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v3.20.1

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 |  |

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