Note 13 - Information Concerning Product Lines, Geographic Information and Revenue Concentration - Customer and Distributor Concentration of Revenue (Details) - Customer Concentration Risk [Member] - Revenue Benchmark [Member]

12 Months Ended

Jan. 01, 2023

Jan. 02, 2022

Jan. 03, 2021

Distributor "A" [Member]

Concentration risk percentage

15.00%

24.00%

Distributor "B" [Member]

Concentration risk percentage

12.00%

22.00%

19.00%

Distributor "C" [Member]

Concentration risk percentage

11.00%

15.00%

Customer "A" [Member]

Concentration risk percentage

20.00%

Customer "B" [Member]

Concentration risk percentage

10.00%

Customer "C" [Member]

Concentration risk percentage

16.00%

Customer "F" [Member]

Concentration risk percentage

12.00%

14.00%

Customer "H" [Member]

Concentration risk percentage

10.00%

Customer "J" [Member]

Concentration risk percentage

16.00%