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Deposits - Restricted (Tables)
6 Months Ended
Jun. 30, 2011
Deposits - Restricted [Abstract]  
Schedule of Restricted Deposits
                 
    June 30,     December 31,  
    2011     2010  
Tax—deferred (1031) exchange proceeds
  $ 278,903     $ 103,887  
Earnest money on pending acquisitions
    5,400       9,264  
Restricted deposits on debt
    30,629       18,966  
Resident security and utility deposits
    40,801       40,745  
Other
    6,098       8,125  
 
               
 
           
Totals
  $ 361,831     $ 180,987