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

Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 50

-Paragraph 1

-Subparagraph (a)(3)

-URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16265-109275

+ Details

Name:	us-gaap_AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of increase in assets, excluding financial assets, lacking physical substance with a definite life, resulting from a business combination.

+ References

No definition available.

+ Details

Name:	us-gaap_FinitelivedIntangibleAssetsAcquired1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The amortization method of a major finite-lived intangible asset class. A major class is composed of intangible assets that can be grouped together because they are similar either by their nature or by their use in the operations of a company. The straight-line method is the preferred amortization method, unless another method better reflects the pattern in which the asset is consumed.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 35

-Paragraph 6

-URI http://asc.fasb.org/extlink&oid=26713198&loc=d3e15372-109273

+ Details

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

- Definition

Amount of increase in assets, excluding financial assets and goodwill, lacking physical substance with an indefinite life, resulting from a business combination.

+ References

No definition available.

+ Details

Name:	us-gaap_IndefinitelivedIntangibleAssetsAcquired
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Details

Name:	us-gaap_BusinessAcquisitionAxis=clc_AirFiltrationsSegmentofGeneralElectricMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_BusinessAcquisitionAxis=clc_FilterResourcesInc.Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_BusinessAcquisitionAxis=clc_StanadyneMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis=us-gaap_TrademarksMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis=us-gaap_TradeNamesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Business Acquisitions, Investments and Noncontrolling Interests - Acquired Intangibles (Details) (USD $) In Thousands, unless otherwise specified	0 Months Ended
	Dec. 17, 2014	May 01, 2014	Dec. 16, 2013
Filter Resources, Inc. [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Estimated value	$ 10,880
Filter Resources, Inc. [Member] \| Trademarks [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Estimated value	80
Weighted average Useful life	1 year
Amortization method	Straight-line
Filter Resources, Inc. [Member] \| Customer relationships [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Estimated value	10,800
Weighted average Useful life	15 years
Amortization method	Straight-line
Stanadyne [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Estimated value		146,430
Stanadyne [Member] \| Customer relationships [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Estimated value		135,250
Weighted average Useful life		13 years
Amortization method		Straight-line
Stanadyne [Member] \| Developed technology [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Estimated value		11,000
Weighted average Useful life		10 years
Amortization method		Straight-line
Air Filtrations Segment of General Electric [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Estimated value			133,020
Air Filtrations Segment of General Electric [Member] \| Trademarks [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Estimated value			50
Weighted average Useful life			1 year
Amortization method			Accelerated
Air Filtrations Segment of General Electric [Member] \| Customer relationships [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Estimated value			77,300
Weighted average Useful life			13 years
Amortization method			Straight-line
Air Filtrations Segment of General Electric [Member] \| Developed technology [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Estimated value			19,900
Weighted average Useful life			13 years
Amortization method			Straight-line
Air Filtrations Segment of General Electric [Member] \| Backlog [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Estimated value			670
Weighted average Useful life			1 year
Amortization method			Accelerated
Trademarks [Member] \| Stanadyne [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Estimated value		180
Trade names [Member] \| Air Filtrations Segment of General Electric [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Estimated value			$ 35,100
Amortization method			Not amortized