Significant Accounting Policies (Detail) - Options and warrants granted, exercised, expired, cancelled and outstanding (USD $)	3 Months Ended
	Aug. 31, 2012	May 31, 2012
Number of Options and Warrants, Outstanding	996,500	1,004,500
Number of Options and Warrants, Weighted Average Exercise Price (in Dollars per share)	$ 0.46	$ 0.46
Granted
Granted (in Dollars per share)
Exercised
Exercised (in Dollars per share)
Cancelled or expired	(8,000)
Cancelled or expired (in Dollars per share)	$ 0.41
Employee
Number of Options and Warrants, Outstanding	996,500	1,004,500
Granted
Exercised
Cancelled or expired	(8,000)
Non - Employee
Number of Options and Warrants, Outstanding
Granted
Exercised
Cancelled or expired