Quarterly report pursuant to Section 13 or 15(d)

Properties, net (Details 2)

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Properties, net (Details 2) (USD $)
In Thousands, unless otherwise specified
Sep. 30, 2014
Dec. 31, 2013
Properties    
Projects in development or held for future development $ 513,949 $ 511,608
Projects in development or held for future development | Land in development or held for future development
   
Properties    
Projects in development or held for future development 229,286 245,676
Projects in development or held for future development | Construction in progress, excluding land
   
Properties    
Projects in development or held for future development $ 284,663 $ 265,932