26161%
Interest rate caps | Minimum
Interest rate swap derivative financial instruments
Derivative, cap interest rate	1.50%
Interest rate caps | Maximum
Interest rate swap derivative financial instruments
Derivative, cap interest rate	2%
Forward commitments to sell TBA securities
Interest rate swap derivative financial instruments
Forecasted notional amount	$ 34,250		22,000
Forward commitments to sell TBA securities | Other Liabilities
Interest rate swap derivative financial instruments
Derivative asset, fair value, gross liability	$ 124		$ 350

Derivatives and Hedging Activ_4

Derivatives and Hedging Activities - Interest Rate Swap Gains or Losses (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Pre-Tax Gains or Losses
Amount of gain recognized in OCI	$ 657	$ (36)
Interest rate Swap
Pre-Tax Gains or Losses
Amount of gain recognized in OCI	657	(36)
Amount of gain reclassified from OCI to interest expense	$ 1,260	$ 974

Derivatives and Hedging Activ_5

Derivatives and Hedging Activities - Derivatives (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023
Cumulative basis adjustments for fair value hedges
Amortized cost of the Hedged Assets	$ 3,678,606		$ 3,807,239
Hedged Asset, Statement of Financial Position [Extensible Enumeration]	Fair Value		Fair Value
Amortized Cost of Fair Value Hedging Increase (Decrease) Included in the Carrying Amount of the Hedged Assets	$ 1,212		$ 17,988
Interest rate swap
Notional and estimated fair value amount of derivative positions
Notional Amount	1,500,000		1,500,000
Asset Derivative	1,067		0
Liability Derivative	$ 2,279		$ 17,988
Remaining Maturity	1 year 10 months 24 days		2 years 1 month 6 days
Interest rate swap | Interest income on investment securities
Fair value hedge relationships on the income statement
Gain (loss) on fair value hedges recognized in earnings	$ 3,078	$ 0
AFS debt securities | Interest income on investment securities
Fair value hedge relationships on the income statement
Gain (loss) on fair value hedges recognized in earnings	$ (3,078)	$ 0
SOFR | Interest rate swap
Notional and estimated fair value amount of derivative positions
Pay Rate	4.63%		4.63%

Other Expenses - Components of

Other Expenses - Components of Other Expenses (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Other Expenses
Mergers and acquisition expenses	$ 5,725	$ 352
Consulting and outside services	4,727	4,081
Debit card expenses	3,582	2,965
VIE amortization and other expenses	3,308	2,528
Loan expenses	2,299	1,707
Business development	1,648	1,361
Telephone	1,551	1,579
Checking and operating expenses	1,518	666
Employee expenses	1,432	1,295
Postage	1,246	1,118
Accounting and audit fees	822	1,024
Printing and supplies	721	844
Legal fees	423	325
(Gain) loss on dispositions of fixed assets	(1,035)	(15)
Other	2,516	2,302
Total other expenses	$ 30,483	$ 22,132

Accumulated Other Comprehensi_3

Accumulated Other Comprehensive (Loss) Income - Schedule of Activity (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
AOCI Attributable to Parent, Net of Tax
Balance, beginning	$ 3,020,281	$ 2,843,305
Other comprehensive income (loss) before reclassifications	2,020	57,863
Total other comprehensive income, net of tax	1,808	58,564
Balance, ending	3,110,707	2,926,904
Accumulated Other Compre- hensive (Loss) Income
AOCI Attributable to Parent, Net of Tax
Balance, beginning	(374,113)	(468,792)
Balance, ending	(372,305)	(410,228)
AOCI, Accumulated Gain (Loss), Debt Securities, Available-For-Sale, Gains and Transfers Included in Net Income, and Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent
AOCI Attributable to Parent, Net of Tax
Reclassification adjustments	(966)	(704)
(Losses) Gains on Available-For-Sale and Transferred Debt Securities
AOCI Attributable to Parent, Net of Tax
Balance, beginning	(377,728)	(474,338)
Other comprehensive income (loss) before reclassifications	1,527	57,890
Total other comprehensive income, net of tax	2,259	59,319
Balance, ending	(375,469)	(415,019)
Reclassification adjustments for gains and transfers included in net income
AOCI Attributable to Parent, Net of Tax
Reclassification adjustments	(22)	24
Reclassification adjustments for amortization included in net income for transferred securities
AOCI Attributable to Parent, Net of Tax
Reclassification adjustments	754	1,405
(Losses) Gains on Derivatives Used for Cash Flow Hedges
AOCI Attributable to Parent, Net of Tax
Balance, beginning	3,615	5,546
Other comprehensive income (loss) before reclassifications	493	(27)
Reclassification adjustments	(944)	(728)
Total other comprehensive income, net of tax	(451)	(755)
Balance, ending	$ 3,164	$ 4,791

