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Significant Accounting Policies (Details) - Options Activity
9 Months Ended
Feb. 29, 2016
$ / shares
shares
Options Activity [Abstract]  
Outstanding May 31, 2015 | shares 1,148,000
Outstanding May 31, 2015 | $ / shares $ 0.60
Granted | shares 70,000
Granted | $ / shares $ 1.04
Exercised | shares (92,625)
Exercised | $ / shares $ 0.41
Cancelled or expired | shares (21,375)
Cancelled or expired | $ / shares $ 0.70
Outstanding February 29, 2016 | shares 1,104,000
Outstanding February 29, 2016 | $ / shares $ 0.64