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Goodwill (Tables)
9 Months Ended
Sep. 30, 2012
Goodwill [Abstract]  
Changes in the carrying amount of goodwill
         

Balance as of December 31, 2011

  $  82,644  

Jingle acquisition

    (53

Other

    (28
   

 

 

 

Balance as of September 30, 2012

  $ 82,563