First Merchants (FRME) 10-Q 3 May 23 2023 Q1 Quarterly report Financial data

Cover Page

Cover Page - shares	3 Months Ended
	Mar. 31, 2023	Apr. 28, 2023
Entity Information [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Mar. 31, 2023
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		59,681,095
Entity Central Index Key	0000712534
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2023
Document Fiscal Period Focus	Q1
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	Mar. 31, 2023	Dec. 31, 2022
ASSETS
Cash and due from banks	$ 125,818	$ 122,594
Interest-bearing deposits	352,695	126,061
Investment securities available for sale	1,794,208	1,976,661
Investment securities held to maturity, net of allowance for credit losses of $245 and $245 (fair value of $1,934,601 and $1,907,865)	2,263,181	2,287,127
Loans held for sale	9,408	9,094
Loans	12,241,461	12,003,894
Less: Allowance for credit losses - loans	(223,052)	(223,277)
Net loans	12,018,409	11,780,617
Premises and equipment	115,857	117,118
Federal Home Loan Bank stock	41,878	38,525
Interest receivable	85,515	85,070
Goodwill	712,002	712,002
Other intangibles	33,645	35,842
Cash surrender value of life insurance	309,090	308,311
Other real estate owned	7,777	6,431
Tax asset, deferred and receivable	103,070	111,222
Other assets	206,355	221,631
TOTAL ASSETS	18,178,908	17,938,306
Deposits:
Noninterest-bearing	2,964,355	3,173,417
Interest-bearing	11,738,932	11,209,328
Total Deposits	14,703,287	14,382,745
Borrowings:
Federal funds purchased	20	171,560
Securities sold under repurchase agreements	179,067	167,413
Federal Home Loan Bank advances	823,577	823,674
Subordinated debentures and other borrowings	151,312	151,298
Total Borrowings	1,153,976	1,313,945
Interest payable	11,979	7,530
Other liabilities	187,218	199,316
Total Liabilities	16,056,460	15,903,536
COMMITMENTS AND CONTINGENT LIABILITIES
STOCKHOLDERS' EQUITY
Common stock value	7,407	7,396
Additional paid-in capital	1,231,532	1,228,626
Retained earnings	1,057,298	1,012,774
Accumulated other comprehensive loss	(198,914)	(239,151)
Total Stockholders' Equity	2,122,448	2,034,770
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	18,178,908	17,938,306
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	Mar. 31, 2023	Dec. 31, 2022
Allowance for credit losses	$ 245	$ 245
Investment securities held to maturity - fair value	$ 1,934,601	$ 1,907,865
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)	59,257,051	59,170,583
Common Stock, outstanding (in shares)	59,257,051	59,170,583
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 (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Loans receivable:
Taxable	$ 172,353	$ 79,075
Tax exempt	7,709	5,704
Investment securities:
Taxable	9,087	8,510
Tax exempt	16,070	15,875
Deposits with financial institutions	637	230
Federal Home Loan Bank stock	542	146
Total Interest Income	206,398	109,540
INTEREST EXPENSE
Deposits	50,685	4,294
Federal funds purchased	1,297	0
Securities sold under repurchase agreements	848	89
Federal Home Loan Bank advances	7,064	1,218
Subordinated debentures and other borrowings	2,385	1,659
Total Interest Expense	62,279	7,260
NET INTEREST INCOME	144,119	102,280
Provision for credit losses	0	0
NET INTEREST INCOME AFTER PROVISION FOR CREDIT LOSSES	144,119	102,280
NON-INTEREST INCOME
Net gains and fees on sales of loans	2,399	2,199
Increase in cash surrender value of life insurance	1,287	1,176
Gains on life insurance benefits	1	520
Net realized gains (losses) on sales of available for sale securities	(1,571)	566
Other income	823	634
Total Non-Interest Income	24,997	25,897
NON-INTEREST EXPENSES
Salaries and employee benefits	57,459	42,519
Net occupancy	7,259	6,187
Equipment	6,126	5,080
Marketing	1,309	736
Outside data processing fees	6,113	4,363
Printing and office supplies	383	345
Intangible asset amortization	2,197	1,366
FDIC assessments	1,396	2,192
Other real estate owned and foreclosure expenses	(18)	564
Professional and other outside services	3,698	2,953
Other expenses	7,798	6,020
Total Non-Interest Expenses	93,720	72,325
INCOME BEFORE INCOME TAX	75,396	55,852
Income tax expense	11,317	7,266
NET INCOME	64,079	48,586
Preferred stock dividends	469	0
NET INCOME AVAILABLE TO COMMON STOCKHOLDERS	$ 63,610	$ 48,586
Per Share Data:
Basic Net Income Available to Common Stockholders (in dollars per share)	$ 1.07	$ 0.91
Diluted Net Income Available to Common Stockholders (in dollars per share)	1.07	0.91
Cash Dividends Paid (in dollars per share)	$ 0.32	$ 0.29
Average Diluted Common Shares Outstanding (in shares)	59,440,728	53,615,868
Service charges on deposit accounts
NON-INTEREST INCOME
Other income	$ 7,359	$ 6,419
Fiduciary and wealth management fees
NON-INTEREST INCOME
Other income	7,862	7,332
Card payment fees
NON-INTEREST INCOME
Other income	5,172	5,723
Derivative hedge fees
NON-INTEREST INCOME
Other income	1,148	918
Other customer fees
NON-INTEREST INCOME
Other income	$ 517	$ 410

CONSOLIDATED CONDENSED STATEM_2

CONSOLIDATED CONDENSED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Statement of Comprehensive Income [Abstract]
Net income	$ 64,079	$ 48,586
Unrealized gains/(losses) on securities available-for-sale:
Unrealized holding gain/(loss) arising during the period	49,415	(176,567)
Reclassification adjustment for losses/(gains) included in net income	1,571	(566)
Tax effect	(10,707)	37,199
Net of tax	40,279	(139,934)
Unrealized gain/(loss) on cash flow hedges:
Unrealized holding gain/(loss) arising during the period	(51)	303
Reclassification adjustment for losses/(gains) included in net income	(1)	241
Tax effect	10	(115)
Net of tax	(42)	429
Total other comprehensive income/(loss), net of tax	40,237	(139,505)
Comprehensive income/(loss)	$ 104,316	$ (90,919)

CONSOLIDATED CONDENSED STATEM_3

CONSOLIDATED CONDENSED STATEMENTS OF STOCKHOLDERS' EQUITY (Unaudited) - USD ($) $ in Thousands	Total	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, 2021		125		53,410,411
Beginning balance at Dec. 31, 2021	$ 1,912,571	$ 125		$ 6,676	$ 985,818	$ 864,839	$ 55,113
Comprehensive income:
Net income	48,586					48,586
Other comprehensive (loss) income, net of tax	(139,505)						(139,505)
Cash dividends on common stock	(15,607)					(15,607)
Share-based compensation (in shares)				1,200
Share-based compensation	1,100				1,100
Stock issued under dividend reinvestment and stock purchase plan (in shares)				10,639
Stock issued under dividend reinvestment and stock purchase plan	471			$ 2	469
Stock options exercised (in shares)				3,000
Stock options exercised	37				37
Restricted shares withheld for taxes (in shares)				(427)
Restricted shares withheld for taxes	(20)				(20)
Ending balance (in shares) at Mar. 31, 2022		125		53,424,823
Ending balance at Mar. 31, 2022	1,807,633	$ 125		$ 6,678	987,404	897,818	(84,392)
Beginning balance (in shares) at Dec. 31, 2022		125	10,000	59,170,583
Beginning balance at Dec. 31, 2022	2,034,770	$ 125	$ 25,000	$ 7,396	1,228,626	1,012,774	(239,151)
Comprehensive income:
Net income	64,079					64,079
Other comprehensive (loss) income, net of tax	40,237						40,237
Cash dividends on preferred stock	(469)					(469)
Cash dividends on common stock	(19,086)					(19,086)
Share-based compensation (in shares)				7,573
Share-based compensation	1,197			$ 1	1,196
Stock issued under employee benefit plans (in shares)				5,900
Stock issued under employee benefit plans	199			$ 1	198
Stock issued under dividend reinvestment and stock purchase plan (in shares)				14,464
Stock issued under dividend reinvestment and stock purchase plan	$ 514			$ 2	512
Stock options exercised (in shares)	58,620			58,620
Stock options exercised	$ 1,010			$ 7	1,003
Restricted shares withheld for taxes (in shares)				(89)
Restricted shares withheld for taxes	(3)				(3)
Ending balance (in shares) at Mar. 31, 2023		125	10,000	59,257,051
Ending balance at Mar. 31, 2023	$ 2,122,448	$ 125	$ 25,000	$ 7,407	$ 1,231,532	$ 1,057,298	$ (198,914)

CONSOLIDATED CONDENSED STATEM_4

CONSOLIDATED CONDENSED STATEMENTS OF STOCKHOLDERS’ EQUITY (Unaudited) (Parenthetical)	3 Months Ended
	Mar. 31, 2023 $ / shares
Statement of Stockholders' Equity [Abstract]
Cash dividends on preferred stock (in dollars per share)	$ 46.88
Cash dividends on common stock (in dollars per share)	$ 0.32

CONSOLIDATED CONDENSED STATEM_5

CONSOLIDATED CONDENSED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Cash Flow From Operating Activities:
Net income	$ 64,079	$ 48,586
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	2,964	2,668
Change in deferred taxes	(3,395)	(1,665)
Share-based compensation	1,197	1,100
Loans originated for sale	(74,212)	(63,805)
Proceeds from sales of loans held for sale	74,746	72,456
Gains on sales of loans held for sale	(848)	(1,402)
Net (gains) losses on sales of securities available for sale	1,571	(566)
Increase in cash surrender value of life insurance	(1,287)	(1,176)
Gains on life insurance benefits	(1)	(520)
Change in interest receivable	(445)	1,106
Change in interest payable	4,449	827
Other adjustments	9,039	(7,388)
Net cash provided by operating activities	77,857	50,221
Cash Flows from Investing Activities:
Net change in interest-bearing deposits	(226,634)	78,892
Purchases of:
Securities available for sale	(1,400)	(62,164)
Securities held to maturity	0	(206,523)
Proceeds from sales of securities available for sale	213,232	35,029
Proceeds from maturities of:
Securities available for sale	17,814	37,442
Securities held to maturity	22,987	42,834
Change in Federal Home Loan Bank stock	(3,353)	2,314
Net change in loans	(238,872)	(116,409)
Proceeds from the sale of other real estate owned	46	174
Proceeds from life insurance benefits	509	856
Other adjustments	(1,703)	(2,896)
Net cash used in investing activities	(217,374)	(190,451)
Net change in :
Demand and savings deposits	(184,063)	211,458
Certificates of deposit and other time deposits	504,605	(38,082)
Borrowings	486,714	59
Repayment of borrowings	(646,683)	(36,975)
Cash dividends on preferred stock	(469)	0
Cash dividends on common stock	(19,086)	(15,607)
Stock issued under employee benefit plans	199	0
Stock issued under dividend reinvestment and stock purchase plans	514	471
Stock options exercised	1,010	37
Net cash provided by financing activities	142,741	121,361
Net Change in Cash and Cash Equivalents	3,224	(18,869)
Cash and Cash Equivalents, January 1	122,594	167,146
Cash and Cash Equivalents, March 31	125,818	148,277
Additional cash flow information:
Interest paid	57,830	6,433
Income tax paid (refunded)	(1,118)	7,750
Loans transferred to other real estate owned	1,080	5,868
Non-cash investing activities using trade date accounting	0	5,246
ROU assets obtained in exchange for new operating lease liabilities	646	53
Payments for (Proceeds from) Loans Receivable	$ 238,872	$ 116,409

GENERAL

GENERAL	3 Months Ended
	Mar. 31, 2023
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, 2022, 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, 2022 filed with the Securities and Exchange Commission. The results of operations for the three months ended March 31, 2023, are not necessarily indicative of the results to be expected for the year. Reclassifications have been made to prior financial statements to conform to the current financial statement presentation. These reclassifications had no effect on net income. 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 2023 FASB Accounting Standards Updates - No. 2021-08 - Business Combinations (Topic 805) - Accounting for Contract Assets and Contract Liabilities from Contracts with Customers Summary - The FASB issued ASU No. 2021-08, Business Combinations (Topic 805): Accounting for Contract Assets and Contract Liabilities from Contracts with Customers , that addressed diversity in practice related to the accounting for revenue contracts with customers acquired in a business combination. Under current GAAP, an acquirer generally recognized assets acquired and liabilities assumed in a business combination, including contract assets and contract liabilities arising from revenue contracts with customers and other similar contracts that are accounted for in accordance with Topic 606 , Revenue from Contracts with Customers , at fair value on the acquisition date. The FASB indicated that some stakeholders indicated that it is unclear how an acquirer should evaluate whether to recognize a contract liability from a revenue contract with a customer acquired in a business combination after Topic 606 was adopted. Furthermore, it was identified that under current practice, the timing of payment (payment terms) of a revenue contract may subsequently affect the post-acquisition revenue recognized by the acquirer. To address this, the ASU required entities to apply Topic 606 to recognize and measure contract assets and contract liabilities in a business combination. Finally, the amendments in the ASU improve comparability after the business combination by providing consistent recognition and measurement guidance for revenue contracts with customers acquired in a business combination and revenue contracts with customers not acquired in a business combination. For public business entities, the amendments were effective for fiscal years beginning after December 31, 2022, including interim periods within those fiscal years. For all other entities, the amendments are effective for fiscal years beginning after December 31, 2023, including interim periods within those fiscal years. The amendments in this Update are applied prospectively to business combinations occurring on or after the effective date of the amendments. Early adoption of the amendments was permitted, including adoption in an interim period. An entity that early adopted in an interim period applied the amendments (1) retrospectively to all business combinations for which the acquisition date occurred on or after the beginning of the fiscal year that included the interim period or early application, and (2) prospectively to all business combinations that occurred on or after the date of initial application. The Corporation adopted this guidance on January 1, 2023, but adoption of the standard did not have any impact on the Corporation's financial statements or disclosures. FASB Accounting Standards Updates - No. 2022-02 - Financial Instruments - Credit Losses (Topic 326): Troubled Debt Restructurings and Vintage Disclosures Summary - The FASB issued ASU No. 2022-02, Financial Instruments—Credit Losses (Topic 326): Troubled Debt Restructurings and Vintage Disclosures , to improve the usefulness of information provided to investors about certain loan refinancings, restructurings, and writeoffs. Troubled Debt Restructurings ("TDR") by Creditors That Have Adopted CECL During the FASB’s post-implementation review of the credit losses standard, including a May 2021 roundtable, investors and other stakeholders questioned the relevance of the TDR designation and the usefulness of disclosures about those modifications. Some noted that measurement of expected losses under the CECL model already incorporated losses realized from restructurings that are TDRs and that relevant information for investors would be better conveyed through enhanced disclosures about certain modifications. The amendments in the new ASU eliminate the accounting guidance for TDRs by creditors that have adopted CECL while enhancing disclosure requirements for certain loan refinancings and restructurings by creditors made to borrowers experiencing financial difficulty. Vintage Disclosures - Gross Writeoffs The disclosure of gross writeoff information by year of origination was cited by numerous investors as an essential input to their analysis. To address this feedback, the amendments in the new ASU require that a public business entity disclose current-period gross writeoffs by year of origination for financing receivables and net investment in leases. For entities that have adopted the amendments in ASU 2016-13, the amendments in this Update were effective for fiscal years beginning after December 15, 2022, including interim periods within those fiscal years. The Corporation adopted this Update on January 1, 2023 and the new disclosures required in this Update are included in NOTE 4. LOANS AND ALLOWANCE of these Notes to Consolidated Condensed Financial Statements. 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. 2020-04 - Reference Rate Reform (Topic 848): Facilitation of the Effects of Reference Rate Reform on Financial Reporting Summary - The FASB issued ASU No. 2020-04 to provide temporary optional guidance to ease the potential burden in accounting for reference rate reform. LIBOR and other interbank offered rates are widely used benchmarks or reference rates in the United States and globally. Trillions of dollars in loans, derivatives, and other financial contracts reference LIBOR, the benchmark interest rate banks use to make short-term loans to each other. With global capital markets expected to move away from LIBOR and other interbank offered rates and move toward rates that are more observable or transaction based and less susceptible to manipulation, the FASB launched a broad project in late 2018 to address potential accounting challenges expected to arise from the transition. The new guidance provides optional expedients and exceptions for applying generally accepted accounting principles to contract modifications and hedging relationships, subject to meeting certain criteria, that reference LIBOR or another reference rate expected to be discontinued. The ASU is intended to help stakeholders during the global market-wide reference rate transition period. Originally, an entity could apply this ASU as of the beginning of an interim period that includes the March 12, 2020 issuance date of the ASU, through December 31, 2022. With the issuance of ASU 2022-06 - Reference Rate Reform (Topic 848): Deferral of the Sunset Date of Topic 848 , the sunset date for adoption of ASU 2020-04 was extended from December 31, 2022 to December 31, 2024. The Corporation expects to adopt the practical expedients included in this ASU in 2023 as it transitions its loans and other financial instruments to another reference rate. FASB Accounting Standards Updates - No. 2021-01 - Reference Rate Reform (Topic 848): Scope Summary - The FASB has published ASU 2021-01, Reference Rate Reform. ASU 2021-01 clarifies that certain optional expedients and exceptions in Topic 848 for contract modifications and hedge accounting apply to derivatives that are affected by the discounting transition. The ASU also amends the expedients and exceptions in Topic 848 to capture the incremental consequences of the scope clarification and to tailor the existing guidance to derivative instruments affected by the discounting transition. An entity may elect to apply the amendments in this Update on a full retrospective basis as of any date from the beginning of an interim period that includes or is subsequent to March 12, 2020, or on a prospective basis to new modifications from any date within an interim period that includes or is subsequent to the date of the issuance of a final Update, up to the date that financial statements are available to be issued. If an entity elects to apply any of the amendments in this Update for an eligible hedging relationship, any adjustments as a result of those elections must be reflected as of the date the entity applies the election. Originally, the amendments in this Update did not apply to contract modifications made after December 31, 2022, new hedging relationships entered into after December 31, 2022, and existing hedging relationships evaluated for effectiveness in periods after December 31, 2022, except for hedging relationships existing as of December 31, 2022, that apply certain optional expedients in which the accounting effects are recorded through the end of the hedging relationship (including periods after December 31, 2022). With the issuance of ASU 2022-06 - Reference Rate Reform (Topic 848): Deferral of the Sunset Date of Topic 848 , the sunset date for adoption of ASU 2021-01 was extended from December 31, 2022 to December 31, 2024. The Corporation expects to adopt the practical expedients included in this ASU in 2023 as it transitions its loans and other financial instruments to another reference rate. 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 , that 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 are effective for fiscal years beginning after December 15, 2023, including interim periods within those fiscal years. For all other entities, the amendments are 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 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

ACQUISITIONS	3 Months Ended
	Mar. 31, 2023
Business Combination and Asset Acquisition [Abstract]
ACQUISITIONS	ACQUISITIONS Level One Bancorp, Inc. On April 1, 2022, the Corporation acquired 100 percent of Level One Bancorp, Inc. ("Level One"). Level One, a Michigan corporation, merged with and into the Corporation (the "Merger"), whereupon the separate corporate existence of Level One ceased and the Corporation survived. Immediately following the Merger, Level One's wholly owned subsidiary, Level One Bank, merged with and into the Bank, with the Bank as the surviving bank. Level One was headquartered in Farmington Hills, Michigan and had 17 banking centers serving the Michigan market. Pursuant to the merger agreement, each common shareholder of Level One received, for each outstanding share of Level One common stock held, (a) a 0.7167 share of the Corporation's common stock, and (b) a cash payment of $10.17. The Corporation issued 5.6 million shares of the Corporation's common stock and paid $79.3 million in cash, in exchange for all outstanding shares of Level One common stock. Additionally, the Corporation issued 10,000 shares of newly created 7.5 percent non-cumulative perpetual preferred stock, with a liquidation preference of $2,500 per share, in exchange for the outstanding Level One Series B preferred stock. Likewise, each outstanding Level One depositary share representing a 1/100th interest in a share of the Level One Series B preferred stock was converted into a depositary share of the Corporation representing a 1/100th interest in a share of its newly issued preferred stock (Nasdaq: FRMEP). The Corporation engaged in this transaction with the expectation that it would be accretive to income and add to the existing market area in Michigan that has a demographic profile consistent with many of the current Midwest markets served by the Bank. Goodwill resulted from this transaction due to the expected synergies and economies of scale. Under the acquisition method of accounting, the total purchase price is allocated to net tangible and intangible assets based on their current estimated fair values on the date of the acquisition. Based on valuations of the fair value of tangible and intangible assets acquired and liabilities assumed, which are based on assumptions that are subject to change based on the timing of the transaction, the purchase price for the Level One acquisition is detailed in the following table. Fair Value Cash and due from banks $ 217,104 Investment securities available for sale 370,071 Investment securities held to maturity 587 Loans held for sale 7,951 Loans 1,627,423 Allowance for credit losses - loans (16,599) Premises and equipment 11,848 Federal Home Loan Bank stock 11,688 Interest receivable 7,188 Cash surrender value of life insurance 30,143 Tax asset, deferred and receivable 16,223 Other assets 41,690 Deposits (1,930,790) Securities sold under repurchase agreements (1,521) Federal Home Loan Bank advances (160,043) Subordinated debentures (32,631) Interest payable (1,065) Other liabilities (42,813) Net tangible assets acquired 156,454 Other intangibles 18,642 Goodwill 166,617 Purchase price $ 341,713 The Corporation performed an evaluation of the loan portfolio in which there were loans that, at acquisition, had more than an insignificant amount of credit quality deterioration and were classified as purchased credit deteriorated ("PCD"). Details of the PCD loans are included in NOTE 4. LOANS AND ALLOWANCE of these Notes to Consolidated Condensed Financial Statements. Of the total purchase price, $18.6 million has been allocated to other intangible assets. Approximately $17.2 million was allocated to a core deposit intangible, which will be amortized over its estimated life of 10 years. Approximately $1.4 million was allocated to a non-compete intangible, which will be amortized over its estimated life of 2 years. The remaining purchase price has been allocated to goodwill, which is not deductible for tax purposes. Pro Forma Financial Information The results of operations of Level One have been included in the Corporation's consolidated financial statements since the acquisition date. The following schedule includes pro forma results for the year ended December 31, 2022 as if the Level One acquisition occurred as of the beginning of the period presented. 2022 Total revenue (net interest income plus other income) $ 654,313 Net income $ 221,631 Net income available to common stockholders $ 219,756 Earnings per common share: Basic $ 3.72 Diluted $ 3.70 The pro forma information includes adjustments for interest income on loans and investment securities, interest expense on deposits and borrowings, premises expense for the banking centers acquired and amortization of intangibles arising from the transaction and the related income tax effects. The pro forma information includes operating revenue of $56.9 million from Level One since the date of acquisition, $16.8 million of provision expense related to CECL Day 1 adjustments for PCD loans, and $16.5 million of acquisition-related expenses. The pro forma information is presented for information purposes only and is not indicative of the results of operations that actually would have been achieved had the acquisition been consummated as of January 1, 2022, nor is it intended to be a projection of future results.