Earnings Per Share - Schedule o

Earnings Per Share - Schedule of Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Basic and Diluted Earnings Per Share
Net income available to common stockholders, basic	$ 32,627	$ 61,211
Net income available to common stockholders, diluted	$ 32,627	$ 61,211
Average outstanding shares - basic (in shares)	112,492,142	110,824,648
Add: dilutive restricted stock units and stock options (in shares)	62,260	57,060
Average outstanding shares - diluted (in shares)	112,554,402	110,881,708
Basic earnings per share (in dollars per share)	$ 0.29	$ 0.55
Diluted earnings per share (in dollars per share)	$ 0.29	$ 0.55
Restricted stock units and stock options excluded from the diluted average outstanding share calculation (in shares)	139,840	205,974

Fair Value of Assets and Liab_3

Fair Value of Assets and Liabilities - Narrative (Details) - USD ($)	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Fair Value, Option, Quantitative Disclosures
Fair value measurement transfers from one level to another	$ 0	$ 0
Loans Held For Sale | Gain (loss) on sale of loans
Fair Value, Option, Quantitative Disclosures
Changes in fair value, gains (losses)	$ (46,000)	$ 119,000

Fair Value of Assets and Liab_4

Fair Value of Assets and Liabilities - Fair Value Measurements on a Recurring Basis (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Financial Assets
Debt securities, available-for-sale	$ 4,629,073	$ 4,785,719
Recurring Measurements
Financial Assets
Loans held for sale, at fair value	27,035	15,691
Total assets measured at fair value on a recurring basis	4,662,552	4,807,004
Total financial liabilities	2,403	18,338
U.S. government and federal agency
Financial Assets
Debt securities, available-for-sale	454,817	455,347
U.S. government and federal agency | Recurring Measurements
Financial Assets
Debt securities, available-for-sale	454,817	455,347
U.S. government sponsored enterprises
Financial Assets
Debt securities, available-for-sale	306,626	299,219
U.S. government sponsored enterprises | Recurring Measurements
Financial Assets
Debt securities, available-for-sale	306,626	299,219
State and local governments
Financial Assets
Debt securities, available-for-sale	97,382	98,932
State and local governments | Recurring Measurements
Financial Assets
Debt securities, available-for-sale	97,382	98,932
Corporate bonds
Financial Assets
Debt securities, available-for-sale	14,206	26,253
Corporate bonds | Recurring Measurements
Financial Assets
Debt securities, available-for-sale	14,206	26,253
Residential mortgage-backed securities
Financial Assets
Debt securities, available-for-sale	2,677,651	2,811,263
Residential mortgage-backed securities | Recurring Measurements
Financial Assets
Debt securities, available-for-sale	2,677,651	2,811,263
Commercial mortgage-backed securities
Financial Assets
Debt securities, available-for-sale	1,078,391	1,094,705
Commercial mortgage-backed securities | Recurring Measurements
Financial Assets
Debt securities, available-for-sale	1,078,391	1,094,705
Interest rate caps | Recurring Measurements
Financial Assets
Derivative assets	4,345	4,990
Interest rate locks | Recurring Measurements
Financial Assets
Derivative assets	1,032	604
Interest rate swap | Recurring Measurements
Financial Assets
Derivative assets	1,067
Derivative liabilities	2,279	17,988
TBA hedge | Recurring Measurements
Financial Assets
Derivative liabilities	124	350
Level 1 | Recurring Measurements
Financial Assets
Loans held for sale, at fair value	0	0
Total assets measured at fair value on a recurring basis	0	0
Total financial liabilities	0	0
Level 1 | U.S. government and federal agency | Recurring Measurements
Financial Assets
Debt securities, available-for-sale	0	0
Level 1 | U.S. government sponsored enterprises | Recurring Measurements
