Note 7 - Income Taxes (Details Textual) - USD ($)	3 Months Ended	9 Months Ended
Jun. 26, 2022	Jun. 27, 2021	Jun. 26, 2022	Jun. 27, 2021
Income Tax Expense (Benefit), Total	$ 156,000	$ 1,366,000	$ 2,363,000	$ 7,106,000
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest, Total	$ 352,000	$ 5,103,000	$ 9,064,000	$ 26,638,000
Effective Income Tax Rate Reconciliation, Percent, Total	26.10%	26.80%	44.30%	26.70%
Open Tax Year			2015 2016 2017 2018 2019 2020 2021

Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Amount of income (loss) from continuing operations before deduction of income tax expense (benefit) and income (loss) attributable to noncontrolling interest, and addition of income (loss) from equity method investments.

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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Tax year that remains open to examination under enacted tax laws, in YYYY format.

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