INVESTMENT SECURITIES

INVESTMENT SECURITIES	3 Months Ended
	Mar. 31, 2023
Investments, Debt and Equity Securities [Abstract]
INVESTMENT SECURITIES	INVESTMENT SECURITIES The following table summarizes the amortized cost, gross unrealized gains and losses and approximate fair value of investment securities available for sale as of March 31, 2023 and December 31, 2022. Amortized Gross Unrealized Gross Unrealized Fair Available for sale at March 31, 2023 U.S. Treasury $ 2,114 $ — $ 32 $ 2,082 U.S. Government-sponsored agency securities 117,746 5 15,153 102,598 State and municipal 1,322,500 562 139,326 1,183,736 U.S. Government-sponsored mortgage-backed securities 584,576 — 90,971 493,605 Corporate obligations 12,991 — 804 12,187 Total available for sale $ 2,039,927 $ 567 $ 246,286 $ 1,794,208 Amortized Gross Unrealized Gross Unrealized Fair Available for sale at December 31, 2022 U.S. Treasury $ 2,501 $ — $ 42 $ 2,459 U.S. Government-sponsored agency securities 119,154 — 17,192 101,962 State and municipal 1,530,048 438 178,726 1,351,760 U.S. Government-sponsored mortgage-backed securities 608,630 1 100,358 508,273 Corporate obligations 13,014 — 807 12,207 Total available for sale $ 2,273,347 $ 439 $ 297,125 $ 1,976,661 The following table summarizes the amortized cost, gross unrealized gains and losses, approximate fair value and allowance for credit losses on investment securities held to maturity as of March 31, 2023 and December 31, 2022. Amortized Allowance for Credit Losses Net Carrying Amount Gross Unrealized Gross Unrealized Fair Held to maturity at March 31, 2023 U.S. Government-sponsored agency securities $ 388,273 $ — $ 388,273 $ — $ 61,813 $ 326,460 State and municipal 1,114,874 245 1,114,629 1,778 166,679 949,973 U.S. Government-sponsored mortgage-backed securities 758,779 — 758,779 — 102,068 656,711 Foreign investment 1,500 — 1,500 — 43 1,457 Total held to maturity $ 2,263,426 $ 245 $ 2,263,181 $ 1,778 $ 330,603 $ 1,934,601 Amortized Allowance for Credit Losses Net Carrying Amount Gross Unrealized Gross Unrealized Fair Held to maturity at December 31, 2022 U.S. Government-sponsored agency securities $ 392,246 $ — $ 392,246 $ — $ 69,147 $ 323,099 State and municipal 1,117,552 245 1,117,307 647 197,064 921,135 U.S. Government-sponsored mortgage-backed securities 776,074 — 776,074 — 113,915 662,159 Foreign investment 1,500 — 1,500 — 28 1,472 Total held to maturity $ 2,287,372 $ 245 $ 2,287,127 $ 647 $ 380,154 $ 1,907,865 Accrued interest on investment securities available for sale and held to maturity at March 31, 2023 and December 31, 2022 of $24.6 million and $29.5 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 income. Adjustments to the allowance are reported in the income statement as a component of the provision for credit loss. 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 loss. 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 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 March 31, 2023, there were no past due principal and interest payments associated with these securities. At CECL adoption, an allowance for credit losses of $245,000 was recorded on the state and municipal securities classified as held to maturity based on applying the long-term historical credit loss rate, as published by Moody’s, for similarly rated securities. The balance of the allowance for credit losses remained unchanged at $245,000 as of March 31, 2023. 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 March 31, 2023, aggregated by credit quality indicator. Held to Maturity State and municipal Other Total Credit Rating: Aaa $ 108,774 $ 70,583 $ 179,357 Aa1 156,209 — 156,209 Aa2 183,736 — 183,736 Aa3 135,167 — 135,167 A1 131,421 — 131,421 A2 10,170 — 10,170 A3 10,120 — 10,120 Non-rated 379,277 1,077,969 1,457,246 Total $ 1,114,874 $ 1,148,552 $ 2,263,426 The following tables summarize, as of March 31, 2023 and December 31, 2022, 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 March 31, 2023 U.S. Treasury $ 737 $ 8 $ 957 $ 24 $ 1,694 $ 32 U.S. Government-sponsored agency securities 36,595 2,204 65,197 12,949 101,792 15,153 State and municipal 290,254 13,634 823,441 125,692 1,113,695 139,326 U.S. Government-sponsored mortgage-backed securities 54,013 2,801 439,588 88,170 493,601 90,971 Corporate obligations 11,253 708 904 96 12,157 804 Total investment securities available for sale $ 392,852 $ 19,355 $ 1,330,087 $ 226,931 $ 1,722,939 $ 246,286 Less than 12 Months 12 Months or Longer Total Fair Gross Fair Gross Fair Gross Investment securities available for sale at December 31, 2022 U.S. Treasury $ 2,459 $ 42 $ — $ — $ 2,459 $ 42 U.S. Government-sponsored agency securities 48,940 4,973 53,022 12,219 101,962 17,192 State and municipal 1,177,104 150,096 108,652 28,630 1,285,756 178,726 U.S. Government-sponsored mortgage-backed securities 182,700 16,910 325,455 83,448 508,155 100,358 Corporate obligations 12,176 807 — — 12,176 807 Total investment securities available for sale $ 1,423,379 $ 172,828 $ 487,129 $ 124,297 $ 1,910,508 $ 297,125 The following table summarizes 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 for the periods indicated. Gross Number of Securities Investment securities available for sale at March 31, 2023 U.S. Treasury $ 32 3 U.S. Government-sponsored agency securities 15,153 15 State and municipal 139,326 765 U.S. Government-sponsored mortgage-backed securities 90,971 173 Corporate obligations 804 10 Total investment securities available for sale $ 246,286 966 Gross Number of Securities Investment securities available for sale at December 31, 2022 U.S. Treasury $ 42 5 U.S. Government-sponsored agency securities 17,192 16 State and municipal 178,726 946 U.S. Government-sponsored mortgage-backed securities 100,358 177 Corporate obligations 807 10 Total investment securities available for sale $ 297,125 1,154 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. March 31, 2023 December 31, 2022 Investments available for sale reported at less than historical cost: Historical cost $ 1,969,225 $ 2,207,633 Fair value 1,722,939 1,910,508 Gross unrealized losses $ 246,286 $ 297,125 Percent of the Corporation's investments available for sale 96.0 % 96.7 % 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 loss 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 March 31, 2023 and December 31, 2022, 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 March 31, 2023 Due in one year or less $ 1,861 $ 1,854 $ 12,168 $ 12,225 Due after one through five years 21,853 20,346 112,941 105,185 Due after five through ten years 118,743 113,564 120,969 114,725 Due after ten years 1,312,894 1,164,839 1,258,569 1,045,755 1,455,351 1,300,603 1,504,647 1,277,890 U.S. Government-sponsored mortgage-backed securities 584,576 493,605 758,779 656,711 Total investment securities $ 2,039,927 $ 1,794,208 $ 2,263,426 $ 1,934,601 Available for Sale Held to Maturity Amortized Cost Fair Value Amortized Cost Fair Value Maturity Distribution at December 31, 2022 Due in one year or less $ 2,822 $ 2,809 $ 13,697 $ 13,749 Due after one through five years 11,694 11,265 80,697 76,453 Due after five through ten years 169,729 161,211 147,078 135,027 Due after ten years 1,480,472 1,293,103 1,269,826 1,020,477 1,664,717 1,468,388 1,511,298 1,245,706 U.S. Government-sponsored mortgage-backed securities 608,630 508,273 776,074 662,159 Total investment securities $ 2,273,347 $ 1,976,661 $ 2,287,372 $ 1,907,865 Securities with a carrying value of approximately $1.9 billion and $941.3 million were pledged at March 31, 2023 and December 31, 2022, 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, 2022 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 $205.6 million at March 31, 2023 and $196.7 million at December 31, 2022. Gross gains and losses on the sales and redemptions of investment securities available for sale for the three months ended March 31, 2023 and 2022 are shown below. Three Months Ended 2023 2022 Sales and redemptions of investment securities available for sale: Gross gains $ 12 $ 578 Gross losses (1,583) (12) Net gains (losses) on sales and redemptions of investment securities available for sale $ (1,571) $ 566

LOANS AND ALLOWANCE

LOANS AND ALLOWANCE	3 Months Ended
	Mar. 31, 2023
Receivables [Abstract]
LOANS AND ALLOWANCE	LOANS AND ALLOWANCE 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 March 31, 2023 and December 31, 2022, were $9.4 million and $9.1 million, respectively. The following table illustrates the composition of the Corporation’s loan portfolio by loan class for the periods indicated: March 31, 2023 December 31, 2022 Commercial and industrial loans $ 3,502,204 $ 3,437,126 Agricultural land, production and other loans to farmers 219,598 241,793 Real estate loans: Construction 960,979 835,582 Commercial real estate, non-owner occupied 2,375,410 2,407,475 Commercial real estate, owner occupied 1,244,117 1,246,528 Residential 2,185,943 2,096,655 Home equity 621,354 630,632 Individuals' loans for household and other personal expenditures 172,389 175,211 Public finance and other commercial loans 959,467 932,892 Loans $ 12,241,461 $ 12,003,894 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) non-performing 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 - A substandard loan is 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 currently 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 writing 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 by loan class and by year of origination for the years indicated. Consumer loans are not risk graded. For the purposes of this disclosure, the 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. March 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 $ 344,116 $ 833,832 $ 459,180 $ 118,142 $ 110,854 $ 80,036 $ 1,351,418 $ — $ 3,297,578 Special Mention 1,184 5,100 22,970 12,611 2,594 2,022 53,264 — 99,745 Substandard — 35,900 13,576 2,748 10,391 5,012 36,459 — 104,086 Doubtful — — 795 — — — — — 795 Total Commercial and industrial loans 345,300 874,832 496,521 133,501 123,839 87,070 1,441,141 — 3,502,204 Current period gross write-offs — 57 37 88 31 30 — — 243 Agricultural land, production and other loans to farmers Pass 12,568 42,153 35,465 34,244 14,954 30,246 47,301 — 216,931 Special Mention — 286 760 — — 885 — — 1,931 Substandard 37 170 — 462 — 67 — — 736 Total Agricultural land, production and other loans to farmers 12,605 42,609 36,225 34,706 14,954 31,198 47,301 — 219,598 Real estate loans: Construction Pass 177,799 317,261 295,533 111,333 930 3,162 17,785 — 923,803 Special Mention 15,625 14,014 — — — — — — 29,639 Substandard 17 2,795 4,725 — — — — — 7,537 Total Construction 193,441 334,070 300,258 111,333 930 3,162 17,785 — 960,979 Commercial real estate, non-owner occupied Pass 82,982 551,019 572,828 496,049 165,356 259,267 34,481 — 2,161,982 Special Mention 23,243 29,870 6,510 23,885 18,664 35,865 — — 138,037 Substandard 7,005 16,121 12,523 23,423 — 16,269 50 — 75,391 Total Commercial real estate, non-owner occupied 113,230 597,010 591,861 543,357 184,020 311,401 34,531 — 2,375,410 Current period gross write-offs — 2 — — — — — — 2 Commercial real estate, owner occupied Pass 53,588 240,722 306,558 309,989 114,099 122,322 31,628 — 1,178,906 Special Mention 63 17,766 2,692 5,623 732 3,502 4,076 — 34,454 Substandard 11,480 3,654 334 5,138 1,859 8,292 — — 30,757 Total Commercial real estate, owner occupied 65,131 262,142 309,584 320,750 116,690 134,116 35,704 — 1,244,117 Current period gross write-offs — — — — 2 — — — 2 Residential Pass 148,051 730,773 481,262 392,890 113,139 296,233 5,875 25 2,168,248 Special Mention 490 3,491 2,056 1,190 316 2,456 158 — 10,157 Substandard — 1,168 2,099 717 480 3,074 — — 7,538 Total Residential 148,541 735,432 485,417 394,797 113,935 301,763 6,033 25 2,185,943 Current period gross write-offs — 7 13 1 — 110 — — 131 Home equity Pass 6,244 41,482 71,558 14,219 1,529 6,052 471,404 2,006 614,494 Special Mention — 66 415 7 — 11 4,611 227 5,337 Substandard — — 78 — — 354 1,050 41 1,523 Total Home Equity 6,244 41,548 72,051 14,226 1,529 6,417 477,065 2,274 621,354 Current period gross write-offs — 18 25 2 20 169 — — 234 Individuals' loans for household and other personal expenditures Pass 16,204 60,965 39,063 11,318 4,409 8,397 30,980 — 171,336 Special Mention 3 259 117 42 8 23 461 128 1,041 Substandard — — — — — 12 — — 12 Total Individuals' loans for household and other personal expenditures 16,207 61,224 39,180 11,360 4,417 8,432 31,441 128 172,389 Current period gross write-offs — 191 114 37 13 102 — — 457 Public finance and other commercial loans Pass 13,114 214,727 210,600 159,678 97,254 242,322 21,772 — 959,467 Total Public finance and other commercial loans 13,114 214,727 210,600 159,678 97,254 242,322 21,772 — 959,467 Loans $ 913,813 $ 3,163,594 $ 2,541,697 $ 1,723,708 $ 657,568 $ 1,125,881 $ 2,112,773 $ 2,427 $ 12,241,461 Total current period gross charge-offs $ — $ 275 $ 189 $ 128 $ 66 $ 411 $ — $ — $ 1,069 December 31, 2022 Term Loans (amortized cost basis by origination year) Revolving loans amortized Revolving loans converted 2022 2021 2020 2019 2018 Prior cost basis to term Total Commercial and industrial loans Pass $ 1,064,687 $ 531,504 $ 141,985 $ 114,999 $ 43,136 $ 45,310 $ 1,302,562 $ 5,048 $ 3,249,231 Special Mention 2,164 18,005 11,900 5,727 1,012 2,181 27,702 150 68,841 Substandard 27,512 26,571 5,531 10,606 4,674 567 43,450 143 119,054 Total Commercial and industrial loans 1,094,363 576,080 159,416 131,332 48,822 48,058 1,373,714 5,341 3,437,126 Agricultural land, production and other loans to farmers Pass 44,446 36,299 35,791 15,296 3,752 28,910 73,402 — 237,896 Special Mention 286 784 — — 281 632 — — 1,983 Substandard 178 — 490 — 94 1,152 — — 1,914 Total Agricultural land, production and other loans to farmers 44,910 37,083 36,281 15,296 4,127 30,694 73,402 — 241,793 Real estate loans: Construction Pass 366,414 301,986 117,541 11,428 857 3,224 17,167 — 818,617 Special Mention 16,922 — — — — — — — 16,922 Substandard 31 — — — — 12 — — 43 Total Construction 383,367 301,986 117,541 11,428 857 3,236 17,167 — 835,582 Commercial real estate, non-owner occupied Pass 560,146 603,254 550,605 168,701 116,859 190,264 31,196 3,803 2,224,828 Special Mention 49,439 4,026 38,268 18,785 11,546 17,992 — — 140,056 Substandard 21,123 8,128 8,026 — 4,442 872 — — 42,591 Total Commercial real estate, non-owner occupied 630,708 615,408 596,899 187,486 132,847 209,128 31,196 3,803 2,407,475 Commercial real estate, owner occupied Pass 260,725 316,665 330,441 114,015 63,816 81,286 33,123 3,378 1,203,449 Special Mention 7,744 6,125 2,245 3,481 1,210 2,984 1,328 — 25,117 Substandard 3,124 1,214 2,376 1,608 2,920 6,720 — — 17,962 Total Commercial real estate, owner occupied 271,593 324,004 335,062 119,104 67,946 90,990 34,451 3,378 1,246,528 Residential Pass 758,161 489,301 401,353 114,420 77,768 229,812 5,365 46 2,076,226 Special Mention 2,839 2,924 1,972 513 396 2,588 34 — 11,266 Substandard 1,399 1,824 1,811 805 1,468 1,741 60 55 9,163 Total Residential 762,399 494,049 405,136 115,738 79,632 234,141 5,459 101 2,096,655 Home equity Pass 40,768 75,670 14,621 1,572 1,348 3,325 486,924 281 624,509 Special Mention — — — — 115 8 3,698 — 3,821 Substandard — 79 — — 65 60 2,098 — 2,302 Total Home Equity 40,768 75,749 14,621 1,572 1,528 3,393 492,720 281 630,632 Individuals' loans for household and other personal expenditures Pass 67,883 43,639 13,025 5,389 5,830 3,775 35,091 — 174,632 Special Mention 178 134 77 33 28 17 16 — 483 Substandard 1 — 3 — 84 8 — — 96 Total Individuals' loans for household and other personal expenditures 68,062 43,773 13,105 5,422 5,942 3,800 35,107 — 175,211 Public finance and other commercial loans Pass 187,125 212,702 165,019 98,687 43,760 204,719 20,880 — 932,892 Total Public finance and other commercial loans 187,125 212,702 165,019 98,687 43,760 204,719 20,880 — 932,892 Loans $ 3,483,295 $ 2,680,834 $ 1,843,080 $ 686,065 $ 385,461 $ 828,159 $ 2,084,096 $ 12,904 $ 12,003,894 Total past due loans equaled $82.9 million as of March 31, 2023 representing a $31.9 million increase from $51.0 million at December 31, 2022. The 60-89 days past due loans increased $21.0 million from December 31, 2022. Commercial and industrial, commercial real estate non-owner occupied and owner occupied segments increased $9.6 million, $3.0 million, and $7.4 million, respectively. The 90 days or more past due loans increased $11.0 million from December 31, 2022. Commercial and industrial and commercial real estate, non-owner occupied segments increased $4.5 million and $5.8 million, respectively. The 90 days or more past due and accruing loans increased $5.3 million from December 31, 2022, primarily in the commercial and industrial and commercial real estate, owner occupied segments. The tables below show a past due aging of the Corporation’s loan portfolio, by loan class, for the periods indicated: March 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 $ 3,480,761 $ 4,438 $ 9,995 $ 7,010 $ 3,502,204 $ 4,631 Agricultural land, production and other loans to farmers 219,571 — — 27 219,598 — Real estate loans: Construction 957,367 3,612 — — 960,979 — Commercial real estate, non-owner occupied 2,353,426 7,154 3,891 10,939 2,375,410 797 Commercial real estate, owner occupied 1,231,113 3,757 7,444 1,803 1,244,117 1,588 Residential 2,170,577 6,667 2,759 5,940 2,185,943 — Home equity 615,199 2,626 2,214 1,315 621,354 16 Individuals' loans for household and other personal expenditures 171,336 408 633 12 172,389 — Public finance and other commercial loans 959,258 209 — — 959,467 — Loans $ 12,158,608 $ 28,871 $ 26,936 $ 27,046 $ 12,241,461 $ 7,032 December 31, 2022 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 $ 3,429,314 $ 4,904 $ 434 $ 2,474 $ 3,437,126 $ 1,147 Agricultural land, production and other loans to farmers 241,739 — — 54 241,793 — Real estate loans: Construction 832,716 2,436 418 12 835,582 — Commercial real estate, non-owner occupied 2,395,495 5,946 881 5,153 2,407,475 264 Commercial real estate, owner occupied 1,241,714 4,495 — 319 1,246,528 — Residential 2,079,959 8,607 2,278 5,811 2,096,655 — Home equity 624,543 2,206 1,782 2,101 630,632 326 Individuals' loans for household and other personal expenditures 174,629 343 142 97 175,211 — Public finance and other commercial loans 932,778 114 — — 932,892 — Loans $ 11,952,887 $ 29,051 $ 5,935 $ 16,021 $ 12,003,894 $ 1,737 Loans are reclassified to a non-accruing 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 non-accrual 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 non-accrual loans by loan class for the periods indicated: March 31, 2023 December 31, 2022 Non-Accrual Loans Non-Accrual Loans with no Allowance for Credit Losses Non-Accrual Loans Non-Accrual Loans with no Allowance for Credit Losses Commercial and industrial loans $ 11,051 $ 856 $ 3,292 $ 481 Agricultural land, production and other loans to farmers 64 — 54 — Real estate loans: Construction — — 12 — Commercial real estate, non-owner occupied 16,550 1,830 19,374 280 Commercial real estate, owner occupied 2,926 2,236 3,550 2,784 Residential 14,154 — 13,685 702 Home equity 1,811 — 2,247 — Individuals' loans for household and other personal expenditures 20 — 110 — Loans $ 46,576 $ 4,922 $ 42,324 $ 4,247 Interest income on non-accrual loans is recognized only to the extent that cash payments are received in excess of principal due. There was no interest income recognized on non-accrual loans for the three months ended March 31, 2023 or 2022. 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. Commercial and Industrial collateral dependent loans and related allowance increased $8.9 million and $5.6 million, respectively, for the three months ended March 31, 2023. The total increase in the collateral dependent balance was offset by a decrease in the commercial real estate, non-owner occupied segment of $3.6 million for the three months ended March 31, 2023. March 31, 2023 Commercial Real Estate Residential Real Estate Other Total Allowance on Collateral Dependent Loans Commercial and industrial loans $ — $ — $ 50,996 $ 50,996 $ 13,937 Real estate loans: Construction — 10 — 10 1 Commercial real estate, non-owner occupied 22,908 — — 22,908 1,656 Commercial real estate, owner occupied 6,396 — — 6,396 361 Residential — 1,588 — 1,588 253 Home equity — 283 — 283 42 Loans $ 29,304 $ 1,881 $ 50,996 $ 82,181 $ 16,250 December 31, 2022 Commercial Real Estate Residential Real Estate Other Total Allowance on Collateral Dependent Loans Commercial and industrial loans $ — $ — $ 42,101 $ 42,101 $ 8,367 Real estate loans: Construction — 10 — 10 1 Commercial real estate, non-owner occupied 26,534 — — 26,534 2,064 Commercial real estate, owner occupied 6,986 — — 6,986 776 Residential — 2,382 — 2,382 260 Home equity — 289 — 289 44 Loans $ 33,520 $ 2,681 $ 42,101 $ 78,302 $ 11,512 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 the above. The following table presents the amortized cost basis of loans at March 31, 2023 that were both experiencing financial difficulty and modified during the three months ended March 31, 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. Loan Modifications Made to Borrowers Experiencing Financial Difficulty Term Extension Combination Interest Rate Reduction & Term Extension % of Total Class of Financing Receivable Commercial and industrial loans $ 9,224 $ — 0.26 % Agricultural land, production and other loans to farmers 37 — 0.02 % Real estate loans: Construction 17 — — % Commercial Real Estate, Non Owner Occupied 97 5,966 0.26 % Commercial Real Estate, Owner Occupied 10,822 82 0.88 % Total $ 20,197 $ 6,048 The following table presents the financial effect of the loan modifications presented above to borrowers experiencing financial difficulty for the three months ended March 31, 2023. Financial Effect of Loan Modifications Term Extension Combination Interest Rate Reduction & Term Extension Commercial and industrial loans Added a weighted average life of 4 months to the life of the loans, which reduced monthly payment amounts for the borrowers. Agricultural land, production and other loans to farmers Added a weighted average life of 60 months to the life of the loans, which reduced monthly payment amounts for the borrowers. Real estate loans: Construction Added a weighted average life of 24 months to the life of the loans, which reduced monthly payment amounts for the borrowers. Commercial Real Estate, Non Owner Occupied Added a weighted average life of 12 months to the life of the loans, which reduced monthly payment amounts for the borrowers. Reduced the weighted average contractual interest rate from 7.81 percent to 7.40 percent. Added a weighted average 41 months to the life of loans, which reduced monthly payment amounts for the borrowers. Commercial Real Estate, Owner Occupied Added a weighted average life of 9 months to the life of the loans, which reduced monthly payment amounts for the borrowers. Reduced the weighted average contractual interest rate from 10.25 percent to 6.61 percent. Added a weighted average 114 months to the life of loans, which reduced monthly payment amounts for the borrowers. The following table presents the amortized cost basis of loans that had a payment default and were modified during the three months ended March 31, 2023 due to the borrowers experiencing financial difficulty. At this time, all of the modifications are current. Payment Status Current Commercial and industrial loans $ 9,224 Agricultural land, production and other loans to farmers 37 Real estate loans: Construction 17 Commercial Real Estate, Non Owner Occupied 6,063 Commercial Real Estate, Owner Occupied 10,904 Total $ 26,245 Upon the Company's determination that a modified loan (or portion of a loan) has subsequently been deemed uncollectible, the loan (or portion of the loan) is written off. Therefore, the amortized cost basis of the loan is reduced by the uncollectible amount and the allowance for credit losses is adjusted by the same amount. Purchased Credit Deteriorated Loans The Corporation acquired Level One on April 1, 2022 and performed an evaluation of the loan portfolio in which there were loans that, at acquisition, had more than an insignificant amount of credit quality deterioration. The carrying amount of those loans is shown in the table below: Level One Purchase price of loans at acquisition $ 41,347 CECL Day 1 PCD ACL 16,599 Par value of acquired loans at acquisition $ 57,946 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 current expected credit loss ("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 by delinquency status where appropriate. The Corporation utilized a four-quarter reasonable and supportable economic forecast period followed by a six-quarter, straight-line reversion period to the historical macroeconomic mean for the remaining life of the loans. Econometric modeling was performed using historical default rates and a selection of economic forecast scenarios published by Moody’s to develop a range of estimated credit losses for which to determine the best credit loss estimate within. Macroeconomic factors utilized in the modeling process include the national unemployment rate, BBB US corporate index, CRE price index and the home price index. The Corporation qualitatively adjusts model results for risk factors that are not inherently considered in the quantitative modeling process, but are nonetheless relevant in assessing the expected credit losses within the loan portfolio. These adjustments may increase or decrease the estimate of expected credit losses based upon the assessed level of risk for each qualitative factor. The various risks that may be considered in making qualitative adjustments include, among other things, the impact of (i) changes in the nature and volume of the loan portfolio, (ii) changes in the existence, growth and effect of any concentrations in credit, (iii) changes in lending policies and procedures, including changes in underwriting standards and practices for collections, write-offs, and recoveries, (iv) changes in the quality of the credit review function, (v) changes in the experience, ability and depth of lending management and staff, and (vi) other environmental factors of a borrower such as regulatory, legal and technological considerations, as well as competition. In some cases, management may determine that an individual loan exhibits unique risk characteristics which differentiate the loan from other loans within the loan segments. In such cases, the loans are evaluated for expected credit losses on an individual basis and excluded from the collective evaluation. Specific reserve allocations of the allowance for credit losses are determined by analyzing the borrower’s ability to repay amounts owed, collateral deficiencies, the relative risk grade of the loan and economic conditions affecting the borrower’s industry, among other things. A loan is considered to be collateral dependent when, based upon management's assessment, the borrower is experiencing financial difficulty and repayment is expected to be provided substantially through the operation or sale of the collateral. In such cases, expected credit losses are based on the fair value of the collateral at the measurement date, adjusted for estimated selling costs if satisfaction of the loan depends on the sale of the collateral. The fair value of collateral supporting collateral dependent loans is evaluated on a quarterly basis. No allowance for credit losses has been recognized for PPP loans as such loans are fully guaranteed by the Small Business Administration ("SBA"). The risk characteristics of the Corporation’s portfolio segments are as follows: Commercial Commercial lending is primarily based on the identified cash flows of the borrower and secondarily on the underlying collateral provided by the borrower. The cash flows of borrowers, however, may not be as expected and the collateral securing these loans may fluctuate in value. Most commercial loans are secured by the tangible assets being financed such as equipment or real estate or other business assets such as accounts receivable or inventory and may incorporate a personal guarantee. Other loans may be unsecured, secured but under-collateralized or otherwise made on the basis of the enterprise value of an organization. In the case of loans secured by accounts receivable, the availability of funds for the repayment of these loans may be substantially dependent on the ability of the borrower to collect amounts due from its customers. Commercial real estate Commercial real estate loans are viewed primarily as cash flow loans and secondarily as loans secured by real estate. Commercial real estate lending typically involves higher loan principal amounts and the repayment of these loans is generally dependent on the successful operation of the property securing the loan or the business conducted on the property securing the loan. The Corporation monitors commercial real estate loans based on collateral and risk grade criteria, as well as the levels of owner-occupied versus non-owner occupied loans. Construction Construction loans are underwritten utilizing a combination of tools and techniques including feasibility and market studies, independent appraisals and appraisal reviews, absorption and interest rate sensitivity analysis as well as the financial analysis of the developer and all guarantors. Construction loans are monitored by either in house or third party inspectors limiting advances to a percentage of costs or stabilized project value. These loans frequently involve the disbursement of significant funds with the repayment dependent upon the successful completion and, where necessary, the future stabilization of the project. The predominant inherent risk of this portfolio is associated with the borrower's ability to successfully complete a project on time, within budget and stabilize the projected as originally projected. Consumer and Residential With respect to residential loans that are secured by 1-4 family residences, which are typically owner occupied, the Corporation generally establishes a maximum loan-to-value ratio and requires private mortgage insurance if that ratio is exceeded. Home equity loans are secured by a subordinate interest in 1-4 family residences, and consumer loans are secured by consumer assets such as automobiles or recreational vehicles. Some consumer loans, such as small installment loans and certain lines of credit, are unsecured. Repayment of these loans is primarily dependent on the personal income and credit rating of the borrowers and can also be impacted by changes in property values. Risk is mitigated by the fact that the loans are of smaller individual amounts and spread over a large number of borrowers. The allowance for credit losses decreased $225,000 due to net charge-offs during the three months ended March 31, 2023. The allowance for credit losses increased $587,000 due to net recoveries during the three months ended March 31, 2022. There was no provision for credit losses during the three months ended March 31, 2023 and 2022. The following tables summarize changes in the allowance for credit losses by loan segment for the three months ended March 31, 2023 and 2022: Three Months Ended March 31, 2023 Commercial Commercial Real Estate Construction Consumer & Residential Total Allowance for credit losses Balances, December 31, 2022 $ 102,216 $ 46,839 $ 28,955 $ 45,267 $ 223,277 Provision for credit losses (1,199) (583) (384) 2,166 — Recoveries on loans 530 56 — 258 844 Loans charged off (243) (4) — (822) (1,069) Balances, March 31, 2023 $ 101,304 $ 46,308 $ 28,571 $ 46,869 $ 223,052 Three Months Ended March 31, 2022 Commercial Commercial Real Estate Construction Consumer & Residential Total Allowance for credit losses Balances, December 31, 2021 $ 69,935 $ 60,665 $ 20,206 $ 44,591 $ 195,397 Provision for credit losses 7,571 (8,250) 554 125 — Recoveries on loans 139 707 — 206 1,052 Loans charged off (8) (122) — (335) (465) Balances, March 31, 2022 $ 77,637 $ 53,000 $ 20,760 $ 44,587 $ 195,984 Off-Balance Sheet Arrangements, Commitments And Contingencies In the normal course of business, the Corporation has entered into off-balance sheet financial instruments which include commitments to extend credit and standby letters of credit. Commitments to extend credit are usually the result of lines of credit granted to existing borrowers under agreements that the total outstanding indebtedness will not exceed a specific amount during the term of the indebtedness. Typical borrowers are commercial customers that use lines of credit to supplement their treasury management functions, and thus their total outstanding indebtedness may fluctuate during any time period based on the seasonality of their business and the resultant timing for their cash flows. Other typical lines of credit are related to home equity loans granted to customers. Commitments to extend credit generally have fixed expiration dates or other termination clauses that may require a fee. Standby letters of credit are generally issued on behalf of an applicant (the Corporation’s customer) to a specifically named beneficiary and are the result of a particular business arrangement that exists between the applicant and the beneficiary. Standby letters of credit have fixed expiration dates and are usually for terms of two years or less unless terminated be

