ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) [Abstract]
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax, Portion Attributable to Parent	$ (74,459)	$ (45,707)
Other Comprehensive Income (Loss), Reclassification, Pension and Other Postretirement Benefit Plans, Net Gain (Loss) Recognized in Net Periodic Benefit Cost, Tax	0	52
Currency Translation Adjustments beginning of year	(86,571)	(40,864)
Accumulated Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax	0	0
Accumulated Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net of Tax	(26,059)	(20,930)
Accumulated Other Comprehensive Income (Loss), Net of Tax	(112,630)	(61,794)
Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax	0	0	$ (3)
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net Prior Service Costs (Credit) Arising During Period, Net of Tax	137	85
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net Unamortized (Gain) Loss Arising During Period, Net of Tax	(799)	(5,214)
Currency Translation Adjustments end of year	(161,030)	(86,571)	(40,864)
Other Comprehensive Income (Loss), Available-for-sale Securities, Tax	0	0	$ 0
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net Unamortized Gain (Loss) Arising During Period, Tax	$ (439)	$ 3,087