ACCUMULATED OTHER COMPREHENSIVE LOSS (Changes in Accumulated Other Comprehensive Loss by Component) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Components of Other Accumulated Income, Net of Tax [Roll Forward]
Balance at beginning of period			$ 1,096,282
Other comprehensive income (loss) before reclassifications			43,110
Tax effects			(238)
Other comprehensive income	$ (1,311)	$ (53,541)	43,348	$ (118,713)
Balance at end of period	1,100,945		1,100,945
Foreign Currency Translation
Components of Other Accumulated Income, Net of Tax [Roll Forward]
Balance at beginning of period			(252,939)
Other comprehensive income (loss) before reclassifications			43,706
Tax effects			0
Other comprehensive income			43,706
Balance at end of period	(209,233)		(209,233)
Unrealized Gains on Available-For-Sale Securities
Components of Other Accumulated Income, Net of Tax [Roll Forward]
Balance at beginning of period			0
Other comprehensive income (loss) before reclassifications			(596)
Tax effects			(238)
Other comprehensive income			(358)
Balance at end of period	(358)		(358)
Unfunded Pension Liability
Components of Other Accumulated Income, Net of Tax [Roll Forward]
Balance at beginning of period			(1,953)
Other comprehensive income (loss) before reclassifications			0
Tax effects			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			43,348
Balance at end of period	$ (211,544)		$ (211,544)