v3.6.0.2

Contingencies (Details) $ in Thousands			12 Months Ended
	Mar. 07, 2016 USD ($)	Apr. 21, 2014 USD ($)	Dec. 01, 2012 Juror
Loss Contingencies [Line Items]
Number of jurors | Juror			6
TransWeb [Member]
Loss Contingencies [Line Items]
Litigation settlement		$ 26,147
Gain (loss) on legal settlement	$ 27,250

X

- Definition

Loss Contingency, Number of Jurors

+ References

No definition available.

+ Details

Name:	clc_LossContingencyNumberofJurors
Namespace Prefix:	clc_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Amount of gain (loss) recognized in settlement of litigation and insurance claims. Excludes claims within an insurance entity's normal claims settlement process.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14326-108349

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Amount of judgment or settlement awarded to (against) the entity in respect of litigation.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: