Quarterly report pursuant to Section 13 or 15(d)

Convertible Instruments - Additional Information (Detail)

v3.10.0.1
Convertible Instruments - Additional Information (Detail)
 1 Months Ended 3 Months Ended 12 Months Ended
Jun. 26, 2018
USD ($)
$ / shares
Jan. 31, 2018
USD ($)
$ / shares
shares
Aug. 31, 2018
USD ($)
$ / shares
shares
Aug. 31, 2018
USD ($)
$ / shares
shares
Aug. 31, 2017
USD ($)
May 31, 2018
USD ($)
$ / shares
shares
May 31, 2010
USD ($)
$ / shares
shares
Jun. 07, 2018
shares
Nov. 01, 2017
shares
Aug. 24, 2017
shares
Aug. 23, 2017
shares
Apr. 30, 2010
shares
Class of Stock [Line Items]                        
Common stock, shares authorized | shares     450,000,000 450,000,000   375,000,000   450,000,000 200,000,000 375,000,000 350,000,000 100,000,000
Common stock, par value | $ / shares     $ 0.001 $ 0.001   $ 0.001            
Debt discount     $ 626,242 $ 626,242                
Amortization of debt discount       64,580 $ 444,152              
Amortization of debt issuance costs       9,178 113,700              
Proceeds from sale of common stock and warrant       8,499,300                
Interest expense       104,630 75,289              
Conversion of Preferred Stock to Common Stock                        
Class of Stock [Line Items]                        
Undeclared dividend       199,200   $ 199,000            
Accrued dividend     $ 398,400 398,400   $ 387,000            
Short-Term Convertible Notes                        
Class of Stock [Line Items]                        
Conversion price | $ / shares           $ 0.75            
Convertible note, aggregate principal   $ 6,000,000       $ 4,890,000            
Convertible note maturity date   Jan. 31, 2018       Jan. 31, 2018            
Convertible notes, interest rate           7.00%            
Common stock warrants to purchase shares | shares   7,718,010                    
Exercise price of warrants, per share | $ / shares   $ 0.75                    
Payment obligation against which common stock issued   $ 5,788,500                    
Accrued but unpaid interest   $ 243,000                    
Number of shares to be sold | shares   12,062,728                    
Sale of Stock, Price Per Share | $ / shares   $ 0.50                    
Proceeds from sale of common stock and warrant   $ 6,000,000                    
Repayment of note   $ 259,000       $ 250,000            
Interest expense       $ 0 75,000              
Short-Term Convertible Notes | Investor Warrants                        
Class of Stock [Line Items]                        
Common stock warrants to purchase shares | shares     4,025,656 4,025,656                
Exercise price of warrants, per share | $ / shares     $ 1.00 $ 1.00                
Term of warrants     5 years                  
Short-Term Convertible Notes | Detachable Common Stock Warrants                        
Class of Stock [Line Items]                        
Debt discount     $ 600,000 $ 600,000   1,500,000            
Amortization of debt discount       65,000 444,000              
Unamortized issuance costs           $ 400,000            
Amortization of debt issuance costs       0 114,000              
Note                        
Class of Stock [Line Items]                        
Convertible notes, interest rate 10.00%                      
Debt discount     600,000 600,000                
Amortization of debt discount       65,000 0              
Unamortized issuance costs     $ 100,000 100,000                
Amortization of debt issuance costs       10,000 0              
Convertible promissory note maturity period 2 years                      
Convertible promissory note principle amount $ 5,700,000                      
Proceeds from convertible promissory note $ 5,000,000                      
Common stock conversion price | $ / shares $ 0.55                      
Convertible promissory note maximum redemption amount $ 350,000                      
Convertible promissory note redemption description The Investor may redeem any portion of the Note, at any time after six months from the issue date upon five trading days' notice, subject to a maximum monthly redemption amount of $350,000.                      
Consecutive trading days 5                      
Terms of conversion 1.5                      
Interest expense       $ 104,000 $ 0              
Common Stock                        
Class of Stock [Line Items]                        
Number of common shares issued upon conversion of preferred stock | shares     10 10                
Conversion price | $ / shares     $ 0.50 $ 0.50                
Series B Convertible Preferred Stock                        
Class of Stock [Line Items]                        
Series B Convertible preferred stock, shares issued | shares     92,100 92,100   92,100 400,000          
Preferred Stock, Share issuance price | $ / shares             $ 5.00          
Cash proceeds             $ 2,009,000          
Series B Convertible preferred stock, shares outstanding | shares     92,100 92,100   92,100            
Constructive dividend to Preferred stock holders       $ 6,000,000                
Liquidation preference on common shares | $ / shares     $ 5.00 $ 5.00                
Dividends are payable to preferred stock holders | $ / shares       0.25                
Convertible preferred stock, par value | $ / shares     $ 0.001 $ 0.001   $ 0.001 $ 0.001