Inventories - Summary of Inventories (Detail) - USD ($) $ in Thousands	Sep. 29, 2019	Dec. 30, 2018
Inventory Disclosure [Abstract]
Finished products	$ 155,338	$ 135,561
Manufacturing materials	38,434	39,840
Plastic shells, plastic pallets and other inventories	37,980	34,632
Total inventories	$ 231,752	$ 210,033

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Carrying amount, net of valuation reserves and adjustments, as of the balance sheet date of merchandise or goods held by the company that are readily available for sale.

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Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer.

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Carrying amount, net of valuation reserves and adjustments, as of the balance sheet date of unprocessed items to be consumed in the manufacturing or production process.

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Amount, after of valuation reserves and allowances, of inventory, classified as other, expected to be sold, or consumed within one year or operating cycle, if longer.

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