Unaudited Condensed Consolidated Statements of Operations (Unaudited) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Oct. 02, 2022	Oct. 03, 2021	Oct. 02, 2022	Oct. 03, 2021
Total revenue		$ 3,459	$ 3,858	$ 12,096	$ 8,980
Cost of revenue		1,781	1,126	5,413	3,638
Gross profit		1,678	2,732	6,683	5,342
Operating expenses:
Research and development		1,018	1,807	3,541	5,346
Selling, general and administrative		1,900	2,186	6,018	5,927
Total operating expenses		2,918	3,993	9,559	11,273
Loss from operations		(1,240)	(1,261)	(2,876)	(5,931)
Interest expense		(44)	(35)	(98)	(99)
Gain on forgiveness of debt		0	0	0	1,192
Interest income and other expense, net		(60)	(7)	(42)	(59)
Loss before income taxes		(1,344)	(1,303)	(3,016)	(4,897)
Provision for (benefit from) income taxes		3	(21)	19	136
Net loss		$ (1,347)	$ (1,282)	$ (3,035)	$ (5,033)
Net loss per share:
Basic and diluted (in dollars per share)	[1]	$ (0.11)	$ (0.11)	$ (0.24)	$ (0.44)
Weighted average shares outstanding:
Basic and diluted (in shares)		12,664	11,573	12,401	11,441

[1] Net loss equals comprehensive loss for all periods presented.