Quarterly report pursuant to Section 13 or 15(d)

Related Party Transactions - Additional Information (Detail)

v3.5.0.2
Related Party Transactions - Additional Information (Detail) - USD ($)
 3 Months Ended 12 Months Ended
May 10, 2016
Aug. 31, 2016
May 31, 2016
Jan. 19, 2016
Private Equity Offering        
Related Party Transaction [Line Items]        
Proceeds from private equity offering   $ 729,500 $ 37,600,000  
Shares of common stock sold at private equity offering   729,500 48,659,338  
Warrants to purchase common shares, shares   774,097    
Exercise price of warrants, per share   $ 1.00    
Directors | Consulting Agreement        
Related Party Transaction [Line Items]        
Compensation payable per month       $ 20,000
Jordan G. Naydenov | Private Equity Offering        
Related Party Transaction [Line Items]        
Proceeds from private equity offering $ 1,000,000      
Shares of common stock sold at private equity offering 1,000,000      
Warrants to purchase common shares, shares 250,000      
Exercise price of warrants, per share $ 1.35