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Share-based Compensation - Additional Information (Detail) (USD $)
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Share-Based Compensation [Line Items]    
Granted during the period $ 0.54 $ 0.72
Other general and administrative expense $ 529,500 $ 445,900
Expected volatility rate 45.00% 71.00%
Risk-free interest rate 0.30% 0.11%
Expected life, in years 1 year 8 months 12 days 10 months
Maximum
   
Share-Based Compensation [Line Items]    
Common Stock Capital Shares Reserved For Future Issuance 5,000,000  
Minimum
   
Share-Based Compensation [Line Items]    
Common Stock Capital Shares Reserved For Future Issuance 2,000,000  
Warrant
   
Share-Based Compensation [Line Items]    
Change in fair value of derivative   157,800
Convertible Promissory Notes Warrants
   
Share-Based Compensation [Line Items]    
Share-based compensation arrangement by share-based payment award, equity instruments other than options, grants in period, weighted average grant date fair value $ 0.60  
Fair value of warrants for 8% convertible promissory notes 334,100 443,300
Share-Based Compensation Arrangement By Share-Based Payment Award, Equity Instruments Other Than Options, Grants In Period 14,875,004 17,820,470
Initial Hiring
   
Share-Based Compensation [Line Items]    
Share based compensation arrangement by share-based payment award, options, grants in period, gross 3,085,000 300,000
Granted during the period $ 0.54 $ 0.72
Convertible Debenture Bonus Warrants
   
Share-Based Compensation [Line Items]    
Share-based compensation arrangement by share-based payment award, equity instruments other than options, grants in period, weighted average grant date fair value   $ 0.60
Sharebased compensation arrangement by share based payment award options amortized expenses remaining amount   57,000
Share-Based Compensation Arrangement By Share-Based Payment Award, Equity Instruments Other Than Options, Grants In Period   166,675
Consultant Warrants
   
Share-Based Compensation [Line Items]    
Share-based compensation arrangement by share-based payment award, equity instruments other than options, grants in period, weighted average grant date fair value   $ 0.82
Fair value of warrants for 8% convertible promissory notes   78,600
Granted during the period   $ 300,000
Consultant Warrants | Maximum
   
Share-Based Compensation [Line Items]    
Expected volatility rate   118.00%
Risk-free interest rate   0.60%
Expected life, in years   5 years
Consultant Warrants | Minimum
   
Share-Based Compensation [Line Items]    
Expected volatility rate   100.00%
Risk-free interest rate   0.40%
Expected life, in years   3 years
Convertible Preferred Stock Warrants
   
Share-Based Compensation [Line Items]    
Share-based compensation arrangement by share-based payment award, equity instruments other than options, grants in period, weighted average grant date fair value   $ 1.00
Fair value of warrants for 8% convertible promissory notes   2,400,000
Granted during the period   $ 3,761,365
Expected volatility rate   110.00%
Risk-free interest rate   0.60%
Expected life, in years   51 months
Derivative liability of warrants   $ 1,800,000