First Merchants (FRME) 10-Q 31 Oct 24 2024 Q3 Quarterly report Financial data

Cover Page

Cover Page - shares	9 Months Ended
	Sep. 30, 2024	Oct. 28, 2024
Entity Information [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Sep. 30, 2024
Document Transition Report	false
Entity Registrant Name	FIRST MERCHANTS CORP
Entity Incorporation, State or Country Code	IN
Entity File Number	001-41342
Entity Tax Identification Number	35-1544218
Entity Address, Address Line One	200 East Jackson Street
Entity Address, City or Town	Muncie
Entity Address, State or Province	IN
Entity Address, Postal Zip Code	47305-2814
City Area Code	765
Local Phone Number	747-1500
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		58,671,078
Entity Central Index Key	0000712534
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2024
Document Fiscal Period Focus	Q3
Amendment Flag	false
Common Stock, $0.125 stated value per share
Entity Information [Line Items]
Title of 12(b) Security	Common Stock, $0.125 stated value per share
Trading Symbol	FRME
Security Exchange Name	NASDAQ
Depositary Shares, each representing a 1/100th interest in a share of Non-Cumulative Perpetual Preferred Stock, Series A
Entity Information [Line Items]
Title of 12(b) Security	Depositary Shares, each representing a 1/100th interest in a share of Non-Cumulative Perpetual Preferred Stock, Series A
Trading Symbol	FRMEP
Security Exchange Name	NASDAQ

CONSOLIDATED CONDENSED BALANCE

CONSOLIDATED CONDENSED BALANCE SHEETS - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
ASSETS
Cash and due from banks	$ 84,719	$ 112,649
Interest-bearing deposits	359,126	436,080
Investment securities available for sale	1,553,496	1,627,112
Investment securities held to maturity, net of allowance for credit losses of $245 and $245 (fair value of $1,823,006 and $1,870,374)	2,108,649	2,184,252
Loans held for sale	40,652	18,934
Loans	12,646,808	12,486,027
Less: Allowance for credit losses - loans	(187,828)	(204,934)
Net loans	12,458,980	12,281,093
Premises and equipment	129,582	133,896
Federal Home Loan Bank stock	41,716	41,769
Interest receivable	92,055	97,664
Goodwill	712,002	712,002
Other intangibles	21,599	27,099
Cash surrender value of life insurance	304,613	306,301
Other real estate owned	5,247	4,831
Tax asset, deferred and receivable	86,732	99,883
Other assets	348,384	322,322
TOTAL ASSETS	18,347,552	18,405,887
Deposits:
Noninterest-bearing	2,334,197	2,500,062
Interest-bearing	12,030,903	12,321,391
Total Deposits	14,365,100	14,821,453
Borrowings:
Federal funds purchased	30,000	0
Securities sold under repurchase agreements	124,894	157,280
Federal Home Loan Bank advances	832,629	712,852
Subordinated debentures and other borrowings	93,562	158,644
Total Borrowings	1,081,085	1,028,776
Deposits and other liabilities held for sale	288,476	0
Interest payable	18,089	18,912
Other liabilities	292,429	289,033
Total Liabilities	16,045,179	16,158,174
COMMITMENTS AND CONTINGENT LIABILITIES
STOCKHOLDERS' EQUITY
Common stock value	7,265	7,428
Additional paid-in capital	1,192,683	1,236,506
Retained earnings	1,229,125	1,154,624
Accumulated other comprehensive loss	(151,825)	(175,970)
Total Stockholders' Equity	2,302,373	2,247,713
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	18,347,552	18,405,887
Cumulative Preferred Stock
STOCKHOLDERS' EQUITY
Preferred stock value	125	125
Series A Preferred Stock
STOCKHOLDERS' EQUITY
Preferred stock value	$ 25,000	$ 25,000

CONSOLIDATED CONDENSED BALANC_2

CONSOLIDATED CONDENSED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Allowance for credit losses	$ 245	$ 245
Investment securities held to maturity - fair value	$ 1,823,006	$ 1,870,374
Common Stock, stated value (in dollars per share)	$ 0.125	$ 0.125
Common Stock, authorized (in shares)	100,000,000	100,000,000
Common Stock, issued (in shares)	58,117,115	59,424,122
Common Stock, outstanding (in shares)	58,117,115	59,424,122
Cumulative Preferred Stock
Preferred stock, par value (in dollars per share)	$ 1,000	$ 1,000
Preferred stock, liquidation value (in dollars per share)	$ 1,000	$ 1,000
Preferred Stock, authorized (in shares)	600	600
Preferred Stock, issued (in shares)	125	125
Preferred Stock, outstanding (in shares)	125	125
Series A Preferred Stock
Preferred stock, par value (in dollars per share)	$ 0	$ 0
Preferred stock, liquidation value (in dollars per share)	$ 2,500	$ 2,500
Preferred Stock, authorized (in shares)	10,000	10,000
Preferred Stock, issued (in shares)	10,000	10,000
Preferred Stock, outstanding (in shares)	10,000	10,000

CONSOLIDATED CONDENSED STATEMEN

CONSOLIDATED CONDENSED STATEMENTS OF INCOME - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Loans receivable:
Taxable	$ 206,680	$ 191,705	$ 606,116	$ 550,314
Tax exempt	8,622	8,288	25,242	23,757
Investment securities:
Taxable	9,263	8,590	27,062	26,563
Tax exempt	13,509	13,947	40,733	44,296
Deposits with financial institutions	2,154	5,884	11,642	9,685
Federal Home Loan Bank stock	855	719	2,569	2,281
Total Interest Income	241,083	229,133	713,364	656,896
INTEREST EXPENSE
Deposits	98,856	85,551	296,292	209,437
Federal funds purchased	329	0	455	1,420
Securities sold under repurchase agreements	700	797	2,377	2,624
Federal Home Loan Bank advances	8,544	6,896	21,715	20,775
Subordinated debentures and other borrowings	1,544	2,506	5,781	7,303
Total Interest Expense	109,973	95,750	326,620	241,559
NET INTEREST INCOME	131,110	133,383	386,744	415,337
Provision for credit losses	5,000	2,000	31,500	2,000
NET INTEREST INCOME AFTER PROVISION FOR CREDIT LOSSES	126,110	131,383	355,244	413,337
NONINTEREST INCOME
Net gains and fees on sales of loans	6,764	5,517	15,159	11,548
Increase in cash surrender value of life insurance	1,265	1,210	4,128	3,813
Gains on life insurance benefits	1,490	551	2,148	1,332
Net realized losses on sales of available for sale securities	(9,114)	(1,650)	(9,165)	(4,613)
Other income	1,374	1,229	3,457	2,874
Total Noninterest Income	24,866	27,842	82,838	79,158
NONINTEREST EXPENSES
Salaries and employee benefits	55,223	55,566	165,730	167,778
Net occupancy	6,994	6,837	21,052	20,770
Equipment	6,949	5,698	19,774	18,005
Marketing	1,836	2,369	4,807	4,780
Outside data processing fees	7,150	6,573	21,111	19,290
Printing and office supplies	378	333	1,085	1,150
Intangible asset amortization	1,772	2,182	5,500	6,561
FDIC assessments	3,720	2,981	11,285	7,117
Other real estate owned and foreclosure expenses	942	677	1,849	1,575
Professional and other outside services	3,035	3,833	10,809	12,191
Other expenses	6,630	6,805	19,975	20,950
Total Noninterest Expenses	94,629	93,854	282,977	280,167
INCOME BEFORE INCOME TAX	56,347	65,371	155,105	212,328
Income tax expense	7,160	9,005	18,052	31,021
NET INCOME	49,187	56,366	137,053	181,307
Preferred stock dividends	468	468	1,406	1,406
NET INCOME AVAILABLE TO COMMON STOCKHOLDERS	$ 48,719	$ 55,898	$ 135,647	$ 179,901
Per Share Data:
Basic Net Income Available to Common Stockholders (in dollars per share)	$ 0.84	$ 0.95	$ 2.32	$ 3.04
Diluted Net Income Available to Common Stockholders (in dollars per share)	0.84	0.94	2.31	3.03
Cash Dividends Paid (in dollars per share)	$ 0.35	$ 0.34	$ 1.04	$ 1
Average Diluted Common Shares Outstanding (in shares)	58,289,489	59,502,525	58,628,999	59,465,398
Service charges on deposit accounts
NONINTEREST INCOME
Other income	$ 8,361	$ 7,975	$ 24,482	$ 23,147
Fiduciary and wealth management fees
NONINTEREST INCOME
Other income	8,525	7,394	25,550	22,653
Card payment fees
NONINTEREST INCOME
Other income	5,121	4,716	14,360	14,425
Derivative hedge fees
NONINTEREST INCOME
Other income	736	516	1,488	2,336
Other customer fees
NONINTEREST INCOME
Other income	$ 344	$ 384	$ 1,231	$ 1,643

CONSOLIDATED CONDENSED STATEM_2

CONSOLIDATED CONDENSED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Statement of Comprehensive Income [Abstract]
Net income	$ 49,187	$ 56,366	$ 137,053	$ 181,307
Unrealized gains (losses) on securities available-for-sale:
Unrealized holding gain (loss) arising during the period	67,030	(114,630)	21,399	(90,675)
Reclassification adjustment for losses included in net income	9,114	1,650	9,165	4,613
Tax effect	(15,990)	23,726	(6,419)	18,073
Net of tax	60,154	(89,254)	24,145	(67,989)
Unrealized gain (loss) on cash flow hedges:
Unrealized holding gain (loss) arising during the period	0	(66)	0	(179)
Reclassification adjustment for losses (gains) included in net income	0	0	0	15
Tax effect	0	14	0	34
Net of tax	0	(52)	0	(130)
Total other comprehensive income (loss), net of tax	60,154	(89,306)	24,145	(68,119)
Comprehensive income (loss)	$ 109,341	$ (32,940)	$ 161,198	$ 113,188

CONSOLIDATED CONDENSED STATEM_3

CONSOLIDATED CONDENSED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Cumulative Preferred Stock	Preferred Stock Cumulative Preferred Stock	Preferred Stock Non-Cumulative Preferred Stock	Common Stock	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Loss
Beginning balance (in shares) at Dec. 31, 2022			125	10,000
Beginning balance at Dec. 31, 2022	$ 2,034,770		$ 125	$ 25,000	$ 7,396	$ 1,228,626	$ 1,012,774	$ (239,151)
Beginning balance (in shares) at Dec. 31, 2022					59,170,583
Comprehensive income:
Net income	181,307						181,307
Other comprehensive income (loss), net of tax	(68,119)							(68,119)
Cash dividends on preferred stock	(1,406)						(1,406)
Cash dividends on common stock	(59,713)						(59,713)
Share-based compensation (in shares)					129,092
Share-based compensation	3,792				$ 16	3,776
Stock issued under employee benefit plans (in shares)					21,661
Stock issued under employee benefit plans	590				$ 3	587
Stock issued under dividend reinvestment and stock purchase plan (in shares)					52,061
Stock issued under dividend reinvestment and stock purchase plan	1,603				$ 7	1,596
Stock options exercised (in shares)					65,025
Stock options exercised	1,110				$ 8	1,102
Restricted shares withheld for taxes (in shares)					(40,400)
Restricted shares withheld for taxes	(1,290)				$ (5)	(1,285)
Ending balance (in shares) at Sep. 30, 2023			125	10,000
Ending balance at Sep. 30, 2023	2,092,644		$ 125	$ 25,000	$ 7,425	1,234,402	1,132,962	(307,270)
Ending balance (in shares) at Sep. 30, 2023					59,398,022
Beginning balance (in shares) at Jun. 30, 2023			125	10,000
Beginning balance at Jun. 30, 2023	2,145,565		$ 125	$ 25,000	$ 7,412	1,233,593	1,097,399	(217,964)
Beginning balance (in shares) at Jun. 30, 2023					59,297,148
Comprehensive income:
Net income	56,366						56,366
Other comprehensive income (loss), net of tax	(89,306)							(89,306)
Cash dividends on preferred stock	(468)						(468)
Cash dividends on common stock	(20,335)						(20,335)
Share-based compensation (in shares)					114,435
Share-based compensation	1,360				$ 14	1,346
Stock issued under employee benefit plans (in shares)					8,226
Stock issued under employee benefit plans	210				$ 1	209
Stock issued under dividend reinvestment and stock purchase plan (in shares)					18,524
Stock issued under dividend reinvestment and stock purchase plan	539				$ 3	536
Restricted shares withheld for taxes (in shares)					(40,311)
Restricted shares withheld for taxes	(1,287)				$ (5)	(1,282)
Ending balance (in shares) at Sep. 30, 2023			125	10,000
Ending balance at Sep. 30, 2023	2,092,644		$ 125	$ 25,000	$ 7,425	1,234,402	1,132,962	(307,270)
Ending balance (in shares) at Sep. 30, 2023					59,398,022
Beginning balance (in shares) at Dec. 31, 2023		125	125	10,000
Beginning balance at Dec. 31, 2023	$ 2,247,713		$ 125	$ 25,000	$ 7,428	1,236,506	1,154,624	(175,970)
Beginning balance (in shares) at Dec. 31, 2023	59,424,122				59,424,122
Comprehensive income:
Net income	$ 137,053						137,053
Other comprehensive income (loss), net of tax	24,145							24,145
Cash dividends on preferred stock	(1,406)						(1,406)
Cash dividends on common stock	(61,146)						(61,146)
Repurchases of common stock (in shares)					(1,481,565)
Repurchases of common stock	(49,955)				$ (185)	(49,770)
Reduction of excise tax on common stock repurchases, net of share issuances	(457)					(457)
Share-based compensation (in shares)					83,356
Share-based compensation	4,191				$ 10	4,181
Stock issued under employee benefit plans (in shares)					17,120
Stock issued under employee benefit plans	511				$ 3	508
Stock issued under dividend reinvestment and stock purchase plan (in shares)					48,793
Stock issued under dividend reinvestment and stock purchase plan	$ 1,676				$ 6	1,670
Stock options exercised (in shares)	49,084				49,084
Stock options exercised	$ 900				$ 6	894
Restricted shares withheld for taxes (in shares)					(23,795)
Restricted shares withheld for taxes	(852)				$ (3)	(849)
Ending balance (in shares) at Sep. 30, 2024		125	125	10,000
Ending balance at Sep. 30, 2024	$ 2,302,373		$ 125	$ 25,000	$ 7,265	1,192,683	1,229,125	(151,825)
Ending balance (in shares) at Sep. 30, 2024	58,117,115				58,117,115
Beginning balance (in shares) at Jun. 30, 2024			125	10,000
Beginning balance at Jun. 30, 2024	$ 2,212,525		$ 125	$ 25,000	$ 7,256	1,191,193	1,200,930	(211,979)
Beginning balance (in shares) at Jun. 30, 2024					58,045,653
Comprehensive income:
Net income	49,187						49,187
Other comprehensive income (loss), net of tax	60,154							60,154
Cash dividends on preferred stock	(468)						(468)
Cash dividends on common stock	(20,524)						(20,524)
Reduction of excise tax on common stock repurchases, net of share issuances	25					25
Share-based compensation (in shares)					67,140
Share-based compensation	1,437				$ 8	1,429
Stock issued under employee benefit plans (in shares)					5,351
Stock issued under employee benefit plans	168				$ 1	167
Stock issued under dividend reinvestment and stock purchase plan (in shares)					14,903
Stock issued under dividend reinvestment and stock purchase plan	575				$ 2	573
Stock options exercised (in shares)					6,191
Stock options exercised	88				$ 1	87
Restricted shares withheld for taxes (in shares)					(22,123)
Restricted shares withheld for taxes	(794)				$ (3)	(791)
Ending balance (in shares) at Sep. 30, 2024		125	125	10,000
Ending balance at Sep. 30, 2024	$ 2,302,373		$ 125	$ 25,000	$ 7,265	$ 1,192,683	$ 1,229,125	$ (151,825)
Ending balance (in shares) at Sep. 30, 2024	58,117,115				58,117,115

CONSOLIDATED CONDENSED STATEM_4

CONSOLIDATED CONDENSED STATEMENTS OF STOCKHOLDERS’ EQUITY (Parenthetical) - $ / shares	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Statement of Stockholders' Equity [Abstract]
Cash dividends on preferred stock (in dollars per share)	$ 46.88	$ 46.88	$ 140.64	$ 140.64
Cash dividends on common stock (in dollars per share)	$ 0.35	$ 0.34	$ 1.04	$ 1

CONSOLIDATED CONDENSED STATEM_5

CONSOLIDATED CONDENSED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
Cash Flow From Operating Activities:
Net income	$ 137,053	$ 181,307
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for credit losses	31,500	2,000
Depreciation and amortization	10,602	8,666
Change in deferred taxes	3,128	3,957
Share-based compensation	4,191	3,792
Loans originated for sale	(775,504)	(567,626)
Proceeds from sales of loans held for sale	773,446	551,613
Gains on sales of loans held for sale	(10,508)	(5,865)
Net losses on sales and redemptions of securities available for sale	9,165	4,613
Increase in cash surrender value of life insurance	(4,128)	(3,813)
Gains on life insurance benefits	(2,148)	(1,332)
Change in interest receivable	5,585	(4,941)
Change in interest payable	(319)	8,943
Other adjustments	16,643	11,904
Net cash provided by operating activities	198,706	193,218
Cash Flows from Investing Activities:
Net change in interest-bearing deposits	76,954	(222,578)
Purchases of:
Securities available for sale	(93,463)	(12,543)
Securities held to maturity	0	(5,653)
Proceeds from sales of securities available for sale	149,771	347,318
Proceeds from maturities and redemptions of:
Securities available for sale	33,346	44,925
Securities held to maturity	72,938	76,427
Change in Federal Home Loan Bank stock	53	(3,272)
Payment of capital calls to qualified affordable housing investments	(22,238)	(7,478)
Net change in loans	(206,478)	(404,833)
Proceeds from the sale of other real estate owned	325	1,175
Proceeds from life insurance benefits	7,964	7,350
Other adjustments	(25,046)	(40,257)
Net cash used in investing activities	(885)	(107,295)
Net change in:
Demand and savings deposits	(308,714)	(581,735)
Certificates of deposit and other time deposits	140,074	845,566
Borrowings	551,851	754,229
Repayment of borrowings	(499,542)	(1,043,588)
Cash dividends on preferred stock	(1,406)	(1,406)
Cash dividends on common stock	(61,146)	(59,713)
Stock issued under employee benefit plans	511	590
Stock issued under dividend reinvestment and stock purchase plans	1,676	1,603
Stock options exercised	900	1,110
Repurchase of common stock	(49,955)	0
Net cash used in financing activities	(225,751)	(83,344)
Net Change in Cash and Cash Equivalents	(27,930)	2,579
Cash and Cash Equivalents, January 1	112,649	122,594
Cash and Cash Equivalents, September 30	84,719	125,173
Additional cash flow information:
Interest paid	327,443	232,616
Income tax paid (refunded)	6,407	32,741
Loans transferred to other real estate owned	699	1,224
Fixed assets transferred to other real estate owned	69	3,226
Non-cash investing activities using trade date accounting	17,749	4,462
ROU assets obtained in exchange for new operating lease liabilities	6,918	1,630
Qualified affordable housing investments obtained in exchange for funding commitments	40,500	25,200
Reclassification of loans and other branch assets to held for sale	13,404	0
Reclassification of deposits and other branch liabilities to held for sale	288,476	0
Mortgage Loan
Proceeds from maturities and redemptions of:
Proceeds from portfolio loan sale	1,716	0
Commercial
Proceeds from maturities and redemptions of:
Proceeds from portfolio loan sale	$ 3,273	$ 112,124

GENERAL

GENERAL	9 Months Ended
	Sep. 30, 2024
Organization, Consolidation and Presentation of Financial Statements [Abstract]
GENERAL	GENERAL Financial Statement Preparation The Consolidated Condensed Balance Sheet of the Corporation as of December 31, 2023, has been derived from the audited consolidated balance sheet of the Corporation as of that date. Certain information and note disclosures normally included in the Corporation’s annual financial statements, prepared in accordance with accounting principles generally accepted in the United States of America, have been condensed or omitted. These consolidated condensed financial statements should be read in conjunction with the consolidated financial statements and notes thereto included in the Corporation’s Annual Report on Form 10-K for the year ended December 31, 2023 filed with the Securities and Exchange Commission. The results of operations for the three and nine months ended September 30, 2024, are not necessarily indicative of the results to be expected for the year. Material estimates that are particularly susceptible to significant change relate to the determination of the allowance for credit losses and fair value of financial instruments. Significant Accounting Policies The significant accounting policies followed by the Corporation and its wholly-owned subsidiaries for interim financial reporting are consistent with the accounting policies followed for annual financial reporting. All adjustments, which are of a normal recurring nature and are in the opinion of management necessary for a fair statement of the results for the periods reported, have been included in the accompanying Consolidated Condensed Financial Statements. Recent Accounting Changes Adopted in 2024 FASB Accounting Standards Updates - No. 2023-02 - Investments - Equity Method and Joint Ventures (Topic 323) - Accounting for Investments in Tax Credit Structures Using the Proportional Amortization Method Summary - The FASB issued ASU No. 2023-02, Investments—Equity Method and Joint Ventures (Topic 323): Accounting for Investments in Tax Credit Structures Using the Proportional Amortization Method , which is intended to improve the accounting and disclosures for investments in tax credit structures. The ASU is a consensus of the FASB’s Emerging Issues Task Force (“EITF”). The ASU allows reporting entities to elect to account for qualifying tax equity investments using the proportional amortization method, regardless of the program giving rise to the related income tax credits. The ASU responds to stakeholder feedback that the proportional amortization method provides investors and other allocators of capital with a better understanding of the returns from investments that are made primarily for the purpose of receiving income tax credits and other income tax benefits. Reporting entities were previously permitted to apply the proportional amortization method only to qualifying tax equity investments in low-income housing tax credit (LIHTC) structures. In recent years, stakeholders asked the FASB to extend the application of the proportional amortization method to qualifying tax equity investments that generate tax credits through other programs, which resulted in the EITF addressing this issue. For public business entities, the amendments became effective for fiscal years beginning after December 15, 2023, including interim periods within those fiscal years. For all other entities, the amendments will become effective for fiscal years beginning after December 15, 2024, including interim periods within those fiscal years. Early adoption is permitted for all entities in any interim period. The Corporation adopted this guidance in the first quarter of 2024 and adoption did not have a significant impact on the Corporation’s financial statements or disclosures. New Accounting Pronouncements Not Yet Adopted The Corporation continually monitors potential accounting pronouncements and the following pronouncements have been deemed to have the most applicability to the Corporation's financial statements: FASB Accounting Standards Updates - No. 2023-07 - Segment Reporting (Topic 280) — Improvements to Reportable Segment Disclosure Summary - The FASB issued ASU No. 2023-07, Segment Reporting (Topic 280) - Improvements to Reportable Segment Disclosure , which is intended to improve disclosures about a public entity’s reportable segments and addresses requests from investors and other allocators of capital for additional, more detailed information about a reportable segment’s expenses. The key amendments: • Require that a public entity disclose, on an annual and interim basis, significant segment expenses that are regularly provided to the chief operating decision maker (“CODM”) and included within each reported measure of segment profit or loss. • Require that a public entity disclose, on an annual and interim basis, an amount for other segment items by reportable segment and a description of its composition. The other segment items category is the difference between segment revenue less the significant expenses disclosed and each reported measure of segment profit or loss. • Require that a public entity provide all annual disclosures about a reportable segment’s profit or loss and assets currently required by FASB ASC Topic 280, Segment Reporting, in interim periods. • Clarify that if the CODM uses more than one measure of a segment’s profit or loss in assessing segment performance and deciding how to allocate resources, a public entity may report one or more of those additional measures of segment profit or loss. However, at least one of the reported segment profit or loss measures (or the single reported measure, if only one is disclosed) should be the measure that is most consistent with the measurement principles used in measuring the corresponding amounts in the public entity’s consolidated financial statements. • Require that a public entity disclose the title and position of the CODM and an explanation of how the CODM uses the reported measure(s) of segment profit or loss in assessing segment performance and deciding how to allocate resources. • Require that a public entity that has a single reportable segment provide all the disclosures required by the amendments in the ASU and all existing segment disclosures in Topic 280. ASU No. 2023-07, Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures , applies to all public entities that are required to report segment information in accordance with Topic 280. All public entities will be required to report segment information in accordance with the new guidance starting in annual periods beginning after December 15, 2023 and interim periods within fiscal years beginning after December 15, 2024. This ASU is not expected to have a material impact on the Corporation’s financial statements and disclosures as the Corporation has one operating segment. FASB Accounting Standards Update - No. 2023-09 - Income Taxes (Topic 740): Improvements to Income Tax Disclosures Summary - The FASB issued ASU No. 2023-09, Income Taxes (Topic 740): Improvements to Income Tax Disclosures in the fourth quarter of 2023. This ASU is intended to enhance income tax disclosures to address investor requests for more information about the tax risks and opportunities present in an entity’s worldwide operations. The two primary enhancements disaggregate existing income tax disclosures related to the effective tax rate reconciliation and income taxes paid. These amendments require that public business entities on an annual basis disclose specific categories in the rate reconciliation and provide additional information for reconciling items that meet a quantitative threshold. The amendments also require that all entities disclose on an annual basis the amount of income taxes paid (net of refunds received) disaggregated by federal, state and foreign taxes and the amount of income taxes paid (net of refunds received) disaggregated by individual jurisdictions in which income taxes paid (net of refunds received) is equal to or greater than five percent of total income taxes paid (net of refunds received). For public business entities, the amendments are effective for annual periods beginning after December 15, 2024. Early adoption is permitted for annual financial statements that have not yet been issued or made available for issue. The amendments should be applied on a prospective basis. The Corporation is assessing the terms of this guidance, but adoption of the standard is not expected to have a significant impact on the Corporation’s financial statements or disclosures.

ACQUISITIONS AND DISPOSITIONS

ACQUISITIONS AND DISPOSITIONS	9 Months Ended
	Sep. 30, 2024
Business Combination, Asset Acquisition, and Joint Venture Formation [Abstract]
ACQUISITIONS AND DISPOSITIONS	ACQUISITIONS AND DISPOSITIONS Old Second National Bank Branch Sale On August 26, 2024, the Bank entered into a Branch Purchase and Assumption Agreement with Old Second National Bank, a national banking association headquartered in Aurora, Illinois, pursuant to which the Bank will sell five branches located in Illinois. The transaction will represent an exit from the suburban Chicago markets. Loans of $9.2 million, deposits of $287.7 million and fixed assets of $3.4 million have been moved to held for sale categories as of September 30, 2024. The transaction is expected to close in the fourth quarter of 2024.

INVESTMENT SECURITIES

INVESTMENT SECURITIES	9 Months Ended
	Sep. 30, 2024
Investments, Debt and Equity Securities [Abstract]
INVESTMENT SECURITIES	INVESTMENT SECURITIES The following tables summarize the amortized cost, gross unrealized gains and losses and approximate fair value of investment securities available for sale as of September 30, 2024 and December 31, 2023. Amortized Gross Unrealized Gross Unrealized Fair Available for sale at September 30, 2024 U.S. Government-sponsored agency securities $ 97,670 $ — $ 12,637 $ 85,033 State and municipal 1,090,953 95 106,937 984,111 U.S. Government-sponsored mortgage-backed securities 541,099 2,447 71,500 472,046 Corporate obligations 12,957 — 651 12,306 Total available for sale $ 1,742,679 $ 2,542 $ 191,725 $ 1,553,496 Amortized Gross Unrealized Gross Unrealized Fair Available for sale at December 31, 2023 U.S. Government-sponsored agency securities $ 111,521 $ — $ 16,214 $ 95,307 State and municipal 1,181,029 364 116,222 1,065,171 U.S. Government-sponsored mortgage-backed securities 541,343 462 86,990 454,815 Corporate obligations 12,947 — 1,128 11,819 Total available for sale $ 1,846,840 $ 826 $ 220,554 $ 1,627,112 The following tables summarize the amortized cost, gross unrealized gains and losses, approximate fair value and allowance for credit losses on investment securities held to maturity as of September 30, 2024 and December 31, 2023. Amortized Allowance for Credit Losses Net Carrying Amount Gross Unrealized Gross Unrealized Fair Held to maturity at September 30, 2024 U.S. Government-sponsored agency securities $ 361,335 $ — $ 361,335 $ — $ 53,432 $ 307,903 State and municipal 1,087,980 245 1,087,735 1,157 151,227 937,910 U.S. Government-sponsored mortgage-backed securities 658,079 — 658,079 — 82,382 575,697 Foreign investment 1,500 — 1,500 — 4 1,496 Total held to maturity $ 2,108,894 $ 245 $ 2,108,649 $ 1,157 $ 287,045 $ 1,823,006 Amortized Allowance for Credit Losses Net Carrying Amount Gross Unrealized Gross Unrealized Fair Held to maturity at December 31, 2023 U.S. Government-sponsored agency securities $ 374,002 $ — $ 374,002 $ — $ 64,159 $ 309,843 State and municipal 1,099,201 245 1,098,956 1,625 152,113 948,713 U.S. Government-sponsored mortgage-backed securities 709,794 — 709,794 — 99,448 610,346 Foreign investment 1,500 — 1,500 — 28 1,472 Total held to maturity $ 2,184,497 $ 245 $ 2,184,252 $ 1,625 $ 315,748 $ 1,870,374 Accrued interest on investment securities available for sale and held to maturity at September 30, 2024 and December 31, 2023 of $21.7 million and $25.2 million, respectively, are included in the Interest Receivable line on the Corporation's Consolidated Condensed Balance Sheets. The total amount of accrued interest is excluded from the amortized cost of available for sale and held to maturity securities presented above. In determining the allowance for credit losses on investment securities available for sale that are in an unrealized loss position, the Corporation 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 the income statement. For investment securities available for sale that do not meet the aforementioned criteria, the Corporation evaluates whether the decline in fair value has resulted from credit losses or other factors. In making this assessment, the Corporation considers the extent to which fair value is less than amortized cost, any changes to the rating of the security by a rating agency, and adverse conditions specifically related to the security, among other factors. If this assessment indicates that a credit loss exists, the present value of cash flows expected to be collected from the security are compared to the amortized cost basis of the security. If the present value of cash flows expected to be collected is less than the amortized cost basis, a credit loss exists and an allowance for credit losses is recorded for the credit loss, limited by the amount that the fair value is less than the amortized cost basis. Unrealized losses that have not been recorded through an allowance for credit losses is recognized in other comprehensive loss. Adjustments to the allowance are reported in the income statement as a component of the provision for credit losses. The Corporation has made the accounting policy election to exclude accrued interest receivable on investment securities available for sale from the estimate of credit losses. Investment securities available for sale are charged off against the allowance or, in the absence of any allowance, written down through the income statement when deemed uncollectible or when either of the aforementioned criteria regarding intent or requirement to sell is met. The Corporation did not record an allowance for credit losses on its investment securities available for sale as the unrealized losses were attributable to changes in interest rates, not credit quality. The allowance for credit losses on investment securities held to maturity is a contra asset-valuation account that is deducted from the amortized cost basis of investment securities held to maturity to present the net amount expected to be collected. Investment securities held to maturity are charged off against the allowance when deemed uncollectible. Adjustments to the allowance are reported in the income statement as a component of the provision for credit losses. The Corporation measures expected credit losses on investment securities held to maturity on a collective basis by major security type with each type sharing similar risk characteristics, and considers historical credit loss information that is adjusted for current conditions and reasonable and supportable forecasts. The Corporation has made the accounting policy election to exclude accrued interest receivable on investment securities held to maturity from the estimate of credit losses. With regard to U.S. Government-sponsored agency and U.S. Government-sponsored mortgage-backed securities, all these securities are issued by a U.S. Government-sponsored entity and have an implicit or explicit government guarantee; therefore, no allowance for credit losses has been recorded for these securities. With regard to securities issued by states and municipalities and other investment securities held to maturity, management considers (1) issuer bond ratings, (2) historical loss rates for given bond ratings, (3) the financial condition of the issuer, and (4) whether issuers continue to make timely principal and interest payments under the contractual terms of the securities. Historical loss rates associated with securities having similar grades as those in the Corporation's portfolio have been insignificant. Furthermore, as of September 30, 2024, there were no past due principal and interest payments associated with these securities. The balance of the allowance for credit losses on investment securities held to maturity remained unchanged at $245,000 as of September 30, 2024 and December 31, 2023 based on applying the long-term historical credit rate, as published by Moody's, for similar rated securities. On a quarterly basis, the Corporation monitors the credit quality of investment securities held to maturity through the use of credit ratings. The following table summarizes the amortized cost of investment securities held to maturity at September 30, 2024, aggregated by credit quality indicator. Held to Maturity U.S. Government-sponsored agency securities (1) State and municipal U.S. Government-sponsored mortgage-backed securities (1) Foreign investment Total Credit Rating: Aaa $ 361,335 $ 113,233 $ 658,079 $ — $ 1,132,647 Aa1 — 160,281 — — 160,281 Aa2 — 177,858 — — 177,858 Aa3 — 112,393 — — 112,393 A1 — 141,608 — — 141,608 A2 — 20,313 — — 20,313 Non-rated — 362,294 — 1,500 363,794 Total $ 361,335 $ 1,087,980 $ 658,079 $ 1,500 $ 2,108,894 (1) U.S. Government agency securities and U.S. Government mortgage-backed securities are included within the Aaa credit rating category due to their explicit or implicit government guarantees, which provide a high level of assurance regarding the timely collection of principal and interest payments. The following tables summarize, as of September 30, 2024 and December 31, 2023, investment securities available for sale in an unrealized loss position for which an allowance for credit losses has not been recorded, aggregated by security type and length of time in a continuous unrealized loss position. Less than 12 Months 12 Months or Longer Total Fair Gross Fair Gross Fair Gross Investment securities available for sale at September 30, 2024 U.S. Government-sponsored agency securities $ — $ — $ 85,033 $ 12,637 $ 85,033 $ 12,637 State and municipal 40,136 1,335 934,947 105,602 975,083 106,937 U.S. Government-sponsored mortgage-backed securities 18,916 77 346,666 71,423 365,582 71,500 Corporate obligations — — 12,275 651 12,275 651 Total investment securities available for sale $ 59,052 $ 1,412 $ 1,378,921 $ 190,313 $ 1,437,973 $ 191,725 Less than 12 Months 12 Months or Longer Total Fair Gross Fair Gross Fair Gross Investment securities available for sale at December 31, 2023 U.S. Government-sponsored agency securities $ — $ — $ 95,307 $ 16,214 $ 95,307 $ 16,214 State and municipal 55,514 1,076 963,584 115,146 1,019,098 116,222 U.S. Government-sponsored mortgage-backed securities 11,493 25 422,868 86,965 434,361 86,990 Corporate obligations — — 11,788 1,128 11,788 1,128 Total investment securities available for sale $ 67,007 $ 1,101 $ 1,493,547 $ 219,453 $ 1,560,554 $ 220,554 The following tables summarize investment securities available for sale in an unrealized loss position for which an allowance for credit losses has not been recorded, aggregated by security type and the number of securities in the portfolio as of the dates indicated. Gross Number of Securities Investment securities available for sale at September 30, 2024 U.S. Government-sponsored agency securities $ 12,637 13 State and municipal 106,937 662 U.S. Government-sponsored mortgage-backed securities 71,500 108 Corporate obligations 651 10 Total investment securities available for sale $ 191,725 793 Gross Number of Securities Investment securities available for sale at December 31, 2023 U.S. Government-sponsored agency securities $ 16,214 14 State and municipal 116,222 691 U.S. Government-sponsored mortgage-backed securities 86,990 150 Corporate obligations 1,128 10 Total investment securities available for sale $ 220,554 865 The unrealized losses in the Corporation’s investment portfolio were the result of changes in interest rates and not credit quality. As a result, the Corporation expects to recover the amortized cost basis over the term of the securities. The Corporation does not intend to sell the investments and it is not more likely than not that the Corporation will be required to sell the investments before recovery of their amortized cost basis, which may be maturity. Certain investment securities available for sale are reported in the financial statements at an amount less than their historical cost as indicated in the table below. September 30, 2024 December 31, 2023 Historical cost $ 1,629,698 $ 1,781,108 Fair value 1,437,973 1,560,554 Gross unrealized losses $ 191,725 $ 220,554 Percentage of the Corporation's investment securities available for sale in an unrealized loss position 92.6 % 95.9 % In determining the fair value of the investment securities portfolio, the Corporation utilizes a third party for portfolio accounting services, including market value input, for those securities classified as Level 1 and Level 2 in the fair value hierarchy. The Corporation has obtained an understanding of what inputs are being used by the vendor in pricing the portfolio and how the vendor classified these securities based upon these inputs. From these discussions, the Corporation’s management is comfortable that the classifications are proper. The Corporation has gained trust in the data for two reasons: (a) independent spot testing of the data is conducted by the Corporation through obtaining market quotes from various brokers on a periodic basis; and (b) actual gains or losses resulting from the sale of certain securities has proven the data to be accurate over time. Fair value of securities classified as Level 3 in the valuation hierarchy was determined using a discounted cash flow model that incorporated market estimates of interest rates and volatility in markets that have not been active. The amortized cost and fair value of investment securities available for sale and held to maturity at September 30, 2024 and December 31, 2023, by contractual maturity are shown below. Expected maturities will differ from contractual maturities because issuers may have the right to call or prepay obligations with or without call or prepayment penalties. Securities not due at a single maturity are shown separately. Available for Sale Held to Maturity Amortized Cost Fair Value Amortized Cost Fair Value Maturity Distribution at September 30, 2024 Due in one year or less $ 1,809 $ 1,800 $ 15,139 $ 15,096 Due after one through five years 12,818 12,578 121,204 116,480 Due after five through ten years 162,996 151,369 165,418 151,803 Due after ten years 1,023,957 915,703 1,149,054 963,930 1,201,580 1,081,450 1,450,815 1,247,309 U.S. Government-sponsored mortgage-backed securities 541,099 472,046 658,079 575,697 Total investment securities $ 1,742,679 $ 1,553,496 $ 2,108,894 $ 1,823,006 Available for Sale Held to Maturity Amortized Cost Fair Value Amortized Cost Fair Value Maturity Distribution at December 31, 2023 Due in one year or less $ 1,390 $ 1,382 $ 3,041 $ 3,043 Due after one through five years 24,899 23,372 118,592 111,723 Due after five through ten years 127,948 120,385 135,805 126,461 Due after ten years 1,151,260 1,027,158 1,217,265 1,018,801 1,305,497 1,172,297 1,474,703 1,260,028 U.S. Government-sponsored mortgage-backed securities 541,343 454,815 709,794 610,346 Total investment securities $ 1,846,840 $ 1,627,112 $ 2,184,497 $ 1,870,374 Securities with a carrying value of approximately $3.4 billion and $1.8 billion were pledged at September 30, 2024 and December 31, 2023, respectively, to secure certain deposits and securities sold under repurchase agreements, and for other purposes as permitted or required by law. Pledged securities increased from December 31, 2023 as a result of the Corporation pledging additional securities to the Discount Window at the Federal Reserve Bank to be used as an alternative funding source, if needed. The book value of securities pledged and available under agreements to repurchase amounted to $143.7 million at September 30, 2024 and $181.4 million at December 31, 2023. Gross gains and losses on the sales of investment securities available for sale for the three and nine months ended September 30, 2024 and 2023 are shown below. Three Months Ended September 30, Nine Months Ended September 30, 2024 2023 2024 2023 Sales and redemptions of investment securities available for sale: Gross gains $ 7 $ — $ 7 $ 759 Gross losses (9,121) (1,650) (9,172) (5,372) Net gains (losses) on sales and redemptions of investment securities available for sale $ (9,114) $ (1,650) $ (9,165) $ (4,613)

