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Note 4 - Restructuring Charges (Details Textual) - USD ($) $ in Thousands	3 Months Ended			9 Months Ended
	Sep. 27, 2025	Jun. 28, 2025	Sep. 28, 2024	Sep. 27, 2025	Sep. 28, 2024
Restructuring Charges	$ 509		$ 14	$ 8,347	$ 36
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Curtailment	787		$ 0	2,317	$ 0
Poway Volume Manufacturing Transition [Member]
Restructuring Charges				1,503
The 2025 Strategic Restructuring [Member]
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Curtailment	$ 800	$ 1,500
2025 Strategic Restructuring [Member]
Restructuring Charges				$ 6,845

X

- Definition

Amount of gain (loss) recognized in net periodic benefit (cost) credit from event reducing expected years of future service of present employees or eliminating accrual of defined benefits for some or all future services of present employees.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
-Section 45
-Paragraph 3A
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480535/715-20-45-3A

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-Publisher FASB
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-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480506/715-20-50-6

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X

- Definition

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://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 45
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-Subparagraph (b)
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