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Fair Value of Financial Instruments - Deferred Compensation Plan and Acquisition Related Contingent Consideration (Detail) (USD $) In Thousands, unless otherwise specified | Dec. 28, 2014 | Dec. 29, 2013
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Fair Value, Option, Qualitative Disclosures Related to Election [Line Items] |  |
Acquisition related contingent consideration | $ 46,850us-gaap_BusinessCombinationContingentConsiderationLiability | $ 0us-gaap_BusinessCombinationContingentConsiderationLiability
Level 1 [Member] |  |
Fair Value, Option, Qualitative Disclosures Related to Election [Line Items] |  |
Deferred compensation plan assets | 18,580us-gaap_DeferredCompensationPlanAssets / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member | 17,098us-gaap_DeferredCompensationPlanAssets / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member
Deferred compensation plan liabilities | 18,580us-gaap_DeferredCompensationLiabilityCurrentAndNoncurrent / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member | 17,098us-gaap_DeferredCompensationLiabilityCurrentAndNoncurrent / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member
Level 2 [Member] |  |
Fair Value, Option, Qualitative Disclosures Related to Election [Line Items] |  |
Deferred compensation plan assets |  |
Deferred compensation plan liabilities |  |
Acquisition related contingent consideration |  |
Level 3 [Member] |  |
Fair Value, Option, Qualitative Disclosures Related to Election [Line Items] |  |
Acquisition related contingent consideration | $ 46,850us-gaap_BusinessCombinationContingentConsiderationLiability / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member |

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- Definition Amount of liability recognized arising from contingent consideration in a business combination. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 25 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=6911189&loc=d3e6408-128476 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 35 -Paragraph 1 -Subparagraph b -URI http://asc.fasb.org/extlink&oid=6911338&loc=d3e6819-128478 + Details
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- Definition Aggregate carrying value as of the balance sheet date of the liabilities for all deferred compensation arrangements. Represents currently earned compensation under compensation arrangements that is not actually paid until a later date. + References No definition available. + Details
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- Definition Carrying amount as of the balance sheet date of assets held under deferred compensation agreements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.17) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 17 -Article 5 + Details
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