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Acquisitions - Additional Information (Detail) |  | 12 Months Ended |  |
--- | --- | --- | --- | ---
Jan. 06, 2017 USD ($) ft² State | Dec. 30, 2017 USD ($) | Jan. 02, 2016 USD ($) | Dec. 31, 2016 USD ($) | Jun. 16, 2015 USD ($) Store
Business Acquisition [Line Items] |  |  |  |  |
Payments to acquire certain assets and assume liabilities in cash |  | $ 226,939,000 | $ 41,517,000 |  |
Goodwill |  | 178,648,000 | $ 322,902,000 | $ 322,686,000 |
Food Distribution Segment [Member] |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Increase in goodwill, due to updated valuation of long-lived assets | $ 1,300,000 |  |  |  |
Goodwill | 46,300,000 |  |  |  |
Caito Foods Service and Blue Ribbon Transport [Member] |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Payments to acquire certain assets and assume liabilities in cash | 214,600,000 |  |  |  |
Business combination, cash acquired | 2,500,000 |  |  |  |
Business combination, property and equipment acquired | 76,700,000 |  |  |  |
Business combination, Intangible assets acquired | $ 72,900,000 |  |  |  |
Amortization of intangible assets, period | 15 years |  |  |  |
Earn-out opportunities potential to pay sellers | $ 27,400,000 | 3,400,000 |  |  |
Business combination, contingent consideration liability maximum reimbursement initial purchase price | $ 15,000,000 |  |  |  |
Total acquisition-related costs incurred |  | 4,900,000 |  |  |
Acquisition related costs incurred and recorded in merger/acquisition and integration expense during period |  | $ 2,700,000 |  |  |
Caito Foods Service [Member] |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Service distributors across number of states | State | 21 |  |  |  |
Area of new Fresh Kitchen facility | ft² | 118,000 |  |  |  |
Dan's [Member] |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Total purchase price of assets |  |  |  |  | $ 32,600,000
Number of stores acquired | Store |  |  |  |  | 6

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