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Shareholders' Equity - Stock option activity (Details) - USD ($)
6 Months Ended 12 Months Ended
Jun. 30, 2020
Dec. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Number of shares, Options Outstanding at end of the period 112,649,035  
Number of shares, Exercisable options at end of the period 68,036,535  
Share options [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Number of shares, Options Outstanding at beginning of the period 94,349,035  
Number of shares, Granted 18,800,000  
Number of shares, Forfeited (500,000)  
Number of shares, Options Outstanding at end of the period 112,649,035 94,349,035
Number of shares, Exercisable options at end of the period 68,036,535  
Weighted average exercise price, Outstanding at beginning of the period $ 0.10  
Weighted average exercise price, Granted 0.02  
Weighted average exercise price, Forfeited 0.04  
Weighted average exercise price, Outstanding at end of the period 0.09 $ 0.10
Options exercisable at end of the period, Weighted average exercise price 0.13  
Weighted average grant date fair value, Granted 0.02  
Weighted average grant date fair value, Forfeited $ 0.03  
Weighted average remaining contractual term, Options outstanding during the period (in years) 7 years 7 months 6 days 7 years 7 months 6 days
Weighted average remaining contractual term, Options exercisable at end of the period (in years) 6 years 9 months 18 days  
Aggregate intrinsic value, Options outstanding at end of the period $ 110,405  
Aggregate intrinsic value, Options exercisable at end of the period $ 42,305