Quarterly report pursuant to Section 13 or 15(d)

Warrant Liability (Details 2)

v3.21.2
Warrant Liability (Details 2) - $ / shares
6 Months Ended 12 Months Ended
Jun. 30, 2021
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Expected life (years)   3 years 10 months 24 days 3 years 8 months 12 days   3 years 8 months 12 days 3 years 8 months 12 days
Expected volatility   63.20% 58.60%     56.80%
Expected dividend rate   0.00% 0.00% 0.00% 0.00% 0.00%
Sep-2018 Warrants [Member]            
Expected forfeiture rate 0.00%          
Expected life (years) 2 months 12 days          
Expected volatility 72.30%          
Risk free rate 0.40%          
Expected dividend rate 0.00%          
Exercise price $ 1.00          
Market price $ 1.41          
Aug-2020 Warrants [Member]            
Expected forfeiture rate 0.00%          
Expected life (years) 1 year 1 month 6 days          
Expected volatility 78.10%          
Risk free rate 0.40%          
Expected dividend rate 0.00%          
Exercise price $ 0.75          
Market price $ 1.41          
Feb-2021 Warrant [Member]            
Expected forfeiture rate 0.00%          
Expected life (years) 2 years 7 months 6 days          
Expected volatility 75.60%          
Risk free rate 0.60%          
Expected dividend rate 0.00%          
Exercise price $ 1.35          
Market price $ 1.41