Note 12 - Investments (Details Textual) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Jun. 29, 2024	Jun. 24, 2023	Jun. 29, 2024	Jun. 24, 2023	Sep. 30, 2023
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	$ 0		$ 0		$ 0
Investments	0		0		$ 0
Proceeds from Sale and Maturity of Marketable Securities	0	$ 0	0	$ 5,300
Marketable Security, Gain (Loss)	$ 0	100	$ 0	105
Marketable Security, Unrealized Gain (Loss)		$ 100		$ 100

Amount, before allowance for credit loss, of investment in debt security measured at amortized cost (held-to-maturity).

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-Topic 310
-SubTopic 10
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Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
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Period Type:	instant

- Definition

Sum of the carrying amounts as of the balance sheet date of all investments.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount of realized and unrealized gain (loss) on investment in marketable security.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount of unrealized gain (loss) on investment in marketable security.

+ References

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-SubTopic 10
-Name Accounting Standards Codification
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-Paragraph 2
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- Definition

The cash inflow associated with the aggregate amount received by the entity through sale or maturity of marketable securities (held-to-maturity or available-for-sale) during the period.

+ References

No definition available.

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