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Income Taxes (Tables)
9 Months Ended
Sep. 30, 2011
Income Taxes [Abstract] 
Schedule Of Activity Related To Gross Unrecognized Tax Benefits
     Nine Months  Ended
September 30, 2010
 

Balance at December 31, 2009

   $ 49,416   

Increases related to prior year tax positions

     374   

Decreases related to prior year tax positions

     (9,569

Increases related to current year tax positions

     1,696   

Settlements

     (605
  

 

 

 

Balance at September 30, 2010

   $ 41,312