v3.26.1
Loans and Allowance for Credit Losses on Loans - Allowance Activity (Details) - USD ($)
$ in Thousands
 6 Months Ended 12 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Dec. 31, 2025
Allowance for Loan and Lease Losses [Roll Forward]      
Beginning balance $ 270,557 $ 271,709 $ 271,709
Provision for credit losses on loans 31,152 28,701  
Charge-offs 34,585 24,148 52,883
Recoveries 1,144 1,386  
Net charge-offs (recoveries) 33,441 22,762  
Ending balance 268,268 277,648 270,557
Commercial      
Allowance for Loan and Lease Losses [Roll Forward]      
Beginning balance 202,029 198,423 198,423
Provision for credit losses on loans 45,871 31,737  
Charge-offs 27,487 23,217  
Recoveries 953 969  
Net charge-offs (recoveries) 26,534 22,248  
Ending balance 221,366 207,912 202,029
Mortgage finance      
Allowance for Loan and Lease Losses [Roll Forward]      
Beginning balance 6,221 2,755 2,755
Provision for credit losses on loans (3,098) 7,875  
Charge-offs 0 0  
Recoveries 0 0  
Net charge-offs (recoveries) 0 0  
Ending balance 3,123 10,630 6,221
Commercial real estate      
Allowance for Loan and Lease Losses [Roll Forward]      
Beginning balance 60,559 68,825 68,825
Provision for credit losses on loans (11,669) (11,011)  
Charge-offs 7,098 931  
Recoveries 184 413  
Net charge-offs (recoveries) 6,914 518  
Ending balance 41,976 57,296 60,559
Consumer      
Allowance for Loan and Lease Losses [Roll Forward]      
Beginning balance 1,748 1,706 1,706
Provision for credit losses on loans 48 100  
Charge-offs 0 0  
Recoveries 7 4  
Net charge-offs (recoveries) (7) (4)  
Ending balance $ 1,803 $ 1,810 $ 1,748