Commitments and Contingencies - Additional Information (Detail) - USD ($) $ in Thousands |
12 Months Ended | |
|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
|
| Other Commitments [Line Items] | ||
| Outstanding loan commitments | $ 247,200 | $ 283,200 |
| Cancellable amounts | 35,200 | 32,900 |
| Outstanding stand-by letters of credit | 6,300 | 12,500 |
| Recourse reserve | 1,400 | |
| Credit losses for unfunded commitments | 100 | 2,200 |
| Gain on sale of MSRs | 1,427 | (3,607) |
| Future commitments outstanding related to investments | 4,900 | 7,100 |
| Mortgage Servicing Rights Assets [Member] | ||
| Other Commitments [Line Items] | ||
| Reserve | 200 | 1,800 |
| Other Liabilities [Member] | ||
| Other Commitments [Line Items] | ||
| Reserves for unfunded commitments to borrowers | $ 800 | $ 900 |