ACCUMULATED OTHER COMPREHENSIVE INCOME (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2018 USD ($)
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	$ 103,074
Ending balance	105,090
Total Accumulated Other Comprehensive Income
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	232
Current period other comprehensive income	81
Ending balance	313
Minimum Pension Liability
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	(489)
Current period other comprehensive income	0
Ending balance	(489)
Foreign Currency Translation
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	721
Current period other comprehensive income	81
Ending balance	$ 802