Note 9 - Retirement Plan (Details Textual) - USD ($)	12 Months Ended
	Sep. 26, 2023	Sep. 27, 2022
Defined Contribution Plan, Employer Matching Contribution, Percent of Match	3.00%
Defined Contribution Plan, Maximum Annual Contributions Per Employee, Percent	50.00%
Defined Contribution Plan, Cost	$ 212,000	$ 207,000
Minimum [Member]
Defined Contribution Plan, Employer Matching Contribution, Percent of Match	3.00%
Maximum [Member]
Defined Contribution Plan, Employer Matching Contribution, Percent of Match	5.00%