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Income Taxes (Details) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Income Tax Disclosure [Abstract]      
Unrecognized tax benefits $ 3,104us-gaap_UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate $ 3,419us-gaap_UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate $ 3,530us-gaap_UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]      
Balance at January 1: 3,419us-gaap_UnrecognizedTaxBenefits 3,530us-gaap_UnrecognizedTaxBenefits 3,746us-gaap_UnrecognizedTaxBenefits
Additions based on tax positions related to current year 490us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions 516us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions 600us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions
Additions based on tax positions of prior years 0us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions 0us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions 0us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions
Reductions for tax positions of prior years (477)us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions (567)us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions (570)us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions
Settlements (328)us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities (60)us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities (246)us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities
Balance at December 31: 3,104us-gaap_UnrecognizedTaxBenefits 3,419us-gaap_UnrecognizedTaxBenefits 3,530us-gaap_UnrecognizedTaxBenefits
Accrued interest and penalties 1,065us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued 1,220us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued  
Effective Income Tax Rate, Continuing Operations, Tax Rate Reconciliation [Abstract]      
Statutory federal tax rate 35.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate 35.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate 35.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate
State and local income taxes, net of federal benefit 3.50%us-gaap_EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes 3.60%us-gaap_EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes 3.90%us-gaap_EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes
Other, net 1.80%us-gaap_EffectiveIncomeTaxRateReconciliationOtherAdjustments 1.20%us-gaap_EffectiveIncomeTaxRateReconciliationOtherAdjustments 1.60%us-gaap_EffectiveIncomeTaxRateReconciliationOtherAdjustments
Effective tax rate 40.30%us-gaap_EffectiveIncomeTaxRateContinuingOperations 39.80%us-gaap_EffectiveIncomeTaxRateContinuingOperations 40.50%us-gaap_EffectiveIncomeTaxRateContinuingOperations
Income (Loss) from Continuing Operations before Income Taxes, Extraordinary Items, Noncontrolling Interest [Abstract]      
Income before Income Taxes, Domestic 136,656us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic 127,858us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic 133,300us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic
Income before Income Taxes, Foreign 10,155us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign 7,093us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign 12,148us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign
Income before provision for income taxes 146,811us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest 134,951us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest 145,448us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
Provisions for Income Taxes Recorded in the Consolidated Statements of Income [Abstract]      
U.S. Federal, current expense 44,713us-gaap_CurrentFederalTaxExpenseBenefit 47,790us-gaap_CurrentFederalTaxExpenseBenefit 38,642us-gaap_CurrentFederalTaxExpenseBenefit
State, current expense 7,266us-gaap_CurrentStateAndLocalTaxExpenseBenefit 7,066us-gaap_CurrentStateAndLocalTaxExpenseBenefit 6,848us-gaap_CurrentStateAndLocalTaxExpenseBenefit
Foreign, current expense 3,058us-gaap_CurrentForeignTaxExpenseBenefit 2,217us-gaap_CurrentForeignTaxExpenseBenefit 3,366us-gaap_CurrentForeignTaxExpenseBenefit
