v3.26.1
Allowance for Credit Losses (Details)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2026
USD ($)
item
Jun. 30, 2025
USD ($)
Jun. 30, 2026
USD ($)
item
Jun. 30, 2025
USD ($)
Allowance for credit losses        
Number of classes existing in loan and lease portfolio | item 9   9  
Changes in allowance for loan and lease losses        
Balance at the beginning of the period $ 164,898 $ 157,470 $ 161,846 $ 155,540
Charge-offs 1,592 3,065 6,764 4,989
Recoveries 1,070 1,195 2,284 2,937
Net charge-offs (recoveries) 522 1,870 4,480 2,052
Provision (recovery of provision) 1,978 7,884 8,988 9,996
Balance at the end of the period 166,354 163,484 166,354 163,484
Commercial and agricultural        
Changes in allowance for loan and lease losses        
Balance at the beginning of the period 23,027 21,912 21,983 21,316
Charge-offs 597 439 752 854
Recoveries 441 519 997 801
Net charge-offs (recoveries) 156 (80) (245) 53
Provision (recovery of provision) 1,014 2,347 1,657 3,076
Balance at the end of the period 23,885 24,339 23,885 24,339
Renewable energy        
Changes in allowance for loan and lease losses        
Balance at the beginning of the period 12,942 8,865 11,833 8,562
Charge-offs 0 0 0 0
Recoveries 0 0 0 0
Net charge-offs (recoveries) 0 0 0 0
Provision (recovery of provision) 509 1,179 1,618 1,482
Balance at the end of the period 13,451 10,044 13,451 10,044
Auto and light truck        
Changes in allowance for loan and lease losses        
Balance at the beginning of the period 18,938 18,657 21,653 18,437
Charge-offs 13 1,500 3,767 1,840
Recoveries 501 364 973 1,254
Net charge-offs (recoveries) (488) 1,136 2,794 586
Provision (recovery of provision) (118) 3,344 449 3,014
Balance at the end of the period 19,308 20,865 19,308 20,865
Medium and heavy duty truck        
Changes in allowance for loan and lease losses        
Balance at the beginning of the period 6,101 6,884 6,295 7,292
Charge-offs 0 0 0 0
Recoveries 0 0 0 0
Net charge-offs (recoveries) 0 0 0 0
Provision (recovery of provision) (48) (362) (242) (770)
Balance at the end of the period 6,053 6,522 6,053 6,522
Aircraft        
Changes in allowance for loan and lease losses        
Balance at the beginning of the period 36,797 36,832 35,843 36,663
Charge-offs 0 485 0 485
Recoveries 0 206 0 415
Net charge-offs (recoveries) 0 279 0 70
Provision (recovery of provision) (1,679) 153 (725) 113
Balance at the end of the period 35,118 36,706 35,118 36,706
Construction equipment        
Changes in allowance for loan and lease losses        
Balance at the beginning of the period 28,736 28,721 27,529 28,258
Charge-offs 225 335 1,124 1,017
Recoveries 4 16 4 297
Net charge-offs (recoveries) 221 319 1,120 720
Provision (recovery of provision) 1,433 673 3,539 1,537
Balance at the end of the period 29,948 29,075 29,948 29,075
Commercial real estate        
Changes in allowance for loan and lease losses        
Balance at the beginning of the period 26,734 24,973 25,396 24,821
Charge-offs 354 1 354 6
Recoveries 29 18 77 21
Net charge-offs (recoveries) 325 (17) 277 (15)
Provision (recovery of provision) 285 12 1,575 166
Balance at the end of the period 26,694 25,002 26,694 25,002
Residential real estate and home equity        
Changes in allowance for loan and lease losses        
Balance at the beginning of the period 9,419 8,438 9,076 7,976
Charge-offs 116 29 126 35
Recoveries 7 2 71 18
Net charge-offs (recoveries) 109 27 55 17
Provision (recovery of provision) 454 355 743 807
Balance at the end of the period 9,764 8,766 9,764 8,766
Consumer        
Changes in allowance for loan and lease losses        
Balance at the beginning of the period 2,204 2,188 2,238 2,215
Charge-offs 287 276 641 752
Recoveries 88 70 162 131
Net charge-offs (recoveries) 199 206 479 621
Provision (recovery of provision) 128 183 374 571
Balance at the end of the period $ 2,133 $ 2,165 $ 2,133 $ 2,165