Note 6 - Intangible Assets and Goodwill - Amortization Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 28, 2024	Dec. 30, 2023	Dec. 31, 2022
Amortization of intangible assets	$ 4,697	$ 4,552	$ 4,832
Research and Development Expense [Member]
Amortization of intangible assets	1,218	1,074	1,054
Amortization of Acquired Intangible Assets [Member]
Amortization of intangible assets	$ 3,479	$ 3,478	$ 3,778