SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (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]
Accrued restructuring charge, beginning of year			$ 694
Restructuring charge	$ 4,896	$ 3,585	11,484	$ 3,585
Cash paid			(4,880)
Non-cash items			(3,939)
Accrued restructuring charge, end of period	$ 3,359		$ 3,359