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Common Shares, Summary Of The Status Of Unvested Stock Options (Details) - $ / shares
 6 Months Ended 12 Months Ended
Jun. 30, 2017
Dec. 31, 2016
Capital Stock [Abstract]    
Unvested, Number of options, beginning of period (in shares) 296,250  
Unvested, Number of options, end of period (in shares) 296,250 296,250
Unvested, Weighted average grant date fair value, beginning of period (in dollars per share) $ 0.30  
Unvested, Weighted average grant date fair value per option, end of period (in dollars per share) $ 0.30 $ 0.30
Weighted average remaining amortization period 1 year 2 months 12 days 1 year 2 months 12 days