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Loans - Additional Information (Detail) - USD ($) $ in Thousands | Mar. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Accounts Notes And Loans Receivable [Line Items] |  |
Total loans | $ 16,050 | $ 13,158
Net deferred loan fees | 2,664 | 2,743
Accrued interest receivable | 13,513 | 12,819
Commercial and Agriculture [Member] |  |
Accounts Notes And Loans Receivable [Line Items] |  |
Total loans | 2,370 | 3,698
Commercial and Agriculture [Member] | Paycheck Protection Program Loans [Member] |  |
Accounts Notes And Loans Receivable [Line Items] |  |
Total loans | $ 289 | $ 326

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