Annual report pursuant to Section 13 and 15(d)

Consolidated Statement of Changes in Stockholders' (Deficit) Equity (Parenthetical)

v3.7.0.1
Consolidated Statement of Changes in Stockholders' (Deficit) Equity (Parenthetical) - $ / shares
 12 Months Ended
May 31, 2017
May 31, 2016
Proceeds from Registered Direct Offering, per share $ 0.75  
Private Equity Offering One    
Proceeds from private equity offering, per share   $ 0.75
Private Equity Offering Two    
Proceeds from private equity offering, per share 1.00 1.00
Maximum    
Common shares issued to extinguish promissory notes payable, convertible debt and related interest, per share   0.75
Minimum    
Common shares issued to extinguish promissory notes payable, convertible debt and related interest, per share   0.675
Common Stock    
Proceeds from Registered Direct Offering, per share 0.75  
Common Stock | Private Equity Offering One    
Proceeds from private equity offering, per share   0.75
Common Stock | Private Equity Offering Two    
Proceeds from private equity offering, per share 1.00 1.00
Additional Paid-in Capital | Maximum    
Common shares issued to extinguish promissory notes payable, convertible debt and related interest, per share   0.75
Additional Paid-in Capital | Minimum    
Common shares issued to extinguish promissory notes payable, convertible debt and related interest, per share   0.675
Series B Convertible Preferred Stock    
Proceeds from private equity offering, per share 0.5  
Series B Convertible Preferred Stock | Preferred Stock    
Proceeds from private equity offering, per share 0.5  
Series B Convertible Preferred Stock | Common Stock    
Proceeds from private equity offering, per share 0.5  
Conversion Features Two    
Common shares issued to extinguish promissory notes payable, convertible debt and related interest, per share   0.675
Conversion Features Four    
Common shares issued to extinguish promissory notes payable, convertible debt and related interest, per share   0.75
Exercise Price 1    
Warrants granted per share 0.5 0.5
Exercise Price 1 | Common Stock    
Warrants granted per share 0.5 0.50
Exercise Price 2    
Warrants granted per share 0.75 0.75
Exercise Price 2 | Common Stock    
Warrants granted per share $ 0.75 $ 0.75