Note L - 401(k) Profit-sharing Plan (Details Textual) - USD ($) $ in Millions	12 Months Ended
Sep. 30, 2023	Sep. 24, 2022	Sep. 25, 2021
Defined Contribution Plan, Employer Discretionary Contribution Amount	$ 2.8	$ 2.5	$ 2.3

Amount of discretionary contributions made by an employer to a defined contribution plan.

No definition available.

Name:	us-gaap_DefinedContributionPlanEmployerDiscretionaryContributionAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration