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Adoption of New Accounting Standards and Recently Issued Accounting Standards - Schedule of Adoption of Guidance Using Retrospective Method Resulted in Decreased Net Sales and Cost of Sales (Detail) - Accounting Standards Update 2014-09 [Member] - USD ($) $ in Thousands | 3 Months Ended | 4 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | --- | ---
Jul. 14, 2018 | Dec. 30, 2017 | Oct. 07, 2017 | Jul. 15, 2017 | Apr. 22, 2017 | Jul. 14, 2018 | Dec. 30, 2017
New Accounting Pronouncements Or Change In Accounting Principle [Line Items] |  |  |  |  |  |  |
Decrease in net sales | $ 53,300 | $ 38,725 | $ 38,246 | $ 38,510 | $ 48,802 | $ 95,900 | $ 164,283
Decrease in cost of sales | $ 53,300 | $ 38,725 | $ 38,246 | $ 38,510 | $ 48,802 | $ 95,900 | $ 164,283

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