Note L - 401(k) Profit-sharing Plan (Details Textual) - USD ($) $ in Millions	12 Months Ended
Sep. 24, 2022	Sep. 25, 2021	Sep. 26, 2020
Defined Contribution Plan, Employer Discretionary Contribution Amount	$ 2.5	$ 2.3	$ 2.4

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