General form of registration statement for all companies including face-amount certificate companies

Convertible Instruments - Additional Information (Detail)

v3.3.1.900
Convertible Instruments - Additional Information (Detail) - USD ($)
 3 Months Ended 4 Months Ended 6 Months Ended 12 Months Ended
Sep. 21, 2015
Jun. 23, 2015
Feb. 06, 2015
Sep. 26, 2014
Nov. 30, 2015
May. 31, 2015
Nov. 30, 2014
May. 31, 2015
Nov. 30, 2015
Nov. 30, 2014
May. 31, 2015
May. 31, 2014
May. 31, 2010
Jun. 11, 2015
May. 31, 2013
Apr. 30, 2010
Class of Stock [Line Items]                                
Common stock, shares authorized         200,000,000 200,000,000   200,000,000 200,000,000   200,000,000 100,000,000       100,000,000
Exercise price of warrants, per share                           $ 1.02    
Principal amount of notes converted                 $ 35,627   $ 4,221,250 $ 2,450,000        
Payments on convertible notes payable                       500,000        
Warrants issued to investors                     285,118          
Amortization expense                 6,800 $ 1,044,000 $ 2,145,000 3,807,000        
Sale of convertible notes                   2,000,000 7,481,050 1,200,000        
Amortization of discount on convertible notes         $ 1,114,901   $ 688,465   $ 2,121,491 1,044,340 $ 2,145,010 $ 3,807,320        
Common stock, par value         $ 0.001 $ 0.001   $ 0.001 $ 0.001   $ 0.001        
Proceeds from exercise of warrants                   777,333 $ 1,141,435 $ 50,000        
Interest expense associated with extension of warrant expiration                 $ 866,713              
Loss on extinguishment of convertible notes                 (584,177)              
Change in fair value of derivative liability             (805,575) $ (838,643) 646,505 (805,575) (838,643)          
Inducement interest         $ 866,713   $ 353,333   1,624,324 $ 353,333 $ 1,526,254 $ 193,160        
Convertible notes, repayment of principal and interest                 $ 789,140              
Common Stock                                
Class of Stock [Line Items]                                
Number of common shares issued upon conversion of preferred stock         10 10   10 10   10          
Conversion price         $ 0.50 $ 0.50   $ 0.50 $ 0.50   $ 0.50          
Series B Convertible Preferred Stock                                
Class of Stock [Line Items]                                
Series B Convertible preferred stock, shares issued         95,100 95,100   95,100 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 95,100   95,100 95,100        
Constructive dividend to Preferred stock holders                 $ 6,000,000   $ 6,000,000          
Liquidation preference on common shares         $ 5.00 $ 5.00   $ 5.00 $ 5.00   $ 5.00          
Dividends are payable to preferred stock holders                 0.25   0.25          
Convertible preferred stock, par value         0.001 $ 0.001   $ 0.001 $ 0.001   $ 0.001 $ 0.001      
Common stock, par value                         $ 0.001      
Convertible Note at $0.75 per Share                                
Class of Stock [Line Items]                                
Warrants to purchase common shares, shares           1,938,974   1,938,974     1,938,974          
Proceeds from exercise of warrants                     $ 1,066,435          
Inducement interest                     $ 555,000          
Minimum                                
Class of Stock [Line Items]                                
Preferred Stock, Share issuance price           $ 0.33   $ 0.33     $ 0.33 $ 0.40        
Exercise price of warrants, per share           0.75   0.75     0.75          
Maximum                                
Class of Stock [Line Items]                                
Preferred Stock, Share issuance price           0.60   0.60     0.60 $ 0.67        
Exercise price of warrants, per share           2.00   2.00     2.00          
Alpha Venture Capital Partners, L.P.                                
