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PROPERTY AND EQUIPMENT
9 Months Ended
Sep. 30, 2012
PROPERTY AND EQUIPMENT  
PROPERTY AND EQUIPMENT

4. PROPERTY AND EQUIPMENT

        A summary of the Company's property and equipment is as follows (in thousands):

 
  Estimate
Useful Life
  As of
December 31, 2011
  As of
December 31, 2010
 

Building and improvements

  15 - 40 years   $ 18,708   $  

Furniture and equipment

  2 - 10 years     62,224     26,526  

Software

  3 - 5 years       96,010     54,706  

Leasehold improvements

  3 - 10 years     1,458     2,638  

Construction in progress

        15,737     13,626  

Accumulated depreciation

        (41,827 )   (16,440 )
               

Total

      $ 152,310   $ 81,056  
               

        Depreciation and amortization expense related to property and equipment for the years ended December 31, 2011 and 2010, and the six months ended December 31, 2009 and June 30, 2009 was $31.7 million, $12.5 million, $4.0 million and $1.1 million, respectively.