GEOGRAPHIC AND SEGMENT INFORMATION - GEOGRAPHIC (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Segment Reporting Information [Line Items]
Sales	$ 4,296	$ 6,649	$ 9,293	$ 12,278
Domestic
Segment Reporting Information [Line Items]
Sales	3,393	4,540	7,011	8,450
International
Segment Reporting Information [Line Items]
Sales	$ 903	$ 2,109	$ 2,282	$ 3,828