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Securities Carried at Fair Value (Tables)
 6 Months Ended
Jun. 30, 2012
Securities Carried at Fair Value [Abstract]  
Securities carried at fair value
                                 
    June 30, 2012     December 31, 2011  
    Cost     Fair Value     Cost     Fair Value  

REIT Preferred shares

   $ —       $ —       $ 2,067     $ 4,277  

REIT Common shares

     26,775       34,079       21,492       24,579  
   

 

 

    

 

 

    

 

 

    

 

 

  
      26,775       34,079       23,559       28,856  

Loan securities

     1,661       5,385       1,661       5,309  
   

 

 

    

 

 

    

 

 

    

 

 

  
    $ 28,436     $ 39,464     $ 25,220     $ 34,165