GOODWILL

GOODWILL	3 Months Ended
	Mar. 31, 2023
Goodwill and Intangible Assets Disclosure [Abstract]
GOODWILL	GOODWILL Goodwill is recorded on the acquisition date of an entity. The Corporation has one year after the acquisition date, the measurement period, to record subsequent adjustments to goodwill for provisional amounts recorded at the acquisition date. The Level One acquisition on April 1, 2022 resulted in $166.6 million of goodwill. Details regarding the Level One acquisition are discussed in NOTE 2. ACQUISITIONS of these Notes to Consolidated Condensed Financial Statements. There have been no changes in goodwill since December 31, 2022. As such, the balance as of March 31, 2023 was $712.0 million. 2022 Balance, January 1 $ 545,385 Goodwill acquired 166,617 Balance, December 31 $ 712,002

OTHER INTANGIBLES

OTHER INTANGIBLES	3 Months Ended
	Mar. 31, 2023
Goodwill and Intangible Assets Disclosure [Abstract]
OTHER INTANGIBLES	OTHER INTANGIBLES Core deposit intangibles and other intangibles are recorded on the acquisition date of an entity. The Corporation has one year after the acquisition date, the measurement period, to record subsequent adjustments to these intangibles for provisional amounts recorded at the acquisition date. The Level One acquisition on April 1, 2022 resulted in a core deposit intangible of $17.2 million and other intangibles, consisting of non-compete intangibles, of $1.4 million. Details regarding the Level One acquisition are discussed in NOTE 2. ACQUISITIONS of these Notes to Consolidated Condensed Financial Statements. The carrying basis and accumulated amortization of recognized core deposit intangibles and other intangibles are noted below. March 31, 2023 December 31, 2022 Gross carrying amount $ 123,285 $ 104,643 Other intangibles acquired — 18,642 Accumulated amortization (89,640) (87,443) Total core deposit and other intangibles $ 33,645 $ 35,842 The core deposit intangibles and other intangibles are being amortized primarily on an accelerated basis over their estimated useful lives, generally over a period of two years to ten years. Intangible amortization expense for the three months ended March 31, 2023 was $2.2 million, compared to the three months ended March 31, 2022 which was $1.4 million. Estimated future amortization expense is summarized as follows: Amortization Expense 2023 $ 6,547 2024 7,271 2025 6,028 2026 4,910 2027 3,603 After 2027 5,286 $ 33,645

DERIVATIVE FINANCIAL INSTRUMENT

DERIVATIVE FINANCIAL INSTRUMENTS	3 Months Ended
	Mar. 31, 2023
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 March 31, 2023 and December 31, 2022, the Corporation had one interest rate swap with a notional amount of $10.0 million that was designated as a cash flow hedge. 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 income (loss) and is subsequently reclassified into earnings in the period that the hedged forecasted transaction affects earnings. During 2023, $10.0 million of interest rate swaps were used to hedge the variable cash outflows (LIBOR-based) associated with one Federal Home Loan Bank advance. The ineffective portion of the change in fair value of the derivatives is recognized directly in earnings. During the three months ended March 31, 2023 and 2022, the Corporation did not recognize any ineffectiveness. Amounts reported in accumulated other comprehensive income (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 expects to reclassify $112,000 from accumulated other comprehensive income (loss) to interest income. The following table summarizes the Corporation's derivatives designated as hedges: Asset Derivatives Liability Derivatives March 31, 2023 December 31, 2022 March 31, 2023 December 31, 2022 Balance Fair Balance Fair Balance Fair Balance Fair Cash flow hedges: Interest rate swaps on borrowings Other Assets $ 112 Other Assets $ 164 Other Liabilities $ — Other Liabilities $ — The amount of gain (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 Gain (Loss) Recognized in Other Comprehensive Income (Loss) on Derivatives Three Months Ended March 31, 2023 March 31, 2022 Interest Rate Products $ (51) $ 303 The amount of gain (loss) reclassified from other comprehensive income (loss) into income related to cash flow hedging relationships is included in the table below for the periods indicated. Derivatives Designated as Location of Gain (Loss) Amount of Gain (Loss) Reclassed from Other Comprehensive Income (Loss) into Income (Effective Portion) Three Months Ended Three Months Ended Interest rate contracts Interest Expense $ 1 $ (241) 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 Balance Sheet, as of March 31, 2023, and December 31, 2022. March 31, 2023 December 31, 2022 Notional Amount Fair Value Notional Amount Fair Value Included in other assets: Interest rate swaps $ 1,279,225 $ 73,757 $ 1,184,866 $ 92,652 Forward contracts related to mortgage loans to be delivered for sale 8,356 305 14,406 188 Interest rate lock commitments 22,785 171 5,049 32 Included in other assets $ 1,310,366 $ 74,233 $ 1,204,321 $ 92,872 Included in other liabilities: Interest rate swaps $ 1,279,225 $ 73,757 $ 1,184,866 $ 92,652 Forward contracts related to mortgage loans to be delivered for sale 22,601 149 4,483 63 Interest rate lock commitments 2,195 8 7,549 55 Included in other liabilities $ 1,304,021 $ 73,914 $ 1,196,898 $ 92,770 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 table below for the periods indicated. Derivatives Not Designated as Location of Gain (Loss) Amount of Gain (Loss) Three Months Ended Three Months Ended Forward contracts related to mortgage loans to be delivered for sale Net gains and fees on sales of loans $ (46) $ — Interest rate lock commitments Net gains and fees on sales of loans 227 — Total net gain/(loss) recognized in income $ 181 $ — 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 control 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 March 31, 2023, the termination value of derivatives in a net liability position related to these agreements was $2.5 million, which resulted in no collateral pledged to counterparties as of March 31, 2023. While the Corporation did not breach any of these provisions as of March 31, 2023, 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	3 Months Ended
	Mar. 31, 2023
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. Level 1 securities include U.S. Treasury 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 7. 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 ASC 820-10 fair value hierarchy in which the fair value measurements fall at March 31, 2023, and December 31, 2022. Fair Value Measurements Using: March 31, 2023 Fair Value Quoted Prices in Active Markets for Identical Assets Significant Other Significant Available for sale securities: U.S. Treasury $ 2,082 $ 2,082 $ — $ — U.S. Government-sponsored agency securities 102,598 — 102,598 — State and municipal 1,183,736 — 1,180,309 3,427 U.S. Government-sponsored mortgage-backed securities 493,605 — 493,601 4 Corporate obligations 12,187 — 12,156 31 Derivative assets 74,345 — 74,345 — Derivative liabilities 73,914 — 73,914 — Fair Value Measurements Using: December 31, 2022 Fair Value Quoted Prices in Significant Other Observable Inputs Significant Available for sale securities: U.S. Treasury $ 2,459 $ 2,459 $ — $ — U.S. Government-sponsored agency securities 101,962 — 101,962 — State and municipal 1,351,760 — 1,348,356 3,404 U.S. Government-sponsored mortgage-backed securities 508,273 — 508,269 4 Corporate obligations 12,207 — 12,176 31 Derivative assets 93,036 — 93,036 — Derivative liabilities 92,770 — 92,770 — 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 months ended March 31, 2023 and 2022. Available for Sale Securities Three Months Ended March 31, 2023 March 31, 2022 Balance at beginning of the period $ 3,439 $ 5,491 Included in other comprehensive income 114 (493) Purchases, issuances and settlements — 4,100 Principal payments (91) (186) Ending balance $ 3,462 $ 8,912 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 March 31, 2023 or December 31, 2022. Transfers Between Levels There were no transfers in or out of Level 3 for the three months ended March 31, 2023 and 2022. Nonrecurring Measurements Following is a description of valuation methodologies used for instruments measured at fair value on a non-recurring basis and recognized in the accompanying balance sheets, as well as the general classification of such instruments pursuant to the valuation hierarchy at March 31, 2023, and December 31, 2022. Fair Value Measurements Using March 31, 2023 Fair Value Quoted Prices in Significant Other Significant Unobservable Collateral dependent loans $ 51,757 $ — $ — $ 51,757 Fair Value Measurements Using December 31, 2022 Fair Value Quoted Prices in Significant Other Significant Unobservable Collateral dependent loans $ 55,290 $ — $ — $ 55,290 Collateral Dependent Loans and Other Real Estate Owned Determining fair value for collateral dependent loans and other real estate 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 table presents quantitative information about unobservable inputs used in recurring and nonrecurring Level 3 fair value measurements, other than goodwill, at March 31, 2023 and December 31, 2022. March 31, 2023 Fair Value Valuation Technique Unobservable Inputs Range (Weighted-Average) State and municipal securities $ 3,427 Discounted cash flow Maturity/Call date 1 month to 15 years US Muni BQ curve A- to BBB Discount rate 3.1% - 4.4% Weighted-average coupon 3.4% Corporate obligations and U.S. Government-sponsored mortgage-backed securities $ 35 Discounted cash flow Risk free rate 3 month LIBOR plus premium for illiquidity (basis points) plus 200bps Weighted-average coupon 0% Collateral dependent loans $ 51,757 Collateral based measurements Discount to reflect current market conditions and ultimate collectability 0% - 10% Weighted-average discount by loan balance 1.5% December 31, 2022 Fair Value Valuation Technique Unobservable Inputs Range (Weighted-Average) State and municipal securities $ 3,404 Discounted cash flow Maturity/Call date 1 month to 15 years US Muni BQ curve A- to BBB Discount rate 0.4% - 4% Weighted-average coupon 3.4% Corporate obligations and U.S. Government-sponsored mortgage-backed securities $ 35 Discounted cash flow Risk free rate 3 month LIBOR plus premium for illiquidity (basis points) plus 200bps Weighted-average coupon 0% Collateral dependent loans $ 55,290 Collateral based measurements Discount to reflect current market conditions and ultimate collectability 0% - 10% Weighted-average discount by loan balance 1.1% 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 table presents 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 March 31, 2023 and December 31, 2022. March 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 $ 125,818 $ 125,818 $ — $ — $ 125,818 Interest-bearing deposits 352,695 352,695 — — 352,695 Investment securities available for sale 1,794,208 2,082 1,788,664 3,462 1,794,208 Investment securities held to maturity 2,263,181 — 1,920,038 14,563 1,934,601 Loans held for sale 9,408 — 9,408 — 9,408 Loans, net 12,018,409 — — 11,573,561 11,573,561 Federal Home Loan Bank stock 41,878 — 41,878 — 41,878 Derivative assets 74,345 — 74,345 — 74,345 Interest receivable 85,515 — 85,515 — 85,515 Liabilities: Deposits $ 14,703,287 $ 12,921,842 $ 1,759,938 $ — 14,681,780 Borrowings: Federal funds purchased 20 — 20 — 20 Securities sold under repurchase agreements 179,067 — 179,051 — 179,051 Federal Home Loan Bank advances 823,577 — 819,690 — 819,690 Subordinated debentures and other borrowings 151,312 — 121,402 — 121,402 Derivative liabilities 73,914 — 73,914 — 73,914 Interest payable 11,979 — 11,979 — 11,979 December 31, 2022 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 $ 122,594 $ 122,594 $ — $ — $ 122,594 Interest-bearing deposits 126,061 126,061 — — 126,061 Investment securities available for sale 1,976,661 2,459 1,970,763 3,439 1,976,661 Investment securities held to maturity 2,287,127 — 1,893,271 14,594 1,907,865 Loans held for sale 9,094 — 9,094 — 9,094 Loans, net 11,780,617 — — 11,156,217 11,156,217 Federal Home Loan Bank stock 38,525 — 38,525 — 38,525 Derivative assets 93,036 — 93,036 — 93,036 Interest receivable 85,070 — 85,070 — 85,070 Liabilities: Deposits $ 14,382,745 $ 13,105,936 $ 1,251,017 $ — 14,356,953 Borrowings: Federal funds purchased 171,560 — 171,560 — 171,560 Securities sold under repurchase agreements 167,413 — 167,396 — 167,396 Federal Home Loan Bank advances 823,674 — 615,211 — 615,211 Subordinated debentures and other borrowings 151,298 — 122,102 — 122,102 Derivative liabilities 92,770 — 92,770 — 92,770 Interest payable 7,530 — 7,530 — 7,530

TRANSFERS ACCOUNTED FOR AS SECU

TRANSFERS ACCOUNTED FOR AS SECURED BORROWINGS	3 Months Ended
	Mar. 31, 2023
Transfers and Servicing [Abstract]
TRANSFERS ACCOUNTED FOR AS SECURED BORROWINGS	TRANSFERS ACCOUNTED FOR AS SECURED BORROWINGS The collateral pledged for all repurchase agreements that are accounted for as secured borrowings as of March 31, 2023 and December 31, 2022 were: March 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 $ 179,067 $ — $ — $ — $ 179,067 December 31, 2022 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 $ 167,413 $ — $ — $ — $ 167,413

ACCUMULATED OTHER COMPREHENSIVE

ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS)	3 Months Ended
	Mar. 31, 2023
Equity [Abstract]
ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS)	ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) The following table summarizes the changes in the balances of each component of accumulated other comprehensive income (loss), net of tax, as of March 31, 2023 and 2022: Accumulated Other Comprehensive Income (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, 2022 $ (234,495) $ 130 $ (4,786) $ (239,151) Other comprehensive income (loss) before reclassifications 39,038 (41) — 38,997 Amounts reclassified from accumulated other comprehensive income 1,241 (1) — 1,240 Period change 40,279 (42) — 40,237 Balance at March 31, 2023 $ (194,216) $ 88 $ (4,786) $ (198,914) Balance at December 31, 2021 $ 59,774 $ (660) $ (4,001) $ 55,113 Other comprehensive income (loss) before reclassifications (139,487) 239 — (139,248) Amounts reclassified from accumulated other comprehensive income (447) 190 — (257) Period change (139,934) 429 — (139,505) Balance at March 31, 2022 $ (80,160) $ (231) $ (4,001) $ (84,392) The following table presents the reclassification adjustments out of accumulated other comprehensive income (loss) that were included in net income in the Consolidated Condensed Statements of Income for the three months ended March 31, 2023 and 2022. Amount Reclassified from Accumulated Other Comprehensive Income (Loss) For the Three Months Ended March 31, Details about Accumulated Other Comprehensive Income (Loss) Components 2023 2022 Affected Line Item in the Statements of Income Unrealized gains (losses) on available for sale securities (1) Realized securities gains (losses) reclassified into income $ (1,571) $ 566 Other income - net realized gains (losses) on sales of available for sale securities Related income tax benefit (expense) 330 (119) Income tax expense $ (1,241) $ 447 Unrealized gains (losses) on cash flow hedges (2) Interest rate contracts $ 1 $ (241) Interest expense - subordinated debentures and term loans Related income tax benefit — 51 Income tax expense $ 1 $ (190) Total reclassifications for the period, net of tax $ (1,240) $ 257 (1) For additional detail related to unrealized gains (losses) on available for sale securities and related amounts reclassified from accumulated other comprehensive income 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 income see NOTE 7. DERIVATIVE FINANCIAL INSTRUMENTS of these Notes to Consolidated Condensed Financial Statements.

SHARE-BASED COMPENSATION

SHARE-BASED COMPENSATION	3 Months Ended
	Mar. 31, 2023
Share-Based Payment Arrangement [Abstract]
SHARE-BASED COMPENSATION	SHARE-BASED COMPENSATION Stock options and RSAs have been issued to directors, officers and other management employees under the Corporation's 2009 Long-term Equity Incentive Plan, the 2019 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 2019 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. 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 0.2 percent for the three months ended March 31, 2023, 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 2023 2022 Stock and ESPP Options Pre-tax compensation expense $ 30 $ 29 Income tax expense (benefit) (57) (17) Stock and ESPP option expense, net of income taxes $ (27) $ 12 Restricted Stock Awards Pre-tax compensation expense $ 1,167 $ 1,071 Income tax expense (benefit) (255) (226) Restricted stock awards expense, net of income taxes $ 912 $ 845 Total Share-Based Compensation Pre-tax compensation expense $ 1,197 $ 1,100 Income tax expense (benefit) (312) (243) Total share-based compensation expense, net of income taxes $ 885 $ 857 The grant date fair value of ESPP options was estimated to be approximately $30,000 at the beginning of the January 1, 2023 quarterly offering period. The ESPP options vested during the three months ending March 31, 2023, leaving no unrecognized compensation expense related to unvested ESPP options at March 31, 2023. Stock option activity under the Corporation's stock option plans as of March 31, 2023 and changes during the three months ended March 31, 2023, were as follows: Number of Weighted-Average Exercise Price Weighted Average Remaining Aggregate Outstanding at January 1, 2023 155,100 $ 18.89 Exercised (58,620) $ 17.23 Outstanding March 31, 2023 96,480 $ 19.90 2.51 $ 1,259,244 Vested and Expected to Vest at March 31, 2023 96,480 $ 19.90 2.51 $ 1,259,244 Exercisable at March 31, 2023 96,480 $ 19.90 2.51 $ 1,259,244 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 three months of 2023 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 March 31, 2023. The amount of aggregate intrinsic value will change based on the fair market value of the Corporation's common stock. The aggregate intrinsic value of stock options exercised during the three months ended March 31, 2023 and 2022 was $1.4 million and $91,000, respectively. Cash receipts of stock options exercised during this same period were $1.0 million and $37,000, respectively. The following table summarizes information on unvested RSAs outstanding as of March 31, 2023: Number of Shares Weighted-Average Unvested RSAs at January 1, 2023 416,705 $ 36.97 Granted 12,146 $ 34.41 Vested (7,573) $ 26.47 Forfeited (1,200) $ 36.31 Unvested RSAs at March 31, 2023 420,078 $ 37.09 As of March 31, 2023, unrecognized compensation expense related to RSAs was $8.1 million and is expected to be recognized over a weighted-average period of 1.6 years. The Corporation did not have any unrecognized compensation expense related to stock options as of March 31, 2023.

INCOME TAX

INCOME TAX	3 Months Ended
	Mar. 31, 2023
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 statements of income for the three months ended March 31, 2023 and 2022: Three Months Ended 2023 2022 Reconciliation of Federal Statutory to Actual Tax Expense: Federal statutory income tax at 21% $ 15,833 $ 11,729 Tax-exempt interest income (4,867) (4,520) Share-based compensation (61) (12) Tax-exempt earnings and gains on life insurance (270) (354) Tax credits (92) (87) State Income Tax 700 495 Other 74 15 Actual Tax Expense $ 11,317 $ 7,266 Effective Tax Rate 15.0 % 13.0 %

NET INCOME PER COMMON SHARE

NET INCOME PER COMMON SHARE	3 Months Ended
	Mar. 31, 2023
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 table reconciles basic and diluted net income per common share for the three months ended March 31, 2023 and 2022. Three Months Ended March 31, 2023 2022 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 $ 63,610 59,216,198 $ 1.07 $ 48,586 53,412,762 $ 0.91 Effect of potentially dilutive stock options and restricted stock awards 224,530 203,106 Diluted net income per common share $ 63,610 59,440,728 $ 1.07 $ 48,586 53,615,868 $ 0.91

GENERAL LITIGATION AND REGULATO

GENERAL LITIGATION AND REGULATORY EXAMINATIONS	3 Months Ended
	Mar. 31, 2023
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.

