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Commitments and Contingencies (Tables)
6 Months Ended
Jun. 30, 2011
Commitments and Contingencies (Tables) [Abstract]  
Operating Leases Future Minimum Payments Due
                 
2011 (six months remaining)
      $ 909  
2012
            1,818  
2013
            1,818  
2014
            1,909  
2015
            1,909  
Thereafter
            289,897