EMPLOYEE BENEFIT PLANS - Postretirement (Details) - Postretirement benefit plans - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Postretirement benefit plan disclosure
Assumed ultimate health care cost trend rate (as a percent)	3.00%
Accumulated benefit obligation after plan amendment	$ 10,317	$ 9,961
Accumulated other comprehensive loss	3,418
Changes in the accumulated postretirement benefit obligation
Benefit obligation, beginning of the period	9,961	13,235
Service cost	142	241	$ 270
Interest cost	477	336	291
Actuarial (gain)/loss	276	(3,323)
Benefits paid	(539)	(528)
Benefit obligation, end of the period	10,317	9,961	13,235
Net periodic postretirement benefit cost
Service cost-benefits attributed to service during the period	142	241	270
Interest cost on the accumulated postretirement benefit obligation	477	336	291
Net amortization	(758)	(826)	(1,405)
Net periodic postretirement benefit cost (income)	$ (139)	$ (249)	$ (844)