LOANS AND ALLOWANCE FOR CREDIT

LOANS AND ALLOWANCE FOR CREDIT LOSSES	9 Months Ended
	Sep. 30, 2024
Receivables [Abstract]
LOANS AND ALLOWANCE FOR CREDIT LOSSES	LOANS AND ALLOWANCE FOR CREDIT LOSSES Loan Portfolio and Credit Quality The Corporation's primary lending focus is small business and middle market commercial, commercial real estate, public finance and residential real estate, which results in portfolio diversification. The following tables show the composition of the loan portfolio and credit quality characteristics by collateral classification, excluding loans held for sale. Loans held for sale at September 30, 2024 and December 31, 2023, were $40.7 million and $18.9 million, respectively. The following table illustrates the composition of the Corporation’s loan portfolio by loan class as of the dates indicated. September 30, 2024 December 31, 2023 Commercial and industrial loans $ 4,041,217 $ 3,670,948 Agricultural land, production and other loans to farmers 238,743 263,414 Real estate loans: Construction 814,704 957,545 Commercial real estate, non-owner occupied 2,251,351 2,400,839 Commercial real estate, owner occupied 1,152,751 1,162,083 Residential 2,366,943 2,288,921 Home equity 641,188 617,571 Individuals' loans for household and other personal expenditures 158,480 168,388 Public finance and other commercial loans 981,431 956,318 Loans $ 12,646,808 $ 12,486,027 Credit Quality As part of the ongoing monitoring of the credit quality of the Corporation's loan portfolio, management tracks certain credit quality indicators including trends related to: (i) the level of criticized commercial loans, (ii) net charge-offs, (iii) nonperforming loans, (iv) covenant failures and (v) the general national and local economic conditions. The Corporation utilizes a risk grading of pass, special mention, substandard, doubtful and loss to assess the overall credit quality of large commercial loans. All large commercial credit grades are reviewed at a minimum of once a year for pass grade loans. Loans with grades below pass are reviewed more frequently depending on the grade. A description of the general characteristics of these grades is as follows: • Pass - Loans that are considered to be of acceptable credit quality. • Special Mention - Loans which possess some credit deficiency or potential weakness, which deserves close attention. If left uncorrected, these potential weaknesses may result in deterioration of the repayment prospects for the asset or in the Corporation's credit position at some future date. Special mention assets are not adversely classified and do not expose the Corporation to sufficient risk to warrant adverse classification. • Substandard - Loans that are inadequately protected by the current net worth and paying capacity of the obligor or of the collateral pledged, if any. Assets so classified have a well-defined weakness that jeopardizes the liquidation of the debt. They are characterized by the distinct possibility that the Corporation will sustain some loss if the deficiencies are not corrected. • Doubtful - Loans that have all of the weaknesses of those classified as Substandard. However, based on existing facts, conditions and values, these weaknesses make full collection of principal highly questionable and improbable. • Loss – Loans that are considered uncollectible and of such little value that continuing to carry them as an asset is not warranted. Loans will be classified as Loss when it is neither practical or desirable to defer charging-off or reserving all or a portion of a basically worthless asset, even though partial recovery may be possible at some time in the future. The following tables summarize the risk grading of the Corporation’s loan portfolio and gross charge-offs by loan class and by year of origination for the periods indicated. Consumer loans are not risk graded. For the purposes of this disclosure, consumer loans are classified in the following manner: loans that are less than 30 days past due are Pass, loans 30-89 days past due are Special Mention and loans greater than 89 days past due are Substandard. The entire balance of a loan is considered delinquent if the minimum payment contractually required to be made is not received by the specified due date. September 30, 2024 Term Loans (amortized cost basis by origination year) Revolving loans amortized cost basis Revolving loans converted to term 2024 2023 2022 2021 2020 Prior Total Commercial and industrial loans Pass $ 1,110,731 $ 625,113 $ 259,418 $ 180,272 $ 62,723 $ 53,350 $ 1,495,641 $ 136 $ 3,787,384 Special Mention 14,480 9,872 8,979 2,730 2,731 369 45,459 — 84,620 Substandard 28,078 32,296 24,365 7,007 1,655 1,670 72,482 555 168,108 Doubtful — 1,105 — — — — — — 1,105 Total Commercial and industrial loans 1,153,289 668,386 292,762 190,009 67,109 55,389 1,613,582 691 4,041,217 Current period gross charge-offs 1,178 37,655 242 8,577 498 236 — — 48,386 Agricultural land, production and other loans to farmers Pass 23,646 24,039 33,909 27,872 28,250 32,445 63,526 — 233,687 Special Mention 171 — 245 — — 444 548 — 1,408 Substandard 491 50 936 696 516 86 873 — 3,648 Total Agricultural land, production and other loans to farmers 24,308 24,089 35,090 28,568 28,766 32,975 64,947 — 238,743 Real estate loans: Construction Pass 186,900 227,462 174,201 73,746 6,518 8,851 12,828 — 690,506 Special Mention 35,150 26,805 18,197 13,341 — 6 — — 93,499 Substandard 22,000 — 8,699 — — — — — 30,699 Total Construction 244,050 254,267 201,097 87,087 6,518 8,857 12,828 — 814,704 Commercial real estate, non-owner occupied Pass 278,958 280,167 346,311 413,970 351,260 299,771 21,681 — 1,992,118 Special Mention 81,543 19,499 19,347 23,624 1,768 28,452 — — 174,233 Substandard 31,922 5,778 8,982 6,270 19,606 1,614 — — 74,172 Doubtful 10,828 — — — — — — — 10,828 Total Commercial real estate, non-owner occupied 403,251 305,444 374,640 443,864 372,634 329,837 21,681 — 2,251,351 Current period gross charge-offs — 339 3 — — — — — 342 Commercial real estate, owner occupied Pass 118,117 167,922 173,512 230,821 214,975 144,123 33,613 — 1,083,083 Special Mention 2,220 2,385 8,616 6,545 4,935 1,402 460 — 26,563 Substandard 6,804 12,216 5,204 8,896 2,747 7,083 155 — 43,105 Total Commercial real estate, owner occupied 127,141 182,523 187,332 246,262 222,657 152,608 34,228 — 1,152,751 Current period gross charge-offs — — — — 9 — — — 9 Residential Pass 166,807 421,280 680,588 408,017 339,835 308,575 6,117 13 2,331,232 Special Mention 1,095 1,975 5,436 3,425 1,745 3,585 — — 17,261 Substandard 528 1,478 6,836 4,226 1,066 3,991 325 — 18,450 Total Residential 168,430 424,733 692,860 415,668 342,646 316,151 6,442 13 2,366,943 Current period gross charge-offs — 124 653 123 21 288 — — 1,209 Home equity Pass 6,239 6,674 25,743 54,185 11,864 4,346 516,564 6,766 632,381 Special Mention — — — 421 — 33 3,772 593 4,819 Substandard 62 — 572 561 — 206 1,955 632 3,988 Total Home Equity 6,301 6,674 26,315 55,167 11,864 4,585 522,291 7,991 641,188 Current period gross charge-offs — 10 35 23 — 264 — — 332 Individuals' loans for household and other personal expenditures Pass 37,606 24,496 34,052 11,078 3,097 5,215 39,613 369 155,526 Special Mention 42 461 568 1,507 80 8 286 — 2,952 Substandard — — — — — 2 — — 2 Total Individuals' loans for household and other personal expenditures 37,648 24,957 34,620 12,585 3,177 5,225 39,899 369 158,480 Current period gross charge-offs 130 609 397 149 44 50 — — 1,379 Public finance and other commercial loans Pass 72,229 53,788 204,870 197,319 151,368 301,284 573 — 981,431 Total Public finance and other commercial loans 72,229 53,788 204,870 197,319 151,368 301,284 573 — 981,431 Loans $ 2,236,647 $ 1,944,861 $ 2,049,586 $ 1,676,529 $ 1,206,739 $ 1,206,911 $ 2,316,471 $ 9,064 $ 12,646,808 Total current period gross charge-offs $ 1,308 $ 38,737 $ 1,330 $ 8,872 $ 572 $ 838 $ — $ — $ 51,657 December 31, 2023 Term Loans (amortized cost basis by origination year) Revolving loans amortized Revolving loans converted 2023 2022 2021 2020 2019 Prior cost basis to term Total Commercial and industrial loans Pass $ 1,175,967 $ 474,601 $ 253,148 $ 86,226 $ 47,910 $ 45,020 $ 1,393,756 $ 60 $ 3,476,688 Special Mention 34,356 3,911 1,546 5,149 2,986 241 45,994 — 94,183 Substandard 12,311 20,245 17,733 2,479 1,507 1,512 40,449 144 96,380 Doubtful 857 — — — — — 2,840 — 3,697 Total Commercial and industrial loans 1,223,491 498,757 272,427 93,854 52,403 46,773 1,483,039 204 3,670,948 Current period gross charge-offs 13,973 2,711 576 5,665 78 261 — — 23,264 Agricultural land, production and other loans to farmers Pass 35,633 38,145 31,511 31,048 12,995 25,462 87,534 — 262,328 Special Mention — 266 — — — 122 — — 388 Substandard 58 150 — 454 — 36 — — 698 Total Agricultural land, production and other loans to farmers 35,691 38,561 31,511 31,502 12,995 25,620 87,534 — 263,414 Current period gross charge-offs — — — — — — — — — Real estate loans: Construction Pass 403,578 267,587 198,350 8,372 7,723 2,357 11,735 — 899,702 Special Mention 25,894 — — 20,846 — — — — 46,740 Substandard 1,451 4,330 5,322 — — — — — 11,103 Total Construction 430,923 271,917 203,672 29,218 7,723 2,357 11,735 — 957,545 Current period gross charge-offs — — — — — — — — — Commercial real estate, non-owner occupied Pass 373,378 504,280 535,327 418,553 141,320 200,821 16,744 — 2,190,423 Special Mention 76,382 21,145 7,005 4,531 19,479 27,941 37 — 156,520 Substandard 20,358 10,537 219 20,236 — 2,299 247 — 53,896 Total Commercial real estate, non-owner occupied 470,118 535,962 542,551 443,320 160,799 231,061 17,028 — 2,400,839 Current period gross charge-offs — 66 — — — — — — 66 Commercial real estate, owner occupied Pass 176,750 199,821 256,346 263,522 99,180 77,485 27,369 — 1,100,473 Special Mention 6,712 5,034 9,319 2,460 919 2,902 514 — 27,860 Substandard 18,092 3,712 4,183 4,545 289 2,929 — — 33,750 Total Commercial real estate, owner occupied 201,554 208,567 269,848 270,527 100,388 83,316 27,883 — 1,162,083 Current period gross charge-offs 48 — — — 2 — — — 50 Residential Pass 395,363 695,056 442,495 365,297 98,654 254,718 4,988 83 2,256,654 Special Mention 2,167 5,591 3,202 1,924 1,065 4,837 200 81 19,067 Substandard 804 3,708 2,529 1,199 866 4,063 31 — 13,200 Total Residential 398,334 704,355 448,226 368,420 100,585 263,618 5,219 164 2,288,921 Current period gross charge-offs 101 252 208 3 3 94 — — 661 Home equity Pass 9,375 29,784 61,591 11,084 1,092 3,875 484,330 5,837 606,968 Special Mention — 715 — 1,092 15 2 5,031 149 7,004 Substandard 63 — 727 — — 123 2,589 97 3,599 Total Home Equity 9,438 30,499 62,318 12,176 1,107 4,000 491,950 6,083 617,571 Current period gross charge-offs 69 213 224 149 193 1,596 — — 2,444 Individuals' loans for household and other personal expenditures Pass 35,781 49,295 28,387 6,726 2,070 5,904 38,619 772 167,554 Special Mention 184 246 138 69 — 14 176 — 827 Substandard — 6 — — 1 — — — 7 Total Individuals' loans for household and other personal expenditures 35,965 49,547 28,525 6,795 2,071 5,918 38,795 772 168,388 Current period gross charge-offs 147 770 342 77 62 156 — — 1,554 Public finance and other commercial loans Pass 65,357 208,347 204,863 155,132 91,619 229,355 1,645 — 956,318 Total Public finance and other commercial loans 65,357 208,347 204,863 155,132 91,619 229,355 1,645 — 956,318 Loans $ 2,870,871 $ 2,546,512 $ 2,063,941 $ 1,410,944 $ 529,690 $ 892,018 $ 2,164,828 $ 7,223 $ 12,486,027 Total current period gross charge-offs $ 14,338 $ 4,012 $ 1,350 $ 5,894 $ 338 $ 2,107 $ — $ — $ 28,039 Total past due loans equaled $95.0 million as of September 30, 2024 representing a $15.8 million increase from $79.2 million at December 31, 2023. Loans 30-59 days past due decreased $3.8 million from December 31, 2023 as commercial real estate, non-owner occupied and commercial and industrial decreased $4.3 million and $3.1 million, respectively, which was partially offset by increases in construction and individuals' loans for household and other personal expenditures of $2.5 million and $1.9 million, respectively. Loans 60-89 days past due increased $7.6 million from December 31, 2023 as commercial and industrial increased $6.2 million. Loans 90 days or more past due increased $12.0 million from December 31, 2023 as commercial and industrial, commercial real estate, non-owner occupied and residential increased $1.6 million, $4.9 million and $4.1 million, respectively. The tables below show a past due aging of the Corporation’s loan portfolio, by loan class, as of the dates indicated: September 30, 2024 Current 30-59 Days 60-89 Days 90 Days or More Past Due Total Loans > 90 Days or More Past Due Commercial and industrial loans $ 4,023,016 $ 1,906 $ 7,805 $ 8,490 $ 4,041,217 $ 930 Agricultural land, production and other loans to farmers 238,221 522 — — 238,743 — Real estate loans: Construction 810,536 2,522 1,646 — 814,704 — Commercial real estate, non-owner occupied 2,225,782 8,680 485 16,404 2,251,351 12,989 Commercial real estate, owner occupied 1,150,327 501 891 1,032 1,152,751 — Residential 2,334,312 10,377 6,029 16,225 2,366,943 166 Home equity 632,653 3,212 1,532 3,791 641,188 20 Individuals' loans for household and other personal expenditures 155,526 2,567 385 2 158,480 — Public finance and other commercial loans 981,431 — — — 981,431 — Loans $ 12,551,804 $ 30,287 $ 18,773 $ 45,944 $ 12,646,808 $ 14,105 December 31, 2023 Current 30-59 Days 60-89 Days 90 Days or More Past Due Total Loans > 90 Days or More Past Due Commercial and industrial loans $ 3,657,447 $ 5,021 $ 1,622 $ 6,858 $ 3,670,948 $ 86 Agricultural land, production and other loans to farmers 263,414 — — — 263,414 — Real estate loans: Construction 955,588 — 1,957 — 957,545 — Commercial real estate, non-owner occupied 2,376,184 12,995 195 11,465 2,400,839 — Commercial real estate, owner occupied 1,161,869 — 104 110 1,162,083 — Residential 2,259,496 11,810 5,472 12,143 2,288,921 — Home equity 608,948 3,614 1,647 3,362 617,571 52 Individuals' loans for household and other personal expenditures 167,553 635 192 8 168,388 — Public finance and other commercial loans 956,284 — — 34 956,318 34 Loans $ 12,406,783 $ 34,075 $ 11,189 $ 33,980 $ 12,486,027 $ 172 Loans are reclassified to a nonaccruing status when, in management’s judgment, the collateral value and financial condition of the borrower do not justify accruing interest. At the time the accrual is discontinued, all unpaid accrued interest is reversed against earnings. Interest income accrued in prior years, if any, is charged to the allowance for credit losses. Payments subsequently received on nonaccrual loans are applied to principal. A loan is returned to accrual status when principal and interest are no longer past due and collectability is probable, typically after a minimum of six consecutive months of performance. The following table summarizes the Corporation’s nonaccrual loans by loan class as of the dates indicated. September 30, 2024 December 31, 2023 Nonaccrual Loans Nonaccrual Loans with no Allowance for Credit Losses Nonaccrual Loans Nonaccrual Loans with no Allowance for Credit Losses Commercial and industrial loans $ 8,612 $ 2,459 $ 9,050 $ 1,015 Agricultural land, production and other loans to farmers 81 — 58 — Real estate loans: Construction — — 520 — Commercial real estate, non-owner occupied 23,283 10,175 11,932 11,095 Commercial real estate, owner occupied 3,237 2,577 3,041 2,257 Residential 18,905 — 25,140 — Home equity 4,925 — 3,820 — Individuals' loans for household and other personal expenditures 45 — 19 — Loans $ 59,088 $ 15,211 $ 53,580 $ 14,367 Interest income on nonaccrual loans is recognized only to the extent that cash payments are received in excess of principal due. There was no interest income recognized on nonaccrual loans for the three and nine months ended September 30, 2024 or 2023. Determining fair value for collateral dependent loans requires obtaining a current independent appraisal of the collateral and applying a discount factor, which includes selling costs if applicable, to the value. The fair value of real estate is generally based on appraisals by qualified licensed appraisers. The appraisers typically determine the value of the real estate by utilizing an income or market valuation approach. If an appraisal is not available, the fair value may be determined by using a cash flow analysis. Fair value on other collateral such as business assets is typically ascertained by assessing, either singularly or some combination of, asset appraisals, accounts receivable aging reports, inventory listings and or customer financial statements. Both appraised values and values based on borrower’s financial information are discounted as considered appropriate based on age and quality of the information and current market conditions. The tables below present the amortized cost basis of collateral dependent loans by loan class and their respective collateral type, which are individually evaluated to determine expected credit losses. The total collateral dependent loan balance increased $6.0 million, primarily related to an increase of $21.4 million in commercial real estate, non-owner occupied, partially offset by a decrease of $16.3 million in commercial and industrial, for the nine months ended September 30, 2024. The total related allowance balance decreased $4.4 million, primarily related to a decrease of $9.2 million in commercial and industrial, offset by an increase of $4.8 million in commercial real estate, non-owner occupied, for the nine months ended September 30, 2024. September 30, 2024 Commercial Real Estate Residential Real Estate Other Total Allowance on Collateral Dependent Loans Commercial and industrial loans $ — $ — $ 15,685 $ 15,685 $ 2,312 Real estate loans: Construction — 4 — 4 — Commercial real estate, non-owner occupied 38,959 — — 38,959 4,864 Commercial real estate, owner occupied 10,575 — — 10,575 — Residential — 1,241 — 1,241 198 Home equity — 206 — 206 26 Loans $ 49,534 $ 1,451 $ 15,685 $ 66,670 $ 7,400 December 31, 2023 Commercial Real Estate Residential Real Estate Other Total Allowance on Collateral Dependent Loans Commercial and industrial loans $ — $ — $ 32,029 $ 32,029 $ 11,474 Real estate loans: Construction — 7 — 7 — Commercial real estate, non-owner occupied 17,516 — — 17,516 35 Commercial real estate, owner occupied 9,452 — — 9,452 — Residential — 1,439 — 1,439 230 Home equity — 223 — 223 30 Loans $ 26,968 $ 1,669 $ 32,029 $ 60,666 $ 11,769 In certain situations, the Corporation may modify the terms of a loan to a debtor experiencing financial difficulty. The modifications may include principal forgiveness, interest rate reductions, payment delays, term extensions or combinations of these modifications. The following tables present the amortized cost basis of loans at September 30, 2024 and 2023 that were both experiencing financial difficulty and modified during the three and nine months ended September 30, 2024 and 2023, by class and by type of modification. The percentage of the amortized cost basis of loans that were modified to borrowers in financial distress as compared to the amortized cost basis of each class of financing receivable is also presented below. Three Months Ended September 30, 2024 Loan Modifications Made to Borrowers Experiencing Financial Difficulty Payment Delay Term Extension Combination Payment Delay & Term Extension Combination Interest Rate Reduction & Term Extension Combination Interest Rate Reduction, Term Extension, & Payment Delay % of Total Class of Financing Receivable Commercial and industrial loans $ 9,600 $ 10,333 $ — $ 31 $ — 0.49 % Real estate loans: Construction — 915 22,000 — — 2.81 % Commercial real estate, non-owner occupied — 10,254 — 10,828 — 0.94 % Commercial real estate, owner occupied — 5,841 — — — 0.51 % Residential 493 56 — — 304 0.04 % Home equity — 62 — — — 0.01 % Total $ 10,093 $ 27,461 $ 22,000 $ 10,859 $ 304 Three Months Ended September 30, 2023 Loan Modifications Made to Borrowers Experiencing Financial Difficulty Payment Delay Term Extension Combination Interest Rate Reduction & Term Extension Combination Payment Delay & Term Extension % of Total Class of Financing Receivable Commercial and industrial loans $ 908 $ 7,734 $ 134 $ — 0.25 % Real estate loans: Commercial real estate, non-owner occupied — 11,823 — — 0.50 % Commercial real estate, owner occupied — 6,950 — — 0.60 % Home equity — 63 — — 0.01 % Individuals' loans for household and other personal expenditures — — — 1 — % Total $ 908 $ 26,570 $ 134 $ 1 Nine Months Ended September 30, 2024 Loan Modifications Made to Borrowers Experiencing Financial Difficulty Payment Delay Term Extension Interest Rate Reduction Combination Payment Delay & Term Extension Combination Interest Rate Reduction & Term Extension Combination Interest Rate Reduction, Term Extension, & Payment Delay % of Total Class of Financing Receivable Commercial and industrial loans $ 11,080 $ 12,880 $ 247 $ 17 $ 31 $ — 0.60 % Real estate loans: Construction — 915 — 22,000 — — 2.81 % Commercial real estate, non-owner occupied — 18,933 — — 10,828 — 1.32 % Commercial real estate, owner occupied — 6,208 — — — — 0.54 % Residential 1,931 341 — 283 — 529 0.13 % Home Equity — 62 — 162 — — 0.03 % Total $ 13,011 $ 39,339 $ 247 $ 22,462 $ 10,859 $ 529 Nine Months Ended September 30, 2023 Loan Modifications Made to Borrowers Experiencing Financial Difficulty Payment Delay Term Extension Combination Interest Rate Reduction & Term Extension Combination Payment Delay & Term Extension % of Total Class of Financing Receivable Commercial and industrial loans $ 908 $ 14,822 $ 239 $ — 0.46 % Agricultural land, production and other loans to farmers — 34 — — 0.01 % Real estate loans: Construction — 13 — — — % Commercial real estate, non-owner occupied — 11,823 5,942 — 0.75 % Commercial real estate, owner occupied 5,602 8,642 75 — 1.24 % Residential — — — 472 0.02 % Home equity — 63 — — 0.01 % Individuals' loans for household and other personal expenditures — — — 1 — % Total $ 6,510 $ 35,397 $ 6,256 $ 473 The following tables present the financial effect of the loan modifications presented above to borrowers experiencing financial difficulty for the three and nine months ended September 30, 2024 and 2023. Three Months Ended September 30, 2024 Financial Effect of Loan Modifications Payment Delay Term Extension Combination Payment Delay & Term Extension Combination Interest Rate Reduction & Term Extension Combination Interest Rate Reduction, Term Extension & Payment Delay Commercial and industrial loans Provided payment deferrals with weighted average delayed amounts of $200,000. Extended loans by a weighted average of 6 months. Reduced the weighted average contractual interest rate from 9.50% to 8.05% and extended loans by a weighted average of 48 months. Real estate loans: Construction Extended loans by a weighted average of 6 months. Provided payment deferrals with weighted average delayed amounts of $475,000 and extended loans by a weighted average of 4 months. Commercial real estate, non-owner occupied Extended loans by a weighted average of 8 months. Reduced the weighted average contractual interest rate from 12.38% to 7.88% and extended loans by a weighted average of 8 months. Commercial real estate, owner occupied Extended loans by a weighted average of 8 months. Residential Provided payment deferrals with weighted average delayed amounts of $8,000. Extended loans by a weighted average of 92 months. Provided payment deferrals with weighted average delayed amounts of $14,000, extended loans by a weighted average of 149 months, and reduced the weighted average contractual interest rate from 5.73% to 3.31%. Home equity Extended loans by a weighted average of 6 months. Three Months Ended September 30, 2023 Financial Effect of Loan Modifications Payment Delay Term Extension Combination Interest Rate Reduction & Term Extension Combination Payment Delay & Term Extension Commercial and industrial loans Provided payment deferrals with weighted average delayed amounts of $24,000. Extended loans by a weighted average of 8 months. Reduced the weighted average contractual interest rate from 10.75% to 7.62%. Extended loans by a weighted average of 14 months. Real estate loans: Commercial real estate, non-owner occupied Extended loans by a weighted average of 11 months. Commercial real estate, owner occupied Extended loans by a weighted average of 4 months. Home Equity Extended loans by a weighted average of 5 months. Individuals' loans for household and other personal expenditures Provided payment deferrals with weighted average delayed amounts of $300. Extended loans by a weighted average of 3 months. Nine Months Ended September 30, 2024 Financial Effect of Loan Modifications Payment Delay Term Extension Interest Rate Reduction Combination Payment Delay & Term Extension Combination Interest Rate Reduction & Term Extension Combination Interest Rate Reduction, Term Extension & Payment Delay Commercial and industrial loans Provided payment deferrals with weighted average delayed amounts of $180,000. Extended loans by a weighted average of 9 months. Reduced the weighted average contractual interest rate from 9.00% to 8.00%. Provided payment deferrals with weighted average delayed amounts of $4,900 and extended loans by a weighted average of 3 months. Reduced the weighted average contractual interest rate from 9.50% to 8.05%. Extended loans by a weighted average of 48 months. Real estate loans: Construction Extended loans by a weighted average of 6 months. Provided payment deferrals with weighted average delayed amounts of $475,000 and extended loans by a weighted average of 4 months. Commercial real estate, non-owner occupied Extended loans by a weighted average of 13 months. Reduced the weighted average contractual interest rate from 12.38% to 7.88%. Extended loans by a weighted average of 8 months. Commercial real estate, owner occupied Extended loans by a weighted average of 13 months. Residential Provided payment deferrals with weighted average delayed amounts of $26,000. Extended loans by a weighted average of 20 months. Provided payment deferrals with weighted average delayed amounts of $8,000 and extended loans by a weighted average of 153 months. Provided payment deferrals with weighted average delayed amounts of $14,000, extended loans by a weighted average of 91 months, and reduced the weighted average contractual interest rate from 5.74% to 4.03%. Home Equity Extended loans by a weighted average of 6 months. Provided payment deferrals with weighted average delayed amounts of $7,800 and extended loans by a weighted average of 60 months. Nine Months Ended September 30, 2023 Financial Effect of Loan Modifications Payment Delay Term Extension Combination Interest Rate Reduction & Term Extension Combination Payment Delay & Term Extension Commercial and industrial loans Provided payment deferrals with weighted average delayed amounts of $24,000 Extended loans by a weighted average of 8 months. Reduced the weighted average contractual interest rate from 9.66% to 7.39%. Extended loans by a weighted average of 13 months. Agricultural land, production and other loans to farmers Extended loans by a weighted average of 60 months. Real estate loans: Construction Extended loans by a weighted average of 24 months. Commercial real estate, non-owner occupied Extended loans by a weighted average of 10 months. Reduced the weighted average contractual interest rate from 7.81% to 7.40%. Extended loans by a weighted average of 41 months. Commercial real estate, owner occupied Provided payment deferrals with weighted average delayed amounts of $4,500,000. Extended loans by a weighted average of 4 months. Reduced the weighted average contractual interest rate from 10.25% to 6.61%. Extended loans by a weighted average of 114 months. Residential Provided payment deferrals with weighted average delayed amounts $3,400. Extended loans by a weighted average of 3 months. Home Equity Extended loans by a weighted average of 5 months. Provided payment deferrals with weighted average delayed amounts $300. Extended loans by a weighted average of 3 months. The Corporation closely monitors the performance of financial difficulty modifications to understand the effectiveness of its efforts. The following tables present the performance of financial difficulty modifications in the twelve months following modification. September 30, 2024 Current 30-59 Days Past Due 60-89 Days Past Due 90+ Days Past Due Total Commercial and industrial loans $ 24,445 $ — $ 1,927 $ — $ 26,372 Agricultural land, production and other loans to farmers 22 — — — 22 Real estate loans: — Construction 22,915 — — — 22,915 Commercial real estate, non-owner occupied 21,082 8,680 — 1,730 31,492 Commercial real estate, owner occupied 7,523 — — — 7,523 Residential 1,940 — 250 1,189 3,379 Home equity 252 — — — 252 Total $ 78,179 $ 8,680 $ 2,177 $ 2,919 $ 91,955 September 30, 2023 Current 30-59 Days Past Due 60-89 Days Past Due Total Commercial and industrial loans $ 15,863 $ — $ 106 $ 15,969 Agricultural land, production and other loans to farmers 34 — — 34 Real estate loans: — Construction 13 — — 13 Commercial real estate, non-owner occupied 17,765 — — 17,765 Commercial real estate, owner occupied 13,157 — 1,162 14,319 Residential 472 — — 472 Home equity 63 — — 63 Individuals' loans for household and other personal expenditures — 1 — 1 Total $ 47,367 $ 1 $ 1,268 $ 48,636 During the three and nine months ended September 30, 2024, there were payment defaults of $1.7 million and $2.9 million, respectively, on loans to borrowers whose loans were modified due to financial difficulties within the previous twelve months. The payment defaults did not materially impact the allowance for credit losses on loans. There were no payment defaults during the three and nine months ended September 30, 2023 on loans that had been modified within the previous twelve months. Upon the Corporation's determination that a modified loan (or portion of a loan) has subsequently been deemed uncollectible, the loan (or portion of the loan) is charged-off. Therefore, the amortized cost basis of the loan is reduced by the uncollectible amount and the allowance for credit losses is adjusted by the same amount. Allowance for Credit Losses on Loans The Allowance for Credit Losses on Loans ("ACL - Loans") is a valuation account that is deducted from the amortized cost basis of loans to present the net amount expected to be collected on loans over the contractual term. The ACL - Loans is adjusted by the provision for credit losses, which is reported in earnings, and reduced by charge-offs for loans, net of recoveries. Provision for credit losses on loans reflects the totality of actions taken on all loans for a particular period including any necessary increases or decreases in the allowance related to changes in credit loss expectations associated with specific loans or pools of loans. Loans are charged-off against the allowance when the uncollectibility of the loan is confirmed. Expected recoveries do not exceed the aggregate of amounts previously charged-off and expected to be charged-off. The allowance represents the Corporation’s best estimate of current expected credit losses on loans using relevant available information from internal and external sources, related to past events, current conditions, and reasonable and supportable forecasts. Historical credit loss experience provides the basis for the estimation of expected credit losses. The CECL calculation is performed and evaluated quarterly and losses are estimated over the expected life of the loan. The level of the allowance for credit losses is believed to be adequate to absorb all expected future losses inherent in the loan portfolio at the measurement date. In calculating the allowance for credit losses, the loan portfolio was pooled into ten loan segments with similar risk characteristics. Common characteristics include the type or purpose of the loan, underlying collateral and historical/expected credit loss patterns. In developing the loan segments, the Corporation analyzed the degree of correlation in how loans within each portfolio respond when subjected to varying economic conditions and scenarios as well as other portfolio stress factors. The expected credit losses are measured over the life of each loan segment utilizing the Probability of Default / Loss Given Default methodology combined with economic forecast models to estimate the current expected credit loss inherent in the loan portfolio. This approach is also leveraged to estimate the expected credit losses associated with unfunded loan commitments incorporating expected utilization rates. The Corporation sub-segmented certain commercial portfolios by risk level and certain consumer portfolios

