Annual report pursuant to Section 13 and 15(d)

Properties, net (Details 2)

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Properties, net (Details 2) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2013
Dec. 31, 2012
Properties    
Projects in development or held for future development $ 511,608 $ 565,378
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 245,676 236,324
Projects in development or held for future development | Construction in progress, excluding land
   
Properties    
Projects in development or held for future development $ 265,932 $ 329,054