Note 7 - Income Taxes (Details Textual) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jun. 24, 2023	Jun. 25, 2022	Jun. 24, 2023	Jun. 25, 2022	Sep. 24, 2022
Unrecognized Tax Benefits that Would Impact Effective Tax Rate	$ 0.3		$ 0.3		$ 0.3
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued	$ 0.3		$ 0.3		$ 0.3
Effective Income Tax Rate Reconciliation, Percent	26.50%	26.60%	26.40%	26.10%