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Long-Term Debt (Schedule of Long-Term Debt) (Details) (USD $)
Nov. 29, 2014
Nov. 30, 2013
Nov. 22, 2013
Debt Instrument [Line Items]      
Long-term debt $ 411,563,000us-gaap_LongTermDebt $ 166,636,000us-gaap_LongTermDebt  
Current portion of long-term debt 233,000us-gaap_LongTermDebtCurrent 50,223,000us-gaap_LongTermDebtCurrent  
Long-term debt, less current portion 411,330,000us-gaap_LongTermDebtNoncurrent 116,413,000us-gaap_LongTermDebtNoncurrent  
Industrial Revenue Bonds [Member]      
Debt Instrument [Line Items]      
Long-term debt 15,820,000us-gaap_LongTermDebt
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_BondsMember		 15,820,000us-gaap_LongTermDebt
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_BondsMember		  
Weighted average interest rate 0.22%us-gaap_DebtWeightedAverageInterestRate
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_BondsMember		 0.23%us-gaap_DebtWeightedAverageInterestRate
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_BondsMember		  
Other long-term debt [Member]      
Debt Instrument [Line Items]      
Long-term debt 743,000us-gaap_LongTermDebt
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_LoansPayableMember		 816,000us-gaap_LongTermDebt
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_LoansPayableMember		  
Revolving Credit Facility [Member]      
Debt Instrument [Line Items]      
Long-term debt 0us-gaap_LongTermDebt
/ us-gaap_CreditFacilityAxis
= us-gaap_RevolvingCreditFacilityMember		 50,000,000us-gaap_LongTermDebt
/ us-gaap_CreditFacilityAxis
= us-gaap_RevolvingCreditFacilityMember		  
Term Loan [Member]      
Debt Instrument [Line Items]      
Long-term debt $ 395,000,000us-gaap_LongTermDebt
/ us-gaap_CreditFacilityAxis
= clc_TermLoanMember		 $ 100,000,000us-gaap_LongTermDebt
/ us-gaap_CreditFacilityAxis
= clc_TermLoanMember		 $ 100,000,000us-gaap_LongTermDebt
/ us-gaap_CreditFacilityAxis
= clc_TermLoanMember