ACCUMULATED OTHER COMPREHENSIVE (LOSS) INCOME (Reclassified AOCI) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2018
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other operating (expense) income, net	$ (1,969)	$ 1,659	$ (1,934)	$ 3,029
Comprehensive (loss) income attributable to noncontrolling interest	(815)	5,011	(5,366)	528
Income tax expense	$ (3,608)	$ (7,110)	(7,958)	(14,047)
Net gain from accumulated other comprehensive income			86		$ (199)
Cash flow hedges
Accumulated Other Comprehensive Income (Loss) [Line Items]
Net gain from accumulated other comprehensive income			(138)	(1,009)
Cash flow hedges | Reclassification out of Accumulated Other Comprehensive Income
Accumulated Other Comprehensive Income (Loss) [Line Items]
Comprehensive (loss) income attributable to noncontrolling interest			58	419
Income tax expense			54	391
Cash flow hedges | Reclassification out of Accumulated Other Comprehensive Income | Realized (gain) on foreign currency exchange contracts
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other operating (expense) income, net			(190)	(1,654)
Cash flow hedges | Reclassification out of Accumulated Other Comprehensive Income | Realized loss (gain) on foreign currency option contracts
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other operating (expense) income, net			$ (60)	$ (165)