ACCUMULATED OTHER COMPREHENSIVE LOSS - Related Tax Effects Allocated to Each Component of Other Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Accumulated Other Comprehensive Income (Loss) [Line Items]
Gross Amount	$ 5,673	$ (6,142)
Tax Effect	(1,151)	986
Net Amount	4,522	(5,156)
Foreign currency translation adjustments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Gross Amount	6,226	(7,749)
Tax Effect	(1,363)	1,611
Net Amount	4,863	(6,138)
Foreign currency hedge
Accumulated Other Comprehensive Income (Loss) [Line Items]
Gross Amount	(553)	1,607
Tax Effect	212	(625)
Net Amount	$ (341)	$ 982