ACCUMULATED OTHER COMPREHENSIVE (LOSS) INCOME (Reclassified AOCI) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other operating (expense) income, net	$ (865)	$ (451)	$ (2,799)	$ 2,577
Comprehensive (loss) income attributable to noncontrolling interest	5,169	(4,533)	(197)	(4,004)
Income tax expense	$ (2,251)	$ (8,396)	(10,208)	(22,443)
Net loss (gain) from accumulated other comprehensive income			619		$ (199)
Cash flow hedges, parent
Accumulated Other Comprehensive Income (Loss) [Line Items]
Net loss (gain) from accumulated other comprehensive income			282	(566)
Cash flow hedges, parent | Reclassification out of Accumulated Other Comprehensive Income
Accumulated Other Comprehensive Income (Loss) [Line Items]
Income tax expense			(110)	220
Cash flow hedges, parent | Reclassification out of Accumulated Other Comprehensive Income | Realized loss (gain) on foreign currency exchange contracts
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other operating (expense) income, net			580	(865)
Cash flow hedges, parent | Reclassification out of Accumulated Other Comprehensive Income | Realized (gain) on foreign currency option contracts
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other operating (expense) income, net			(71)	(156)
Cash flow hedges, noncontrolling interest | Reclassification out of Accumulated Other Comprehensive Income
Accumulated Other Comprehensive Income (Loss) [Line Items]
Comprehensive (loss) income attributable to noncontrolling interest			$ (117)	$ 235