Commitments and Contingent Liabilities - Corporation's Reserve for Unfunded Commitments (Details) - USD ($) $ in Thousands |
3 Months Ended | |
|---|---|---|
Mar. 31, 2026 |
Mar. 31, 2025 |
|
| Commitments and Contingent Liabilities | ||
| Balance at the beginning of period | $ 1,600 | $ 1,800 |
| Provision charged to operations | 150 | (50) |
| Total | $ 1,750 | $ 1,750 |