Note 14 - Information Concerning Product Lines, Geographic Information, Accounts Receivable and Revenue Concentration (Tables)

12 Months Ended

Jan. 02, 2022

Notes Tables

Revenue from External Customers by Products and Services [Table Text Block]

	Fiscal Years
	2021		2020		2019
Revenue by product line (1) :
New products	$	7,761	$	2,782	$	3,123
Mature products		4,924		5,852		7,187
Total revenue	$	12,685	$	8,634	$	10,310

Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas [Table Text Block]

	Fiscal Years
	2021		2020		2019
Revenue by geography:
Asia Pacific (1)	$	3,352	$	2,100	$	3,049
Europe		2,448		1,501		2,459
North America (2)		6,885		5,033		4,802
Total revenue	$	12,685	$	8,634	$	10,310

Schedule of Revenue by Major Customers by Reporting Segments [Table Text Block]

	Fiscal Years
	2021			2020			2019
Distributor "A"		15	%		24	%		40	%
Distributor "C"		11	%		15	%		13	%
Distributor "E"		22	%		19	%		*
Customer "B"		8	%		10	%		13	%
Customer "E"		10	%		*			10	%
Customer "N"		16	%		*			*
Customer "O"		14	%		*			*
Customer "M"		—	%		16	%		*

	January 2,			January 3,
	2022			2021
Distributor "A"		42	%		*
Distributor "C"		17	%		*
Distributor "E"		22	%		*
Customer "O"		10	%		*
Customer "P"		—	%		67	%
Customer "Q"		—	%		10	%