ACCUMULATED OTHER COMPREHENSIVE LOSS - Related Tax Effects Allocated to Each Component of Other Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Accumulated Other Comprehensive Loss [Line Items]
Gross Amount	$ 2,570	$ (2,398)	$ (3,605)	$ 178
Tax (provision) benefit attributable to other comprehensive income (loss)	(60)	(148)	74	112
Other comprehensive income (loss), net of tax	$ 2,510	$ (2,546)	(3,531)	290
Foreign currency translation adjustments
Accumulated Other Comprehensive Loss [Line Items]
Gross Amount			(2,978)	(473)
Tax (provision) benefit attributable to other comprehensive income (loss)			(81)	273
Other comprehensive income (loss), net of tax			(3,059)	(200)
Foreign Currency Hedge
Accumulated Other Comprehensive Loss [Line Items]
Gross Amount			(627)	651
Tax (provision) benefit attributable to other comprehensive income (loss)			155	(161)
Other comprehensive income (loss), net of tax			$ (472)	$ 490