Quarterly report pursuant to Section 13 or 15(d)

Private Securities Offering - Additional Information (Detail)

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Private Securities Offering - Additional Information (Detail) - USD ($)
 3 Months Ended 12 Months Ended
Aug. 31, 2015
May. 31, 2015
Equity and Equity Units Offering Disclosure [Line Items]    
Convertible notes   $ 4,862,257
Common stock, par value $ 0.001 $ 0.001
Short-Term Convertible Notes | 6-Month Unsecured Convertible Promissory Notes    
Equity and Equity Units Offering Disclosure [Line Items]    
Convertible notes   $ 3,981,050
Convertible note conversion price per share   $ 0.75
Convertible notes term   6 months
Convertible notes, interest rate   7.00%
Common stock, par value   $ 0.001
Short-Term Convertible Notes | 6-Month Unsecured Convertible Promissory Notes | Investor Warrants    
Equity and Equity Units Offering Disclosure [Line Items]    
Common stock, par value   $ 0.001
Warrant covering common stock shares purchased, percentage   20.00%
Exercise price of warrants, per share   $ 0.75
Term of warrants   5 years
Warrants to purchase common shares, shares   1,061,586
Private Equity Offering    
Equity and Equity Units Offering Disclosure [Line Items]    
Common stock, par value $ 0.001  
Warrant covering common stock shares purchased, percentage 50.00%  
Exercise price of warrants, per share $ 0.75  
Term of warrants 5 years  
Units sold at private equity offering 10,685,620  
Warrants to purchase common shares, shares 5,342,790  
Private Equity Offering | Placement Agent    
Equity and Equity Units Offering Disclosure [Line Items]    
Exercise price of warrants, per share $ 0.75  
Term of warrants 5 years  
Warrants to purchase common shares, shares 1,272,131