Note 16 - Accumulated Other Comprehensive Loss - Components of Accumulated Other Comprehensive Loss, Net of Tax (Details) - USD ($) $ in Thousands	Dec. 30, 2023	Dec. 31, 2022
Total accumulated other comprehensive loss	$ (34,779)	$ (40,012)
Accumulated Foreign Currency Adjustment Attributable to Parent [Member]
Accumulated net currency translation adjustments	(39,493)	(46,308)
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member]
Accumulated net adjustments related to postretirement benefits	4,656	7,031
AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-Sale, Parent [Member]
Accumulated net unrealized gain/loss on investments	58	(735)
AOCI Attributable to Parent [Member]
Total accumulated other comprehensive loss	$ (34,779)	$ (40,012)