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Property and Equipment
12 Months Ended
Dec. 31, 2011
Property and Equipment [Abstract]  
Property and Equipment

5. Property and Equipment

Property and equipment consist of the following:

 

 

      September 30,       September 30,  
    As of December 31,  
    2011     2010  

Land

  $ 9,504     $ 8,282  

Land improvements

    1,688       1,597  

Buildings

    118,445       48,323  

Equipment under capital leases

    5,310       4,502  

Leasehold improvements

    17,305       11,407  

Computer equipment

    46,993       36,742  

Furniture, fixtures and equipment

    13,366       11,401  

Internally developed software

    7,108       3,825  

Other

    1,098       998  

Construction in progress

    9,590       21,349  
   

 

 

   

 

 

 
      230,407       148,426  

Less accumulated depreciation and amortization

    (40,460     (24,427
   

 

 

   

 

 

 

Property and equipment, net

  $ 189,947     $ 123,999  
   

 

 

   

 

 

 

Depreciation and amortization expense associated with property and equipment, including assets under capital lease, totaled $16,339, $11,376, and $7,228 for the years ended December 31, 2011, 2010, and 2009, respectively.