GENERAL (Policies)

GENERAL (Policies)	3 Months Ended
	Mar. 31, 2023
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Financial Statement Preparation	Financial Statement PreparationThe Consolidated Condensed Balance Sheet of the Corporation as of December 31, 2022, 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, 2022 filed with the Securities and Exchange Commission. The results of operations for the three months ended March 31, 2023, are not necessarily indicative of the results to be expected for the year. Reclassifications have been made to prior financial statements to conform to the current financial statement presentation. These reclassifications had no effect on net income. 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.
New Accounting Pronouncements Not Yet Adopted	Recent Accounting Changes Adopted in 2023 FASB Accounting Standards Updates - No. 2021-08 - Business Combinations (Topic 805) - Accounting for Contract Assets and Contract Liabilities from Contracts with Customers Summary - The FASB issued ASU No. 2021-08, Business Combinations (Topic 805): Accounting for Contract Assets and Contract Liabilities from Contracts with Customers , that addressed diversity in practice related to the accounting for revenue contracts with customers acquired in a business combination. Under current GAAP, an acquirer generally recognized assets acquired and liabilities assumed in a business combination, including contract assets and contract liabilities arising from revenue contracts with customers and other similar contracts that are accounted for in accordance with Topic 606 , Revenue from Contracts with Customers , at fair value on the acquisition date. The FASB indicated that some stakeholders indicated that it is unclear how an acquirer should evaluate whether to recognize a contract liability from a revenue contract with a customer acquired in a business combination after Topic 606 was adopted. Furthermore, it was identified that under current practice, the timing of payment (payment terms) of a revenue contract may subsequently affect the post-acquisition revenue recognized by the acquirer. To address this, the ASU required entities to apply Topic 606 to recognize and measure contract assets and contract liabilities in a business combination. Finally, the amendments in the ASU improve comparability after the business combination by providing consistent recognition and measurement guidance for revenue contracts with customers acquired in a business combination and revenue contracts with customers not acquired in a business combination. For public business entities, the amendments were effective for fiscal years beginning after December 31, 2022, including interim periods within those fiscal years. For all other entities, the amendments are effective for fiscal years beginning after December 31, 2023, including interim periods within those fiscal years. The amendments in this Update are applied prospectively to business combinations occurring on or after the effective date of the amendments. Early adoption of the amendments was permitted, including adoption in an interim period. An entity that early adopted in an interim period applied the amendments (1) retrospectively to all business combinations for which the acquisition date occurred on or after the beginning of the fiscal year that included the interim period or early application, and (2) prospectively to all business combinations that occurred on or after the date of initial application. The Corporation adopted this guidance on January 1, 2023, but adoption of the standard did not have any impact on the Corporation's financial statements or disclosures. FASB Accounting Standards Updates - No. 2022-02 - Financial Instruments - Credit Losses (Topic 326): Troubled Debt Restructurings and Vintage Disclosures Summary - The FASB issued ASU No. 2022-02, Financial Instruments—Credit Losses (Topic 326): Troubled Debt Restructurings and Vintage Disclosures , to improve the usefulness of information provided to investors about certain loan refinancings, restructurings, and writeoffs. Troubled Debt Restructurings ("TDR") by Creditors That Have Adopted CECL During the FASB’s post-implementation review of the credit losses standard, including a May 2021 roundtable, investors and other stakeholders questioned the relevance of the TDR designation and the usefulness of disclosures about those modifications. Some noted that measurement of expected losses under the CECL model already incorporated losses realized from restructurings that are TDRs and that relevant information for investors would be better conveyed through enhanced disclosures about certain modifications. The amendments in the new ASU eliminate the accounting guidance for TDRs by creditors that have adopted CECL while enhancing disclosure requirements for certain loan refinancings and restructurings by creditors made to borrowers experiencing financial difficulty. Vintage Disclosures - Gross Writeoffs The disclosure of gross writeoff information by year of origination was cited by numerous investors as an essential input to their analysis. To address this feedback, the amendments in the new ASU require that a public business entity disclose current-period gross writeoffs by year of origination for financing receivables and net investment in leases. For entities that have adopted the amendments in ASU 2016-13, the amendments in this Update were effective for fiscal years beginning after December 15, 2022, including interim periods within those fiscal years. The Corporation adopted this Update on January 1, 2023 and the new disclosures required in this Update are included in NOTE 4. LOANS AND ALLOWANCE of these Notes to Consolidated Condensed Financial Statements. 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. 2020-04 - Reference Rate Reform (Topic 848): Facilitation of the Effects of Reference Rate Reform on Financial Reporting Summary - The FASB issued ASU No. 2020-04 to provide temporary optional guidance to ease the potential burden in accounting for reference rate reform. LIBOR and other interbank offered rates are widely used benchmarks or reference rates in the United States and globally. Trillions of dollars in loans, derivatives, and other financial contracts reference LIBOR, the benchmark interest rate banks use to make short-term loans to each other. With global capital markets expected to move away from LIBOR and other interbank offered rates and move toward rates that are more observable or transaction based and less susceptible to manipulation, the FASB launched a broad project in late 2018 to address potential accounting challenges expected to arise from the transition. The new guidance provides optional expedients and exceptions for applying generally accepted accounting principles to contract modifications and hedging relationships, subject to meeting certain criteria, that reference LIBOR or another reference rate expected to be discontinued. The ASU is intended to help stakeholders during the global market-wide reference rate transition period. Originally, an entity could apply this ASU as of the beginning of an interim period that includes the March 12, 2020 issuance date of the ASU, through December 31, 2022. With the issuance of ASU 2022-06 - Reference Rate Reform (Topic 848): Deferral of the Sunset Date of Topic 848 , the sunset date for adoption of ASU 2020-04 was extended from December 31, 2022 to December 31, 2024. The Corporation expects to adopt the practical expedients included in this ASU in 2023 as it transitions its loans and other financial instruments to another reference rate. FASB Accounting Standards Updates - No. 2021-01 - Reference Rate Reform (Topic 848): Scope Summary - The FASB has published ASU 2021-01, Reference Rate Reform. ASU 2021-01 clarifies that certain optional expedients and exceptions in Topic 848 for contract modifications and hedge accounting apply to derivatives that are affected by the discounting transition. The ASU also amends the expedients and exceptions in Topic 848 to capture the incremental consequences of the scope clarification and to tailor the existing guidance to derivative instruments affected by the discounting transition. An entity may elect to apply the amendments in this Update on a full retrospective basis as of any date from the beginning of an interim period that includes or is subsequent to March 12, 2020, or on a prospective basis to new modifications from any date within an interim period that includes or is subsequent to the date of the issuance of a final Update, up to the date that financial statements are available to be issued. If an entity elects to apply any of the amendments in this Update for an eligible hedging relationship, any adjustments as a result of those elections must be reflected as of the date the entity applies the election. Originally, the amendments in this Update did not apply to contract modifications made after December 31, 2022, new hedging relationships entered into after December 31, 2022, and existing hedging relationships evaluated for effectiveness in periods after December 31, 2022, except for hedging relationships existing as of December 31, 2022, that apply certain optional expedients in which the accounting effects are recorded through the end of the hedging relationship (including periods after December 31, 2022). With the issuance of ASU 2022-06 - Reference Rate Reform (Topic 848): Deferral of the Sunset Date of Topic 848 , the sunset date for adoption of ASU 2021-01 was extended from December 31, 2022 to December 31, 2024. The Corporation expects to adopt the practical expedients included in this ASU in 2023 as it transitions its loans and other financial instruments to another reference rate. 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 , that 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 are effective for fiscal years beginning after December 15, 2023, including interim periods within those fiscal years. For all other entities, the amendments are 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 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 (Tables)

ACQUISITIONS (Tables)	3 Months Ended
	Mar. 31, 2023
Business Combination and Asset Acquisition [Abstract]
Schedule of Preliminary Valuations of the Fair Value of Assets Acquired and Liabilities Assumed	Under the acquisition method of accounting, the total purchase price is allocated to net tangible and intangible assets based on their current estimated fair values on the date of the acquisition. Based on valuations of the fair value of tangible and intangible assets acquired and liabilities assumed, which are based on assumptions that are subject to change based on the timing of the transaction, the purchase price for the Level One acquisition is detailed in the following table. Fair Value Cash and due from banks $ 217,104 Investment securities available for sale 370,071 Investment securities held to maturity 587 Loans held for sale 7,951 Loans 1,627,423 Allowance for credit losses - loans (16,599) Premises and equipment 11,848 Federal Home Loan Bank stock 11,688 Interest receivable 7,188 Cash surrender value of life insurance 30,143 Tax asset, deferred and receivable 16,223 Other assets 41,690 Deposits (1,930,790) Securities sold under repurchase agreements (1,521) Federal Home Loan Bank advances (160,043) Subordinated debentures (32,631) Interest payable (1,065) Other liabilities (42,813) Net tangible assets acquired 156,454 Other intangibles 18,642 Goodwill 166,617 Purchase price $ 341,713
Schedule of Pro Forma Financial Information of Consolidated Financial Statements Since the Acquisition Date	The results of operations of Level One have been included in the Corporation's consolidated financial statements since the acquisition date. The following schedule includes pro forma results for the year ended December 31, 2022 as if the Level One acquisition occurred as of the beginning of the period presented. 2022 Total revenue (net interest income plus other income) $ 654,313 Net income $ 221,631 Net income available to common stockholders $ 219,756 Earnings per common share: Basic $ 3.72 Diluted $ 3.70

INVESTMENT SECURITIES (Tables)

INVESTMENT SECURITIES (Tables)	3 Months Ended
	Mar. 31, 2023
Investments, Debt and Equity Securities [Abstract]
Summary of Amortized Cost, Gross Unrealized Gains and Losses, Gross Unrealized Losses and Approximate Fair Value of Investment Securities	The following table summarizes the amortized cost, gross unrealized gains and losses and approximate fair value of investment securities available for sale as of March 31, 2023 and December 31, 2022. Amortized Gross Unrealized Gross Unrealized Fair Available for sale at March 31, 2023 U.S. Treasury $ 2,114 $ — $ 32 $ 2,082 U.S. Government-sponsored agency securities 117,746 5 15,153 102,598 State and municipal 1,322,500 562 139,326 1,183,736 U.S. Government-sponsored mortgage-backed securities 584,576 — 90,971 493,605 Corporate obligations 12,991 — 804 12,187 Total available for sale $ 2,039,927 $ 567 $ 246,286 $ 1,794,208 Amortized Gross Unrealized Gross Unrealized Fair Available for sale at December 31, 2022 U.S. Treasury $ 2,501 $ — $ 42 $ 2,459 U.S. Government-sponsored agency securities 119,154 — 17,192 101,962 State and municipal 1,530,048 438 178,726 1,351,760 U.S. Government-sponsored mortgage-backed securities 608,630 1 100,358 508,273 Corporate obligations 13,014 — 807 12,207 Total available for sale $ 2,273,347 $ 439 $ 297,125 $ 1,976,661 The following table summarizes the amortized cost, gross unrealized gains and losses, approximate fair value and allowance for credit losses on investment securities held to maturity as of March 31, 2023 and December 31, 2022. Amortized Allowance for Credit Losses Net Carrying Amount Gross Unrealized Gross Unrealized Fair Held to maturity at March 31, 2023 U.S. Government-sponsored agency securities $ 388,273 $ — $ 388,273 $ — $ 61,813 $ 326,460 State and municipal 1,114,874 245 1,114,629 1,778 166,679 949,973 U.S. Government-sponsored mortgage-backed securities 758,779 — 758,779 — 102,068 656,711 Foreign investment 1,500 — 1,500 — 43 1,457 Total held to maturity $ 2,263,426 $ 245 $ 2,263,181 $ 1,778 $ 330,603 $ 1,934,601 Amortized Allowance for Credit Losses Net Carrying Amount Gross Unrealized Gross Unrealized Fair Held to maturity at December 31, 2022 U.S. Government-sponsored agency securities $ 392,246 $ — $ 392,246 $ — $ 69,147 $ 323,099 State and municipal 1,117,552 245 1,117,307 647 197,064 921,135 U.S. Government-sponsored mortgage-backed securities 776,074 — 776,074 — 113,915 662,159 Foreign investment 1,500 — 1,500 — 28 1,472 Total held to maturity $ 2,287,372 $ 245 $ 2,287,127 $ 647 $ 380,154 $ 1,907,865
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 March 31, 2023, aggregated by credit quality indicator. Held to Maturity State and municipal Other Total Credit Rating: Aaa $ 108,774 $ 70,583 $ 179,357 Aa1 156,209 — 156,209 Aa2 183,736 — 183,736 Aa3 135,167 — 135,167 A1 131,421 — 131,421 A2 10,170 — 10,170 A3 10,120 — 10,120 Non-rated 379,277 1,077,969 1,457,246 Total $ 1,114,874 $ 1,148,552 $ 2,263,426
Summary of Investment Securities in a Continuous Unrealized Loss Position	The following tables summarize, as of March 31, 2023 and December 31, 2022, 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 March 31, 2023 U.S. Treasury $ 737 $ 8 $ 957 $ 24 $ 1,694 $ 32 U.S. Government-sponsored agency securities 36,595 2,204 65,197 12,949 101,792 15,153 State and municipal 290,254 13,634 823,441 125,692 1,113,695 139,326 U.S. Government-sponsored mortgage-backed securities 54,013 2,801 439,588 88,170 493,601 90,971 Corporate obligations 11,253 708 904 96 12,157 804 Total investment securities available for sale $ 392,852 $ 19,355 $ 1,330,087 $ 226,931 $ 1,722,939 $ 246,286 Less than 12 Months 12 Months or Longer Total Fair Gross Fair Gross Fair Gross Investment securities available for sale at December 31, 2022 U.S. Treasury $ 2,459 $ 42 $ — $ — $ 2,459 $ 42 U.S. Government-sponsored agency securities 48,940 4,973 53,022 12,219 101,962 17,192 State and municipal 1,177,104 150,096 108,652 28,630 1,285,756 178,726 U.S. Government-sponsored mortgage-backed securities 182,700 16,910 325,455 83,448 508,155 100,358 Corporate obligations 12,176 807 — — 12,176 807 Total investment securities available for sale $ 1,423,379 $ 172,828 $ 487,129 $ 124,297 $ 1,910,508 $ 297,125 The following table summarizes 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 for the periods indicated. Gross Number of Securities Investment securities available for sale at March 31, 2023 U.S. Treasury $ 32 3 U.S. Government-sponsored agency securities 15,153 15 State and municipal 139,326 765 U.S. Government-sponsored mortgage-backed securities 90,971 173 Corporate obligations 804 10 Total investment securities available for sale $ 246,286 966 Gross Number of Securities Investment securities available for sale at December 31, 2022 U.S. Treasury $ 42 5 U.S. Government-sponsored agency securities 17,192 16 State and municipal 178,726 946 U.S. Government-sponsored mortgage-backed securities 100,358 177 Corporate obligations 807 10 Total investment securities available for sale $ 297,125 1,154
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. March 31, 2023 December 31, 2022 Investments available for sale reported at less than historical cost: Historical cost $ 1,969,225 $ 2,207,633 Fair value 1,722,939 1,910,508 Gross unrealized losses $ 246,286 $ 297,125 Percent of the Corporation's investments available for sale 96.0 % 96.7 %
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 March 31, 2023 and December 31, 2022, 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 March 31, 2023 Due in one year or less $ 1,861 $ 1,854 $ 12,168 $ 12,225 Due after one through five years 21,853 20,346 112,941 105,185 Due after five through ten years 118,743 113,564 120,969 114,725 Due after ten years 1,312,894 1,164,839 1,258,569 1,045,755 1,455,351 1,300,603 1,504,647 1,277,890 U.S. Government-sponsored mortgage-backed securities 584,576 493,605 758,779 656,711 Total investment securities $ 2,039,927 $ 1,794,208 $ 2,263,426 $ 1,934,601 Available for Sale Held to Maturity Amortized Cost Fair Value Amortized Cost Fair Value Maturity Distribution at December 31, 2022 Due in one year or less $ 2,822 $ 2,809 $ 13,697 $ 13,749 Due after one through five years 11,694 11,265 80,697 76,453 Due after five through ten years 169,729 161,211 147,078 135,027 Due after ten years 1,480,472 1,293,103 1,269,826 1,020,477 1,664,717 1,468,388 1,511,298 1,245,706 U.S. Government-sponsored mortgage-backed securities 608,630 508,273 776,074 662,159 Total investment securities $ 2,273,347 $ 1,976,661 $ 2,287,372 $ 1,907,865
Summary of Gross Gains and Losses on Sales and Redemptions of Available for Sale Securities	Gross gains and losses on the sales and redemptions of investment securities available for sale for the three months ended March 31, 2023 and 2022 are shown below. Three Months Ended 2023 2022 Sales and redemptions of investment securities available for sale: Gross gains $ 12 $ 578 Gross losses (1,583) (12) Net gains (losses) on sales and redemptions of investment securities available for sale $ (1,571) $ 566

LOANS AND ALLOWANCE (Tables)

