Loans - Schedule of Loans Acquired (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2025	Feb. 01, 2025
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]
Acquired Loan Balance	$ 1,507,751
Loan Balance	1,507,751
Fair Value (Discount)/Premium	(61,794)
Purchase Price of Loans at Acquisition	94,387
Allowance for Credit Losses at Acquisition	15,908
Non-Credit Discount/(Premium) at Acquisition	6,449
Total	116,744
Commercial and Industrial Loans
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]
Acquired Loan Balance	150,597
Loan Balance	150,597
Fair Value (Discount)/Premium	(3,631)
Allowance for Credit Losses at Acquisition	5,246
Commercial Real Estate Loans
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]
Acquired Loan Balance	783,421
Loan Balance	783,421
Fair Value (Discount)/Premium	(19,555)
Allowance for Credit Losses at Acquisition	7,080
Agricultural Loans
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]
Acquired Loan Balance	47,038
Loan Balance	47,038
Fair Value (Discount)/Premium	(1,484)
Allowance for Credit Losses at Acquisition	3,352
Leases
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]
Acquired Loan Balance	0
Loan Balance	0
Fair Value (Discount)/Premium	0
Allowance for Credit Losses at Acquisition	0
Consumer Loans
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]
Acquired Loan Balance	30,325
Loan Balance	30,325
Fair Value (Discount)/Premium	(510)
Allowance for Credit Losses at Acquisition	20
Home Equity Loans
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]
Acquired Loan Balance	59,694
Loan Balance	59,694
Fair Value (Discount)/Premium	(1,062)
Allowance for Credit Losses at Acquisition	11
Credit Cards
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]
Acquired Loan Balance	0
Loan Balance	0
Fair Value (Discount)/Premium	0
Allowance for Credit Losses at Acquisition	0
Residential Mortgage Loans
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]
Acquired Loan Balance	436,676
Loan Balance	436,676
Fair Value (Discount)/Premium	(35,552)
Allowance for Credit Losses at Acquisition	$ 199
Citizens Union Bancorp of Shelbyville, Inc. ("CUB")
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]
Acquired Loan Balance		$ 1,569,631
Fair Value Discount		(65,658)
Fair Value		1,503,973
Loan Balance		$ 1,569,631

Business Combination, Acquired Receivables, Fair Value Discounts

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Fair value of acquired receivable from business combination, excluding certain loans and debt securities acquired in transfer.

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+ References

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Amount, excluding accrued interest, of allowance for credit loss at acquisition date of financing receivable purchased with credit deterioration. Excludes net investment in lease.

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Amount at par value of financing receivable purchased with credit deterioration.

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Amount at purchase price of financing receivable purchased with credit deterioration.

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Amount of discount (premium) attributable to other factors on financing receivable purchased with credit deterioration.

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Amount of unamortized purchase premium (discount) on financing receivable. Excludes financing receivable covered under loss sharing agreement.

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