EMPLOYEE BENEFIT PLANS - Components of Cost (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Components of net periodic benefit cost (credit)
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Interest Cost, Statement of Income or Comprehensive Income	Other, net	Other, net	Other, net
Pension settlement expense	$ 0	$ 0	$ 0
Defined Benefit Plan, Net Periodic Benefit (Cost) Credit, Amortization of Gain (Loss), Statement of Income or Comprehensive Income	Other, net	Other, net	Other, net
Noncash charge to pension settlement expense	$ 0	$ 0	$ 0
Supplemental Benefit Plan
Components of net periodic benefit cost (credit)
Interest cost	16	7	4
Amortization of net actuarial (gain) loss	(4)	8	9
Net periodic benefit cost (credit)	12	15	13
Postretirement Health Benefit Plan
Components of net periodic benefit cost (credit)
Service cost	78	156	192
Interest cost	599	441	427
Amortization of net actuarial (gain) loss	(1,326)	(765)	(548)
Net periodic benefit cost (credit)	$ (649)	$ (168)	$ 71