ACCUMULATED OTHER COMPREHENSIVE LOSS - Related Tax Effects Allocated to Each Component of Other Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Accumulated Other Comprehensive Loss [Line Items]
Gross Amount	$ 3,301	$ 488	$ (6,175)	$ 2,576
Tax (provision) benefit attributable to other comprehensive income (loss)	319	329	134	260
Other comprehensive income (loss), net of tax	$ 3,620	$ 817	(6,041)	2,836
Foreign currency translation adjustments
Accumulated Other Comprehensive Loss [Line Items]
Gross Amount			(6,158)	2,481
Tax (provision) benefit attributable to other comprehensive income (loss)			129	333
Other comprehensive income (loss), net of tax			(6,029)	2,814
Foreign Currency Hedge
Accumulated Other Comprehensive Loss [Line Items]
Gross Amount			(17)	95
Tax (provision) benefit attributable to other comprehensive income (loss)			5	(73)
Other comprehensive income (loss), net of tax			$ (12)	$ 22