DERIVATIVES (Details) - Foreign currency contracts - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Derivative [Line Items]
Unrealized gain (loss), net of less than $0.1 million and $0.1 million income tax, respectively, included in "Accumulated items of other comprehensive loss" in the accompanying consolidated balance sheets	$ 638	$ (355)
Realized loss on effective portion, included as compensation expense in "Direct costs of customer support" and "Sales, general and administrative" in the accompanying consolidated statements of operations and comprehensive loss	$ (179)	$ (107)