Consolidated Balance Sheets (Parenthetical) (USD $)	May 31, 2012	May 31, 2011
Allowance for doubtful accounts	$ 50,000	$ 75,000
Preferred stock stated value	$ 100	$ 100
Preferred stock shares outstanding	50,000	50,000
Preferred stock shares authorized	20,750,000	20,750,000
Common stock shares outstanding	26,111,201	26,111,201
Common stock shares authorized	5,000,000,000	5,000,000,000