EMPLOYEE BENEFIT PLANS - Components of Net Period Benefit Cost (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Retirement Benefits [Abstract]
Service cost	$ 56	$ 61
Interest cost	1	1
Amortization of transition obligation	4	4
Defined Benefit Plan, Amortization of Gain (Loss)	(4)	(3)
Prior service cost	(43)	(42)
Total pension expense	$ 14	$ 21