REVENUE - Narrative (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Disaggregation of Revenue [Line Items]
Actual sales returns rates	2.00%	2.00%
Decrease in deferred revenue, revenue recognized	$ 2.4
Increase in deferred revenue from cash payments received	$ 2.0
Minimum
Disaggregation of Revenue [Line Items]
Sales returns policy term	14 days
Historical sales returns rates	1.00%
Maximum
Disaggregation of Revenue [Line Items]
Sales returns policy term	1 year
Historical sales returns rates	9.00%