STOCK-BASED COMPENSATION - Stock Option Award Activity (Details) - $ / shares	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Number of Options outstanding
Outstanding at the beginning of the year (in shares)	1,340,252
Granted (in shares)	105,500
Exercised (in shares)	(5,939)
Canceled/Forfeited (in shares)	(298,838)
Outstanding at the end of the reporting period (in shares)	1,140,975	1,340,252
Number of Options Exercisable
Exercisable at the beginning of the year (in shares)	989,092
Vested (in shares)	122,030
Exercised (in shares)	(5,939)
Canceled/Forfeited (in shares)	(149,881)
Exercisable at the end of the reporting period (in shares)	955,302	989,092
Weighted Average Exercise Price Outstanding
Outstanding at the beginning of period (in dollars per share)	$ 4.57
Granted (in dollars per share)	2.33
Exercised (in dollars per share)	1.90
Forfeited (in dollars per share)	4.25
Outstanding at the end of the reporting period (in dollars per share)	4.46	$ 4.57
Weighted Average Exercise Price Exercisable
Exercisable at the beginning of the reporting period (in dollars per share)	4.85
Vested exercisable (in dollars per share)	3.74
Canceled/Forfeited (in dollars per share)	4.79
Exercisable at the end of the reporting period (in dollars per share)	4.74	4.85
Weighted Average Grant Date Fair Value Outstanding
Outstanding at the beginning of the reporting period (in dollars per share)	2.88
Options granted (in dollars per share)	1.68
Exercised (in dollars per share)	1.28
Forfeited (in dollars per share)	2.76
Outstanding at the end of the reporting period (in dollars per share)	2.81	2.88
Weighted Average Grant Date Fair Value Exercisable
Exercisable at the beginning of the reporting period (in dollars per share)	3.03
Vested options exercisable (in dollars per share)	2.4
Forfeited options exercisable (in dollars per share)	3.06
Exercisable at the end of the reporting period (in dollars per share)	$ 2.96	$ 3.03
Common Stock Options
Weighted Average Remaining Life In Years Outstanding
Outstanding at the end of the reporting period (in years)	5 years 8 months 8 days	6 years 11 months 12 days
Granted, Weighted average remaining life (in years)	8 years 7 months 20 days
Weighted Average Remaining Life Exercisable
Exercisable at the end of the reporting period (in years)	5 years 1 month 6 days	6 years 4 months 13 days
Vested, Weighted average remaining live (in years)	5 years 6 months 10 days