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Allowance for Credit Losses - Ending Allocation of Allowance for Loan Losses and Loan Balances Outstanding (Detail) - USD ($) $ in Thousands | Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
--- | --- | --- | ---
Accounts Notes And Loans Receivable [Line Items] |  |  |
Allowance for loan losses, Total |  |  | $ 28,511
Total loans | $ 3,081,230 | $ 2,861,727 |
Commercial and Agriculture [Member] |  |  |
Accounts Notes And Loans Receivable [Line Items] |  |  |
Allowance for loan losses, Total |  |  | 3,011
Total loans | 328,488 | 304,793 |
Commercial Real Estate Owner Occupied [Member] |  |  |
Accounts Notes And Loans Receivable [Line Items] |  |  |
Allowance for loan losses, Total |  |  | 4,565
Total loans | 374,367 | 377,321 |
Commercial Real Estate Non Owner Occupied [Member] |  |  |
Accounts Notes And Loans Receivable [Line Items] |  |  |
Allowance for loan losses, Total |  |  | 14,138
Total loans | 1,225,991 | 1,161,894 |
Residential Real Estate [Member] |  |  |
Accounts Notes And Loans Receivable [Line Items] |  |  |
Allowance for loan losses, Total |  |  | 3,145
Total loans | 763,869 | 659,841 |
Real Estate Construction [Member] |  |  |
Accounts Notes And Loans Receivable [Line Items] |  |  |
Allowance for loan losses, Total |  |  | 2,293
Total loans | 305,992 | 260,409 |
Farm Real Estate [Member] |  |  |
Accounts Notes And Loans Receivable [Line Items] |  |  |
Allowance for loan losses, Total |  |  | 291
Total loans | 23,035 | 24,771 |
Lease Financing Receivable [Member] |  |  |
Accounts Notes And Loans Receivable [Line Items] |  |  |
Total loans | 46,900 | 54,642 |
Consumer and Other [Member] |  |  |
Accounts Notes And Loans Receivable [Line Items] |  |  |
Allowance for loan losses, Total |  |  | 98
Total loans | $ 12,588 | $ 18,056 |
Unallocated [Member] |  |  |
Accounts Notes And Loans Receivable [Line Items] |  |  |
Allowance for loan losses, Total |  |  | $ 541

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