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Other Borrowings and Subordinated Notes and Debentures - Schedule of Debt Components (Details) - USD ($)
$ in Thousands
 6 Months Ended 27 Months Ended
Jun. 30, 2025
Jun. 30, 2025
Dec. 31, 2024
Mar. 31, 2018
Debt Instrument [Line Items]        
Total other borrowings and subordinated debt $ 1,000,718 $ 1,000,718 $ 1,111,665  
FHLB advances, net of discount, due 2025 to 2033, 4.38% to 5.53% secured by real estate loans        
Debt Instrument [Line Items]        
Total other borrowings and subordinated debt 617,800 617,800 727,945  
Other long-term debt        
Debt Instrument [Line Items]        
Total other borrowings and subordinated debt 16,549 16,549 17,427  
Total other borrowings        
Debt Instrument [Line Items]        
Total other borrowings and subordinated debt 634,349 $ 634,349 745,372  
Subordinated notes        
Debt Instrument [Line Items]        
Fixed rate (as percent)       5.00%
Subordinated notes | LIBOR        
Debt Instrument [Line Items]        
Floating rate (as percent)   2.15%    
Subordinated notes | SOFR        
Debt Instrument [Line Items]        
Floating rate (as percent)   0.26161%    
Subordinated notes | Subordinated notes payable, due 4/1/2028, fixed-to-floating rate (fixed rate of 5.00% through 3/31/2023, floating rate of 2.15% above the three month LIBOR rate, reset quarterly)        
Debt Instrument [Line Items]        
Long-term debt, gross $ 330,000 $ 330,000 330,000  
Fixed rate (as percent) 5.00% 5.00%    
Subordinated notes | Subordinated notes payable, due 4/1/2028, fixed-to-floating rate (fixed rate of 5.00% through 3/31/2023, floating rate of 2.15% above the three month LIBOR rate, reset quarterly) | LIBOR        
Debt Instrument [Line Items]        
Floating rate (as percent) 2.15%      
Subordinated notes | Subordinated notes payable, net of premium adjustments, due 7/31/2030, fixed-to-floating rate (fixed rate of 6.00% through 7/30/2025, floating rate of 5.92% above the three-month SOFR rate, reset quarterly)        
Debt Instrument [Line Items]        
Long-term debt, gross $ 37,000 $ 37,000 37,057  
Fixed rate (as percent) 6.00% 6.00%    
Subordinated notes | Subordinated notes payable, net of premium adjustments, due 7/31/2030, fixed-to-floating rate (fixed rate of 6.00% through 7/30/2025, floating rate of 5.92% above the three-month SOFR rate, reset quarterly) | SOFR        
Debt Instrument [Line Items]        
Floating rate (as percent) 5.92%      
Total subordinated notes and debentures        
Debt Instrument [Line Items]        
Total other borrowings and subordinated debt $ 366,369 $ 366,369 366,293  
Unamortized debt issuance costs $ (631) $ (631) $ (764)  
Minimum | FHLB advances, net of discount, due 2025 to 2033, 4.38% to 5.53% secured by real estate loans        
Debt Instrument [Line Items]        
Fixed rate (as percent) 4.38% 4.38%    
Maximum | FHLB advances, net of discount, due 2025 to 2033, 4.38% to 5.53% secured by real estate loans        
Debt Instrument [Line Items]        
Fixed rate (as percent) 5.53% 5.53%