v3.26.1
Other Borrowings and Subordinated Notes and Debentures - Schedule of Debt Components (Details) - USD ($)
$ in Thousands
 1 Months Ended 6 Months Ended
Sep. 30, 2025
Jun. 30, 2026
Dec. 31, 2025
Debt Instrument [Line Items]      
Total other borrowings and subordinated debt   $ 1,253,284 $ 619,967
Fair Value Hedges      
Debt Instrument [Line Items]      
Valuation adjustments on hedged subordinated notes payable   (9,339) (3,455)
FHLB advances, net of discount, due 2026 to 2032, 3.75% to 5.53% secured by real estate loans      
Debt Instrument [Line Items]      
Total other borrowings and subordinated debt   926,507 286,597
Other long-term debt      
Debt Instrument [Line Items]      
Total other borrowings and subordinated debt   14,749 15,656
Total other borrowings      
Debt Instrument [Line Items]      
Total other borrowings and subordinated debt   941,256 302,253
Subordinated debentures      
Debt Instrument [Line Items]      
Fixed rate (as percent) 6.25%    
Floating rate (as percent) 3.02%    
Subordinated debentures | Subordinated notes payable, due 10/1/2035, fixed-to-floating rate (fixed rate of 6.25% through 9/30/2030, floating rate of 3.02% above the three-month SOFR rate, reset quarterly)      
Debt Instrument [Line Items]      
Long-term debt, gross   $ 325,000 325,000
Fixed rate (as percent)   6.25%  
Floating rate (as percent)   3.02%  
Total subordinated notes and debentures      
Debt Instrument [Line Items]      
Total other borrowings and subordinated debt   $ 312,028 317,714
Unamortized debt issuance costs   $ (3,633) $ (3,831)
Minimum | FHLB advances, net of discount, due 2026 to 2032, 3.75% to 5.53% secured by real estate loans      
Debt Instrument [Line Items]      
Fixed rate (as percent)   3.75%  
Maximum | FHLB advances, net of discount, due 2026 to 2032, 3.75% to 5.53% secured by real estate loans      
Debt Instrument [Line Items]      
Fixed rate (as percent)   5.53%