Condensed Consolidated Balance Sheet (Parenthetical) (USD $)	Aug. 31, 2011	May 31, 2011
Condensed Consolidated Balance Sheet [Abstract]
Series B Convertible preferred stock, par value
Series B Convertible preferred stock, shares authorized	400,000	400,000
Series B Convertible preferred stock, shares issued	311,800	311,800
Series B Convertible preferred stock, shares outstanding	311,800	311,800
Common stock, par value
Common stock, shares authorized	100,000,000	100,000,000
Common stock, shares outstanding	22,290,982	22,290,982
Common stock, shares issued	22,490,982	22,490,982
Treasury stock, shares	200,000	200,000