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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% |

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