Note 5 - Stock-based Compensation - Non-vested Restricted Stock Units (Details) - $ / shares	3 Months Ended
Dec. 26, 2023	Dec. 27, 2022
Units granted during the quarter, shares (in shares)	34,000
Units granted during the quarter, weighted average grant date fair value (in dollars per share)	$ 2.52
Non-vested units, grant date fair value per share (in dollars per share)	$ 2.52
Restricted Stock Units (RSUs) [Member]
Non-vested units at beginning of year, shares (in shares)	45,250
Units granted during the quarter, shares (in shares)	34,000	25,750
Non-vested units, shares (in shares)	79,250
Restricted Stock Units (RSUs) [Member] \| Minimum [Member]
Non-vested units at beginning of year, grant date fair value per share (in dollars per share)	$ 2.29
Units granted during the quarter, weighted average grant date fair value (in dollars per share)	2.29
Non-vested units, grant date fair value per share (in dollars per share)	2.29
Restricted Stock Units (RSUs) [Member] \| Maximum [Member]
Non-vested units at beginning of year, grant date fair value per share (in dollars per share)	4.5
Units granted during the quarter, weighted average grant date fair value (in dollars per share)	4.5
Non-vested units, grant date fair value per share (in dollars per share)	$ 4.5

The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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- Definition

The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(i)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480429/718-10-50-2

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(ii)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480429/718-10-50-2

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- Definition

Per share or unit weighted-average fair value of nonvested award under share-based payment arrangement. Excludes share and unit options.

+ References

+ Details

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