Summary of Consideration Paid Based on the Fair Value at the Acquisition Date (Detail) - USD ($) $ in Thousands	Dec. 14, 2018	Apr. 20, 2019	Dec. 29, 2018
Business Acquisition [Line Items]
Goodwill		$ 545,244	$ 545,379
Canyon Bakehouse LLC
Business Acquisition [Line Items]
Cash consideration paid	$ 200,208
Working capital adjustments	314
Contingent consideration	4,700
Total consideration	205,222
Property, plant, and equipment	42,165
Identifiable intangible assets	78,380
Financial assets	4,211
Net recognized amounts of identifiable assets acquired	124,756
Goodwill	$ 80,466	$ 545,244	$ 545,379

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