CONDENSED CONSOLIDATED BALANCE SHEETS (Parentheticals) (USD $)	Nov. 30, 2012	May 31, 2012
Allowance for doubtful accounts (in Dollars)	$ 117,401	$ 113,191
Accumulated depreciation and amortization (in Dollars)	$ 937,947	$ 712,176
Preferred Stock, Par Value Per Share (in Dollars per share)	$ 0	$ 0
PreferredStockSharesAuthorized	5,000,000	5,000,000
Preferred Stock, Shares Issued	0	0
Preferred Stock, Shares Outstanding	0	0
Common Stock, Par Value Per Share (in Dollars per share)	$ 0.08	$ 0.08
Common Stock, Shares Authorized	25,000,000	25,000,000
Common Stock, Shares Issued	6,972,339	6,952,339
Common Stock, Shares Outstanding	6,972,339	6,952,339