Note 13 - Information Concerning Product Lines, Geographic Information and Revenue Concentration - Customer and Distributor Concentration of Accounts Receivable (Details) - Customer Concentration Risk [Member] - Accounts Receivable [Member]	12 Months Ended
	Jan. 01, 2023	Jan. 02, 2022
Distributor "A" [Member]
Concentration risk percentage	14.00%	42.00%
Distributor "B" [Member]
Concentration risk percentage		22.00%
Distributor "C" [Member]
Concentration risk percentage		17.00%
Customer "C" [Member]
Concentration risk percentage	22.00%
Customer "F" [Member]
Concentration risk percentage	44.00%	10.00%