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Regulatory & Capital Matters (Details)
$ in Millions
 9 Months Ended
Sep. 30, 2022
USD ($)
Dec. 31, 2021
Regulatory & Capital Matters    
Tier 1 capital leverage ratio (as a percent) 0.0770 0.0781
Risk-based capital ratio (as a percent) 0.1199 0.1255
Deferment of impact on retained earnings $ 2.9  
Subsidiaries [Member]    
Regulatory & Capital Matters    
Tier 1 capital leverage ratio (as a percent) 0.0924 0.0958
Risk-based capital ratio (as a percent) 0.1264 0.1346
Tier One leverage ratio, basis point decrease (as a percent) 0.34%  
Risk-based capital ratio, basis point decrease (as a percent) 0.82%  
Minimum | Subsidiaries [Member]    
Regulatory & Capital Matters    
Tier 1 capital leverage ratio (as a percent) 0.08  
Risk-based capital ratio (as a percent) 0.12  
Tier 1 capital leverage ratio, board-designated threshold 8.00%  
Total Capital Ratio, board-designated threshold (as a percent) 12.00%