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Note 5 - Summary of Share-based Compensation Expense (Benefit) (Details) - USD ($) $ in Thousands	3 Months Ended
	Dec. 25, 2021	Dec. 26, 2020
Share-based compensation	$ 996	$ 824
The above compensation is net of tax benefits	87	420
Share-based Payment Arrangement, Option [Member]
Share-based compensation	814	546
Stock Purchase Plan [Member]
Share-based compensation	60	278
Stock Issued to Outside Directors [Member]
Share-based compensation	11	0
Restricted Stock Units (RSUs) [Member]
Share-based compensation	72	0
Performance Shares [Member]
Share-based compensation	$ 39	$ 0

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- Definition

Amount, after tax, of expense for award under share-based payment arrangement.

+ References

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- Definition

Amount of tax benefit for recognition of expense of award under share-based payment arrangement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (h)(1)(i)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

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