OTHER NON-CURRENT LIABILITIES (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Gain Contingencies [Line Items]
Business Combination, Contingent Consideration Arrangement - Equator	$ (7,591)	$ (37,924)	$ 0
Acquisition related contingent consideration	3,932	11,616
Other non-current liabilities	14,221	9,032
Total	18,153	$ 20,648
Equator LLC
Gain Contingencies [Line Items]
Value of Equator contingent consideration after payment to sellers	$ 0