v3.26.1
Allowance for Credit Losses - Activity in ACL by Class of Loans and Leases (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Dec. 31, 2025
Rollforward of the Allowance for Credit Losses          
Balance at beginning of period $ 169,318 $ 166,612 $ 168,468 $ 160,393 $ 160,393
Charge-offs (6,282) (5,329) (13,751) (11,827)  
Recoveries 2,145 2,042 4,714 4,759  
Provision (benefit) 2,875 4,500 8,625 14,500  
Balance at end of period 168,056 167,825 168,056 167,825 168,468
Commercial Lending          
Rollforward of the Allowance for Credit Losses          
Charge-offs     (3,394)   (5,393)
Commercial and Industrial          
Rollforward of the Allowance for Credit Losses          
Balance at beginning of period 23,890 17,992 20,833 16,332 16,332
Charge-offs (769) (688) (3,394) (2,147) (4,731)
Recoveries 281 196 547 599  
Provision (benefit) (4,614) 2,561 802 5,277  
Balance at end of period 18,788 20,061 18,788 20,061 20,833
Commercial Real Estate          
Rollforward of the Allowance for Credit Losses          
Balance at beginning of period 37,965 39,370 38,757 40,624 40,624
Recoveries       251  
Provision (benefit) 984 (106) 192 (1,611)  
Balance at end of period 38,949 39,264 38,949 39,264 38,757
Construction          
Rollforward of the Allowance for Credit Losses          
Balance at beginning of period 7,240 9,511 7,605 8,570 8,570
Provision (benefit) 710 (566) 345 375  
Balance at end of period 7,950 8,945 7,950 8,945 7,605
Lease financing          
Rollforward of the Allowance for Credit Losses          
Balance at beginning of period 2,732 2,344 2,778 2,269 2,269
Charge-offs   (82)   (82) (662)
Recoveries     3    
Provision (benefit) (268) 81 (317) 156  
Balance at end of period 2,464 2,343 2,464 2,343 2,778
Residential mortgage          
Rollforward of the Allowance for Credit Losses          
Balance at beginning of period 37,404 34,374 36,384 39,230 39,230
Charge-offs     (23)   (30)
Recoveries 16 109 29 129  
Provision (benefit) (974) 3,482 33 (1,394)  
Balance at end of period 36,446 37,965 36,446 37,965 36,384
Residential mortgage | Home Equity Line          
Rollforward of the Allowance for Credit Losses          
Charge-offs     (23)   (30)
Home Equity Line          
Rollforward of the Allowance for Credit Losses          
Balance at beginning of period 14,728 10,270 15,192 10,205 10,205
Charge-offs (23) (16) (23) (30)  
Recoveries 28 32 67 96  
Provision (benefit) 569 904 66 919  
Balance at end of period 15,302 11,190 15,302 11,190 15,192
Consumer          
Rollforward of the Allowance for Credit Losses          
Balance at beginning of period 45,359 52,751 46,919 43,163 43,163
Charge-offs (5,490) (4,543) (10,334) (9,568) (19,473)
Recoveries 1,820 1,705 4,068 3,684  
Provision (benefit) 6,468 (1,856) 7,504 10,778  
Balance at end of period $ 48,157 $ 48,057 $ 48,157 $ 48,057 $ 46,919