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Property and Equipment (Tables)
3 Months Ended
Mar. 31, 2012
Property and Equipment [Abstract]  
Property and equipment
                 
    March 31,
2012
    December 31,
2011
 

Land and land improvements

  $ 218,805     $ 217,811  

Buildings

    2,279,585       2,272,381  

Furniture, fixtures and equipment

    545,297       533,396  

Construction in progress

    63,532       59,822  
   

 

 

   

 

 

 
      3,107,219       3,083,410  

Accumulated depreciation

    (901,558     (874,283
   

 

 

   

 

 

 

Property and equipment, net

  $ 2,205,661     $ 2,209,127