Regulatory & Capital Matters (Details) $ in Millions |
Dec. 31, 2021
USD ($)
|
Dec. 31, 2020 |
|---|---|---|
| Regulatory & Capital Matters | ||
| Tier 1 capital leverage ratio (as a percent) | 7.81 | 10.21 |
| Risk-based capital ratio (as a percent) | 12.55 | 14.26 |
| Phase out of impact of allowance for credit loss | $ 3.8 | |
| Deferment of impact on retained earnings | $ 3.8 | |
| Subsidiaries [Member] | ||
| Regulatory & Capital Matters | ||
| Tier 1 capital leverage ratio (as a percent) | 9.58 | 10.74 |
| Risk-based capital ratio (as a percent) | 13.46 | 15.00 |
| Minimum | Subsidiaries [Member] | ||
| Regulatory & Capital Matters | ||
| Tier 1 capital leverage ratio (as a percent) | 8 | |
| Risk-based capital ratio (as a percent) | 12 |