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Regulatory & Capital Matters (Details)
$ in Thousands
 9 Months Ended
Sep. 30, 2024
USD ($)
Dec. 31, 2023
Regulatory & Capital Matters    
Tier 1 capital leverage ratio (as a percent) 0.1138 0.1006
Risk-based capital ratio (as a percent) 0.1562 0.1406
Deferment of impact on retained earnings $ 951,000  
Subsidiaries    
Regulatory & Capital Matters    
Tier 1 capital leverage ratio (as a percent) 0.1146 0.1041
Risk-based capital ratio (as a percent) 0.1445 0.1324
Tier One leverage ratio, basis point increase (as a percent) 1.05%  
Risk-based capital ratio, basis point increase (as a percent) 1.21%  
Minimum | Subsidiaries    
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%