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Significant Accounting Policies (Detail) - Options and warrants granted, exercised, expired, cancelled and outstanding (USD $)
 6 Months Ended
Nov. 30, 2012
Number of Options and Warrants, Outstanding 1,004,500
Number of Options and Warrants, Weighted Average Exercise Price (in Dollars per share) $ 0.46
Granted 30,000
Granted (in Dollars per share) $ 0.67
Exercised (20,000)
Exercised (in Dollars per share) $ 0.30
Cancelled or expired (11,000)
Cancelled or expired (in Dollars per share) $ 0.41
Number of Options and Warrants, Outstanding 1,003,500
Number of Options and Warrants, Weighted Average Exercise Price (in Dollars per share) $ 0.47
Employee
  
Number of Options and Warrants, Outstanding 1,004,500
Granted 30,000
Exercised (20,000)
Cancelled or expired (11,000)
Number of Options and Warrants, Outstanding 1,003,500
Non - Employee
  
Number of Options and Warrants, Outstanding   
Granted   
Exercised   
Cancelled or expired   
Number of Options and Warrants, Outstanding