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Income Taxes (Schedule Of Activities Related To Unrecognized Tax Benefits For Uncertain Tax Positions) (Details) (USD $)
In Thousands
9 Months Ended
Sep. 30, 2011
Income Taxes [Abstract] 
Opening balance at January 1, 2011$ 20,016
Increase related to prior year tax positions, including recorded against Goodwill2,110
Increase related to current year tax positions, including recorded against Goodwill2,319
Decrease related to prior year tax positions(150)
Effect of exchange rate changes(592)
Closing balance at September 30, 2011$ 23,703