Financial Assets
Debt securities, available-for-sale	0	0
Level 1 | State and local governments | Recurring Measurements
Financial Assets
Debt securities, available-for-sale	0	0
Level 1 | Corporate bonds | Recurring Measurements
Financial Assets
Debt securities, available-for-sale	0	0
Level 1 | Residential mortgage-backed securities | Recurring Measurements
Financial Assets
Debt securities, available-for-sale	0	0
Level 1 | Commercial mortgage-backed securities | Recurring Measurements
Financial Assets
Debt securities, available-for-sale	0	0
Level 1 | Interest rate caps | Recurring Measurements
Financial Assets
Derivative assets	0	0
Level 1 | Interest rate locks | Recurring Measurements
Financial Assets
Derivative assets	0	0
Level 1 | Interest rate swap | Recurring Measurements
Financial Assets
Derivative assets	0
Derivative liabilities	0	0
Level 1 | TBA hedge | Recurring Measurements
Financial Assets
Derivative liabilities	0	0
Level 2 | Recurring Measurements
Financial Assets
Loans held for sale, at fair value	27,035	15,691
Total assets measured at fair value on a recurring basis	4,662,552	4,807,004
Total financial liabilities	2,403	18,338
Level 2 | U.S. government and federal agency | Recurring Measurements
Financial Assets
Debt securities, available-for-sale	454,817	455,347
Level 2 | U.S. government sponsored enterprises | Recurring Measurements
Financial Assets
Debt securities, available-for-sale	306,626	299,219
Level 2 | State and local governments | Recurring Measurements
Financial Assets
Debt securities, available-for-sale	97,382	98,932
Level 2 | Corporate bonds | Recurring Measurements
Financial Assets
Debt securities, available-for-sale	14,206	26,253
Level 2 | Residential mortgage-backed securities | Recurring Measurements
Financial Assets
Debt securities, available-for-sale	2,677,651	2,811,263
Level 2 | Commercial mortgage-backed securities | Recurring Measurements
Financial Assets
Debt securities, available-for-sale	1,078,391	1,094,705
Level 2 | Interest rate caps | Recurring Measurements
Financial Assets
Derivative assets	4,345	4,990
Level 2 | Interest rate locks | Recurring Measurements
Financial Assets
Derivative assets	1,032	604
Level 2 | Interest rate swap | Recurring Measurements
Financial Assets
Derivative assets	1,067
Derivative liabilities	2,279	17,988
Level 2 | TBA hedge | Recurring Measurements
Financial Assets
Derivative liabilities	124	350
Level 3 | Recurring Measurements
Financial Assets
Loans held for sale, at fair value	0	0
Total assets measured at fair value on a recurring basis	0	0
Total financial liabilities	0	0
Level 3 | U.S. government and federal agency | Recurring Measurements
Financial Assets
Debt securities, available-for-sale	0	0
Level 3 | U.S. government sponsored enterprises | Recurring Measurements
Financial Assets
Debt securities, available-for-sale	0	0
Level 3 | State and local governments | Recurring Measurements
Financial Assets
Debt securities, available-for-sale	0	0
Level 3 | Corporate bonds | Recurring Measurements
Financial Assets
Debt securities, available-for-sale	0	0
Level 3 | Residential mortgage-backed securities | Recurring Measurements
Financial Assets
Debt securities, available-for-sale	0	0
Level 3 | Commercial mortgage-backed securities | Recurring Measurements
Financial Assets
Debt securities, available-for-sale	0	0
Level 3 | Interest rate caps | Recurring Measurements
Financial Assets
Derivative assets	0	0
Level 3 | Interest rate locks | Recurring Measurements
Financial Assets
Derivative assets	0	0
Level 3 | Interest rate swap | Recurring Measurements
Financial Assets
Derivative assets	0
Derivative liabilities	0	0
Level 3 | TBA hedge | Recurring Measurements
Financial Assets
Derivative liabilities	$ 0	$ 0

