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Stock-based Compensation (Tables)
 12 Months Ended
Dec. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Schedule of Option and Warrant Activity
The following table summarizes option and warrant activity during the years ended December 31, 2013 and 2012.

 
   
Options
and
Warrants
Outstanding
    
Weighted
Average
Exercise
Price
  
             
Outstanding at December 31, 2011
     20,440,551     $ 1.10  
Options granted
     50,000       0.37  
Warrants issued
     24,817,900       0.33  
Expired
     (252,669 )     1.31  
Forfeited
     (1,658,919 )     1.31  
Exercised
     --       --  
                 
Outstanding at December 31, 2012
     43,396,863     $ 0.54  
Options granted
     --       --  
Warrants issued
     850,000       0.25  
Expired
     (643,094 )     0.55  
Forfeited
     (535,633 )     1.42  
Exercised
     --       --  
                 
Outstanding at December 31, 2013
     43,068,136     $ 0.47  

Schedule of Information About Stock Options and Warrants
The following table summarizes information about stock options and warrants outstanding at December 31, 2013.
 
       
Outstanding
    
Exercisable
  
             
Weighted
Average
Remaining
    
Weighted
Average
          
Weighted
Average
  
   
Range of
Exercise Prices
  
Number
Outstanding
    
Contractual
Life (years)
    
Exercise
Price
    
Number
Exercisable
    
Exercise
Price
  
  $ 0.17-0.95     40,024,414       3.34     $ 0.42       39,941,081     $ 0.42  
   
1.00-1.59
     2,709,222       2.69       1.04       2,694,555       1.04  
   
2.25-4.00
     334,500       1.94       2.52       334,500       2.52  
  $ 0.17-4.00     43,068,136       3.29     $ 0.48       42,970,136     $ 0.47  

Schedule of Restricted Stock Unit Activity
The following is a summary of restricted stock unit activity for the years ended December 31, 2013 and 2012:
 
   
Restricted
Stock Units
    
Weighted
Average
Grant
Date Fair
Value
  
             
Outstanding at December 31, 2011
     2,550,000       1.25  
Awarded at fair value
     390,133       0.17  
Canceled/Forfeited
     --       --  
Settled by issuance of stock
     --       --  
Outstanding at December 31, 2012
     2,940,133     $ 1.11  
Awarded at fair value
     686,667       0.08  
Canceled/Forfeited
     (275,000 )     1.36  
Settled by issuance of stock
     (258,553 )     0.82  
Outstanding at December 31, 2013
     3,093,247     $ 0.88  
Vested at December 31, 2013
     3,093,247     $ 0.88  

Schedule of Allocated Stock-based Compensation
The impact on our results of operations for recording stock-based compensation for the years ended December 31, 2013 and 2012 is as follows:

   
For the years ended
  
   
December 31,
  
   
2013
    
2012
  
             
General and administrative
   $ 25,388     $ 185,478  
Research and development
     --       98,214  
                 
Total
   $ 25,388     $ 283,692  

Stock Options [Member]
  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Schedule of Assumptions Used to Value Awards
The fair values for the options granted in 2012 were estimated at the date of grant using the Black Scholes option-pricing model with the following weighted average assumptions:
 
 
Year Ended
December 31,2012
Risk free interest rate
1.65%
Expected life (in years)
10.0
Expected volatility
78.97%
Expected dividend yield
0.00%

Warrant [Member]
  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Schedule of Assumptions Used to Value Awards
The fair values for the warrants granted in 2013 and 2012 were estimated at the date of grant using the Black Scholes option-pricing model with the following weighted average assumptions:
 
   
Year Ended December 31,
  
   
2013
    
2012
  
Risk free interest rate
   0.65%     1.16%  
Expected life (in years)
   4.42     5.7  
Expected volatility
   90.68%     82.79%  
Expected dividend yield
   0.00%     0.00%