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Loans - Additional Information (Detail) - USD ($) $ in Thousands | Sep. 30, 2023 | Dec. 31, 2022
--- | --- | ---
Accounts Notes And Loans Receivable [Line Items] |  |
Total loans | $ 8,208 | $ 9,253
Net deferred loan fees | 2,542 | 1,652
Accrued interest receivable | 11,489 | 11,178
Commercial and Agriculture [Member] |  |
Accounts Notes And Loans Receivable [Line Items] |  |
Total loans | 3,587 | 859
Commercial and Agriculture [Member] | Paycheck Protection Program Loans [Member] |  |
Accounts Notes And Loans Receivable [Line Items] |  |
Total loans | $ 399 | $ 566

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