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Common Shares (Summary Of The Status Of Unvested Stock Options) (Details) - Employee, Directors and Consultants Stock Options [Member]
 6 Months Ended
Jun. 30, 2016
$ / shares
shares
Unvested, Number of options, beginning of period (in shares) | shares 246,250
Unvested, Number of options, end of period (in shares) | shares 246,250
Unvested, Weighted average grant date fair value, beginning of period (in dollars per share) | $ / shares $ 0.22
Unvested, Weighted average grant date fair value per option, end of period (in dollars per share) | $ / shares $ 0.22
Weighted average remaining amortization period 2 years 6 months