v3.26.3
Loans Receivable - Changes in the Allowance for Losses on Loans Receivable (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Dec. 31, 2025
Changes in allowance for losses on allocated loans receivable          
Beginning balance $ 149,321 $ 129,159 $ 150,212 $ 116,819 $ 116,819
Current period provision 5,220 31,394 14,454 51,106  
Charge-offs (7,618) (11,174) (21,653) (24,434)  
Recoveries 2,703 1,988 6,613 7,876  
Initial ACL on loans purchased with credit deterioration   6,029   6,029  
Ending balance 149,626 157,396 149,626 157,396 150,212
Penns Woods          
Changes in allowance for losses on allocated loans receivable          
Current period provision   20,600   20,600  
Charge-offs   (18,100)   (18,100)  
Off-Balance Sheet Exposure          
Changes in allowance for losses on allocated loans receivable          
Beginning balance 14,456 10,892 12,684 13,949 13,949
Current period provision 3,896 (189) 5,668 (3,246)  
Charge-offs 0 0 0 0  
Recoveries 0 0 0 0  
Initial ACL on loans purchased with credit deterioration   0   0  
Ending balance 18,352 10,703 18,352 10,703 12,684
Personal Banking          
Changes in allowance for losses on allocated loans receivable          
Beginning balance 45,423 39,805 47,457 43,464 43,464
Current period provision 3,479 9,222 9,638 11,724  
Charge-offs (4,359) (4,467) (15,151) (13,150)  
Recoveries 1,407 1,460 4,006 3,982  
Initial ACL on loans purchased with credit deterioration   2,148   2,148  
Ending balance 45,950 48,168 45,950 48,168 47,457
Personal Banking | Off-Balance Sheet Exposure          
Changes in allowance for losses on allocated loans receivable          
Beginning balance 81 65 91 62 62
Current period provision 0 37 (10) 40  
Charge-offs 0 0 0 0  
Recoveries 0 0 0 0  
Initial ACL on loans purchased with credit deterioration   0   0  
Ending balance 81 102 81 102 91
Personal Banking | Residential mortgage loans          
Changes in allowance for losses on allocated loans receivable          
Beginning balance 10,174 12,089 10,546 14,347 14,347
Current period provision 521 (909) 1,307 (2,581)  
Charge-offs (617) (137) (2,083) (998) (1,226)
Recoveries 231 278 539 553  
Initial ACL on loans purchased with credit deterioration   271   271  
Ending balance 10,309 11,592 10,309 11,592 10,546
Personal Banking | Residential mortgage loans | Off-Balance Sheet Exposure          
Changes in allowance for losses on allocated loans receivable          
Beginning balance 1   0    
Current period provision 0   1    
Charge-offs 0      
Recoveries 0      
Ending balance 1   1   0
Personal Banking | Home equity loans          
Changes in allowance for losses on allocated loans receivable          
Beginning balance 6,211 4,216 6,149 4,845 4,845
Current period provision 378 2,189 747 1,811  
Charge-offs (199) (336) (873) (1,022) (1,580)
Recoveries 98 315 465 750  
Initial ACL on loans purchased with credit deterioration   991   991  
Ending balance 6,488 7,375 6,488 7,375 6,149
Personal Banking | Home equity loans | Off-Balance Sheet Exposure          
Changes in allowance for losses on allocated loans receivable          
Beginning balance 80 65 91 62 62
Current period provision 0 37 (11) 40  
Charge-offs 0 0  
Recoveries 0 0  
Initial ACL on loans purchased with credit deterioration   0   0  
Ending balance 80 102 80 102 91
Personal Banking | Vehicle loans          
Changes in allowance for losses on allocated loans receivable          
Beginning balance 24,744 21,234 25,945 22,389 22,389
Current period provision 1,743 6,021 4,779 8,284  
Charge-offs (2,108) (2,115) (7,464) (6,566) (8,828)
Recoveries 630 473 1,749 1,506  
Initial ACL on loans purchased with credit deterioration   885   885  
Ending balance 25,009 26,498 25,009 26,498 25,945
