Income Taxes - Tax Effect of Temporary Differences and Carryforwards that Give Rise to Significant Portions of the Net Deferred Tax Assets (Details) - USD ($) $ in Thousands	Dec. 28, 2024	Dec. 30, 2023
Deferred tax assets:
Net operating losses	$ 15,118	$ 13,268
Research and development credits	4,295	4,225
Accruals and reserves	1,562	1,573
Deferred revenue	2,277	2,593
Property and equipment	240	237
Intangible assets	223	281
Section 174 research and experimental expenditures capitalization	2,927	2,544
Stock compensation	574	725
Other tax credits	1	1
Total deferred tax asset	27,217	25,447
Less: Valuation allowance	(27,114)	(25,357)
Total deferred tax assets, net	103	90
Deferred tax liabilities:
Goodwill	(132)	(116)
Total deferred tax liabilities	(132)	(116)
Net deferred tax liabilities	$ (29)	$ (26)