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Mortgages, Notes and Margins Payable (Tables)
 6 Months Ended
Jun. 30, 2012
Mortgages, Notes and Margins Payable [Abstract]  
Schedule Of Maturities For Outstanding Mortgage Indebtedness
                         

Maturity Date

         As of
June 30, 2012		     Weighted average annual
interest rate		  

2012

   $         271,482               3.88%          

2013

             1,029,364               4.62%          

2014

             630,018               4.27%          

2015

             590,080               4.97%          

2016

             786,988               5.49%          

Thereafter

             2,770,339               5.72%