Loans (Impaired Loans) - Additional Information (Detail) |
3 Months Ended | 9 Months Ended | |||
|---|---|---|---|---|---|
|
Sep. 30, 2026
USD ($)
Loan
|
Sep. 30, 2025
USD ($)
Loan
|
Sep. 30, 2026
USD ($)
Contract
Loan
|
Sep. 30, 2025
USD ($)
Loan
|
Dec. 31, 2025
USD ($)
|
|
| Accounts, Notes, Loans and Financing Receivable [Line Items] | |||||
| Allowance for credit loss for collateral dependent loans | $ 118,000 | $ 118,000 | $ 145,000 | ||
| Modifications to borrower experiencing financial difficulty | $ 0 | $ 0 | $ 0 | $ 0 | |
| Maximum time for re-evaluation (in months) | 12 months | ||||
| Re-evaluation period for real estate | 2 years | ||||
| Number of contracts modified | Loan | 0 | 0 | 0 | 0 | |
| Principal Forgiveness [Member] | |||||
| Accounts, Notes, Loans and Financing Receivable [Line Items] | |||||
| Number of contracts modified | Contract | 0 | ||||
| Consumer Real Estate [Member] | |||||
| Accounts, Notes, Loans and Financing Receivable [Line Items] | |||||
| Foreclosed residential real estate property | $ 0 | $ 0 | $ 0 | $ 0 | 0 |
| Residential real estate properties foreclosure proceedings | $ 720,000 | $ 944,000 | $ 720,000 | $ 944,000 | $ 1,400,000 |