CONDENSED CONSOLIDATED BALANCE SHEETS (PARENTHETICAL) (USD $) (USD $)	Nov. 30, 2011	May 31, 2011
Allowance for doubtful accounts	$ 65,183	$ 32,204
Common Stock, Par Value Per Share	$ 0.08	$ 0.08
Common Stock,Shares Authorized	25,000,000	25,000,000
Common Stock, Shares Issued	6,868,339	6,868,339
Common Stock, Shares Outstanding	6,868,339	6,868,339
Preferred Stock, Par Value Per Share	$ 0	$ 0
Preferred Stock,Shares Authorized	5,000,000	5,000,000
Preferred Stock, Shares Issued	0	0
Preferred Stock, Shares Outstanding	0	0