Basis of presentation.

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Costs recognized on inferior ingredients.

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Recovery on inferior ingredients.

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Reimbursement of previously incurred costs on inferior ingredients.

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Additional information about the entity or its reportable segments that may contribute to an understanding of the enterprise.

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Amount of direct write-downs of accounts receivable charged against the allowance.

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For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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Basis of Presentation - Additional Information (Detail) - USD ($)	4 Months Ended		12 Months Ended
	Apr. 18, 2020	Apr. 20, 2019	Dec. 28, 2019
Basis of Presentation [Line Items]
Segment reporting, description	The company has one operating segment based on the nature of products the company sells, intertwined production and distribution model, the internal management structure and information that is regularly reviewed by the chief executive officer (“CEO”), who is the chief operating decision maker, for the purpose of assessing performance and allocating resources.
Additional bad debt allowance	$ 4,668,000
Costs recognized on inferior ingredients	0	$ 1,300,000
Reimbursements of previously incurred inferior ingredients costs		1,700,000
Recovery recognized on inferior ingredients	0	$ 413,000
Food Service Customers
Basis of Presentation [Line Items]
Additional bad debt allowance	$ 2,700,000
Outstanding Trade Receivables \| Wal-Mart/Sam's Club \| Customer Concentration Risk
Basis of Presentation [Line Items]
Concentration risk percentage	21.20%		18.90%
Unsecured Credit Facility
Basis of Presentation [Line Items]
Line of credit facility, additional borrowing capacity	$ 200,000,000.0
Line of credit facility, amount available	$ 266,600,000