Quarterly report pursuant to Section 13 or 15(d)

Properties, net (Details)

 v2.3.0.11
Properties, net (Details) (USD $)
In Thousands
Jun. 30, 2011
Dec. 31, 2010
Properties    
Operating properties, net $ 2,741,433 $ 2,802,773
Operating properties
   
Properties    
Less: accumulated depreciation (527,616) (503,032)
Operating properties | Land, operating properties
   
Properties    
Gross 491,188 501,210
Operating properties | Buildings and improvements
   
Properties    
Gross $ 2,777,861 $ 2,804,595