ACCUMULATED OTHER COMPREHENSIVE LOSS - Related Tax Effects Allocated to Each Component of Other Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Accumulated Other Comprehensive Income (Loss) [Line Items]
Gross Amount			$ 1,525	$ (11,033)
Tax Effect	$ 287	$ 1,811	(1,031)	2,365
Net Amount			494	(8,668)
Foreign currency translation adjustments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Gross Amount			1,872	(12,155)
Tax Effect			(1,147)	2,777
Net Amount			725	(9,378)
Foreign currency hedge
Accumulated Other Comprehensive Income (Loss) [Line Items]
Gross Amount			(347)	1,122
Tax Effect			116	(412)
Net Amount			$ (231)	$ 710