v3.26.1
Fair Value Measurements - Schedule of Estimated Fair Values and Related Carrying Amounts of Financial Instruments (Details) - USD ($)
$ in Thousands
Jun. 30, 2026
Dec. 31, 2025
Carrying Amount    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Cash and cash equivalents $ 589,484 $ 711,913
Interest bearing balances due from banks - time 100 100
Interest receivable 103,016 104,062
Federal funds purchased and securities sold under agreements to repurchase 46,216 21,383
Other borrowings 941,256 302,253
Subordinated notes and debentures 312,028 317,714
Interest payable 26,163 34,683
Carrying Amount | Noninterest bearing transaction accounts    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Deposits 4,350,474 4,330,211
Carrying Amount | Interest bearing transaction accounts and savings deposits    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Deposits 11,133,265 11,141,169
Carrying Amount | Time deposits    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Deposits 4,244,371 4,712,658
Carrying Amount | Loans, net    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Loans, net 17,824,142 17,267,802
Fair Value Measurements    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Cash and cash equivalents 589,484 711,913
Interest bearing balances due from banks - time 100 100
Interest receivable 103,016 104,062
Federal funds purchased and securities sold under agreements to repurchase 46,216 21,383
Other borrowings 940,406 301,500
Subordinated notes and debentures 327,350 328,419
Interest payable 26,163 34,683
Fair Value Measurements | Noninterest bearing transaction accounts    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Deposits 4,350,474 4,330,211
Fair Value Measurements | Interest bearing transaction accounts and savings deposits    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Deposits 11,133,265 11,141,169
Fair Value Measurements | Time deposits    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Deposits 4,229,367 4,704,667
Fair Value Measurements | Loans, net    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Loans, net 17,635,637 17,056,124
Fair Value Measurements | Level 1    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Cash and cash equivalents 589,484 711,913
Interest bearing balances due from banks - time 0 0
Interest receivable 0 0
Federal funds purchased and securities sold under agreements to repurchase 0 0
Other borrowings 0 0
Subordinated notes and debentures 0 0
Interest payable 0 0
Fair Value Measurements | Level 1 | Noninterest bearing transaction accounts    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Deposits 0 0
Fair Value Measurements | Level 1 | Interest bearing transaction accounts and savings deposits    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Deposits 0 0
Fair Value Measurements | Level 1 | Time deposits    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Deposits 0 0
Fair Value Measurements | Level 1 | Loans, net    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Loans, net 0 0
Fair Value Measurements | Level 2    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Cash and cash equivalents 0 0
Interest bearing balances due from banks - time 100 100
Interest receivable 103,016 104,062
Federal funds purchased and securities sold under agreements to repurchase 46,216 21,383
Other borrowings 940,406 301,500
Subordinated notes and debentures 327,350 328,419
Interest payable 26,163 34,683
Fair Value Measurements | Level 2 | Noninterest bearing transaction accounts    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Deposits 4,350,474 4,330,211
Fair Value Measurements | Level 2 | Interest bearing transaction accounts and savings deposits    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Deposits 11,133,265 11,141,169
Fair Value Measurements | Level 2 | Time deposits    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Deposits 0 0
Fair Value Measurements | Level 2 | Loans, net    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Loans, net 0 0
Fair Value Measurements | Level 3    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Cash and cash equivalents 0 0
Interest bearing balances due from banks - time 0 0
Interest receivable 0 0
Federal funds purchased and securities sold under agreements to repurchase 0 0
Other borrowings 0 0
Subordinated notes and debentures 0 0
Interest payable 0 0
Fair Value Measurements | Level 3 | Noninterest bearing transaction accounts    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Deposits 0 0
Fair Value Measurements | Level 3 | Interest bearing transaction accounts and savings deposits    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Deposits 0 0
Fair Value Measurements | Level 3 | Time deposits    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Deposits 4,229,367 4,704,667
Fair Value Measurements | Level 3 | Loans, net    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Loans, net $ 17,635,637 $ 17,056,124