Loans (Tier Risk Rating System) - Additional Information (Detail) - USD ($) $ in Thousands |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
Jun. 30, 2026 |
Jun. 30, 2025 |
|
| Nonaccrual [Member] | ||||
| Accounts, Notes, Loans and Financing Receivable [Line Items] | ||||
| Interest income on nonaccrual loans, cash basis | $ 67 | $ 31 | $ 94 | $ 52 |
| Minimum [Member] | ||||
| Accounts, Notes, Loans and Financing Receivable [Line Items] | ||||
| Repayment period of loan with a reasonable reduction of principal balance | 2 years | |||