Annual report pursuant to section 13 and 15(d)

Related Party Transactions - Additional Information (Detail)

v2.4.0.8
Related Party Transactions - Additional Information (Detail) (USD $)
12 Months Ended 115 Months Ended
May 31, 2013
May 31, 2012
May 31, 2013
Related Party Transaction [Line Items]      
Issuance of common stock shares for notes payable 8,106,282    
Interest expense related amortization $ 1,703,616 $ 2,063 $ 2,440,542
Note Payable - 15%, Due 2014
     
Related Party Transaction [Line Items]      
Convertible notes issued face value 500,000    
Convertible notes, interest payable rate 15.00%   15.00%
Convertible notes, maturity date Apr. 11, 2014    
Issuance of common stock shares for notes payable 150,000    
Interest payable, per share of common stock $ 0.50   $ 0.50
Note Payable - 5%, Due 2015
     
Related Party Transaction [Line Items]      
Convertible notes issued face value 1,000,000    
Convertible notes, interest payable rate 5.00%   5.00%
Convertible notes, maturity date Oct. 16, 2015    
Convertible notes, conversion price $ 0.75   $ 0.75
Common stock warrants issued 1,333,333   1,333,333
Common stock warrants, exercise price 2.00   2.00
Common stock warrants, expire date Oct. 16, 2014   Oct. 16, 2014
Convertible note, carrying value 207,000   207,000
Interest expense related amortization $ 207,000