Loans and Allowance for Credit Losses - Loans by Type as Percentage of Portfolio (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
Mar. 31, 2026	Dec. 31, 2025	Mar. 31, 2025	Dec. 31, 2024
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 2,983,297	$ 3,022,034	$ 2,924,955
Allowance for credit loss	$ 35,496	$ 35,550	34,567	$ 16,552
Percentage of allowance for credit losses	1.19%	1.18%
Loans, net	$ 2,947,801	$ 2,986,484
Agricultural [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 47,840	$ 56,218	48,165
Percentage of loans	1.60%	1.90%
Percentage of increase decrease of loans	(14.90%)
Allowance for credit loss	$ 171	$ 219	220	90
Commercial and Industrial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 369,425	$ 352,556	345,138
Percentage of loans	12.40%	11.70%
Percentage of increase decrease of loans	4.80%
Allowance for credit loss	$ 8,925	$ 6,797	5,503	2,260
Commercial Real Estate Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 1,745,410	$ 1,780,396	1,757,598
Percentage of loans	58.50%	58.90%
Percentage of increase decrease of loans	(2.00%)
Allowance for credit loss	$ 15,751	$ 18,416	20,727	9,460
Consumer Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 23,180	$ 26,701	30,932
Percentage of loans	0.80%	0.90%
Percentage of increase decrease of loans	(13.20%)
Allowance for credit loss	$ 563	$ 693	703	733
Construction Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 20,897	$ 19,139	18,067
Percentage of loans	0.70%	0.60%
Percentage of increase decrease of loans	9.20%
Allowance for credit loss	$ 47	$ 80	90	59
Residential Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 725,358	$ 728,037	722,662
Percentage of loans	24.30%	24.10%
Percentage of increase decrease of loans	(0.40%)
Allowance for credit loss	$ 9,962	$ 9,257	7,320	3,890
Mortgage Warehouse Advances [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 51,187	$ 58,987	2,393
Percentage of loans	1.70%	2.00%
Percentage of increase decrease of loans	(13.20%)
Allowance for credit loss	$ 77	$ 88	$ 4	$ 60

Percentage of allowance for credit losses.

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Percentage of increase decrease of loans and leases receivable.

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Amount of allowance for credit loss on financing receivable. Excludes allowance for financing receivable covered under loss sharing agreement.

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Amortized cost, before allowance for credit loss, of financing receivable. Excludes financing receivable covered under loss sharing agreement and net investment in lease.

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