Commitments and Contingencies (Detail) (USD $)	3 Months Ended				3 Months Ended
	Aug. 31, 2012	Aug. 31, 2011	May 31, 2012	Jun. 10, 2011	Aug. 31, 2009 Monthly	Jun. 10, 2011 Line of Credit [Member]
Line of Credit Facility, Maximum Borrowing Capacity				$ 400,000
Debt Instrument, Basis Spread on Variable Rate						1.00%
Line of Credit Facility, Interest Rate Description		1.0% plus the Wall Street Journal Prime West Coast Edition prime rate
Line of Credit Facility, Expiration Date	Feb. 24, 2013
Line of Credit Facility, Amount Outstanding	0		43,000
Lease Initiation Date	Sep. 01, 2009
Lease Expiration Date	Aug. 31, 2016
Operating Leases, Rent Expense, Minimum Rentals					18,490
Operating Leases, Rent Expense	$ 20,204