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Summary Of Significant Accounting Policies (Tables)
12 Months Ended
Dec. 31, 2011
Summary Of Significant Accounting Policies [Abstract]  
Impact Of Change In Statement Of Cash Flows Presentation To Prior Periods
     Year Ended December 31, 2010      Year Ended December 31, 2009  
     As  Previously
Reported
     As Adjusted      Impact      As  Previously
Reported
     As Adjusted      Impact  

Unrealized foreign currency losses, net

   $ —           $ 1,963         $ 1,963         $ —          $ 2,282         $ 2,282     

Changes in operating assets and liabilities, net of effects of acquisitions

     11,840            12,246           406           19,535           21,639           2,104     
        

 

 

          

 

 

 

Net cash provided by operating activities

     185,309            187,678           2,369           153,286           157,672            4,386     

Effect of exchange rate changes in cash and cash equivalents

     910            (1,459)           (2,369)           (2,451)           (6,837)           (4,386)   
        

 

 

          

 

 

 

Net impact to cash and cash equivalents

      $ —               $
Summary Of Other Assets
Property, Plant, And Equipment Estimated Useful Lives
      Years   

Building

     30   

Furniture and fixtures

     7   

Machinery and equipment

     7   

Computer equipment

     3-5   

Computer software

     3-7   
Reconciliation Of Denominator Of Net Income Per Share