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Note 3 - Restructuring - Restructuring Activity (Details) - USD ($) $ in Thousands	3 Months Ended						9 Months Ended
	Jul. 02, 2022	Apr. 02, 2022	Jan. 01, 2022	Jul. 03, 2021	Apr. 03, 2021	Jan. 02, 2021	Jul. 02, 2022	Jul. 03, 2021
Liability	$ 0	$ 4	$ 10	$ 27	$ 47	$ 171	$ 10	$ 171
Restructuring charges	0		47	1,598	545	657
Cash payments	0	(261)	(53)	(218)	(565)	(777)
Non-cash charges	0	622	0	(1,387)	0	(4)
Restructuring charges (recoveries)	0	(365)		1,598			(318)	2,800
Liability	0	0	4	20	27	47	0	20
Employee Severance [Member]
Liability	0	0	0	0	0	0	0	0
Restructuring charges	0		0	0	0	13
Cash payments	0	0	0	0	0	(13)
Non-cash charges	0	0	0	0	0	0
Restructuring charges (recoveries)		0
Liability	0	0	0	0	0	0	0	0
Equipment Relocation [Member]
Liability	0	0	0	0	13	20	0	20
Restructuring charges	0		0	35	286	88
Cash payments	0	0	0	(35)	(299)	(95)
Non-cash charges	0	0	0	0	0	0
Restructuring charges (recoveries)		0
Liability	0	0	0	0	0	13	0	0
Facility Closing [Member]
Liability	0	4	10	27	34	151	10	151
Restructuring charges	0		47	176	259	552
Cash payments	0	(261)	(53)	(183)	(266)	(669)
Non-cash charges	0	0	0	0	0	0
Restructuring charges (recoveries)		257
Liability	0	0	4	20	27	34	0	20
Asset Impairments [Member]
Liability	0	0	0	0	0	0	0	0
Restructuring charges	0		0	1,387	0	4
Cash payments	0	0	0	0	0	0
Non-cash charges	0	0	0	(1,387)	0	(4)
Restructuring charges (recoveries)		0
Liability	0	0	0	0	0	0	0	0
Gain on Sale of Property and Equipment [Member]
Liability	0	0	0	0	0	0	0	0
Restructuring charges	0		0	0	0	0
Cash payments	0	0	0	0	0	0
Non-cash charges	0	622	0	0	0	0
Restructuring charges (recoveries)		(622)
Liability	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0

X

- Definition

Amount of expenses (recoveries) associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses (recoveries) related to a discontinued operation or an asset retirement obligation.

+ References

No definition available.

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- Definition

Amount of increase (decrease) in the reserve for full or partial settlement through consideration other than cash.

+ References

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- Definition

Amount of cash payments made as the result of exit or disposal activities. Excludes payments associated with a discontinued operation or an asset retirement obligation.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (b)(2)
-URI https://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 17
-Subparagraph (f)
-URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3367-108585

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Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section 45
-Paragraph 3
-URI https://asc.fasb.org/extlink&oid=109237686&loc=d3e17752-110868

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SAB Topic 5.P.3)
-URI https://asc.fasb.org/extlink&oid=115931487&loc=d3e140864-122747

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-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3602-108585

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SAB Topic 5.P.4(b)(1))
-URI https://asc.fasb.org/extlink&oid=115931487&loc=d3e140904-122747

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- Definition

Carrying amount (including both current and noncurrent portions of the accrual) as of the balance sheet date pertaining to a specified type of cost associated with exit from or disposal of business activities or restructuring pursuant to a duly authorized plan.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (b)(2)
-URI https://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SAB TOPIC 5.P.4(b)(2))
-URI https://asc.fasb.org/extlink&oid=115931487&loc=d3e140904-122747

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