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Property and Equipment (Tables)
 3 Months Ended
Mar. 31, 2016
Property, Plant and Equipment [Abstract]  
Summary of Property and Equipment

Property and equipment consist of the following:

 

     March 31, 2016      December 31, 2015  

Land

    $ 113,932       $ 103,280   

Land improvements

      20,472         13,389   

Buildings

      396,670         392,754   

Buildings and leasehold improvements

      75,232         72,494   

Equipment under capital leases

      5,943         6,467   

Computer equipment

      92,843         91,225   

Furniture, fixtures and equipment

      52,158         51,352   

Internally developed software

      25,513         25,996   

Other

      1,175         1,099   

Construction in progress

      94,565         54,506   
  

 

 

     

 

 

  
     878,503         812,562   

Less accumulated depreciation and amortization

      (153,412 )       (145,079 ) 
  

 

 

     

 

 

  

Property and equipment, net

    $ 725,091       $ 667,483