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Loans and Allowance for Credit Losses - Aging Analysis of Loans by Loan Category (Details) - USD ($) $ in Thousands | Sep. 30, 2024 | Dec. 31, 2023
--- | --- | ---
Financing Receivable, Past Due [Line Items] |  |  |
Loans |  | $ 1,503,950 | $ 1,410,653
Loans, 90 Days Past Due and Accruing |  | 0 | 0
Agricultural [Member] |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans |  | 49,147 | 49,210
Loans, 90 Days Past Due and Accruing |  | 0 | 0
Commercial and Industrial [Member] |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans |  | 229,232 | 229,915
Loans, 90 Days Past Due and Accruing |  | 0 | 0
Consumer Portfolio Segment [Member] |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans |  | 30,693 | 36,541
Loans, 90 Days Past Due and Accruing |  | 0 | 0
Commercial Real Estate Portfolio Segment [Member] |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans |  | 862,773 | 786,921
Loans, 90 Days Past Due and Accruing |  | 0 | 0
Construction Real Estate [Member] |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans |  | 14,555 | 20,936
Loans, 90 Days Past Due and Accruing |  | 0 | 0
Residential Portfolio Segment [Member] |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans |  | 279,058 | 267,730
Loans, 90 Days Past Due and Accruing |  |  | 0
Loans To Other Financial Institutions [Member] |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans |  | 38,492 | 19,400
Financial Asset, 30 to 59 Days Past Due [Member] |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans | [1] | 306 | 959
Financial Asset, 30 to 59 Days Past Due [Member] | Agricultural [Member] |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans | [1] | 0 | 0
Financial Asset, 30 to 59 Days Past Due [Member] | Commercial and Industrial [Member] |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans | [1] | 0 | 0
Financial Asset, 30 to 59 Days Past Due [Member] | Consumer Portfolio Segment [Member] |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans | [1] | 7 | 31
Financial Asset, 30 to 59 Days Past Due [Member] | Commercial Real Estate Portfolio Segment [Member] |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans | [1] | 0 | 173
Financial Asset, 30 to 59 Days Past Due [Member] | Construction Real Estate [Member] |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans | [1] | 50 | 0
Financial Asset, 30 to 59 Days Past Due [Member] | Residential Portfolio Segment [Member] |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans | [1] | 249 | 755
Financial Asset, 30 to 59 Days Past Due [Member] | Loans To Other Financial Institutions [Member] |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans | [1] | 0 | 0
Financial Asset, 60 to 89 Days Past Due [Member] |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans | [1] | 1,171 | 551
Financial Asset, 60 to 89 Days Past Due [Member] | Agricultural [Member] |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans | [1] | 0 | 0
Financial Asset, 60 to 89 Days Past Due [Member] | Commercial and Industrial [Member] |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans | [1] | 43 | 0
Financial Asset, 60 to 89 Days Past Due [Member] | Consumer Portfolio Segment [Member] |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans | [1] | 0 | 2
Financial Asset, 60 to 89 Days Past Due [Member] | Commercial Real Estate Portfolio Segment [Member] |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans | [1] | 0 | 0
Financial Asset, 60 to 89 Days Past Due [Member] | Construction Real Estate [Member] |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans | [1] | 24 | 0
Financial Asset, 60 to 89 Days Past Due [Member] | Residential Portfolio Segment [Member] |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans | [1] | 1,104 | 549
Financial Asset, 60 to 89 Days Past Due [Member] | Loans To Other Financial Institutions [Member] |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans | [1] | 0 | 0
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans | [1] | 1,471 | 871
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Agricultural [Member] |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans | [1] | 0 | 0
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Commercial and Industrial [Member] |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans | [1] | 0 | 1
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Consumer Portfolio Segment [Member] |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans | [1] | 0 | 0
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Commercial Real Estate Portfolio Segment [Member] |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans | [1] | 229 | 0
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Construction Real Estate [Member] |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans | [1] | 2 | 0
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Residential Portfolio Segment [Member] |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans | [1] | 1,240 | 870
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Loans To Other Financial Institutions [Member] |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans | [1] | 0 | 0
Financial Asset, Past Due [Member] |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans | [1] | 2,948 | 2,381
Financial Asset, Past Due [Member] | Agricultural [Member] |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans | [1] | 0 | 0
Financial Asset, Past Due [Member] | Commercial and Industrial [Member] |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans | [1] | 43 | 1
Financial Asset, Past Due [Member] | Consumer Portfolio Segment [Member] |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans | [1] | 7 | 33
Financial Asset, Past Due [Member] | Commercial Real Estate Portfolio Segment [Member] |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans | [1] | 229 | 173
Financial Asset, Past Due [Member] | Construction Real Estate [Member] |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans | [1] | 76 | 0
Financial Asset, Past Due [Member] | Residential Portfolio Segment [Member] |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans | [1] | 2,593 | 2,174
Financial Asset, Past Due [Member] | Loans To Other Financial Institutions [Member] |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans | [1] | 0 | 0
Financial Asset, Not Past Due [Member] |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans |  | 1,501,002 | 1,408,272
Financial Asset, Not Past Due [Member] | Agricultural [Member] |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans |  | 49,147 | 49,210
Financial Asset, Not Past Due [Member] | Commercial and Industrial [Member] |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans |  | 229,189 | 229,914
Financial Asset, Not Past Due [Member] | Consumer Portfolio Segment [Member] |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans |  | 30,686 | 36,508
Financial Asset, Not Past Due [Member] | Commercial Real Estate Portfolio Segment [Member] |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans |  | 862,544 | 786,748
Financial Asset, Not Past Due [Member] | Construction Real Estate [Member] |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans |  | 14,479 | 20,936
Financial Asset, Not Past Due [Member] | Residential Portfolio Segment [Member] |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans |  | 276,465 | 265,556
Financial Asset, Not Past Due [Member] | Loans To Other Financial Institutions [Member] |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Loans |  | $ 38,492 | $ 19,400
[1] | Includes nonaccrual loans.

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