ACCUMULATED OTHER COMPREHENSIVE LOSS (Changes in Accumulated Other Comprehensive Loss by Component) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Components of Other Accumulated Income, Net of Tax [Roll Forward]
Balance at beginning of period			$ 1,096,282
Other comprehensive income	$ (1,178)	$ 12,231	44,659	$ (65,172)
Balance at end of period	1,116,343		1,116,343
Foreign Currency Translation
Components of Other Accumulated Income, Net of Tax [Roll Forward]
Balance at beginning of period			(252,939)
Other comprehensive income before reclassifications			44,659
Other comprehensive income			44,659
Balance at end of period	(208,280)		(208,280)
Unfunded Pension Liability
Components of Other Accumulated Income, Net of Tax [Roll Forward]
Balance at beginning of period			(1,953)
Other comprehensive income before reclassifications			0
Other comprehensive income			0
Balance at end of period	(1,953)		(1,953)
Total
Components of Other Accumulated Income, Net of Tax [Roll Forward]
Balance at beginning of period			(254,892)
Other comprehensive income before reclassifications			44,659
Other comprehensive income			44,659
Balance at end of period	$ (210,233)		$ (210,233)