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Note O - Segment Reporting (Details Textual)	3 Months Ended								12 Months Ended
	Sep. 26, 2020 USD ($)	Jun. 30, 2020 USD ($)	Mar. 28, 2020 USD ($)	Dec. 28, 2019 USD ($)	Sep. 28, 2019 USD ($)	Jun. 29, 2019 USD ($)	Mar. 30, 2019 USD ($)	Dec. 29, 2018 USD ($)	Sep. 26, 2020 USD ($)	Sep. 28, 2019 USD ($)	Sep. 29, 2018 USD ($)
Number of Operating Segments									3
Number of Reportable Segments									3
Revenue from Contract with Customer, Including Assessed Tax	$ 252,536,000	$ 214,563,000	$ 272,042,000	$ 282,897,000	$ 311,872,000	$ 326,701,000	$ 276,302,000	$ 271,612,000	$ 1,022,038,000	$ 1,186,487,000	$ 1,138,265,000
Operating Income (Loss), Total									17,194,000	116,956,000	110,775,000
Food Service [Member]
Revenue from Contract with Customer, Including Assessed Tax									618,893,000	735,987,000	719,391,000
Operating Income (Loss), Total									6,458,000	76,546,000	71,285,000
Retail Supermarket [Member]
Revenue from Contract with Customer, Including Assessed Tax									177,165,000	144,592,000	147,492,000
Operating Income (Loss), Total									$ 23,202,000	10,460,000	$ 11,075,000
MARYB's Biscuit Operations [Member] | Food Service [Member] | Revision of Prior Period, Reclassification, Adjustment [Member]
Revenue from Contract with Customer, Including Assessed Tax										(25,316,000)
Operating Income (Loss), Total										1,584,000
MARYB's Biscuit Operations [Member] | Retail Supermarket [Member] | Revision of Prior Period, Reclassification, Adjustment [Member]
Revenue from Contract with Customer, Including Assessed Tax										25,316,000
Operating Income (Loss), Total										$ 1,584,000

X

- Definition

Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues.

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