Note 7 - Leases - Lease Balance Classifications Within the Consolidated Balance Sheets and Lease Activity (Details) - USD ($) $ in Thousands	6 Months Ended
	Jul. 02, 2022	Jul. 03, 2021	Jan. 01, 2022
Balance	$ 23,818
Right-of-use assets obtained for new lease contracts during the period	476
Amortization of right-of-use assets during the period	(3,358)	$ (3,291)
Adjustments for present value and foreign currency effects	(529)
Balance	20,407
Balance	24,944
Lease liabilities incurred for new lease contracts during the period	476
Accretion of lease liabilities	586
Operating cash used by payments on lease liabilities	(3,706)	$ (3,984)
Adjustments for present value and foreign currency effects	(516)
Balance	21,784
Long-term operating lease liabilities, net of current portion	15,917		$ 19,248
Accounts Payable and Accrued Liabilities [Member]
Less: Current portion of operating lease liabilities (included in Accrued expenses)	$ (5,867)