DERIVATIVE FINANCIAL INSTRUMENT

DERIVATIVE FINANCIAL INSTRUMENTS	9 Months Ended
	Sep. 30, 2024
Derivative Instruments and Hedging Activities Disclosure [Abstract]
DERIVATIVE FINANCIAL INSTRUMENTS	DERIVATIVE FINANCIAL INSTRUMENTS Risk Management Objective of Using Derivatives The Corporation is exposed to certain risks arising from both its business operations and economic conditions. The Corporation principally manages its exposures to a wide variety of business and operational risks through management of its core business activities. The Corporation manages economic risks, including interest rate, liquidity, and credit risk, primarily by managing the amount, sources, and duration of its assets and liabilities and through the use of derivative financial instruments. Specifically, the Corporation enters into derivative financial instruments to manage exposures that arise from business activities that result in the receipt or payment of future known and uncertain cash amounts, the value of which are determined by interest rates. The Corporation’s derivative financial instruments are used to manage differences in the amount, timing, and duration of the Corporation’s known or expected cash payments principally related to certain variable-rate liabilities. The Corporation also has derivatives that are a result of a service the Corporation provides to certain qualifying customers, and, therefore, are not used to manage interest rate risk in the Corporation’s assets or liabilities. The Corporation manages a matched book with respect to its derivative instruments offered as a part of this service to its customers in order to minimize its net risk exposure resulting from such transactions. Derivatives Designated as Hedges The Corporation’s objectives in using interest rate derivatives are to add stability to interest expense and to manage its exposure to interest rate movements. To accomplish these objectives, the Corporation primarily uses interest rate swaps and interest rate caps as part of its interest rate risk management strategy. Interest rate swaps designated as cash flow hedges involve the payment of fixed amounts to a counterparty in exchange for the Corporation receiving variable payments over the life of the agreements without exchange of the underlying notional amount. Interest rate caps designated as cash flow hedges involve the receipt of variable amounts from a counterparty if interest rates rise above the strike rate on the contract in exchange for an up-front premium. As of September 30, 2024 and December 31, 2023 the Corporation had no interest rate swaps or caps designated as hedges. The effective portion of changes in the fair value of derivatives designated and that qualify as cash flow hedges is recorded in accumulated other comprehensive loss. The ineffective portion of the change in fair value of the derivatives is recognized directly in earnings. During the three and nine months ended September 30, 2024 and 2023, the Corporation did not recognize any ineffectiveness. Amounts reported in accumulated other comprehensive loss related to derivatives will be reclassified to interest expense as interest payments are made on the Corporation's variable-rate liabilities. During the next twelve months, the Corporation doesn't expect to reclassify income (loss) associated with derivatives from accumulated other comprehensive loss to interest expense. The amount of loss recognized in other comprehensive income (loss) is included in the table below for the periods indicated. Derivatives in Cash Flow Hedging Relationships Amount of Loss Recognized in Other Comprehensive Income (Loss) on Derivatives Three Months Ended Nine Months Ended September 30, 2024 September 30, 2023 September 30, 2024 September 30, 2023 Interest Rate Products $ — $ (66) $ — $ (179) The amount of gain (loss) reclassified from accumulated other comprehensive loss into income related to cash flow hedging relationships is included in the tables below for the periods indicated. Derivatives Designated as Location of Gain (Loss) Amount of Gain Reclassed from Accumulated Other Comprehensive Loss into Income (Effective Portion) Three Months Ended September 30, 2024 Three Months Ended September 30, 2023 Interest rate contracts Interest Expense $ — $ — Derivatives Designated as Location of Gain (Loss) Amount of Gain Reclassed from Accumulated Other Comprehensive Loss into Income (Effective Portion) Nine Months Ended September 30, 2024 Nine Months Ended September 30, 2023 Interest rate contracts Interest Expense $ — $ (15) Non-designated Hedges The Corporation does not use derivatives for trading or speculative purposes. Derivatives not designated as hedges are not speculative and result from a service the Corporation provides to certain customers. The Corporation executes interest rate swaps with commercial banking customers to facilitate their respective risk management strategies. Those interest rate swaps are simultaneously hedged by offsetting interest rate swaps that the Corporation executes with a third party, such that the Corporation minimizes its net risk exposure resulting from such transactions. As the interest rate swaps associated with this program do not meet the strict hedge accounting requirements, changes in the fair value of both the customer swaps and the offsetting swaps are recognized directly in earnings. Commitments to fund certain mortgage loans (interest rate locks) to be sold into the secondary market and forward commitments for the future delivery of mortgage loans to third party investors are considered derivatives. It is the Corporation's practice to enter into forward commitments for the future delivery of residential mortgage loans when interest rate lock commitments are entered into in order to economically hedge the effect of changes in interest rates resulting from its commitments to fund the loans. These mortgage banking derivatives are not designated in hedge relationships. Fair values were estimated based on changes in mortgage interest rates from the date of the commitments. Changes in the fair value of these mortgage banking derivatives are included in net gains and fees on sales of loans. The table below presents the fair value of the Corporation’s non-designated hedges, as well as their classification on the Consolidated Condensed Balance Sheets, as of September 30, 2024, and December 31, 2023. September 30, 2024 December 31, 2023 Notional Amount Fair Value Notional Amount Fair Value Included in other assets: Interest rate swaps $ 1,333,382 $ 61,207 $ 1,355,947 $ 78,743 Forward contracts related to mortgage loans to be delivered for sale 80,528 840 15,160 469 Interest rate lock commitments 38,639 223 22,706 167 Included in other assets $ 1,452,549 $ 62,270 $ 1,393,813 $ 79,379 Included in other liabilities: Interest rate swaps $ 1,332,410 $ 61,248 $ 1,355,947 $ 78,811 Forward contracts related to mortgage loans to be delivered for sale 16,500 61 25,290 191 Interest rate lock commitments 28,135 77 1,025 6 Included in other liabilities $ 1,377,045 $ 61,386 $ 1,382,262 $ 79,008 In the normal course of business, the Corporation may decide to settle a forward contract rather than fulfill the contract. Cash received or paid in this settlement manner is included in "Net gains and fees on sales of loans" in the Consolidated Condensed Statements of Income and is considered a cost of executing a forward contract. The amount of gain (loss) recognized into income related to non-designated hedging instruments is included in the tables below for the periods indicated. Derivatives Not Designated as Location of Gain (Loss) Amount of Gain (Loss) Three Months Ended September 30, 2024 Three Months Ended September 30, 2023 Forward contracts related to mortgage loans to be delivered for sale Net gains and fees on sales of loans $ (966) $ 982 Interest rate lock commitments Net gains and fees on sales of loans 30 (100) Total net gain (loss) recognized in income $ (936) $ 882 Derivatives Not Designated as Location of Gain (Loss) Amount of Gain (Loss) Nine Months Ended September 30, 2024 Nine Months Ended September 30, 2023 Forward contracts related to mortgage loans to be delivered for sale Net gains and fees on sales of loans $ (573) $ 1,691 Interest rate lock commitments Net gains and fees on sales of loans (15) (133) Total net gain/(loss) recognized in income $ (588) $ 1,558 The Corporation’s exposure to credit risk occurs because of nonperformance by its counterparties. The counterparties approved by the Corporation are usually financial institutions, which are well capitalized and have credit ratings through Moody’s and/or Standard & Poor’s at or above investment grade. The Corporation’s mitigation of such risk is through quarterly financial reviews, comparing mark-to-market values with policy limitations, credit ratings and collateral pledging. Credit-risk-related Contingent Features The Corporation has agreements with certain of its derivative counterparties that contain a provision where if the Corporation fails to maintain its status as a well or adequately capitalized institution, then the Corporation could be required to terminate or fully collateralize all outstanding derivative contracts. Additionally, the Corporation has agreements with certain of its derivative counterparties that contain a provision where if the Corporation defaults on any of its indebtedness, including default where repayment of the indebtedness has not been accelerated by the lender, then the Corporation could also be declared in default on its derivative obligations. As of September 30, 2024, the termination value of derivatives in a net liability position related to these agreements was $12.6 million, which resulted in $1.3 million of collateral pledged to counterparties as of September 30, 2024. While the Corporation did not breach any of these provisions as of September 30, 2024, if it had, the Corporation could have been required to settle its obligations under the agreements at their termination value.

FAIR VALUES OF FINANCIAL INSTRU

FAIR VALUES OF FINANCIAL INSTRUMENTS	9 Months Ended
	Sep. 30, 2024
Fair Value Disclosures [Abstract]
FAIR VALUES OF FINANCIAL INSTRUMENTS	FAIR VALUES OF FINANCIAL INSTRUMENTS The Corporation used fair value measurements to record fair value adjustments to certain assets and liabilities and to determine fair value disclosures. The accounting guidance defines fair value, establishes a framework for measuring fair value and expands disclosures about fair value measurements. ASC 820 applies only when other guidance requires or permits assets or liabilities to be measured at fair value; it does not expand the use of fair value in any new circumstances. As defined in ASC 820, fair value is the price to sell an asset or transfer a liability in an orderly transaction between market participants. It represents an exit price at the measurement date. Market participants are buyers and sellers, who are independent, knowledgeable, and willing and able to transact in the principal (or most advantageous) market for the asset or liability being measured. Current market conditions, including imbalances between supply and demand, are considered in determining fair value. The Corporation values its assets and liabilities in the principal market where it sells the particular asset or transfers the liability with the greatest volume and level of activity. In the absence of a principal market, the valuation is based on the most advantageous market for the asset or liability (i.e., the market where the asset could be sold or the liability transferred at a price that maximizes the amount to be received for the asset or minimizes the amount to be paid to transfer the liability). Valuation inputs refer to the assumptions market participants would use in pricing a given asset or liability. Inputs can be observable or unobservable. Observable inputs are those assumptions which market participants would use in pricing the particular asset or liability. These inputs are based on market data and are obtained from a source independent of the Corporation. Unobservable inputs are assumptions based on the Corporation’s own information or estimate of assumptions used by market participants in pricing the asset or liability. Unobservable inputs are based on the best and most current information available on the measurement date. All inputs, whether observable or unobservable, are ranked in accordance with a prescribed fair value hierarchy which gives the highest ranking to quoted prices (unadjusted) in active markets for identical assets or liabilities (Level 1) and the lowest ranking to unobservable inputs for which there is little or no market activity (Level 3). Fair values for assets or liabilities classified as Level 2 are based on one or a combination of the following factors: (i) quoted prices for similar assets; (ii) observable inputs for the asset or liability, such as interest rates or yield curves; or (iii) inputs derived principally from or corroborated by observable market data. The level in the fair value hierarchy within which the fair value measurement in its entirety falls is determined based on the lowest level input that is significant to the fair value measurement in its entirety. The Corporation considers an input to be significant if it drives 10 percent or more of the total fair value of a particular asset or liability. RECURRING MEASUREMENTS Assets and liabilities are considered to be measured at fair value on a recurring basis if fair value is measured regularly (i.e., daily, weekly, monthly or quarterly). Recurring valuation occurs at a minimum on the measurement date. Assets and liabilities are considered to be measured at fair value on a nonrecurring basis if the fair value measurement of the instrument does not necessarily result in a change in the amount recorded on the balance sheet. Generally, nonrecurring valuation is the result of the application of other accounting pronouncements which require assets or liabilities to be assessed for impairment and recorded at the lower of cost or fair value. The fair value of assets or liabilities transferred in or out of Level 3 is measured on the transfer date, with any additional changes in fair value subsequent to the transfer considered to be realized or unrealized gains or losses. Following is a description of the valuation methodologies used for instruments measured at fair value on a recurring basis and recognized in the accompanying balance sheets, as well as the general classification of such instruments pursuant to the valuation hierarchy. Investment Securities Where quoted prices are available in an active market, securities are classified within Level 1 of the valuation hierarchy. There were no Level 1 securities. Where significant observable inputs, other than Level 1 quoted prices, are available, securities are classified within Level 2 of the valuation hierarchy. Level 2 securities include U.S. Government-sponsored agency and mortgage-backed securities, state and municipal securities and corporate obligations securities. In certain cases where Level 1 or Level 2 inputs are not available, securities are classified within Level 3 of the hierarchy and include state and municipal securities, U.S. Government-sponsored mortgage-backed securities and corporate obligations securities. Level 3 fair value for securities was determined using a discounted cash flow model that incorporated market estimates of interest rates and volatility in markets that have not been active. Third party vendors compile prices from various sources and may apply such techniques as matrix pricing to determine the value of identical or similar investment securities (Level 2). Matrix pricing is a mathematical technique widely used in the banking industry to value investment securities without relying exclusively on quoted prices for specific investment securities but rather relying on the investment securities’ relationship to other benchmark quoted investment securities. Any investment security not valued based upon the methods above are considered Level 3. Derivative Financial Agreements See information regarding the Corporation’s derivative financial agreements in NOTE 5. DERIVATIVE FINANCIAL INSTRUMENTS of these Notes to Consolidated Condensed Financial Statements. The following table presents the fair value measurements of assets and liabilities recognized in the accompanying balance sheets measured at fair value on a recurring basis and the level within the fair value hierarchy in which the fair value measurements fall at September 30, 2024, and December 31, 2023. Fair Value Measurements Using: September 30, 2024 Fair Value Quoted Prices in Active Markets for Identical Assets Significant Other Significant Available for sale securities: U.S. Government-sponsored agency securities $ 85,033 $ — $ 85,033 $ — State and municipal 984,111 — 981,665 2,446 U.S. Government-sponsored mortgage-backed securities 472,046 — 472,042 4 Corporate obligations 12,306 — 12,275 31 Derivative assets 62,270 — 62,270 — Derivative liabilities 61,386 — 61,386 — Fair Value Measurements Using: December 31, 2023 Fair Value Quoted Prices in Significant Other Observable Inputs Significant Available for sale securities: U.S. Government-sponsored agency securities $ 95,307 $ — $ 95,307 $ — State and municipal 1,065,171 — 1,061,896 3,275 U.S. Government-sponsored mortgage-backed securities 454,815 — 454,811 4 Corporate obligations 11,819 — 11,788 31 Derivative assets 79,379 — 79,379 — Derivative liabilities 79,008 — 79,008 — Level 3 Reconciliation The following is a reconciliation of the beginning and ending balances of recurring fair value measurements recognized in the accompanying balance sheets using significant unobservable Level 3 inputs for the three and nine months ended September 30, 2024 and 2023. Available for Sale Securities Three Months Ended Nine Months Ended September 30, 2024 September 30, 2023 September 30, 2024 September 30, 2023 Balance at beginning of the period $ 3,224 $ 3,348 $ 3,310 $ 3,439 Included in other comprehensive income 65 (30) 76 (28) Principal payments (808) (90) (905) (183) Ending balance $ 2,481 $ 3,228 $ 2,481 $ 3,228 There were no gains or losses included in earnings that were attributable to the changes in unrealized gains or losses related to assets or liabilities held at September 30, 2024 or December 31, 2023. Transfers Between Levels There were no transfers in or out of Level 3 during the three and nine months ended September 30, 2024 and 2023. Nonrecurring Measurements Following is a description of valuation methodologies used for instruments measured at fair value on a nonrecurring basis and recognized in the accompanying balance sheets, as well as the general classification of such instruments pursuant to the valuation hierarchy at September 30, 2024, and December 31, 2023. Fair Value Measurements Using September 30, 2024 Fair Value Quoted Prices in Significant Other Significant Unobservable Collateral dependent loans $ 55,211 $ — $ — $ 55,211 Fair Value Measurements Using December 31, 2023 Fair Value Quoted Prices in Significant Other Significant Unobservable Collateral dependent loans $ 55,020 $ — $ — $ 55,020 Collateral Dependent Loans Determining fair value for collateral dependent loans requires obtaining a current independent appraisal of the collateral and applying a discount factor, which includes selling costs if applicable, to the value. The fair value of real estate is generally based on appraisals by qualified licensed appraisers. The appraisers typically determine the value of the real estate by utilizing an income or market valuation approach. If an appraisal is not available, the fair value may be determined by using a cash flow analysis. Fair value on other collateral such as business assets is typically ascertained by assessing, either singularly or some combination of, asset appraisals, accounts receivable aging reports, inventory listings and or customer financial statements. Both appraised values and values based on borrower’s financial information are discounted as considered appropriate based on age and quality of the information and current market conditions. Unobservable (Level 3) Inputs The following tables present quantitative information about unobservable inputs used in recurring and nonrecurring Level 3 fair value measurements, other than goodwill, at September 30, 2024 and December 31, 2023. September 30, 2024 Fair Value Valuation Technique Unobservable Inputs Range (Weighted-Average) State and municipal securities $ 2,446 Discounted cash flow Maturity/Call date 1 month to 6 years US Muni BQ curve BBB Discount rate 3.1% - 4.3% Weighted-average coupon 3.6% Corporate obligations and U.S. Government-sponsored mortgage-backed securities $ 35 Discounted cash flow Risk free rate 3 month CME Term SOFR plus 26bps plus premium for illiquidity (basis points) plus 200bps Weighted-average coupon 0% Collateral dependent loans $ 55,211 Collateral based measurements Discount to reflect current market conditions and ultimate collectability 0% - 15% Weighted-average discount by loan balance 12.1% December 31, 2023 Fair Value Valuation Technique Unobservable Inputs Range (Weighted-Average) State and municipal securities $ 3,275 Discounted cash flow Maturity/Call date 1 month to 15 years US Muni BQ curve BBB Discount rate 3.6% - 4.7% Weighted-average coupon 3.3% Corporate obligations and U.S. Government-sponsored mortgage-backed securities $ 35 Discounted cash flow Risk free rate 3 month CME Term SOFR plus 26bps plus premium for illiquidity (basis points) plus 200bps Weighted-average coupon 0% Collateral dependent loans $ 55,020 Collateral based measurements Discount to reflect current market conditions and ultimate collectability 0% - 10% Weighted-average discount by loan balance 4.1% The following is a discussion of the sensitivity of significant unobservable inputs, the interrelationships between those inputs and other unobservable inputs used in recurring fair value measurement and how those inputs might magnify or mitigate the effect of changes in the unobservable inputs on the fair value measurement. State and Municipal Securities, Corporate Obligations and U.S. Government-sponsored Mortgage-Backed Securities The significant unobservable inputs used in the fair value measurement of the Corporation's state and municipal securities, corporate obligations and U.S. Government-sponsored mortgage-backed securities are premiums for unrated securities and marketability discounts. Significant increases or decreases in either of those inputs in isolation would result in a significantly lower or higher fair value measurement. Generally, changes in either of those inputs will not affect the other input. Fair Value of Financial Instruments The following tables present estimated fair values of the Corporation’s financial instruments and the level within the fair value hierarchy in which the fair value measurements fall at September 30, 2024 and December 31, 2023. September 30, 2024 Quoted Prices in Active Markets Significant Significant Unobservable Carrying Amount (Level 1) (Level 2) (Level 3) Total Fair Value Assets: Cash and due from banks $ 84,719 $ 84,719 $ — $ — $ 84,719 Interest-bearing deposits 359,126 359,126 — — 359,126 Investment securities available for sale 1,553,496 — 1,551,015 2,481 1,553,496 Investment securities held to maturity, net 2,108,649 — 1,815,856 7,150 1,823,006 Loans held for sale 40,652 — 40,652 — 40,652 Net loans 12,458,980 — — 12,251,924 12,251,924 Federal Home Loan Bank stock 41,716 — 41,716 — 41,716 Derivative assets 62,270 — 62,270 — 62,270 Interest receivable 92,055 — 92,055 — 92,055 Liabilities: Deposits $ 14,365,100 $ 11,980,746 $ 2,380,600 $ — 14,361,346 Borrowings: Federal funds purchased 30,000 — 30,000 — 30,000 Securities sold under repurchase agreements 124,894 — 124,894 — 124,894 Federal Home Loan Bank advances 832,629 — 841,458 — 841,458 Subordinated debentures and other borrowings 93,562 — 83,242 — 83,242 Deposits and other liabilities held for sale 288,476 — 266,898 — 266,898 Derivative liabilities 61,386 — 61,386 — 61,386 Interest payable 18,089 — 18,089 — 18,089 December 31, 2023 Quoted Prices in Active Markets Significant Significant Unobservable Carrying Amount (Level 1) (Level 2) (Level 3) Total Fair Value Assets: Cash and due from banks $ 112,649 $ 112,649 $ — $ — $ 112,649 Interest-bearing deposits 436,080 436,080 — — 436,080 Investment securities available for sale 1,627,112 — 1,623,802 3,310 1,627,112 Investment securities held to maturity, net 2,184,252 — 1,859,974 10,400 1,870,374 Loans held for sale 18,934 — 18,934 — 18,934 Net loans 12,281,093 — — 11,958,301 11,958,301 Federal Home Loan Bank stock 41,769 — 41,769 — 41,769 Derivative assets 79,379 — 79,379 — 79,379 Interest receivable 97,664 — 97,664 — 97,664 Liabilities: Deposits $ 14,821,453 $ 12,482,295 $ 2,329,662 $ — 14,811,957 Borrowings: Securities sold under repurchase agreements 157,280 — 157,265 — 157,265 Federal Home Loan Bank advances 712,852 — 707,377 — 707,377 Subordinated debentures and other borrowings 158,644 — 149,995 — 149,995 Derivative liabilities 79,008 — 79,008 — 79,008 Interest payable 18,912 — 18,912 — 18,912

QUALIFIED AFFORDABLE HOUSING IN

QUALIFIED AFFORDABLE HOUSING INVESTMENTS	9 Months Ended
	Sep. 30, 2024
Equity Method Investments and Joint Ventures [Abstract]
QUALIFIED AFFORDABLE HOUSING INVESTMENTS	QUALIFIED AFFORDABLE HOUSING INVESTMENTS The Corporation has investments in various limited partnerships that sponsor affordable housing projects. The purpose of these investments is to earn an adequate return of capital through the receipt of low income housing tax credits and to assist the Corporation in achieving goals associated with the Community Reinvestment Act ("CRA"). These investments are included in other assets on the Consolidated Condensed Balance Sheets, with any unfunded commitments included in other liabilities. The investments are amortized as a component of income tax expense. The following table summarizes the Corporation’s affordable housing investments as of September 30, 2024 and December 31, 2023: September 30, 2024 December 31, 2023 Investment Type Investment Unfunded Commitment Investment Unfunded Commitment LIHTC $ 149,830 $ 114,756 $ 114,514 $ 96,408 The following table summarizes the amortization expense and tax credits recognized for the Corporation’s affordable housing investments for the three and nine months ended September 30, 2024 and 2023, respectively: Three Months Ended September 30, Nine Months Ended September 30, 2024 2023 2024 2023 Amortization expense $ 1,695 $ 2,242 $ 5,018 $ 4,080 Tax credits recognized 1,644 1,855 4,933 3,472

BORROWINGS

BORROWINGS	9 Months Ended
	Sep. 30, 2024
Debt Disclosure [Abstract]
BORROWINGS	BORROWINGS The following table summarizes the Corporation’s borrowings as of September 30, 2024 and December 31, 2023: September 30, 2024 December 31, 2023 Federal funds purchased $ 30,000 $ — Securities sold under repurchase agreements 124,894 157,280 Federal Home Loan Bank advances 832,629 712,852 Subordinated debentures and other borrowings 93,562 158,644 Total Borrowings $ 1,081,085 $ 1,028,776 Securities sold under repurchase agreements consist of obligations of the Bank to other parties and are secured by U.S. Government-sponsored enterprise obligations. The maximum amount of outstanding agreements at any month-end during the nine months ended September 30, 2024 and 2023 totaled $194.2 million and $241.9 million, respectively, and the average balance of such agreements totaled $138.1 million and $181.2 million during the same period of 2024 and 2023, respectively. The collateral pledged for all repurchase agreements that are accounted for as secured borrowings as of September 30, 2024 and December 31, 2023 were: September 30, 2024 Remaining Contractual Maturity of the Agreements Overnight and Continuous Up to 30 Days 30-90 Days Greater Than 90 Days Total U.S. Government-sponsored mortgage-backed securities $ 124,894 $ — $ — $ — $ 124,894 December 31, 2023 Remaining Contractual Maturity of the Agreements Overnight and Continuous Up to 30 Days 30-90 Days Greater Than 90 Days Total U.S. Government-sponsored mortgage-backed securities $ 157,280 $ — $ — $ — $ 157,280 Contractual maturities of borrowings as of September 30, 2024, are as follows: Maturities in Years Ending December 31: Federal Funds Purchased Securities Sold Federal Home Subordinated 2024 $ 30,000 $ 124,894 $ 10,000 $ 1,164 2025 — — 95,000 — 2026 — — 75,000 — 2027 — — 250,000 — 2028 — — 190,000 5,000 2029 and after — — 212,629 90,846 ASC 805 fair value adjustments at acquisition — — — (3,448) $ 30,000 $ 124,894 $ 832,629 $ 93,562 At September 30, 2024, the outstanding FHLB advances had interest rates from 0.35 to 4.94 percent and are subject to restrictions or penalties in the event of prepayment. The total available remaining borrowing capacity from the FHLB at September 30, 2024, was $762.6 million. As of September 30, 2024, the Corporation had $305.0 million of putable advances with the FHLB. Subordinated Debentures and Term Loans. As of September 30, 2024 and December 31, 2023, subordinated debentures and term loans totaled $93.6 million and $158.6 million, respectively. • First Merchants Capital Trust II (“FMC Trust II”). At September 30, 2024 and December 31, 2023, the Corporation had $41.7 million of subordinated debentures issued to FMC Trust II, a wholly-owned statutory business trust. FMC Trust II was formed in July 2007 for purposes of issuing trust preferred securities to investors. At that time, it simultaneously issued and sold its common securities to the Corporation, which constituted all of the issued and outstanding common securities of FMC Trust II. The subordinated debentures, which were purchased with the proceeds of the sale of the trust’s capital securities, are the sole assets of FMC Trust II and are fully and unconditionally guaranteed by the Corporation. As of September 30, 2024 and December 31, 2023, the subordinated debentures and trust preferred securities bear interest at a variable rate equal to the three-month CME Term Secured Overnight Financing Rate ("SOFR"), plus the 0.26161 percent spread adjustment. The interest rate at September 30, 2024 and December 31, 2023 was 6.77 percent and 7.21 percent, respectively. The trust preferred securities are currently redeemable at par and without penalty, subject to the Corporation having first redeemed the related subordinated debentures, with the prior approval of the Federal Reserve if then required under applicable capital guidelines or policies. The trust preferred securities and the subordinated debentures of FMC Trust II will mature on September 15, 2037. The Corporation continues to hold all outstanding common securities of FMC Trust II. • Ameriana Capital Trust I. At September 30, 2024 and December 31, 2023, the Corporation had $10.3 million of subordinated debentures issued to Ameriana Capital Trust I. On December 31, 2015, the Corporation acquired Ameriana Capital Trust I in conjunction with its acquisition of Ameriana Bancorp, Inc. With a trust preferred structure substantially similar to that described above for FMC Trust II, the subordinated debentures held by Ameriana Capital Trust I were purchased with the proceeds of the sale of the trust’s capital securities. As of September 30, 2024 and December 31, 2023, the subordinated debentures and trust preferred securities bear interest at a variable rate equal to the three-month CME Term SOFR, plus the 0.26161 percent spread adjustment. The interest rate at September 30, 2024 and December 31, 2023 was 6.71 percent and 7.15 percent, respectively. The trust preferred securities of Ameriana Capital Trust I are currently redeemable at par and without penalty, subject to the Corporation having first redeemed the related subordinated debentures, with the prior approval of the Federal Reserve if then required under applicable capital guidelines or policies. The trust preferred securities and the subordinated debentures of Ameriana Capital Trust I will mature in March 2036. The Corporation continues to hold all of the outstanding common securities of Ameriana Capital Trust I. • First Merchants Senior Notes and Subordinated Notes. On November 1, 2013, the Corporation completed the private issuance and sale to four institutional investors of an aggregate of $70 million of debt comprised of (a) 5.00 percent Fixed-to-Floating Rate Senior Notes due 2028 in the aggregate principal amount of $5 million (the “Senior Debt”) and (b) 6.75 percent Fixed-to-Floating Rate Subordinated Notes due 2028 in the aggregate principal amount of $65 million (the “Subordinated Debt”). The interest rate on the Senior Debt and Subordinated Debt remained fixed for the first ten (10) years and became floating thereafter. The rates converted to floating on October 30, 2023. The Corporation had an option to redeem the Subordinated Debt in whole or in part at a redemption price equal to 100 percent of the principal amount of the redeemed Subordinated Notes, plus accrued and unpaid interest to the date of the redemption. The option of redemption was subject to the approval of the Federal Reserve Board. The Corporation has an option to redeem the Senior Debt in whole or in part at a redemption price equal to 100 percent of the principal amount of the redeemed Senior Notes, plus accrued and unpaid interest to the date of the redemption; provided, however, that no Subordinated Notes (as defined in the Issuing and Paying Agency Agreement) may remain outstanding subsequent to any early redemption of Senior Notes. The Subordinated Debt and the Senior Debt options to redeem began with the interest payment date on October 30, 2023, or on any scheduled interest payment date thereafter. During the first quarter of 2024, the Corporation exercised its rights to redeem $40.0 million in principal and paid the debt in full on the scheduled interest payment date. Additionally, in the second quarter of 2024, the Corporation exercised its rights to redeem the remaining $25.0 million in principal and paid the debt on the scheduled interest payment date. Both redemptions were permitted under the optional redemptions provisions of the Subordinated Note Certificate representing the Subordinated Debt. The Senior Debt agreement contains certain customary representations and warranties and financial and negative covenants. As of September 30, 2024 and December 31, 2023 the Corporation was in compliance with these covenants. • Level One Subordinated Notes. On April 1, 2022, the Corporation assumed certain subordinated notes in conjunction with its acquisition of Level One. The $30.0 million of subordinated notes issued on December 18, 2019 bear a fixed interest rate of 4.75 percent per annum, payable semiannually through December 18, 2024. The notes will bear a floating interest rate equal to the of three-month CME Term SOFR plus 3.11 percent, payable quarterly, after December 18, 2024 through maturity. The notes mature on December 18, 2029, and the Corporation has the option to redeem any or all of the subordinated notes without premium or penalty any time after December 18, 2024 or upon the occurrence of a tier 2 capital event or tax event. • Other Borrowings. During the third quarter of 2023, the Corporation acquired a secured borrowing in conjunction with the purchase of the Indianapolis regional headquarters building. The secured borrowing bears a fixed interest rate of 3.41 percent, has a maturity date of March 2035, and had a balance of $7.2 million and $7.3 million as of September 30, 2024 and December 31, 2023, respectively. On April 1, 2022, the Corporation acquired a secured borrowing in conjunction with its acquisition of Level One. The secured borrowing related to a certain loan participation sold by Level One that did not qualify for sales treatment. The secured borrowing bears a fixed rate of 1.00 percent and had a balance of $1.2 million as of September 30, 2024 and December 31, 2023. Line of Credit. As of September 30, 2024, there was no outstanding balance on the line of credit. • U.S. Bank, N.A. On September 30, 2024, the Corporation entered into a Credit Agreement with U.S. Bank, N.A. Under the terms of the Credit Agreement, the Lender has provided the Corporation with a revolving line of credit of up to $75.0 million. The outstanding principal balance under the Credit Facility bears interest at a variable rate equal to the one-month Term SOFR rate plus 2.25 percent. Interest on the outstanding balance is payable quarterly, and the Credit Facility has a maturity date of September 30, 2025. Additionally, the Corporation is subject to a non-refundable facility fee equal to 0.40 percent per annum on the average daily unused amount of the Credit Facility, payable quarterly. The Credit Agreement contains customary representations, warranties and covenants. As of September 30, 2024, the Corporation's outstanding principal balance under the Credit Facility was zero and the Corporation was in compliance with all covenants.

