Commitments and Contingencies (Tables)
 9 Months Ended
Sep. 30, 2012
Commitments and Contingencies [Abstract]  
Schedule of Contract commitments
         

Year ending December 31:

      

2012 (remaining three months)

   $ 1,476  

2013

     4,648  

2014

     1,419  

2015

     1,080  

2016

     1,080  

Due after 5 years

     360  
   

 

 

  

Total contract commitments

   $ 10,063