LOANS AND ALLOWANCE (Tables)	3 Months Ended
	Mar. 31, 2023
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 for the periods indicated: March 31, 2023 December 31, 2022 Commercial and industrial loans $ 3,502,204 $ 3,437,126 Agricultural land, production and other loans to farmers 219,598 241,793 Real estate loans: Construction 960,979 835,582 Commercial real estate, non-owner occupied 2,375,410 2,407,475 Commercial real estate, owner occupied 1,244,117 1,246,528 Residential 2,185,943 2,096,655 Home equity 621,354 630,632 Individuals' loans for household and other personal expenditures 172,389 175,211 Public finance and other commercial loans 959,467 932,892 Loans $ 12,241,461 $ 12,003,894
Summary of Credit Quality of Loan Portfolio by Loan Class	The following tables summarize the risk grading of the Corporation’s loan portfolio by loan class and by year of origination for the years indicated. Consumer loans are not risk graded. For the purposes of this disclosure, the 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. March 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 $ 344,116 $ 833,832 $ 459,180 $ 118,142 $ 110,854 $ 80,036 $ 1,351,418 $ — $ 3,297,578 Special Mention 1,184 5,100 22,970 12,611 2,594 2,022 53,264 — 99,745 Substandard — 35,900 13,576 2,748 10,391 5,012 36,459 — 104,086 Doubtful — — 795 — — — — — 795 Total Commercial and industrial loans 345,300 874,832 496,521 133,501 123,839 87,070 1,441,141 — 3,502,204 Current period gross write-offs — 57 37 88 31 30 — — 243 Agricultural land, production and other loans to farmers Pass 12,568 42,153 35,465 34,244 14,954 30,246 47,301 — 216,931 Special Mention — 286 760 — — 885 — — 1,931 Substandard 37 170 — 462 — 67 — — 736 Total Agricultural land, production and other loans to farmers 12,605 42,609 36,225 34,706 14,954 31,198 47,301 — 219,598 Real estate loans: Construction Pass 177,799 317,261 295,533 111,333 930 3,162 17,785 — 923,803 Special Mention 15,625 14,014 — — — — — — 29,639 Substandard 17 2,795 4,725 — — — — — 7,537 Total Construction 193,441 334,070 300,258 111,333 930 3,162 17,785 — 960,979 Commercial real estate, non-owner occupied Pass 82,982 551,019 572,828 496,049 165,356 259,267 34,481 — 2,161,982 Special Mention 23,243 29,870 6,510 23,885 18,664 35,865 — — 138,037 Substandard 7,005 16,121 12,523 23,423 — 16,269 50 — 75,391 Total Commercial real estate, non-owner occupied 113,230 597,010 591,861 543,357 184,020 311,401 34,531 — 2,375,410 Current period gross write-offs — 2 — — — — — — 2 Commercial real estate, owner occupied Pass 53,588 240,722 306,558 309,989 114,099 122,322 31,628 — 1,178,906 Special Mention 63 17,766 2,692 5,623 732 3,502 4,076 — 34,454 Substandard 11,480 3,654 334 5,138 1,859 8,292 — — 30,757 Total Commercial real estate, owner occupied 65,131 262,142 309,584 320,750 116,690 134,116 35,704 — 1,244,117 Current period gross write-offs — — — — 2 — — — 2 Residential Pass 148,051 730,773 481,262 392,890 113,139 296,233 5,875 25 2,168,248 Special Mention 490 3,491 2,056 1,190 316 2,456 158 — 10,157 Substandard — 1,168 2,099 717 480 3,074 — — 7,538 Total Residential 148,541 735,432 485,417 394,797 113,935 301,763 6,033 25 2,185,943 Current period gross write-offs — 7 13 1 — 110 — — 131 Home equity Pass 6,244 41,482 71,558 14,219 1,529 6,052 471,404 2,006 614,494 Special Mention — 66 415 7 — 11 4,611 227 5,337 Substandard — — 78 — — 354 1,050 41 1,523 Total Home Equity 6,244 41,548 72,051 14,226 1,529 6,417 477,065 2,274 621,354 Current period gross write-offs — 18 25 2 20 169 — — 234 Individuals' loans for household and other personal expenditures Pass 16,204 60,965 39,063 11,318 4,409 8,397 30,980 — 171,336 Special Mention 3 259 117 42 8 23 461 128 1,041 Substandard — — — — — 12 — — 12 Total Individuals' loans for household and other personal expenditures 16,207 61,224 39,180 11,360 4,417 8,432 31,441 128 172,389 Current period gross write-offs — 191 114 37 13 102 — — 457 Public finance and other commercial loans Pass 13,114 214,727 210,600 159,678 97,254 242,322 21,772 — 959,467 Total Public finance and other commercial loans 13,114 214,727 210,600 159,678 97,254 242,322 21,772 — 959,467 Loans $ 913,813 $ 3,163,594 $ 2,541,697 $ 1,723,708 $ 657,568 $ 1,125,881 $ 2,112,773 $ 2,427 $ 12,241,461 Total current period gross charge-offs $ — $ 275 $ 189 $ 128 $ 66 $ 411 $ — $ — $ 1,069 December 31, 2022 Term Loans (amortized cost basis by origination year) Revolving loans amortized Revolving loans converted 2022 2021 2020 2019 2018 Prior cost basis to term Total Commercial and industrial loans Pass $ 1,064,687 $ 531,504 $ 141,985 $ 114,999 $ 43,136 $ 45,310 $ 1,302,562 $ 5,048 $ 3,249,231 Special Mention 2,164 18,005 11,900 5,727 1,012 2,181 27,702 150 68,841 Substandard 27,512 26,571 5,531 10,606 4,674 567 43,450 143 119,054 Total Commercial and industrial loans 1,094,363 576,080 159,416 131,332 48,822 48,058 1,373,714 5,341 3,437,126 Agricultural land, production and other loans to farmers Pass 44,446 36,299 35,791 15,296 3,752 28,910 73,402 — 237,896 Special Mention 286 784 — — 281 632 — — 1,983 Substandard 178 — 490 — 94 1,152 — — 1,914 Total Agricultural land, production and other loans to farmers 44,910 37,083 36,281 15,296 4,127 30,694 73,402 — 241,793 Real estate loans: Construction Pass 366,414 301,986 117,541 11,428 857 3,224 17,167 — 818,617 Special Mention 16,922 — — — — — — — 16,922 Substandard 31 — — — — 12 — — 43 Total Construction 383,367 301,986 117,541 11,428 857 3,236 17,167 — 835,582 Commercial real estate, non-owner occupied Pass 560,146 603,254 550,605 168,701 116,859 190,264 31,196 3,803 2,224,828 Special Mention 49,439 4,026 38,268 18,785 11,546 17,992 — — 140,056 Substandard 21,123 8,128 8,026 — 4,442 872 — — 42,591 Total Commercial real estate, non-owner occupied 630,708 615,408 596,899 187,486 132,847 209,128 31,196 3,803 2,407,475 Commercial real estate, owner occupied Pass 260,725 316,665 330,441 114,015 63,816 81,286 33,123 3,378 1,203,449 Special Mention 7,744 6,125 2,245 3,481 1,210 2,984 1,328 — 25,117 Substandard 3,124 1,214 2,376 1,608 2,920 6,720 — — 17,962 Total Commercial real estate, owner occupied 271,593 324,004 335,062 119,104 67,946 90,990 34,451 3,378 1,246,528 Residential Pass 758,161 489,301 401,353 114,420 77,768 229,812 5,365 46 2,076,226 Special Mention 2,839 2,924 1,972 513 396 2,588 34 — 11,266 Substandard 1,399 1,824 1,811 805 1,468 1,741 60 55 9,163 Total Residential 762,399 494,049 405,136 115,738 79,632 234,141 5,459 101 2,096,655 Home equity Pass 40,768 75,670 14,621 1,572 1,348 3,325 486,924 281 624,509 Special Mention — — — — 115 8 3,698 — 3,821 Substandard — 79 — — 65 60 2,098 — 2,302 Total Home Equity 40,768 75,749 14,621 1,572 1,528 3,393 492,720 281 630,632 Individuals' loans for household and other personal expenditures Pass 67,883 43,639 13,025 5,389 5,830 3,775 35,091 — 174,632 Special Mention 178 134 77 33 28 17 16 — 483 Substandard 1 — 3 — 84 8 — — 96 Total Individuals' loans for household and other personal expenditures 68,062 43,773 13,105 5,422 5,942 3,800 35,107 — 175,211 Public finance and other commercial loans Pass 187,125 212,702 165,019 98,687 43,760 204,719 20,880 — 932,892 Total Public finance and other commercial loans 187,125 212,702 165,019 98,687 43,760 204,719 20,880 — 932,892 Loans $ 3,483,295 $ 2,680,834 $ 1,843,080 $ 686,065 $ 385,461 $ 828,159 $ 2,084,096 $ 12,904 $ 12,003,894 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. Commercial and Industrial collateral dependent loans and related allowance increased $8.9 million and $5.6 million, respectively, for the three months ended March 31, 2023. The total increase in the collateral dependent balance was offset by a decrease in the commercial real estate, non-owner occupied segment of $3.6 million for the three months ended March 31, 2023. March 31, 2023 Commercial Real Estate Residential Real Estate Other Total Allowance on Collateral Dependent Loans Commercial and industrial loans $ — $ — $ 50,996 $ 50,996 $ 13,937 Real estate loans: Construction — 10 — 10 1 Commercial real estate, non-owner occupied 22,908 — — 22,908 1,656 Commercial real estate, owner occupied 6,396 — — 6,396 361 Residential — 1,588 — 1,588 253 Home equity — 283 — 283 42 Loans $ 29,304 $ 1,881 $ 50,996 $ 82,181 $ 16,250 December 31, 2022 Commercial Real Estate Residential Real Estate Other Total Allowance on Collateral Dependent Loans Commercial and industrial loans $ — $ — $ 42,101 $ 42,101 $ 8,367 Real estate loans: Construction — 10 — 10 1 Commercial real estate, non-owner occupied 26,534 — — 26,534 2,064 Commercial real estate, owner occupied 6,986 — — 6,986 776 Residential — 2,382 — 2,382 260 Home equity — 289 — 289 44 Loans $ 33,520 $ 2,681 $ 42,101 $ 78,302 $ 11,512
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, for the periods indicated: March 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 $ 3,480,761 $ 4,438 $ 9,995 $ 7,010 $ 3,502,204 $ 4,631 Agricultural land, production and other loans to farmers 219,571 — — 27 219,598 — Real estate loans: Construction 957,367 3,612 — — 960,979 — Commercial real estate, non-owner occupied 2,353,426 7,154 3,891 10,939 2,375,410 797 Commercial real estate, owner occupied 1,231,113 3,757 7,444 1,803 1,244,117 1,588 Residential 2,170,577 6,667 2,759 5,940 2,185,943 — Home equity 615,199 2,626 2,214 1,315 621,354 16 Individuals' loans for household and other personal expenditures 171,336 408 633 12 172,389 — Public finance and other commercial loans 959,258 209 — — 959,467 — Loans $ 12,158,608 $ 28,871 $ 26,936 $ 27,046 $ 12,241,461 $ 7,032 December 31, 2022 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 $ 3,429,314 $ 4,904 $ 434 $ 2,474 $ 3,437,126 $ 1,147 Agricultural land, production and other loans to farmers 241,739 — — 54 241,793 — Real estate loans: Construction 832,716 2,436 418 12 835,582 — Commercial real estate, non-owner occupied 2,395,495 5,946 881 5,153 2,407,475 264 Commercial real estate, owner occupied 1,241,714 4,495 — 319 1,246,528 — Residential 2,079,959 8,607 2,278 5,811 2,096,655 — Home equity 624,543 2,206 1,782 2,101 630,632 326 Individuals' loans for household and other personal expenditures 174,629 343 142 97 175,211 — Public finance and other commercial loans 932,778 114 — — 932,892 — Loans $ 11,952,887 $ 29,051 $ 5,935 $ 16,021 $ 12,003,894 $ 1,737
Summary of Non-Accrual Loans by Loan class	The following table summarizes the Corporation’s non-accrual loans by loan class for the periods indicated: March 31, 2023 December 31, 2022 Non-Accrual Loans Non-Accrual Loans with no Allowance for Credit Losses Non-Accrual Loans Non-Accrual Loans with no Allowance for Credit Losses Commercial and industrial loans $ 11,051 $ 856 $ 3,292 $ 481 Agricultural land, production and other loans to farmers 64 — 54 — Real estate loans: Construction — — 12 — Commercial real estate, non-owner occupied 16,550 1,830 19,374 280 Commercial real estate, owner occupied 2,926 2,236 3,550 2,784 Residential 14,154 — 13,685 702 Home equity 1,811 — 2,247 — Individuals' loans for household and other personal expenditures 20 — 110 — Loans $ 46,576 $ 4,922 $ 42,324 $ 4,247
Summary of Modified Loans	The following table presents the amortized cost basis of loans at March 31, 2023 that were both experiencing financial difficulty and modified during the three months ended March 31, 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. Loan Modifications Made to Borrowers Experiencing Financial Difficulty Term Extension Combination Interest Rate Reduction & Term Extension % of Total Class of Financing Receivable Commercial and industrial loans $ 9,224 $ — 0.26 % Agricultural land, production and other loans to farmers 37 — 0.02 % Real estate loans: Construction 17 — — % Commercial Real Estate, Non Owner Occupied 97 5,966 0.26 % Commercial Real Estate, Owner Occupied 10,822 82 0.88 % Total $ 20,197 $ 6,048 The following table presents the financial effect of the loan modifications presented above to borrowers experiencing financial difficulty for the three months ended March 31, 2023. Financial Effect of Loan Modifications Term Extension Combination Interest Rate Reduction & Term Extension Commercial and industrial loans Added a weighted average life of 4 months to the life of the loans, which reduced monthly payment amounts for the borrowers. Agricultural land, production and other loans to farmers Added a weighted average life of 60 months to the life of the loans, which reduced monthly payment amounts for the borrowers. Real estate loans: Construction Added a weighted average life of 24 months to the life of the loans, which reduced monthly payment amounts for the borrowers. Commercial Real Estate, Non Owner Occupied Added a weighted average life of 12 months to the life of the loans, which reduced monthly payment amounts for the borrowers. Reduced the weighted average contractual interest rate from 7.81 percent to 7.40 percent. Added a weighted average 41 months to the life of loans, which reduced monthly payment amounts for the borrowers. Commercial Real Estate, Owner Occupied Added a weighted average life of 9 months to the life of the loans, which reduced monthly payment amounts for the borrowers. Reduced the weighted average contractual interest rate from 10.25 percent to 6.61 percent. Added a weighted average 114 months to the life of loans, which reduced monthly payment amounts for the borrowers. The following table presents the amortized cost basis of loans that had a payment default and were modified during the three months ended March 31, 2023 due to the borrowers experiencing financial difficulty. At this time, all of the modifications are current. Payment Status Current Commercial and industrial loans $ 9,224 Agricultural land, production and other loans to farmers 37 Real estate loans: Construction 17 Commercial Real Estate, Non Owner Occupied 6,063 Commercial Real Estate, Owner Occupied 10,904 Total $ 26,245
Schedule of Purchased Credit Deteriorated Loans	The carrying amount of those loans is shown in the table below: Level One Purchase price of loans at acquisition $ 41,347 CECL Day 1 PCD ACL 16,599 Par value of acquired loans at acquisition $ 57,946
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 months ended March 31, 2023 and 2022: Three Months Ended March 31, 2023 Commercial Commercial Real Estate Construction Consumer & Residential Total Allowance for credit losses Balances, December 31, 2022 $ 102,216 $ 46,839 $ 28,955 $ 45,267 $ 223,277 Provision for credit losses (1,199) (583) (384) 2,166 — Recoveries on loans 530 56 — 258 844 Loans charged off (243) (4) — (822) (1,069) Balances, March 31, 2023 $ 101,304 $ 46,308 $ 28,571 $ 46,869 $ 223,052 Three Months Ended March 31, 2022 Commercial Commercial Real Estate Construction Consumer & Residential Total Allowance for credit losses Balances, December 31, 2021 $ 69,935 $ 60,665 $ 20,206 $ 44,591 $ 195,397 Provision for credit losses 7,571 (8,250) 554 125 — Recoveries on loans 139 707 — 206 1,052 Loans charged off (8) (122) — (335) (465) Balances, March 31, 2022 $ 77,637 $ 53,000 $ 20,760 $ 44,587 $ 195,984
Summary of Financial Instruments with Off-balance Sheet Risk	Financial instruments with off-balance sheet risk were as follows: March 31, 2023 December 31, 2022 Amounts of commitments: Loan commitments to extend credit $ 5,075,753 $ 4,950,724 Standby letters of credit $ 42,898 $ 40,784
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 March 31, 2023 and 2022: Three Months Ended Balances, December 31, 2022 $ 23,300 Provision for credit losses — Balances, March 31, 2023 $ 23,300 Three Months Ended Balances, December 31, 2021 $ 20,500 Provision for credit losses — Balances, March 31, 2022 $ 20,500

GOODWILL (Tables)

GOODWILL (Tables)	3 Months Ended
	Mar. 31, 2023
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Goodwill	2022 Balance, January 1 $ 545,385 Goodwill acquired 166,617 Balance, December 31 $ 712,002

OTHER INTANGIBLES (Tables)

OTHER INTANGIBLES (Tables)	3 Months Ended
	Mar. 31, 2023
Goodwill and Intangible Assets Disclosure [Abstract]
Summary of Core Deposit and Other Intangibles	The carrying basis and accumulated amortization of recognized core deposit intangibles and other intangibles are noted below. March 31, 2023 December 31, 2022 Gross carrying amount $ 123,285 $ 104,643 Other intangibles acquired — 18,642 Accumulated amortization (89,640) (87,443) Total core deposit and other intangibles $ 33,645 $ 35,842
Summary of Estimated Future Amortization Expense	Estimated future amortization expense is summarized as follows: Amortization Expense 2023 $ 6,547 2024 7,271 2025 6,028 2026 4,910 2027 3,603 After 2027 5,286 $ 33,645

DERIVATIVE FINANCIAL INSTRUME_2

DERIVATIVE FINANCIAL INSTRUMENTS (Tables)	3 Months Ended
	Mar. 31, 2023
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Summary of Fair Value of Derivative Financial Instruments and Classification on the Balance Sheet	The following table summarizes the Corporation's derivatives designated as hedges: Asset Derivatives Liability Derivatives March 31, 2023 December 31, 2022 March 31, 2023 December 31, 2022 Balance Fair Balance Fair Balance Fair Balance Fair Cash flow hedges: Interest rate swaps on borrowings Other Assets $ 112 Other Assets $ 164 Other Liabilities $ — Other Liabilities $ — The table below presents the fair value of the Corporation’s non-designated hedges, as well as their classification on the Balance Sheet, as of March 31, 2023, and December 31, 2022. March 31, 2023 December 31, 2022 Notional Amount Fair Value Notional Amount Fair Value Included in other assets: Interest rate swaps $ 1,279,225 $ 73,757 $ 1,184,866 $ 92,652 Forward contracts related to mortgage loans to be delivered for sale 8,356 305 14,406 188 Interest rate lock commitments 22,785 171 5,049 32 Included in other assets $ 1,310,366 $ 74,233 $ 1,204,321 $ 92,872 Included in other liabilities: Interest rate swaps $ 1,279,225 $ 73,757 $ 1,184,866 $ 92,652 Forward contracts related to mortgage loans to be delivered for sale 22,601 149 4,483 63 Interest rate lock commitments 2,195 8 7,549 55 Included in other liabilities $ 1,304,021 $ 73,914 $ 1,196,898 $ 92,770
Summary of Amount of Loss Recognized in Other Comprehensive Income (Loss)	The amount of gain (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 Gain (Loss) Recognized in Other Comprehensive Income (Loss) on Derivatives Three Months Ended March 31, 2023 March 31, 2022 Interest Rate Products $ (51) $ 303
Summary of Effect of Derivative Financial Instruments on the Income Statement	The amount of gain (loss) reclassified from other comprehensive income (loss) into income related to cash flow hedging relationships is included in the table below for the periods indicated. Derivatives Designated as Location of Gain (Loss) Amount of Gain (Loss) Reclassed from Other Comprehensive Income (Loss) into Income (Effective Portion) Three Months Ended Three Months Ended Interest rate contracts Interest Expense $ 1 $ (241) Derivatives Not Designated as Location of Gain (Loss) Amount of Gain (Loss) Three Months Ended Three Months Ended Forward contracts related to mortgage loans to be delivered for sale Net gains and fees on sales of loans $ (46) $ — Interest rate lock commitments Net gains and fees on sales of loans 227 — Total net gain/(loss) recognized in income $ 181 $ —

FAIR VALUES OF FINANCIAL INST_2

FAIR VALUES OF FINANCIAL INSTRUMENTS (Tables)	3 Months Ended
	Mar. 31, 2023
Fair Value Disclosures [Abstract]
Schedule 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 ASC 820-10 fair value hierarchy in which the fair value measurements fall at March 31, 2023, and December 31, 2022. Fair Value Measurements Using: March 31, 2023 Fair Value Quoted Prices in Active Markets for Identical Assets Significant Other Significant Available for sale securities: U.S. Treasury $ 2,082 $ 2,082 $ — $ — U.S. Government-sponsored agency securities 102,598 — 102,598 — State and municipal 1,183,736 — 1,180,309 3,427 U.S. Government-sponsored mortgage-backed securities 493,605 — 493,601 4 Corporate obligations 12,187 — 12,156 31 Derivative assets 74,345 — 74,345 — Derivative liabilities 73,914 — 73,914 — Fair Value Measurements Using: December 31, 2022 Fair Value Quoted Prices in Significant Other Observable Inputs Significant Available for sale securities: U.S. Treasury $ 2,459 $ 2,459 $ — $ — U.S. Government-sponsored agency securities 101,962 — 101,962 — State and municipal 1,351,760 — 1,348,356 3,404 U.S. Government-sponsored mortgage-backed securities 508,273 — 508,269 4 Corporate obligations 12,207 — 12,176 31 Derivative assets 93,036 — 93,036 — Derivative liabilities 92,770 — 92,770 —
Schedule 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 months ended March 31, 2023 and 2022. Available for Sale Securities Three Months Ended March 31, 2023 March 31, 2022 Balance at beginning of the period $ 3,439 $ 5,491 Included in other comprehensive income 114 (493) Purchases, issuances and settlements — 4,100 Principal payments (91) (186) Ending balance $ 3,462 $ 8,912
Schedule 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 non-recurring basis and recognized in the accompanying balance sheets, as well as the general classification of such instruments pursuant to the valuation hierarchy at March 31, 2023, and December 31, 2022. Fair Value Measurements Using March 31, 2023 Fair Value Quoted Prices in Significant Other Significant Unobservable Collateral dependent loans $ 51,757 $ — $ — $ 51,757 Fair Value Measurements Using December 31, 2022 Fair Value Quoted Prices in Significant Other Significant Unobservable Collateral dependent loans $ 55,290 $ — $ — $ 55,290
Schedule of Unobservable Inputs Used in Recurring and Nonrecurring Level 3 Fair Value Measurements Other than Goodwill	The following table presents quantitative information about unobservable inputs used in recurring and nonrecurring Level 3 fair value measurements, other than goodwill, at March 31, 2023 and December 31, 2022. March 31, 2023 Fair Value Valuation Technique Unobservable Inputs Range (Weighted-Average) State and municipal securities $ 3,427 Discounted cash flow Maturity/Call date 1 month to 15 years US Muni BQ curve A- to BBB Discount rate 3.1% - 4.4% Weighted-average coupon 3.4% Corporate obligations and U.S. Government-sponsored mortgage-backed securities $ 35 Discounted cash flow Risk free rate 3 month LIBOR plus premium for illiquidity (basis points) plus 200bps Weighted-average coupon 0% Collateral dependent loans $ 51,757 Collateral based measurements Discount to reflect current market conditions and ultimate collectability 0% - 10% Weighted-average discount by loan balance 1.5% December 31, 2022 Fair Value Valuation Technique Unobservable Inputs Range (Weighted-Average) State and municipal securities $ 3,404 Discounted cash flow Maturity/Call date 1 month to 15 years US Muni BQ curve A- to BBB Discount rate 0.4% - 4% Weighted-average coupon 3.4% Corporate obligations and U.S. Government-sponsored mortgage-backed securities $ 35 Discounted cash flow Risk free rate 3 month LIBOR plus premium for illiquidity (basis points) plus 200bps Weighted-average coupon 0% Collateral dependent loans $ 55,290 Collateral based measurements Discount to reflect current market conditions and ultimate collectability 0% - 10% Weighted-average discount by loan balance 1.1%
Schedule of Estimated Fair Values of Financial Instruments	The following table presents 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 March 31, 2023 and December 31, 2022. March 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 $ 125,818 $ 125,818 $ — $ — $ 125,818 Interest-bearing deposits 352,695 352,695 — — 352,695 Investment securities available for sale 1,794,208 2,082 1,788,664 3,462 1,794,208 Investment securities held to maturity 2,263,181 — 1,920,038 14,563 1,934,601 Loans held for sale 9,408 — 9,408 — 9,408 Loans, net 12,018,409 — — 11,573,561 11,573,561 Federal Home Loan Bank stock 41,878 — 41,878 — 41,878 Derivative assets 74,345 — 74,345 — 74,345 Interest receivable 85,515 — 85,515 — 85,515 Liabilities: Deposits $ 14,703,287 $ 12,921,842 $ 1,759,938 $ — 14,681,780 Borrowings: Federal funds purchased 20 — 20 — 20 Securities sold under repurchase agreements 179,067 — 179,051 — 179,051 Federal Home Loan Bank advances 823,577 — 819,690 — 819,690 Subordinated debentures and other borrowings 151,312 — 121,402 — 121,402 Derivative liabilities 73,914 — 73,914 — 73,914 Interest payable 11,979 — 11,979 — 11,979 December 31, 2022 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 $ 122,594 $ 122,594 $ — $ — $ 122,594 Interest-bearing deposits 126,061 126,061 — — 126,061 Investment securities available for sale 1,976,661 2,459 1,970,763 3,439 1,976,661 Investment securities held to maturity 2,287,127 — 1,893,271 14,594 1,907,865 Loans held for sale 9,094 — 9,094 — 9,094 Loans, net 11,780,617 — — 11,156,217 11,156,217 Federal Home Loan Bank stock 38,525 — 38,525 — 38,525 Derivative assets 93,036 — 93,036 — 93,036 Interest receivable 85,070 — 85,070 — 85,070 Liabilities: Deposits $ 14,382,745 $ 13,105,936 $ 1,251,017 $ — 14,356,953 Borrowings: Federal funds purchased 171,560 — 171,560 — 171,560 Securities sold under repurchase agreements 167,413 — 167,396 — 167,396 Federal Home Loan Bank advances 823,674 — 615,211 — 615,211 Subordinated debentures and other borrowings 151,298 — 122,102 — 122,102 Derivative liabilities 92,770 — 92,770 — 92,770 Interest payable 7,530 — 7,530 — 7,530

TRANSFERS ACCOUNTED FOR AS SE_2

TRANSFERS ACCOUNTED FOR AS SECURED BORROWINGS (Tables)	3 Months Ended
	Mar. 31, 2023
Transfers and Servicing [Abstract]
Schedule of Collateral Pledged for All Repurchase Agreements Accounted for as Secured Borrowings	The collateral pledged for all repurchase agreements that are accounted for as secured borrowings as of March 31, 2023 and December 31, 2022 were: March 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 $ 179,067 $ — $ — $ — $ 179,067 December 31, 2022 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 $ 167,413 $ — $ — $ — $ 167,413

ACCUMULATED OTHER COMPREHENSI_2

ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (Tables)	3 Months Ended
	Mar. 31, 2023
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 income (loss), net of tax, as of March 31, 2023 and 2022: Accumulated Other Comprehensive Income (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, 2022 $ (234,495) $ 130 $ (4,786) $ (239,151) Other comprehensive income (loss) before reclassifications 39,038 (41) — 38,997 Amounts reclassified from accumulated other comprehensive income 1,241 (1) — 1,240 Period change 40,279 (42) — 40,237 Balance at March 31, 2023 $ (194,216) $ 88 $ (4,786) $ (198,914) Balance at December 31, 2021 $ 59,774 $ (660) $ (4,001) $ 55,113 Other comprehensive income (loss) before reclassifications (139,487) 239 — (139,248) Amounts reclassified from accumulated other comprehensive income (447) 190 — (257) Period change (139,934) 429 — (139,505) Balance at March 31, 2022 $ (80,160) $ (231) $ (4,001) $ (84,392)
Summary of Reclassification out of Accumulated Other Comprehensive Income (Loss)	The following table presents the reclassification adjustments out of accumulated other comprehensive income (loss) that were included in net income in the Consolidated Condensed Statements of Income for the three months ended March 31, 2023 and 2022. Amount Reclassified from Accumulated Other Comprehensive Income (Loss) For the Three Months Ended March 31, Details about Accumulated Other Comprehensive Income (Loss) Components 2023 2022 Affected Line Item in the Statements of Income Unrealized gains (losses) on available for sale securities (1) Realized securities gains (losses) reclassified into income $ (1,571) $ 566 Other income - net realized gains (losses) on sales of available for sale securities Related income tax benefit (expense) 330 (119) Income tax expense $ (1,241) $ 447 Unrealized gains (losses) on cash flow hedges (2) Interest rate contracts $ 1 $ (241) Interest expense - subordinated debentures and term loans Related income tax benefit — 51 Income tax expense $ 1 $ (190) Total reclassifications for the period, net of tax $ (1,240) $ 257 (1) For additional detail related to unrealized gains (losses) on available for sale securities and related amounts reclassified from accumulated other comprehensive income 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 income see NOTE 7. DERIVATIVE FINANCIAL INSTRUMENTS of these Notes to Consolidated Condensed Financial Statements.

