COMPREHENSIVE INCOME (LOSS) - Schedule of Changes in Accumulated Other Comprehensive Income by Component (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2016 USD ($)
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	$ 751,443
Ending balance	794,787
Loss on Cash Flow Hedges
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	0
Other comprehensive (loss) income	(345)
Ending balance	(345)
Defined Benefit Pension Items
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	9
Other comprehensive (loss) income	(4)
Ending balance	5
Foreign Currency Items
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	(47,911)
Other comprehensive (loss) income	4,675
Ending balance	(43,236)
Total
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	(47,902)
Other comprehensive (loss) income	4,326
Ending balance	$ (43,576)