v3.26.3
Allowance for Credit Losses (Details)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2026
USD ($)
item
Sep. 30, 2025
USD ($)
Sep. 30, 2026
USD ($)
item
Sep. 30, 2025
USD ($)
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 $ 166,354 $ 163,484 $ 161,846 $ 155,540
Charge-offs 1,170 2,480 7,934 7,469
Recoveries 841 605 3,125 3,542
Net charge-offs (recoveries) 329 1,875 4,809 3,927
Provision (recovery of provision) 1,135 (179) 10,123 9,817
Balance at the end of the period 167,160 161,430 167,160 161,430
Commercial and agricultural        
Changes in allowance for loan and lease losses        
Balance at the beginning of the period 23,885 24,339 21,983 21,316
Charge-offs 766 1,269 1,518 2,123
Recoveries 105 92 1,102 893
Net charge-offs (recoveries) 661 1,177 416 1,230
Provision (recovery of provision) (682) (1,730) 975 1,346
Balance at the end of the period 22,542 21,432 22,542 21,432
Renewable energy        
Changes in allowance for loan and lease losses        
Balance at the beginning of the period 13,451 10,044 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) 1,013 583 2,631 2,065
Balance at the end of the period 14,464 10,627 14,464 10,627
Auto and light truck        
Changes in allowance for loan and lease losses        
Balance at the beginning of the period 19,308 20,865 21,653 18,437
Charge-offs 0 526 3,767 2,366
Recoveries 523 253 1,496 1,507
Net charge-offs (recoveries) (523) 273 2,271 859
Provision (recovery of provision) (2,144) 404 (1,695) 3,418
Balance at the end of the period 17,687 20,996 17,687 20,996
Medium and heavy duty truck        
Changes in allowance for loan and lease losses        
Balance at the beginning of the period 6,053 6,522 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) 584 180 342 (590)
Balance at the end of the period 6,637 6,702 6,637 6,702
Aircraft        
Changes in allowance for loan and lease losses        
Balance at the beginning of the period 35,118 36,706 35,843 36,663
Charge-offs 0 0 0 485
Recoveries 0 150 0 565
Net charge-offs (recoveries) 0 (150) 0 (80)
Provision (recovery of provision) 1,164 (619) 439 (506)
Balance at the end of the period 36,282 36,237 36,282 36,237
Construction equipment        
Changes in allowance for loan and lease losses        
Balance at the beginning of the period 29,948 29,075 27,529 28,258
Charge-offs 68 390 1,192 1,407
Recoveries 112 10 116 307
Net charge-offs (recoveries) (44) 380 1,076 1,100
Provision (recovery of provision) (800) 681 2,739 2,218
Balance at the end of the period 29,192 29,376 29,192 29,376
Commercial real estate        
Changes in allowance for loan and lease losses        
Balance at the beginning of the period 26,694 25,002 25,396 24,821
Charge-offs 0 4 354 10
Recoveries 29 38 106 59
Net charge-offs (recoveries) (29) (34) 248 (49)
Provision (recovery of provision) 1,816 (174) 3,391 (8)
Balance at the end of the period 28,539 24,862 28,539 24,862
Residential real estate and home equity        
Changes in allowance for loan and lease losses        
Balance at the beginning of the period 9,764 8,766 9,076 7,976
Charge-offs 0 14 126 49
Recoveries 3 1 74 19
Net charge-offs (recoveries) (3) 13 52 30
Provision (recovery of provision) (32) 175 711 982
Balance at the end of the period 9,735 8,928 9,735 8,928
Consumer        
Changes in allowance for loan and lease losses        
Balance at the beginning of the period 2,133 2,165 2,238 2,215
Charge-offs 336 277 977 1,029
Recoveries 69 61 231 192
Net charge-offs (recoveries) 267 216 746 837
Provision (recovery of provision) 216 321 590 892
Balance at the end of the period $ 2,082 $ 2,270 $ 2,082 $ 2,270