Class of Stock [Line Items]                                
Exercise price of warrants, per share   $ 0.675       $ 0.50   $ 0.50     $ 0.50          
Principal amount of notes converted   $ 3,535,627.15                            
Common stock issued upon conversion of notes   5,237,966                            
Warrants to purchase shares of common stock   1,000,000                            
Term of warrants                     5 years          
Alpha Venture Capital Partners, L.P. | Warrants Expire on December 31, 2019                                
Class of Stock [Line Items]                                
Warrants to purchase common shares, shares           250,000   250,000     250,000          
Alpha Venture Capital Partners, L.P. | Warrants Exercisable on February 28, 2020                                
Class of Stock [Line Items]                                
Warrants to purchase common shares, shares           75,000   75,000     75,000          
Short-Term Convertible Notes                                
Class of Stock [Line Items]                                
Accrued but unpaid interest                 $ 17,830              
Principal amount of notes converted                 $ 525,000              
Common stock issued upon conversion of notes                 723,773              
Payments on convertible notes payable                 $ 762,250              
Amortization of discount on convertible notes                 1,784,000   $ 219,000          
Inducement interest                 330,000              
Aggregate original principal amount of Short-Term Convertible Notes $ 2,700,000                              
Convertible notes, repayment of principal and interest                 $ 789,000              
Short-Term Convertible Notes | 6-Month Unsecured Convertible Promissory Notes                                
Class of Stock [Line Items]                                
Conversion price $ 0.675         $ 0.75   $ 0.75     $ 0.75          
Convertible notes, interest rate           7.00%   7.00%     7.00%          
Convertible notes term                     6 months          
Proceeds from issuance of debt                     $ 4,000,000          
Common stock, par value           $ 0.001   $ 0.001     $ 0.001          
Conversion price, discount rate 10.00%                              
Short-Term Convertible Notes | Investor Warrants | 6-Month Unsecured Convertible Promissory Notes                                
Class of Stock [Line Items]                                
Warrants to purchase common shares, shares           1,061,586   1,061,586     1,061,586          
Exercise price of warrants, per share           $ 0.75   $ 0.75     $ 0.75          
Term of warrants                     5 years          
Common stock, par value           $ 0.001   $ 0.001     $ 0.001          
Short-Term Convertible Notes | Common Stock Warrants                                
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       $ 0.001              
2013 Convertible Notes                                
Class of Stock [Line Items]                                
Convertible note, face amount                             $ 6,588,250  
Convertible note, principal amount           $ 50,000   $ 50,000     $ 50,000 $ 1,500,000        
Convertible note maturity start date                 Nov. 30, 2013   Nov. 30, 2013          
Convertible note maturity end date                 Mar. 06, 2016   Mar. 06, 2016          
Accrued but unpaid interest                 $ 1,322     $ 6,351        
Principal amount of notes converted                 $ 50,000   $ 4,221,250          
Common stock issued upon conversion of notes                 68,428     2,087,717        
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   $ 0.75       $ 0.75  
Convertible note, principal amount         $ 50,000 $ 50,000   $ 50,000 $ 50,000   $ 50,000       $ 6,208,250  
Convertible notes, interest rate         5.00% 5.00%   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 | Detachable Common Stock Warrants                                
Class of Stock [Line Items]                                
Common stock warrant term                 2 years              
Warrants to purchase common shares, shares         6,300,000       6,300,000              
Exercise price of warrants, per share         $ 1.00       $ 1.00              
Common stock warrants, extended period                 1 year              
Warrants, exercisable date                 Oct. 01, 2015              
Interest expense associated with extension of warrant expiration                 $ 866,700              
2013 Convertible Notes | Minimum                                
Class of Stock [Line Items]                                
Convertible notes, interest rate                             5.00%  
2013 Convertible Notes | Minimum | Detachable Common Stock Warrants                                
Class of Stock [Line Items]                                
Common stock warrants, Current expiration date                 2015-10              
Common stock warrants, extended expiration date                 2016-10              
2013 Convertible Notes | Maximum                                
Class of Stock [Line Items]                                
Convertible notes, interest rate                             10.00%  
2013 Convertible Notes | Maximum | Detachable Common Stock Warrants                                
Class of Stock [Line Items]                                
Common stock warrants, Current expiration date                 2016-01              
Common stock warrants, extended expiration date                 2017-01              
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        
Accrued but unpaid interest                     $ 4,703          
Principal amount of notes converted                     $ 1,175,000 $ 1,120,000        
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     $ 0.55          
2013 Convertible Notes | Convertible Note at $0.75 per Share | Previously Reported | Detachable Common Stock Warrants                                
Class of Stock [Line Items]                                
Exercise price of warrants, per share           2.00   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     $ 0.75 $ 0.65        
Accrued but unpaid interest                     $ 86,296          
