Annual report pursuant to Section 13 and 15(d)

STOCK-BASED COMPENSATION (Estimated Fair Value of Stock Options) (Details)

v3.20.1
STOCK-BASED COMPENSATION (Estimated Fair Value of Stock Options) (Details) - Non-Vested Restricted Stock Unit Awards - $ / shares
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Share price (in dollars per share) $ 1.33  
Dividend Yield 0.00% 0.00%
Expected Volatility 70.00% 70.00%
Expected Life 7 years 7 years
Minimum    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Share price (in dollars per share) $ 1.52 $ 1.80
Risk-free interest rate 1.47% 2.50%
Maximum    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Share price (in dollars per share) $ 3.26 $ 5.96
Risk-free interest rate 2.62% 3.09%