Quarterly report pursuant to Section 13 or 15(d)

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

v3.20.2
Stockholders' Equity - Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions (Details)
6 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Dividend yield 0.00% 0.00%
Risk-free interest rate, minimum 0.22% 1.90%
Risk-free interest rate, maximum 1.52% 2.54%
Expected volatility, minimum 113.80% 105.20%
Expected volatility, maximum 117.20% 106.10%
Expected life (in years) 5 years 5 years
2020 Stock Appreciation Rights Plan [Member]    
Dividend yield 0.00%  
Risk-free interest rate 0.22%  
Expected volatility 116.90%  
Expected life (in years) 5 years