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Acquisitions (Tables)
 12 Months Ended
Dec. 31, 2011
Acquisitions [Abstract]  
Summary Of Fair Value Of Separately Identifiable Intangible Assets On Acquisition
                 
     Intangible Assets  
     Fair Value      Amortization Period  

Renewal rights

    $ 38,000         15 years   

Trademarks

      7,400         15 years   

Internally developed software

      1,600         3 years   

Non-compete covenants

      1,200         2 years   

Insurance licenses

      8,000         N/A   
    

 

 

           
     $ 56,200