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Organization and Basis of Presentation (Tables)
3 Months Ended
Mar. 31, 2013
Organization and Basis of Presentation [Abstract]  
Schedule of future aggregate principle payments
         

Year ended December 31,

       
   

2013 (remaining nine months)

  $ 0  

2014

    1,450  

2015

    2,374  

2016

    2,176  
   

 

 

 
    $ 6,000