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

12 Months Ended

Jan. 03, 2021

Notes Tables

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

	Fiscal Years
	2020		2019		2018
Revenue by product line (1) :
New products	$	2,782	$	3,123	$	5,735
Mature products		5,852		7,187		6,894
Total revenue	$	8,634	$	10,310	$	12,629

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

	Fiscal Years
	2020		2019		2018
Revenue by geography:
Asia Pacific (1)	$	2,096	$	3,049	$	4,905
Europe		1,501		2,459		1,280
North America (2)		5,037		4,802		6,444
Total revenue	$	8,634	$	10,310	$	12,629

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

	Fiscal Years
	2020			2019			2018
Distributor "A"		24	%		40	%		34	%
Distributor "C"		15	%		13	%		*
Distributor "E"		19	%		*			*
Customer "B"		10	%		13	%		12	%
Customer "E"		*			10	%		*
Customer "F"		19	%		*			*
Customer "G"		*			*			10	%
Customer "J"		*			*			10	%
Customer "M"		16	%		*			*

	January 3,			December 29,
	2021			2019
Distributor "A"		*			20	%
Distributor "C"		*			23	%
Distributor "E"		*			12	%
Distributor "J"		*			31	%
Customer "P"		67	%		*
Customer "Q"		10	%		*