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Securities Owned (Tables)
9 Months Ended
Sep. 30, 2012
Securities Owned [Abstract]  
Securities owned
                 
    September 30,
2012
    December 31,
2011
 

Government debt

  $ 32,020     $ 16,007  

Equities

    283       275  
   

 

 

   

 

 

 

Total

  $ 32,303     $ 16,282