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Shareholders' Equity (Schedule Of Accumulated Balances Related To Other Comprehensive Income (Loss)) (Details) (USD $)
In Thousands
9 Months Ended12 Months Ended
Sep. 30, 2011
Dec. 31, 2010
Shareholders' Equity [Abstract]  
Foreign currency translation adjustments: Mexico $ 51
Fair value of derivatives, net of income taxes of $2,086 in 2011 and 2010(1,433)(1,570)
Accumulated other comprehensive income (loss), net of tax, total(1,433)(1,519)
Fair value of derivative, income tax$ 2,086$ 2,086