RESTRUCTURING CHARGES (Summary of Restructuring Costs) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Jun. 30, 2016
Restructuring and Related Activities [Abstract]
Restructuring costs paid	$ (160)	$ (156)	$ (1,721)
Restructuring costs accrual balance	$ 338	$ 498	$ 654	$ 2,375