CONDENSED CONSOLIDATED BALANCE SHEETS (Parentheticals) (USD $)	Aug. 31, 2013	May 31, 2013
Allowance for doubtful accounts (in Dollars)	$ 120,405	$ 115,730
Preferred Stock, Shares Authorized	5,000,000	5,000,000
Preferred Stock, Shares Issued	0	0
Preferred Stock, Shares Outstanding	0	0
Preferred Stock, Par Value (in Dollars per share)
Common Stock, Par Value (in Dollars per share)	$ 0.08	$ 0.08
Common Stock, Shares Authorized	25,000,000	25,000,000
Common Stock, Shares Issued	7,276,714	7,274,714
Common Stock, Shares Outstanding	7,276,714	7,274,714