v3.26.1
Regulatory Capital (Tables)
6 Months Ended
Jun. 30, 2026
Banking and Thrift, Other Disclosure [Abstract]  
Schedule of Compliance with Regulatory Capital Requirements Under Banking Regulations
(Dollars in thousands)Actual
U.S. Basel III Minimum
Requirements Plus Buffer(1)(2)
AmountRatioAmountRatio
As of June 30, 2026:
Common Equity Tier 1 Capital (to Risk-Weighted Assets)$2,951,103 11.8 %$1,752,917 >7.0 %
Tier 1 Capital (to Risk-Weighted Assets)$2,951,103 11.8 %$2,128,543 >8.5 %
Total Capital (to Risk-Weighted Assets)$3,277,882 13.1 %$2,629,376 >10.5 %
Tier 1 Capital (to Average Assets)$2,951,103 10.2 %

$1,161,093 >4.0 %
As of December 31, 2025:
Common Equity Tier 1 Capital (to Risk-Weighted Assets)$2,929,973 11.1 %$1,849,590 >7.0 %
Tier 1 Capital (to Risk-Weighted Assets)$2,929,973 11.1 %$2,245,930 >8.5 %
Total Capital (to Risk-Weighted Assets)$3,274,883 12.4 %$2,774,384 >10.5 %
Tier 1 Capital (to Average Assets)$2,929,973 9.9 %$1,186,335 >4.0 %

             
(1)    Reflects the U.S. Basel III minimum required ratio plus the applicable capital conservation buffer.
(2)    The Bank’s regulatory capital ratios also exceeded all applicable standards for the Bank to qualify as “well capitalized” under the prompt corrective action framework.