CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 01, 2023	Jul. 02, 2022	Jul. 01, 2023	Jul. 02, 2022
Net revenues:
Net revenues	$ 10,301	$ 9,307	$ 21,843	$ 13,752
Cost of net revenues:
Cost of net revenues	7,731	4,820	14,554	8,543
Gross profit	2,570	4,487	7,289	5,209
Operating expenses:
Research and development	3,647	2,868	7,620	7,028
Selling, general and administrative	4,375	4,016	9,575	8,265
Total operating expenses	8,022	6,884	17,195	15,293
Loss from operations	(5,452)	(2,397)	(9,906)	(10,084)
Interest income and other income (expense), net	650	317	1,322	310
Loss from continuing operations before provision for income taxes	(4,802)	(2,080)	(8,584)	(9,774)
Provision for income taxes	116	500	502	526
Net loss from continuing operations, net of taxes	(4,918)	(2,580)	(9,086)	(10,300)
Net income (loss) from discontinued operations, net of taxes	40	(238)	317	(373)
Net loss	$ (4,878)	$ (2,818)	$ (8,769)	$ (10,673)
Net income (loss) per share:
Basic – continuing operations	$ (0.19)	$ (0.1)	$ (0.35)	$ (0.41)
Diluted – continuing operations	(0.19)	(0.1)	(0.35)	(0.41)
Basic – discontinued operations	0	(0.01)	0.01	(0.01)
Diluted – discontinued operations	0	(0.01)	0.01	(0.01)
Basic – net loss	(0.19)	(0.11)	(0.34)	(0.43)
Diluted – net loss	$ (0.19)	$ (0.11)	$ (0.34)	$ (0.43)
Weighted average common shares outstanding:
Basic	26,032	25,141	25,907	24,970
Diluted	26,032	25,141	25,907	24,970