ACCUMULATED OTHER COMPREHENSIVE INCOME (Reclassified AOCI) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other operating (loss) income, net	$ (451)	$ 1,771	$ 2,577	$ 3,744
Comprehensive income attributable to noncontrolling interest	(4,533)	(2,289)	(4,004)	(13,537)
Income tax expense	$ (8,396)	$ (3,043)	(22,443)	(16,817)
Net gain from accumulated other comprehensive income			(770)		$ (1,503)
Cash flow hedges
Accumulated Other Comprehensive Income (Loss) [Line Items]
Net gain from accumulated other comprehensive income			(566)	(2,104)
Cash flow hedges | Reclassification out of Accumulated Other Comprehensive Income
Accumulated Other Comprehensive Income (Loss) [Line Items]
Comprehensive income attributable to noncontrolling interest			235	873
Income tax expense			220	818
Cash flow hedges | Reclassification out of Accumulated Other Comprehensive Income | Foreign currency exchange contracts
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other operating (loss) income, net			(865)	(2,928)
Cash flow hedges | Reclassification out of Accumulated Other Comprehensive Income | Foreign currency option contracts
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other operating (loss) income, net			$ (156)	$ (867)