Note 8 - Intangible Assets - Amortization Expense (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 27, 2025	Sep. 28, 2024	Sep. 27, 2025	Sep. 28, 2024
Amortization of intangible assets	$ 597	$ 1,169	$ 1,659	$ 3,421
Research and Development Expense [Member]
Amortization of intangible assets	577	299	1,626	812
Amortization of Acquired Intangible Assets [Member]
Amortization of intangible assets	$ 20	$ 870	$ 33	$ 2,609