Principal amount of notes converted                     $ 3,046,250 $ 350,000        
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     $ 1.00          
Warrants to purchase shares of common stock           6,310,677   6,310,677     6,310,677          
Term of warrants                     7 months          
2013 Convertible Notes | AVCP Convertible note payable                                
Class of Stock [Line Items]                                
Payments on convertible notes payable                       $ 250,000        
2013 Convertible Notes | Investor                                
Class of Stock [Line Items]                                
Interest on convertible notes payment start date                 Apr. 01, 2013   Apr. 01, 2013          
2013 Convertible Notes | Investor | Convertible Note at $0.75 per Share                                
Class of Stock [Line Items]                                
Common stock warrant term                     2 years          
Warrants to purchase common shares, shares                             8,527,984  
2013 Convertible Notes | Investor | Detachable Common Stock Warrants                                
Class of Stock [Line Items]                                
Common stock warrant term                 2 years              
Warrants to purchase common shares, shares         8,527,984 9,451,056   9,451,056 8,527,984   9,451,056          
Exercise price of warrants, per share                       $ 0.50        
Warrants issued to investors                       923,072        
2013 Convertible Notes | Investor | Minimum | Convertible Note at $0.75 per Share                                
Class of Stock [Line Items]                                
Exercise price of warrants, per share                             $ 0.75  
2013 Convertible Notes | Investor | Minimum | Detachable Common Stock Warrants                                
Class of Stock [Line Items]                                
Common stock warrant term                     2 years          
Exercise price of warrants, per share         $ 0.75 $ 0.50   $ 0.50 $ 0.75   $ 0.50          
2013 Convertible Notes | Investor | Maximum | Convertible Note at $0.75 per Share                                
Class of Stock [Line Items]                                
Exercise price of warrants, per share                             $ 2.00  
2013 Convertible Notes | Investor | Maximum | Detachable Common Stock Warrants                                
Class of Stock [Line Items]                                
Common stock warrant term                     3 years          
Exercise price of warrants, per share         $ 2.00 2.00   2.00 $ 2.00   $ 2.00          
2014 Convertible Bridge Notes                                
Class of Stock [Line Items]                                
Conversion price                       $ 0.65        
Convertible note, face amount                       $ 1,200,000        
Convertible notes, interest rate                       5.00%        
Convertible notes term                       6 months        
Convertible note maturity date                       Oct. 01, 2013        
Conversion Instruments Exercised                       $ 250,000        
2014 Convertible Bridge Notes | Private Equity                                
Class of Stock [Line Items]                                
Principal amount of notes converted                       $ 950,000        
AVCP Convertible Notes                                
Class of Stock [Line Items]                                
Change in fair value of derivative liability                 $ 646,000   $ (838,643)          
AVCP Convertible Notes | Alpha Venture Capital Partners, L.P.                                
Class of Stock [Line Items]                                
Conversion price           $ 0.675   0.675     $ 0.675          
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     $ 0.75          
Increase / Decrease in number of shares of common stock           5,185,185   5,185,185     5,185,185          
Common stock, par value   $ 0.001                            
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     $ 0.9444          
Conversion price           $ 1.00   $ 1.00     $ 1.00          
Convertible note, face amount           $ 1,500,000   $ 1,500,000     $ 1,500,000          
Convertible notes, interest rate           1.20%   1.20%     1.20%          
Convertible note maturity date                 May 05, 2015   May 05, 2015          
Additional convertible promissory notes that may be issued           $ 6,000,000   $ 6,000,000     $ 6,000,000          
Percentage reduction to conversion price                     10.00%          
Convertible note, conversion price description                 To the Company's obligation to pay at least three months' interest on the principal amount. 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   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. | Warrants Expire on December 31, 2019                                
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   Dec. 31, 2019          
AVCP Convertible Notes | Alpha Venture Capital Partners, L.P. | Warrants Exercisable on February 28, 2020                                
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   Feb. 28, 2020          
AVCP Convertible Notes | Alpha Venture Capital Partners, L.P. | Additional 5-year Warrant                                
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 | 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     3,500,000          
AVCP Convertible Notes | Alpha Venture Capital Partners, L.P. | 2-Year Unsecured Convertible Promissory Note                                
Class of Stock [Line Items]                                
Preferred Stock, Share issuance price           $ 0.9444   $ 0.9444     $ 0.9444          
Conversion price           $ 1.00   $ 1.00     $ 1.00          
Convertible note, face amount           $ 2,000,000   $ 2,000,000     $ 2,000,000          
Convertible notes, interest rate           5.00%   5.00%     5.00%          
Common stock warrant term                     2 years          
Convertible note maturity date                     Sep. 26, 2016          
Additional convertible promissory notes that may be issued           $ 6,000,000   $ 6,000,000     $ 6,000,000          
Percentage reduction to conversion price                     10.00%