Personal Banking | Consumer loans          
Changes in allowance for losses on allocated loans receivable          
Beginning balance 4,294 2,266 4,817 1,883 1,883
Current period provision 837 1,921 2,805 4,210  
Charge-offs (1,435) (1,879) (4,731) (4,564) (6,441)
Recoveries 448 394 1,253 1,173  
Initial ACL on loans purchased with credit deterioration   1   1  
Ending balance 4,144 2,703 4,144 2,703 4,817
Commercial Banking          
Changes in allowance for losses on allocated loans receivable          
Beginning balance 103,898 89,354 102,755 73,355 73,355
Current period provision 1,741 22,172 4,816 39,382  
Charge-offs (3,259) (6,707) (6,502) (11,284)  
Recoveries 1,296 528 2,607 3,894  
Initial ACL on loans purchased with credit deterioration   3,881   3,881  
Ending balance 103,676 109,228 103,676 109,228 102,755
Commercial Banking | Off-Balance Sheet Exposure          
Changes in allowance for losses on allocated loans receivable          
Beginning balance 14,375 10,827 12,593 13,887 13,887
Current period provision 3,896 (226) 5,678 (3,286)  
Charge-offs 0 0 0 0  
Recoveries 0 0 0 0  
Initial ACL on loans purchased with credit deterioration   0   0  
Ending balance 18,271 10,601 18,271 10,601 12,593
Commercial Banking | Commercial real estate loans          
Changes in allowance for losses on allocated loans receivable          
Beginning balance 54,091 53,624 58,234 44,328 44,328
Current period provision (5,991) 16,036 (9,789) 23,317  
Charge-offs (1,393) (3,976) (2,536) (4,385) (14,150)
Recoveries 933 343 1,731 2,767  
Initial ACL on loans purchased with credit deterioration   3,488   3,488  
Ending balance 47,640 69,515 47,640 69,515 58,234
Commercial Banking | Commercial real estate loans | Off-Balance Sheet Exposure          
Changes in allowance for losses on allocated loans receivable          
Beginning balance 2,192 1,897 1,926 4,154 4,154
Current period provision 1,143 391 1,409 (1,866)  
Charge-offs 0 0 0  
Recoveries 0 0 0  
Initial ACL on loans purchased with credit deterioration   0   0  
Ending balance 3,335 2,288 3,335 2,288 1,926
Commercial Banking | Commercial real estate loans - owner occupied          
Changes in allowance for losses on allocated loans receivable          
Beginning balance 5,016 4,130 4,679 3,882 3,882
Current period provision 70 1,226 402 1,394  
Charge-offs (301) (336) (301) (336) (336)
Recoveries 5 2 10 82  
Initial ACL on loans purchased with credit deterioration   0   0  
Ending balance 4,790 5,022 4,790 5,022 4,679
Commercial Banking | Commercial real estate loans - owner occupied | Off-Balance Sheet Exposure          
Changes in allowance for losses on allocated loans receivable          
Beginning balance 468 260 165 160 160
Current period provision (104) 65 199 165  
Charge-offs 0 0 0  
Recoveries 0 0 0  
Initial ACL on loans purchased with credit deterioration   0   0  
Ending balance 364 325 364 325 165
Commercial Banking | Commercial and industrial loans          
Changes in allowance for losses on allocated loans receivable          
Beginning balance 44,791 31,600 39,842 25,145 25,145
Current period provision 7,662 4,910 14,203 14,671  
Charge-offs (1,565) (2,395) (3,665) (6,563) (7,095)
Recoveries 358 183 866 1,045  
Initial ACL on loans purchased with credit deterioration   393   393  
Ending balance 51,246 34,691 51,246 34,691 39,842
Commercial Banking | Commercial and industrial loans | Off-Balance Sheet Exposure          
Changes in allowance for losses on allocated loans receivable          
Beginning balance 11,715 8,670 10,502 9,573 9,573
Current period provision 2,857 (682) 4,070 (1,585)  
Charge-offs 0 0 0  
Recoveries 0 0 0  
Initial ACL on loans purchased with credit deterioration   0   0  
Ending balance $ 14,572 $ 7,988 $ 14,572 $ 7,988 $ 10,502