Annual report pursuant to Section 13 and 15(d)

Stock-Based Compensation and Warrants - Assumptions (Details)

v3.19.3.a.u2
Stock-Based Compensation and Warrants - Assumptions (Details) - $ / shares
1 Months Ended
Oct. 10, 2018
Dec. 26, 2017
Dec. 31, 2019
Dec. 31, 2018
Oct. 10, 2014
Closing stock price $ 0.88 $ 18.55   $ 0.56 $ 61.25
Expected life of warrant (years)   4 years 11 months 1 day 5 years    
Expected Volatility [Member]          
Warrants, Measurement Input 90.00% 85.00%      
Risk Free Interest Rate [Member]          
Warrants, Measurement Input 3.01% 2.42%