Note 6 - Restructuring (Details Textual) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 27, 2025	Sep. 28, 2024	Sep. 27, 2025	Sep. 28, 2024
Q3 2024 Plan 1 [Member]
Restructuring and Related Cost, Incurred Cost	$ 800	$ 6,500	$ 2,400	$ 6,500
Restructuring and Related Cost, Cost Incurred to Date	10,000		10,000
Q3 2023 Plan [Member]
Restructuring and Related Cost, Incurred Cost		$ 300	0	$ 5,300
Restructuring and Related Cost, Cost Incurred to Date	$ 7,300		$ 7,300