OPERATING SEGMENTS AND GEOGRAPHIC INFORMATION - Impact of Marketing Expense Allocations (Details) - Marketing Expense - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Segment Reporting Information [Line Items]
Other Operating Income (Expense), Net	$ (21,043)	$ (29,285)
Operating Segments | Americas
Segment Reporting Information [Line Items]
Other Operating Income (Expense), Net	(9,133)	(13,546)
Operating Segments | Asia Pacific
Segment Reporting Information [Line Items]
Other Operating Income (Expense), Net	(10,100)	(13,424)
Operating Segments | EMEA
Segment Reporting Information [Line Items]
Other Operating Income (Expense), Net	(1,810)	(2,315)
Unallocated corporate and other
Segment Reporting Information [Line Items]
Other Operating Income (Expense), Net	$ 21,043	$ 29,285