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Property and Equipment (Tables)
6 Months Ended
Jun. 30, 2012
Property and Equipment [Abstract]  
Property and equipment
                 
    June 30,     December 31,  
    2012     2011  

Land and land improvements

  $ 234,307     $ 217,811  

Buildings

    2,288,767       2,272,381  

Furniture, fixtures and equipment

    552,468       533,396  

Construction in progress

    48,982       59,822  
   

 

 

   

 

 

 
      3,124,524       3,083,410  

Accumulated depreciation

    (923,908     (874,283
   

 

 

   

 

 

 

Property and equipment, net

  $ 2,200,616     $ 2,209,127