v3.26.1
Capital (Tables)
6 Months Ended
Jun. 30, 2026
Banking Regulation, Total Capital [Abstract]  
Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations [Table Text Block] The following table summarizes the Bank’s compliance with those capital requirements as of June 30, 2026 and December 31, 2025 (dollars in thousands):
June 30, 2026December 31, 2025
RequiredActualRequiredActual
Regulatory capital requirements:
Risk-based capital$1,294,266 $6,614,069 $1,230,921 $6,573,370 
Total capital$4,310,739 $6,614,069 $4,340,481 $6,573,370 
Total capital-to-assets ratio4.00 %6.14 %4.00 %6.06 %
Leverage capital$5,388,423 $9,921,103 $5,425,601 $9,860,055 
Leverage capital-to-assets ratio5.00 %9.21 %5.00 %9.09 %