ACCUMULATED OTHER COMPREHENSIVE

ACCUMULATED OTHER COMPREHENSIVE LOSS	9 Months Ended
	Sep. 30, 2024
Equity [Abstract]
ACCUMULATED OTHER COMPREHENSIVE LOSS	ACCUMULATED OTHER COMPREHENSIVE LOSS The following table summarizes the changes in the balances of each component of accumulated other comprehensive loss, net of tax, as of September 30, 2024 and 2023: Accumulated Other Comprehensive Loss Unrealized Gains (Losses) on Securities Available for Sale Unrealized Gains (Losses) on Cash Flow Hedges Unrealized Gains (Losses) on Defined Benefit Plans Total Balance at December 31, 2023 $ (173,654) $ — $ (2,316) $ (175,970) Other comprehensive income before reclassifications 16,905 — — 16,905 Amounts reclassified from accumulated other comprehensive loss 7,240 — — 7,240 Period change 24,145 — — 24,145 Balance at September 30, 2024 $ (149,509) $ — $ (2,316) $ (151,825) Balance at December 31, 2022 $ (234,495) $ 130 $ (4,786) $ (239,151) Other comprehensive loss before reclassifications (71,633) (142) — (71,775) Amounts reclassified from accumulated other comprehensive loss 3,644 12 — 3,656 Period change (67,989) (130) — (68,119) Balance at September 30, 2023 $ (302,484) $ — $ (4,786) $ (307,270) The following tables present the reclassification adjustments out of accumulated other comprehensive loss that were included in net income in the Consolidated Condensed Statements of Income for the three and nine months ended September 30, 2024 and 2023. Amount Reclassified from Accumulated Other Comprehensive Loss For the Three Months Ended September 30, Details about Accumulated Other Comprehensive Loss Components 2024 2023 Affected Line Item in the Statements of Income Unrealized gains (losses) on available for sale securities (1) Realized securities gains (losses) reclassified into income $ (9,114) $ (1,650) Other income - net realized gains (losses) on sales of available for sale securities Related income tax benefit (expense) 1,914 346 Income tax expense $ (7,200) $ (1,304) Unrealized gains (losses) on cash flow hedges (2) Interest rate contracts $ — $ — Interest expense - subordinated debentures and term loans Related income tax benefit (expense) — — Income tax expense $ — $ — Total reclassifications for the period, net of tax $ (7,200) $ (1,304) Amount Reclassified from Accumulated Other Comprehensive Loss For the Nine Months Ended September 30, Details about Accumulated Other Comprehensive Loss Components 2024 2023 Affected Line Item in the Statements of Income Unrealized gains (losses) on available for sale securities (1) Realized securities gains reclassified into income $ (9,165) $ (4,613) Other income - net realized gains on sales of available for sale securities Related income tax benefit (expense) 1,925 969 Income tax expense $ (7,240) $ (3,644) Unrealized gains (losses) on cash flow hedges (2) Interest rate contracts $ — $ (15) Interest expense - subordinated debentures and term loans Related income tax benefit (expense) — 3 Income tax expense $ — $ (12) Total reclassifications for the period, net of tax $ (7,240) $ (3,656) (1) For additional detail related to unrealized gains (losses) on available for sale securities and related amounts reclassified from accumulated other comprehensive loss see NOTE 3. INVESTMENT SECURITIES of these Notes to Consolidated Condensed Financial Statements. (2) For additional detail related to unrealized gains (losses) on cash flow hedges and related amounts reclassified from accumulated other comprehensive loss see NOTE 5. DERIVATIVE FINANCIAL INSTRUMENTS of these Notes to Consolidated Condensed Financial Statements.

SHARE-BASED COMPENSATION

SHARE-BASED COMPENSATION	9 Months Ended
	Sep. 30, 2024
Share-Based Payment Arrangement [Abstract]
SHARE-BASED COMPENSATION	SHARE-BASED COMPENSATION Stock options and Restricted Stock Awards ("RSA") have been issued to directors, officers and other management employees under the Corporation's 2019 Long-term Equity Incentive Plan, the 2024 Long-term Equity Incentive Plan, the Level One Bancorp, Inc. 2007 Stock Option Plan and the Equity Compensation Plan for Non-Employee Directors. The stock options, which have a ten year life, become 100 percent vested based on time ranging from one year to two years and are fully exercisable when vested. Option exercise prices equal the Corporation's common stock closing price on NASDAQ on the date of grant. The RSAs issued to employees and non-employee directors provide for the issuance of shares of the Corporation's common stock at no cost to the holder and generally vest after three years. The RSAs vest only if the employee is actively employed by the Corporation on the vesting date and, therefore, any unvested shares are forfeited. For non-employee directors, the RSAs vest only if the non-employee director remains as an active board member on the vesting date and, therefore, any unvested shares are forfeited. The RSAs for employees and non-employee directors are either immediately vested at retirement, disability or death, or, continue to vest after retirement, disability or death, depending on the plan under which the shares were granted. The Corporation’s 2024 Employee Stock Purchase Plan ("ESPP") provides eligible employees of the Corporation and its subsidiaries an opportunity to purchase shares of common stock of the Corporation through quarterly offerings financed by payroll deductions. The price of the stock to be paid by the employees shall be equal to 85 percent of the average of the closing price of the Corporation’s common stock on each trading day during the offering period. However, in no event shall such purchase price be less than the lesser of an amount equal to 85 percent of the market price of the Corporation’s stock on the offering date or an amount equal to 85 percent of the market value on the date of purchase. Common stock purchases are made quarterly and are paid through advance payroll deductions up to a calendar year maximum of $25,000. The 2019 Employee Stock Purchase Plan expired on June 30, 2024. Compensation expense related to unvested share-based awards is recorded by recognizing the unamortized grant date fair value of these awards over the remaining service periods of those awards, with no change in historical reported fair values and earnings. Awards are valued at fair value in accordance with provisions of share-based compensation guidance and are recognized on a straight-line basis over the service periods of each award. To complete the exercise of vested stock options, RSA’s and ESPP options, the Corporation generally issues new shares from its authorized but unissued share pool. Share-based compensation has been recognized as a component of salaries and benefits expense in the accompanying Consolidated Condensed Statements of Income. Share-based compensation expense recognized in the Consolidated Condensed Statements of Income is based on awards ultimately expected to vest and is reduced for estimated forfeitures. Share-based compensation guidance requires forfeitures to be estimated at the time of grant and revised, if necessary, in subsequent periods, if actual forfeitures differ from those estimates. Pre-vesting forfeitures were estimated to be approximately 0.05 percent for the nine months ended September 30, 2024, based on historical experience. The following table summarizes the components of the Corporation's share-based compensation awards recorded as an expense and the income tax benefit of such awards. Three Months Ended September 30, Nine Months Ended September 30, 2024 2023 2024 2023 Stock and ESPP Options Pre-tax compensation expense $ 28 $ 35 $ 130 $ 80 Income tax expense (benefit) — — (40) (62) Stock and ESPP option expense, net of income taxes $ 28 $ 35 $ 90 $ 18 Restricted Stock Awards Pre-tax compensation expense $ 1,409 $ 1,325 $ 4,061 $ 3,712 Income tax expense (benefit) (204) (393) (727) (906) Restricted stock awards expense, net of income taxes $ 1,205 $ 932 $ 3,334 $ 2,806 Total Share-Based Compensation Pre-tax compensation expense $ 1,437 $ 1,360 $ 4,191 $ 3,792 Income tax expense (benefit) (204) (393) (767) (968) Total share-based compensation expense, net of income taxes $ 1,233 $ 967 $ 3,424 $ 2,824 The grant date fair value of ESPP options was estimated to be approximately $28,000 at the beginning of the July 1, 2024 quarterly offering period. The ESPP options vested during the three months ending September 30, 2024, leaving no unrecognized compensation expense related to unvested ESPP options at September 30, 2024. Stock option activity under the Corporation's stock option plans as of September 30, 2024 and changes during the nine months ended September 30, 2024, were as follows: Number of Weighted-Average Exercise Price Weighted Average Remaining Aggregate Outstanding at January 1, 2024 90,075 $ 20.21 Exercised (49,084) $ 18.34 Outstanding September 30, 2024 40,991 $ 22.44 1.94 $ 605 Vested and Expected to Vest at September 30, 2024 40,991 $ 22.44 1.94 $ 605 Exercisable at September 30, 2024 40,991 $ 22.44 1.94 $ 605 The aggregate intrinsic value in the table above represents the total pre-tax intrinsic value (the difference between the Corporation's closing stock price on the last trading day of the first nine months of 2024 and the exercise price, multiplied by the number of in-the-money options) that would have been received by the option holders had all option holders exercised their stock options on September 30, 2024. The amount of aggregate intrinsic value will change based on the fair value of the Corporation's common stock. The aggregate intrinsic value of stock options exercised during the nine months ended September 30, 2024 and September 30, 2023 was $707,000 and $1.4 million, respectively. Cash receipts of stock options exercised during the same periods were $900,000 and $1.1 million, respectively. The following table summarizes information on unvested RSAs outstanding as of September 30, 2024: Number of Shares Weighted-Average Unvested RSAs at January 1, 2024 452,426 $ 37.94 Granted 192,663 $ 35.93 Vested (83,356) $ 42.84 Forfeited (6,225) $ 39.63 Unvested RSAs at September 30, 2024 555,508 $ 36.49 As of September 30, 2024, unrecognized compensation expense related to RSAs was $11.9 million and is expected to be recognized over a weighted-average period of 1.9 years. The Corporation did not have any unrecognized compensation expense related to stock options as of September 30, 2024.

INCOME TAX

INCOME TAX	9 Months Ended
	Sep. 30, 2024
Income Tax Disclosure [Abstract]
INCOME TAX	INCOME TAX The following table summarizes the major components creating differences between income taxes at the federal statutory and the effective tax rate recorded in the consolidated condensed statements of income for the three and nine months ended September 30, 2024 and 2023: Three Months Ended September 30, Nine Months Ended September 30, 2024 2023 2024 2023 Reconciliation of Federal Statutory to Actual Tax Expense: Federal statutory income tax at 21% $ 11,833 $ 13,728 $ 32,572 $ 44,589 Tax-exempt interest income (4,409) (4,469) (13,157) (13,792) Non-deductible FDIC premiums 180 126 462 299 Share-based compensation 98 (108) 113 (172) Tax-exempt earnings and gains on life insurance (579) (369) (1,318) (1,080) Tax credits (305) (84) (969) (249) State Income Tax 333 254 142 1,474 Other 9 (73) 207 (48) Actual Tax Expense $ 7,160 $ 9,005 $ 18,052 $ 31,021 Effective Tax Rate 12.7 % 13.8 % 11.6 % 14.6 %

NET INCOME PER COMMON SHARE

NET INCOME PER COMMON SHARE	9 Months Ended
	Sep. 30, 2024
Earnings Per Share [Abstract]
NET INCOME PER COMMON SHARE	NET INCOME PER COMMON SHARE Basic net income per common share is computed by dividing net income available to common stockholders by the weighted-average common shares outstanding during the reporting period. Diluted net income per common share is computed by dividing net income available to common stockholders by the combination of the weighted-average common shares outstanding during the reporting period and all potentially dilutive common shares. Potentially dilutive common shares include stock options and RSAs issued under the Corporation's share-based compensation plans. Potentially dilutive common shares are excluded from the computation of diluted earnings per common share in the periods where the effect would be antidilutive. The following tables reconcile basic and diluted net income per common share for the three and nine months ended September 30, 2024 and 2023. Three Months Ended September 30, 2024 2023 Net Income Available to Common Stockholders Weighted-Average Common Shares Per Share Net Income Available to Common Stockholders Weighted-Average Common Shares Per Share Net income available to common stockholders $ 48,719 58,074,361 $ 0.84 $ 55,898 59,335,877 $ 0.95 Effect of potentially dilutive stock options and restricted stock awards 215,128 166,648 Diluted net income per common share $ 48,719 58,289,489 $ 0.84 $ 55,898 59,502,525 $ 0.94 RSAs excluded from the diluted average common share calculation (1) 94,650 155,653 Nine Months Ended September 30, 2024 2023 Net Income Available to Common Stockholders Weighted-Average Common Shares Per Share Net Income Available to Common Stockholders Weighted-Average Common Shares Per Share Net income available to common stockholders $ 135,647 58,413,814 $ 2.32 $ 179,901 59,272,401 $ 3.04 Effect of potentially dilutive stock options and restricted stock awards 215,185 192,997 Diluted net income per common share $ 135,647 58,628,999 $ 2.31 $ 179,901 59,465,398 $ 3.03 RSAs excluded from the diluted average common share calculation (1) 122,134 64,646 (1)

GENERAL LITIGATION AND REGULATO

GENERAL LITIGATION AND REGULATORY EXAMINATIONS	9 Months Ended
	Sep. 30, 2024
Commitments and Contingencies Disclosure [Abstract]
GENERAL LITIGATION AND REGULATORY EXAMINATIONS	GENERAL LITIGATION AND REGULATORY EXAMINATIONS The Corporation is subject to claims and lawsuits that arise primarily in the ordinary course of business. Additionally, the Corporation is also subject to periodic examinations by various regulatory agencies. It is the general opinion of management that the disposition or ultimate resolution of any such routine litigation or regulatory examinations will not have a material adverse effect on the consolidated financial position, results of operations and cash flow of the Corporation.

Pay vs Performance Disclosure

Pay vs Performance Disclosure - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Pay vs Performance Disclosure
Total reclassifications for the period, net of tax	$ 49,187	$ 56,366	$ 137,053	$ 181,307

Insider Trading Arrangements

Insider Trading Arrangements	3 Months Ended
	Sep. 30, 2024
Trading Arrangements, by Individual
Rule 10b5-1 Arrangement Adopted	false
Non-Rule 10b5-1 Arrangement Adopted	false
Rule 10b5-1 Arrangement Terminated	false
Non-Rule 10b5-1 Arrangement Terminated	false

GENERAL (Policies)

GENERAL (Policies)	9 Months Ended
	Sep. 30, 2024
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Financial Statement Preparation	Financial Statement Preparation
Recent Accounting Changes Adopted and New Accounting Pronouncements Not Yet Adopted	Recent Accounting Changes Adopted in 2024 FASB Accounting Standards Updates - No. 2023-02 - Investments - Equity Method and Joint Ventures (Topic 323) - Accounting for Investments in Tax Credit Structures Using the Proportional Amortization Method Summary - The FASB issued ASU No. 2023-02, Investments—Equity Method and Joint Ventures (Topic 323): Accounting for Investments in Tax Credit Structures Using the Proportional Amortization Method , which is intended to improve the accounting and disclosures for investments in tax credit structures. The ASU is a consensus of the FASB’s Emerging Issues Task Force (“EITF”). The ASU allows reporting entities to elect to account for qualifying tax equity investments using the proportional amortization method, regardless of the program giving rise to the related income tax credits. The ASU responds to stakeholder feedback that the proportional amortization method provides investors and other allocators of capital with a better understanding of the returns from investments that are made primarily for the purpose of receiving income tax credits and other income tax benefits. Reporting entities were previously permitted to apply the proportional amortization method only to qualifying tax equity investments in low-income housing tax credit (LIHTC) structures. In recent years, stakeholders asked the FASB to extend the application of the proportional amortization method to qualifying tax equity investments that generate tax credits through other programs, which resulted in the EITF addressing this issue. For public business entities, the amendments became effective for fiscal years beginning after December 15, 2023, including interim periods within those fiscal years. For all other entities, the amendments will become effective for fiscal years beginning after December 15, 2024, including interim periods within those fiscal years. Early adoption is permitted for all entities in any interim period. The Corporation adopted this guidance in the first quarter of 2024 and adoption did not have a significant impact on the Corporation’s financial statements or disclosures. New Accounting Pronouncements Not Yet Adopted The Corporation continually monitors potential accounting pronouncements and the following pronouncements have been deemed to have the most applicability to the Corporation's financial statements: FASB Accounting Standards Updates - No. 2023-07 - Segment Reporting (Topic 280) — Improvements to Reportable Segment Disclosure Summary - The FASB issued ASU No. 2023-07, Segment Reporting (Topic 280) - Improvements to Reportable Segment Disclosure , which is intended to improve disclosures about a public entity’s reportable segments and addresses requests from investors and other allocators of capital for additional, more detailed information about a reportable segment’s expenses. The key amendments: • Require that a public entity disclose, on an annual and interim basis, significant segment expenses that are regularly provided to the chief operating decision maker (“CODM”) and included within each reported measure of segment profit or loss. • Require that a public entity disclose, on an annual and interim basis, an amount for other segment items by reportable segment and a description of its composition. The other segment items category is the difference between segment revenue less the significant expenses disclosed and each reported measure of segment profit or loss. • Require that a public entity provide all annual disclosures about a reportable segment’s profit or loss and assets currently required by FASB ASC Topic 280, Segment Reporting, in interim periods. • Clarify that if the CODM uses more than one measure of a segment’s profit or loss in assessing segment performance and deciding how to allocate resources, a public entity may report one or more of those additional measures of segment profit or loss. However, at least one of the reported segment profit or loss measures (or the single reported measure, if only one is disclosed) should be the measure that is most consistent with the measurement principles used in measuring the corresponding amounts in the public entity’s consolidated financial statements. • Require that a public entity disclose the title and position of the CODM and an explanation of how the CODM uses the reported measure(s) of segment profit or loss in assessing segment performance and deciding how to allocate resources. • Require that a public entity that has a single reportable segment provide all the disclosures required by the amendments in the ASU and all existing segment disclosures in Topic 280. ASU No. 2023-07, Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures , applies to all public entities that are required to report segment information in accordance with Topic 280. All public entities will be required to report segment information in accordance with the new guidance starting in annual periods beginning after December 15, 2023 and interim periods within fiscal years beginning after December 15, 2024. This ASU is not expected to have a material impact on the Corporation’s financial statements and disclosures as the Corporation has one operating segment. FASB Accounting Standards Update - No. 2023-09 - Income Taxes (Topic 740): Improvements to Income Tax Disclosures Summary - The FASB issued ASU No. 2023-09, Income Taxes (Topic 740): Improvements to Income Tax Disclosures in the fourth quarter of 2023. This ASU is intended to enhance income tax disclosures to address investor requests for more information about the tax risks and opportunities present in an entity’s worldwide operations. The two primary enhancements disaggregate existing income tax disclosures related to the effective tax rate reconciliation and income taxes paid. These amendments require that public business entities on an annual basis disclose specific categories in the rate reconciliation and provide additional information for reconciling items that meet a quantitative threshold. The amendments also require that all entities disclose on an annual basis the amount of income taxes paid (net of refunds received) disaggregated by federal, state and foreign taxes and the amount of income taxes paid (net of refunds received) disaggregated by individual jurisdictions in which income taxes paid (net of refunds received) is equal to or greater than five percent of total income taxes paid (net of refunds received). For public business entities, the amendments are effective for annual periods beginning after December 15, 2024. Early adoption is permitted for annual financial statements that have not yet been issued or made available for issue. The amendments should be applied on a prospective basis. The Corporation is assessing the terms of this guidance, but adoption of the standard is not expected to have a significant impact on the Corporation’s financial statements or disclosures.

INVESTMENT SECURITIES (Tables)

INVESTMENT SECURITIES (Tables)	9 Months Ended
	Sep. 30, 2024
Investments, Debt and Equity Securities [Abstract]
Summary of Amortized Cost, Gross Unrealized Gains and Losses and Approximate Fair Value of Investment Securities	The following tables summarize the amortized cost, gross unrealized gains and losses and approximate fair value of investment securities available for sale as of September 30, 2024 and December 31, 2023. Amortized Gross Unrealized Gross Unrealized Fair Available for sale at September 30, 2024 U.S. Government-sponsored agency securities $ 97,670 $ — $ 12,637 $ 85,033 State and municipal 1,090,953 95 106,937 984,111 U.S. Government-sponsored mortgage-backed securities 541,099 2,447 71,500 472,046 Corporate obligations 12,957 — 651 12,306 Total available for sale $ 1,742,679 $ 2,542 $ 191,725 $ 1,553,496 Amortized Gross Unrealized Gross Unrealized Fair Available for sale at December 31, 2023 U.S. Government-sponsored agency securities $ 111,521 $ — $ 16,214 $ 95,307 State and municipal 1,181,029 364 116,222 1,065,171 U.S. Government-sponsored mortgage-backed securities 541,343 462 86,990 454,815 Corporate obligations 12,947 — 1,128 11,819 Total available for sale $ 1,846,840 $ 826 $ 220,554 $ 1,627,112 The following tables summarize the amortized cost, gross unrealized gains and losses, approximate fair value and allowance for credit losses on investment securities held to maturity as of September 30, 2024 and December 31, 2023. Amortized Allowance for Credit Losses Net Carrying Amount Gross Unrealized Gross Unrealized Fair Held to maturity at September 30, 2024 U.S. Government-sponsored agency securities $ 361,335 $ — $ 361,335 $ — $ 53,432 $ 307,903 State and municipal 1,087,980 245 1,087,735 1,157 151,227 937,910 U.S. Government-sponsored mortgage-backed securities 658,079 — 658,079 — 82,382 575,697 Foreign investment 1,500 — 1,500 — 4 1,496 Total held to maturity $ 2,108,894 $ 245 $ 2,108,649 $ 1,157 $ 287,045 $ 1,823,006 Amortized Allowance for Credit Losses Net Carrying Amount Gross Unrealized Gross Unrealized Fair Held to maturity at December 31, 2023 U.S. Government-sponsored agency securities $ 374,002 $ — $ 374,002 $ — $ 64,159 $ 309,843 State and municipal 1,099,201 245 1,098,956 1,625 152,113 948,713 U.S. Government-sponsored mortgage-backed securities 709,794 — 709,794 — 99,448 610,346 Foreign investment 1,500 — 1,500 — 28 1,472 Total held to maturity $ 2,184,497 $ 245 $ 2,184,252 $ 1,625 $ 315,748 $ 1,870,374
Summary of Amortized Cost of Investment Securities Held to Maturity Aggregated by Credit Quality Indicator	On a quarterly basis, the Corporation monitors the credit quality of investment securities held to maturity through the use of credit ratings. The following table summarizes the amortized cost of investment securities held to maturity at September 30, 2024, aggregated by credit quality indicator. Held to Maturity U.S. Government-sponsored agency securities (1) State and municipal U.S. Government-sponsored mortgage-backed securities (1) Foreign investment Total Credit Rating: Aaa $ 361,335 $ 113,233 $ 658,079 $ — $ 1,132,647 Aa1 — 160,281 — — 160,281 Aa2 — 177,858 — — 177,858 Aa3 — 112,393 — — 112,393 A1 — 141,608 — — 141,608 A2 — 20,313 — — 20,313 Non-rated — 362,294 — 1,500 363,794 Total $ 361,335 $ 1,087,980 $ 658,079 $ 1,500 $ 2,108,894 (1) U.S. Government agency securities and U.S. Government mortgage-backed securities are included within the Aaa credit rating category due to their explicit or implicit government guarantees, which provide a high level of assurance regarding the timely collection of principal and interest payments.
Summary of Investment Securities in a Continuous Unrealized Loss Position	The following tables summarize, as of September 30, 2024 and December 31, 2023, investment securities available for sale in an unrealized loss position for which an allowance for credit losses has not been recorded, aggregated by security type and length of time in a continuous unrealized loss position. Less than 12 Months 12 Months or Longer Total Fair Gross Fair Gross Fair Gross Investment securities available for sale at September 30, 2024 U.S. Government-sponsored agency securities $ — $ — $ 85,033 $ 12,637 $ 85,033 $ 12,637 State and municipal 40,136 1,335 934,947 105,602 975,083 106,937 U.S. Government-sponsored mortgage-backed securities 18,916 77 346,666 71,423 365,582 71,500 Corporate obligations — — 12,275 651 12,275 651 Total investment securities available for sale $ 59,052 $ 1,412 $ 1,378,921 $ 190,313 $ 1,437,973 $ 191,725 Less than 12 Months 12 Months or Longer Total Fair Gross Fair Gross Fair Gross Investment securities available for sale at December 31, 2023 U.S. Government-sponsored agency securities $ — $ — $ 95,307 $ 16,214 $ 95,307 $ 16,214 State and municipal 55,514 1,076 963,584 115,146 1,019,098 116,222 U.S. Government-sponsored mortgage-backed securities 11,493 25 422,868 86,965 434,361 86,990 Corporate obligations — — 11,788 1,128 11,788 1,128 Total investment securities available for sale $ 67,007 $ 1,101 $ 1,493,547 $ 219,453 $ 1,560,554 $ 220,554 The following tables summarize investment securities available for sale in an unrealized loss position for which an allowance for credit losses has not been recorded, aggregated by security type and the number of securities in the portfolio as of the dates indicated. Gross Number of Securities Investment securities available for sale at September 30, 2024 U.S. Government-sponsored agency securities $ 12,637 13 State and municipal 106,937 662 U.S. Government-sponsored mortgage-backed securities 71,500 108 Corporate obligations 651 10 Total investment securities available for sale $ 191,725 793 Gross Number of Securities Investment securities available for sale at December 31, 2023 U.S. Government-sponsored agency securities $ 16,214 14 State and municipal 116,222 691 U.S. Government-sponsored mortgage-backed securities 86,990 150 Corporate obligations 1,128 10 Total investment securities available for sale $ 220,554 865
Summary of Investments in Debt and Equity Securities Reported in the Financial Statements at an Amount Less Than Their Historical Cost	Certain investment securities available for sale are reported in the financial statements at an amount less than their historical cost as indicated in the table below. September 30, 2024 December 31, 2023 Historical cost $ 1,629,698 $ 1,781,108 Fair value 1,437,973 1,560,554 Gross unrealized losses $ 191,725 $ 220,554 Percentage of the Corporation's investment securities available for sale in an unrealized loss position 92.6 % 95.9 %
Summary of Amortized Cost and Fair Value of Available for Sale Securities and Held to Maturity Securities by Contractual Maturity	The amortized cost and fair value of investment securities available for sale and held to maturity at September 30, 2024 and December 31, 2023, by contractual maturity are shown below. Expected maturities will differ from contractual maturities because issuers may have the right to call or prepay obligations with or without call or prepayment penalties. Securities not due at a single maturity are shown separately. Available for Sale Held to Maturity Amortized Cost Fair Value Amortized Cost Fair Value Maturity Distribution at September 30, 2024 Due in one year or less $ 1,809 $ 1,800 $ 15,139 $ 15,096 Due after one through five years 12,818 12,578 121,204 116,480 Due after five through ten years 162,996 151,369 165,418 151,803 Due after ten years 1,023,957 915,703 1,149,054 963,930 1,201,580 1,081,450 1,450,815 1,247,309 U.S. Government-sponsored mortgage-backed securities 541,099 472,046 658,079 575,697 Total investment securities $ 1,742,679 $ 1,553,496 $ 2,108,894 $ 1,823,006 Available for Sale Held to Maturity Amortized Cost Fair Value Amortized Cost Fair Value Maturity Distribution at December 31, 2023 Due in one year or less $ 1,390 $ 1,382 $ 3,041 $ 3,043 Due after one through five years 24,899 23,372 118,592 111,723 Due after five through ten years 127,948 120,385 135,805 126,461 Due after ten years 1,151,260 1,027,158 1,217,265 1,018,801 1,305,497 1,172,297 1,474,703 1,260,028 U.S. Government-sponsored mortgage-backed securities 541,343 454,815 709,794 610,346 Total investment securities $ 1,846,840 $ 1,627,112 $ 2,184,497 $ 1,870,374
Summary of Gross Gains and Losses on Sales and Redemptions of Available for Sale Securities	Gross gains and losses on the sales of investment securities available for sale for the three and nine months ended September 30, 2024 and 2023 are shown below. Three Months Ended September 30, Nine Months Ended September 30, 2024 2023 2024 2023 Sales and redemptions of investment securities available for sale: Gross gains $ 7 $ — $ 7 $ 759 Gross losses (9,121) (1,650) (9,172) (5,372) Net gains (losses) on sales and redemptions of investment securities available for sale $ (9,114) $ (1,650) $ (9,165) $ (4,613)

