ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) - Details about Accumulated Other Comprehensive Income (Loss) Components (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Tax effect	$ (2,275)	$ (1,513)	$ (1,580)	$ (4,825)
Net income	7,792	5,720	7,363	17,757
Reclassification out of Accumulated Other Comprehensive Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net income	6	5	13,255	15
Reclassification out of Accumulated Other Comprehensive Income | Actuarial losses
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Pension and other employee benefits	8	7	24	20
Reclassification out of Accumulated Other Comprehensive Income | Defined Benefit and Other Benefit Plans
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Tax effect	(2)	(2)	(6)	(5)
Net income	$ 6	$ 5	18	15
Reclassification out of Accumulated Other Comprehensive Income | Unrealized Gains and Losses on Securities Available for Sale
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net realized losses on securities available for sale			17,498	0
Tax effect			(4,261)	0
Net income			$ 13,237	$ 0