Annual report pursuant to Section 13 and 15(d)

Stock-Based Compensation and Warrants - (Details)

v3.20.4
Stock-Based Compensation and Warrants - (Details) - $ / shares
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Stock-Based Compensation and Warrants    
Exercise price $ 0.42 $ 0.42
Expected dividends 0.00% 0.00%
Expected volatility 88.00% 84.00%
Risk -free interest rate 0.31% 1.61%
Expected life of option 4 years 3 months 18 days 4 years 6 months