LOANS AND ALLOWANCE FOR CREDI_2

LOANS AND ALLOWANCE FOR CREDIT LOSSES (Tables)	9 Months Ended
	Sep. 30, 2024
Receivables [Abstract]
Summary of Composition of Loan Portfolio by Loan Class	The following table illustrates the composition of the Corporation’s loan portfolio by loan class as of the dates indicated. September 30, 2024 December 31, 2023 Commercial and industrial loans $ 4,041,217 $ 3,670,948 Agricultural land, production and other loans to farmers 238,743 263,414 Real estate loans: Construction 814,704 957,545 Commercial real estate, non-owner occupied 2,251,351 2,400,839 Commercial real estate, owner occupied 1,152,751 1,162,083 Residential 2,366,943 2,288,921 Home equity 641,188 617,571 Individuals' loans for household and other personal expenditures 158,480 168,388 Public finance and other commercial loans 981,431 956,318 Loans $ 12,646,808 $ 12,486,027
Summary of Credit Quality of Loan Portfolio by Loan Class	The following tables summarize the risk grading of the Corporation’s loan portfolio and gross charge-offs by loan class and by year of origination for the periods indicated. Consumer loans are not risk graded. For the purposes of this disclosure, consumer loans are classified in the following manner: loans that are less than 30 days past due are Pass, loans 30-89 days past due are Special Mention and loans greater than 89 days past due are Substandard. The entire balance of a loan is considered delinquent if the minimum payment contractually required to be made is not received by the specified due date. September 30, 2024 Term Loans (amortized cost basis by origination year) Revolving loans amortized cost basis Revolving loans converted to term 2024 2023 2022 2021 2020 Prior Total Commercial and industrial loans Pass $ 1,110,731 $ 625,113 $ 259,418 $ 180,272 $ 62,723 $ 53,350 $ 1,495,641 $ 136 $ 3,787,384 Special Mention 14,480 9,872 8,979 2,730 2,731 369 45,459 — 84,620 Substandard 28,078 32,296 24,365 7,007 1,655 1,670 72,482 555 168,108 Doubtful — 1,105 — — — — — — 1,105 Total Commercial and industrial loans 1,153,289 668,386 292,762 190,009 67,109 55,389 1,613,582 691 4,041,217 Current period gross charge-offs 1,178 37,655 242 8,577 498 236 — — 48,386 Agricultural land, production and other loans to farmers Pass 23,646 24,039 33,909 27,872 28,250 32,445 63,526 — 233,687 Special Mention 171 — 245 — — 444 548 — 1,408 Substandard 491 50 936 696 516 86 873 — 3,648 Total Agricultural land, production and other loans to farmers 24,308 24,089 35,090 28,568 28,766 32,975 64,947 — 238,743 Real estate loans: Construction Pass 186,900 227,462 174,201 73,746 6,518 8,851 12,828 — 690,506 Special Mention 35,150 26,805 18,197 13,341 — 6 — — 93,499 Substandard 22,000 — 8,699 — — — — — 30,699 Total Construction 244,050 254,267 201,097 87,087 6,518 8,857 12,828 — 814,704 Commercial real estate, non-owner occupied Pass 278,958 280,167 346,311 413,970 351,260 299,771 21,681 — 1,992,118 Special Mention 81,543 19,499 19,347 23,624 1,768 28,452 — — 174,233 Substandard 31,922 5,778 8,982 6,270 19,606 1,614 — — 74,172 Doubtful 10,828 — — — — — — — 10,828 Total Commercial real estate, non-owner occupied 403,251 305,444 374,640 443,864 372,634 329,837 21,681 — 2,251,351 Current period gross charge-offs — 339 3 — — — — — 342 Commercial real estate, owner occupied Pass 118,117 167,922 173,512 230,821 214,975 144,123 33,613 — 1,083,083 Special Mention 2,220 2,385 8,616 6,545 4,935 1,402 460 — 26,563 Substandard 6,804 12,216 5,204 8,896 2,747 7,083 155 — 43,105 Total Commercial real estate, owner occupied 127,141 182,523 187,332 246,262 222,657 152,608 34,228 — 1,152,751 Current period gross charge-offs — — — — 9 — — — 9 Residential Pass 166,807 421,280 680,588 408,017 339,835 308,575 6,117 13 2,331,232 Special Mention 1,095 1,975 5,436 3,425 1,745 3,585 — — 17,261 Substandard 528 1,478 6,836 4,226 1,066 3,991 325 — 18,450 Total Residential 168,430 424,733 692,860 415,668 342,646 316,151 6,442 13 2,366,943 Current period gross charge-offs — 124 653 123 21 288 — — 1,209 Home equity Pass 6,239 6,674 25,743 54,185 11,864 4,346 516,564 6,766 632,381 Special Mention — — — 421 — 33 3,772 593 4,819 Substandard 62 — 572 561 — 206 1,955 632 3,988 Total Home Equity 6,301 6,674 26,315 55,167 11,864 4,585 522,291 7,991 641,188 Current period gross charge-offs — 10 35 23 — 264 — — 332 Individuals' loans for household and other personal expenditures Pass 37,606 24,496 34,052 11,078 3,097 5,215 39,613 369 155,526 Special Mention 42 461 568 1,507 80 8 286 — 2,952 Substandard — — — — — 2 — — 2 Total Individuals' loans for household and other personal expenditures 37,648 24,957 34,620 12,585 3,177 5,225 39,899 369 158,480 Current period gross charge-offs 130 609 397 149 44 50 — — 1,379 Public finance and other commercial loans Pass 72,229 53,788 204,870 197,319 151,368 301,284 573 — 981,431 Total Public finance and other commercial loans 72,229 53,788 204,870 197,319 151,368 301,284 573 — 981,431 Loans $ 2,236,647 $ 1,944,861 $ 2,049,586 $ 1,676,529 $ 1,206,739 $ 1,206,911 $ 2,316,471 $ 9,064 $ 12,646,808 Total current period gross charge-offs $ 1,308 $ 38,737 $ 1,330 $ 8,872 $ 572 $ 838 $ — $ — $ 51,657 December 31, 2023 Term Loans (amortized cost basis by origination year) Revolving loans amortized Revolving loans converted 2023 2022 2021 2020 2019 Prior cost basis to term Total Commercial and industrial loans Pass $ 1,175,967 $ 474,601 $ 253,148 $ 86,226 $ 47,910 $ 45,020 $ 1,393,756 $ 60 $ 3,476,688 Special Mention 34,356 3,911 1,546 5,149 2,986 241 45,994 — 94,183 Substandard 12,311 20,245 17,733 2,479 1,507 1,512 40,449 144 96,380 Doubtful 857 — — — — — 2,840 — 3,697 Total Commercial and industrial loans 1,223,491 498,757 272,427 93,854 52,403 46,773 1,483,039 204 3,670,948 Current period gross charge-offs 13,973 2,711 576 5,665 78 261 — — 23,264 Agricultural land, production and other loans to farmers Pass 35,633 38,145 31,511 31,048 12,995 25,462 87,534 — 262,328 Special Mention — 266 — — — 122 — — 388 Substandard 58 150 — 454 — 36 — — 698 Total Agricultural land, production and other loans to farmers 35,691 38,561 31,511 31,502 12,995 25,620 87,534 — 263,414 Current period gross charge-offs — — — — — — — — — Real estate loans: Construction Pass 403,578 267,587 198,350 8,372 7,723 2,357 11,735 — 899,702 Special Mention 25,894 — — 20,846 — — — — 46,740 Substandard 1,451 4,330 5,322 — — — — — 11,103 Total Construction 430,923 271,917 203,672 29,218 7,723 2,357 11,735 — 957,545 Current period gross charge-offs — — — — — — — — — Commercial real estate, non-owner occupied Pass 373,378 504,280 535,327 418,553 141,320 200,821 16,744 — 2,190,423 Special Mention 76,382 21,145 7,005 4,531 19,479 27,941 37 — 156,520 Substandard 20,358 10,537 219 20,236 — 2,299 247 — 53,896 Total Commercial real estate, non-owner occupied 470,118 535,962 542,551 443,320 160,799 231,061 17,028 — 2,400,839 Current period gross charge-offs — 66 — — — — — — 66 Commercial real estate, owner occupied Pass 176,750 199,821 256,346 263,522 99,180 77,485 27,369 — 1,100,473 Special Mention 6,712 5,034 9,319 2,460 919 2,902 514 — 27,860 Substandard 18,092 3,712 4,183 4,545 289 2,929 — — 33,750 Total Commercial real estate, owner occupied 201,554 208,567 269,848 270,527 100,388 83,316 27,883 — 1,162,083 Current period gross charge-offs 48 — — — 2 — — — 50 Residential Pass 395,363 695,056 442,495 365,297 98,654 254,718 4,988 83 2,256,654 Special Mention 2,167 5,591 3,202 1,924 1,065 4,837 200 81 19,067 Substandard 804 3,708 2,529 1,199 866 4,063 31 — 13,200 Total Residential 398,334 704,355 448,226 368,420 100,585 263,618 5,219 164 2,288,921 Current period gross charge-offs 101 252 208 3 3 94 — — 661 Home equity Pass 9,375 29,784 61,591 11,084 1,092 3,875 484,330 5,837 606,968 Special Mention — 715 — 1,092 15 2 5,031 149 7,004 Substandard 63 — 727 — — 123 2,589 97 3,599 Total Home Equity 9,438 30,499 62,318 12,176 1,107 4,000 491,950 6,083 617,571 Current period gross charge-offs 69 213 224 149 193 1,596 — — 2,444 Individuals' loans for household and other personal expenditures Pass 35,781 49,295 28,387 6,726 2,070 5,904 38,619 772 167,554 Special Mention 184 246 138 69 — 14 176 — 827 Substandard — 6 — — 1 — — — 7 Total Individuals' loans for household and other personal expenditures 35,965 49,547 28,525 6,795 2,071 5,918 38,795 772 168,388 Current period gross charge-offs 147 770 342 77 62 156 — — 1,554 Public finance and other commercial loans Pass 65,357 208,347 204,863 155,132 91,619 229,355 1,645 — 956,318 Total Public finance and other commercial loans 65,357 208,347 204,863 155,132 91,619 229,355 1,645 — 956,318 Loans $ 2,870,871 $ 2,546,512 $ 2,063,941 $ 1,410,944 $ 529,690 $ 892,018 $ 2,164,828 $ 7,223 $ 12,486,027 Total current period gross charge-offs $ 14,338 $ 4,012 $ 1,350 $ 5,894 $ 338 $ 2,107 $ — $ — $ 28,039 The tables below present the amortized cost basis of collateral dependent loans by loan class and their respective collateral type, which are individually evaluated to determine expected credit losses. The total collateral dependent loan balance increased $6.0 million, primarily related to an increase of $21.4 million in commercial real estate, non-owner occupied, partially offset by a decrease of $16.3 million in commercial and industrial, for the nine months ended September 30, 2024. The total related allowance balance decreased $4.4 million, primarily related to a decrease of $9.2 million in commercial and industrial, offset by an increase of $4.8 million in commercial real estate, non-owner occupied, for the nine months ended September 30, 2024. September 30, 2024 Commercial Real Estate Residential Real Estate Other Total Allowance on Collateral Dependent Loans Commercial and industrial loans $ — $ — $ 15,685 $ 15,685 $ 2,312 Real estate loans: Construction — 4 — 4 — Commercial real estate, non-owner occupied 38,959 — — 38,959 4,864 Commercial real estate, owner occupied 10,575 — — 10,575 — Residential — 1,241 — 1,241 198 Home equity — 206 — 206 26 Loans $ 49,534 $ 1,451 $ 15,685 $ 66,670 $ 7,400 December 31, 2023 Commercial Real Estate Residential Real Estate Other Total Allowance on Collateral Dependent Loans Commercial and industrial loans $ — $ — $ 32,029 $ 32,029 $ 11,474 Real estate loans: Construction — 7 — 7 — Commercial real estate, non-owner occupied 17,516 — — 17,516 35 Commercial real estate, owner occupied 9,452 — — 9,452 — Residential — 1,439 — 1,439 230 Home equity — 223 — 223 30 Loans $ 26,968 $ 1,669 $ 32,029 $ 60,666 $ 11,769
Summary of Past Due Aging of Loan Portfolio by Loan Class	The tables below show a past due aging of the Corporation’s loan portfolio, by loan class, as of the dates indicated: September 30, 2024 Current 30-59 Days 60-89 Days 90 Days or More Past Due Total Loans > 90 Days or More Past Due Commercial and industrial loans $ 4,023,016 $ 1,906 $ 7,805 $ 8,490 $ 4,041,217 $ 930 Agricultural land, production and other loans to farmers 238,221 522 — — 238,743 — Real estate loans: Construction 810,536 2,522 1,646 — 814,704 — Commercial real estate, non-owner occupied 2,225,782 8,680 485 16,404 2,251,351 12,989 Commercial real estate, owner occupied 1,150,327 501 891 1,032 1,152,751 — Residential 2,334,312 10,377 6,029 16,225 2,366,943 166 Home equity 632,653 3,212 1,532 3,791 641,188 20 Individuals' loans for household and other personal expenditures 155,526 2,567 385 2 158,480 — Public finance and other commercial loans 981,431 — — — 981,431 — Loans $ 12,551,804 $ 30,287 $ 18,773 $ 45,944 $ 12,646,808 $ 14,105 December 31, 2023 Current 30-59 Days 60-89 Days 90 Days or More Past Due Total Loans > 90 Days or More Past Due Commercial and industrial loans $ 3,657,447 $ 5,021 $ 1,622 $ 6,858 $ 3,670,948 $ 86 Agricultural land, production and other loans to farmers 263,414 — — — 263,414 — Real estate loans: Construction 955,588 — 1,957 — 957,545 — Commercial real estate, non-owner occupied 2,376,184 12,995 195 11,465 2,400,839 — Commercial real estate, owner occupied 1,161,869 — 104 110 1,162,083 — Residential 2,259,496 11,810 5,472 12,143 2,288,921 — Home equity 608,948 3,614 1,647 3,362 617,571 52 Individuals' loans for household and other personal expenditures 167,553 635 192 8 168,388 — Public finance and other commercial loans 956,284 — — 34 956,318 34 Loans $ 12,406,783 $ 34,075 $ 11,189 $ 33,980 $ 12,486,027 $ 172
Summary of Non-Accrual Loans by Loan class	The following table summarizes the Corporation’s nonaccrual loans by loan class as of the dates indicated. September 30, 2024 December 31, 2023 Nonaccrual Loans Nonaccrual Loans with no Allowance for Credit Losses Nonaccrual Loans Nonaccrual Loans with no Allowance for Credit Losses Commercial and industrial loans $ 8,612 $ 2,459 $ 9,050 $ 1,015 Agricultural land, production and other loans to farmers 81 — 58 — Real estate loans: Construction — — 520 — Commercial real estate, non-owner occupied 23,283 10,175 11,932 11,095 Commercial real estate, owner occupied 3,237 2,577 3,041 2,257 Residential 18,905 — 25,140 — Home equity 4,925 — 3,820 — Individuals' loans for household and other personal expenditures 45 — 19 — Loans $ 59,088 $ 15,211 $ 53,580 $ 14,367
Summary of Modified Loans	The following tables present the amortized cost basis of loans at September 30, 2024 and 2023 that were both experiencing financial difficulty and modified during the three and nine months ended September 30, 2024 and 2023, by class and by type of modification. The percentage of the amortized cost basis of loans that were modified to borrowers in financial distress as compared to the amortized cost basis of each class of financing receivable is also presented below. Three Months Ended September 30, 2024 Loan Modifications Made to Borrowers Experiencing Financial Difficulty Payment Delay Term Extension Combination Payment Delay & Term Extension Combination Interest Rate Reduction & Term Extension Combination Interest Rate Reduction, Term Extension, & Payment Delay % of Total Class of Financing Receivable Commercial and industrial loans $ 9,600 $ 10,333 $ — $ 31 $ — 0.49 % Real estate loans: Construction — 915 22,000 — — 2.81 % Commercial real estate, non-owner occupied — 10,254 — 10,828 — 0.94 % Commercial real estate, owner occupied — 5,841 — — — 0.51 % Residential 493 56 — — 304 0.04 % Home equity — 62 — — — 0.01 % Total $ 10,093 $ 27,461 $ 22,000 $ 10,859 $ 304 Three Months Ended September 30, 2023 Loan Modifications Made to Borrowers Experiencing Financial Difficulty Payment Delay Term Extension Combination Interest Rate Reduction & Term Extension Combination Payment Delay & Term Extension % of Total Class of Financing Receivable Commercial and industrial loans $ 908 $ 7,734 $ 134 $ — 0.25 % Real estate loans: Commercial real estate, non-owner occupied — 11,823 — — 0.50 % Commercial real estate, owner occupied — 6,950 — — 0.60 % Home equity — 63 — — 0.01 % Individuals' loans for household and other personal expenditures — — — 1 — % Total $ 908 $ 26,570 $ 134 $ 1 Nine Months Ended September 30, 2024 Loan Modifications Made to Borrowers Experiencing Financial Difficulty Payment Delay Term Extension Interest Rate Reduction Combination Payment Delay & Term Extension Combination Interest Rate Reduction & Term Extension Combination Interest Rate Reduction, Term Extension, & Payment Delay % of Total Class of Financing Receivable Commercial and industrial loans $ 11,080 $ 12,880 $ 247 $ 17 $ 31 $ — 0.60 % Real estate loans: Construction — 915 — 22,000 — — 2.81 % Commercial real estate, non-owner occupied — 18,933 — — 10,828 — 1.32 % Commercial real estate, owner occupied — 6,208 — — — — 0.54 % Residential 1,931 341 — 283 — 529 0.13 % Home Equity — 62 — 162 — — 0.03 % Total $ 13,011 $ 39,339 $ 247 $ 22,462 $ 10,859 $ 529 Nine Months Ended September 30, 2023 Loan Modifications Made to Borrowers Experiencing Financial Difficulty Payment Delay Term Extension Combination Interest Rate Reduction & Term Extension Combination Payment Delay & Term Extension % of Total Class of Financing Receivable Commercial and industrial loans $ 908 $ 14,822 $ 239 $ — 0.46 % Agricultural land, production and other loans to farmers — 34 — — 0.01 % Real estate loans: Construction — 13 — — — % Commercial real estate, non-owner occupied — 11,823 5,942 — 0.75 % Commercial real estate, owner occupied 5,602 8,642 75 — 1.24 % Residential — — — 472 0.02 % Home equity — 63 — — 0.01 % Individuals' loans for household and other personal expenditures — — — 1 — % Total $ 6,510 $ 35,397 $ 6,256 $ 473 The following tables present the financial effect of the loan modifications presented above to borrowers experiencing financial difficulty for the three and nine months ended September 30, 2024 and 2023. Three Months Ended September 30, 2024 Financial Effect of Loan Modifications Payment Delay Term Extension Combination Payment Delay & Term Extension Combination Interest Rate Reduction & Term Extension Combination Interest Rate Reduction, Term Extension & Payment Delay Commercial and industrial loans Provided payment deferrals with weighted average delayed amounts of $200,000. Extended loans by a weighted average of 6 months. Reduced the weighted average contractual interest rate from 9.50% to 8.05% and extended loans by a weighted average of 48 months. Real estate loans: Construction Extended loans by a weighted average of 6 months. Provided payment deferrals with weighted average delayed amounts of $475,000 and extended loans by a weighted average of 4 months. Commercial real estate, non-owner occupied Extended loans by a weighted average of 8 months. Reduced the weighted average contractual interest rate from 12.38% to 7.88% and extended loans by a weighted average of 8 months. Commercial real estate, owner occupied Extended loans by a weighted average of 8 months. Residential Provided payment deferrals with weighted average delayed amounts of $8,000. Extended loans by a weighted average of 92 months. Provided payment deferrals with weighted average delayed amounts of $14,000, extended loans by a weighted average of 149 months, and reduced the weighted average contractual interest rate from 5.73% to 3.31%. Home equity Extended loans by a weighted average of 6 months. Three Months Ended September 30, 2023 Financial Effect of Loan Modifications Payment Delay Term Extension Combination Interest Rate Reduction & Term Extension Combination Payment Delay & Term Extension Commercial and industrial loans Provided payment deferrals with weighted average delayed amounts of $24,000. Extended loans by a weighted average of 8 months. Reduced the weighted average contractual interest rate from 10.75% to 7.62%. Extended loans by a weighted average of 14 months. Real estate loans: Commercial real estate, non-owner occupied Extended loans by a weighted average of 11 months. Commercial real estate, owner occupied Extended loans by a weighted average of 4 months. Home Equity Extended loans by a weighted average of 5 months. Individuals' loans for household and other personal expenditures Provided payment deferrals with weighted average delayed amounts of $300. Extended loans by a weighted average of 3 months. Nine Months Ended September 30, 2024 Financial Effect of Loan Modifications Payment Delay Term Extension Interest Rate Reduction Combination Payment Delay & Term Extension Combination Interest Rate Reduction & Term Extension Combination Interest Rate Reduction, Term Extension & Payment Delay Commercial and industrial loans Provided payment deferrals with weighted average delayed amounts of $180,000. Extended loans by a weighted average of 9 months. Reduced the weighted average contractual interest rate from 9.00% to 8.00%. Provided payment deferrals with weighted average delayed amounts of $4,900 and extended loans by a weighted average of 3 months. Reduced the weighted average contractual interest rate from 9.50% to 8.05%. Extended loans by a weighted average of 48 months. Real estate loans: Construction Extended loans by a weighted average of 6 months. Provided payment deferrals with weighted average delayed amounts of $475,000 and extended loans by a weighted average of 4 months. Commercial real estate, non-owner occupied Extended loans by a weighted average of 13 months. Reduced the weighted average contractual interest rate from 12.38% to 7.88%. Extended loans by a weighted average of 8 months. Commercial real estate, owner occupied Extended loans by a weighted average of 13 months. Residential Provided payment deferrals with weighted average delayed amounts of $26,000. Extended loans by a weighted average of 20 months. Provided payment deferrals with weighted average delayed amounts of $8,000 and extended loans by a weighted average of 153 months. Provided payment deferrals with weighted average delayed amounts of $14,000, extended loans by a weighted average of 91 months, and reduced the weighted average contractual interest rate from 5.74% to 4.03%. Home Equity Extended loans by a weighted average of 6 months. Provided payment deferrals with weighted average delayed amounts of $7,800 and extended loans by a weighted average of 60 months. Nine Months Ended September 30, 2023 Financial Effect of Loan Modifications Payment Delay Term Extension Combination Interest Rate Reduction & Term Extension Combination Payment Delay & Term Extension Commercial and industrial loans Provided payment deferrals with weighted average delayed amounts of $24,000 Extended loans by a weighted average of 8 months. Reduced the weighted average contractual interest rate from 9.66% to 7.39%. Extended loans by a weighted average of 13 months. Agricultural land, production and other loans to farmers Extended loans by a weighted average of 60 months. Real estate loans: Construction Extended loans by a weighted average of 24 months. Commercial real estate, non-owner occupied Extended loans by a weighted average of 10 months. Reduced the weighted average contractual interest rate from 7.81% to 7.40%. Extended loans by a weighted average of 41 months. Commercial real estate, owner occupied Provided payment deferrals with weighted average delayed amounts of $4,500,000. Extended loans by a weighted average of 4 months. Reduced the weighted average contractual interest rate from 10.25% to 6.61%. Extended loans by a weighted average of 114 months. Residential Provided payment deferrals with weighted average delayed amounts $3,400. Extended loans by a weighted average of 3 months. Home Equity Extended loans by a weighted average of 5 months. Provided payment deferrals with weighted average delayed amounts $300. Extended loans by a weighted average of 3 months. The Corporation closely monitors the performance of financial difficulty modifications to understand the effectiveness of its efforts. The following tables present the performance of financial difficulty modifications in the twelve months following modification. September 30, 2024 Current 30-59 Days Past Due 60-89 Days Past Due 90+ Days Past Due Total Commercial and industrial loans $ 24,445 $ — $ 1,927 $ — $ 26,372 Agricultural land, production and other loans to farmers 22 — — — 22 Real estate loans: — Construction 22,915 — — — 22,915 Commercial real estate, non-owner occupied 21,082 8,680 — 1,730 31,492 Commercial real estate, owner occupied 7,523 — — — 7,523 Residential 1,940 — 250 1,189 3,379 Home equity 252 — — — 252 Total $ 78,179 $ 8,680 $ 2,177 $ 2,919 $ 91,955 September 30, 2023 Current 30-59 Days Past Due 60-89 Days Past Due Total Commercial and industrial loans $ 15,863 $ — $ 106 $ 15,969 Agricultural land, production and other loans to farmers 34 — — 34 Real estate loans: — Construction 13 — — 13 Commercial real estate, non-owner occupied 17,765 — — 17,765 Commercial real estate, owner occupied 13,157 — 1,162 14,319 Residential 472 — — 472 Home equity 63 — — 63 Individuals' loans for household and other personal expenditures — 1 — 1 Total $ 47,367 $ 1 $ 1,268 $ 48,636
Summary of Changes in Allowance for Loan Losses	The following tables summarize changes in the allowance for credit losses by loan segment for the three and nine months ended September 30, 2024 and 2023: Three Months Ended September 30, 2024 Commercial Commercial Real Estate Construction Consumer & Residential Total Allowance for credit losses - loans Balances, June 30, 2024 $ 91,217 $ 45,514 $ 14,360 $ 38,446 $ 189,537 Provision for credit losses - loans 8,456 1,873 (2,609) (2,720) 5,000 Recoveries on loans 505 18 — 371 894 Loans charged off (6,375) — — (1,228) (7,603) Balances, September 30, 2024 $ 93,803 $ 47,405 $ 11,751 $ 34,869 $ 187,828 Three Months Ended September 30, 2023 Commercial Commercial Real Estate Construction Consumer & Residential Total Allowance for credit losses - loans Balances, June 30, 2023 $ 108,373 $ 39,157 $ 30,073 $ 43,544 $ 221,147 Provision for credit losses - loans 3,020 4,901 140 (3,061) 5,000 Recoveries on loans 179 — — 367 546 Loans charged off (19,833) — — (1,078) (20,911) Balances, September 30, 2023 $ 91,739 $ 44,058 $ 30,213 $ 39,772 $ 205,782 Nine Months Ended September 30, 2024 Commercial Commercial Real Estate Construction Consumer & Residential Total Allowance for credit losses - loans Balances, December 31, 2023 $ 97,348 $ 44,048 $ 24,823 $ 38,715 $ 204,934 Provision for credit losses - loans 43,249 3,476 (13,072) (2,153) 31,500 Recoveries on loans 1,592 232 — 1,227 3,051 Loans charged off (48,386) (351) — (2,920) (51,657) Balances, September 30, 2024 $ 93,803 $ 47,405 $ 11,751 $ 34,869 $ 187,828 Nine Months Ended September 30, 2023 Commercial Commercial Real Estate Construction Consumer & Residential Total Allowance for credit losses - loans Balances, December 31, 2022 $ 102,216 $ 46,839 $ 28,955 $ 45,267 $ 223,277 Provision for credit losses - loans 9,460 (2,833) 1,258 (2,885) 5,000 Recoveries on loans 775 56 — 1,004 1,835 Loans charged off (20,712) (4) — (3,614) (24,330) Balances, September 30, 2023 $ 91,739 $ 44,058 $ 30,213 $ 39,772 $ 205,782
Summary of Financial Instruments with Off-balance Sheet Risk	Financial instruments with off-balance sheet risk were as follows: September 30, 2024 December 31, 2023 Amounts of commitments: Loan commitments to extend credit $ 5,493,144 $ 5,025,790 Standby letters of credit $ 66,043 $ 65,580
Summary of Allowance for Credit Losses, Off-balance Sheet	The table below reflects the total allowance for credit losses for the off-balance sheet commitment for the three and nine months ended September 30, 2024 and 2023: Three Months Ended Nine Months Ended September 30, 2024 September 30, 2023 September 30, 2024 September 30, 2023 Balance at beginning of the period $ 19,500 $ 23,300 $ 19,500 $ 23,300 Provision for credit losses - unfunded commitments — (3,000) — (3,000) Ending balance $ 19,500 $ 20,300 $ 19,500 $ 20,300

DERIVATIVE FINANCIAL INSTRUME_2

DERIVATIVE FINANCIAL INSTRUMENTS (Tables)	9 Months Ended
	Sep. 30, 2024
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Summary of Amount of Gain (Loss) Recognized in Other Comprehensive Income (Loss)	The amount of loss recognized in other comprehensive income (loss) is included in the table below for the periods indicated. Derivatives in Cash Flow Hedging Relationships Amount of Loss Recognized in Other Comprehensive Income (Loss) on Derivatives Three Months Ended Nine Months Ended September 30, 2024 September 30, 2023 September 30, 2024 September 30, 2023 Interest Rate Products $ — $ (66) $ — $ (179)
Summary of Effect of Derivative Financial Instruments on the Income Statement	The amount of gain (loss) reclassified from accumulated other comprehensive loss into income related to cash flow hedging relationships is included in the tables below for the periods indicated. Derivatives Designated as Location of Gain (Loss) Amount of Gain Reclassed from Accumulated Other Comprehensive Loss into Income (Effective Portion) Three Months Ended September 30, 2024 Three Months Ended September 30, 2023 Interest rate contracts Interest Expense $ — $ — Derivatives Designated as Location of Gain (Loss) Amount of Gain Reclassed from Accumulated Other Comprehensive Loss into Income (Effective Portion) Nine Months Ended September 30, 2024 Nine Months Ended September 30, 2023 Interest rate contracts Interest Expense $ — $ (15) Derivatives Not Designated as Location of Gain (Loss) Amount of Gain (Loss) Three Months Ended September 30, 2024 Three Months Ended September 30, 2023 Forward contracts related to mortgage loans to be delivered for sale Net gains and fees on sales of loans $ (966) $ 982 Interest rate lock commitments Net gains and fees on sales of loans 30 (100) Total net gain (loss) recognized in income $ (936) $ 882 Derivatives Not Designated as Location of Gain (Loss) Amount of Gain (Loss) Nine Months Ended September 30, 2024 Nine Months Ended September 30, 2023 Forward contracts related to mortgage loans to be delivered for sale Net gains and fees on sales of loans $ (573) $ 1,691 Interest rate lock commitments Net gains and fees on sales of loans (15) (133) Total net gain/(loss) recognized in income $ (588) $ 1,558
Summary of Fair Value of Derivative Financial Instruments and Classification on the Balance Sheet	The table below presents the fair value of the Corporation’s non-designated hedges, as well as their classification on the Consolidated Condensed Balance Sheets, as of September 30, 2024, and December 31, 2023. September 30, 2024 December 31, 2023 Notional Amount Fair Value Notional Amount Fair Value Included in other assets: Interest rate swaps $ 1,333,382 $ 61,207 $ 1,355,947 $ 78,743 Forward contracts related to mortgage loans to be delivered for sale 80,528 840 15,160 469 Interest rate lock commitments 38,639 223 22,706 167 Included in other assets $ 1,452,549 $ 62,270 $ 1,393,813 $ 79,379 Included in other liabilities: Interest rate swaps $ 1,332,410 $ 61,248 $ 1,355,947 $ 78,811 Forward contracts related to mortgage loans to be delivered for sale 16,500 61 25,290 191 Interest rate lock commitments 28,135 77 1,025 6 Included in other liabilities $ 1,377,045 $ 61,386 $ 1,382,262 $ 79,008

FAIR VALUES OF FINANCIAL INST_2

FAIR VALUES OF FINANCIAL INSTRUMENTS (Tables)	9 Months Ended
	Sep. 30, 2024
Fair Value Disclosures [Abstract]
Summary of Fair Value Measurements of Assets and Liabilities Recognized in the Balance Sheets Measured at Fair Value on Recurring Basis	The following table presents the fair value measurements of assets and liabilities recognized in the accompanying balance sheets measured at fair value on a recurring basis and the level within the fair value hierarchy in which the fair value measurements fall at September 30, 2024, and December 31, 2023. Fair Value Measurements Using: September 30, 2024 Fair Value Quoted Prices in Active Markets for Identical Assets Significant Other Significant Available for sale securities: U.S. Government-sponsored agency securities $ 85,033 $ — $ 85,033 $ — State and municipal 984,111 — 981,665 2,446 U.S. Government-sponsored mortgage-backed securities 472,046 — 472,042 4 Corporate obligations 12,306 — 12,275 31 Derivative assets 62,270 — 62,270 — Derivative liabilities 61,386 — 61,386 — Fair Value Measurements Using: December 31, 2023 Fair Value Quoted Prices in Significant Other Observable Inputs Significant Available for sale securities: U.S. Government-sponsored agency securities $ 95,307 $ — $ 95,307 $ — State and municipal 1,065,171 — 1,061,896 3,275 U.S. Government-sponsored mortgage-backed securities 454,815 — 454,811 4 Corporate obligations 11,819 — 11,788 31 Derivative assets 79,379 — 79,379 — Derivative liabilities 79,008 — 79,008 —
Summary of Reconciliation of Beginning and Ending Balances of Recurring Fair Value Measurements Recognized in the Balance Sheets using Significant Unobservable Level 3 Inputs	The following is a reconciliation of the beginning and ending balances of recurring fair value measurements recognized in the accompanying balance sheets using significant unobservable Level 3 inputs for the three and nine months ended September 30, 2024 and 2023. Available for Sale Securities Three Months Ended Nine Months Ended September 30, 2024 September 30, 2023 September 30, 2024 September 30, 2023 Balance at beginning of the period $ 3,224 $ 3,348 $ 3,310 $ 3,439 Included in other comprehensive income 65 (30) 76 (28) Principal payments (808) (90) (905) (183) Ending balance $ 2,481 $ 3,228 $ 2,481 $ 3,228
Summary of Description of Valuation Methodologies Used for Instruments Measured at Fair Value on a Non-Recurring Basis and Recognized in the Balance Sheets	Following is a description of valuation methodologies used for instruments measured at fair value on a nonrecurring basis and recognized in the accompanying balance sheets, as well as the general classification of such instruments pursuant to the valuation hierarchy at September 30, 2024, and December 31, 2023. Fair Value Measurements Using September 30, 2024 Fair Value Quoted Prices in Significant Other Significant Unobservable Collateral dependent loans $ 55,211 $ — $ — $ 55,211 Fair Value Measurements Using December 31, 2023 Fair Value Quoted Prices in Significant Other Significant Unobservable Collateral dependent loans $ 55,020 $ — $ — $ 55,020
Summary of Unobservable Inputs Used in Recurring and Nonrecurring Level 3 Fair Value Measurements Other than Goodwill	The following tables present quantitative information about unobservable inputs used in recurring and nonrecurring Level 3 fair value measurements, other than goodwill, at September 30, 2024 and December 31, 2023. September 30, 2024 Fair Value Valuation Technique Unobservable Inputs Range (Weighted-Average) State and municipal securities $ 2,446 Discounted cash flow Maturity/Call date 1 month to 6 years US Muni BQ curve BBB Discount rate 3.1% - 4.3% Weighted-average coupon 3.6% Corporate obligations and U.S. Government-sponsored mortgage-backed securities $ 35 Discounted cash flow Risk free rate 3 month CME Term SOFR plus 26bps plus premium for illiquidity (basis points) plus 200bps Weighted-average coupon 0% Collateral dependent loans $ 55,211 Collateral based measurements Discount to reflect current market conditions and ultimate collectability 0% - 15% Weighted-average discount by loan balance 12.1% December 31, 2023 Fair Value Valuation Technique Unobservable Inputs Range (Weighted-Average) State and municipal securities $ 3,275 Discounted cash flow Maturity/Call date 1 month to 15 years US Muni BQ curve BBB Discount rate 3.6% - 4.7% Weighted-average coupon 3.3% Corporate obligations and U.S. Government-sponsored mortgage-backed securities $ 35 Discounted cash flow Risk free rate 3 month CME Term SOFR plus 26bps plus premium for illiquidity (basis points) plus 200bps Weighted-average coupon 0% Collateral dependent loans $ 55,020 Collateral based measurements Discount to reflect current market conditions and ultimate collectability 0% - 10% Weighted-average discount by loan balance 4.1%
Summary of Estimated Fair Values of Financial Instruments	The following tables present estimated fair values of the Corporation’s financial instruments and the level within the fair value hierarchy in which the fair value measurements fall at September 30, 2024 and December 31, 2023. September 30, 2024 Quoted Prices in Active Markets Significant Significant Unobservable Carrying Amount (Level 1) (Level 2) (Level 3) Total Fair Value Assets: Cash and due from banks $ 84,719 $ 84,719 $ — $ — $ 84,719 Interest-bearing deposits 359,126 359,126 — — 359,126 Investment securities available for sale 1,553,496 — 1,551,015 2,481 1,553,496 Investment securities held to maturity, net 2,108,649 — 1,815,856 7,150 1,823,006 Loans held for sale 40,652 — 40,652 — 40,652 Net loans 12,458,980 — — 12,251,924 12,251,924 Federal Home Loan Bank stock 41,716 — 41,716 — 41,716 Derivative assets 62,270 — 62,270 — 62,270 Interest receivable 92,055 — 92,055 — 92,055 Liabilities: Deposits $ 14,365,100 $ 11,980,746 $ 2,380,600 $ — 14,361,346 Borrowings: Federal funds purchased 30,000 — 30,000 — 30,000 Securities sold under repurchase agreements 124,894 — 124,894 — 124,894 Federal Home Loan Bank advances 832,629 — 841,458 — 841,458 Subordinated debentures and other borrowings 93,562 — 83,242 — 83,242 Deposits and other liabilities held for sale 288,476 — 266,898 — 266,898 Derivative liabilities 61,386 — 61,386 — 61,386 Interest payable 18,089 — 18,089 — 18,089 December 31, 2023 Quoted Prices in Active Markets Significant Significant Unobservable Carrying Amount (Level 1) (Level 2) (Level 3) Total Fair Value Assets: Cash and due from banks $ 112,649 $ 112,649 $ — $ — $ 112,649 Interest-bearing deposits 436,080 436,080 — — 436,080 Investment securities available for sale 1,627,112 — 1,623,802 3,310 1,627,112 Investment securities held to maturity, net 2,184,252 — 1,859,974 10,400 1,870,374 Loans held for sale 18,934 — 18,934 — 18,934 Net loans 12,281,093 — — 11,958,301 11,958,301 Federal Home Loan Bank stock 41,769 — 41,769 — 41,769 Derivative assets 79,379 — 79,379 — 79,379 Interest receivable 97,664 — 97,664 — 97,664 Liabilities: Deposits $ 14,821,453 $ 12,482,295 $ 2,329,662 $ — 14,811,957 Borrowings: Securities sold under repurchase agreements 157,280 — 157,265 — 157,265 Federal Home Loan Bank advances 712,852 — 707,377 — 707,377 Subordinated debentures and other borrowings 158,644 — 149,995 — 149,995 Derivative liabilities 79,008 — 79,008 — 79,008 Interest payable 18,912 — 18,912 — 18,912

QUALIFIED AFFORDABLE HOUSING _2

QUALIFIED AFFORDABLE HOUSING INVESTMENTS (Tables)	9 Months Ended
	Sep. 30, 2024
Equity Method Investments and Joint Ventures [Abstract]
Summary of Affordable Housing Investments	The following table summarizes the Corporation’s affordable housing investments as of September 30, 2024 and December 31, 2023: September 30, 2024 December 31, 2023 Investment Type Investment Unfunded Commitment Investment Unfunded Commitment LIHTC $ 149,830 $ 114,756 $ 114,514 $ 96,408 The following table summarizes the amortization expense and tax credits recognized for the Corporation’s affordable housing investments for the three and nine months ended September 30, 2024 and 2023, respectively: Three Months Ended September 30, Nine Months Ended September 30, 2024 2023 2024 2023 Amortization expense $ 1,695 $ 2,242 $ 5,018 $ 4,080 Tax credits recognized 1,644 1,855 4,933 3,472

BORROWINGS (Tables)

BORROWINGS (Tables)	9 Months Ended
	Sep. 30, 2024
Debt Disclosure [Abstract]
Summary of Borrowings	The following table summarizes the Corporation’s borrowings as of September 30, 2024 and December 31, 2023: September 30, 2024 December 31, 2023 Federal funds purchased $ 30,000 $ — Securities sold under repurchase agreements 124,894 157,280 Federal Home Loan Bank advances 832,629 712,852 Subordinated debentures and other borrowings 93,562 158,644 Total Borrowings $ 1,081,085 $ 1,028,776
Summary of Collateral Pledged for Repurchase Agreements	The collateral pledged for all repurchase agreements that are accounted for as secured borrowings as of September 30, 2024 and December 31, 2023 were: September 30, 2024 Remaining Contractual Maturity of the Agreements Overnight and Continuous Up to 30 Days 30-90 Days Greater Than 90 Days Total U.S. Government-sponsored mortgage-backed securities $ 124,894 $ — $ — $ — $ 124,894 December 31, 2023 Remaining Contractual Maturity of the Agreements Overnight and Continuous Up to 30 Days 30-90 Days Greater Than 90 Days Total U.S. Government-sponsored mortgage-backed securities $ 157,280 $ — $ — $ — $ 157,280
Summary of Contractual Maturities of Borrowings	Contractual maturities of borrowings as of September 30, 2024, are as follows: Maturities in Years Ending December 31: Federal Funds Purchased Securities Sold Federal Home Subordinated 2024 $ 30,000 $ 124,894 $ 10,000 $ 1,164 2025 — — 95,000 — 2026 — — 75,000 — 2027 — — 250,000 — 2028 — — 190,000 5,000 2029 and after — — 212,629 90,846 ASC 805 fair value adjustments at acquisition — — — (3,448) $ 30,000 $ 124,894 $ 832,629 $ 93,562

ACCUMULATED OTHER COMPREHENSI_2

ACCUMULATED OTHER COMPREHENSIVE LOSS (Tables)	9 Months Ended
	Sep. 30, 2024
Equity [Abstract]
Summary of Accumulated Other Comprehensive Income (Loss)	The following table summarizes the changes in the balances of each component of accumulated other comprehensive loss, net of tax, as of September 30, 2024 and 2023: Accumulated Other Comprehensive Loss Unrealized Gains (Losses) on Securities Available for Sale Unrealized Gains (Losses) on Cash Flow Hedges Unrealized Gains (Losses) on Defined Benefit Plans Total Balance at December 31, 2023 $ (173,654) $ — $ (2,316) $ (175,970) Other comprehensive income before reclassifications 16,905 — — 16,905 Amounts reclassified from accumulated other comprehensive loss 7,240 — — 7,240 Period change 24,145 — — 24,145 Balance at September 30, 2024 $ (149,509) $ — $ (2,316) $ (151,825) Balance at December 31, 2022 $ (234,495) $ 130 $ (4,786) $ (239,151) Other comprehensive loss before reclassifications (71,633) (142) — (71,775) Amounts reclassified from accumulated other comprehensive loss 3,644 12 — 3,656 Period change (67,989) (130) — (68,119) Balance at September 30, 2023 $ (302,484) $ — $ (4,786) $ (307,270)
Summary of Reclassification out of Accumulated Other Comprehensive Income (Loss)	The following tables present the reclassification adjustments out of accumulated other comprehensive loss that were included in net income in the Consolidated Condensed Statements of Income for the three and nine months ended September 30, 2024 and 2023. Amount Reclassified from Accumulated Other Comprehensive Loss For the Three Months Ended September 30, Details about Accumulated Other Comprehensive Loss Components 2024 2023 Affected Line Item in the Statements of Income Unrealized gains (losses) on available for sale securities (1) Realized securities gains (losses) reclassified into income $ (9,114) $ (1,650) Other income - net realized gains (losses) on sales of available for sale securities Related income tax benefit (expense) 1,914 346 Income tax expense $ (7,200) $ (1,304) Unrealized gains (losses) on cash flow hedges (2) Interest rate contracts $ — $ — Interest expense - subordinated debentures and term loans Related income tax benefit (expense) — — Income tax expense $ — $ — Total reclassifications for the period, net of tax $ (7,200) $ (1,304) Amount Reclassified from Accumulated Other Comprehensive Loss For the Nine Months Ended September 30, Details about Accumulated Other Comprehensive Loss Components 2024 2023 Affected Line Item in the Statements of Income Unrealized gains (losses) on available for sale securities (1) Realized securities gains reclassified into income $ (9,165) $ (4,613) Other income - net realized gains on sales of available for sale securities Related income tax benefit (expense) 1,925 969 Income tax expense $ (7,240) $ (3,644) Unrealized gains (losses) on cash flow hedges (2) Interest rate contracts $ — $ (15) Interest expense - subordinated debentures and term loans Related income tax benefit (expense) — 3 Income tax expense $ — $ (12) Total reclassifications for the period, net of tax $ (7,240) $ (3,656) (1) For additional detail related to unrealized gains (losses) on available for sale securities and related amounts reclassified from accumulated other comprehensive loss see NOTE 3. INVESTMENT SECURITIES of these Notes to Consolidated Condensed Financial Statements. (2) For additional detail related to unrealized gains (losses) on cash flow hedges and related amounts reclassified from accumulated other comprehensive loss see NOTE 5. DERIVATIVE FINANCIAL INSTRUMENTS of these Notes to Consolidated Condensed Financial Statements.

