LOSS PER COMMON SHARE (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
LOSS PER COMMON SHARE
Net loss	$ (32,609)	$ (19,711)	$ (26,558)
Weighted average common shares outstanding - basic	156,208	138,813	125,883
Weighted average common shares outstanding - diluted	156,208	138,813	125,883
Net loss per common share - basic	$ (0.21)	$ (0.14)	$ (0.21)
Net loss per common share - diluted	$ (0.21)	$ (0.14)	$ (0.21)