RESTRUCTURING CHARGES (Restructuring Reserve) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Restructuring Reserve [Roll Forward]
Balance at December 31, 2016			$ 0
Restructuring	$ 789	$ 182	2,767	$ 608
Cash expenditures			(882)
Other adjustments to accrual			0
Foreign currency translation adjustment			131
Balance at September 30, 2017	2,016		2,016
Employee termination costs
Restructuring Reserve [Roll Forward]
Restructuring	615		1,008
Inventory Impairment
Restructuring Reserve [Roll Forward]
Restructuring	0		1,401
Facility related costs
Restructuring Reserve [Roll Forward]
Restructuring	43		158
Other related costs
Restructuring Reserve [Roll Forward]
Restructuring	$ 131		$ 200