SHARE-BASED COMPENSATION (Table

SHARE-BASED COMPENSATION (Tables)	9 Months Ended
	Sep. 30, 2024
Share-Based Payment Arrangement [Abstract]
Summary of Components of Share Based Compensation Awards	The following table summarizes the components of the Corporation's share-based compensation awards recorded as an expense and the income tax benefit of such awards. Three Months Ended September 30, Nine Months Ended September 30, 2024 2023 2024 2023 Stock and ESPP Options Pre-tax compensation expense $ 28 $ 35 $ 130 $ 80 Income tax expense (benefit) — — (40) (62) Stock and ESPP option expense, net of income taxes $ 28 $ 35 $ 90 $ 18 Restricted Stock Awards Pre-tax compensation expense $ 1,409 $ 1,325 $ 4,061 $ 3,712 Income tax expense (benefit) (204) (393) (727) (906) Restricted stock awards expense, net of income taxes $ 1,205 $ 932 $ 3,334 $ 2,806 Total Share-Based Compensation Pre-tax compensation expense $ 1,437 $ 1,360 $ 4,191 $ 3,792 Income tax expense (benefit) (204) (393) (767) (968) Total share-based compensation expense, net of income taxes $ 1,233 $ 967 $ 3,424 $ 2,824
Summary of Stock Option Activity Under Stock Option Plans	Stock option activity under the Corporation's stock option plans as of September 30, 2024 and changes during the nine months ended September 30, 2024, were as follows: Number of Weighted-Average Exercise Price Weighted Average Remaining Aggregate Outstanding at January 1, 2024 90,075 $ 20.21 Exercised (49,084) $ 18.34 Outstanding September 30, 2024 40,991 $ 22.44 1.94 $ 605 Vested and Expected to Vest at September 30, 2024 40,991 $ 22.44 1.94 $ 605 Exercisable at September 30, 2024 40,991 $ 22.44 1.94 $ 605
Summary of Unvested RSAs Outstanding	The following table summarizes information on unvested RSAs outstanding as of September 30, 2024: Number of Shares Weighted-Average Unvested RSAs at January 1, 2024 452,426 $ 37.94 Granted 192,663 $ 35.93 Vested (83,356) $ 42.84 Forfeited (6,225) $ 39.63 Unvested RSAs at September 30, 2024 555,508 $ 36.49

INCOME TAX (Tables)

INCOME TAX (Tables)	9 Months Ended
	Sep. 30, 2024
Income Tax Disclosure [Abstract]
Summary of Reconciliation of Federal Statutory to Actual Tax Expense	The following table summarizes the major components creating differences between income taxes at the federal statutory and the effective tax rate recorded in the consolidated condensed statements of income for the three and nine months ended September 30, 2024 and 2023: Three Months Ended September 30, Nine Months Ended September 30, 2024 2023 2024 2023 Reconciliation of Federal Statutory to Actual Tax Expense: Federal statutory income tax at 21% $ 11,833 $ 13,728 $ 32,572 $ 44,589 Tax-exempt interest income (4,409) (4,469) (13,157) (13,792) Non-deductible FDIC premiums 180 126 462 299 Share-based compensation 98 (108) 113 (172) Tax-exempt earnings and gains on life insurance (579) (369) (1,318) (1,080) Tax credits (305) (84) (969) (249) State Income Tax 333 254 142 1,474 Other 9 (73) 207 (48) Actual Tax Expense $ 7,160 $ 9,005 $ 18,052 $ 31,021 Effective Tax Rate 12.7 % 13.8 % 11.6 % 14.6 %

NET INCOME PER COMMON SHARE (Ta

NET INCOME PER COMMON SHARE (Tables)	9 Months Ended
	Sep. 30, 2024
Earnings Per Share [Abstract]
Summary of Reconciliation of Basic and Diluted Net Income Per Share	The following tables reconcile basic and diluted net income per common share for the three and nine months ended September 30, 2024 and 2023. Three Months Ended September 30, 2024 2023 Net Income Available to Common Stockholders Weighted-Average Common Shares Per Share Net Income Available to Common Stockholders Weighted-Average Common Shares Per Share Net income available to common stockholders $ 48,719 58,074,361 $ 0.84 $ 55,898 59,335,877 $ 0.95 Effect of potentially dilutive stock options and restricted stock awards 215,128 166,648 Diluted net income per common share $ 48,719 58,289,489 $ 0.84 $ 55,898 59,502,525 $ 0.94 RSAs excluded from the diluted average common share calculation (1) 94,650 155,653 Nine Months Ended September 30, 2024 2023 Net Income Available to Common Stockholders Weighted-Average Common Shares Per Share Net Income Available to Common Stockholders Weighted-Average Common Shares Per Share Net income available to common stockholders $ 135,647 58,413,814 $ 2.32 $ 179,901 59,272,401 $ 3.04 Effect of potentially dilutive stock options and restricted stock awards 215,185 192,997 Diluted net income per common share $ 135,647 58,628,999 $ 2.31 $ 179,901 59,465,398 $ 3.03 RSAs excluded from the diluted average common share calculation (1) 122,134 64,646 (1)

GENERAL - Narrative (Details)

GENERAL - Narrative (Details)	9 Months Ended
	Sep. 30, 2024 segment
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Number of operating segments	1

ACQUISITIONS AND DISPOSITIONS (

ACQUISITIONS AND DISPOSITIONS (Details) - Discontinued Operations, Held-for-Sale - Old Second Bancorp, Inc. Branch Sale $ in Millions	Sep. 30, 2024 USD ($)	Aug. 26, 2024 bankBranch
Business Acquisition [Line Items]
Number of branches | bankBranch		5
Loans	$ 9.2
Deposits and other liabilities held for sale	287.7
Fixed assets	$ 3.4

INVESTMENT SECURITIES - Amortiz

INVESTMENT SECURITIES - Amortized Cost and Approximate Fair Value of Securities (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Available for sale securities
Amortized Cost	$ 1,742,679	$ 1,846,840
Gross Unrealized Gains	2,542	826
Gross Unrealized Losses	191,725	220,554
Fair Value	1,553,496	1,627,112
Held to maturity securities
Amortized Cost	2,108,894	2,184,497
Allowance for Credit Losses	245	245
Net Carrying Amount	2,108,649	2,184,252
Gross Unrealized Gains	1,157	1,625
Gross Unrealized Losses	287,045	315,748
Fair Value	1,823,006	1,870,374
U.S. Government-sponsored agency securities
Available for sale securities
Amortized Cost	97,670	111,521
Gross Unrealized Gains	0	0
Gross Unrealized Losses	12,637	16,214
Fair Value	85,033	95,307
Held to maturity securities
Amortized Cost	361,335	374,002
Allowance for Credit Losses	0	0
Net Carrying Amount	361,335	374,002
Gross Unrealized Gains	0	0
Gross Unrealized Losses	53,432	64,159
Fair Value	307,903	309,843
State and municipal
Available for sale securities
Amortized Cost	1,090,953	1,181,029
Gross Unrealized Gains	95	364
Gross Unrealized Losses	106,937	116,222
Fair Value	984,111	1,065,171
Held to maturity securities
Amortized Cost	1,087,980	1,099,201
Allowance for Credit Losses	245	245
Net Carrying Amount	1,087,735	1,098,956
Gross Unrealized Gains	1,157	1,625
Gross Unrealized Losses	151,227	152,113
Fair Value	937,910	948,713
U.S. Government-sponsored mortgage-backed securities
Available for sale securities
Amortized Cost	541,099	541,343
Gross Unrealized Gains	2,447	462
Gross Unrealized Losses	71,500	86,990
Fair Value	472,046	454,815
Held to maturity securities
Amortized Cost	658,079	709,794
Allowance for Credit Losses	0	0
Net Carrying Amount	658,079	709,794
Gross Unrealized Gains	0	0
Gross Unrealized Losses	82,382	99,448
Fair Value	575,697	610,346
Corporate obligations
Available for sale securities
Amortized Cost	12,957	12,947
Gross Unrealized Gains	0	0
Gross Unrealized Losses	651	1,128
Fair Value	12,306	11,819
Foreign investment
Held to maturity securities
Amortized Cost	1,500	1,500
Allowance for Credit Losses	0	0
Net Carrying Amount	1,500	1,500
Gross Unrealized Gains	0	0
Gross Unrealized Losses	4	28
Fair Value	$ 1,496	$ 1,472

INVESTMENT SECURITIES - Narrati

INVESTMENT SECURITIES - Narrative (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Schedule Of Available For Sale Securities And Held To Maturity Securities [Line Items]
Accrued interest on investment securities	$ 21,700	$ 25,200
Allowance for credit losses	245	245
Carrying value of securities pledged as collateral	3,400,000	1,800,000
Securities sold under repurchase agreements	143,700	181,400
State and municipal
Schedule Of Available For Sale Securities And Held To Maturity Securities [Line Items]
Allowance for credit losses	$ 245	$ 245

INVESTMENT SECURITIES - Amort_2

INVESTMENT SECURITIES - Amortized Cost of Investment Securities Held to Maturity (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Schedule of Held-to-maturity Securities [Line Items]
Total	$ 2,108,894	$ 2,184,497
Aaa
Schedule of Held-to-maturity Securities [Line Items]
Total	1,132,647
Aa1
Schedule of Held-to-maturity Securities [Line Items]
Total	160,281
Aa2
Schedule of Held-to-maturity Securities [Line Items]
Total	177,858
Aa3
Schedule of Held-to-maturity Securities [Line Items]
Total	112,393
A1
Schedule of Held-to-maturity Securities [Line Items]
Total	141,608
A2
Schedule of Held-to-maturity Securities [Line Items]
Total	20,313
Non-rated
Schedule of Held-to-maturity Securities [Line Items]
Total	363,794
U.S. Government-sponsored agency securities
Schedule of Held-to-maturity Securities [Line Items]
Total	361,335	374,002
U.S. Government-sponsored agency securities | Aaa
Schedule of Held-to-maturity Securities [Line Items]
Total	361,335
U.S. Government-sponsored agency securities | Aa1
Schedule of Held-to-maturity Securities [Line Items]
Total	0
U.S. Government-sponsored agency securities | Aa2
Schedule of Held-to-maturity Securities [Line Items]
Total	0
U.S. Government-sponsored agency securities | Aa3
Schedule of Held-to-maturity Securities [Line Items]
Total	0
U.S. Government-sponsored agency securities | A1
Schedule of Held-to-maturity Securities [Line Items]
Total	0
U.S. Government-sponsored agency securities | A2
Schedule of Held-to-maturity Securities [Line Items]
Total	0
U.S. Government-sponsored agency securities | Non-rated
Schedule of Held-to-maturity Securities [Line Items]
Total	0
State and municipal
Schedule of Held-to-maturity Securities [Line Items]
Total	1,087,980	1,099,201
State and municipal | Aaa
Schedule of Held-to-maturity Securities [Line Items]
Total	113,233
State and municipal | Aa1
Schedule of Held-to-maturity Securities [Line Items]
Total	160,281
State and municipal | Aa2
Schedule of Held-to-maturity Securities [Line Items]
Total	177,858
State and municipal | Aa3
Schedule of Held-to-maturity Securities [Line Items]
Total	112,393
State and municipal | A1
Schedule of Held-to-maturity Securities [Line Items]
Total	141,608
State and municipal | A2
Schedule of Held-to-maturity Securities [Line Items]
Total	20,313
State and municipal | Non-rated
Schedule of Held-to-maturity Securities [Line Items]
Total	362,294
U.S. Government-sponsored mortgage-backed securities
Schedule of Held-to-maturity Securities [Line Items]
Total	658,079	$ 709,794
U.S. Government-sponsored mortgage-backed securities | Aaa
Schedule of Held-to-maturity Securities [Line Items]
Total	658,079
U.S. Government-sponsored mortgage-backed securities | Aa1
Schedule of Held-to-maturity Securities [Line Items]
Total	0
U.S. Government-sponsored mortgage-backed securities | Aa2
Schedule of Held-to-maturity Securities [Line Items]
Total	0
U.S. Government-sponsored mortgage-backed securities | Aa3
Schedule of Held-to-maturity Securities [Line Items]
Total	0
U.S. Government-sponsored mortgage-backed securities | A1
Schedule of Held-to-maturity Securities [Line Items]
Total	0
U.S. Government-sponsored mortgage-backed securities | A2
Schedule of Held-to-maturity Securities [Line Items]
Total	0
U.S. Government-sponsored mortgage-backed securities | Non-rated
Schedule of Held-to-maturity Securities [Line Items]
Total	0
Foreign investment
Schedule of Held-to-maturity Securities [Line Items]
Total	1,500
Foreign investment | Aaa
Schedule of Held-to-maturity Securities [Line Items]
Total	0
Foreign investment | Aa1
Schedule of Held-to-maturity Securities [Line Items]
Total	0
Foreign investment | Aa2
Schedule of Held-to-maturity Securities [Line Items]
Total	0
Foreign investment | Aa3
Schedule of Held-to-maturity Securities [Line Items]
Total	0
Foreign investment | A1
Schedule of Held-to-maturity Securities [Line Items]
Total	0
Foreign investment | A2
Schedule of Held-to-maturity Securities [Line Items]
Total	0
Foreign investment | Non-rated
Schedule of Held-to-maturity Securities [Line Items]
Total	$ 1,500

INVESTMENT SECURITIES - Investm

INVESTMENT SECURITIES - Investments' Gross Unrealized Losses and Fair Value Aggregated by Investment Category and Length of Time in Continuous Unrealized Loss Position (Details) $ in Thousands	Sep. 30, 2024 USD ($) security	Dec. 31, 2023 USD ($) security
Fair Value
Less than 12 Months	$ 59,052	$ 67,007
12 Months or Longer	1,378,921	1,493,547
Total	1,437,973	1,560,554
Gross Unrealized Losses
Less than 12 Months	1,412	1,101
12 Months or Longer	190,313	219,453
Total	$ 191,725	$ 220,554
Number of Securities | security	793	865
U.S. Government-sponsored agency securities
Fair Value
Less than 12 Months	$ 0	$ 0
12 Months or Longer	85,033	95,307
Total	85,033	95,307
Gross Unrealized Losses
Less than 12 Months	0	0
12 Months or Longer	12,637	16,214
Total	$ 12,637	$ 16,214
Number of Securities | security	13	14
State and municipal
Fair Value
Less than 12 Months	$ 40,136	$ 55,514
12 Months or Longer	934,947	963,584
Total	975,083	1,019,098
Gross Unrealized Losses
Less than 12 Months	1,335	1,076
12 Months or Longer	105,602	115,146
Total	$ 106,937	$ 116,222
Number of Securities | security	662	691
U.S. Government-sponsored mortgage-backed securities
Fair Value
Less than 12 Months	$ 18,916	$ 11,493
12 Months or Longer	346,666	422,868
Total	365,582	434,361
Gross Unrealized Losses
Less than 12 Months	77	25
12 Months or Longer	71,423	86,965
Total	$ 71,500	$ 86,990
Number of Securities | security	108	150
Corporate obligations
Fair Value
Less than 12 Months	$ 0	$ 0
12 Months or Longer	12,275	11,788
Total	12,275	11,788
Gross Unrealized Losses
Less than 12 Months	0	0
12 Months or Longer	651	1,128
Total	$ 651	$ 1,128
Number of Securities | security	10	10

INVESTMENT SECURITIES - Inves_2

INVESTMENT SECURITIES - Investments in Debt and Equity Securities Reported Less than Historical Cost (Details) - Investments reported at less than historical cost - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Schedule of Investments [Line Items]
Historical cost	$ 1,629,698	$ 1,781,108
Fair value	1,437,973	1,560,554
Gross unrealized losses	$ 191,725	$ 220,554
Percentage of the Corporation's investment securities available for sale in an unrealized loss position	92.60%	95.90%

INVESTMENT SECURITIES - Amort_3

INVESTMENT SECURITIES - Amortized Cost and Fair Value of Available for Sale Securities and Held to Maturity Securities by Contractual Maturity (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Amortized Cost
Due in one year or less	$ 1,809	$ 1,390
Due after one through five years	12,818	24,899
Due after five through ten years	162,996	127,948
Due after ten years	1,023,957	1,151,260
Total debt securities with a single maturity date	1,201,580	1,305,497
Total investment securities	1,742,679	1,846,840
Fair Value
Due in one year or less	1,800	1,382
Due after one through five years	12,578	23,372
Due after five through ten years	151,369	120,385
Due after ten years	915,703	1,027,158
Total debt securities with a single maturity date	1,081,450	1,172,297
Total investment securities	1,553,496	1,627,112
Amortized Cost
Due in one year or less	15,139	3,041
Due after one through five years	121,204	118,592
Due after five through ten years	165,418	135,805
Due after ten years	1,149,054	1,217,265
Total debt securities with a single maturity date	1,450,815	1,474,703
Total investment securities	2,108,894	2,184,497
Fair Value
Due in one year or less	15,096	3,043
Due after one through five years	116,480	111,723
Due after five through ten years	151,803	126,461
Due after ten years	963,930	1,018,801
Total debt securities with a single maturity date	1,247,309	1,260,028
Total investment securities	1,823,006	1,870,374
U.S. Government-sponsored mortgage-backed securities
Amortized Cost
U.S. Government-sponsored mortgage-backed securities	541,099	541,343
Fair Value
U.S. Government-sponsored mortgage-backed securities	472,046	454,815
Total investment securities	472,046	454,815
Amortized Cost
U.S. Government-sponsored mortgage-backed securities	658,079	709,794
Total investment securities	658,079	709,794
Fair Value
U.S. Government-sponsored mortgage-backed securities	575,697	610,346
Total investment securities	$ 575,697	$ 610,346

INVESTMENT SECURITIES - Gross G

INVESTMENT SECURITIES - Gross Gains and Losses on Sales and Redemptions of Available for Sale Securities (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Sales and redemptions of investment securities available for sale:
Gross gains	$ 7	$ 0	$ 7	$ 759
Gross losses	(9,121)	(1,650)	(9,172)	(5,372)
Net gains (losses) on sales and redemptions of investment securities available for sale	$ (9,114)	$ (1,650)	$ (9,165)	$ (4,613)

LOANS AND ALLOWANCE FOR CREDI_3

LOANS AND ALLOWANCE FOR CREDIT LOSSES - Narrative (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2024 USD ($)	Sep. 30, 2023 USD ($)	Sep. 30, 2024 USD ($) loan_segment	Sep. 30, 2023 USD ($)	Dec. 31, 2023 USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for sale	$ 40,652,000		$ 40,652,000		$ 18,934,000
Loans	12,646,808,000		12,646,808,000		12,486,027,000
Interest income recognized on non-accrual loans	0	$ 0	0	$ 0
Payment default	1,700,000	0	$ 2,900,000	0
Number of loan segments | loan_segment			10
Allowance for credit losses increase (decrease)	(1,700,000)		$ (17,100,000)
Net charge-offs	6,700,000		48,600,000
Provision for credit losses	$ 5,000,000	5,000,000	$ 31,500,000	5,000,000
Standby letters of credit usual term	2 years		2 years
Increase (decrease) in provision	$ 0	$ (3,000,000)	$ 0	$ (3,000,000)
Commercial real estate, non-owner occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	2,251,351,000		2,251,351,000		2,400,839,000
Commercial and industrial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	4,041,217,000		4,041,217,000		3,670,948,000
Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	814,704,000		814,704,000		957,545,000
Individuals' loans for household and other personal expenditures
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	158,480,000		158,480,000		168,388,000
Residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	2,366,943,000		2,366,943,000		2,288,921,000
Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	95,000,000		95,000,000		79,200,000
Increase (decrease) in past due loans			15,800,000
30-59 Days Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	30,287,000		30,287,000		34,075,000
Increase (decrease) in past due loans			(3,800,000)
30-59 Days Past Due | Commercial real estate, non-owner occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	8,680,000		8,680,000		12,995,000
Increase (decrease) in past due loans			(4,300,000)
30-59 Days Past Due | Commercial and industrial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	1,906,000		1,906,000		5,021,000
Increase (decrease) in past due loans			(3,100,000)
30-59 Days Past Due | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	2,522,000		2,522,000		0
Increase (decrease) in past due loans			2,500,000
30-59 Days Past Due | Individuals' loans for household and other personal expenditures
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	2,567,000		2,567,000		635,000
Increase (decrease) in past due loans			1,900,000
30-59 Days Past Due | Residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	10,377,000		10,377,000		11,810,000
60-89 Days Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	18,773,000		18,773,000		11,189,000
Increase (decrease) in past due loans			7,600,000
60-89 Days Past Due | Commercial real estate, non-owner occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	485,000		485,000		195,000
60-89 Days Past Due | Commercial and industrial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	7,805,000		7,805,000		1,622,000
60-89 Days Past Due | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	1,646,000		1,646,000		1,957,000
Increase (decrease) in past due loans			6,200,000
60-89 Days Past Due | Individuals' loans for household and other personal expenditures
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	385,000		385,000		192,000
60-89 Days Past Due | Residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	6,029,000		6,029,000		5,472,000
90 Days or More Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	45,944,000		45,944,000		33,980,000
Increase (decrease) in past due loans			12,000,000
90 Days or More Past Due | Commercial real estate, non-owner occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	16,404,000		16,404,000		11,465,000
Increase (decrease) in past due loans			4,900,000
90 Days or More Past Due | Commercial and industrial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	8,490,000		8,490,000		6,858,000
Increase (decrease) in past due loans			1,600,000
90 Days or More Past Due | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	0		0		0
90 Days or More Past Due | Individuals' loans for household and other personal expenditures
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	2,000		2,000		8,000
90 Days or More Past Due | Residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 16,225,000		16,225,000		$ 12,143,000
Increase (decrease) in past due loans			$ 4,100,000

LOANS AND ALLOWANCE FOR CREDI_4

LOANS AND ALLOWANCE FOR CREDIT LOSSES - Composition of Loan Portfolio by Loan Class (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	$ 12,646,808	$ 12,486,027
Commercial and industrial loans
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	4,041,217	3,670,948
Agricultural land, production and other loans to farmers
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	238,743	263,414
Construction
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	814,704	957,545
Commercial real estate, non-owner occupied
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	2,251,351	2,400,839
Commercial real estate, owner occupied
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	1,152,751	1,162,083
Residential
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	2,366,943	2,288,921
Home equity
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	641,188	617,571
Individuals' loans for household and other personal expenditures
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	158,480	168,388
Public finance and other commercial loans
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	$ 981,431	$ 956,318

