EARNINGS (LOSS) PER SHARE (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
EARNINGS (LOSS) PER SHARE
Net (loss)/income	$ (4,447)	$ 434	$ (18,467)	$ (18,913)
Net income allocated to restricted stock, Basic		(12)
Net income allocated to restricted stock, Diluted		(13)
Net (loss)/income allocated to common shares, Basic	(4,447)	422	(18,467)	(18,913)
Net (loss)/income allocated to common shares, Diluted	$ (4,447)	$ 421	$ (18,467)	$ (18,913)
Basic Weighted-Average Shares Outstanding	12,107	11,991	12,066	11,953
Dilutive effect of stock options and ESPP		12
Diluted Weighted-Average Shares Outstanding	12,107	12,003	12,066	11,953
(Loss)/Income per share, Basic	$ (0.37)	$ 0.04	$ (1.53)	$ (1.58)
(Loss)/Income per share, Diluted	$ (0.37)	$ 0.04	$ (1.53)	$ (1.58)