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Assets Held for Sale - Summary of Assets Held for Sale (Detail) (USD $) In Thousands, unless otherwise specified | Dec. 31, 2012 | Dec. 31, 2011
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Assets Held For Sale [Line Items] |  |
Total Assets Held for Sale | $ 1,965 | $ 6,649
Byron Center facility [Member] |  |
Assets Held For Sale [Line Items] |  |
Total Assets Held for Sale |  | 4,444
River Grove facility [Member] |  |
Assets Held For Sale [Line Items] |  |
Total Assets Held for Sale | 1,535 | 1,775
Neenah land [Member] |  |
Assets Held For Sale [Line Items] |  |
Total Assets Held for Sale | $ 430 | $ 430

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- Definition Property, plant and equipment that is held for sale apart from normal operations and anticipated to be sold in less than one year. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 45 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=6892542&loc=d3e1107-107759 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 144 -Paragraph 46 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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. + Details
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