Fair Value of Assets and Liab_5

Fair Value of Assets and Liabilities - Fair Value Measurements on a Non-Recurring Basis (Details) - Non-Recurring Measurements - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Assets with a recorded change resulting from re-measuring at fair value on a non-recurring basis
Other real estate owned		$ 166
Collateral-dependent impaired loans, net of ACL	$ 1,542	1,332
Total assets measured at fair value on a recurring basis	1,542	1,498
Level 1
Assets with a recorded change resulting from re-measuring at fair value on a non-recurring basis
Other real estate owned		0
Collateral-dependent impaired loans, net of ACL	0	0
Total assets measured at fair value on a recurring basis	0	0
Level 2
Assets with a recorded change resulting from re-measuring at fair value on a non-recurring basis
Other real estate owned		0
Collateral-dependent impaired loans, net of ACL	0	0
Total assets measured at fair value on a recurring basis	0	0
Level 3
Assets with a recorded change resulting from re-measuring at fair value on a non-recurring basis
Other real estate owned		166
Collateral-dependent impaired loans, net of ACL	1,542	1,332
Total assets measured at fair value on a recurring basis	$ 1,542	$ 1,498

Fair Value of Assets and Liab_6

Fair Value of Assets and Liabilities - Quantitative Information about Level 3 Fair Value Measurements (Details) - Non-Recurring Measurements $ in Thousands	Mar. 31, 2024 USD ($) Input	Dec. 31, 2023 USD ($)
Quantitative Information About Level 3 Fair Value Measurements
Other real estate owned		$ 166
Collateral-dependent impaired loans, net of ACL	$ 1,542	1,332
Level 3
Quantitative Information About Level 3 Fair Value Measurements
Other real estate owned		166
Collateral-dependent impaired loans, net of ACL	1,542	1,332
Level 3 | Cost approach | Selling costs
Quantitative Information About Level 3 Fair Value Measurements
Collateral-dependent impaired loans, net of ACL	1,248	1,258
Level 3 | Sales comparison approach
Quantitative Information About Level 3 Fair Value Measurements
Other real estate owned		166
Level 3 | Sales comparison approach | Selling costs
Quantitative Information About Level 3 Fair Value Measurements
Collateral-dependent impaired loans, net of ACL	33	$ 74
Level 3 | Combined approach | Selling costs
Quantitative Information About Level 3 Fair Value Measurements
Collateral-dependent impaired loans, net of ACL	$ 261
Level 3 | Minimum | Cost approach | Selling costs
Quantitative Information About Level 3 Fair Value Measurements
Collateral-dependent impaired loans, net of ACL, measurement input	0.100	0.100
Level 3 | Minimum | Sales comparison approach | Selling costs
Quantitative Information About Level 3 Fair Value Measurements
Other real estate owned, measurement input		0
Collateral-dependent impaired loans, net of ACL, measurement input	0.100	0.100
Level 3 | Minimum | Combined approach | Selling costs
Quantitative Information About Level 3 Fair Value Measurements
Collateral-dependent impaired loans, net of ACL, measurement input | Input	0.100
Level 3 | Maximum | Cost approach | Selling costs
Quantitative Information About Level 3 Fair Value Measurements
Collateral-dependent impaired loans, net of ACL, measurement input	0.100	0.100
Level 3 | Maximum | Sales comparison approach | Selling costs
Quantitative Information About Level 3 Fair Value Measurements
Other real estate owned, measurement input		0.100
Collateral-dependent impaired loans, net of ACL, measurement input	0.200	0.100
Level 3 | Maximum | Combined approach | Selling costs
Quantitative Information About Level 3 Fair Value Measurements
Collateral-dependent impaired loans, net of ACL, measurement input | Input	0.100
Level 3 | Weighted Average Range | Cost approach | Selling costs
Quantitative Information About Level 3 Fair Value Measurements
Collateral-dependent impaired loans, net of ACL, measurement input	0.100	0.100
Level 3 | Weighted Average Range | Sales comparison approach | Selling costs
Quantitative Information About Level 3 Fair Value Measurements
Other real estate owned, measurement input		0.081
Collateral-dependent impaired loans, net of ACL, measurement input	0.184	0.100
Level 3 | Weighted Average Range | Combined approach | Selling costs
Quantitative Information About Level 3 Fair Value Measurements
Collateral-dependent impaired loans, net of ACL, measurement input | Input	0.100

