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Summary of Outstanding Stock Options Issued to Employees and Directors (Details) - USD ($)
6 Months Ended
Jun. 30, 2021
Dec. 31, 2020
SEC Schedule, 12-18, Supplemental Information, Property-Casualty Insurance Underwriters [Line Items]    
Number of Options, Outstanding, Ending 7,859,769 7,640,959
Average remaining term in years, Outstanding, Beginning 3 years 2 months 23 days  
Aggregate intrinsic value at date of grant, Outstanding, Beginning  
Aggregate intrinsic value at date of grant, Issued  
Average remaining term in years, Outstanding, Ending 3 years 5 months 12 days  
Number of Options, Cancelled/Expired (450,000)  
Aggregate intrinsic value at date of grant, Outstanding, Ending  
Number of Options, Exercisable 6,693,669  
Average remaining term in years, Exercisable 3 years 1 month 6 days  
Aggregate intrinsic value at date of grant, Exercisable  
Employees [Member]    
SEC Schedule, 12-18, Supplemental Information, Property-Casualty Insurance Underwriters [Line Items]    
Number of Options, Issued 520,000  
Average remaining term in years, Outstanding, Issued 7 years 8 months 8 days  
Number of Options, Cancelled/Expired (450,000)  
Directors [Member]    
SEC Schedule, 12-18, Supplemental Information, Property-Casualty Insurance Underwriters [Line Items]    
Number of Options, Issued 148,810  
Exercise price per share, Issued $ 0.42  
Average remaining term in years, Outstanding, Ending 7 years 9 months 18 days  
Minimum [Member]    
SEC Schedule, 12-18, Supplemental Information, Property-Casualty Insurance Underwriters [Line Items]    
Exercise price per share, Outstanding, Ending $ 0.34 $ 0.34
Exercise price per share, Exercisable 0.34  
Minimum [Member] | Employees [Member]    
SEC Schedule, 12-18, Supplemental Information, Property-Casualty Insurance Underwriters [Line Items]    
Exercise price per share, Outstanding, Ending 0.43  
Exercise price per share, Issued 0.43  
Maximum [Member]    
SEC Schedule, 12-18, Supplemental Information, Property-Casualty Insurance Underwriters [Line Items]    
Exercise price per share, Outstanding, Ending 0.87 $ 0.87
Exercise price per share, Exercisable 0.87  
Maximum [Member] | Employees [Member]    
SEC Schedule, 12-18, Supplemental Information, Property-Casualty Insurance Underwriters [Line Items]    
Exercise price per share, Outstanding, Ending 0.46  
Exercise price per share, Issued $ 0.46