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Acquisitions (Schedule Of Supplemental Pro Forma Results) (Details) (USD $)
In Thousands, except Per Share data, unless otherwise specified
12 Months Ended
Dec. 31, 2012
Business Combinations [Abstract]  
Sales $ 946,594us-gaap_BusinessAcquisitionsProFormaRevenue
Income from continuing operations $ 44,816us-gaap_BusinessAcquisitionsProFormaIncomeLossFromContinuingOperationsBeforeChangesInAccountingAndExtraordinaryItemsNetOfTax
Earnings per share from continuing operations:  
Earnings per share from continuing operations, Basic (in usd per share) $ 1.40us-gaap_BusinessAcquisitionProFormaIncomeLossFromContinuingOperationsBeforeChangesInAccountingAndExtraordinaryItemsNetOfTaxPerShareBasic
Earnings per share from continuing operations, Diluted (in usd per share) $ 1.39us-gaap_BusinessAcquisitionProFormaIncomeLossFromContinuingOperationsBeforeChangesInAccountingAndExtraordinaryItemsNetOfTaxPerShareDiluted