XML 99 R88.htm IDEA: XBRL DOCUMENT v3.25.3
Fair Value - Estimated fair value and related carrying amount, of the Company's financial instruments (Details) - USD ($)
$ in Thousands
 9 Months Ended 12 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Dec. 31, 2024
Financial assets:      
Trading securities $ 107,519   $ 102,932
Financial liabilities:      
Other derivative financial instruments (mortgage banking related) (325,835) $ (198,292)  
Carrying Amount      
Financial assets:      
Cash and cash equivalents 3,144,455   1,392,067
Trading securities 107,519   102,932
Investment securities 8,505,745   6,798,876
Loans held for sale 346,673   279,426
Loans, net of allowance for credit losses 47,077,778   33,437,647
Accrued interest receivable 235,522   163,402
Mortgage servicing rights 84,491   89,795
SBA servicing asset 5,659   6,028
Interest rate swap - non-designated hedge 225,142   160,407
Other derivative financial instruments (mortgage banking related) $ 1,217   $ 1,083
Derivative Asset, Statement of Financial Position [Extensible Enumeration] Derivative Asset, Noncurrent   Derivative Asset, Noncurrent
Financial liabilities:      
Noninterest-bearing $ 13,430,459   $ 10,192,117
Interest-bearing other than time deposits 33,011,287   23,703,027
Time deposits 7,631,523   4,165,722
Federal funds purchased and securities sold under agreements to repurchase 594,092   514,912
Corporate and subordinated debentures 696,429   391,534
Accrued interest payable 47,788   40,739
Interest rate swap - non-designated hedge 560,360   878,046
Other derivative financial instruments (mortgage banking related) 1,348   1,809
Fair Value      
Financial assets:      
Cash and cash equivalents 3,144,455   1,392,067
Trading securities 107,519   102,932
Investment securities 8,174,505   6,378,734
Loans held for sale 349,462   281,662
Loans, net of allowance for credit losses 46,708,056   32,448,618
Accrued interest receivable 235,522   163,402
Mortgage servicing rights 84,491   89,795
SBA servicing asset 5,659   6,028
Interest rate swap - non-designated hedge 225,142   160,407
Other derivative financial instruments (mortgage banking related) 1,217   1,083
Financial liabilities:      
Noninterest-bearing 13,430,459   10,192,117
Interest-bearing other than time deposits 33,011,287   23,703,027
Time deposits 7,614,181   4,145,687
Federal funds purchased and securities sold under agreements to repurchase 594,092   514,912
Corporate and subordinated debentures 693,140   377,616
Accrued interest payable 47,788   40,739
Interest rate swap - non-designated hedge 560,360   878,046
Other derivative financial instruments (mortgage banking related) 1,348   1,809
Quoted Prices In Active Markets for Identical Assets (Level 1)      
Financial assets:      
Cash and cash equivalents 3,144,455   1,392,067
Investment securities 274,883   187,266
Significant Other Observable Inputs (Level 2)      
Financial assets:      
Trading securities 107,519   102,932
Investment securities 7,808,287   6,155,120
Loans held for sale 349,462   281,662
Accrued interest receivable 35,312   25,035
Interest rate swap - non-designated hedge 225,142   160,407
Other derivative financial instruments (mortgage banking related) 1,217   1,083
Financial liabilities:      
Noninterest-bearing 13,430,459   10,192,117
Interest-bearing other than time deposits 33,011,287   23,703,027
Time deposits 7,614,181   4,145,687
Federal funds purchased and securities sold under agreements to repurchase 594,092   514,912
Corporate and subordinated debentures 693,140   377,616
Accrued interest payable 47,788   40,739
Interest rate swap - non-designated hedge 560,360   878,046
Other derivative financial instruments (mortgage banking related) 1,348   1,809
Significant Unobservable Inputs (Level 3)      
Financial assets:      
Investment securities 91,335   36,348
Loans, net of allowance for credit losses 46,708,056   32,448,618
Accrued interest receivable 200,210   138,367
Mortgage servicing rights 84,491   89,795
SBA servicing asset $ 5,659   $ 6,028