Note 7 - Leases (Details Textual) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Oct. 01, 2022	Oct. 01, 2021	Oct. 01, 2022	Oct. 01, 2021
Operating Lease, Weighted Average Remaining Lease Term (Year)	3 years 7 months 6 days		3 years 7 months 6 days
Operating Lease, Weighted Average Discount Rate, Percent	5.40%		5.40%
Operating Lease, Cost	$ 1.9	$ 2.0	$ 5.8	$ 5.9
Operating Lease Liability for Previously Restructured Facilities	$ 6.2		$ 6.2