v3.26.1
Segment Reporting - Schedule of Balance Sheet Information by Segment (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Dec. 31, 2025
Dec. 31, 2024
Segment Reporting [Line Items]            
Goodwill $ 2,898,463   $ 2,898,463   $ 2,897,522 $ 2,868,068
Total assets 85,948,639   85,948,639   84,073,663  
Net interest income 632,744 $ 621,182 1,267,147 $ 1,233,374    
Non-interest income 107,247 94,657 208,710 187,263    
Total segment revenues 739,991 715,839 1,475,857 1,420,637    
Compensation and benefits 224,314 199,930 447,220 398,575    
Occupancy 19,749 19,337 39,235 39,054    
Technology and equipment 50,504 45,932 100,135 93,651    
Marketing 5,203 5,171 9,902 9,198    
Segment pre-tax, pre-provision net revenue 355,029 370,125 711,786 731,279    
Total consolidated provision for credit losses 31,500 46,500 85,500 124,000    
Total consolidated income before income taxes 323,529 323,625 626,286 607,279    
Intangible assets amortization 9,005 9,093 18,191 18,330    
Operating Segments            
Segment Reporting [Line Items]            
Net interest income 634,971 628,815 1,270,304 1,246,363    
Non-interest income 91,066 83,906 180,646 168,458    
Total segment revenues 726,037 712,721 1,450,950 1,414,821    
Segment pre-tax, pre-provision net revenue 419,865 425,852 838,438 842,994    
Operating Segments | Commercial Banking            
Segment Reporting [Line Items]            
Goodwill 1,960,363   1,960,363   1,960,363  
Total assets 47,487,049   47,487,049   46,169,398  
Net interest income 324,871 318,518 651,848 637,641    
Non-interest income 34,416 30,628 66,585 59,586    
Total segment revenues 359,287 349,146 718,433 697,227    
Compensation and benefits 56,028 50,807 114,457 102,916    
Occupancy 0 0 0 0    
Technology and equipment 2,727 2,336 5,241 4,447    
Marketing 0 0 0 0    
Other segment items 57,288 55,229 114,666 107,591    
Segment pre-tax, pre-provision net revenue 243,244 240,774 484,069 482,273    
Occupancy and technology depreciation 300 100 600 100    
Intangible assets amortization 2,500 2,700 5,000 5,500    
Operating Segments | Healthcare Financial Services            
Segment Reporting [Line Items]            
Goodwill 316,065   316,065   315,124  
Total assets 524,356   524,356   535,453  
Net interest income 100,869 97,625 200,902 193,986    
Non-interest income 31,242 28,687 65,464 58,077    
Total segment revenues 132,111 126,312 266,366 252,063    
Compensation and benefits 26,702 24,171 51,975 47,508    
Occupancy 0 0 0 0    
Technology and equipment 7,705 7,524 16,114 16,288    
Marketing 0 0 0 0    
Other segment items 26,464 23,758 54,534 47,377    
Segment pre-tax, pre-provision net revenue 71,240 70,859 143,743 140,890    
Occupancy and technology depreciation 1,400 1,500 3,000 2,900    
Intangible assets amortization 3,700 3,400 7,600 6,900    
Operating Segments | Consumer Banking            
Segment Reporting [Line Items]            
Goodwill 622,035   622,035   622,035  
Total assets 13,948,059   13,948,059   13,871,139  
Net interest income 209,231 212,672 417,554 414,736    
Non-interest income 25,408 24,591 48,597 50,795    
Total segment revenues 234,639 237,263 466,151 465,531    
Compensation and benefits 39,954 37,285 79,705 74,569    
Occupancy 14,401 13,835 28,602 28,183    
Technology and equipment 2,910 2,917 5,757 5,966    
Marketing 2,125 2,043 3,480 4,025    
Other segment items 69,868 66,964 137,981 132,957    
Segment pre-tax, pre-provision net revenue 105,381 114,219 210,626 219,831    
Occupancy and technology depreciation 3,000 2,400 5,800 5,000    
Intangible assets amortization 1,800 1,800 3,600 3,600    
Corporate and Reconciling            
Segment Reporting [Line Items]            
Goodwill 0   0   0  
Total assets 23,989,175   23,989,175   $ 23,497,673  
Non-interest income 16,181 10,751 28,064 18,805    
Total segment revenues 13,954 3,118 24,907 5,816    
Segment pre-tax, pre-provision net revenue $ (64,836) $ (55,727) $ (126,652) $ (111,715)