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Income Taxes (Narrative) (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Nov. 29, 2014
Nov. 30, 2013
Dec. 01, 2012
May 01, 2014
Operating Loss Carryforwards [Line Items]        
Unrecognized tax benefits that would impact the effective tax rate if recognized $ 1,555us-gaap_UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate $ 1,354us-gaap_UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate    
Accrued for the payment of interest and penalties 273us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued 221us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued    
Significant change in unrecognized tax benefits is reasonably possible, amount of unrecorded benefit 253us-gaap_SignificantChangeInUnrecognizedTaxBenefitsIsReasonablyPossibleAmountOfUnrecordedBenefit      
Operating loss carryforwards, limitations on use 20,000clc_OperatingLossCarryforwardsLimitationsOnUseAmount      
Tax credit carryforward 33,833us-gaap_DeferredTaxAssetsOperatingLossCarryforwardsDomestic      
Operating loss carryforwards, subject to expiration 1,319us-gaap_DeferredTaxAssetsOperatingLossCarryforwardsSubjectToExpiration      
Operating loss carryforwards, not subject to expiration 4,748us-gaap_DeferredTaxAssetsOperatingLossCarryforwardsNotSubjectToExpiration      
Valuation allowance, deferred tax asset, change in amount 166us-gaap_ValuationAllowanceDeferredTaxAssetChangeInAmount (809)us-gaap_ValuationAllowanceDeferredTaxAssetChangeInAmount    
Repatriated foreign earnings 17clc_RepatriatedForeignEarnings 54clc_RepatriatedForeignEarnings 54clc_RepatriatedForeignEarnings  
Undistributed foreign earnings 203,656clc_UndistributedForeignEarnings      
Stanadyne [Member]        
Operating Loss Carryforwards [Line Items]        
General business tax carryforward       1,700us-gaap_DeferredTaxAssetsTaxCreditCarryforwardsGeneralBusiness
/ us-gaap_BusinessAcquisitionAxis
= clc_StanadyneMember
Federal [Member]        
Operating Loss Carryforwards [Line Items]        
Operating loss carryforwards $ 45,500us-gaap_OperatingLossCarryforwards
/ us-gaap_IncomeTaxAuthorityAxis
= us-gaap_DomesticCountryMember