CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	3 Months Ended
	Mar. 30, 2024	Apr. 01, 2023
Net revenues:
Total net revenues	$ 9,631	$ 11,542
Cost of net revenues:
Total cost of net revenues	5,427	6,823
Gross profit	4,204	4,719
Operating expenses:
Research and development	4,369	3,973
Selling, general and administrative	4,281	5,200
Total operating expenses	8,650	9,173
Loss from operations	(4,446)	(4,454)
Interest income and other income (expense), net	2,221	672
Loss from continuing operations before provision for income taxes	(2,225)	(3,782)
Provision for income taxes	476	386
Net loss from continuing operations	(2,701)	(4,168)
Income (loss) from discontinued operations, net of tax	1,095	277
Net loss	$ (1,606)	$ (3,891)
Net income (loss) per share:
Basic—continuing operations	$ (0.1)	$ (0.16)
Diluted—continuing operations	(0.1)	(0.16)
Basic—discontinued operations	0.04	0.01
Diluted—discontinued operations	0.04	0.01
Basic—net income (loss)	(0.06)	(0.15)
Diluted—net income (loss)	$ (0.06)	$ (0.15)
Weighted average shares outstanding:
Basic	26,522	25,781
Diluted	26,522	25,781