v3.5.0.2

Contingencies (Details) - TransWeb [Member] $ in Thousands	Mar. 07, 2016 USD ($)	Apr. 21, 2014 USD ($) Juror
Loss Contingencies [Line Items]
Number of jurors | Juror		6
Gain contingency not yet recognized		$ 26,147
Settled Litigation [Member]
Loss Contingencies [Line Items]
Gain contingency not yet recognized	$ 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 judgment or settlement awarded to (against) the entity in respect of litigation.

+ References

No definition available.

+ Details

Name:	us-gaap_LitigationSettlementAmount
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

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

X

- Details

Name:	dei_LegalEntityAxis=clc_TranswebMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_LitigationStatusAxis=us-gaap_SettledLitigationMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: