EMPLOYEE BENEFIT PLANS - Components of Net Periodic Benefit Costs (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Share-based Payment Arrangement [Abstract]
Service cost	$ 272	$ 252	$ 227
Interest cost	20	37	78
Net periodic benefit cost included in result of operations	$ 292	$ 289	$ 305