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Financial Instruments (Tables)
 12 Months Ended
Dec. 31, 2013
Investments Debt And Equity Securities [Abstract]  
Available for Sale Securities Held in Investment Portfolio

The following table summarizes the fair value of our cash, cash equivalents and available-for-sale securities held in our investment portfolio:

 

     Amortized
Cost		      Gross
Unrealized
Gains		      Gross
Unrealized
Losses		     Fair Value  

December 31, 2013

           

Cash

    $ 1,355,281       $ —        $ —       $ 1,355,281   

Cash equivalents (money market accounts)

      29,230,143         —          —         29,230,143   
  

 

 

     

 

 

     

 

 

    

 

 

  

Total cash, cash equivalents, and marketable securities

    $ 30,585,424       $ —        $ —       $ 30,585,424   
  

 

 

     

 

 

     

 

 

    

 

 

  

December 31, 2012

           

Cash

    $ 254,267       $ —        $ —       $ 254,267   

Cash equivalents (money market accounts)

      8,217,259         —          (252 )      8,217,007   

Marketable debt securities, current

      13,901,782         —          (1,104 )      13,900,678   
  

 

 

     

 

 

     

 

 

    

 

 

  

Total cash, cash equivalents, and marketable securities

    $ 22,373,308       $ —        $ (1,356 )    $ 22,371,952