Quarterly report pursuant to Section 13 or 15(d)

STOCK-BASED COMPENSATION STOCK-BASED COMPENSATION (Details)

v3.19.3
STOCK-BASED COMPENSATION STOCK-BASED COMPENSATION (Details) - $ / shares
3 Months Ended 9 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Sep. 30, 2019
Sep. 30, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]        
Volatility 106.00% 86.80% 112.30% 90.20%
Risk-Free Interest Rate 1.70% 2.80% 2.30% 2.60%
Expected Term (in years) 5 years 10 months 13 days 5 years 7 months 21 days 5 years 9 months 5 years 4 months 21 days
Dividend Rate 0.00% 0.00% 0.00% 0.00%
Fair Value Per Share on Grant Date (in USD per share) $ 3.16 $ 3.08 $ 3.83 $ 0.54