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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. 31, 2022 | Jan. 01, 2022
--- | --- | ---
Deferred tax assets: |  |
Net operating losses | $ 11,264 | $ 13,751
Research and development credits | 3,904 | 3,582
Accruals and reserves | 2,505 | 2,637
Deferred revenue | 2,640 | 82
Property and equipment | 283 | 361
Intangible assets | 344 | 268
Section 174 research and experimental expenditures capitalization | 1,500 | 0
Stock compensation | 717 | 574
Other tax credits | 1 | 0
Total deferred tax asset | 23,158 | 21,255
Less: Valuation allowance | (23,078) | (21,280)
Total deferred tax assets, net | 80 | 25
Deferred tax liabilities: |  |
Goodwill | (104) | 0
Total deferred tax liabilities | (104) | 0
Net deferred tax liabilities | $ (24) | $ (25)

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