Quarterly report pursuant to Section 13 or 15(d)

Convertible Instruments - Additional Information (Detail)

v3.3.0.814
Convertible Instruments - Additional Information (Detail) - USD ($)
 3 Months Ended 12 Months Ended
Sep. 21, 2015
Jun. 23, 2015
Feb. 06, 2015
Sep. 26, 2014
Aug. 31, 2015
May. 31, 2015
Aug. 31, 2014
May. 31, 2015
May. 31, 2010
Oct. 01, 2015
May. 31, 2013
Apr. 30, 2010
Class of Stock [Line Items]                        
Common stock, shares authorized         200,000,000 200,000,000   200,000,000       100,000,000
Common stock, par value         $ 0.001 $ 0.001   $ 0.001        
Amortization expense         $ 4,100   $ 356,000          
Principal amount of notes converted         35,627              
Loss on extinguishment of convertible notes         (584,177)              
Change in fair value of derivative liability         646,505              
Inducement interest         757,871              
Short term convertible note, principal amount         2,991,387 $ 1,634,458   $ 1,634,458        
Amortization of discount on convertible notes         $ 1,006,590   $ 355,875          
Subsequent Event                        
Class of Stock [Line Items]                        
Warrants to purchase common shares, shares                   6,300,000    
Exercise price of warrants, per share                   $ 1.00    
Common Stock                        
Class of Stock [Line Items]                        
Number of common shares issued upon conversion of preferred stock         10              
Conversion price         $ 0.50              
2013 Convertible Notes                        
Class of Stock [Line Items]                        
Convertible note, face amount                     $ 6,588,250  
Convertible note maturity start date         Nov. 30, 2013              
Convertible note maturity end date         Mar. 06, 2016              
Principal amount of notes converted               $ 4,221,250        
2013 Convertible Notes | Convertible Note at $0.75 per Share                        
Class of Stock [Line Items]                        
Conversion price         $ 0.75 $ 0.75   $ 0.75     $ 0.75  
Convertible note, principal amount         $ 50,000 $ 50,000   $ 50,000     $ 6,208,250  
Convertible notes, interest rate         5.00% 5.00%   5.00%        
Convertible note maturity date         Oct. 15, 2015     Oct. 15, 2015        
2013 Convertible Notes | Convertible Note at $0.65 per Share                        
Class of Stock [Line Items]                        
Conversion price                     $ 0.65  
Convertible note, principal amount                     $ 380,000  
2013 Convertible Notes | Minimum                        
Class of Stock [Line Items]                        
Convertible notes, interest rate                     5.00%  
2013 Convertible Notes | Maximum                        
Class of Stock [Line Items]                        
Convertible notes, interest rate                     10.00%  
2013 Convertible Notes | Investor                        
Class of Stock [Line Items]                        
Interest on convertible notes payment start date         Apr. 01, 2013              
2013 Convertible Notes | Detachable Common Stock Warrants | Investor                        
Class of Stock [Line Items]                        
Common stock warrant term         2 years              
Warrants to purchase common shares, shares         8,527,984              
2013 Convertible Notes | Detachable Common Stock Warrants | Investor | Minimum                        
Class of Stock [Line Items]                        
Exercise price of warrants, per share         $ 0.75              
2013 Convertible Notes | Detachable Common Stock Warrants | Investor | Maximum                        
Class of Stock [Line Items]                        
Exercise price of warrants, per share         $ 2.00              
2013 Convertible Notes | Convertible Note at $0.75 per Share                        
Class of Stock [Line Items]                        
Conversion price           $ 0.75   $ 0.75        
Principal amount of notes converted               $ 1,175,000        
Accrued but unpaid interest               $ 4,703        
Common stock issued upon conversion of notes               1,556,667        
Payments on convertible notes payable               $ 3,793        
2013 Convertible Notes | Convertible Note at $0.75 per Share | Convertible Note at $0.55 per Share                        
Class of Stock [Line Items]                        
Common stock issued upon conversion of notes               1,413,333        
Proceeds from exercise of warrants               $ 777,333        
2013 Convertible Notes | Convertible Note at $0.75 per Share | Detachable Common Stock Warrants                        
Class of Stock [Line Items]                        
Exercise price of warrants, per share           0.55   $ 0.55        
2013 Convertible Notes | Convertible Note at $0.75 per Share | Detachable Common Stock Warrants | Previously Reported                        
Class of Stock [Line Items]                        
Exercise price of warrants, per share           2.00   2.00        
2013 Convertible Notes | Convertible Note at $0.65 per Share                        
Class of Stock [Line Items]                        
Conversion price           0.75   $ 0.75        
Principal amount of notes converted               $ 3,046,250        
Accrued but unpaid interest               $ 86,296        
Common stock issued upon conversion of notes               4,181,079        
2013 Convertible Notes | Convertible Note at $0.65 per Share | Detachable Common Stock Warrants                        
Class of Stock [Line Items]                        
Exercise price of warrants, per share           $ 1.00   $ 1.00        
Warrants to purchase shares of common stock           6,310,677   6,310,677        
Term of warrants               7 months        
AVCP Convertible Notes | Alpha Venture Capital Partners, L.P.                        
