v3.25.2
Fair Value of Assets and Liabilities - Carrying Amount and Estimated Fair Value of Financial Instruments Not Carried at Fair Value (Details) - USD ($)
$ in Thousands
Jun. 30, 2025
Dec. 31, 2024
Carrying Amount    
Financial assets    
Cash and cash equivalents $ 915,507 $ 848,408
Debt securities, held-to-maturity 3,206,133 3,294,847
Loans receivable, net of ACL 18,305,941 17,055,808
Total financial assets 22,427,581 21,199,063
Financial liabilities    
Term deposits 3,238,576 3,139,821
FHLB advances 1,255,088 1,800,000
Repurchase agreements and other borrowed funds 2,057,999 1,860,816
Subordinated debentures 157,127 133,105
Total financial liabilities 6,708,790 6,933,742
Estimated Fair Value | Level 1    
Financial assets    
Cash and cash equivalents 915,507 848,408
Debt securities, held-to-maturity 0 0
Loans receivable, net of ACL 0 0
Total financial assets 915,507 848,408
Financial liabilities    
Term deposits 0 0
FHLB advances 0 0
Repurchase agreements and other borrowed funds 0 0
Subordinated debentures 0 0
Total financial liabilities 0 0
Estimated Fair Value | Level 2    
Financial assets    
Cash and cash equivalents 0 0
Debt securities, held-to-maturity 2,871,520 2,968,570
Loans receivable, net of ACL 0 0
Total financial assets 2,871,520 2,968,570
Financial liabilities    
Term deposits 3,268,762 3,176,722
FHLB advances 1,222,487 1,797,310
Repurchase agreements and other borrowed funds 2,057,999 1,860,816
Subordinated debentures 148,127 122,785
Total financial liabilities 6,697,375 6,957,633
Estimated Fair Value | Level 3    
Financial assets    
Cash and cash equivalents 0 0
Debt securities, held-to-maturity 0 0
Loans receivable, net of ACL 18,489,016 17,017,298
Total financial assets 18,489,016 17,017,298
Financial liabilities    
Term deposits 0 0
FHLB advances 0 0
Repurchase agreements and other borrowed funds 0 0
Subordinated debentures 0 0
Total financial liabilities $ 0 $ 0