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Property and Equipment, Net (Tables)
 9 Months Ended
Sep. 30, 2013
Property Plant And Equipment [Abstract]  
Summary of Property and Equipment, Net

Property and equipment, net consist of the following:

 

     September 30,
2013		     December 31,
2012		  

Land

    $ 18,591      $ 13,294   

Land improvements

      5,176        3,439   

Buildings

      213,703        180,945   

Equipment under capital leases

      5,310        5,310   

Leasehold improvements

      29,306        24,930   

Computer equipment

      62,527        55,734   

Furniture, fixtures and equipment

      31,035        22,124   

Internally developed software

      14,422        11,039   

Other

      1,099        1,099   

Construction in progress

      26,196        12,487   
  

 

 

    

 

 

  
     407,365        330,401   

Less accumulated depreciation and amortization

      (78,942 )      (61,239 ) 
  

 

 

    

 

 

  

Property and equipment, net

    $ 328,423      $ 269,162