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Property and Equipment
12 Months Ended
Dec. 31, 2012
Property and Equipment [Abstract]  
Property and Equipment
 
3.
Property and Equipment
 
The composition of property and equipment as of December 31, 2011 and 2012 is as follows (in thousands):
 
   
2011
   
2012
   
Estimated useful  life (years)
 
Land
  $ 7,138     $ 7,138        
Buildings and improvements
    17,995       18,188       5-40  
Furniture, equipment, and computer hardware and software
    146,523       153,597       5-10  
Leasehold improvements
    33,692       38,362       3-10  
Construction in progress
    843       670        
      206,191       217,955          
Accumulated depreciation and amortization
    (85,042 )     (96,435 )        
    $ 121,149     $ 121,520          
 
Construction in progress includes costs associated with the construction of new campuses and the development of information technology applications. In 2011 and 2012, the Company recorded leasehold improvements of $2.0 million and $1.1 million, respectively, which were reimbursed by lessors as lease incentives. In 2011 and 2012, the Company wrote off $10.9 million and $12.5 million, respectively, in fixed assets that were fully depreciated and no longer in service.