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Loans - Collateral-dependent Loans by Class (Details) - USD ($) $ in Thousands | Mar. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total | $ 3,978,919 | $ 3,977,900
Commercial and Industrial Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total | 572,666 | 589,541
Commercial Real Estate Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total | 2,148,808 | 2,121,835
Agricultural Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total | 400,733 | 423,803
Leases |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total | 73,496 | 71,988
Home Equity Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total | 312,859 | 299,685
Consumer Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total | 88,008 | 87,853
Credit Cards |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total | 21,113 | 20,351
Residential Mortgage Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total | 361,236 | 362,844
Total |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total | 20,371 | 19,733
Total | Commercial and Industrial Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total | 6,294 | 5,605
Total | Commercial Real Estate Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total | 8,937 | 8,553
Total | Agricultural Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total | 4,111 | 4,393
Total | Leases |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total | 0 | 0
Total | Home Equity Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total | 421 | 420
Total | Consumer Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total | 9 | 9
Total | Credit Cards |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total | 0 | 0
Total | Residential Mortgage Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total | 599 | 753
Real Estate |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total | 17,321 | 16,741
Real Estate | Commercial and Industrial Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total | 4,269 | 3,668
Real Estate | Commercial Real Estate Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total | 8,937 | 8,553
Real Estate | Agricultural Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total | 3,086 | 3,338
Real Estate | Leases |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total | 0 | 0
Real Estate | Home Equity Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total | 421 | 420
Real Estate | Consumer Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total | 9 | 9
Real Estate | Credit Cards |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total | 0 | 0
Real Estate | Residential Mortgage Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total | 599 | 753
Equipment |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total | 1,232 | 1,104
Equipment | Commercial and Industrial Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total | 207 | 49
Equipment | Commercial Real Estate Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total | 0 | 0
Equipment | Agricultural Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total | 1,025 | 1,055
Equipment | Leases |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total | 0 | 0
Equipment | Home Equity Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total | 0 | 0
Equipment | Consumer Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total | 0 | 0
Equipment | Credit Cards |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total | 0 | 0
Equipment | Residential Mortgage Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total | 0 | 0
Accounts Receivable |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total | 0 |
Accounts Receivable | Commercial and Industrial Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total | 0 |
Accounts Receivable | Commercial Real Estate Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total | 0 | 0
Accounts Receivable | Agricultural Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total | 0 | 0
Accounts Receivable | Leases |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total | 0 | 0
Accounts Receivable | Home Equity Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total | 0 | 0
Accounts Receivable | Consumer Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total | 0 | 0
Accounts Receivable | Credit Cards |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total | 0 | 0
Accounts Receivable | Residential Mortgage Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total | 0 | 0
Other |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total | 1,818 | 1,888
Other | Commercial and Industrial Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total | 1,818 | 1,888
Other | Commercial Real Estate Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total | 0 | 0
Other | Agricultural Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total | 0 | 0
Other | Leases |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total | 0 | 0
Other | Home Equity Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total | 0 | 0
Other | Consumer Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total | 0 | 0
Other | Credit Cards |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total | 0 | 0
Other | Residential Mortgage Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total | $ 0 | $ 0

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