Quarterly report pursuant to Section 13 or 15(d)

STOCK-BASED COMPENSATION (Stock Option Award Activity) (Details)

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STOCK-BASED COMPENSATION (Stock Option Award Activity) (Details) - Common stock options - $ / shares
 3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Dec. 31, 2019
Number of Options outstanding          
Outstanding at the beginning of the year (in shares)     1,340,252    
Granted (in shares) 35,000 25,000 95,500 127,000  
Exercised (in shares)     (1,875)    
Forfeited (in shares)     (281,325)    
Outstanding at the end of the reporting period (in shares) 1,152,552   1,152,552   1,340,252
Number of Options Exercisable          
Exercisable at the beginning of the year (in shares)     989,092    
Vested (in shares)     (99,346)    
Forfeited (in shares)     (132,368)    
Exercisable at the end of the reporting period (in shares) 954,195   954,195   989,092
Weighted Average Exercise Price Outstanding          
Outstanding at the beginning of period (in dollars per share)     $ 4.57    
Granted (in dollars per share)     2.32    
Exercised (in dollars per share)     1.80    
Forfeited (in dollars per share)     4.17    
Outstanding at the end of the reporting period (in dollars per share) $ 4.48   4.48   $ 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)     3.75    
Forfeited (in dollars per share)     4.69    
Exercisable at the end of the reporting period (in dollars per share) 4.77   4.77   4.85
Weighted Average Grant Date Fair Value Outstanding          
Outstanding at the beginning of the reporting period (in dollars per share)     2.88    
Granted (in dollars per share)     1.68    
Exercised (in dollars per share)     1.23    
Forfeited (in dollars per share)     2.71    
Outstanding at the end of the reporting period (in dollars per share) 2.83   2.83   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)     2.39    
Forfeited options exercisable (in dollars per share)     3.00    
Exercisable at the end of the reporting period (in dollars per share) $ 2.97   $ 2.97   $ 3.03
Weighted Average Remaining Life In Years Outstanding          
Outstanding Weighted Average Remaining Life (in years)     5 years 9 months 14 days   6 years 11 months 12 days
Granted (in years)     8 years 9 months    
Weighted Average Remaining Life Exercisable          
Weighted Average Remaining Life In Years     5 years 2 months 1 day   6 years 4 months 13 days
Granted (in years)     5 years 2 months 1 day