Commitments, Contingencies and Off-Balance-Sheet Risk - Additional Information (Detail) |
3 Months Ended | |
|---|---|---|
Mar. 31, 2026 |
Dec. 31, 2025 |
|
| Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] | ||
| Maximum period of commitments to make loans | 1 year | |
| Maximum time period of maturities | 30 years | |
| Minimum [Member] | ||
| Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] | ||
| Range of fixed interest rate loan commitments | 3.10% | 3.10% |
| Maximum [Member] | ||
| Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] | ||
| Range of fixed interest rate loan commitments | 7.80% | 8.00% |