Annual report pursuant to Section 13 and 15(d)

Schedule of Share Based Payment Assumptions (Details)

v3.21.1
Schedule of Share Based Payment Assumptions (Details)
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Share-based Payment Arrangement [Abstract]    
Volatility, minimum 100.50% 106.10%
Volatility, maximum 107.40% 111.30%
Risk-free interest rate, minimum 0.34% 1.59%
Risk-free interest rate, maximum 1.74% 2.65%
Dividend yield 0.00% 0.00%
Expected life 6 years 6 years