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

Subsequent Events - Additional Information (Detail)

v2.4.0.8
Subsequent Events - Additional Information (Detail) (USD $)
6 Months Ended 12 Months Ended 0 Months Ended 1 Months Ended
Nov. 30, 2013
May 31, 2013
May 31, 2012
May 31, 2010
May 31, 2013
Minimum
Nov. 30, 2013
Convertible Debt
May 31, 2013
Convertible Debt
Jan. 03, 2014
Subsequent Event
Dec. 04, 2013
Subsequent Event
Installment
Dec. 23, 2013
Subsequent Event
Dec. 31, 2013
Subsequent Event
Aug. 30, 2013
Subsequent Event
Convertible Debt
Jul. 31, 2013
Subsequent Event
Unsecured Convertible Promissory Notes
Jul. 31, 2013
Subsequent Event
Unsecured Convertible Promissory Notes
Sale of Note Payable
Jul. 31, 2013
Subsequent Event
Unsecured Convertible Promissory Notes
If Converted
Jul. 31, 2013
Subsequent Event
Unsecured Convertible Promissory Notes
Minimum
Subsequent Event [Line Items]                                
Issuance of promissory notes                         $ 1,200,000      
Interest rate on notes         5.00%               5.00%      
Maturity date                         Feb. 01, 2014      
Proceeds from sale of securities                         3,000,000      
Convertible note conversion price Trigger per share                         $ 0.65      
Conversion price decrease per share                         $ 0.10      
Convertible note conversion price per share         $ 0.65     $ 0.65       $ 0.75       $ 0.35
Warrant exercise period                         3 years      
Warrants issued to purchase common stock                     80,000   923,072      
Common stock warrant exercise price 0.75                   0.75     0.50 0.75  
Value Of Warrants                         1.30      
Class of warrant term                         5 years      
Cash fee paid to a registered broker-dealer                         120,000      
Principal amount of notes 7,221,250 6,588,250       4,621,250 6,021,250         920,000        
Aggregate principal amount plus accrued but unpaid interest 2,350,000 567,000   146,456       100,000       12,071        
Common stock issued               157,154       1,242,762        
Stock options , shares granted 17,848,540 11,166,274 3,456,088           50,000              
Stock options, exercise price                 $ 1.09              
Stock option, vesting installments                 3              
Stock option , expire period                 5 years              
Exercisable warrants, expire period 5 years                   5 years          
Percentage of deposit payment to consulting firm                   20.00%            
Consulting fee                   789,917            
Aggregate principal amount plus accrued but unpaid interest               $ 2,151