Note 10 - Information Concerning Product Lines, Geographic Information and Revenue Concentration - Customer and Distributor Concentration of Revenue (Details) - Customer Concentration Risk [Member] - Revenue Benchmark [Member]	3 Months Ended		9 Months Ended
	Oct. 02, 2022	Oct. 03, 2021	Oct. 02, 2022	Oct. 03, 2021
Distributor "A" [Member]
Concentration risk percentage	20.00%	12.00%	15.00%	13.00%
Distributor "B" [Member]
Concentration risk percentage		17.00%	16.00%	24.00%
Distributor "C" [Member]
Concentration risk percentage	10.00%			12.00%
Customer "A" [Member]
Concentration risk percentage	30.00%
Customer "B" [Member]
Concentration risk percentage	13.00%
Customer "C" [Member]
Concentration risk percentage	12.00%	25.00%	20.00%	15.00%
Customer "D" [Member]
Concentration risk percentage		17.00%		24.00%
Customer "F" [Member]
Concentration risk percentage		25.00%	16.00%	11.00%
Customer "H" [Member]
Concentration risk percentage				14.00%