Note 9 - Information Concerning Product Lines, Geographic Information and Revenue Concentration - Schedule of Revenue by Product Line (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 03, 2022	Jul. 04, 2021	Jul. 03, 2022	Jul. 04, 2021
Total revenue	$ 4,541	$ 2,882	$ 8,637	$ 5,122
New Products [Member]
Total revenue	3,131	1,262	6,581	2,337
Hardware Products [Member]
Total revenue	1,464	1,069	3,299	2,074
Mature Products [Member]
Total revenue	1,410	1,620	2,056	2,785
"eFPGA IP" Property Licenses [Member]
Total revenue	1,617	150	3,188	150
SaaS [Member]
Total revenue	$ 50	$ 43	$ 94	$ 113