Class of Stock [Line Items]                        
Conversion price           $ 0.675   $ 0.675        
Common stock, par value   $ 0.001                    
Principal amount of notes converted   $ 3,535,627                    
Common stock issued upon conversion of notes   5,237,966                    
Sale of convertible notes           $ 4,000,000            
Percentage of weighted average price per share           90.00%            
Weighted average price of deemed issued shares           $ 0.75   $ 0.75        
Increase / Decrease in number of shares of common stock           5,185,185   5,185,185        
AVCP Convertible Notes | Alpha Venture Capital Partners, L.P. | 3-Month Unsecured Convertible Promissory Note                        
Class of Stock [Line Items]                        
Preferred Stock, Share issuance price           $ 0.9444   $ 0.9444        
Conversion price           $ 1.00   $ 1.00        
Convertible note, face amount           $ 1,500,000   $ 1,500,000        
Convertible notes, interest rate           1.20%   1.20%        
Convertible note maturity date         May 05, 2015              
Additional convertible promissory notes that may be issued           $ 6,000,000   $ 6,000,000        
Percentage reduction to conversion price               10.00%        
Convertible note, conversion price description         The conversion price was subject to (i) adjustment for stock splits and similar corporate events and (ii) reduction to a price per share that is 10% below the lowest sale price that is below $.9444 per share, for shares of common stock sold or deemed sold in future securities offerings, including sales to AVCP and its designees subject to certain exempt transactions.              
AVCP Convertible Notes | Alpha Venture Capital Partners, L.P. | Previously Reported                        
Class of Stock [Line Items]                        
Increase / Decrease in number of shares of common stock           3,500,000   3,500,000        
AVCP Convertible Notes | Warrants Expire on December 31, 2019 | Alpha Venture Capital Partners, L.P.                        
Class of Stock [Line Items]                        
Warrants to purchase common shares, shares       250,000                
Exercise price of warrants, per share       $ 0.50                
Term of warrants       5 years                
Warrants, expiration date         Dec. 31, 2019              
AVCP Convertible Notes | Warrants Exercisable on February 28, 2020 | Alpha Venture Capital Partners, L.P.                        
Class of Stock [Line Items]                        
Warrants to purchase common shares, shares     75,000                  
Exercise price of warrants, per share     $ 0.50                  
Term of warrants     5 years                  
Warrants, expiration date         Feb. 28, 2020              
AVCP Convertible Notes | Additional 5-year Warrant | Alpha Venture Capital Partners, L.P.                        
Class of Stock [Line Items]                        
Exercise price of warrants, per share   $ 0.675                    
Common stock issued upon conversion of notes   1,000,000                    
Term of warrants   5 years                    
Loss on extinguishment of convertible notes   $ 584,177                    
Change in fair value of derivative liability   646,505                    
Inducement interest   $ 757,871                    
AVCP Convertible Notes | 2-Year Unsecured Convertible Promissory Note | Alpha Venture Capital Partners, L.P.                        
Class of Stock [Line Items]                        
Conversion price           $ 1.00   $ 1.00        
Convertible note, face amount           $ 2,000,000   $ 2,000,000        
Convertible notes, interest rate           5.00%   5.00%        
Convertible note maturity date               Sep. 26, 2016        
Common stock warrant term               2 years        
Short-Term Convertible Notes | Subsequent Event                        
Class of Stock [Line Items]                        
Warrants to purchase common shares, shares 718,328                      
Exercise price of warrants, per share $ 0.675                      
Common stock issued upon conversion of notes 4,095,099                      
Short term convertible note, principal amount $ 2,700,000                      
Short-Term Convertible Notes | 6-Month Unsecured Convertible Promissory Notes                        
Class of Stock [Line Items]                        
Conversion price           $ 0.75   $ 0.75        
Common stock, par value           $ 0.001   $ 0.001        
Convertible notes, interest rate           7.00%   7.00%        
Proceeds from issuance of debt               $ 4,000,000        
Debt Instrument, Term               6 months        
Short-Term Convertible Notes | 6-Month Unsecured Convertible Promissory Notes | Subsequent Event                        
Class of Stock [Line Items]                        
Conversion price $ 0.675                      
Conversion price, discount rate 10.00%                      
Short-Term Convertible Notes | Investor Warrants | 6-Month Unsecured Convertible Promissory Notes                        
Class of Stock [Line Items]                        
Common stock, par value           $ 0.001   $ 0.001        
Warrants to purchase common shares, shares           1,061,586   1,061,586        
Exercise price of warrants, per share           $ 0.75   $ 0.75        
Term of warrants               5 years        
Short term convertible note, principal amount           $ 1,300,000   $ 1,300,000        
Short-Term Convertible Notes | Common Stock Warrants | Subsequent Event                        
Class of Stock [Line Items]                        
Exercise price of warrants, per share $ 0.675                      
Exercise price of warrants, per share, discount rate 10.00%                      
Short-Term Convertible Notes | Common Stock Warrants | 6-Month Unsecured Convertible Promissory Notes                        
Class of Stock [Line Items]                        
Common stock, par value         $ 0.001              
Short term convertible note, principal amount         $ 2,700,000              
Series B Convertible Preferred Stock                        
Class of Stock [Line Items]                        
Series B Convertible preferred stock, shares issued         95,100 95,100   95,100 400,000      
Preferred Stock, Share issuance price                 $ 5.00      
Cash proceeds                 $ 2,009,000      
Series B Convertible preferred stock, shares outstanding         95,100 95,100   95,100        
Constructive dividend to Preferred stock holders         $ 6,000,000              
Liquidation preference on common shares         $ 5.00              
Dividends are payable to preferred stock holders         0.25              
Convertible preferred stock, par value         $ 0.001 $ 0.001   $ 0.001 $ 0.001      
Common stock, par value                 $ 0.001