v3.25.4
ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) - Summary of Accumulated Comprehensive Loss (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]      
Beginning balance $ 707,654 $ 585,364 $ 508,955
Current Period Change 36,559 38,161 31,713
Income Tax Effect (10,010) (10,794) (9,010)
Ending balance 794,464 707,654 585,364
Accumulated Other Comprehensive Income (Loss)      
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]      
Beginning balance (58,637) (86,004) (108,707)
Current Period Change 36,559 38,161 31,713
Income Tax Effect (10,010) (10,794) (9,010)
Ending balance (32,088) (58,637) (86,004)
Unrealized loss on benefits plans      
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]      
Beginning balance (1,364) (1,481) (1,652)
Current Period Change 56 172 243
Income Tax Effect (16) (55) (72)
Ending balance (1,324) (1,364) (1,481)
Unrealized loss on available for sale securities      
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]      
Beginning balance (49,136) (74,348) (95,539)
Current Period Change 34,673 35,113 29,575
Income Tax Effect (9,464) (9,901) (8,384)
Ending balance (23,927) (49,136) (74,348)
Unaccreted unrealized loss on securities transferred to held-to-maturity      
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]      
Beginning balance (8,608) (10,175) (11,516)
Current Period Change 2,099 2,232 1,895
Income Tax Effect (603) (665) (554)
Ending balance (7,112) (8,608) (10,175)
Unrealized gain on cash flow hedges      
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]      
Beginning balance 471 0 0
Current Period Change (269) 644 0
Income Tax Effect 73 (173) 0
Ending balance $ 275 $ 471 $ 0