ACCUMULATED OTHER COMPREHENSIVE LOSS (Components of AOCI) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Increase (Decrease) in Equity
Beginning Balance	$ (110,842)	$ (19,556)	$ 49,632
Other comprehensive (loss) income before reclassifications	(144,057)	(88,471)	(68,857)
Amounts reclassified out of accumulated other comprehensive loss	0	(3,388)	0
Tax effects	7	573	(331)
Other comprehensive (loss) income	(144,050)	(91,286)	(69,188)
Ending Balance	(254,892)	(110,842)	(19,556)
Foreign Currency Translation Adjustments
Increase (Decrease) in Equity
Beginning Balance	(108,889)	(20,164)	50,627
Other comprehensive (loss) income before reclassifications	(144,050)	(88,725)	(70,791)
Amounts reclassified out of accumulated other comprehensive loss	0	0	0
Tax effects	0	0	0
Other comprehensive (loss) income	(144,050)	(88,725)	(70,791)
Ending Balance	(252,939)	(108,889)	(20,164)
Unrealized Gains (Losses) on Available-for-Sale Securities
Increase (Decrease) in Equity
Beginning Balance	0	1,904	660
Other comprehensive (loss) income before reclassifications	0	1,159	1,452
Amounts reclassified out of accumulated other comprehensive loss	0	(3,388)	0
Tax effects	0	325	(208)
Other comprehensive (loss) income	0	(1,904)	1,244
Ending Balance	0	0	1,904
Unfunded Pension Liability
Increase (Decrease) in Equity
Beginning Balance	(1,953)	(1,296)	(1,655)
Other comprehensive (loss) income before reclassifications	(7)	(905)	482
Amounts reclassified out of accumulated other comprehensive loss	0	0	0
Tax effects	7	248	(123)
Other comprehensive (loss) income	0	(657)	359
Ending Balance	$ (1,953)	$ (1,953)	$ (1,296)