v3.26.1
ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) - Schedule of Accumulated Comprehensive Loss (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]        
Beginning balance $ 807,574 $ 735,996 $ 794,464 $ 707,654
Current Period Change (5,745) 5,915 (11,883) 21,406
Income Tax Effect 1,535 (1,589) 3,175 (5,751)
Ending balance 834,993 753,984 834,993 753,984
Total Accumulated Other Comprehensive Loss        
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]        
Beginning balance (36,586) (47,308) (32,088) (58,637)
Current Period Change     (11,883) 21,406
Income Tax Effect     3,175 (5,751)
Ending balance (40,796) (42,982) (40,796) (42,982)
Unrealized loss on benefits plans        
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]        
Beginning balance     (1,324) (1,364)
Current Period Change 43 40 86 82
Income Tax Effect (12) (11) (25) (22)
Ending balance (1,263) (1,304) (1,263) (1,304)
Unrealized loss on available for sale securities        
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]        
Beginning balance     (23,927) (49,136)
Current Period Change     (10,568) 20,384
Income Tax Effect     2,824 (5,476)
Ending balance (31,671) (34,228) (31,671) (34,228)
Unaccreted unrealized loss on securities transferred to held-to-maturity        
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]        
Beginning balance     (7,112) (8,608)
Current Period Change     892 984
Income Tax Effect     (239) (264)
Ending balance (6,459) (7,888) (6,459) (7,888)
Unrealized gains (losses) on derivatives        
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]        
Beginning balance     275 471
Current Period Change (1,529) (141) (2,293) (44)
Income Tax Effect 410 37 615 11
Ending balance $ (1,403) $ 438 $ (1,403) $ 438