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Summary of Significant Accounting Policies (Details) - Options and warrants
3 Months Ended
Aug. 31, 2015
$ / shares
shares
Options and warrants [Abstract]  
Outstanding May 31, 2015 1,148,000
Outstanding May 31, 2015 | $ / shares $ 0.60
Exercised (17,773)
Exercised | $ / shares $ 0.42
Forfeited (20,375)
Forfeited | $ / shares $ 0.69
Outstanding August 31, 2015 1,109,852
Outstanding August 31, 2015 | $ / shares $ 0.60