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Regulatory Capital Requirements (Tables)
 9 Months Ended
Sep. 30, 2025
Regulatory Capital Requirements under Banking Regulations [Abstract]  
Summary of Compliance with Regulatory Capital Requirements under Banking Regulations
The following table presents the capital amounts and ratios for the Company and the Bank as of September 30, 2025 and December 31, 2024.
September 30, 2025December 31, 2024
AmountRegulatory Minimum Ratio + Capital Conservation Buffer
To Be Well-Capitalized Under Prompt Corrective Action Regulation(1)
Amount
($ in thousands)
The Company Amounts
Common Equity Tier 1 Capital$496,709 $340,707 N/A$458,258 
Tier 1 Capital526,794 413,715 N/A488,105 
Total Capital627,055 511,060 N/A591,228 
Risk-Weighted Assets4,867,237 237,716 N/A4,852,564 
The Company Ratios
Common Equity Tier 1 Capital to Risk-Weighted Assets (“RWA”)10.21 %7.00 %N/A9.44 %
Tier 1 Capital to RWA10.82 8.50 N/A10.06 
Total Capital to RWA12.88 10.50 N/A12.18 
Tier 1 Capital to Average Assets (Leverage)(2)
8.86 4.00 N/A8.02 
The Bank Amounts
Common Equity Tier 1 Capital$559,212 $340,541 $316,217 $521,453 
Tier 1 Capital559,212 413,514 389,190 521,453 
Total Capital620,034 510,811 486,487 580,706 
Risk-Weighted Assets4,864,871 237,596 296,995 4,851,903 
The Bank Ratios
Common Equity Tier 1 Capital to RWA11.49 %7.00 %6.50 %10.75 %
Tier 1 Capital to RWA11.49 8.50 8.00 10.75 
Total Capital to RWA12.75 10.50 10.00 11.97 
Tier 1 Capital to Average Assets (Leverage)(2)
9.41 4.00 5.00 8.58 
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(1)Applies to the Bank only.
(2)Tier 1 Capital to Average Assets (Leverage) has no capital conservation buffer defined. The PCA well-capitalized threshold is defined as 5.00%.