SHARE-BASED COMPENSATION (Table

SHARE-BASED COMPENSATION (Tables)	3 Months Ended
	Mar. 31, 2023
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 2023 2022 Stock and ESPP Options Pre-tax compensation expense $ 30 $ 29 Income tax expense (benefit) (57) (17) Stock and ESPP option expense, net of income taxes $ (27) $ 12 Restricted Stock Awards Pre-tax compensation expense $ 1,167 $ 1,071 Income tax expense (benefit) (255) (226) Restricted stock awards expense, net of income taxes $ 912 $ 845 Total Share-Based Compensation Pre-tax compensation expense $ 1,197 $ 1,100 Income tax expense (benefit) (312) (243) Total share-based compensation expense, net of income taxes $ 885 $ 857
Summary of Stock Option Activity Under Stock Option Plans	Stock option activity under the Corporation's stock option plans as of March 31, 2023 and changes during the three months ended March 31, 2023, were as follows: Number of Weighted-Average Exercise Price Weighted Average Remaining Aggregate Outstanding at January 1, 2023 155,100 $ 18.89 Exercised (58,620) $ 17.23 Outstanding March 31, 2023 96,480 $ 19.90 2.51 $ 1,259,244 Vested and Expected to Vest at March 31, 2023 96,480 $ 19.90 2.51 $ 1,259,244 Exercisable at March 31, 2023 96,480 $ 19.90 2.51 $ 1,259,244
Summary of Unvested RSAs Outstanding	The following table summarizes information on unvested RSAs outstanding as of March 31, 2023: Number of Shares Weighted-Average Unvested RSAs at January 1, 2023 416,705 $ 36.97 Granted 12,146 $ 34.41 Vested (7,573) $ 26.47 Forfeited (1,200) $ 36.31 Unvested RSAs at March 31, 2023 420,078 $ 37.09

INCOME TAX (Tables)

INCOME TAX (Tables)	3 Months Ended
	Mar. 31, 2023
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 statements of income for the three months ended March 31, 2023 and 2022: Three Months Ended 2023 2022 Reconciliation of Federal Statutory to Actual Tax Expense: Federal statutory income tax at 21% $ 15,833 $ 11,729 Tax-exempt interest income (4,867) (4,520) Share-based compensation (61) (12) Tax-exempt earnings and gains on life insurance (270) (354) Tax credits (92) (87) State Income Tax 700 495 Other 74 15 Actual Tax Expense $ 11,317 $ 7,266 Effective Tax Rate 15.0 % 13.0 %

NET INCOME PER COMMON SHARE (Ta

NET INCOME PER COMMON SHARE (Tables)	3 Months Ended
	Mar. 31, 2023
Earnings Per Share [Abstract]
Summary of Reconciliation of Basic and Diluted Net Income Per Share	The following table reconciles basic and diluted net income per common share for the three months ended March 31, 2023 and 2022. Three Months Ended March 31, 2023 2022 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 $ 63,610 59,216,198 $ 1.07 $ 48,586 53,412,762 $ 0.91 Effect of potentially dilutive stock options and restricted stock awards 224,530 203,106 Diluted net income per common share $ 63,610 59,440,728 $ 1.07 $ 48,586 53,615,868 $ 0.91

ACQUISITIONS - Narrative (Detai

ACQUISITIONS - Narrative (Details) $ / shares in Units, $ in Thousands		12 Months Ended
	Apr. 01, 2022 USD ($) banking_center $ / shares shares	Dec. 31, 2022 USD ($) $ / shares shares	Mar. 31, 2023 $ / shares shares
Preferred Class B
Business Acquisition [Line Items]
Entity listing, depository receipt ratio	0.01
Preferred Class B | Level One
Business Acquisition [Line Items]
Entity listing, depository receipt ratio	0.01
Series A Preferred Stock
Business Acquisition [Line Items]
Liquidation value per share (in dollars per share) | $ / shares		$ 2,500	$ 2,500
Preferred Stock, issued (in shares) | shares		10,000	10,000
Level One
Business Acquisition [Line Items]
Percentage of interest acquired	100%
Number of banking centers | banking_center	17
Exchange ratio	0.7167
Cash payment per share (in dollars per share) | $ / shares	$ 10.17
Cash paid in acquisition	$ 79,300
Other intangibles	18,642
Operating revenue		$ 56,900
Provision expense related to CECL Day 1 adjustments		16,800
Acquisition-related expenses		$ 16,500
Level One | Other Intangible Assets
Business Acquisition [Line Items]
Other intangibles	18,600
Level One | Core Deposits
Business Acquisition [Line Items]
Other intangibles	$ 17,200
Estimated life	10 years
Level One | Non-compete
Business Acquisition [Line Items]
Other intangibles	$ 1,400
Estimated life	2 years
Level One | Common Stock
Business Acquisition [Line Items]
Issuance of common stock related to acquisitions (in shares) | shares	5,600,000
Level One | Series A Preferred Stock
Business Acquisition [Line Items]
Dividend rate %	7.50%
Liquidation value per share (in dollars per share) | $ / shares	$ 2,500
Preferred Stock, issued (in shares) | shares	10,000

ACQUISITIONS - Assets Acquired

ACQUISITIONS - Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022	Apr. 01, 2022	Dec. 31, 2021
Business Acquisition [Line Items]
Goodwill	$ 712,002	$ 712,002		$ 545,385
Level One
Business Acquisition [Line Items]
Cash and due from banks			$ 217,104
Investment securities available for sale			370,071
Investment securities held to maturity			587
Loans held for sale			7,951
Loans			1,627,423
Allowance for credit losses - loans			(16,599)
Premises and equipment			11,848
Federal Home Loan Bank stock			11,688
Interest receivable			7,188
Cash surrender value of life insurance			30,143
Tax asset, deferred and receivable			16,223
Other assets			41,690
Deposits			(1,930,790)
Securities sold under repurchase agreements			(1,521)
Federal Home Loan Bank advances			(160,043)
Subordinated debentures			(32,631)
Interest payable			(1,065)
Other liabilities			(42,813)
Net tangible assets acquired			156,454
Other intangibles			18,642
Goodwill			166,617
Purchase price			$ 341,713

ACQUISITIONS - Pro Forma Financ

ACQUISITIONS - Pro Forma Financial Information (Details) - Level One $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2022 USD ($) $ / shares
Business Acquisition [Line Items]
Total revenue (net interest income plus other income)	$ 654,313
Net income	221,631
Net income available to common stockholders	$ 219,756
Earnings per common share:
Basic (in dollars per share) | $ / shares	$ 3.72
Diluted (in dollars per share) | $ / shares	$ 3.70

INVESTMENT SECURITIES - Amortiz

INVESTMENT SECURITIES - Amortized Cost and Approximate Fair Value of Securities (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Available for sale securities
Amortized Cost	$ 2,039,927	$ 2,273,347
Gross Unrealized Gains	567	439
Gross Unrealized Losses	246,286	297,125
Fair Value	1,794,208	1,976,661
Held to maturity securities
Amortized Cost	2,263,426	2,287,372
Allowance for Credit Losses	245	245
Net Carrying Amount	2,263,181	2,287,127
Gross Unrealized Gains	1,778	647
Gross Unrealized Losses	330,603	380,154
Fair Value	1,934,601	1,907,865
U.S. Treasury
Available for sale securities
Amortized Cost	2,114	2,501
Gross Unrealized Gains	0	0
Gross Unrealized Losses	32	42
Fair Value	2,082	2,459
U.S. Government-sponsored agency securities
Available for sale securities
Amortized Cost	117,746	119,154
Gross Unrealized Gains	5	0
Gross Unrealized Losses	15,153	17,192
Fair Value	102,598	101,962
Held to maturity securities
Amortized Cost	388,273	392,246
Allowance for Credit Losses	0	0
Net Carrying Amount	388,273	392,246
Gross Unrealized Gains	0	0
Gross Unrealized Losses	61,813	69,147
Fair Value	326,460	323,099
State and municipal
Available for sale securities
Amortized Cost	1,322,500	1,530,048
Gross Unrealized Gains	562	438
Gross Unrealized Losses	139,326	178,726
Fair Value	1,183,736	1,351,760
Held to maturity securities
Amortized Cost	1,114,874	1,117,552
Allowance for Credit Losses	245	245
Net Carrying Amount	1,114,629	1,117,307
Gross Unrealized Gains	1,778	647
Gross Unrealized Losses	166,679	197,064
Fair Value	949,973	921,135
U.S. Government-sponsored mortgage-backed securities
Available for sale securities
Amortized Cost	584,576	608,630
Gross Unrealized Gains	0	1
Gross Unrealized Losses	90,971	100,358
Fair Value	493,605	508,273
Held to maturity securities
Amortized Cost	758,779	776,074
Allowance for Credit Losses	0	0
Net Carrying Amount	758,779	776,074
Gross Unrealized Gains	0	0
Gross Unrealized Losses	102,068	113,915
Fair Value	656,711	662,159
Corporate obligations
Available for sale securities
Amortized Cost	12,991	13,014
Gross Unrealized Gains	0	0
Gross Unrealized Losses	804	807
Fair Value	12,187	12,207
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	43	28
Fair Value	$ 1,457	$ 1,472

INVESTMENT SECURITIES - Narrati

INVESTMENT SECURITIES - Narrative (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022	Jan. 01, 2021
Schedule Of Available For Sale Securities And Held To Maturity Securities [Line Items]
Accrued interest on investment securities	$ 24,600	$ 29,500
Allowance for credit losses	245	245
Carrying value of securities pledged as collateral	1,900,000	941,300
Securities sold under repurchase agreements	205,600	196,700
State and municipal
Schedule Of Available For Sale Securities And Held To Maturity Securities [Line Items]
Allowance for credit losses	$ 245	$ 245
State and municipal | Cumulative Effect, Period of Adoption, Adjustment
Schedule Of Available For Sale Securities And Held To Maturity Securities [Line Items]
Allowance for credit losses			$ 245

INVESTMENT SECURITIES - Amort_2

INVESTMENT SECURITIES - Amortized Cost of Investment Securities Held to Maturity (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Schedule of Held-to-maturity Securities [Line Items]
Total	$ 2,263,426	$ 2,287,372
Aaa
Schedule of Held-to-maturity Securities [Line Items]
Total	179,357
Aa1
Schedule of Held-to-maturity Securities [Line Items]
Total	156,209
Aa2
Schedule of Held-to-maturity Securities [Line Items]
Total	183,736
Aa3
Schedule of Held-to-maturity Securities [Line Items]
Total	135,167
A1
Schedule of Held-to-maturity Securities [Line Items]
Total	131,421
A2
Schedule of Held-to-maturity Securities [Line Items]
Total	10,170
A3
Schedule of Held-to-maturity Securities [Line Items]
Total	10,120
Non-rated
Schedule of Held-to-maturity Securities [Line Items]
Total	1,457,246
State and municipal
Schedule of Held-to-maturity Securities [Line Items]
Total	1,114,874	$ 1,117,552
State and municipal | Aaa
Schedule of Held-to-maturity Securities [Line Items]
Total	108,774
State and municipal | Aa1
Schedule of Held-to-maturity Securities [Line Items]
Total	156,209
State and municipal | Aa2
Schedule of Held-to-maturity Securities [Line Items]
Total	183,736
State and municipal | Aa3
Schedule of Held-to-maturity Securities [Line Items]
Total	135,167
State and municipal | A1
Schedule of Held-to-maturity Securities [Line Items]
Total	131,421
State and municipal | A2
Schedule of Held-to-maturity Securities [Line Items]
Total	10,170
State and municipal | A3
Schedule of Held-to-maturity Securities [Line Items]
Total	10,120
State and municipal | Non-rated
Schedule of Held-to-maturity Securities [Line Items]
Total	379,277
Other
Schedule of Held-to-maturity Securities [Line Items]
Total	1,148,552
Other | Aaa
Schedule of Held-to-maturity Securities [Line Items]
Total	70,583
Other | Aa1
Schedule of Held-to-maturity Securities [Line Items]
Total	0
Other | Aa2
Schedule of Held-to-maturity Securities [Line Items]
Total	0
Other | Aa3
Schedule of Held-to-maturity Securities [Line Items]
Total	0
Other | A1
Schedule of Held-to-maturity Securities [Line Items]
Total	0
Other | A2
Schedule of Held-to-maturity Securities [Line Items]
Total	0
Other | A3
Schedule of Held-to-maturity Securities [Line Items]
Total	0
Other | Non-rated
Schedule of Held-to-maturity Securities [Line Items]
Total	$ 1,077,969

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	Mar. 31, 2023 USD ($) security	Dec. 31, 2022 USD ($) security
Fair Value
Less than 12 Months	$ 392,852	$ 1,423,379
12 Months or Longer	1,330,087	487,129
Total	1,722,939	1,910,508
Gross Unrealized Losses
Less than 12 Months	19,355	172,828
12 Months or Longer	226,931	124,297
Total	$ 246,286	$ 297,125
Number of Securities | security	966	1,154
U.S. Treasury
Fair Value
Less than 12 Months	$ 737	$ 2,459
12 Months or Longer	957	0
Total	1,694	2,459
Gross Unrealized Losses
Less than 12 Months	8	42
12 Months or Longer	24	0
Total	$ 32	$ 42
Number of Securities | security	3	5
U.S. Government-sponsored agency securities
Fair Value
Less than 12 Months	$ 36,595	$ 48,940
12 Months or Longer	65,197	53,022
Total	101,792	101,962
Gross Unrealized Losses
Less than 12 Months	2,204	4,973
12 Months or Longer	12,949	12,219
Total	$ 15,153	$ 17,192
Number of Securities | security	15	16
State and municipal
Fair Value
Less than 12 Months	$ 290,254	$ 1,177,104
12 Months or Longer	823,441	108,652
Total	1,113,695	1,285,756
Gross Unrealized Losses
Less than 12 Months	13,634	150,096
12 Months or Longer	125,692	28,630
Total	$ 139,326	$ 178,726
Number of Securities | security	765	946
U.S. Government-sponsored mortgage-backed securities
Fair Value
Less than 12 Months	$ 54,013	$ 182,700
12 Months or Longer	439,588	325,455
Total	493,601	508,155
Gross Unrealized Losses
Less than 12 Months	2,801	16,910
12 Months or Longer	88,170	83,448
Total	$ 90,971	$ 100,358
Number of Securities | security	173	177
Corporate obligations
Fair Value
Less than 12 Months	$ 11,253	$ 12,176
12 Months or Longer	904	0
Total	12,157	12,176
Gross Unrealized Losses
Less than 12 Months	708	807
12 Months or Longer	96	0
Total	$ 804	$ 807
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	Mar. 31, 2023	Dec. 31, 2022
Schedule of Investments [Line Items]
Historical cost	$ 1,969,225	$ 2,207,633
Fair value	1,722,939	1,910,508
Gross unrealized losses	$ 246,286	$ 297,125
Percent of the Corporation's investments available for sale	96%	96.70%

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	Mar. 31, 2023	Dec. 31, 2022
Amortized Cost
Due in one year or less	$ 1,861	$ 2,822
Due after one through five years	21,853	11,694
Due after five through ten years	118,743	169,729
Due after ten years	1,312,894	1,480,472
Total debt securities with a single maturity date	1,455,351	1,664,717
Total investment securities	2,039,927	2,273,347
Fair Value
Due in one year or less	1,854	2,809
Due after one through five years	20,346	11,265
Due after five through ten years	113,564	161,211
Due after ten years	1,164,839	1,293,103
Total debt securities with a single maturity date	1,300,603	1,468,388
Total investment securities	1,794,208	1,976,661
Amortized Cost
Due in one year or less	12,168	13,697
Due after one through five years	112,941	80,697
Due after five through ten years	120,969	147,078
Due after ten years	1,258,569	1,269,826
Total debt securities with a single maturity date	1,504,647	1,511,298
Amortized Cost	2,263,426	2,287,372
Fair Value
Due in one year or less	12,225	13,749
Due after one through five years	105,185	76,453
Due after five through ten years	114,725	135,027
Due after ten years	1,045,755	1,020,477
Total debt securities with a single maturity date	1,277,890	1,245,706
Investment securities held to maturity	1,934,601	1,907,865
U.S. Government-sponsored mortgage-backed securities
Amortized Cost
U.S. Government-sponsored mortgage-backed securities	584,576	608,630
Fair Value
U.S. Government-sponsored mortgage-backed securities	493,605	508,273
Total investment securities	493,605	508,273
Amortized Cost
U.S. Government-sponsored mortgage-backed securities	758,779	776,074
Amortized Cost	758,779	776,074
Fair Value
U.S. Government-sponsored mortgage-backed securities	656,711	662,159
Investment securities held to maturity	$ 656,711	$ 662,159

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
	Mar. 31, 2023	Mar. 31, 2022
Sales and redemptions of investment securities available for sale:
Gross gains	$ 12	$ 578
Gross losses	(1,583)	(12)
Net gains (losses) on sales and redemptions of investment securities available for sale	$ (1,571)	$ 566

LOANS AND ALLOWANCE - Narrative

LOANS AND ALLOWANCE - Narrative (Details) - USD ($)		3 Months Ended
	Apr. 01, 2022	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022	Dec. 31, 2021	Jan. 01, 2021
Receivables [Abstract]
Loans held for sale		$ 9,408,000		$ 9,094,000
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans		12,241,461,000		12,003,894,000
Loans with an origination year of 2021		3,163,594,000		2,680,834,000
Loans with an origination year of 2020		2,541,697,000		1,843,080,000
Interest income recognized on non-accrual loans		0	$ 0
Allowance for credit losses increased		$ 225,000
Net recoveries			587,000
Standby letters of credit usual term		2 years
Off-balance sheet commitments		$ 23,300,000	20,500,000	23,300,000	$ 20,500,000
Provision for credit losses		0	$ 0
Cumulative Effect, Period of Adoption, Adjustment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Off-balance sheet commitments						$ 20,500,000
Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans		82,900,000		51,000,000
Increase (decrease) in past due loans		31,900,000
60-89 Days Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans		26,936,000		5,935,000
Increase (decrease) in past due loans		(21,000,000)
90 Days or More Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans		27,046,000		16,021,000
Increase (decrease) in past due loans		11,000,000
Financial Asset, Equal to or Greater than 90 Days Past Due Still Accruing
Accounts, Notes, Loans and Financing Receivable [Line Items]
Increase (decrease) in past due loans		5,300,000
Commercial and industrial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans		3,502,204,000		3,437,126,000
Loans with an origination year of 2021		874,832,000		576,080,000
Loans with an origination year of 2020		496,521,000		159,416,000
Commercial and industrial loans | Allowance on Collateral Dependent Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Increase (decrease) in individually evaluated for impairment		8,900,000
Net recoveries		5,600,000
Commercial and industrial loans | 60-89 Days Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans		9,995,000		434,000
Increase (decrease) in past due loans		(9,600,000)
Commercial and industrial loans | 90 Days or More Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans		7,010,000		2,474,000
Increase (decrease) in past due loans		(4,500,000)
Commercial real estate, non-owner occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans		2,375,410,000		2,407,475,000
Loans with an origination year of 2021		597,010,000		615,408,000
Loans with an origination year of 2020		591,861,000		596,899,000
Commercial real estate, non-owner occupied | Allowance on Collateral Dependent Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Increase (decrease) in individually evaluated for impairment		3,600,000
Commercial real estate, non-owner occupied | 60-89 Days Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans		3,891,000		881,000
Increase (decrease) in past due loans		(3,000,000)
Commercial real estate, non-owner occupied | 90 Days or More Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans		10,939,000		5,153,000
Increase (decrease) in past due loans		(5,800,000)
Commercial real estate, owner occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans		1,244,117,000		1,246,528,000
Loans with an origination year of 2021		262,142,000		324,004,000
Loans with an origination year of 2020		309,584,000		335,062,000
Commercial real estate, owner occupied | 60-89 Days Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans		7,444,000		0
Increase (decrease) in past due loans		(7,400,000)
Commercial real estate, owner occupied | 90 Days or More Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans		1,803,000		319,000
Residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans		2,185,943,000		2,096,655,000
Loans with an origination year of 2021		735,432,000		494,049,000
Loans with an origination year of 2020		485,417,000		405,136,000
Residential | 60-89 Days Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans		2,759,000		2,278,000
Residential | 90 Days or More Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans		$ 5,940,000		$ 5,811,000
Level One
Accounts, Notes, Loans and Financing Receivable [Line Items]
Provision for credit losses	$ 2,800,000

LOANS AND ALLOWANCE - Compositi

LOANS AND ALLOWANCE - Composition of Loan Portfolio by Loan Class (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	$ 12,241,461	$ 12,003,894
Commercial and industrial loans
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	3,502,204	3,437,126
Agricultural land, production and other loans to farmers
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	219,598	241,793
Construction
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	960,979	835,582
Commercial real estate, non-owner occupied
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	2,375,410	2,407,475
Commercial real estate, owner occupied
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	1,244,117	1,246,528
Residential
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	2,185,943	2,096,655
Home equity
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	621,354	630,632
Individuals' loans for household and other personal expenditures
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	172,389	175,211
Public finance and other commercial loans
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	$ 959,467	$ 932,892