LOANS AND ALLOWANCE FOR CREDI_5

LOANS AND ALLOWANCE FOR CREDIT LOSSES - Risk Grading of Loan Portfolio by Loan Class (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2024	Dec. 31, 2023
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current fiscal year	$ 2,236,647	$ 2,870,871
Current fiscal year, charge-offs	1,308	14,338
Fiscal year before current fiscal year	1,944,861	2,546,512
Fiscal year before current fiscal year, charge-offs	38,737	4,012
Two years before current fiscal year	2,049,586	2,063,941
Two years before current fiscal year, charge-offs	1,330	1,350
Three years before current fiscal year	1,676,529	1,410,944
Three years before current fiscal year, charge-offs	8,872	5,894
Four years before current fiscal year	1,206,739	529,690
Four years before current fiscal year, charge-offs	572	338
Prior	1,206,911	892,018
Prior, charge-offs	838	2,107
Revolving loans amortized cost basis	2,316,471	2,164,828
Revolving loans amortized cost basis, charge-offs	0	0
Revolving loans converted to term	9,064	7,223
Revolving loans converted to term, charge-offs	0	0
Total	12,646,808	12,486,027
Total, charge-offs	51,657	28,039
Commercial and industrial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current fiscal year	1,153,289	1,223,491
Current fiscal year, charge-offs	1,178	13,973
Fiscal year before current fiscal year	668,386	498,757
Fiscal year before current fiscal year, charge-offs	37,655	2,711
Two years before current fiscal year	292,762	272,427
Two years before current fiscal year, charge-offs	242	576
Three years before current fiscal year	190,009	93,854
Three years before current fiscal year, charge-offs	8,577	5,665
Four years before current fiscal year	67,109	52,403
Four years before current fiscal year, charge-offs	498	78
Prior	55,389	46,773
Prior, charge-offs	236	261
Revolving loans amortized cost basis	1,613,582	1,483,039
Revolving loans amortized cost basis, charge-offs	0	0
Revolving loans converted to term	691	204
Revolving loans converted to term, charge-offs	0	0
Total	4,041,217	3,670,948
Total, charge-offs	48,386	23,264
Commercial and industrial loans | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current fiscal year	1,110,731	1,175,967
Fiscal year before current fiscal year	625,113	474,601
Two years before current fiscal year	259,418	253,148
Three years before current fiscal year	180,272	86,226
Four years before current fiscal year	62,723	47,910
Prior	53,350	45,020
Revolving loans amortized cost basis	1,495,641	1,393,756
Revolving loans converted to term	136	60
Total	3,787,384	3,476,688
Commercial and industrial loans | Special Mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current fiscal year	14,480	34,356
Fiscal year before current fiscal year	9,872	3,911
Two years before current fiscal year	8,979	1,546
Three years before current fiscal year	2,730	5,149
Four years before current fiscal year	2,731	2,986
Prior	369	241
Revolving loans amortized cost basis	45,459	45,994
Revolving loans converted to term	0	0
Total	84,620	94,183
Commercial and industrial loans | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current fiscal year	28,078	12,311
Fiscal year before current fiscal year	32,296	20,245
Two years before current fiscal year	24,365	17,733
Three years before current fiscal year	7,007	2,479
Four years before current fiscal year	1,655	1,507
Prior	1,670	1,512
Revolving loans amortized cost basis	72,482	40,449
Revolving loans converted to term	555	144
Total	168,108	96,380
Commercial and industrial loans | Doubtful
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current fiscal year	0	857
Fiscal year before current fiscal year	1,105	0
Two years before current fiscal year	0	0
Three years before current fiscal year	0	0
Four years before current fiscal year	0	0
Prior	0	0
Revolving loans amortized cost basis	0	2,840
Revolving loans converted to term	0	0
Total	1,105	3,697
Agricultural land, production and other loans to farmers
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current fiscal year	24,308	35,691
Current fiscal year, charge-offs		0
Fiscal year before current fiscal year	24,089	38,561
Fiscal year before current fiscal year, charge-offs		0
Two years before current fiscal year	35,090	31,511
Two years before current fiscal year, charge-offs		0
Three years before current fiscal year	28,568	31,502
Three years before current fiscal year, charge-offs		0
Four years before current fiscal year	28,766	12,995
Four years before current fiscal year, charge-offs		0
Prior	32,975	25,620
Prior, charge-offs		0
Revolving loans amortized cost basis	64,947	87,534
Revolving loans amortized cost basis, charge-offs		0
Revolving loans converted to term	0	0
Revolving loans converted to term, charge-offs		0
Total	238,743	263,414
Total, charge-offs		0
Agricultural land, production and other loans to farmers | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current fiscal year	23,646	35,633
Fiscal year before current fiscal year	24,039	38,145
Two years before current fiscal year	33,909	31,511
Three years before current fiscal year	27,872	31,048
Four years before current fiscal year	28,250	12,995
Prior	32,445	25,462
Revolving loans amortized cost basis	63,526	87,534
Revolving loans converted to term	0	0
Total	233,687	262,328
Agricultural land, production and other loans to farmers | Special Mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current fiscal year	171	0
Fiscal year before current fiscal year	0	266
Two years before current fiscal year	245	0
Three years before current fiscal year	0	0
Four years before current fiscal year	0	0
Prior	444	122
Revolving loans amortized cost basis	548	0
Revolving loans converted to term	0	0
Total	1,408	388
Agricultural land, production and other loans to farmers | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current fiscal year	491	58
Fiscal year before current fiscal year	50	150
Two years before current fiscal year	936	0
Three years before current fiscal year	696	454
Four years before current fiscal year	516	0
Prior	86	36
Revolving loans amortized cost basis	873	0
Revolving loans converted to term	0	0
Total	3,648	698
Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current fiscal year	244,050	430,923
Current fiscal year, charge-offs		0
Fiscal year before current fiscal year	254,267	271,917
Fiscal year before current fiscal year, charge-offs		0
Two years before current fiscal year	201,097	203,672
Two years before current fiscal year, charge-offs		0
Three years before current fiscal year	87,087	29,218
Three years before current fiscal year, charge-offs		0
Four years before current fiscal year	6,518	7,723
Four years before current fiscal year, charge-offs		0
Prior	8,857	2,357
Prior, charge-offs		0
Revolving loans amortized cost basis	12,828	11,735
Revolving loans amortized cost basis, charge-offs		0
Revolving loans converted to term	0	0
Revolving loans converted to term, charge-offs		0
Total	814,704	957,545
Total, charge-offs		0
Construction | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current fiscal year	186,900	403,578
Fiscal year before current fiscal year	227,462	267,587
Two years before current fiscal year	174,201	198,350
Three years before current fiscal year	73,746	8,372
Four years before current fiscal year	6,518	7,723
Prior	8,851	2,357
Revolving loans amortized cost basis	12,828	11,735
Revolving loans converted to term	0	0
Total	690,506	899,702
Construction | Special Mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current fiscal year	35,150	25,894
Fiscal year before current fiscal year	26,805	0
Two years before current fiscal year	18,197	0
Three years before current fiscal year	13,341	20,846
Four years before current fiscal year	0	0
Prior	6	0
Revolving loans amortized cost basis	0	0
Revolving loans converted to term	0	0
Total	93,499	46,740
Construction | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current fiscal year	22,000	1,451
Fiscal year before current fiscal year	0	4,330
Two years before current fiscal year	8,699	5,322
Three years before current fiscal year	0	0
Four years before current fiscal year	0	0
Prior	0	0
Revolving loans amortized cost basis	0	0
Revolving loans converted to term	0	0
Total	30,699	11,103
Commercial real estate, non-owner occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current fiscal year	403,251	470,118
Current fiscal year, charge-offs	0	0
Fiscal year before current fiscal year	305,444	535,962
Fiscal year before current fiscal year, charge-offs	339	66
Two years before current fiscal year	374,640	542,551
Two years before current fiscal year, charge-offs	3	0
Three years before current fiscal year	443,864	443,320
Three years before current fiscal year, charge-offs	0	0
Four years before current fiscal year	372,634	160,799
Four years before current fiscal year, charge-offs	0	0
Prior	329,837	231,061
Prior, charge-offs	0	0
Revolving loans amortized cost basis	21,681	17,028
Revolving loans amortized cost basis, charge-offs	0	0
Revolving loans converted to term	0	0
Revolving loans converted to term, charge-offs	0	0
Total	2,251,351	2,400,839
Total, charge-offs	342	66
Commercial real estate, non-owner occupied | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current fiscal year	278,958	373,378
Fiscal year before current fiscal year	280,167	504,280
Two years before current fiscal year	346,311	535,327
Three years before current fiscal year	413,970	418,553
Four years before current fiscal year	351,260	141,320
Prior	299,771	200,821
Revolving loans amortized cost basis	21,681	16,744
Revolving loans converted to term	0	0
Total	1,992,118	2,190,423
Commercial real estate, non-owner occupied | Special Mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current fiscal year	81,543	76,382
Fiscal year before current fiscal year	19,499	21,145
Two years before current fiscal year	19,347	7,005
Three years before current fiscal year	23,624	4,531
Four years before current fiscal year	1,768	19,479
Prior	28,452	27,941
Revolving loans amortized cost basis	0	37
Revolving loans converted to term	0	0
Total	174,233	156,520
Commercial real estate, non-owner occupied | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current fiscal year	31,922	20,358
Fiscal year before current fiscal year	5,778	10,537
Two years before current fiscal year	8,982	219
Three years before current fiscal year	6,270	20,236
Four years before current fiscal year	19,606	0
Prior	1,614	2,299
Revolving loans amortized cost basis	0	247
Revolving loans converted to term	0	0
Total	74,172	53,896
Commercial real estate, non-owner occupied | Doubtful
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current fiscal year	10,828
Fiscal year before current fiscal year	0
Two years before current fiscal year	0
Three years before current fiscal year	0
Four years before current fiscal year	0
Prior	0
Revolving loans amortized cost basis	0
Revolving loans converted to term	0
Total	10,828
Commercial real estate, owner occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current fiscal year	127,141	201,554
Current fiscal year, charge-offs	0	48
Fiscal year before current fiscal year	182,523	208,567
Fiscal year before current fiscal year, charge-offs	0	0
Two years before current fiscal year	187,332	269,848
Two years before current fiscal year, charge-offs	0	0
Three years before current fiscal year	246,262	270,527
Three years before current fiscal year, charge-offs	0	0
Four years before current fiscal year	222,657	100,388
Four years before current fiscal year, charge-offs	9	2
Prior	152,608	83,316
Prior, charge-offs	0	0
Revolving loans amortized cost basis	34,228	27,883
Revolving loans amortized cost basis, charge-offs	0	0
Revolving loans converted to term	0	0
Revolving loans converted to term, charge-offs	0	0
Total	1,152,751	1,162,083
Total, charge-offs	9	50
Commercial real estate, owner occupied | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current fiscal year	118,117	176,750
Fiscal year before current fiscal year	167,922	199,821
Two years before current fiscal year	173,512	256,346
Three years before current fiscal year	230,821	263,522
Four years before current fiscal year	214,975	99,180
Prior	144,123	77,485
Revolving loans amortized cost basis	33,613	27,369
Revolving loans converted to term	0	0
Total	1,083,083	1,100,473
Commercial real estate, owner occupied | Special Mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current fiscal year	2,220	6,712
Fiscal year before current fiscal year	2,385	5,034
Two years before current fiscal year	8,616	9,319
Three years before current fiscal year	6,545	2,460
Four years before current fiscal year	4,935	919
Prior	1,402	2,902
Revolving loans amortized cost basis	460	514
Revolving loans converted to term	0	0
Total	26,563	27,860
Commercial real estate, owner occupied | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current fiscal year	6,804	18,092
Fiscal year before current fiscal year	12,216	3,712
Two years before current fiscal year	5,204	4,183
Three years before current fiscal year	8,896	4,545
Four years before current fiscal year	2,747	289
Prior	7,083	2,929
Revolving loans amortized cost basis	155	0
Revolving loans converted to term	0	0
Total	43,105	33,750
Residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current fiscal year	168,430	398,334
Current fiscal year, charge-offs	0	101
Fiscal year before current fiscal year	424,733	704,355
Fiscal year before current fiscal year, charge-offs	124	252
Two years before current fiscal year	692,860	448,226
Two years before current fiscal year, charge-offs	653	208
Three years before current fiscal year	415,668	368,420
Three years before current fiscal year, charge-offs	123	3
Four years before current fiscal year	342,646	100,585
Four years before current fiscal year, charge-offs	21	3
Prior	316,151	263,618
Prior, charge-offs	288	94
Revolving loans amortized cost basis	6,442	5,219
Revolving loans amortized cost basis, charge-offs	0	0
Revolving loans converted to term	13	164
Revolving loans converted to term, charge-offs	0	0
Total	2,366,943	2,288,921
Total, charge-offs	1,209	661
Residential | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current fiscal year	166,807	395,363
Fiscal year before current fiscal year	421,280	695,056
Two years before current fiscal year	680,588	442,495
Three years before current fiscal year	408,017	365,297
Four years before current fiscal year	339,835	98,654
Prior	308,575	254,718
Revolving loans amortized cost basis	6,117	4,988
Revolving loans converted to term	13	83
Total	2,331,232	2,256,654
Residential | Special Mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current fiscal year	1,095	2,167
Fiscal year before current fiscal year	1,975	5,591
Two years before current fiscal year	5,436	3,202
Three years before current fiscal year	3,425	1,924
Four years before current fiscal year	1,745	1,065
Prior	3,585	4,837
Revolving loans amortized cost basis	0	200
Revolving loans converted to term	0	81
Total	17,261	19,067
Residential | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current fiscal year	528	804
Fiscal year before current fiscal year	1,478	3,708
Two years before current fiscal year	6,836	2,529
Three years before current fiscal year	4,226	1,199
Four years before current fiscal year	1,066	866
Prior	3,991	4,063
Revolving loans amortized cost basis	325	31
Revolving loans converted to term	0	0
Total	18,450	13,200
Home equity
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current fiscal year	6,301	9,438
Current fiscal year, charge-offs	0	69
Fiscal year before current fiscal year	6,674	30,499
Fiscal year before current fiscal year, charge-offs	10	213
Two years before current fiscal year	26,315	62,318
Two years before current fiscal year, charge-offs	35	224
Three years before current fiscal year	55,167	12,176
Three years before current fiscal year, charge-offs	23	149
Four years before current fiscal year	11,864	1,107
Four years before current fiscal year, charge-offs	0	193
Prior	4,585	4,000
Prior, charge-offs	264	1,596
Revolving loans amortized cost basis	522,291	491,950
Revolving loans amortized cost basis, charge-offs	0	0
Revolving loans converted to term	7,991	6,083
Revolving loans converted to term, charge-offs	0	0
Total	641,188	617,571
Total, charge-offs	332	2,444
Home equity | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current fiscal year	6,239	9,375
Fiscal year before current fiscal year	6,674	29,784
Two years before current fiscal year	25,743	61,591
Three years before current fiscal year	54,185	11,084
Four years before current fiscal year	11,864	1,092
Prior	4,346	3,875
Revolving loans amortized cost basis	516,564	484,330
Revolving loans converted to term	6,766	5,837
Total	632,381	606,968
Home equity | Special Mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current fiscal year	0	0
Fiscal year before current fiscal year	0	715
Two years before current fiscal year	0	0
Three years before current fiscal year	421	1,092
Four years before current fiscal year	0	15
Prior	33	2
Revolving loans amortized cost basis	3,772	5,031
Revolving loans converted to term	593	149
Total	4,819	7,004
Home equity | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current fiscal year	62	63
Fiscal year before current fiscal year	0	0
Two years before current fiscal year	572	727
Three years before current fiscal year	561	0
Four years before current fiscal year	0	0
Prior	206	123
Revolving loans amortized cost basis	1,955	2,589
Revolving loans converted to term	632	97
Total	3,988	3,599
Individuals' loans for household and other personal expenditures
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current fiscal year	37,648	35,965
Current fiscal year, charge-offs	130	147
Fiscal year before current fiscal year	24,957	49,547
Fiscal year before current fiscal year, charge-offs	609	770
Two years before current fiscal year	34,620	28,525
Two years before current fiscal year, charge-offs	397	342
Three years before current fiscal year	12,585	6,795
Three years before current fiscal year, charge-offs	149	77
Four years before current fiscal year	3,177	2,071
Four years before current fiscal year, charge-offs	44	62
Prior	5,225	5,918
Prior, charge-offs	50	156
Revolving loans amortized cost basis	39,899	38,795
Revolving loans amortized cost basis, charge-offs	0	0
Revolving loans converted to term	369	772
Revolving loans converted to term, charge-offs	0	0
Total	158,480	168,388
Total, charge-offs	1,379	1,554
Individuals' loans for household and other personal expenditures | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current fiscal year	37,606	35,781
Fiscal year before current fiscal year	24,496	49,295
Two years before current fiscal year	34,052	28,387
Three years before current fiscal year	11,078	6,726
Four years before current fiscal year	3,097	2,070
Prior	5,215	5,904
Revolving loans amortized cost basis	39,613	38,619
Revolving loans converted to term	369	772
Total	155,526	167,554
Individuals' loans for household and other personal expenditures | Special Mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current fiscal year	42	184
Fiscal year before current fiscal year	461	246
Two years before current fiscal year	568	138
Three years before current fiscal year	1,507	69
Four years before current fiscal year	80	0
Prior	8	14
Revolving loans amortized cost basis	286	176
Revolving loans converted to term	0	0
Total	2,952	827
Individuals' loans for household and other personal expenditures | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current fiscal year	0	0
Fiscal year before current fiscal year	0	6
Two years before current fiscal year	0	0
Three years before current fiscal year	0	0
Four years before current fiscal year	0	1
Prior	2	0
Revolving loans amortized cost basis	0	0
Revolving loans converted to term	0	0
Total	2	7
Public finance and other commercial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current fiscal year	72,229	65,357
Fiscal year before current fiscal year	53,788	208,347
Two years before current fiscal year	204,870	204,863
Three years before current fiscal year	197,319	155,132
Four years before current fiscal year	151,368	91,619
Prior	301,284	229,355
Revolving loans amortized cost basis	573	1,645
Revolving loans converted to term	0	0
Total	981,431	956,318
Public finance and other commercial loans | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current fiscal year	72,229	65,357
Fiscal year before current fiscal year	53,788	208,347
Two years before current fiscal year	204,870	204,863
Three years before current fiscal year	197,319	155,132
Four years before current fiscal year	151,368	91,619
Prior	301,284	229,355
Revolving loans amortized cost basis	573	1,645
Revolving loans converted to term	0	0
Total	$ 981,431	$ 956,318

LOANS AND ALLOWANCE FOR CREDI_6

LOANS AND ALLOWANCE FOR CREDIT LOSSES - Past Due Aging of Loan Portfolio by Loan Class (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Financing Receivable, Past Due [Line Items]
Loans	$ 12,646,808	$ 12,486,027
Loans > 90 Days or More Past Due And Accruing	14,105	172
Current
Financing Receivable, Past Due [Line Items]
Loans	12,551,804	12,406,783
30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	30,287	34,075
60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	18,773	11,189
90 Days or More Past Due
Financing Receivable, Past Due [Line Items]
Loans	45,944	33,980
Commercial and industrial loans
Financing Receivable, Past Due [Line Items]
Loans	4,041,217	3,670,948
Loans > 90 Days or More Past Due And Accruing	930	86
Commercial and industrial loans | Current
Financing Receivable, Past Due [Line Items]
Loans	4,023,016	3,657,447
Commercial and industrial loans | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	1,906	5,021
Commercial and industrial loans | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	7,805	1,622
Commercial and industrial loans | 90 Days or More Past Due
Financing Receivable, Past Due [Line Items]
Loans	8,490	6,858
Agricultural land, production and other loans to farmers
Financing Receivable, Past Due [Line Items]
Loans	238,743	263,414
Loans > 90 Days or More Past Due And Accruing	0	0
Agricultural land, production and other loans to farmers | Current
Financing Receivable, Past Due [Line Items]
Loans	238,221	263,414
Agricultural land, production and other loans to farmers | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	522	0
Agricultural land, production and other loans to farmers | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	0	0
Agricultural land, production and other loans to farmers | 90 Days or More Past Due
Financing Receivable, Past Due [Line Items]
Loans	0	0
Construction
Financing Receivable, Past Due [Line Items]
Loans	814,704	957,545
Loans > 90 Days or More Past Due And Accruing	0	0
Construction | Current
Financing Receivable, Past Due [Line Items]
Loans	810,536	955,588
Construction | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	2,522	0
Construction | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	1,646	1,957
Construction | 90 Days or More Past Due
Financing Receivable, Past Due [Line Items]
Loans	0	0
Commercial real estate, non-owner occupied
Financing Receivable, Past Due [Line Items]
Loans	2,251,351	2,400,839
Loans > 90 Days or More Past Due And Accruing	12,989	0
Commercial real estate, non-owner occupied | Current
Financing Receivable, Past Due [Line Items]
Loans	2,225,782	2,376,184
Commercial real estate, non-owner occupied | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	8,680	12,995
Commercial real estate, non-owner occupied | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	485	195
Commercial real estate, non-owner occupied | 90 Days or More Past Due
Financing Receivable, Past Due [Line Items]
Loans	16,404	11,465
Commercial real estate, owner occupied
Financing Receivable, Past Due [Line Items]
Loans	1,152,751	1,162,083
Loans > 90 Days or More Past Due And Accruing	0	0
Commercial real estate, owner occupied | Current
Financing Receivable, Past Due [Line Items]
Loans	1,150,327	1,161,869
Commercial real estate, owner occupied | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	501	0
Commercial real estate, owner occupied | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	891	104
Commercial real estate, owner occupied | 90 Days or More Past Due
Financing Receivable, Past Due [Line Items]
Loans	1,032	110
Residential
Financing Receivable, Past Due [Line Items]
Loans	2,366,943	2,288,921
Loans > 90 Days or More Past Due And Accruing	166	0
Residential | Current
Financing Receivable, Past Due [Line Items]
Loans	2,334,312	2,259,496
Residential | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	10,377	11,810
Residential | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	6,029	5,472
Residential | 90 Days or More Past Due
Financing Receivable, Past Due [Line Items]
Loans	16,225	12,143
Home equity
Financing Receivable, Past Due [Line Items]
Loans	641,188	617,571
Loans > 90 Days or More Past Due And Accruing	20	52
Home equity | Current
Financing Receivable, Past Due [Line Items]
Loans	632,653	608,948
Home equity | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	3,212	3,614
Home equity | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	1,532	1,647
Home equity | 90 Days or More Past Due
Financing Receivable, Past Due [Line Items]
Loans	3,791	3,362
Individuals' loans for household and other personal expenditures
Financing Receivable, Past Due [Line Items]
Loans	158,480	168,388
Loans > 90 Days or More Past Due And Accruing	0	0
Individuals' loans for household and other personal expenditures | Current
Financing Receivable, Past Due [Line Items]
Loans	155,526	167,553
Individuals' loans for household and other personal expenditures | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	2,567	635
Individuals' loans for household and other personal expenditures | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	385	192
Individuals' loans for household and other personal expenditures | 90 Days or More Past Due
Financing Receivable, Past Due [Line Items]
Loans	2	8
Public finance and other commercial loans
Financing Receivable, Past Due [Line Items]
Loans	981,431	956,318
Loans > 90 Days or More Past Due And Accruing	0	34
Public finance and other commercial loans | Current
Financing Receivable, Past Due [Line Items]
Loans	981,431	956,284
Public finance and other commercial loans | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	0	0
Public finance and other commercial loans | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	0	0
Public finance and other commercial loans | 90 Days or More Past Due
Financing Receivable, Past Due [Line Items]
Loans	$ 0	$ 34

LOANS AND ALLOWANCE FOR CREDI_7

LOANS AND ALLOWANCE FOR CREDIT LOSSES - Non-Accrual Loans by Loan Class (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Financing Receivable, Past Due [Line Items]
Nonaccrual Loans	$ 59,088	$ 53,580
Nonaccrual Loans with no Allowance for Credit Losses	15,211	14,367
Commercial and industrial loans
Financing Receivable, Past Due [Line Items]
Nonaccrual Loans	8,612	9,050
Nonaccrual Loans with no Allowance for Credit Losses	2,459	1,015
Agricultural land, production and other loans to farmers
Financing Receivable, Past Due [Line Items]
Nonaccrual Loans	81	58
Nonaccrual Loans with no Allowance for Credit Losses	0	0
Construction
Financing Receivable, Past Due [Line Items]
Nonaccrual Loans	0	520
Nonaccrual Loans with no Allowance for Credit Losses	0	0
Commercial real estate, non-owner occupied
Financing Receivable, Past Due [Line Items]
Nonaccrual Loans	23,283	11,932
Nonaccrual Loans with no Allowance for Credit Losses	10,175	11,095
Commercial real estate, owner occupied
Financing Receivable, Past Due [Line Items]
Nonaccrual Loans	3,237	3,041
Nonaccrual Loans with no Allowance for Credit Losses	2,577	2,257
Residential
Financing Receivable, Past Due [Line Items]
Nonaccrual Loans	18,905	25,140
Nonaccrual Loans with no Allowance for Credit Losses	0	0
Home equity
Financing Receivable, Past Due [Line Items]
Nonaccrual Loans	4,925	3,820
Nonaccrual Loans with no Allowance for Credit Losses	0	0
Individuals' loans for household and other personal expenditures
Financing Receivable, Past Due [Line Items]
Nonaccrual Loans	45	19
Nonaccrual Loans with no Allowance for Credit Losses	$ 0	$ 0

LOANS AND ALLOWANCE FOR CREDI_8

LOANS AND ALLOWANCE FOR CREDIT LOSSES - Amortized Cost Basis of Collateral Dependent Loans (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2024	Jun. 30, 2024	Dec. 31, 2023	Sep. 30, 2023	Jun. 30, 2023	Dec. 31, 2022
Financing Receivable, Allowance for Credit Loss [Line Items]
Individually evaluated for impairment	$ 66,670		$ 60,666
Allowance on Collateral Dependent Loans	187,828	$ 189,537	204,934	$ 205,782	$ 221,147	$ 223,277
Commercial and industrial loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Individually evaluated for impairment	15,685		32,029
Construction
Financing Receivable, Allowance for Credit Loss [Line Items]
Individually evaluated for impairment	4		7
Commercial real estate, non-owner occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
Individually evaluated for impairment	38,959		17,516
Commercial real estate, owner occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
Individually evaluated for impairment	10,575		9,452
Residential
Financing Receivable, Allowance for Credit Loss [Line Items]
Individually evaluated for impairment	1,241		1,439
Home equity
Financing Receivable, Allowance for Credit Loss [Line Items]
Individually evaluated for impairment	206		223
Allowance on Collateral Dependent Loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Increase (decrease) in individually evaluated for impairment	6,000
Increase (decrease) allowance for credit loss, recovery	(4,400)
Allowance on Collateral Dependent Loans	7,400		11,769
Allowance on Collateral Dependent Loans | Commercial and industrial loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Increase (decrease) in individually evaluated for impairment	(16,300)
Increase (decrease) allowance for credit loss, recovery	(9,200)
Allowance on Collateral Dependent Loans	2,312		11,474
Allowance on Collateral Dependent Loans | Construction
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance on Collateral Dependent Loans	0		0
Allowance on Collateral Dependent Loans | Commercial real estate, non-owner occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
Increase (decrease) in individually evaluated for impairment	21,400
Increase (decrease) allowance for credit loss, recovery	4,800
Allowance on Collateral Dependent Loans	4,864		35
Allowance on Collateral Dependent Loans | Commercial real estate, owner occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance on Collateral Dependent Loans	0		0
Allowance on Collateral Dependent Loans | Residential
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance on Collateral Dependent Loans	198		230
Allowance on Collateral Dependent Loans | Home equity
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance on Collateral Dependent Loans	26		30
Commercial Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Individually evaluated for impairment	49,534		26,968
Commercial Real Estate | Commercial and industrial loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Individually evaluated for impairment	0		0
Commercial Real Estate | Construction
Financing Receivable, Allowance for Credit Loss [Line Items]
Individually evaluated for impairment	0		0
Commercial Real Estate | Commercial real estate, non-owner occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
Individually evaluated for impairment	38,959		17,516
Commercial Real Estate | Commercial real estate, owner occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
Individually evaluated for impairment	10,575		9,452
Commercial Real Estate | Residential
Financing Receivable, Allowance for Credit Loss [Line Items]
Individually evaluated for impairment	0		0
Commercial Real Estate | Home equity
Financing Receivable, Allowance for Credit Loss [Line Items]
Individually evaluated for impairment	0		0
Residential Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Individually evaluated for impairment	1,451		1,669
Residential Real Estate | Commercial and industrial loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Individually evaluated for impairment	0		0
Residential Real Estate | Construction
Financing Receivable, Allowance for Credit Loss [Line Items]
Individually evaluated for impairment	4		7
Residential Real Estate | Commercial real estate, non-owner occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
Individually evaluated for impairment	0		0
Residential Real Estate | Commercial real estate, owner occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
Individually evaluated for impairment	0		0
Residential Real Estate | Residential
Financing Receivable, Allowance for Credit Loss [Line Items]
Individually evaluated for impairment	1,241		1,439
Residential Real Estate | Home equity
Financing Receivable, Allowance for Credit Loss [Line Items]
Individually evaluated for impairment	206		223
Other
Financing Receivable, Allowance for Credit Loss [Line Items]
Individually evaluated for impairment	15,685		32,029
Other | Commercial and industrial loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Individually evaluated for impairment	15,685		32,029
Other | Construction
Financing Receivable, Allowance for Credit Loss [Line Items]
Individually evaluated for impairment	0		0
Other | Commercial real estate, non-owner occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
Individually evaluated for impairment	0		0
Other | Commercial real estate, owner occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
Individually evaluated for impairment	0		0
Other | Residential
Financing Receivable, Allowance for Credit Loss [Line Items]
Individually evaluated for impairment	0		0
Other | Home equity
Financing Receivable, Allowance for Credit Loss [Line Items]
Individually evaluated for impairment	$ 0		$ 0

LOANS AND ALLOWANCE FOR CREDI_9

LOANS AND ALLOWANCE FOR CREDIT LOSSES - Troubled Debt Restructurings by Modification Type (Details) - USD ($)	3 Months Ended		6 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Jun. 30, 2024	Jun. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2023	Dec. 31, 2022
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Modifications Made to Borrowers					$ 91,955,000	$ 48,636,000
Commercial and industrial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Modifications Made to Borrowers					$ 26,372,000	$ 15,969,000
% of Total Class of Financing Receivable	0.49%	0.25%			0.60%	0.46%
Agricultural land, production and other loans to farmers
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Modifications Made to Borrowers					$ 22,000	$ 34,000
% of Total Class of Financing Receivable						0.01%
Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Modifications Made to Borrowers					$ 22,915,000	$ 13,000
% of Total Class of Financing Receivable	2.81%				2.81%	0%
Commercial real estate, non-owner occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Modifications Made to Borrowers					$ 31,492,000	$ 17,765,000
% of Total Class of Financing Receivable	0.94%	0.50%			1.32%	0.75%
Commercial real estate, owner occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Modifications Made to Borrowers					$ 7,523,000	$ 14,319,000
% of Total Class of Financing Receivable	0.51%	0.60%			0.54%	1.24%
Residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Modifications Made to Borrowers					$ 3,379,000	$ 472,000
% of Total Class of Financing Receivable	0.04%				0.13%	0.02%
Home equity
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Modifications Made to Borrowers					$ 252,000	$ 63,000
% of Total Class of Financing Receivable	0.01%	0.01%			0.03%	0.01%
Individuals' loans for household and other personal expenditures
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Modifications Made to Borrowers						$ 1,000
% of Total Class of Financing Receivable		0%				0%
Payment Delay
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Modifications Made to Borrowers	$ 10,093,000	$ 908,000			$ 13,011,000	$ 6,510,000
Payment Delay | Commercial and industrial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Modifications Made to Borrowers	9,600,000	908,000			11,080,000	908,000
Payment Delay		24,000			180,000	24,000
Payment Delay | Agricultural land, production and other loans to farmers
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Modifications Made to Borrowers						0
Payment Delay | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Modifications Made to Borrowers	0				0	0
Payment Delay | Commercial real estate, non-owner occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Modifications Made to Borrowers	0	0			0	0
Payment Delay | Commercial real estate, owner occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Modifications Made to Borrowers	0	0			0	5,602,000
Payment Delay						4,500,000
Payment Delay | Residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Modifications Made to Borrowers	493,000				1,931,000	0
Payment Delay	8,000				26,000
Payment Delay | Home equity
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Modifications Made to Borrowers	0	0			0	0
Payment Delay | Individuals' loans for household and other personal expenditures
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Modifications Made to Borrowers		0				0
Payment Delay | Weighted-average | Commercial and industrial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Payment Delay	200,000
Term Extension
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Modifications Made to Borrowers	27,461,000	26,570,000			39,339,000	35,397,000
Term Extension | Commercial and industrial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Modifications Made to Borrowers	$ 10,333,000	$ 7,734,000			$ 12,880,000	$ 14,822,000
Term Extension	6 months	8 months			9 months	8 months
Term Extension | Agricultural land, production and other loans to farmers
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Modifications Made to Borrowers						$ 34,000
Term Extension						60 months
Term Extension | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Modifications Made to Borrowers	$ 915,000				$ 915,000	$ 13,000
Term Extension	6 months				6 months	24 months
Term Extension | Commercial real estate, non-owner occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Modifications Made to Borrowers	$ 10,254,000	$ 11,823,000			$ 18,933,000	$ 11,823,000
Term Extension	8 months	11 months			13 months	10 months
Term Extension | Commercial real estate, owner occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Modifications Made to Borrowers	$ 5,841,000	$ 6,950,000			$ 6,208,000	$ 8,642,000
Term Extension	8 months	4 months			13 months	4 months
Term Extension | Residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Modifications Made to Borrowers	$ 56,000				$ 341,000	$ 0
Term Extension	92 months				20 months
Term Extension | Home equity
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Modifications Made to Borrowers	$ 62,000	$ 63,000			$ 62,000	$ 63,000
Term Extension	6 months	5 months			6 months	5 months
Term Extension | Individuals' loans for household and other personal expenditures
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Modifications Made to Borrowers		$ 0				$ 0
Interest Rate Reduction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Modifications Made to Borrowers					$ 247,000
Interest Rate Reduction | Commercial and industrial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Modifications Made to Borrowers					$ 247,000
Reduced the weighted average contractual interest rate					8%		9%
Interest Rate Reduction | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Modifications Made to Borrowers					$ 0
Interest Rate Reduction | Commercial real estate, non-owner occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Modifications Made to Borrowers					0
Interest Rate Reduction | Commercial real estate, owner occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Modifications Made to Borrowers					0
Interest Rate Reduction | Residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Modifications Made to Borrowers					0
Interest Rate Reduction | Home equity
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Modifications Made to Borrowers					0
Combination Payment Delay & Term Extension
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Modifications Made to Borrowers	$ 22,000,000	1,000			22,462,000	473,000
Combination Payment Delay & Term Extension | Commercial and industrial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Modifications Made to Borrowers	0	0			17,000	0
Payment Delay					$ 4,900
Term Extension					3 months
Combination Payment Delay & Term Extension | Agricultural land, production and other loans to farmers
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Modifications Made to Borrowers						0
Combination Payment Delay & Term Extension | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Modifications Made to Borrowers	22,000,000				$ 22,000,000	0
Payment Delay	$ 475,000				$ 475,000
Term Extension	4 months				4 months
Combination Payment Delay & Term Extension | Commercial real estate, non-owner occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Modifications Made to Borrowers	$ 0	0			$ 0	0
Combination Payment Delay & Term Extension | Commercial real estate, owner occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Modifications Made to Borrowers	0	0			0	0
Combination Payment Delay & Term Extension | Residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Modifications Made to Borrowers	0				283,000	472,000
Payment Delay		$ 300			$ 8,000	$ 3,400
Term Extension		3 months			153 months	3 months
Combination Payment Delay & Term Extension | Home equity
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Modifications Made to Borrowers	0	$ 0			$ 162,000	$ 0
Payment Delay					$ 7,800	$ 300
Term Extension					60 months	3 months
Combination Payment Delay & Term Extension | Individuals' loans for household and other personal expenditures
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Modifications Made to Borrowers		1,000				$ 1,000
Combination Interest Rate Reduction & Term Extension
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Modifications Made to Borrowers	10,859,000	134,000			$ 10,859,000	6,256,000
Combination Interest Rate Reduction & Term Extension | Commercial and industrial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Modifications Made to Borrowers	$ 31,000	$ 134,000			$ 31,000	$ 239,000
Term Extension	48 months	14 months			48 months	13 months
Reduced the weighted average contractual interest rate	8.05%	7.62%	9.50%	10.75%	8.05%	7.39%	9.50%	9.66%
Combination Interest Rate Reduction & Term Extension | Agricultural land, production and other loans to farmers
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Modifications Made to Borrowers						$ 0
Combination Interest Rate Reduction & Term Extension | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Modifications Made to Borrowers	$ 0				$ 0	0
Combination Interest Rate Reduction & Term Extension | Commercial real estate, non-owner occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Modifications Made to Borrowers	$ 10,828,000	$ 0			$ 10,828,000	$ 5,942,000
Term Extension	8 months				8 months	41 months
Reduced the weighted average contractual interest rate	7.88%		12.38%		7.88%	7.40%	12.38%	7.81%
Combination Interest Rate Reduction & Term Extension | Commercial real estate, owner occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Modifications Made to Borrowers	$ 0	0			$ 0	$ 75,000
Term Extension						114 months
Reduced the weighted average contractual interest rate						6.61%		10.25%
Combination Interest Rate Reduction & Term Extension | Residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Modifications Made to Borrowers	0				0	$ 0
Combination Interest Rate Reduction & Term Extension | Home equity
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Modifications Made to Borrowers	0	0			0	0
Combination Interest Rate Reduction & Term Extension | Individuals' loans for household and other personal expenditures
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Modifications Made to Borrowers		$ 0				$ 0
Combination Interest Rate Reduction, Term Extension, & Payment Delay
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Modifications Made to Borrowers	304,000				529,000
Combination Interest Rate Reduction, Term Extension, & Payment Delay | Commercial and industrial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Modifications Made to Borrowers	0				0
Combination Interest Rate Reduction, Term Extension, & Payment Delay | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Modifications Made to Borrowers	0				0
Combination Interest Rate Reduction, Term Extension, & Payment Delay | Commercial real estate, non-owner occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Modifications Made to Borrowers	0				0
Combination Interest Rate Reduction, Term Extension, & Payment Delay | Commercial real estate, owner occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Modifications Made to Borrowers	0				0
Combination Interest Rate Reduction, Term Extension, & Payment Delay | Residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Modifications Made to Borrowers	304,000				529,000
Payment Delay	$ 14,000				$ 14,000
Term Extension	149 months				91 months
Reduced the weighted average contractual interest rate	3.31%		5.73%		4.03%		5.74%
Combination Interest Rate Reduction, Term Extension, & Payment Delay | Home equity
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Modifications Made to Borrowers	$ 0				$ 0

LOANS AND ALLOWANCE FOR CRED_10

LOANS AND ALLOWANCE FOR CREDIT LOSSES - Payment Status (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loan Modifications Made to Borrowers	$ 91,955	$ 48,636
Current
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loan Modifications Made to Borrowers	78,179	47,367
30-59 Days Past Due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loan Modifications Made to Borrowers	8,680	1
60-89 Days Past Due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loan Modifications Made to Borrowers	2,177	1,268
90 Days or More Past Due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loan Modifications Made to Borrowers	2,919
Commercial and industrial loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loan Modifications Made to Borrowers	26,372	15,969
Commercial and industrial loans | Current
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loan Modifications Made to Borrowers	24,445	15,863
Commercial and industrial loans | 30-59 Days Past Due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loan Modifications Made to Borrowers	0	0
Commercial and industrial loans | 60-89 Days Past Due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loan Modifications Made to Borrowers	1,927	106
Commercial and industrial loans | 90 Days or More Past Due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loan Modifications Made to Borrowers	0
Agricultural land, production and other loans to farmers
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loan Modifications Made to Borrowers	22	34
Agricultural land, production and other loans to farmers | Current
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loan Modifications Made to Borrowers	22	34
Agricultural land, production and other loans to farmers | 30-59 Days Past Due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loan Modifications Made to Borrowers	0	0
Agricultural land, production and other loans to farmers | 60-89 Days Past Due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loan Modifications Made to Borrowers	0	0
Agricultural land, production and other loans to farmers | 90 Days or More Past Due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loan Modifications Made to Borrowers	0
Construction
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loan Modifications Made to Borrowers	22,915	13
Construction | Current
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loan Modifications Made to Borrowers	22,915	13
Construction | 30-59 Days Past Due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loan Modifications Made to Borrowers	0	0
Construction | 60-89 Days Past Due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loan Modifications Made to Borrowers	0	0
Construction | 90 Days or More Past Due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loan Modifications Made to Borrowers	0
Commercial real estate, non-owner occupied
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loan Modifications Made to Borrowers	31,492	17,765
Commercial real estate, non-owner occupied | Current
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loan Modifications Made to Borrowers	21,082	17,765
Commercial real estate, non-owner occupied | 30-59 Days Past Due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loan Modifications Made to Borrowers	8,680	0
Commercial real estate, non-owner occupied | 60-89 Days Past Due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loan Modifications Made to Borrowers	0	0
Commercial real estate, non-owner occupied | 90 Days or More Past Due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loan Modifications Made to Borrowers	1,730
Commercial real estate, owner occupied
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loan Modifications Made to Borrowers	7,523	14,319
Commercial real estate, owner occupied | Current
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loan Modifications Made to Borrowers	7,523	13,157
Commercial real estate, owner occupied | 30-59 Days Past Due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loan Modifications Made to Borrowers	0	0
Commercial real estate, owner occupied | 60-89 Days Past Due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loan Modifications Made to Borrowers	0	1,162
Commercial real estate, owner occupied | 90 Days or More Past Due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loan Modifications Made to Borrowers	0
Residential
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loan Modifications Made to Borrowers	3,379	472
Residential | Current
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loan Modifications Made to Borrowers	1,940	472
Residential | 30-59 Days Past Due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loan Modifications Made to Borrowers	0	0
Residential | 60-89 Days Past Due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loan Modifications Made to Borrowers	250	0
Residential | 90 Days or More Past Due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loan Modifications Made to Borrowers	1,189
Home equity
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loan Modifications Made to Borrowers	252	63
Home equity | Current
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loan Modifications Made to Borrowers	252	63
Home equity | 30-59 Days Past Due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loan Modifications Made to Borrowers	0	0
Home equity | 60-89 Days Past Due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loan Modifications Made to Borrowers	0	0
Home equity | 90 Days or More Past Due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loan Modifications Made to Borrowers	$ 0
Individuals' loans for household and other personal expenditures
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loan Modifications Made to Borrowers		1
Individuals' loans for household and other personal expenditures | Current
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loan Modifications Made to Borrowers		0
Individuals' loans for household and other personal expenditures | 30-59 Days Past Due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loan Modifications Made to Borrowers		1
Individuals' loans for household and other personal expenditures | 60-89 Days Past Due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loan Modifications Made to Borrowers		$ 0