Total current expense 55,037us-gaap_CurrentIncomeTaxExpenseBenefit 57,073us-gaap_CurrentIncomeTaxExpenseBenefit 48,856us-gaap_CurrentIncomeTaxExpenseBenefit
U.S. Federal, deferred expense 4,049us-gaap_DeferredFederalIncomeTaxExpenseBenefit (2,983)us-gaap_DeferredFederalIncomeTaxExpenseBenefit 9,090us-gaap_DeferredFederalIncomeTaxExpenseBenefit
State, deferred expense 47us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit (458)us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit 786us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit
Foreign, deferred expense (8)us-gaap_DeferredForeignIncomeTaxExpenseBenefit 45us-gaap_DeferredForeignIncomeTaxExpenseBenefit 118us-gaap_DeferredForeignIncomeTaxExpenseBenefit
Total deferred (benefit) expense 4,088us-gaap_DeferredIncomeTaxExpenseBenefit (3,396)us-gaap_DeferredIncomeTaxExpenseBenefit 9,994us-gaap_DeferredIncomeTaxExpenseBenefit
Total income tax provision 59,125us-gaap_IncomeTaxExpenseBenefit 53,677us-gaap_IncomeTaxExpenseBenefit 58,850us-gaap_IncomeTaxExpenseBenefit
Components of Deferred Tax Assets and Liabilities [Abstract]      
Postretirement benefits 29,736us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPostretirementBenefits 29,260us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPostretirementBenefits  
Payroll accruals 2,912us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeCompensation 3,114us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeCompensation  
Bad debt reserves 2,106us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAllowanceForDoubtfulAccounts 2,094us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAllowanceForDoubtfulAccounts  
Other deferred tax assets 8,623us-gaap_DeferredTaxAssetsOther 9,820us-gaap_DeferredTaxAssetsOther  
Pension 42,836us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensions 41,682us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensions  
Inventory 3,351us-gaap_DeferredTaxAssetsInventory 4,597us-gaap_DeferredTaxAssetsInventory  
Subtotal 89,564us-gaap_DeferredTaxAssetsGross 90,567us-gaap_DeferredTaxAssetsGross  
less: valuation allowances (393)us-gaap_DeferredTaxAssetsValuationAllowance (279)us-gaap_DeferredTaxAssetsValuationAllowance  
Deferred tax assets 89,171us-gaap_DeferredTaxAssetsNet 90,288us-gaap_DeferredTaxAssetsNet  
Fixed assets (33,857)us-gaap_DeferredTaxLiabilitiesPropertyPlantAndEquipment (33,988)us-gaap_DeferredTaxLiabilitiesPropertyPlantAndEquipment  
Computer software (3,904)us-gaap_DeferredTaxLiabilitiesDeferredExpenseCapitalizedSoftware (3,775)us-gaap_DeferredTaxLiabilitiesDeferredExpenseCapitalizedSoftware  
Other deferred tax liabilities (1,974)us-gaap_DeferredTaxLiabilitiesOther (1,868)us-gaap_DeferredTaxLiabilitiesOther  
Deferred tax liabilities (39,735)us-gaap_DeferredIncomeTaxLiabilities (39,631)us-gaap_DeferredIncomeTaxLiabilities  
Net deferred tax assets 49,436us-gaap_DeferredTaxAssetsLiabilitiesNet 50,657us-gaap_DeferredTaxAssetsLiabilitiesNet  
Deferred Tax Assets, Net, Classification [Abstract]      
Deferred tax assets, included in other current assets 2,777us-gaap_DeferredTaxAssetsNetCurrent 5,936us-gaap_DeferredTaxAssetsNetCurrent  
Deferred tax assets, included in other non-current assets 47,024us-gaap_DeferredTaxAssetsNetNoncurrent 45,135us-gaap_DeferredTaxAssetsNetNoncurrent  
Deferred tax liabilities included in other current liabilities (365)us-gaap_DeferredTaxLiabilitiesGrossCurrent (414)us-gaap_DeferredTaxLiabilitiesGrossCurrent  
Deferred Tax Assets, Operating Loss Carryforwards, Components [Abstract]      
Foreign net operating losses 363us-gaap_DeferredTaxAssetsOperatingLossCarryforwardsForeign 232us-gaap_DeferredTaxAssetsOperatingLossCarryforwardsForeign  
State net operating losses 759us-gaap_DeferredTaxAssetsOperatingLossCarryforwardsStateAndLocal 1,165us-gaap_DeferredTaxAssetsOperatingLossCarryforwardsStateAndLocal  
Undistributed earnings of non-U.S. subsidiaries $ 66,297us-gaap_UndistributedEarningsOfForeignSubsidiaries $ 59,388us-gaap_UndistributedEarningsOfForeignSubsidiaries