LOANS AND ALLOWANCE - Risk Grad

LOANS AND ALLOWANCE - Risk Grading of Loan Portfolio by Loan Class (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Dec. 31, 2022
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current fiscal year	$ 913,813	$ 3,483,295
Fiscal year before current fiscal year	3,163,594	2,680,834
Two years before current fiscal year	2,541,697	1,843,080
Three years before current fiscal year	1,723,708	686,065
Four years before current fiscal year	657,568	385,461
Prior	1,125,881	828,159
Revolving loans amortized cost basis	2,112,773	2,084,096
Revolving loans converted to term	2,427	12,904
Total	12,241,461	12,003,894
Commercial and industrial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current fiscal year	345,300	1,094,363
Current fiscal year, writeoff	0
Fiscal year before current fiscal year	874,832	576,080
Fiscal year before current fiscal year, writeoff	57
Two years before current fiscal year	496,521	159,416
Two years before current fiscal year, writeoff	37
Three years before current fiscal year	133,501	131,332
Three years before current fiscal year, writeoff	88
Four years before current fiscal year	123,839	48,822
Four years before current fiscal year, writeoff	31
Prior	87,070	48,058
Prior, writeoff	30
Revolving loans amortized cost basis	1,441,141	1,373,714
Revolving loans amortized cost basis, writeoff	0
Revolving loans converted to term	0	5,341
Revolving loans converted to term, writeoff	0
Total	3,502,204	3,437,126
Total, writeoff	243
Commercial and industrial loans | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current fiscal year	344,116	1,064,687
Fiscal year before current fiscal year	833,832	531,504
Two years before current fiscal year	459,180	141,985
Three years before current fiscal year	118,142	114,999
Four years before current fiscal year	110,854	43,136
Prior	80,036	45,310
Revolving loans amortized cost basis	1,351,418	1,302,562
Revolving loans converted to term	0	5,048
Total	3,297,578	3,249,231
Commercial and industrial loans | Special Mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current fiscal year	1,184	2,164
Fiscal year before current fiscal year	5,100	18,005
Two years before current fiscal year	22,970	11,900
Three years before current fiscal year	12,611	5,727
Four years before current fiscal year	2,594	1,012
Prior	2,022	2,181
Revolving loans amortized cost basis	53,264	27,702
Revolving loans converted to term	0	150
Total	99,745	68,841
Commercial and industrial loans | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current fiscal year	0	27,512
Fiscal year before current fiscal year	35,900	26,571
Two years before current fiscal year	13,576	5,531
Three years before current fiscal year	2,748	10,606
Four years before current fiscal year	10,391	4,674
Prior	5,012	567
Revolving loans amortized cost basis	36,459	43,450
Revolving loans converted to term	0	143
Total	104,086	119,054
Commercial and industrial loans | Doubtful
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current fiscal year	0
Fiscal year before current fiscal year	0
Two years before current fiscal year	795
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	795
Agricultural land, production and other loans to farmers
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current fiscal year	12,605	44,910
Fiscal year before current fiscal year	42,609	37,083
Two years before current fiscal year	36,225	36,281
Three years before current fiscal year	34,706	15,296
Four years before current fiscal year	14,954	4,127
Prior	31,198	30,694
Revolving loans amortized cost basis	47,301	73,402
Revolving loans converted to term	0	0
Total	219,598	241,793
Agricultural land, production and other loans to farmers | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current fiscal year	12,568	44,446
Fiscal year before current fiscal year	42,153	36,299
Two years before current fiscal year	35,465	35,791
Three years before current fiscal year	34,244	15,296
Four years before current fiscal year	14,954	3,752
Prior	30,246	28,910
Revolving loans amortized cost basis	47,301	73,402
Revolving loans converted to term	0	0
Total	216,931	237,896
Agricultural land, production and other loans to farmers | Special Mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current fiscal year	0	286
Fiscal year before current fiscal year	286	784
Two years before current fiscal year	760	0
Three years before current fiscal year	0	0
Four years before current fiscal year	0	281
Prior	885	632
Revolving loans amortized cost basis	0	0
Revolving loans converted to term	0	0
Total	1,931	1,983
Agricultural land, production and other loans to farmers | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current fiscal year	37	178
Fiscal year before current fiscal year	170	0
Two years before current fiscal year	0	490
Three years before current fiscal year	462	0
Four years before current fiscal year	0	94
Prior	67	1,152
Revolving loans amortized cost basis	0	0
Revolving loans converted to term	0	0
Total	736	1,914
Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current fiscal year	193,441	383,367
Fiscal year before current fiscal year	334,070	301,986
Two years before current fiscal year	300,258	117,541
Three years before current fiscal year	111,333	11,428
Four years before current fiscal year	930	857
Prior	3,162	3,236
Revolving loans amortized cost basis	17,785	17,167
Revolving loans converted to term	0	0
Total	960,979	835,582
Construction | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current fiscal year	177,799	366,414
Fiscal year before current fiscal year	317,261	301,986
Two years before current fiscal year	295,533	117,541
Three years before current fiscal year	111,333	11,428
Four years before current fiscal year	930	857
Prior	3,162	3,224
Revolving loans amortized cost basis	17,785	17,167
Revolving loans converted to term	0	0
Total	923,803	818,617
Construction | Special Mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current fiscal year	15,625	16,922
Fiscal year before current fiscal year	14,014	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	0
Revolving loans converted to term	0	0
Total	29,639	16,922
Construction | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current fiscal year	17	31
Fiscal year before current fiscal year	2,795	0
Two years before current fiscal year	4,725	0
Three years before current fiscal year	0	0
Four years before current fiscal year	0	0
Prior	0	12
Revolving loans amortized cost basis	0	0
Revolving loans converted to term	0	0
Total	7,537	43
Commercial real estate, non-owner occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current fiscal year	113,230	630,708
Current fiscal year, writeoff	0
Fiscal year before current fiscal year	597,010	615,408
Fiscal year before current fiscal year, writeoff	2
Two years before current fiscal year	591,861	596,899
Two years before current fiscal year, writeoff	0
Three years before current fiscal year	543,357	187,486
Three years before current fiscal year, writeoff	0
Four years before current fiscal year	184,020	132,847
Four years before current fiscal year, writeoff	0
Prior	311,401	209,128
Prior, writeoff	0
Revolving loans amortized cost basis	34,531	31,196
Revolving loans amortized cost basis, writeoff	0
Revolving loans converted to term	0	3,803
Revolving loans converted to term, writeoff	0
Total	2,375,410	2,407,475
Total, writeoff	2
Commercial real estate, non-owner occupied | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current fiscal year	82,982	560,146
Fiscal year before current fiscal year	551,019	603,254
Two years before current fiscal year	572,828	550,605
Three years before current fiscal year	496,049	168,701
Four years before current fiscal year	165,356	116,859
Prior	259,267	190,264
Revolving loans amortized cost basis	34,481	31,196
Revolving loans converted to term	0	3,803
Total	2,161,982	2,224,828
Commercial real estate, non-owner occupied | Special Mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current fiscal year	23,243	49,439
Fiscal year before current fiscal year	29,870	4,026
Two years before current fiscal year	6,510	38,268
Three years before current fiscal year	23,885	18,785
Four years before current fiscal year	18,664	11,546
Prior	35,865	17,992
Revolving loans amortized cost basis	0	0
Revolving loans converted to term	0	0
Total	138,037	140,056
Commercial real estate, non-owner occupied | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current fiscal year	7,005	21,123
Fiscal year before current fiscal year	16,121	8,128
Two years before current fiscal year	12,523	8,026
Three years before current fiscal year	23,423	0
Four years before current fiscal year	0	4,442
Prior	16,269	872
Revolving loans amortized cost basis	50	0
Revolving loans converted to term	0	0
Total	75,391	42,591
Commercial real estate, owner occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current fiscal year	65,131	271,593
Current fiscal year, writeoff	0
Fiscal year before current fiscal year	262,142	324,004
Fiscal year before current fiscal year, writeoff	0
Two years before current fiscal year	309,584	335,062
Two years before current fiscal year, writeoff	0
Three years before current fiscal year	320,750	119,104
Three years before current fiscal year, writeoff	0
Four years before current fiscal year	116,690	67,946
Four years before current fiscal year, writeoff	2
Prior	134,116	90,990
Prior, writeoff	0
Revolving loans amortized cost basis	35,704	34,451
Revolving loans amortized cost basis, writeoff	0
Revolving loans converted to term	0	3,378
Revolving loans converted to term, writeoff	0
Total	1,244,117	1,246,528
Total, writeoff	2
Commercial real estate, owner occupied | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current fiscal year	53,588	260,725
Fiscal year before current fiscal year	240,722	316,665
Two years before current fiscal year	306,558	330,441
Three years before current fiscal year	309,989	114,015
Four years before current fiscal year	114,099	63,816
Prior	122,322	81,286
Revolving loans amortized cost basis	31,628	33,123
Revolving loans converted to term	0	3,378
Total	1,178,906	1,203,449
Commercial real estate, owner occupied | Special Mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current fiscal year	63	7,744
Fiscal year before current fiscal year	17,766	6,125
Two years before current fiscal year	2,692	2,245
Three years before current fiscal year	5,623	3,481
Four years before current fiscal year	732	1,210
Prior	3,502	2,984
Revolving loans amortized cost basis	4,076	1,328
Revolving loans converted to term	0	0
Total	34,454	25,117
Commercial real estate, owner occupied | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current fiscal year	11,480	3,124
Fiscal year before current fiscal year	3,654	1,214
Two years before current fiscal year	334	2,376
Three years before current fiscal year	5,138	1,608
Four years before current fiscal year	1,859	2,920
Prior	8,292	6,720
Revolving loans amortized cost basis	0	0
Revolving loans converted to term	0	0
Total	30,757	17,962
Residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current fiscal year	148,541	762,399
Current fiscal year, writeoff	0
Fiscal year before current fiscal year	735,432	494,049
Fiscal year before current fiscal year, writeoff	7
Two years before current fiscal year	485,417	405,136
Two years before current fiscal year, writeoff	13
Three years before current fiscal year	394,797	115,738
Three years before current fiscal year, writeoff	1
Four years before current fiscal year	113,935	79,632
Four years before current fiscal year, writeoff	0
Prior	301,763	234,141
Prior, writeoff	110
Revolving loans amortized cost basis	6,033	5,459
Revolving loans amortized cost basis, writeoff	0
Revolving loans converted to term	25	101
Revolving loans converted to term, writeoff	0
Total	2,185,943	2,096,655
Total, writeoff	131
Residential | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current fiscal year	148,051	758,161
Fiscal year before current fiscal year	730,773	489,301
Two years before current fiscal year	481,262	401,353
Three years before current fiscal year	392,890	114,420
Four years before current fiscal year	113,139	77,768
Prior	296,233	229,812
Revolving loans amortized cost basis	5,875	5,365
Revolving loans converted to term	25	46
Total	2,168,248	2,076,226
Residential | Special Mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current fiscal year	490	2,839
Fiscal year before current fiscal year	3,491	2,924
Two years before current fiscal year	2,056	1,972
Three years before current fiscal year	1,190	513
Four years before current fiscal year	316	396
Prior	2,456	2,588
Revolving loans amortized cost basis	158	34
Revolving loans converted to term	0	0
Total	10,157	11,266
Residential | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current fiscal year	0	1,399
Fiscal year before current fiscal year	1,168	1,824
Two years before current fiscal year	2,099	1,811
Three years before current fiscal year	717	805
Four years before current fiscal year	480	1,468
Prior	3,074	1,741
Revolving loans amortized cost basis	0	60
Revolving loans converted to term	0	55
Total	7,538	9,163
Home equity
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current fiscal year	6,244	40,768
Current fiscal year, writeoff	0
Fiscal year before current fiscal year	41,548	75,749
Fiscal year before current fiscal year, writeoff	18
Two years before current fiscal year	72,051	14,621
Two years before current fiscal year, writeoff	25
Three years before current fiscal year	14,226	1,572
Three years before current fiscal year, writeoff	2
Four years before current fiscal year	1,529	1,528
Four years before current fiscal year, writeoff	20
Prior	6,417	3,393
Prior, writeoff	169
Revolving loans amortized cost basis	477,065	492,720
Revolving loans amortized cost basis, writeoff	0
Revolving loans converted to term	2,274	281
Revolving loans converted to term, writeoff	0
Total	621,354	630,632
Total, writeoff	234
Home equity | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current fiscal year	6,244	40,768
Fiscal year before current fiscal year	41,482	75,670
Two years before current fiscal year	71,558	14,621
Three years before current fiscal year	14,219	1,572
Four years before current fiscal year	1,529	1,348
Prior	6,052	3,325
Revolving loans amortized cost basis	471,404	486,924
Revolving loans converted to term	2,006	281
Total	614,494	624,509
Home equity | Special Mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current fiscal year	0	0
Fiscal year before current fiscal year	66	0
Two years before current fiscal year	415	0
Three years before current fiscal year	7	0
Four years before current fiscal year	0	115
Prior	11	8
Revolving loans amortized cost basis	4,611	3,698
Revolving loans converted to term	227	0
Total	5,337	3,821
Home equity | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current fiscal year	0	0
Fiscal year before current fiscal year	0	79
Two years before current fiscal year	78	0
Three years before current fiscal year	0	0
Four years before current fiscal year	0	65
Prior	354	60
Revolving loans amortized cost basis	1,050	2,098
Revolving loans converted to term	41	0
Total	1,523	2,302
Individuals' loans for household and other personal expenditures
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current fiscal year	16,207	68,062
Current fiscal year, writeoff	0
Fiscal year before current fiscal year	61,224	43,773
Fiscal year before current fiscal year, writeoff	191
Two years before current fiscal year	39,180	13,105
Two years before current fiscal year, writeoff	114
Three years before current fiscal year	11,360	5,422
Three years before current fiscal year, writeoff	37
Four years before current fiscal year	4,417	5,942
Four years before current fiscal year, writeoff	13
Prior	8,432	3,800
Prior, writeoff	102
Revolving loans amortized cost basis	31,441	35,107
Revolving loans amortized cost basis, writeoff	0
Revolving loans converted to term	128	0
Revolving loans converted to term, writeoff	0
Total	172,389	175,211
Total, writeoff	457
Individuals' loans for household and other personal expenditures | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current fiscal year	16,204	67,883
Fiscal year before current fiscal year	60,965	43,639
Two years before current fiscal year	39,063	13,025
Three years before current fiscal year	11,318	5,389
Four years before current fiscal year	4,409	5,830
Prior	8,397	3,775
Revolving loans amortized cost basis	30,980	35,091
Revolving loans converted to term	0	0
Total	171,336	174,632
Individuals' loans for household and other personal expenditures | Special Mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current fiscal year	3	178
Fiscal year before current fiscal year	259	134
Two years before current fiscal year	117	77
Three years before current fiscal year	42	33
Four years before current fiscal year	8	28
Prior	23	17
Revolving loans amortized cost basis	461	16
Revolving loans converted to term	128	0
Total	1,041	483
Individuals' loans for household and other personal expenditures | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current fiscal year	0	1
Fiscal year before current fiscal year	0	0
Two years before current fiscal year	0	3
Three years before current fiscal year	0	0
Four years before current fiscal year	0	84
Prior	12	8
Revolving loans amortized cost basis	0	0
Revolving loans converted to term	0	0
Total	12	96
Public finance and other commercial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current fiscal year	13,114	187,125
Current fiscal year, writeoff	0
Fiscal year before current fiscal year	214,727	212,702
Fiscal year before current fiscal year, writeoff	275
Two years before current fiscal year	210,600	165,019
Two years before current fiscal year, writeoff	189
Three years before current fiscal year	159,678	98,687
Three years before current fiscal year, writeoff	128
Four years before current fiscal year	97,254	43,760
Four years before current fiscal year, writeoff	66
Prior	242,322	204,719
Prior, writeoff	411
Revolving loans amortized cost basis	21,772	20,880
Revolving loans amortized cost basis, writeoff	0
Revolving loans converted to term	0	0
Revolving loans converted to term, writeoff	0
Total	959,467	932,892
Total, writeoff	1,069
Public finance and other commercial loans | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current fiscal year	13,114	187,125
Fiscal year before current fiscal year	214,727	212,702
Two years before current fiscal year	210,600	165,019
Three years before current fiscal year	159,678	98,687
Four years before current fiscal year	97,254	43,760
Prior	242,322	204,719
Revolving loans amortized cost basis	21,772	20,880
Revolving loans converted to term	0	0
Total	$ 959,467	$ 932,892

LOANS AND ALLOWANCE - Past Due

LOANS AND ALLOWANCE - Past Due Aging of Loan Portfolio by Loan Class (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Dec. 31, 2022
Financing Receivable, Past Due [Line Items]
Loans	$ 12,241,461	$ 12,003,894
Loans > 90 Days or More Past Due And Accruing	7,032	1,737
Current
Financing Receivable, Past Due [Line Items]
Loans	12,158,608	11,952,887
30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	28,871	29,051
60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	26,936	5,935
Increase (decrease) in past due loans	21,000
90 Days or More Past Due
Financing Receivable, Past Due [Line Items]
Loans	27,046	16,021
Increase (decrease) in past due loans	(11,000)
Commercial and industrial loans
Financing Receivable, Past Due [Line Items]
Loans	3,502,204	3,437,126
Loans > 90 Days or More Past Due And Accruing	4,631	1,147
Commercial and industrial loans | Current
Financing Receivable, Past Due [Line Items]
Loans	3,480,761	3,429,314
Commercial and industrial loans | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	4,438	4,904
Commercial and industrial loans | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	9,995	434
Increase (decrease) in past due loans	9,600
Commercial and industrial loans | 90 Days or More Past Due
Financing Receivable, Past Due [Line Items]
Loans	7,010	2,474
Increase (decrease) in past due loans	4,500
Agricultural land, production and other loans to farmers
Financing Receivable, Past Due [Line Items]
Loans	219,598	241,793
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	219,571	241,739
Agricultural land, production and other loans to farmers | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	0	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	27	54
Construction
Financing Receivable, Past Due [Line Items]
Loans	960,979	835,582
Loans > 90 Days or More Past Due And Accruing	0	0
Construction | Current
Financing Receivable, Past Due [Line Items]
Loans	957,367	832,716
Construction | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	3,612	2,436
Construction | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	0	418
Construction | 90 Days or More Past Due
Financing Receivable, Past Due [Line Items]
Loans	0	12
Commercial real estate, non-owner occupied
Financing Receivable, Past Due [Line Items]
Loans	2,375,410	2,407,475
Loans > 90 Days or More Past Due And Accruing	797	264
Commercial real estate, non-owner occupied | Current
Financing Receivable, Past Due [Line Items]
Loans	2,353,426	2,395,495
Commercial real estate, non-owner occupied | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	7,154	5,946
Commercial real estate, non-owner occupied | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	3,891	881
Increase (decrease) in past due loans	3,000
Commercial real estate, non-owner occupied | 90 Days or More Past Due
Financing Receivable, Past Due [Line Items]
Loans	10,939	5,153
Increase (decrease) in past due loans	5,800
Commercial real estate, owner occupied
Financing Receivable, Past Due [Line Items]
Loans	1,244,117	1,246,528
Loans > 90 Days or More Past Due And Accruing	1,588	0
Commercial real estate, owner occupied | Current
Financing Receivable, Past Due [Line Items]
Loans	1,231,113	1,241,714
Commercial real estate, owner occupied | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	3,757	4,495
Commercial real estate, owner occupied | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	7,444	0
Increase (decrease) in past due loans	7,400
Commercial real estate, owner occupied | 90 Days or More Past Due
Financing Receivable, Past Due [Line Items]
Loans	1,803	319
Residential
Financing Receivable, Past Due [Line Items]
Loans	2,185,943	2,096,655
Loans > 90 Days or More Past Due And Accruing	0	0
Residential | Current
Financing Receivable, Past Due [Line Items]
Loans	2,170,577	2,079,959
Residential | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	6,667	8,607
Residential | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	2,759	2,278
Residential | 90 Days or More Past Due
Financing Receivable, Past Due [Line Items]
Loans	5,940	5,811
Home equity
Financing Receivable, Past Due [Line Items]
Loans	621,354	630,632
Loans > 90 Days or More Past Due And Accruing	16	326
Home equity | Current
Financing Receivable, Past Due [Line Items]
Loans	615,199	624,543
Home equity | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	2,626	2,206
Home equity | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	2,214	1,782
Home equity | 90 Days or More Past Due
Financing Receivable, Past Due [Line Items]
Loans	1,315	2,101
Individuals' loans for household and other personal expenditures
Financing Receivable, Past Due [Line Items]
Loans	172,389	175,211
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	171,336	174,629
Individuals' loans for household and other personal expenditures | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	408	343
Individuals' loans for household and other personal expenditures | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	633	142
Individuals' loans for household and other personal expenditures | 90 Days or More Past Due
Financing Receivable, Past Due [Line Items]
Loans	12	97
Public finance and other commercial loans
Financing Receivable, Past Due [Line Items]
Loans	959,467	932,892
Loans > 90 Days or More Past Due And Accruing	0	0
Public finance and other commercial loans | Current
Financing Receivable, Past Due [Line Items]
Loans	959,258	932,778
Public finance and other commercial loans | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	209	114
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	$ 0

LOANS AND ALLOWANCE - Non-Accru

LOANS AND ALLOWANCE - Non-Accrual Loans by Loan Class (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Financing Receivable, Past Due [Line Items]
Non-Accrual Loans	$ 46,576	$ 42,324
Non-Accrual Loans with no Allowance for Credit Losses	4,922	4,247
Commercial and industrial loans
Financing Receivable, Past Due [Line Items]
Non-Accrual Loans	11,051	3,292
Non-Accrual Loans with no Allowance for Credit Losses	856	481
Agricultural land, production and other loans to farmers
Financing Receivable, Past Due [Line Items]
Non-Accrual Loans	64	54
Non-Accrual Loans with no Allowance for Credit Losses	0	0
Construction
Financing Receivable, Past Due [Line Items]
Non-Accrual Loans	0	12
Non-Accrual Loans with no Allowance for Credit Losses	0	0
Commercial real estate, non-owner occupied
Financing Receivable, Past Due [Line Items]
Non-Accrual Loans	16,550	19,374
Non-Accrual Loans with no Allowance for Credit Losses	1,830	280
Commercial real estate, owner occupied
Financing Receivable, Past Due [Line Items]
Non-Accrual Loans	2,926	3,550
Non-Accrual Loans with no Allowance for Credit Losses	2,236	2,784
Residential
Financing Receivable, Past Due [Line Items]
Non-Accrual Loans	14,154	13,685
Non-Accrual Loans with no Allowance for Credit Losses	0	702
Home equity
Financing Receivable, Past Due [Line Items]
Non-Accrual Loans	1,811	2,247
Non-Accrual Loans with no Allowance for Credit Losses	0	0
Individuals' loans for household and other personal expenditures
Financing Receivable, Past Due [Line Items]
Non-Accrual Loans	20	110
Non-Accrual Loans with no Allowance for Credit Losses	$ 0	$ 0

LOANS AND ALLOWANCE - Amortized

LOANS AND ALLOWANCE - Amortized Cost Basis of Collateral Dependent Loans (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Dec. 31, 2022	Mar. 31, 2022	Dec. 31, 2021
Financing Receivable, Allowance for Credit Loss [Line Items]
Individually evaluated for impairment	$ 82,181	$ 78,302
Allowance on Collateral Dependent Loans	223,052	223,277	$ 195,984	$ 195,397
Commercial and industrial loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Individually evaluated for impairment	50,996	42,101
Construction
Financing Receivable, Allowance for Credit Loss [Line Items]
Individually evaluated for impairment	10	10
Commercial real estate, non-owner occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
Individually evaluated for impairment	22,908	26,534
Commercial real estate, owner occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
Individually evaluated for impairment	6,396	6,986
Residential
Financing Receivable, Allowance for Credit Loss [Line Items]
Individually evaluated for impairment	1,588	2,382
Home equity
Financing Receivable, Allowance for Credit Loss [Line Items]
Individually evaluated for impairment	283	289
Commercial Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Individually evaluated for impairment	29,304	33,520
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	22,908	26,534
Commercial Real Estate | Commercial real estate, owner occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
Individually evaluated for impairment	6,396	6,986
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	1,881	2,681
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	10	10
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	1,588	2,382
Residential Real Estate | Home equity
Financing Receivable, Allowance for Credit Loss [Line Items]
Individually evaluated for impairment	283	289
Other
Financing Receivable, Allowance for Credit Loss [Line Items]
Individually evaluated for impairment	50,996	42,101
Other | Commercial and industrial loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Individually evaluated for impairment	50,996	42,101
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
Allowance on Collateral Dependent Loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance on Collateral Dependent Loans	16,250	11,512
Allowance on Collateral Dependent Loans | Commercial and industrial loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Increase (decrease) in individually evaluated for impairment	8,900
Allowance on Collateral Dependent Loans	13,937	8,367
Allowance on Collateral Dependent Loans | Construction
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance on Collateral Dependent Loans	1	1
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	3,600
Allowance on Collateral Dependent Loans	1,656	2,064
Allowance on Collateral Dependent Loans | Commercial real estate, owner occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance on Collateral Dependent Loans	361	776
Allowance on Collateral Dependent Loans | Residential
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance on Collateral Dependent Loans	253	260
Allowance on Collateral Dependent Loans | Home equity
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance on Collateral Dependent Loans	$ 42	$ 44

LOANS AND ALLOWANCE - Troubled

LOANS AND ALLOWANCE - Troubled Debt Restructurings by Modification Type (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2023 USD ($)
Term Extension
Accounts, Notes, Loans and Financing Receivable [Line Items]
Combination Interest Rate Reduction & Term Extension	$ 20,197
Combination Interest Rate Reduction & Term Extension
Accounts, Notes, Loans and Financing Receivable [Line Items]
Combination Interest Rate Reduction & Term Extension	$ 6,048
Commercial and industrial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
% of Total Class of Financing Receivable	0.26%
Commercial and industrial loans | Term Extension
Accounts, Notes, Loans and Financing Receivable [Line Items]
Combination Interest Rate Reduction & Term Extension	$ 9,224
Term Extension	4 months
Commercial and industrial loans | Combination Interest Rate Reduction & Term Extension
Accounts, Notes, Loans and Financing Receivable [Line Items]
Combination Interest Rate Reduction & Term Extension	$ 0
Agricultural land, production and other loans to farmers
Accounts, Notes, Loans and Financing Receivable [Line Items]
% of Total Class of Financing Receivable	0.02%
Agricultural land, production and other loans to farmers | Term Extension
Accounts, Notes, Loans and Financing Receivable [Line Items]
Combination Interest Rate Reduction & Term Extension	$ 37
Term Extension	60 months
Agricultural land, production and other loans to farmers | Combination Interest Rate Reduction & Term Extension
Accounts, Notes, Loans and Financing Receivable [Line Items]
Combination Interest Rate Reduction & Term Extension	$ 0
Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
% of Total Class of Financing Receivable	0%
Construction | Term Extension
Accounts, Notes, Loans and Financing Receivable [Line Items]
Combination Interest Rate Reduction & Term Extension	$ 17
Term Extension	24 months
Construction | Combination Interest Rate Reduction & Term Extension
Accounts, Notes, Loans and Financing Receivable [Line Items]
Combination Interest Rate Reduction & Term Extension	$ 0
Commercial real estate, non-owner occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
% of Total Class of Financing Receivable	0.26%
Commercial real estate, non-owner occupied | Term Extension
Accounts, Notes, Loans and Financing Receivable [Line Items]
Combination Interest Rate Reduction & Term Extension	$ 97
Term Extension	12 months
Commercial real estate, non-owner occupied | Combination Interest Rate Reduction & Term Extension
Accounts, Notes, Loans and Financing Receivable [Line Items]
Combination Interest Rate Reduction & Term Extension	$ 5,966
Commercial real estate, non-owner occupied | Extended Maturity and Interest Rate Reduction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term Extension	41 months
Commercial real estate, non-owner occupied | Extended Maturity and Interest Rate Reduction | Minimum
Accounts, Notes, Loans and Financing Receivable [Line Items]
Reduced the weighted average contractual interest rate	7.81%
Commercial real estate, non-owner occupied | Extended Maturity and Interest Rate Reduction | Maximum
Accounts, Notes, Loans and Financing Receivable [Line Items]
Reduced the weighted average contractual interest rate	7.40%
Commercial real estate, owner occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
% of Total Class of Financing Receivable	0.88%
Commercial real estate, owner occupied | Term Extension
Accounts, Notes, Loans and Financing Receivable [Line Items]
Combination Interest Rate Reduction & Term Extension	$ 10,822
Term Extension	9 months
Commercial real estate, owner occupied | Combination Interest Rate Reduction & Term Extension
Accounts, Notes, Loans and Financing Receivable [Line Items]
Combination Interest Rate Reduction & Term Extension	$ 82
Commercial real estate, owner occupied | Extended Maturity and Interest Rate Reduction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term Extension	114 months
Commercial real estate, owner occupied | Extended Maturity and Interest Rate Reduction | Minimum
Accounts, Notes, Loans and Financing Receivable [Line Items]
Reduced the weighted average contractual interest rate	10.25%
Commercial real estate, owner occupied | Extended Maturity and Interest Rate Reduction | Maximum
Accounts, Notes, Loans and Financing Receivable [Line Items]
Reduced the weighted average contractual interest rate	6.61%

LOANS AND ALLOWANCE - Payment S

LOANS AND ALLOWANCE - Payment Status (Details) $ in Thousands	Mar. 31, 2023 USD ($)
Financing Receivable, Troubled Debt Restructuring [Line Items]
Payment status current	$ 26,245
Commercial and industrial loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Payment status current	9,224
Agricultural land, production and other loans to farmers
Financing Receivable, Troubled Debt Restructuring [Line Items]
Payment status current	37
Construction
Financing Receivable, Troubled Debt Restructuring [Line Items]
Payment status current	17
Commercial real estate, non-owner occupied
Financing Receivable, Troubled Debt Restructuring [Line Items]
Payment status current	6,063
Commercial real estate, owner occupied
Financing Receivable, Troubled Debt Restructuring [Line Items]
Payment status current	$ 10,904