LOANS AND ALLOWANCE FOR CRED_11

LOANS AND ALLOWANCE FOR CREDIT LOSSES - Changes in Allowance for Loan Losses by Loan Segment (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	$ 189,537	$ 221,147	$ 204,934	$ 223,277
Provision for credit losses - loans	5,000	5,000	31,500	5,000
Recoveries on loans	894	546	3,051	1,835
Loans charged off	(7,603)	(20,911)	(51,657)	(24,330)
Ending balance	187,828	205,782	187,828	205,782
Commercial
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	91,217	108,373	97,348	102,216
Provision for credit losses - loans	8,456	3,020	43,249	9,460
Recoveries on loans	505	179	1,592	775
Loans charged off	(6,375)	(19,833)	(48,386)	(20,712)
Ending balance	93,803	91,739	93,803	91,739
Commercial Real Estate
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	45,514	39,157	44,048	46,839
Provision for credit losses - loans	1,873	4,901	3,476	(2,833)
Recoveries on loans	18	0	232	56
Loans charged off	0	0	(351)	(4)
Ending balance	47,405	44,058	47,405	44,058
Construction
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	14,360	30,073	24,823	28,955
Provision for credit losses - loans	(2,609)	140	(13,072)	1,258
Recoveries on loans	0	0	0	0
Loans charged off	0	0	0	0
Ending balance	11,751	30,213	11,751	30,213
Consumer & Residential
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	38,446	43,544	38,715	45,267
Provision for credit losses - loans	(2,720)	(3,061)	(2,153)	(2,885)
Recoveries on loans	371	367	1,227	1,004
Loans charged off	(1,228)	(1,078)	(2,920)	(3,614)
Ending balance	$ 34,869	$ 39,772	$ 34,869	$ 39,772

LOANS AND ALLOWANCE FOR CRED_12

LOANS AND ALLOWANCE FOR CREDIT LOSSES - Amounts of Commitments (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Loan commitments to extend credit
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Amounts of commitments	$ 5,493,144	$ 5,025,790
Standby letters of credit
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Amounts of commitments	$ 66,043	$ 65,580

LOANS AND ALLOWANCE FOR CRED_13

LOANS AND ALLOWANCE FOR CREDIT LOSSES - Allowance for Credit Losses, Off-balance Sheet (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Beginning balance	$ 19,500	$ 23,300	$ 19,500	$ 23,300
Provision for credit losses - unfunded commitments	0	(3,000)	0	(3,000)
Ending balance	$ 19,500	$ 20,300	$ 19,500	$ 20,300

DERIVATIVE FINANCIAL INSTRUME_3

DERIVATIVE FINANCIAL INSTRUMENTS - Narrative (Details) $ in Millions	Sep. 30, 2024 USD ($) instrument	Dec. 31, 2023 instrument
Derivative [Line Items]
Termination value of derivatives in a net liability position	$ 12.6
Derivative collateral posted	$ 1.3
Interest rate swaps | Derivatives in Cash Flow Hedging Relationships | Derivatives Designated as Hedges
Derivative [Line Items]
Number of interest rate derivatives held | instrument	0	0

DERIVATIVE FINANCIAL INSTRUME_4

DERIVATIVE FINANCIAL INSTRUMENTS - Amount of Loss Recognized in Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Derivative [Line Items]
Amount of Loss Recognized in Other Comprehensive Income (Loss) on Derivatives (Effective Portion)	$ 0	$ (66)	$ 0	$ (179)
Derivatives Designated as Hedging Instruments | Derivatives in Cash Flow Hedging Relationships | Interest Rate Products
Derivative [Line Items]
Amount of Loss Recognized in Other Comprehensive Income (Loss) on Derivatives (Effective Portion)	$ 0	$ (66)	$ 0	$ (179)

DERIVATIVE FINANCIAL INSTRUME_5

DERIVATIVE FINANCIAL INSTRUMENTS - Effect of Derivative Financial Instruments on Income Statement (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Derivative [Line Items]
Amount of Gain Reclassed from Accumulated Other Comprehensive Loss into Income (Effective Portion)	$ 0	$ 0	$ 0	$ (15)
Derivatives Designated as Hedging Instruments | Interest rate contracts | Interest Expense | Cash Flow Hedging
Derivative [Line Items]
Amount of Gain Reclassed from Accumulated Other Comprehensive Loss into Income (Effective Portion)	$ 0	$ 0	$ 0	$ (15)

DERIVATIVE FINANCIAL INSTRUME_6

DERIVATIVE FINANCIAL INSTRUMENTS - Fair Value of Derivative Financial Instruments and Their Classification on Balance Sheet (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Fair Value
Assets Derivatives	$ 62,270	$ 79,379
Liabilities Derivatives	61,386	79,008
Derivatives Not Designated as Hedging Instruments | Other Assets
Notional Amount
Included in other assets	1,452,549	1,393,813
Fair Value
Assets Derivatives	62,270	79,379
Derivatives Not Designated as Hedging Instruments | Other Liabilities
Notional Amount
Included in other liabilities	1,377,045	1,382,262
Fair Value
Liabilities Derivatives	61,386	79,008
Derivatives Not Designated as Hedging Instruments | Interest rate swaps | Other Assets
Notional Amount
Included in other assets	1,333,382	1,355,947
Fair Value
Assets Derivatives	61,207	78,743
Derivatives Not Designated as Hedging Instruments | Interest rate swaps | Other Liabilities
Notional Amount
Included in other liabilities	1,332,410	1,355,947
Fair Value
Liabilities Derivatives	61,248	78,811
Derivatives Not Designated as Hedging Instruments | Forward contracts related to mortgage loans to be delivered for sale | Other Assets
Notional Amount
Included in other assets	80,528	15,160
Fair Value
Assets Derivatives	840	469
Derivatives Not Designated as Hedging Instruments | Forward contracts related to mortgage loans to be delivered for sale | Other Liabilities
Notional Amount
Included in other liabilities	16,500	25,290
Fair Value
Liabilities Derivatives	61	191
Derivatives Not Designated as Hedging Instruments | Interest rate lock commitments | Other Assets
Notional Amount
Included in other assets	38,639	22,706
Fair Value
Assets Derivatives	223	167
Derivatives Not Designated as Hedging Instruments | Interest rate lock commitments | Other Liabilities
Notional Amount
Included in other liabilities	28,135	1,025
Fair Value
Liabilities Derivatives	$ 77	$ 6

DERIVATIVE FINANCIAL INSTRUME_7

DERIVATIVE FINANCIAL INSTRUMENTS - Gain (Loss) Recognized Into Income Related to Non-designated Hedging Instruments (Details) - Derivatives Not Designated as Hedging Instruments - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Derivative [Line Items]
Amount of Gain (Loss) Recognized into Income on Derivatives	$ (936)	$ 882	$ (588)	$ 1,558
Net gains and fees on sales of loans | Forward contracts related to mortgage loans to be delivered for sale
Derivative [Line Items]
Amount of Gain (Loss) Recognized into Income on Derivatives	(966)	982	(573)	1,691
Net gains and fees on sales of loans | Interest rate lock commitments
Derivative [Line Items]
Amount of Gain (Loss) Recognized into Income on Derivatives	$ 30	$ (100)	$ (15)	$ (133)

FAIR VALUES OF FINANCIAL INST_3

FAIR VALUES OF FINANCIAL INSTRUMENTS - Fair Value Measurements of Assets and Liabilities Measured at Fair Value on Recurring Basis (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment securities available for sale	$ 1,553,496	$ 1,627,112
U.S. Government-sponsored agency securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment securities available for sale	85,033	95,307
State and municipal
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment securities available for sale	984,111	1,065,171
U.S. Government-sponsored mortgage-backed securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment securities available for sale	472,046	454,815
Corporate obligations
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment securities available for sale	12,306	11,819
Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment securities available for sale	0	0
Significant Other Observable Inputs (Level 2)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment securities available for sale	1,551,015	1,623,802
Significant Unobservable Inputs (Level 3)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment securities available for sale	2,481	3,310
Recurring
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative assets	62,270	79,379
Derivative liabilities	61,386	79,008
Recurring | U.S. Government-sponsored agency securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment securities available for sale	85,033	95,307
Recurring | State and municipal
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment securities available for sale	984,111	1,065,171
Recurring | U.S. Government-sponsored mortgage-backed securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment securities available for sale	472,046	454,815
Recurring | Corporate obligations
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment securities available for sale	12,306	11,819
Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative assets	0	0
Derivative liabilities	0	0
Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | U.S. Government-sponsored agency securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment securities available for sale	0	0
Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | State and municipal
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment securities available for sale	0	0
Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | U.S. Government-sponsored mortgage-backed securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment securities available for sale	0	0
Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Corporate obligations
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment securities available for sale	0	0
Recurring | Significant Other Observable Inputs (Level 2)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative assets	62,270	79,379
Derivative liabilities	61,386	79,008
Recurring | Significant Other Observable Inputs (Level 2) | U.S. Government-sponsored agency securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment securities available for sale	85,033	95,307
Recurring | Significant Other Observable Inputs (Level 2) | State and municipal
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment securities available for sale	981,665	1,061,896
Recurring | Significant Other Observable Inputs (Level 2) | U.S. Government-sponsored mortgage-backed securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment securities available for sale	472,042	454,811
Recurring | Significant Other Observable Inputs (Level 2) | Corporate obligations
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment securities available for sale	12,275	11,788
Recurring | Significant Unobservable Inputs (Level 3)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative assets	0	0
Derivative liabilities	0	0
Recurring | Significant Unobservable Inputs (Level 3) | U.S. Government-sponsored agency securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment securities available for sale	0	0
Recurring | Significant Unobservable Inputs (Level 3) | State and municipal
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment securities available for sale	2,446	3,275
Recurring | Significant Unobservable Inputs (Level 3) | U.S. Government-sponsored mortgage-backed securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment securities available for sale	4	4
Recurring | Significant Unobservable Inputs (Level 3) | Corporate obligations
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment securities available for sale	$ 31	$ 31

FAIR VALUES OF FINANCIAL INST_4

FAIR VALUES OF FINANCIAL INSTRUMENTS - Reconciliation of Beginning and Ending Balances of Recurring Fair Value Measurements using Significant Unobservable Level 3 Inputs (Details) - Recurring - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Available for Sale Securities
Balance at beginning of the period	$ 3,224	$ 3,348	$ 3,310	$ 3,439
Included in other comprehensive income	65	(30)	76	(28)
Principal payments	(808)	(90)	(905)	(183)
Ending balance	$ 2,481	$ 3,228	$ 2,481	$ 3,228

FAIR VALUES OF FINANCIAL INST_5

FAIR VALUES OF FINANCIAL INSTRUMENTS - Valuation Methodologies Used for Instruments Measured at Fair Value on Non-Recurring Basis (Details) - Nonrecurring - Collateral dependent loans - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Collateral dependent loans	$ 55,211	$ 55,020
Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Collateral dependent loans	0	0
Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Collateral dependent loans	0	0
Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Collateral dependent loans	$ 55,211	$ 55,020

FAIR VALUES OF FINANCIAL INST_6

FAIR VALUES OF FINANCIAL INSTRUMENTS - Unobservable Inputs Used in Recurring and Nonrecurring Level 3 Fair Value Measurements Other Than Goodwill (Details) - Significant Unobservable Inputs (Level 3) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2024 USD ($)	Dec. 31, 2023 USD ($)
State and municipal securities | Discounted cash flow
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value	$ 2,446	$ 3,275
State and municipal securities | Discounted cash flow | Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Maturity/Call date	1 month	1 month
State and municipal securities | Discounted cash flow | Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Maturity/Call date	6 years	15 years
US Muni BQ curve	BBB	BBB
State and municipal securities | Discounted cash flow | Discount rate | Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement input	0.031	0.036
State and municipal securities | Discounted cash flow | Discount rate | Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement input	0.043	0.047
State and municipal securities | Discounted cash flow | Weighted-average coupon | Weighted-average
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement input	0.036	0.033
Corporate obligations and U.S. Government-sponsored mortgage-backed securities | Discounted cash flow
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value	$ 35	$ 35
Corporate obligations and U.S. Government-sponsored mortgage-backed securities | Discounted cash flow | Weighted-average coupon | Weighted-average
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement input	0	0
Corporate obligations and U.S. Government-sponsored mortgage-backed securities | Discounted cash flow | Risk free rate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement input	0.0026	0.0026
Corporate obligations and U.S. Government-sponsored mortgage-backed securities | Discounted cash flow | plus premium for illiquidity (basis points)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement input	0.0200	0.0200
Collateral dependent loans | Collateral based measurements
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value	$ 55,211	$ 55,020
Collateral dependent loans | Collateral based measurements | Discount to reflect current market conditions and ultimate collectability | Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement input	0	0
Collateral dependent loans | Collateral based measurements | Discount to reflect current market conditions and ultimate collectability | Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement input	0.15	0.10
Collateral dependent loans | Collateral based measurements | Discount to reflect current market conditions and ultimate collectability | Weighted-average
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement input	0.121	0.041

FAIR VALUES OF FINANCIAL INST_7

FAIR VALUES OF FINANCIAL INSTRUMENTS - Estimated Fair Values of Financial Instruments (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Assets:
Cash and due from banks	$ 84,719	$ 112,649
Interest-bearing deposits	359,126	436,080
Investment securities available for sale	1,553,496	1,627,112
Investment securities held to maturity, net	1,823,006	1,870,374
Loans held for sale	40,652	18,934
Net loans	12,251,924	11,958,301
Federal Home Loan Bank stock	41,716	41,769
Derivative assets	62,270	79,379
Interest receivable	92,055	97,664
Liabilities:
Deposits	14,361,346	14,811,957
Borrowings:
Federal funds purchased	30,000
Securities sold under repurchase agreements	124,894	157,265
Federal Home Loan Bank advances	841,458	707,377
Subordinated debentures and other borrowings	83,242	149,995
Deposits and other liabilities held for sale	266,898
Derivative liabilities	61,386	79,008
Interest payable	18,089	18,912
Quoted Prices in Active Markets for Identical Assets (Level 1)
Assets:
Cash and due from banks	84,719	112,649
Interest-bearing deposits	359,126	436,080
Investment securities available for sale	0	0
Investment securities held to maturity, net	0	0
Loans held for sale	0	0
Net loans	0	0
Federal Home Loan Bank stock	0	0
Derivative assets	0	0
Interest receivable	0	0
Liabilities:
Deposits	11,980,746	12,482,295
Borrowings:
Federal funds purchased	0
Securities sold under repurchase agreements	0	0
Federal Home Loan Bank advances	0	0
Subordinated debentures and other borrowings	0	0
Deposits and other liabilities held for sale	0
Derivative liabilities	0	0
Interest payable	0	0
Significant Other Observable Inputs (Level 2)
Assets:
Cash and due from banks	0	0
Interest-bearing deposits	0	0
Investment securities available for sale	1,551,015	1,623,802
Investment securities held to maturity, net	1,815,856	1,859,974
Loans held for sale	40,652	18,934
Net loans	0	0
Federal Home Loan Bank stock	41,716	41,769
Derivative assets	62,270	79,379
Interest receivable	92,055	97,664
Liabilities:
Deposits	2,380,600	2,329,662
Borrowings:
Federal funds purchased	30,000
Securities sold under repurchase agreements	124,894	157,265
Federal Home Loan Bank advances	841,458	707,377
Subordinated debentures and other borrowings	83,242	149,995
Deposits and other liabilities held for sale	266,898
Derivative liabilities	61,386	79,008
Interest payable	18,089	18,912
Significant Unobservable Inputs (Level 3)
Assets:
Cash and due from banks	0	0
Interest-bearing deposits	0	0
Investment securities available for sale	2,481	3,310
Investment securities held to maturity, net	7,150	10,400
Loans held for sale	0	0
Net loans	12,251,924	11,958,301
Federal Home Loan Bank stock	0	0
Derivative assets	0	0
Interest receivable	0	0
Liabilities:
Deposits	0	0
Borrowings:
Federal funds purchased	0
Securities sold under repurchase agreements	0	0
Federal Home Loan Bank advances	0	0
Subordinated debentures and other borrowings	0	0
Deposits and other liabilities held for sale	0
Derivative liabilities	0	0
Interest payable	0	0
Carrying Amount
Assets:
Cash and due from banks	84,719	112,649
Interest-bearing deposits	359,126	436,080
Investment securities available for sale	1,553,496	1,627,112
Investment securities held to maturity, net	2,108,649	2,184,252
Loans held for sale	40,652	18,934
Net loans	12,458,980	12,281,093
Federal Home Loan Bank stock	41,716	41,769
Derivative assets	62,270	79,379
Interest receivable	92,055	97,664
Liabilities:
Deposits	14,365,100	14,821,453
Borrowings:
Federal funds purchased	30,000
Securities sold under repurchase agreements	124,894	157,280
Federal Home Loan Bank advances	832,629	712,852
Subordinated debentures and other borrowings	93,562	158,644
Deposits and other liabilities held for sale	288,476
Derivative liabilities	61,386	79,008
Interest payable	$ 18,089	$ 18,912

QUALIFIED AFFORDABLE HOUSING _3

QUALIFIED AFFORDABLE HOUSING INVESTMENTS (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2023
Equity Method Investments and Joint Ventures [Abstract]
Investment	$ 149,830		$ 149,830		$ 114,514
Unfunded Commitment	114,756		114,756		$ 96,408
Amortization expense	1,695	$ 2,242	5,018	$ 4,080
Tax credits recognized	$ 1,644	$ 1,855	$ 4,933	$ 3,472

BORROWINGS - Summary of Borrowi

BORROWINGS - Summary of Borrowings (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Debt Disclosure [Abstract]
Federal funds purchased	$ 30,000	$ 0
Securities sold under repurchase agreements	124,894	157,280
Federal Home Loan Bank advances	832,629	712,852
Subordinated debentures and other borrowings	93,562	158,644
Total Borrowings	$ 1,081,085	$ 1,028,776

BORROWINGS - Narrative (Details

BORROWINGS - Narrative (Details)			9 Months Ended		12 Months Ended
	Dec. 18, 2024	Nov. 01, 2013 USD ($) investor	Sep. 30, 2024 USD ($)	Sep. 30, 2023 USD ($)	Dec. 31, 2023 USD ($)	Jun. 30, 2024 USD ($)	Mar. 31, 2024 USD ($)	Dec. 18, 2019 USD ($)
Debt Instrument [Line Items]
Total available remaining borrowing capacity from FHLB			$ 762,600,000
Federal Home Loan Bank advances			$ 832,629,000		$ 712,852,000
Debt face amount		$ 70,000,000
Private debt issuance, number of institutional investors | investor		4
5.00% Senior Notes Due 2028
Debt Instrument [Line Items]
Redemption price (percent)		100%
Senior Notes
Debt Instrument [Line Items]
Fixed interest rate term		10 years
U.S. Bank, N.A | Line of Credit
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)			2.25%
Outstanding balance on the line of credit			$ 0
Line of credit facility, maximum borrowing capacity			$ 75,000,000
Line of credit facility, commitment fee percentage			0.40%
Putable Advances
Debt Instrument [Line Items]
Federal Home Loan Bank advances			$ 305,000,000
Minimum
Debt Instrument [Line Items]
Interest rate, minimum (as a percent)			0.35%
Maximum
Debt Instrument [Line Items]
Interest rate, minimum (as a percent)			4.94%
Securities Sold Under Repurchase Agreements
Debt Instrument [Line Items]
Maximum amount of outstanding agreements			$ 194,200,000	$ 241,900,000
Total of average agreements			138,100,000	$ 181,200,000
Debt outstanding			124,894,000
Subordinated Debentures and Term Loans
Debt Instrument [Line Items]
Debt outstanding			93,562,000		158,600,000
Subordinated Debenture | 6.75% Subordinated Notes Due 2028
Debt Instrument [Line Items]
Debt face amount		$ 65,000,000
Interest rate on notes (as a percent)		6.75%
Redemption price (percent)		100%
Issued notice							$ 40,000,000
Subordinated Debenture | 6.75% Subordinated Notes Due 2028 | Notice of intent to redeem
Debt Instrument [Line Items]
Issued notice						$ 25,000,000
Subordinated Debenture | Level One Subordinated Notes
Debt Instrument [Line Items]
Debt face amount								$ 30,000,000
Interest rate on notes (as a percent)								4.75%
Subordinated Debenture | Level One Subordinated Notes | Forecast
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)	3.11%
Subordinated Debenture | First Merchant Capital Trust II
Debt Instrument [Line Items]
Debt face amount			$ 41,700,000		$ 41,700,000
Basis spread on variable rate (as a percent)			0.26161%
Interest rate during the period			6.77%		7.21%
Subordinated Debenture | Ameriana Capital Trust I
Debt Instrument [Line Items]
Debt face amount			$ 10,300,000		$ 10,300,000
Basis spread on variable rate (as a percent)			0.26161%
Interest rate during the period			6.71%		7.15%
Senior Notes | 5.00% Senior Notes Due 2028
Debt Instrument [Line Items]
Debt face amount		$ 5,000,000
Interest rate on notes (as a percent)		5%
Secured Debt
Debt Instrument [Line Items]
Debt outstanding			$ 7,200,000		$ 7,300,000
Interest rate on notes (as a percent)			3.41%		3.41%
Secured Debt | Level One
Debt Instrument [Line Items]
Debt outstanding			$ 1,200,000		$ 1,200,000
Interest rate on notes (as a percent)			1%		1%

BORROWINGS - Summary of Collate

BORROWINGS - Summary of Collateral Pledged for Repurchase Agreements (Details) - U.S. Government-sponsored mortgage-backed securities - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Assets Sold under Agreements to Repurchase [Line Items]
Remaining Contractual Maturity of the Agreements	$ 124,894	$ 157,280
Overnight and Continuous
Assets Sold under Agreements to Repurchase [Line Items]
Remaining Contractual Maturity of the Agreements	124,894	157,280
Up to 30 Days
Assets Sold under Agreements to Repurchase [Line Items]
Remaining Contractual Maturity of the Agreements	0	0
30-90 Days
Assets Sold under Agreements to Repurchase [Line Items]
Remaining Contractual Maturity of the Agreements	0	0
Greater Than 90 Days
Assets Sold under Agreements to Repurchase [Line Items]
Remaining Contractual Maturity of the Agreements	$ 0	$ 0

BORROWINGS - Summary of Contrac

BORROWINGS - Summary of Contractual Maturities of Borrowings (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Federal Funds Purchased
Maturities in Years Ending December 31:
2024	$ 30,000
2025	0
2026	0
2027	0
2028	0
2029 and after	0
ASC 805 fair value adjustments at acquisition	0
Debt outstanding	30,000
Securities Sold Under Repurchase Agreements
Maturities in Years Ending December 31:
2024	124,894
2025	0
2026	0
2027	0
2028	0
2029 and after	0
ASC 805 fair value adjustments at acquisition	0
Debt outstanding	124,894
Federal Home Loan Bank Advances
Maturities in Years Ending December 31:
2024	10,000
2025	95,000
2026	75,000
2027	250,000
2028	190,000
2029 and after	212,629
ASC 805 fair value adjustments at acquisition	0
Debt outstanding	832,629
Subordinated Debentures and Term Loans
Maturities in Years Ending December 31:
2024	1,164
2025	0
2026	0
2027	0
2028	5,000
2029 and after	90,846
ASC 805 fair value adjustments at acquisition	(3,448)
Debt outstanding	$ 93,562	$ 158,600

ACCUMULATED OTHER COMPREHENSI_3

ACCUMULATED OTHER COMPREHENSIVE LOSS - Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Accumulated Other Comprehensive Loss
Beginning balance	$ 2,212,525	$ 2,145,565	$ 2,247,713	$ 2,034,770
Other comprehensive income before reclassifications			16,905	(71,775)
Amounts reclassified from accumulated other comprehensive loss			7,240	3,656
Period change	60,154	(89,306)	24,145	(68,119)
Ending balance	2,302,373	2,092,644	2,302,373	2,092,644
Total
Accumulated Other Comprehensive Loss
Beginning balance	(211,979)	(217,964)	(175,970)	(239,151)
Period change	60,154	(89,306)	24,145	(68,119)
Ending balance	(151,825)	(307,270)	(151,825)	(307,270)
Unrealized Gains (Losses) on Securities Available for Sale
Accumulated Other Comprehensive Loss
Beginning balance			(173,654)	(234,495)
Other comprehensive income before reclassifications			16,905	(71,633)
Amounts reclassified from accumulated other comprehensive loss			7,240	3,644
Period change			24,145	(67,989)
Ending balance	(149,509)	(302,484)	(149,509)	(302,484)
Unrealized Gains (Losses) on Cash Flow Hedges
Accumulated Other Comprehensive Loss
Beginning balance			0	130
Other comprehensive income before reclassifications			0	(142)
Amounts reclassified from accumulated other comprehensive loss			0	12
Period change			0	(130)
Ending balance	0	0	0	0
Unrealized Gains (Losses) on Defined Benefit Plans
Accumulated Other Comprehensive Loss
Beginning balance			(2,316)	(4,786)
Other comprehensive income before reclassifications			0	0
Amounts reclassified from accumulated other comprehensive loss			0	0
Period change			0	0
Ending balance	$ (2,316)	$ (4,786)	$ (2,316)	$ (4,786)

ACCUMULATED OTHER COMPREHENSI_4

ACCUMULATED OTHER COMPREHENSIVE LOSS - Reclassification out of Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Reclassification Adjustments out of Accumulated Other Comprehensive Income [Line Items]
Other income - net realized gains (losses) on sales of available for sale securities	$ (9,114)	$ (1,650)	$ (9,165)	$ (4,613)
Income tax expense	(7,160)	(9,005)	(18,052)	(31,021)
Total reclassifications for the period, net of tax	49,187	56,366	137,053	181,307
Amount Reclassified from Accumulated Other Comprehensive Income (Loss)
Reclassification Adjustments out of Accumulated Other Comprehensive Income [Line Items]
Total reclassifications for the period, net of tax	(7,200)	(1,304)	(7,240)	(3,656)
Amount Reclassified from Accumulated Other Comprehensive Income (Loss) | Unrealized gains (losses) on available for sale securities
Reclassification Adjustments out of Accumulated Other Comprehensive Income [Line Items]
Other income - net realized gains (losses) on sales of available for sale securities	(9,114)	(1,650)	(9,165)	(4,613)
Income tax expense	1,914	346	1,925	969
Total reclassifications for the period, net of tax	(7,200)	(1,304)	(7,240)	(3,644)
Amount Reclassified from Accumulated Other Comprehensive Income (Loss) | Unrealized gains (losses) on cash flow hedges
Reclassification Adjustments out of Accumulated Other Comprehensive Income [Line Items]
Income tax expense	0	0	0	3
Total reclassifications for the period, net of tax	0	0	0	(12)
Amount Reclassified from Accumulated Other Comprehensive Income (Loss) | Unrealized gains (losses) on cash flow hedges | Interest rate contracts
Reclassification Adjustments out of Accumulated Other Comprehensive Income [Line Items]
Interest expense - subordinated debentures and term loans	$ 0	$ 0	$ 0	$ (15)

SHARE-BASED COMPENSATION - Narr

SHARE-BASED COMPENSATION - Narrative (Details) - USD ($)		9 Months Ended
	Jul. 01, 2024	Sep. 30, 2024	Sep. 30, 2023
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Forfeiture rate		0.05%
Aggregate intrinsic value of stock options exercised		$ 707,000	$ 1,400,000
Cash receipts of stock options exercised		$ 900,000	$ 1,110,000
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock option term		10 years
Stock options vesting percentage		100%
Unrecognized compensation expense related to stock options		$ 0
Stock Options | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vested period		1 year
Stock Options | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vested period		2 years
RSAs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vested period		3 years
Unrecognized compensation expense related to RSAs		$ 11,900,000
Unrecognized compensation expense expected recognition period		1 year 10 months 24 days
ESPP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of average closing price to be paid by employees		85%
Maximum common stock purchases through advance payroll deductions in a calendar year		$ 25,000
Grant date fair value	$ 28,000
Unrecognized compensation expense related to stock options		$ 0

SHARE-BASED COMPENSATION - Comp

SHARE-BASED COMPENSATION - Components of Awards (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Pre-tax compensation expense	$ 1,437	$ 1,360	$ 4,191	$ 3,792
Income tax expense (benefit)	(204)	(393)	(767)	(968)
Total share-based compensation expense, net of income taxes	1,233	967	3,424	2,824
Stock and ESPP Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Pre-tax compensation expense	28	35	130	80
Income tax expense (benefit)	0	0	(40)	(62)
Total share-based compensation expense, net of income taxes	28	35	90	18
Restricted Stock Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Pre-tax compensation expense	1,409	1,325	4,061	3,712
Income tax expense (benefit)	(204)	(393)	(727)	(906)
Total share-based compensation expense, net of income taxes	$ 1,205	$ 932	$ 3,334	$ 2,806

SHARE-BASED COMPENSATION - Stoc

SHARE-BASED COMPENSATION - Stock Option Activity (Details) - USD ($)	9 Months Ended
	Sep. 30, 2024
Number of Shares
Beginning balance (in shares)	90,075
Exercised (in shares)	(49,084)
Ending balance (in shares)	40,991
Vested and expected to vest, number of shares (in shares)	40,991
Exercisable, number of shares (in shares)	40,991
Weighted-Average Exercise Price
Beginning balance (in dollars per share)	$ 20.21
Exercised (in dollars per share)	18.34
Ending balance (in dollars per share)	22.44
Vested and expected to vest, weighted-average exercise price (in dollars per share)	22.44
Exercisable, weighted-average exercise price (in dollars per share)	$ 22.44
Weighted Average Remaining Contractual Term (in Years)
Outstanding	1 year 11 months 8 days
Vested and expected to vest	1 year 11 months 8 days
Exercisable	1 year 11 months 8 days
Aggregate Intrinsic Value
Outstanding	$ 605,000
Vested and expected to vest	605,000
Exercisable	$ 605,000

SHARE-BASED COMPENSATION - Unve

SHARE-BASED COMPENSATION - Unvested RSAs Outstanding (Details) - RSAs	9 Months Ended
	Sep. 30, 2024 $ / shares shares
Number of Shares
Unvested RSAs, Beginning balance (in shares) | shares	452,426
Granted (in shares) | shares	192,663
Vested (in shares) | shares	(83,356)
Forfeited (in shares) | shares	(6,225)
Unvested RSAs, Ending balance (in shares) | shares	555,508
Weighted-Average Grant Date Fair Value
Unvested RSAs, Beginning balance (in dollars per share) | $ / shares	$ 37.94
Granted (in dollars per share) | $ / shares	35.93
Vested (in dollars per share) | $ / shares	42.84
Forfeited (in dollars per share) | $ / shares	39.63
Unvested RSAs, Ending balance (in dollars per share) | $ / shares	$ 36.49

INCOME TAX (Details)

INCOME TAX (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Reconciliation of Federal Statutory to Actual Tax Expense:
Federal statutory income tax at 21%	$ 11,833	$ 13,728	$ 32,572	$ 44,589
Tax-exempt interest income	(4,409)	(4,469)	(13,157)	(13,792)
Non-deductible FDIC premiums	180	126	462	299
Share-based compensation	98	(108)	113	(172)
Tax-exempt earnings and gains on life insurance	(579)	(369)	(1,318)	(1,080)
Tax credits	(305)	(84)	(969)	(249)
State Income Tax	333	254	142	1,474
Other	9	(73)	207	(48)
Actual Tax Expense	$ 7,160	$ 9,005	$ 18,052	$ 31,021
Effective Tax Rate	12.70%	13.80%	11.60%	14.60%

NET INCOME PER COMMON SHARE (De

NET INCOME PER COMMON SHARE (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Net Income Available to Common Stockholders
Net income available to common stockholders	$ 48,719	$ 55,898	$ 135,647	$ 179,901
Diluted net income per common share	$ 48,719	$ 55,898	$ 135,647	$ 179,901
Weighted-Average Common Shares
Net income available to common stockholders (in shares)	58,074,361	59,335,877	58,413,814	59,272,401
Effect of potentially dilutive stock options and restricted stock awards (in shares)	215,128	166,648	215,185	192,997
Diluted net income per common share (in shares)	58,289,489	59,502,525	58,628,999	59,465,398
RSAs excluded from the diluted average common share calculation (in shares)	94,650	155,653	122,134	64,646
Per Share Amount
Net income available to common stockholders (in dollars per share)	$ 0.84	$ 0.95	$ 2.32	$ 3.04
Diluted net income per common share (in dollars per share)	$ 0.84	$ 0.94	$ 2.31	$ 3.03