Note 7 - Leases (Details Textual) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jul. 02, 2022	Jul. 03, 2021	Jul. 02, 2022	Jul. 03, 2021
Operating Lease, Weighted Average Remaining Lease Term (Year)	3 years 9 months 18 days		3 years 9 months 18 days
Operating Lease, Weighted Average Discount Rate, Percent	5.40%		5.40%
Operating Lease, Cost	$ 1.9	$ 1.9	$ 3.9	$ 3.9
Operating Lease Liability for Previously Restructured Facilities	$ 6.5		$ 6.5