LOANS AND ALLOWANCE - Purchased

LOANS AND ALLOWANCE - Purchased With Credit Deterioration (Details) $ in Thousands	Apr. 01, 2022 USD ($)
Receivables [Abstract]
Purchase price of loans at acquisition	$ 41,347
CECL Day 1 PCD ACL	16,599
Par value of acquired loans at acquisition	$ 57,946

LOANS AND ALLOWANCE - Changes i

LOANS AND ALLOWANCE - Changes in Allowance for Loan Losses by Loan Segment (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	$ 223,277	$ 195,397
Provision for credit losses	0	0
Recoveries on loans	844	1,052
Loans charged off	(1,069)	(465)
Ending balance	223,052	195,984
Commercial
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	102,216	69,935
Provision for credit losses	(1,199)	7,571
Recoveries on loans	530	139
Loans charged off	(243)	(8)
Ending balance	101,304	77,637
Commercial Real Estate
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	46,839	60,665
Provision for credit losses	(583)	(8,250)
Recoveries on loans	56	707
Loans charged off	(4)	(122)
Ending balance	46,308	53,000
Construction
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	28,955	20,206
Provision for credit losses	(384)	554
Recoveries on loans	0	0
Loans charged off	0	0
Ending balance	28,571	20,760
Consumer & Residential
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	45,267	44,591
Provision for credit losses	2,166	125
Recoveries on loans	258	206
Loans charged off	(822)	(335)
Ending balance	$ 46,869	$ 44,587

LOANS AND ALLOWANCE - Amounts o

LOANS AND ALLOWANCE - Amounts of Commitments (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Loan commitments to extend credit
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Amounts of commitments	$ 5,075,753	$ 4,950,724
Standby letters of credit
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Amounts of commitments	$ 42,898	$ 40,784

LOANS AND ALLOWANCE - Allowance

LOANS AND ALLOWANCE - Allowance for Credit Losses, Off-balance Sheet (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Beginning balance	$ 23,300	$ 20,500
Provision for credit losses	0	0
Ending balance	$ 23,300	$ 20,500

GOODWILL - Narrative (Details)

GOODWILL - Narrative (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022	Apr. 01, 2022	Dec. 31, 2021
Goodwill [Line Items]
Goodwill	$ 712,002	$ 712,002		$ 545,385
Level One
Goodwill [Line Items]
Goodwill			$ 166,617

GOODWILL - Goodwill (Details)

GOODWILL - Goodwill (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2022 USD ($)
Goodwill [Roll Forward]
Beginning balance	$ 545,385
Goodwill acquired	166,617
Ending balance	$ 712,002

OTHER INTANGIBLES - Narrative (

OTHER INTANGIBLES - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Apr. 01, 2022
Indefinite-lived Intangible Assets [Line Items]
Intangible asset amortization	$ 2,197	$ 1,366
Minimum
Indefinite-lived Intangible Assets [Line Items]
Useful life of core deposit intangibles and other intangibles	2 years
Maximum
Indefinite-lived Intangible Assets [Line Items]
Useful life of core deposit intangibles and other intangibles	10 years
Level One
Indefinite-lived Intangible Assets [Line Items]
Other intangibles			$ 18,642
Level One | Core Deposits
Indefinite-lived Intangible Assets [Line Items]
Other intangibles			17,200
Level One | Non-compete
Indefinite-lived Intangible Assets [Line Items]
Other intangibles			$ 1,400

OTHER INTANGIBLES - Core Deposi

OTHER INTANGIBLES - Core Deposit Intangibles (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2023	Dec. 31, 2022
Goodwill and Intangible Assets Disclosure [Abstract]
Gross carrying amount	$ 123,285	$ 104,643
Other intangibles acquired	0	18,642
Accumulated amortization	(89,640)	(87,443)
Total core deposit and other intangibles	$ 33,645	$ 35,842

OTHER INTANGIBLES - Estimated F

OTHER INTANGIBLES - Estimated Future Amortization Expense (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Amortization Expense
2023	$ 6,547
2024	7,271
2025	6,028
2026	4,910
2027	3,603
After 2027	5,286
Total core deposit and other intangibles	$ 33,645	$ 35,842

DERIVATIVE FINANCIAL INSTRUME_3

DERIVATIVE FINANCIAL INSTRUMENTS - Narrative (Details)	3 Months Ended
	Mar. 31, 2023 USD ($) loan derivative
Derivative [Line Items]
Termination value of derivatives in a net liability position	$ 2,500,000
Derivative collateral posted	0
Derivatives Designated as Hedges
Derivative [Line Items]
Estimated reclassification	$ 112,000
Derivatives Designated as Hedges | Derivatives in Cash Flow Hedging Relationships | Interest rate swaps
Derivative [Line Items]
Number of interest rate derivatives held | derivative	1
Notional amount of interest rate derivatives	$ 10,000,000
Derivatives Designated as Hedges | Derivatives in Cash Flow Hedging Relationships | Interest rate swaps | Federal Home Loan Bank advances
Derivative [Line Items]
Number of interest rate derivatives held | loan	1
Notional amount of interest rate derivatives	$ 10,000,000

DERIVATIVE FINANCIAL INSTRUME_4

DERIVATIVE FINANCIAL INSTRUMENTS - Corporation's Derivatives Designated as Hedges (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Derivative [Line Items]
Asset Derivatives	$ 74,345	$ 93,036
Liability Derivatives	73,914	92,770
Interest rate swaps on borrowings | Derivatives Designated as Hedges | Other Assets
Derivative [Line Items]
Asset Derivatives	112	164
Interest rate swaps on borrowings | Derivatives Designated as Hedges | Other Liabilities
Derivative [Line Items]
Liability Derivatives	$ 0	$ 0

DERIVATIVE FINANCIAL INSTRUME_5

DERIVATIVE FINANCIAL INSTRUMENTS - Amount of Loss Recognized in Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Derivative [Line Items]
Amount of Gain (Loss) Recognized in Other Comprehensive Income (Loss) on Derivatives (Effective Portion)	$ (51)	$ 303
Derivatives Designated as Hedging Instruments | Derivatives in Cash Flow Hedging Relationships | Interest Rate Products
Derivative [Line Items]
Amount of Gain (Loss) Recognized in Other Comprehensive Income (Loss) on Derivatives (Effective Portion)	$ (51)	$ 303

DERIVATIVE FINANCIAL INSTRUME_6

DERIVATIVE FINANCIAL INSTRUMENTS - Effect of Derivative Financial Instruments on Income Statement (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Derivative [Line Items]
Amount of Gain (Loss) Reclassed from Other Comprehensive Income (Loss) into Income (Effective Portion)	$ 1	$ (241)
Derivatives Designated as Hedging Instruments | Interest rate contracts | Interest Expense | Cash Flow Hedging
Derivative [Line Items]
Amount of Gain (Loss) Reclassed from Other Comprehensive Income (Loss) into Income (Effective Portion)	$ 1	$ (241)

DERIVATIVE FINANCIAL INSTRUME_7

DERIVATIVE FINANCIAL INSTRUMENTS - Fair Value of Derivative Financial Instruments and Their Classification on Balance Sheet (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Fair Value
Asset Derivatives	$ 74,345	$ 93,036
Liability Derivatives	73,914	92,770
Other Assets | Derivatives Not Designated as Hedging Instruments
Notional Amount
Included in other assets	1,310,366	1,204,321
Fair Value
Asset Derivatives	74,233	92,872
Other Liabilities | Derivatives Not Designated as Hedging Instruments
Notional Amount
Included in other liabilities	1,304,021	1,196,898
Fair Value
Liability Derivatives	73,914	92,770
Interest rate swaps | Other Assets | Derivatives Not Designated as Hedging Instruments
Notional Amount
Included in other assets	1,279,225	1,184,866
Fair Value
Asset Derivatives	73,757	92,652
Interest rate swaps | Other Liabilities | Derivatives Not Designated as Hedging Instruments
Notional Amount
Included in other liabilities	1,279,225	1,184,866
Fair Value
Liability Derivatives	73,757	92,652
Forward contracts related to mortgage loans to be delivered for sale | Other Assets | Derivatives Not Designated as Hedging Instruments
Notional Amount
Included in other assets	8,356	14,406
Fair Value
Asset Derivatives	305	188
Forward contracts related to mortgage loans to be delivered for sale | Other Liabilities | Derivatives Not Designated as Hedging Instruments
Notional Amount
Included in other liabilities	22,601	4,483
Fair Value
Liability Derivatives	149	63
Interest rate lock commitments | Other Assets | Derivatives Not Designated as Hedging Instruments
Notional Amount
Included in other assets	22,785	5,049
Fair Value
Asset Derivatives	171	32
Interest rate lock commitments | Other Liabilities | Derivatives Not Designated as Hedging Instruments
Notional Amount
Included in other liabilities	2,195	7,549
Fair Value
Liability Derivatives	$ 8	$ 55

DERIVATIVE FINANCIAL INSTRUME_8

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
	Mar. 31, 2023	Mar. 31, 2022
Derivative [Line Items]
Amount of Gain (Loss) Recognized Income on Derivative	$ 181	$ 0
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 Income on Derivative	(46)	0
Net gains and fees on sales of loans | Interest rate lock commitments
Derivative [Line Items]
Amount of Gain (Loss) Recognized Income on Derivative	$ 227	$ 0

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	Mar. 31, 2023	Dec. 31, 2022
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment securities available for sale	$ 1,794,208	$ 1,976,661
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	2,082	2,459
Significant Other Observable Inputs (Level 2)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment securities available for sale	1,788,664	1,970,763
Significant Unobservable Inputs (Level 3)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment securities available for sale	3,462	3,439
Recurring | Derivative liabilities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative liabilities	73,914	92,770
Recurring | U.S. Treasury
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment securities available for sale	2,082	2,459
Recurring | U.S. Government-sponsored agency securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment securities available for sale	102,598	101,962
Recurring | State and municipal
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment securities available for sale	1,183,736	1,351,760
Recurring | U.S. Government-sponsored mortgage-backed securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment securities available for sale	493,605	508,273
Recurring | Corporate obligations
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment securities available for sale	12,187	12,207
Recurring | Derivative assets
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative assets	74,345	93,036
Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Derivative liabilities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative liabilities	0	0
Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | U.S. Treasury
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment securities available for sale	2,082	2,459
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 | Quoted Prices in Active Markets for Identical Assets (Level 1) | Derivative assets
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative assets	0	0
Recurring | Significant Other Observable Inputs (Level 2) | Derivative liabilities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative liabilities	73,914	92,770
Recurring | Significant Other Observable Inputs (Level 2) | U.S. Treasury
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment securities available for sale	0	0
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	102,598	101,962
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	1,180,309	1,348,356
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	493,601	508,269
Recurring | Significant Other Observable Inputs (Level 2) | Corporate obligations
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment securities available for sale	12,156	12,176
Recurring | Significant Other Observable Inputs (Level 2) | Derivative assets
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative assets	74,345	93,036
Recurring | Significant Unobservable Inputs (Level 3) | Derivative liabilities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative liabilities	0	0
Recurring | Significant Unobservable Inputs (Level 3) | U.S. Treasury
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment securities available for sale	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	3,427	3,404
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
Recurring | Significant Unobservable Inputs (Level 3) | Derivative assets
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative assets	$ 0	$ 0

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
	Mar. 31, 2023	Mar. 31, 2022
Available for Sale Securities
Balance at beginning of the period	$ 3,439	$ 5,491
Included in other comprehensive income	114	(493)
Purchases, issuances and settlements	0	4,100
Principal payments	(91)	(186)
Ending balance	$ 3,462	$ 8,912

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	Mar. 31, 2023	Dec. 31, 2022
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset fair value	$ 51,757	$ 55,290
Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset fair value	0	0
Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset fair value	0	0
Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset fair value	$ 51,757	$ 55,290

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	3 Months Ended	12 Months Ended
	Mar. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)
State and municipal securities | Discounted cash flow
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value	$ 3,427	$ 3,404
State and municipal securities | Discounted cash flow | Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Maturity/Call date	1 month	1 month
US Muni BQ curve	A-	A-
State and municipal securities | Discounted cash flow | Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Maturity/Call date	15 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]
Debt securities, available-for-sale, measurement input	0.031	0.004
State and municipal securities | Discounted cash flow | Discount rate | Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Debt securities, available-for-sale, measurement input	0.044	0.04
State and municipal securities | Discounted cash flow | Weighted-average coupon | Weighted-average
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Debt securities, available-for-sale, measurement input	0.034	0.034
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]
Debt securities, available-for-sale, 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]
Discount rate description	3 month LIBOR	3 month LIBOR
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]
Debt securities, available-for-sale, measurement input	200	200
Collateral dependent loans | Collateral based measurements
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value	$ 51,757	$ 55,290
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]
Collateral dependent loans, 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]
Collateral dependent loans, measurement input	0.10	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]
Collateral dependent loans, measurement input	0.015	0.011

FAIR VALUES OF FINANCIAL INST_7

FAIR VALUES OF FINANCIAL INSTRUMENTS - Estimated Fair Values of Financial Instruments (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Assets:
Cash and due from banks	$ 125,818	$ 122,594
Interest-bearing deposits	352,695	126,061
Investment securities available for sale	1,794,208	1,976,661
Investment securities held to maturity	1,934,601	1,907,865
Loans held for sale	9,408	9,094
Loans, net	11,573,561	11,156,217
Federal Home Loan Bank stock	41,878	38,525
Derivative assets	74,345	93,036
Interest receivable	85,515	85,070
Liabilities:
Deposits	14,681,780	14,356,953
Borrowings:
Federal funds purchased	20	171,560
Securities sold under repurchase agreements	179,051	167,396
Federal Home Loan Bank advances	819,690	615,211
Subordinated debentures and other borrowings	121,402	122,102
Derivative liabilities	73,914	92,770
Interest payable	11,979	7,530
Quoted Prices in Active Markets for Identical Assets (Level 1)
Assets:
Cash and due from banks	125,818	122,594
Interest-bearing deposits	352,695	126,061
Investment securities available for sale	2,082	2,459
Investment securities held to maturity	0	0
Loans held for sale	0	0
Loans, net	0	0
Federal Home Loan Bank stock	0	0
Derivative assets	0	0
Interest receivable	0	0
Liabilities:
Deposits	12,921,842	13,105,936
Borrowings:
Federal funds purchased	0	0
Securities sold under repurchase agreements	0	0
Federal Home Loan Bank advances	0	0
Subordinated debentures and other borrowings	0	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	1,788,664	1,970,763
Investment securities held to maturity	1,920,038	1,893,271
Loans held for sale	9,408	9,094
Loans, net	0	0
Federal Home Loan Bank stock	41,878	38,525
Derivative assets	74,345	93,036
Interest receivable	85,515	85,070
Liabilities:
Deposits	1,759,938	1,251,017
Borrowings:
Federal funds purchased	20	171,560
Securities sold under repurchase agreements	179,051	167,396
Federal Home Loan Bank advances	819,690	615,211
Subordinated debentures and other borrowings	121,402	122,102
Derivative liabilities	73,914	92,770
Interest payable	11,979	7,530
Significant Unobservable Inputs (Level 3)
Assets:
Cash and due from banks	0	0
Interest-bearing deposits	0	0
Investment securities available for sale	3,462	3,439
Investment securities held to maturity	14,563	14,594
Loans held for sale	0	0
Loans, net	11,573,561	11,156,217
Federal Home Loan Bank stock	0	0
Derivative assets	0	0
Interest receivable	0	0
Liabilities:
Deposits	0	0
Borrowings:
Federal funds purchased	0	0
Securities sold under repurchase agreements	0	0
Federal Home Loan Bank advances	0	0
Subordinated debentures and other borrowings	0	0
Derivative liabilities	0	0
Interest payable	0	0
Carrying Amount
Assets:
Cash and due from banks	125,818	122,594
Interest-bearing deposits	352,695	126,061
Investment securities available for sale	1,794,208	1,976,661
Investment securities held to maturity	2,263,181	2,287,127
Loans held for sale	9,408	9,094
Loans, net	12,018,409	11,780,617
Federal Home Loan Bank stock	41,878	38,525
Derivative assets	74,345	93,036
Interest receivable	85,515	85,070
Liabilities:
Deposits	14,703,287	14,382,745
Borrowings:
Federal funds purchased	20	171,560
Securities sold under repurchase agreements	179,067	167,413
Federal Home Loan Bank advances	823,577	823,674
Subordinated debentures and other borrowings	151,312	151,298
Derivative liabilities	73,914	92,770
Interest payable	$ 11,979	$ 7,530

TRANSFERS ACCOUNTED FOR AS SE_3

TRANSFERS ACCOUNTED FOR AS SECURED BORROWINGS (Details) - U.S. Government-sponsored mortgage-backed securities - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Assets Sold under Agreements to Repurchase [Line Items]
Remaining Contractual Maturity of the Agreements	$ 179,067	$ 167,413
Overnight and Continuous
Assets Sold under Agreements to Repurchase [Line Items]
Remaining Contractual Maturity of the Agreements	179,067	167,413
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

ACCUMULATED OTHER COMPREHENSI_3

ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) - Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Accumulated Other Comprehensive Income (Loss)
Beginning balance	$ 2,034,770	$ 1,912,571
Other comprehensive income (loss) before reclassifications	38,997	(139,248)
Amounts reclassified from accumulated other comprehensive income	1,240	(257)
Period change	40,237	(139,505)
Ending balance	2,122,448	1,807,633
Total
Accumulated Other Comprehensive Income (Loss)
Beginning balance	(239,151)	55,113
Period change	40,237	(139,505)
Ending balance	(198,914)	(84,392)
Unrealized Gains (Losses) on Securities Available for Sale
Accumulated Other Comprehensive Income (Loss)
Beginning balance	(234,495)	59,774
Other comprehensive income (loss) before reclassifications	39,038	(139,487)
Amounts reclassified from accumulated other comprehensive income	1,241	(447)
Period change	40,279	(139,934)
Ending balance	(194,216)	(80,160)
Unrealized Gains (Losses) on Cash Flow Hedges
Accumulated Other Comprehensive Income (Loss)
Beginning balance	130	(660)
Other comprehensive income (loss) before reclassifications	(41)	239
Amounts reclassified from accumulated other comprehensive income	(1)	190
Period change	(42)	429
Ending balance	88	(231)
Unrealized Gains (Losses) on Defined Benefit Plans
Accumulated Other Comprehensive Income (Loss)
Beginning balance	(4,786)	(4,001)
Other comprehensive income (loss) before reclassifications	0	0
Amounts reclassified from accumulated other comprehensive income	0	0
Period change	0	0
Ending balance	$ (4,786)	$ (4,001)

ACCUMULATED OTHER COMPREHENSI_4

ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) - Reclassification out of Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Reclassification Adjustments out of Accumulated Other Comprehensive Income [Line Items]
Other income - net realized gains (losses) on sales of available for sale securities	$ (1,571)	$ 566
Interest expense - subordinated debentures and term loans	2,385	1,659
Income tax expense	(11,317)	(7,266)
Total reclassifications for the period, net of tax	64,079	48,586
Amount Reclassified from Accumulated Other Comprehensive Income (Loss) for the Period
Reclassification Adjustments out of Accumulated Other Comprehensive Income [Line Items]
Total reclassifications for the period, net of tax	(1,240)	257
Amount Reclassified from Accumulated Other Comprehensive Income (Loss) for the Period | 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	(1,571)	566
Income tax expense	330	(119)
Total reclassifications for the period, net of tax	(1,241)	447
Amount Reclassified from Accumulated Other Comprehensive Income (Loss) for the Period | Unrealized gains (losses) on cash flow hedges
Reclassification Adjustments out of Accumulated Other Comprehensive Income [Line Items]
Income tax expense	0	51
Total reclassifications for the period, net of tax	1	(190)
Amount Reclassified from Accumulated Other Comprehensive Income (Loss) for the Period | 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	$ 1	$ (241)

SHARE-BASED COMPENSATION - Narr

SHARE-BASED COMPENSATION - Narrative (Details) - USD ($)		3 Months Ended
	Jul. 01, 2022	Mar. 31, 2023	Mar. 31, 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Forfeiture rate		0.20%
Aggregate intrinsic value of stock options exercised		$ 1,400,000	$ 91,000
Cash receipts of stock options exercised		$ 1,010,000	$ 37,000
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		$ 8,100,000
Unrecognized compensation expense expected recognition period		1 year 7 months 6 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	$ 30,000
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
	Mar. 31, 2023	Mar. 31, 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Pre-tax compensation expense	$ 1,197	$ 1,100
Income tax expense (benefit)	(312)	(243)
Total share-based compensation expense, net of income taxes	885	857
Stock and ESPP Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Pre-tax compensation expense	30	29
Income tax expense (benefit)	(57)	(17)
Total share-based compensation expense, net of income taxes	(27)	12
Restricted Stock Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Pre-tax compensation expense	1,167	1,071
Income tax expense (benefit)	(255)	(226)
Total share-based compensation expense, net of income taxes	$ 912	$ 845

SHARE-BASED COMPENSATION - Stoc

SHARE-BASED COMPENSATION - Stock Option Activity (Details)	3 Months Ended
	Mar. 31, 2023 USD ($) $ / shares shares
Number of Shares
Beginning balance (in shares) | shares	155,100
Exercised (in shares) | shares	(58,620)
Ending balance (in shares) | shares	96,480
Vested and expected to vest, number of shares (in shares) | shares	96,480
Exercisable, number of shares (in shares) | shares	96,480
Weighted-Average Exercise Price
Beginning balance (in dollars per share) | $ / shares	$ 18.89
Exercised (in dollars per share) | $ / shares	17.23
Ending balance (in dollars per share) | $ / shares	19.90
Vested and expected to vest, weighted-average exercise price (in dollars per share) | $ / shares	19.90
Exercisable, weighted-average exercise price (in dollars per share) | $ / shares	$ 19.90
Weighted Average Remaining Contractual Term (in Years)
Outstanding	2 years 6 months 3 days
Vested and expected to vest	2 years 6 months 3 days
Exercisable	2 years 6 months 3 days
Aggregate Intrinsic Value
Outstanding | $	$ 1,259,244
Vested and expected to vest | $	1,259,244
Exercisable | $	$ 1,259,244

SHARE-BASED COMPENSATION - Unve

SHARE-BASED COMPENSATION - Unvested RSAs Outstanding (Details) - RSAs	3 Months Ended
	Mar. 31, 2023 $ / shares shares
Number of Shares
Unvested RSAs, Beginning balance (in shares) | shares	416,705
Granted (in shares) | shares	12,146
Vested (in shares) | shares	(7,573)
Forfeited (in shares) | shares	(1,200)
Unvested RSAs, Ending balance (in shares) | shares	420,078
Weighted-Average Grant Date Fair Value
Unvested RSAs, Beginning balance (in dollars per share) | $ / shares	$ 36.97
Granted (in dollars per share) | $ / shares	34.41
Vested (in dollars per share) | $ / shares	26.47
Forfeited (in dollars per share) | $ / shares	36.31
Unvested RSAs, Ending balance (in dollars per share) | $ / shares	$ 37.09

INCOME TAX (Details)

INCOME TAX (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Reconciliation of Federal Statutory to Actual Tax Expense:
Federal statutory income tax at 21%	$ 15,833	$ 11,729
Tax-exempt interest income	(4,867)	(4,520)
Share-based compensation	(61)	(12)
Tax-exempt earnings and gains on life insurance	(270)	(354)
Tax credits	(92)	(87)
State Income Tax	700	495
Other	74	15
Actual Tax Expense	$ 11,317	$ 7,266
Effective Tax Rate	15%	13%

NET INCOME PER COMMON SHARE - R

NET INCOME PER COMMON SHARE - Reconciliation of Basic and Diluted Net Income Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Net Income Available to Common Stockholders
Net income available to common stockholders	$ 63,610	$ 48,586
Diluted net income per common share	$ 63,610	$ 48,586
Weighted-Average Common Shares
Net income available to common stockholders (in shares)	59,216,198	53,412,762
Effect of potentially dilutive stock options and restricted stock awards (in shares)	224,530	203,106
Diluted net income per common share (in shares)	59,440,728	53,615,868
Per Share Amount
Net income available to common stockholders (in dollars per share)	$ 1.07	$ 0.91
Diluted net income per common share (in dollars per share)	$ 1.07	$ 0.91

NET INCOME PER COMMON SHARE - N

NET INCOME PER COMMON SHARE - Narrative (Details) - shares	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Earnings Per Share [Abstract]
Stock options not included in the earnings per share calculation (in shares)	0	0