ACCUMULATED OTHER COMPREHENSIVE INCOME (Reclassified AOCI) (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other operating (loss) income, net	$ 35	$ 1,369
Comprehensive income attributable to noncontrolling interest	(4,551)	(4,483)
Income tax expense	(4,349)	(6,936)
Net gain from accumulated other comprehensive income	(124)		$ (199)
Cash flow hedges
Accumulated Other Comprehensive Income (Loss) [Line Items]
Net gain from accumulated other comprehensive income	(236)	(795)
Cash flow hedges | Reclassification out of Accumulated Other Comprehensive Income
Accumulated Other Comprehensive Income (Loss) [Line Items]
Comprehensive income attributable to noncontrolling interest	98	330
Income tax expense	92	308
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	(412)	(1,297)
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	$ (14)	$ (136)