ACCUMULATED OTHER COMPREHENSIVE INCOME AOCI (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2018 USD ($)
Accumulated Other Comprehensive Income [Roll Forward]
Total - Beginning balance	$ 1,384
Foreign currency translation	137
Reclassification to operations	(88)
Unrealized gains	(812)
Total - Ending balance	621
Foreign Currency Translation Adjustment
Accumulated Other Comprehensive Income [Roll Forward]
Total - Beginning balance	1,971
Foreign currency translation	137
Reclassification to operations	0
Total - Ending balance	2,108
Derivatives Accounted for as Cash Flow Hedges
Accumulated Other Comprehensive Income [Roll Forward]
Total - Beginning balance	(1,441)
Reclassification to operations	(88)
Unrealized gains	(812)
Total - Ending balance	(2,341)
Defined Benefit Plan
Accumulated Other Comprehensive Income [Roll Forward]
Total - Beginning balance	854
Total - Ending balance	$ 854