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Incentive Plans and Stock-Based Compensation - Stock Options Fair Value Assumptions (Details) (Employee and Non-Employee Stock Options [Member], USD $)
6 Months Ended
May 30, 2015
May 31, 2014
Employee and Non-Employee Stock Options [Member]
   
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Weighted average fair value per option at the date of grant for options granted $ 10.26us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
/ us-gaap_AwardTypeAxis
= clc_EmployeeandNonEmployeeStockOptionsMember
$ 11.50us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
/ us-gaap_AwardTypeAxis
= clc_EmployeeandNonEmployeeStockOptionsMember
Risk-free interest rate 1.31%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate
/ us-gaap_AwardTypeAxis
= clc_EmployeeandNonEmployeeStockOptionsMember
1.55%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate
/ us-gaap_AwardTypeAxis
= clc_EmployeeandNonEmployeeStockOptionsMember
Expected dividend yield 1.27%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate
/ us-gaap_AwardTypeAxis
= clc_EmployeeandNonEmployeeStockOptionsMember
1.10%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate
/ us-gaap_AwardTypeAxis
= clc_EmployeeandNonEmployeeStockOptionsMember
Expected volatility factor 19.50%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate
/ us-gaap_AwardTypeAxis
= clc_EmployeeandNonEmployeeStockOptionsMember
21.38%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate
/ us-gaap_AwardTypeAxis
= clc_EmployeeandNonEmployeeStockOptionsMember
Expected option term in years 5 years 0 months 0 days 5 years 0 months 0 days