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Deferred Compensation Plans - Additional Information (Detail) - USD ($) | 12 Months Ended
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Dec. 28, 2018 | Dec. 29, 2017 | Dec. 30, 2016
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items] |  |  |
Trading securities | $ 57,778,000 | $ 53,350,000 |
Deferred compensation plan vested amounts due | 59,349,000 | 59,050,000 |
Change in market value of trust assets | $ (3,900,000) | $ 6,547,000 | $ 3,861,000
Maximum |  |  |
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items] |  |  |
Percentage of compensation deferred | 100.00% |  |

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- Definition Deferred Compensation Plan Vested Amounts Due. + References No definition available. + Details
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- Definition Percentage of Compensation Deferred under Deferred Compensation Arrangement + References No definition available. + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Amount of investment in debt security measured at fair value with change in fair value recognized in net income (trading) and investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.4) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + Details
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