PENSION PLANS - Pension expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
COMPONENTS OF NET PERIODIC COST:
Interest cost	$ 444	$ 642	$ 694
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) Excluding Service Cost, Statement of Income or Comprehensive Income [Extensible Enumeration]	Pension and Other Postretirement Benefits Cost (Reversal of Cost)	Pension and Other Postretirement Benefits Cost (Reversal of Cost)	Pension and Other Postretirement Benefits Cost (Reversal of Cost)
Gain on assets	$ (513)	$ (753)	$ (953)
Amortization of loss	179	518
Net periodic cost (benefit)	$ 110	$ 407	$ (259)
WEIGHTED-AVERAGE ASSUMPTION USED:
Discount rate	5.00%	5.00%	5.00%
Rate of compensation increase	0.00%	0.00%	0.00%