Note 10 - Information Concerning Product Lines, Geographic Information and Revenue Concentration - Schedule of Revenue by Product Line (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 02, 2022	Oct. 03, 2021	Oct. 02, 2022	Oct. 03, 2021
Total revenue	$ 3,459	$ 3,858	$ 12,096	$ 8,980
New Products [Member]
Total revenue	2,252	2,758	8,833	5,095
Hardware Products [Member]
Total revenue	308	1,720	3,607	3,794
Mature Products [Member]
Total revenue	1,207	1,100	3,263	3,885
eFPGA IP [Member]
Total revenue	1,700	1,000	4,911	1,150
SaaS and Other [Member]
Total revenue	$ 244	$ 38	$ 315	$ 151