EMPLOYEE BENEFIT PLANS - Components of Net Periodic Benefit Cost (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]
Service cost with interest to end of year	$ 78	$ 67	$ 66
Interest cost	44	46	48
Amortization of prior service credit/(cost)	74	74	57
Amortization of (gain)/loss	(8)	(15)	(10)
Total net periodic benefit cost	$ 188	$ 172	$ 161