Commitments, Contingencies and Credit Risk - Allowance for credit losses for off-balance sheet (Details) - USD ($) $ in Thousands |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Sep. 30, 2025 |
Sep. 30, 2026 |
Sep. 30, 2025 |
Jun. 30, 2026 |
|
| Commitments, Contingencies and Credit Risk | ||||
| Allowance for off-balance sheet credit exposure | $ 3,810 | $ 3,860 | $ 3,810 | $ 3,860 |
| Off-balance sheet credit exposure | ||||
| Beginning Balance | 3,610 | 4,010 | 3,610 | |
| Provision for (Recovery of) Off-Balance Sheet Credit Exposures | 200 | (150) | 200 | |
| Total Ending Balance | $ 3,810 | $ 3,860 | $ 3,810 | |