Quarterly report pursuant to Section 13 or 15(d)

Equity - Summary of Assumptions Used (Details)

v3.20.2
Equity - Summary of Assumptions Used (Details) - Stock options
6 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Class of Stock [Line Items]    
Risk free interest rate, minimum (percent) 0.28% 0.95%
Risk free interest rate, maximum (percent) 0.46% 2.24%
Volatility, minimum (percent) 126.40% 70.18%
Volatility, maximum (percent) 127.98% 89.11%
Expected dividend yield (percent) 0.00% 0.00%
Minimum    
Class of Stock [Line Items]    
Expected life (years) 3 years 9 months 5 years
Maximum    
Class of Stock [Line Items]    
Expected life (years) 6 years 3 months 6 years 3 months