Loans - Collateral-dependent Loans by Class (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 4,133,267	$ 3,977,900
Total
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	17,423	19,733
Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	17,012	16,741
Equipment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	353	1,104
Accounts Receivable
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	0	0
Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	58	1,888
Commercial and Industrial Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	591,785	589,541
Commercial and Industrial Loans | Total
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	6,134	5,605
Commercial and Industrial Loans | Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	5,986	3,668
Commercial and Industrial Loans | Equipment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	90	49
Commercial and Industrial Loans | Accounts Receivable
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	0	0
Commercial and Industrial Loans | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	58	1,888
Commercial Real Estate Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	2,224,872	2,121,835
Commercial Real Estate Loans | Total
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	7,293	8,553
Commercial Real Estate Loans | Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	7,293	8,553
Commercial Real Estate Loans | Equipment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	0	0
Commercial Real Estate Loans | Accounts Receivable
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	0	0
Commercial Real Estate Loans | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	0	0
Agricultural Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	431,037	423,803
Agricultural Loans | Total
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	3,040	4,393
Agricultural Loans | Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	2,777	3,338
Agricultural Loans | Equipment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	263	1,055
Agricultural Loans | Accounts Receivable
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	0	0
Agricultural Loans | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	0	0
Leases
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	79,253	71,988
Leases | Total
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	0	0
Leases | Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	0	0
Leases | Equipment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	0	0
Leases | Accounts Receivable
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	0	0
Leases | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	0	0
Home Equity Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	344,808	299,685
Home Equity Loans | Total
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	423	420
Home Equity Loans | Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	423	420
Home Equity Loans | Equipment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	0	0
Home Equity Loans | Accounts Receivable
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	0	0
Home Equity Loans | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	0	0
Consumer Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	81,396	87,853
Consumer Loans | Total
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	10	9
Consumer Loans | Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	10	9
Consumer Loans | Equipment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	0	0
Consumer Loans | Accounts Receivable
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	0	0
Consumer Loans | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	0	0
Credit Cards
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	22,668	20,351
Credit Cards | Total
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	0	0
Credit Cards | Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	0	0
Credit Cards | Equipment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	0	0
Credit Cards | Accounts Receivable
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	0	0
Credit Cards | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	0	0
Residential Mortgage Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	357,448	362,844
Residential Mortgage Loans | Total
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	523	753
Residential Mortgage Loans | Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	523	753
Residential Mortgage Loans | Equipment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	0	0
Residential Mortgage Loans | Accounts Receivable
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	0	0
Residential Mortgage Loans | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 0	$ 0