v3.25.2
Segment Information - Schedule of Segment Information (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Dec. 31, 2024
Segment Reporting Information [Line Items]          
Interest income $ 920,908 $ 849,979 $ 1,807,873 $ 1,655,492  
Interest expense 374,214 379,369 734,705 720,688  
Net interest income 546,694 470,610 1,073,168 934,804  
Provision for credit losses 22,234 40,061 46,197 61,734  
Non-interest income 124,089 121,147 240,723 261,727  
Salaries 123,174 113,860 247,091 226,032  
Commissions and incentive compensation 55,871 52,151 108,407 103,152  
Benefits 40,496 32,530 75,569 64,530  
Other segment expenses 161,920 141,812 316,484 279,784  
Total non-interest expense 381,461 340,353 747,551 673,498  
Income before taxes 267,088 211,343 520,143 461,299  
Income tax expense 71,561 58,955 135,577 121,617  
Net income 195,527 152,388 384,566 339,682  
Total assets at period end 68,983,318 59,781,516 68,983,318 59,781,516 $ 64,879,668
Operating Segments          
Segment Reporting Information [Line Items]          
Interest income 908,017 841,320 1,784,214 1,636,364  
Interest expense 374,214 379,369 734,705 720,688  
Net interest income 533,803 461,951 1,049,509 915,676  
Provision for credit losses 22,234 40,061 46,197 61,734  
Non-interest income 148,560 139,541 286,882 299,979  
Salaries 122,643 113,472 246,095 225,134  
Commissions and incentive compensation 55,871 52,151 108,407 103,152  
Benefits 40,496 32,530 75,569 64,530  
Other segment expenses 174,031 151,935 339,980 299,806  
Total non-interest expense 393,041 350,088 770,051 692,622  
Income before taxes 267,088 211,343 520,143 461,299  
Income tax expense 71,561 58,955 135,577 121,617  
Net income 195,527 152,388 384,566 339,682  
Total assets at period end 68,983,318 59,781,516 68,983,318 59,781,516  
Operating Segments | Community Banking          
Segment Reporting Information [Line Items]          
Interest income 800,316 725,514 1,569,284 1,417,411  
Interest expense 363,660 366,682 713,617 694,894  
Net interest income 436,656 358,832 855,667 722,517  
Provision for credit losses 20,478 36,325 42,906 56,717  
Non-interest income 75,498 71,619 148,991 146,255  
Salaries 96,902 88,294 195,488 174,976  
Commissions and incentive compensation 33,325 31,251 65,462 61,033  
Benefits 32,107 25,546 59,481 50,222  
Other segment expenses 139,710 121,123 272,200 237,723  
Total non-interest expense 302,044 266,214 592,631 523,954  
Income before taxes 189,632 127,912 369,121 288,101  
Income tax expense 50,499 36,677 95,718 76,819  
Net income 139,133 91,235 273,403 211,282  
Total assets at period end 55,924,843 47,611,508 55,924,843 47,611,508  
Operating Segments | Specialty Finance          
Segment Reporting Information [Line Items]          
Interest income 102,737 107,650 204,435 202,794  
Interest expense 10,427 12,459 20,818 25,321  
Net interest income 92,310 95,191 183,617 177,473  
Provision for credit losses 1,756 3,736 3,291 5,017  
Non-interest income 33,524 32,317 64,563 59,634  
Salaries 15,638 15,747 31,400 30,285  
Commissions and incentive compensation 9,976 8,580 19,017 17,219  
Benefits 5,906 4,601 10,624 8,915  
Other segment expenses 25,090 22,314 48,535 45,095  
Total non-interest expense 56,610 51,242 109,576 101,514  
Income before taxes 67,468 72,530 135,313 130,576  
Income tax expense 18,672 19,439 36,224 34,962  
Net income 48,796 53,091 99,089 95,614  
Total assets at period end 12,062,568 11,014,840 12,062,568 11,014,840  
Operating Segments | Wealth Management          
Segment Reporting Information [Line Items]          
Interest income 4,964 8,156 10,495 16,159  
Interest expense 127 228 270 473  
Net interest income 4,837 7,928 10,225 15,686  
Provision for credit losses 0 0 0 0  
Non-interest income 39,538 35,605 73,328 94,090  
Salaries 10,103 9,431 19,207 19,873  
Commissions and incentive compensation 12,570 12,320 23,928 24,900  
Benefits 2,483 2,383 5,464 5,393  
Other segment expenses 9,231 8,498 19,245 16,988  
Total non-interest expense 34,387 32,632 67,844 67,154  
Income before taxes 9,988 10,901 15,709 42,622  
Income tax expense 2,390 2,839 3,635 9,836  
Net income 7,598 8,062 12,074 32,786  
Total assets at period end 995,907 1,155,168 995,907 1,155,168  
Intersegment Eliminations          
Segment Reporting Information [Line Items]          
Interest income 12,891 8,659 23,659 19,128  
Interest expense 0 0 0 0  
Net interest income 12,891 8,659 23,659 19,128  
Provision for credit losses 0 0 0 0  
Non-interest income (24,471) (18,394) (46,159) (38,252)  
Salaries 531 388 996 898  
Commissions and incentive compensation 0 0 0 0  
Benefits 0 0 0 0  
Other segment expenses (12,111) (10,123) (23,496) (20,022)  
Total non-interest expense (11,580) (9,735) (22,500) (19,124)  
Income before taxes 0 0 0 0  
Income tax expense 0 0 0 0  
Net income 0 0 0 0  
Total assets at period end $ 0 $ 0 $ 0 $ 0