v3.25.2
Loans (Tier Risk Rating System) - Additional Information (Detail) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Nonaccrual [Member]        
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Interest income on nonaccrual loans $ 31 $ 19 $ 52 $ 41
Minimum [Member]        
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Repayment period of loan with a reasonable reduction of principal balance     2 years