Loans - Additional Information (Detail) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Accounts Notes And Loans Receivable [Line Items]
Total loans	$ 15,968	$ 9,253
Net deferred loan fees	2,066	1,652
Accrued interest receivable	10,254	11,178
Commercial and Agriculture [Member]
Accounts Notes And Loans Receivable [Line Items]
Total loans	1,719	859
Commercial and Agriculture [Member] | Paycheck Protection Program Loans [Member]
Accounts Notes And Loans Receivable [Line Items]
Total loans	$ 464	$ 566