EMPLOYEE BENEFIT PLANS - Other Changes Recognized in Comprehensive Income (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Compensation and Retirement Disclosure [Abstract]
Net periodic cost	$ 46	$ 43
Current year actuarial (gain) loss	6	(4)
Amortization of transition obligation	(4)	(4)
Total recognized in other comprehensive income (loss)	2	(8)
Total recognized in comprehensive income	$ 48	$ 35