EARNINGS PER SHARE (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Numerator:
Net loss	$ (4,690)	$ (4,295)	$ (6,641)	$ (9,903)
Denominator:
Weighted average shares outstanding - basic and diluted (in shares)	34,186	33,384	34,181	33,363
Earnings (loss) per share:
Basic and diluted (in dollars per share)	$ (0.14)	$ (0.13)	$ (0.19)	$ (0.30)
Options
Anti-dilutive instruments excluded from diluted loss per common share:
Options (in shares)	4,986	1,882	4,986	1,882