Note 3 - Revenue From Contracts With Customers - Contract Balance (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 01, 2022	Jan. 02, 2021
Contract assets, balance	$ 5,611	$ 5,569
Revenues recorded during the period	15,587	15,860
Transferred to Accounts receivable or collected	(15,526)	(15,818)
Contract assets, balance	5,672	5,611
Contract liabilities, balance	3,068	2,313
Accruals for estimated future stock rotation and scrap returns	4,613	5,976
Less: Release of accruals for recognized stock rotation and scrap returns	(2,913)	(5,221)
Contract liabilities, balance	$ 4,768	$ 3,068