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Property, Equipment and Software, Net
12 Months Ended
Dec. 31, 2011
Property, Equipment and Software, Net [Abstract]  
Property, Equipment and Software, Net
(5) Property, Equipment and Software, Net

Property, equipment and software, net at December 31, 2011 and 2010 is summarized as follows:

 

 

                 
    2011     2010  

Leasehold improvements

  $ 46,150     $ 35,997  

Furniture and fixtures

    23,666       21,742  

Equipment

    63,303       60,924  

Software

    180,607       152,987  
   

 

 

   

 

 

 
      313,726       271,650  

Less accumulated depreciation and amortization

    (203,124     (174,683
   

 

 

   

 

 

 
    $ 110,602     $ 96,967  
   

 

 

   

 

 

 

Depreciation and amortization expense on property and equipment was $13,384, $12,795 and $15,506 for the years ended December 31, 2011, 2010 and 2009, respectively. Amortization expense on software was $22,182, $20,349 and $16,392 for the years ended December 31, 2011, 2010 and 2009, respectively.