Note 4 - Goodwill and Other Intangible Assets (Details Textual) - USD ($) $ in Thousands		3 Months Ended
	Jan. 01, 2025	Mar. 30, 2025	Mar. 31, 2024
Goodwill, Impairment Loss		$ 0	$ 0
Payments to Acquire Intangible Assets		4,760	$ (0)
Cataclean Perpetual License [Member]
Asset Acquisition, Consideration Transferred	$ 23,800
Indefinite-Lived License Agreements	$ 23,800
Payments to Acquire Intangible Assets		4,760
Capital Expenditures Incurred but Not yet Paid		$ 19,040