Note 4 - Balance Sheet Components - Balance Sheet Components (Details) - USD ($) $ in Thousands		Oct. 02, 2022	Jan. 02, 2022
Trade account receivables		$ 2,506	$ 1,113
Less: Allowance for doubtful accounts		(60)	(62)
Trade account receivables, net		2,446	1,051
Contract assets		1,459	243
Accounts Receivable, after Allowance for Credit Loss, Total		3,905	1,294
Inventories:
Work-in-process		1,455	1,397
Finished goods		746	681
Inventory, Net, Total		2,201	2,078
Other current assets:
Prepaid taxes, royalties, and other prepaid expenses		936	921
Other		421	260
Prepaid Expense and Other Assets, Current		1,357	1,181
Property and equipment, net:
Property and equipment, gross		12,463	12,717
Less: Accumulated depreciation and amortization		(11,949)	(12,218)
Property, Plant and Equipment, Net, Total		514	499
Capitalized internal-use software, net:
Capitalized internal-use software		2,194	1,699
Less: Accumulated amortization		(743)	(458)
Capitalized Computer Software, Net, Ending Balance		1,451	1,241
Accrued liabilities:
Accrued compensation		679	740
Accrued employee benefits		121	111
Accrued payroll tax		157	102
Other	[1]	556	712
Accrued Liabilities, Current, Total		1,513	1,665
Equipment [Member]
Property and equipment, net:
Property and equipment, gross		10,173	10,341
Software and Software Development Costs [Member]
Property and equipment, net:
Property and equipment, gross		1,803	1,878
Furniture and Fixtures [Member]
Property and equipment, net:
Property and equipment, gross		21	32
Leasehold Improvements [Member]
Property and equipment, net:
Property and equipment, gross		$ 466	$ 466

[1] Accrued liabilities-Other is partially comprised of a $100 non-cash lease adjustment offseting Other Assets in the six months ended July 3, 2022.