REVENUE - Net Sales by Product and Service (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Disaggregation of Revenue [Line Items]
Net sales	$ 14,948	$ 19,328
Less: sales returns	(147)	(695)
Product sales
Disaggregation of Revenue [Line Items]
Net sales	14,011	18,523
Freight and other
Disaggregation of Revenue [Line Items]
Net sales	$ 1,084	$ 1,500