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Property:
12 Months Ended
Dec. 31, 2011
Property:  
Property:

6. Property:

        Property at December 31, 2011 and 2010 consists of the following:

 
  2011   2010  

Land

  $ 1,273,649   $ 1,158,139  

Building improvements

    5,440,394     4,934,391  

Tenant improvements

    442,862     398,556  

Equipment and furnishings

    123,098     124,530  

Construction in progress

    209,732     292,891  
           

 

    7,489,735     6,908,507  

Less accumulated depreciation

    (1,410,692 )   (1,234,380 )
           

 

  $ 6,079,043   $ 5,674,127  
           

        Depreciation expense for the years ended December 31, 2011, 2010 and 2009 was $220,392, $201,452 and $215,831, respectively.

        The Company recognized a (loss) gain on the sale of assets of ($423), $497 and $5,275 for the years ended December 31, 2011, 2010 and 2009, respectively.

        During the year ended December 31, 2011, the Company recognized a gain of $1,734 on the purchase of Superstition Springs Land (See Note 16—Acquisitions) in connection with the GGP Exchange (See Note 4—Investments in Unconsolidated Joint Ventures) and a gain of $1,868 on the purchase of a 50% interest in Desert Sky Mall (See Note 16—Acquisitions).

        During the year ended December 31, 2011, the Company also recorded a loss on impairment of $45,458 due to the reduction in the estimated holding period of certain long-lived assets.

        During the year ended December 31, 2009, the Company recorded a gain of $154,156 on the sale of a 49% interest in Queens Center and a gain of $2,506 on the sale of a 75% interest in FlatIron Crossing. (See Note 4—Investments in Unconsolidated Joint Ventures.)