Note 7 - Leases (Details Textual) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 27, 2025	Sep. 28, 2024	Sep. 27, 2025	Sep. 28, 2024
Operating Lease, Weighted Average Remaining Lease Term (Year)	5 years 2 months 12 days		5 years 2 months 12 days
Operating Lease, Weighted Average Discount Rate, Percent	5.60%		5.60%
Operating Lease, Cost	$ 1.7	$ 2.1	$ 6.1	$ 6.4
Operating Lease Liability for Previously Restructured Facilities	$ 1.7		$ 1.7