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Financial Assets and Liabilities that are Measured At Fair Value and are Categorized Using Fair Value Hierarchy (Detail) (Fair Value, Measurements, Recurring, USD $) In Thousands, unless otherwise specified | Mar. 29, 2014 | Dec. 28, 2013
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Pension Plan |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items] |  |
Financial Assets | $ 28,543 | $ 28,496
Interest Rate Swap [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items] |  |
Financial Liabilities | 1,000 | 1,471
Contingent Consideration |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items] |  |
Financial Liabilities | 10,711 | 10,063
Fair Value, Inputs, Level 1 | Pension Plan |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items] |  |
Financial Assets | 27,791 | 27,875
Fair Value, Inputs, Level 1 | Interest Rate Swap [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items] |  |
Financial Liabilities | 0 | 0
Fair Value, Inputs, Level 1 | Contingent Consideration |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items] |  |
Financial Liabilities | 0 | 0
Fair Value, Inputs, Level 2 | Pension Plan |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items] |  |
Financial Assets | 752 | 621
Fair Value, Inputs, Level 2 | Interest Rate Swap [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items] |  |
Financial Liabilities | 1,000 | 1,471
Fair Value, Inputs, Level 2 | Contingent Consideration |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items] |  |
Financial Liabilities | 0 | 0
Fair Value, Inputs, Level 3 | Pension Plan |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items] |  |
Financial Assets | 0 | 0
Fair Value, Inputs, Level 3 | Interest Rate Swap [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items] |  |
Financial Liabilities | 0 | 0
Fair Value, Inputs, Level 3 | Contingent Consideration |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items] |  |
Financial Liabilities | $ 10,711 | $ 10,063

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- Definition Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=25499696&loc=d3e19207-110258 + Details
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- Definition Fair value of financial and nonfinancial obligations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=25499696&loc=d3e19207-110258 + Details
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