STOCK-BASED COMPENSATION (Details 1) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Stock options
Outstanding at beginning of period	379,800	424,800
Granted	70,000
Forfeited	(9,400)	(45,000)
Outstanding at end of period	440,400	379,800
Exercisable at end of period	370,400
Weighted average exercise price
Outstanding at beginning of period	$ 7.54	$ 8.30
Granted	1.68
Forfeited	8.55	14.75
Outstanding at end of period	6.58	$ 7.54
Exercisable at end of period	$ 7.51
Weighted average remaining contractual term
Outstanding at beginning of period	6 years 1 month 6 days	6 years 6 months
Outstanding at end of period	5 years 9 months 18 days	6 years 1 month 6 days
Exercisable at the end of period	5 years 2 months 12 days
Aggregate intrinsic value
Outstanding at beginning of period		$ 22
Outstanding at end of period	$ 155
Exercisable at end of period	$ 1