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Leasing Activities
12 Months Ended
Dec. 31, 2011
Leases, Operating [Abstract]  
Operating Leases of Lessor Disclosure [Text Block]
Leasing Activity
Future minimum rents due to us under non-cancelable operating leases at December 31, 2011 are as follows (in thousands):
Year
Amount
2012
$
605,615

2013
568,550

2014
490,939

2015
421,655

2016
353,900

Thereafter
1,116,410

 
$
3,557,069

 
 
In addition to minimum rents, certain leases require reimbursements of specified operating expenses that amounted to $190.8 million, $190.0 million and $191.0 million for the years ended December 31, 2011, 2010 and 2009, respectively.