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, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Accumulated Other Comprehensive Loss [Line Items]
Gross Amount	$ 657	$ 3,301	$ 874	$ (6,175)
Tax (provision) benefit attributable to other comprehensive income (loss)	(257)	319	(155)	134
Other comprehensive income (loss), net of tax	$ 400	$ 3,620	719	(6,041)
Foreign currency translation adjustments
Accumulated Other Comprehensive Loss [Line Items]
Gross Amount			874	(6,158)
Tax (provision) benefit attributable to other comprehensive income (loss)			(155)	129
Other comprehensive income (loss), net of tax			719	(6,029)
Foreign currency hedge
Accumulated Other Comprehensive Loss [Line Items]
Gross Amount			0	(17)
Tax (provision) benefit attributable to other comprehensive income (loss)			0	5
Other comprehensive income (loss), net of tax			$ 0	$ (12)