Quarterly report pursuant to Section 13 or 15(d)

Stockholders' Equity - Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions (Details)

v3.20.1
Stockholders' Equity - Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions (Details)
3 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Dividend yield 0.00% 0.00%
Risk-free interest rate 1.41%  
Risk-free interest rate, minimum   2.19%
Risk-free interest rate, maximum   2.54%
Expected volatility 111.05%  
Expected volatility, minimum   105.20%
Expected volatility, maximum   106.10%
Expected life (in years) 5 years  
Minimum [Member]    
Expected life (in years)   5 years
Maximum [Member]    
Expected life (in years)   10 years