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Note 4 - Restructuring Charges (Details Textual) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 27, 2026	Jun. 28, 2025	Jun. 27, 2026	Jun. 28, 2025
Restructuring Charges	$ 633	$ 1,210	$ 1,404	$ 7,838
Pension curtailment gain	$ 0	1,530	0	1,530
Poway Volume Manufacturing Transition [Member]
Restructuring Charges				1,224
The 2025 Strategic Restructuring [Member]
Pension curtailment gain		$ 1,500
2025 Strategic Restructuring [Member]
Restructuring Charges			$ 1,403	$ 6,615

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.

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- 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.

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