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Goodwill and Intangible Assets
6 Months Ended
Jun. 30, 2011
Goodwill and Intangible Assets [Abstract]  
Goodwill and Intangible Assets
5. Goodwill and Intangible Assets
              
 Goodwill activity during the six months ended June 30, 2011 was as follows:
              
   Payer Provider Pharmacy Total
 Balance at December 31, 2010 $ 322,101 $ 502,227 $ 83,982 $ 908,310
 Acquisitions   18,418   -   -   18,418
 Changes in preliminary purchase price allocation   -   (564)   -   (564)
 Balance at June 30, 2011 $ 340,519 $ 501,663 $ 83,982 $ 926,164
          
 Intangible assets subject to amortization as of June 30, 2011 consist of the following:
              
      Gross    
  Weighted Average Carrying Accumulated  
  Remaining Life Amount Amortization Net
 Customer relationships14.4 $ 1,062,113 $ (206,059) $ 856,054
 Trade names14.3   121,678   (23,922)   97,756
 Non-compete agreements3.8   19,656   (12,875)   6,781
 Data sublicense agreement6.6   49,600   (10,056)   39,544
 Backlog0.3   22,120   (15,061)   7,059
 Total  $ 1,275,167 $ (267,973) $ 1,007,194
       
 Amortization expense was $46,301 and $33,153 for the six months ended June 30, 2011 and 2010, respectively.
              
 Aggregate future amortization expense for intangible assets is estimated to be:
              
 2011 (remainder) $ 43,741
 2012   74,462
 2013   73,789
 2014   73,516
 2015   71,896
 Thereafter   669,790
            $ 1,007,194