v3.26.1
Segment Information (Details)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2026
USD ($)
Jun. 30, 2025
USD ($)
Jun. 30, 2026
USD ($)
segment
Jun. 30, 2025
USD ($)
Dec. 31, 2025
USD ($)
Segment Reporting [Abstract]          
Number of operating segments | segment     1    
Number of reportable segments | segment     1    
Segment Reporting [Line Items]          
Interest income $ 205,140 $ 171,570 $ 406,690 $ 352,165  
Reconciliation of revenue          
Service charges and fees 16,908 15,797 34,026 30,784  
Trust and other financial services income 9,449 7,948 18,067 15,858  
Less:          
Interest expense 58,202 52,126 117,270 104,903  
Less:          
Provision for credit losses     11,005 16,655  
Compensation and employee benefits 63,476 55,213 121,806 109,753  
Processing expenses 16,948 12,973 33,754 26,963  
Premises and occupancy costs 8,494 7,122 18,357 15,522  
Professional services 3,490 3,990 7,013 6,746  
Office operations 3,660 2,910 7,535 5,887  
Federal deposit insurance premiums   2,296 2,604 4,624  
Income tax expense 16,701 10,423 32,822 23,490  
Net income 53,546 33,675 104,082 77,133  
Other segment disclosures          
Interest income 205,140 171,570 406,690 352,165  
Interest expense 58,202 52,126 117,270 104,903  
Amortization 2,166 436 4,355 940  
Provision for credit losses     11,005 16,655  
Segment assets 17,207,139   17,207,139   $ 16,766,617
Banking Segment          
Segment Reporting [Line Items]          
Interest income 205,140 171,570 406,690 352,165  
Reconciliation of revenue          
Service charges and fees 16,908 15,797 34,026 30,784  
Trust and other financial services income 9,449 7,948 18,067 15,858  
Other revenue 7,872 7,193 14,718 12,651  
Consolidated revenues 239,369 202,508 473,501 411,458  
Less:          
Interest expense 58,202 52,126 117,270 104,903  
Segment net interest income and noninterest income 181,167 150,382 356,231 306,555  
Less:          
Provision for credit losses 6,637 8,744 11,006 16,655  
Compensation and employee benefits 63,476 55,213 121,806 109,753  
Processing expenses 16,948 12,973 33,754 26,963  
Premises and occupancy costs 8,494 7,122 18,357 15,522  
Professional services 3,490 3,990 7,013 6,746  
Office operations 3,660 2,910 7,535 5,887  
Federal deposit insurance premiums (291) 2,296 2,604 4,624  
Other segment items 8,506 13,036 17,252 19,782  
Income tax expense 16,701 10,423 32,822 23,490  
Net income 53,546 33,675 104,082 77,133  
Other segment disclosures          
Interest income 205,140 171,570 406,690 352,165  
Interest expense 58,202 52,126 117,270 104,903  
Depreciation 3,163 2,745 6,332 5,520  
Amortization 2,166 436 4,355 940  
Provision for credit losses 6,637 8,744 11,006 16,655  
Segment assets 17,207,139 14,485,107 17,207,139 14,485,107  
Expenditures for segment assets $ 5,556 $ 3,629 $ 9,864 $ 5,451