v3.26.1
Borrowings - Schedule of Long-Term Debt (Details) - USD ($)
$ in Thousands
Jun. 30, 2026
Dec. 31, 2025
Debt Instrument [Line Items]    
Subordinated fixed-to-floating rate notes $ 742,041 $ 744,718
Long-term debt 737,171 739,454
Senior Notes    
Debt Instrument [Line Items]    
Discount (273) (323)
Debt issuance cost (735) (869)
Subordinated Debt    
Debt Instrument [Line Items]    
Discount (2,413) (2,545)
Debt issuance cost (1,449) (1,527)
Junior Subordinated Debt    
Debt Instrument [Line Items]    
Subordinated fixed-to-floating rate notes $ 77,320 $ 77,320
Interest rate spread of LIBOR plus (as a percent) 2.95%  
Variable interest rate (as a percent) 6.89% 6.92%
Senior Notes Due 2029 | Senior Notes    
Debt Instrument [Line Items]    
Interest rate, fixed (as a percent) 4.10%  
Subordinated fixed-to-floating rate notes $ 314,721 $ 317,398
Hedge basis adjustment $ 14,700 17,400
Fixed-Rate Subordinated Notes Due 2035 | Subordinated Debt    
Debt Instrument [Line Items]    
Interest rate, fixed (as a percent) 5.784%  
Subordinated fixed-to-floating rate notes $ 350,000 $ 350,000