Quarterly report pursuant to Section 13 or 15(d)

Consolidated Balance Sheets (Parenthetical)

v3.7.0.1
Consolidated Balance Sheets (Parenthetical) - $ / shares
Feb. 28, 2017
May 31, 2016
Common stock, par value $ 0.001 $ 0.001
Common stock, shares authorized 350,000,000 250,000,000
Common stock, shares issued 149,468,244 123,335,634
Common stock, shares outstanding 149,468,244 123,335,634
Series B Convertible Preferred Stock    
Series B Convertible preferred stock, par value $ 0.001 $ 0.001
Series B Convertible preferred stock, shares authorized 400,000 400,000
Series B Convertible preferred stock, shares issued 92,100 95,100
Series B Convertible preferred stock, shares outstanding 92,100 95,100