v3.26.3
Loans - Summary of Aging of Recorded Investment in Past Due Portfolio Loans by Portfolio Class and Category (Details) - USD ($)
$ in Thousands
Sep. 30, 2026
Dec. 31, 2025
Financing Receivable, Past Due [Line Items]    
Loans, including unearned loan fees $ 12,344,705 $ 11,800,338
Loans, including unearned loan fees 12,200,186 11,660,316
Non-Covered Loans    
Financing Receivable, Past Due [Line Items]    
Loans, including unearned loan fees 12,347,329 11,801,093
Loans, including unearned loan fees 12,344,705 11,800,338
Unearned loan fees, net (2,624) (755)
Loans, before unearned loan fees, after allowance 12,347,329 11,801,093
Non-Covered Loans | C&I    
Financing Receivable, Past Due [Line Items]    
Loans, including unearned loan fees 5,472,681 5,236,473
Loans, including unearned loan fees 5,472,681 5,236,473
Non-Covered Loans | Commercial - investor owned    
Financing Receivable, Past Due [Line Items]    
Loans, including unearned loan fees 3,237,616 2,986,906
Loans, including unearned loan fees 3,237,616 2,986,906
Non-Covered Loans | Commercial - owner occupied    
Financing Receivable, Past Due [Line Items]    
Loans, including unearned loan fees 2,482,819 2,460,761
Loans, including unearned loan fees 2,482,819 2,460,761
Non-Covered Loans | Construction and land development    
Financing Receivable, Past Due [Line Items]    
Loans, including unearned loan fees 747,202 689,357
Loans, including unearned loan fees 747,202 689,357
Non-Covered Loans | Residential    
Financing Receivable, Past Due [Line Items]    
Loans, including unearned loan fees 356,507 367,127
Loans, including unearned loan fees 356,507 367,127
Non-Covered Loans | Consumer    
Financing Receivable, Past Due [Line Items]    
Loans, including unearned loan fees 50,504 60,469
Loans, including unearned loan fees 50,504 60,469
Total Past Due | Non-Covered Loans    
Financing Receivable, Past Due [Line Items]    
Loans, before unearned loan fees 222,874 115,726
Total Past Due | Non-Covered Loans | C&I    
Financing Receivable, Past Due [Line Items]    
Loans, including unearned loan fees 52,415 32,149
Total Past Due | Non-Covered Loans | Commercial - investor owned    
Financing Receivable, Past Due [Line Items]    
Loans, including unearned loan fees 75,218 41,690
Total Past Due | Non-Covered Loans | Commercial - owner occupied    
Financing Receivable, Past Due [Line Items]    
Loans, including unearned loan fees 67,723 26,384
Total Past Due | Non-Covered Loans | Construction and land development    
Financing Receivable, Past Due [Line Items]    
Loans, including unearned loan fees 21,464 5,464
Total Past Due | Non-Covered Loans | Residential    
Financing Receivable, Past Due [Line Items]    
Loans, including unearned loan fees 5,950 9,973
Total Past Due | Non-Covered Loans | Consumer    
Financing Receivable, Past Due [Line Items]    
Loans, including unearned loan fees 104 66
30-89 Days Past Due | Non-Covered Loans    
Financing Receivable, Past Due [Line Items]    
Loans, before unearned loan fees 122,561 28,118
30-89 Days Past Due | Non-Covered Loans | C&I    
Financing Receivable, Past Due [Line Items]    
Loans, including unearned loan fees 23,055 6,822
30-89 Days Past Due | Non-Covered Loans | Commercial - investor owned    
Financing Receivable, Past Due [Line Items]    
Loans, including unearned loan fees 47,246 3,627
30-89 Days Past Due | Non-Covered Loans | Commercial - owner occupied    
Financing Receivable, Past Due [Line Items]    
Loans, including unearned loan fees 26,604 5,274
30-89 Days Past Due | Non-Covered Loans | Construction and land development    
Financing Receivable, Past Due [Line Items]    
Loans, including unearned loan fees 21,464 4,881
30-89 Days Past Due | Non-Covered Loans | Residential    
Financing Receivable, Past Due [Line Items]    
Loans, including unearned loan fees 4,097 7,457
30-89 Days Past Due | Non-Covered Loans | Consumer    
Financing Receivable, Past Due [Line Items]    
Loans, including unearned loan fees 95 57
90 or More Days Past Due | Non-Covered Loans    
Financing Receivable, Past Due [Line Items]    
Loans, before unearned loan fees 100,313 87,608
90 or More Days Past Due | Non-Covered Loans | C&I    
Financing Receivable, Past Due [Line Items]    
Loans, including unearned loan fees 29,360 25,327
90 or More Days Past Due | Non-Covered Loans | Commercial - investor owned    
Financing Receivable, Past Due [Line Items]    
Loans, including unearned loan fees 27,972 38,063
90 or More Days Past Due | Non-Covered Loans | Commercial - owner occupied    
Financing Receivable, Past Due [Line Items]    
Loans, including unearned loan fees 41,119 21,110
90 or More Days Past Due | Non-Covered Loans | Construction and land development    
Financing Receivable, Past Due [Line Items]    
Loans, including unearned loan fees 0 583
90 or More Days Past Due | Non-Covered Loans | Residential    
Financing Receivable, Past Due [Line Items]    
Loans, including unearned loan fees 1,853 2,516
90 or More Days Past Due | Non-Covered Loans | Consumer    
Financing Receivable, Past Due [Line Items]    
Loans, including unearned loan fees 9 9
Current | Non-Covered Loans    
Financing Receivable, Past Due [Line Items]    
Loans, before unearned loan fees 12,124,455 11,685,367
Current | Non-Covered Loans | C&I    
Financing Receivable, Past Due [Line Items]    
Loans, including unearned loan fees 5,420,266 5,204,324
Current | Non-Covered Loans | Commercial - investor owned    
Financing Receivable, Past Due [Line Items]    
Loans, including unearned loan fees 3,162,398 2,945,216
Current | Non-Covered Loans | Commercial - owner occupied    
Financing Receivable, Past Due [Line Items]    
Loans, including unearned loan fees 2,415,096 2,434,377
Current | Non-Covered Loans | Construction and land development    
Financing Receivable, Past Due [Line Items]    
Loans, including unearned loan fees 725,738 683,893
Current | Non-Covered Loans | Residential    
Financing Receivable, Past Due [Line Items]    
Loans, including unearned loan fees 350,557 357,154
Current | Non-Covered Loans | Consumer    
Financing Receivable, Past Due [Line Items]    
Loans, including unearned loan fees $ 50,400 $ 60,403