Commitments and Contingent Liabilities - Additional Information (Detail) - USD ($) $ in Millions |
Jun. 30, 2026 |
Dec. 31, 2025 |
|---|---|---|
| Commitments and Contingencies Disclosure [Abstract] | ||
| Allowance for credit losses associated with loan commitments | $ 7.7 | $ 7.0 |
| Liability associated with letters of credit | $ 0.3 | $ 0.4 |