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Business Acquisitions, Investments and Noncontrolling Interests Business Acquisitions, Investments and Noncontrolling Interests - Redeemable Non-controlling Interest (Details) (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 6 Months Ended
May 30, 2015
May 31, 2014
May 30, 2015
May 31, 2014
Increase (Decrease) in Stockholders Equity and Temporary Equity [Roll Forward]        
Noncontrolling interests at beginning of period     $ 1,587us-gaap_RedeemableNoncontrollingInterestEquityCarryingAmount  
Net (earnings) loss attributable to noncontrolling interests 76us-gaap_NetIncomeLossAttributableToNoncontrollingInterest (6)us-gaap_NetIncomeLossAttributableToNoncontrollingInterest 104us-gaap_NetIncomeLossAttributableToNoncontrollingInterest 14us-gaap_NetIncomeLossAttributableToNoncontrollingInterest
Acquisition of noncontrolling interest     (1,239)us-gaap_PaymentsToMinorityShareholders 0us-gaap_PaymentsToMinorityShareholders
Redeemable Noncontrolling Interest, Equity, Carrying Amount 0us-gaap_RedeemableNoncontrollingInterestEquityCarryingAmount   0us-gaap_RedeemableNoncontrollingInterestEquityCarryingAmount  
Redeemable noncontrolling interests [Member]        
Increase (Decrease) in Stockholders Equity and Temporary Equity [Roll Forward]        
Noncontrolling interests at beginning of period     1,587us-gaap_RedeemableNoncontrollingInterestEquityCarryingAmount
/ clc_StatementEquityComponentsAndTemporaryEquityAxis
= clc_RedeemableNoncontrollingInterestsMember
1,836us-gaap_RedeemableNoncontrollingInterestEquityCarryingAmount
/ clc_StatementEquityComponentsAndTemporaryEquityAxis
= clc_RedeemableNoncontrollingInterestsMember
Net (earnings) loss attributable to noncontrolling interests     (19)us-gaap_NetIncomeLossAttributableToNoncontrollingInterest
/ clc_StatementEquityComponentsAndTemporaryEquityAxis
= clc_RedeemableNoncontrollingInterestsMember
(101)us-gaap_NetIncomeLossAttributableToNoncontrollingInterest
/ clc_StatementEquityComponentsAndTemporaryEquityAxis
= clc_RedeemableNoncontrollingInterestsMember
Acquisition of noncontrolling interest     (1,432)us-gaap_PaymentsToMinorityShareholders
/ clc_StatementEquityComponentsAndTemporaryEquityAxis
= clc_RedeemableNoncontrollingInterestsMember
0us-gaap_PaymentsToMinorityShareholders
/ clc_StatementEquityComponentsAndTemporaryEquityAxis
= clc_RedeemableNoncontrollingInterestsMember
Foreign currency translation     (136)us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToNoncontrollingInterest
/ clc_StatementEquityComponentsAndTemporaryEquityAxis
= clc_RedeemableNoncontrollingInterestsMember
(5)us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToNoncontrollingInterest
/ clc_StatementEquityComponentsAndTemporaryEquityAxis
= clc_RedeemableNoncontrollingInterestsMember
Dividend     0us-gaap_MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders
/ clc_StatementEquityComponentsAndTemporaryEquityAxis
= clc_RedeemableNoncontrollingInterestsMember
0us-gaap_MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders
/ clc_StatementEquityComponentsAndTemporaryEquityAxis
= clc_RedeemableNoncontrollingInterestsMember
Redeemable Noncontrolling Interest, Equity, Carrying Amount 0us-gaap_RedeemableNoncontrollingInterestEquityCarryingAmount
/ clc_StatementEquityComponentsAndTemporaryEquityAxis
= clc_RedeemableNoncontrollingInterestsMember
1,730us-gaap_RedeemableNoncontrollingInterestEquityCarryingAmount
/ clc_StatementEquityComponentsAndTemporaryEquityAxis
= clc_RedeemableNoncontrollingInterestsMember
0us-gaap_RedeemableNoncontrollingInterestEquityCarryingAmount
/ clc_StatementEquityComponentsAndTemporaryEquityAxis
= clc_RedeemableNoncontrollingInterestsMember
1,730us-gaap_RedeemableNoncontrollingInterestEquityCarryingAmount
/ clc_StatementEquityComponentsAndTemporaryEquityAxis
= clc_RedeemableNoncontrollingInterestsMember
Non-redeemable noncontrolling interests [Member]        
Increase (Decrease) in Stockholders Equity and Temporary Equity [Roll Forward]        
Noncontrolling interests at beginning of period     1,043us-gaap_RedeemableNoncontrollingInterestEquityCarryingAmount
/ clc_StatementEquityComponentsAndTemporaryEquityAxis
= us-gaap_NoncontrollingInterestMember
1,025us-gaap_RedeemableNoncontrollingInterestEquityCarryingAmount
/ clc_StatementEquityComponentsAndTemporaryEquityAxis
= us-gaap_NoncontrollingInterestMember
Net (earnings) loss attributable to noncontrolling interests     123us-gaap_NetIncomeLossAttributableToNoncontrollingInterest
/ clc_StatementEquityComponentsAndTemporaryEquityAxis
= us-gaap_NoncontrollingInterestMember
115us-gaap_NetIncomeLossAttributableToNoncontrollingInterest
/ clc_StatementEquityComponentsAndTemporaryEquityAxis
= us-gaap_NoncontrollingInterestMember
Acquisition of noncontrolling interest     0us-gaap_PaymentsToMinorityShareholders
/ clc_StatementEquityComponentsAndTemporaryEquityAxis
= us-gaap_NoncontrollingInterestMember
0us-gaap_PaymentsToMinorityShareholders
/ clc_StatementEquityComponentsAndTemporaryEquityAxis
= us-gaap_NoncontrollingInterestMember
Foreign currency translation     (105)us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToNoncontrollingInterest
/ clc_StatementEquityComponentsAndTemporaryEquityAxis
= us-gaap_NoncontrollingInterestMember
18us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToNoncontrollingInterest
/ clc_StatementEquityComponentsAndTemporaryEquityAxis
= us-gaap_NoncontrollingInterestMember
Dividend     (206)us-gaap_MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders
/ clc_StatementEquityComponentsAndTemporaryEquityAxis
= us-gaap_NoncontrollingInterestMember
(166)us-gaap_MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders
/ clc_StatementEquityComponentsAndTemporaryEquityAxis
= us-gaap_NoncontrollingInterestMember
Redeemable Noncontrolling Interest, Equity, Carrying Amount $ 855us-gaap_RedeemableNoncontrollingInterestEquityCarryingAmount
/ clc_StatementEquityComponentsAndTemporaryEquityAxis
= us-gaap_NoncontrollingInterestMember
$ 992us-gaap_RedeemableNoncontrollingInterestEquityCarryingAmount
/ clc_StatementEquityComponentsAndTemporaryEquityAxis
= us-gaap_NoncontrollingInterestMember
$ 855us-gaap_RedeemableNoncontrollingInterestEquityCarryingAmount
/ clc_StatementEquityComponentsAndTemporaryEquityAxis
= us-gaap_NoncontrollingInterestMember
$ 992us-gaap_RedeemableNoncontrollingInterestEquityCarryingAmount
/ clc_StatementEquityComponentsAndTemporaryEquityAxis
= us-gaap_NoncontrollingInterestMember