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Income Taxes - Schedule of Company's Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands | Dec. 31, 2021 | Dec. 31, 2020
--- | --- | ---
Deferred tax assets: |  |
Net operating losses | $ 19,920 | $ 20,265
Credits | 2,557 | 2,292
Accruals and reserves | 2,605 | 1,648
Deferred revenue and contract costs | 140 | 296
Gross deferred tax assets | 25,222 | 24,501
Valuation allowance | (24,955) | (23,667)
Net deferred tax assets | 267 | 834
Deferred tax liabilities: |  |
Fixed assets and intangibles | $ (267) | (785)
Total deferred tax assets, net |  | $ 49

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