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Common Shares, Summary Of The Status Of Unvested Stock Options (Details) - $ / shares
 6 Months Ended 12 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Dec. 31, 2017
Granted, Number of options (in shares) 820,000 0  
Stock Options [Member]      
Unvested, Number of options, beginning of period (in shares) 246,250    
Granted, Number of options (in shares) 820,000    
Vested, Number of options (in shares) (266,662)    
Unvested, Number of options, end of period (in shares) 799,588   246,250
Unvested, Weighted average grant date fair value, beginning of period (in dollars per share) $ 0.22    
Granted, Weighted average grant-date fair value per option (in dollars per share) 0.48    
Vested, Weighted average grant-date fair value per option (in dollars per share) 0.48    
Unvested, Weighted average grant date fair value per option, end of period (in dollars per share) $ 0.40   $ 0.22
Weighted average remaining amortization period 1 year 2 months 12 days   11 months 27 days