Fair Value of Assets and Liab_7

Fair Value of Assets and Liabilities - Carrying Amount and Estimated Fair Value of Financial Instruments Not Carried at Fair Value (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Carrying Amount
Financial assets
Cash and cash equivalents	$ 788,660	$ 1,354,342
Debt securities, held-to-maturity	3,451,583	3,502,411
Loans receivable, net of ACL	16,533,723	16,005,325
Total financial assets	20,773,966	20,862,078
Financial liabilities
Term deposits	3,039,190	2,915,393
FHLB advances	2,140,157
FRB Bank Term Funding		2,740,000
Repurchase agreements and other borrowed funds	1,628,822	1,568,545
Subordinated debentures	132,984	132,943
Total financial liabilities	6,941,153	7,356,881
Estimated Fair Value | Level 1
Financial assets
Cash and cash equivalents	788,660	1,354,342
Debt securities, held-to-maturity	0	0
Loans receivable, net of ACL	0	0
Total financial assets	788,660	1,354,342
Financial liabilities
Term deposits	0	0
FHLB advances	0
FRB Bank Term Funding		0
Repurchase agreements and other borrowed funds	0	0
Subordinated debentures	0	0
Total financial liabilities	0	0
Estimated Fair Value | Level 2
Financial assets
Cash and cash equivalents	0	0
Debt securities, held-to-maturity	3,091,194	3,180,194
Loans receivable, net of ACL	0	0
Total financial assets	3,091,194	3,180,194
Financial liabilities
Term deposits	3,077,983	2,955,521
FHLB advances	2,135,901
FRB Bank Term Funding		2,738,031
Repurchase agreements and other borrowed funds	1,628,822	1,568,545
Subordinated debentures	121,821	119,768
Total financial liabilities	6,964,527	7,381,865
Estimated Fair Value | Level 3
Financial assets
Cash and cash equivalents	0	0
Debt securities, held-to-maturity	0	0
Loans receivable, net of ACL	16,545,822	16,133,681
Total financial assets	16,545,822	16,133,681
Financial liabilities
Term deposits	0	0
FHLB advances	0
FRB Bank Term Funding		0
Repurchase agreements and other borrowed funds	0	0
Subordinated debentures	0	0
Total financial liabilities	$ 0	$ 0

Mergers and Acquisitions - Narr

Mergers and Acquisitions - Narrative (Details) - Community Financial Group, Inc. - USD ($)		2 Months Ended	3 Months Ended
	Jan. 31, 2024	Mar. 31, 2024	Mar. 31, 2024
Business Acquisition
Percentage of outstanding common stock acquired	100%
Value of acquisition	$ 93,156,000
Number of shares issued for acquisition (in shares)	2,389,684
Cash paid for acquisition	$ 771,000
Goodwill, expected tax deductible amount	0
Loans, fair value	452,740,000
Loans receivable acquired, gross principal and contractual interest due	468,882,000
PCD loans acquired	1,655,000
PCD loans acquired, allowance for credit loss	$ 3,000
Acquisition related costs			$ 5,575,000
Net interest income and non-interest income		$ 5,841,000
Net loss		$ 7,650,000

Mergers and Acquisitions - Cons

Mergers and Acquisitions - Consideration Transferred, Identifiable Net Assets Acquired and Goodwill Recognized (Details) - USD ($)	Jan. 31, 2024	Mar. 31, 2024	Dec. 31, 2023	Mar. 31, 2023	Dec. 31, 2022
Liabilities assumed
Goodwill recognized		$ 1,023,762,000	$ 985,393,000	$ 985,393,000	$ 985,393,000
Community Financial Group, Inc.
Fair value of consideration transferred
Fair value of Company shares issued	$ 92,385,000
Cash consideration	771,000
Total fair value of consideration transferred	93,156,000
Identifiable assets acquired
Cash and cash equivalents	31,674,000
Debt securities	187,183,000
Loans receivable, net of ACL	452,737,000
Core deposit intangible	16,936,000
Accrued income and other assets	50,760,000
Total identifiable assets acquired	739,290,000
Liabilities assumed
Deposits	616,955,000
Borrowings	58,500,000
Accrued expenses and other liabilities	9,048,000
Total liabilities assumed	684,503,000
Total identifiable net assets	54,787,000
Goodwill recognized	$ 38,369,000
Core deposit intangible, estimated life	10 years

Mergers and Acquisitions - Pro

Mergers and Acquisitions - Pro Forma Summary (Details) - Community Financial Group, Inc. - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Pro Forma Information
Net interest income and non-interest income	$ 198,925	$ 220,927
Net income	$ 30,602	$ 62,358