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Tax Credits and Losses Subject to Expiration by Major Jurisdictions (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011
Internal Revenue Service (IRS) | Net Operating Loss Carryforwards
Tax Credit Carryforward [Line Items]
Gross Values	$ 31,203
Years	2030
Internal Revenue Service (IRS) | Investment Credit
Tax Credit Carryforward [Line Items]
Gross Values	15,879
Years	2015
Internal Revenue Service (IRS) | Foreign Tax Credits
Tax Credit Carryforward [Line Items]
Gross Values	3,832
Years	2016 - 2019
Internal Revenue Service (IRS) | Federal Business Tax Credits
Tax Credit Carryforward [Line Items]
Gross Values	3,677
Years	2026 - 2030
Connecticut State
Tax Credit Carryforward [Line Items]
Gross Values	2,722
Years	2029 - 2031
Georgia State
Tax Credit Carryforward [Line Items]
Gross Values	1,296
Years	2028 - 2031
Idaho State
Tax Credit Carryforward [Line Items]
Gross Values	5,321
Years	2012 - 2025
North Carolina
Tax Credit Carryforward [Line Items]
Gross Values	3,454
Years	2015
Oklahoma
Tax Credit Carryforward [Line Items]
Gross Values	$ 2,580
Years	2030 - 2031

X

- Definition

Operating Loss And Tax Credit Carryforwards

+ References

No definition available.

+ Details

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Namespace Prefix:	clw_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

State the expiration dates of the tax credit carryforward.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 109

-Paragraph 48

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

-Paragraph 3

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32559-109319

+ Details

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

X

- Details

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