XML 52 R41.htm IDEA: XBRL DOCUMENT v3.21.2
Schedule of Fair Value of Warrants (Details) - $ / shares
6 Months Ended 12 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Dec. 31, 2020
Subsidiary, Sale of Stock [Line Items]      
Expected life in years 5 years 8 months 12 days 5 years 9 months 21 days  
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate 0.52% 1.33%  
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate  
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate 95.52% 99.52%  
November 2019 Offering [Member] | Fair Value, Inputs, Level 3 [Member] | Warrant [Member]      
Subsidiary, Sale of Stock [Line Items]      
Expected life in years 3 years 4 months 17 days   3 years 10 months 17 days
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate 0.46%   27.00%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate  
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate 72.62%   88.46%
Share Price $ 1.40   $ 1.36