Note 15 - Accumulated Other Comprehensive Income (Loss) - Components of Other Comprehensive Loss (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 28, 2024	Dec. 30, 2023	Dec. 31, 2022
Foreign currency translation adjustments	$ (16,540)	$ 6,256	$ (17,991)
Foreign currency translation adjustments	(299)	559	41
Foreign currency translation adjustments	(16,839)	6,815	(17,950)
Adjustments related to postretirement benefits	615	(2,800)	6,690
Adjustments related to postretirement benefits	(97)	425	(796)
Adjustments related to postretirement benefits	518	(2,375)	5,894
Change in unrealized gain/loss on investments	(55)	793	(694)
Change in unrealized gain/loss on investments	0	0	0
Change in unrealized gain/loss on investments	(55)	793	(694)
Other comprehensive loss	(15,980)	4,249	(11,995)
Other comprehensive loss	(396)	984	(755)
Other comprehensive loss	$ (16,376)	$ 5,233	$ (12,750)

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