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Income Taxes - Components of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands | Dec. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Deferred tax assets: |  |
Net operating loss carryforwards | $ 31,342 | $ 24,092
Research and development tax credit carryforwards | 9,327 | 4,218
Accrued liabilities | 2,828 | 2,781
Stock-based compensation | 2,564 | 1,676
Operating lease liability | 333 | 404
Other | 180 | 121
Capitalized research and development | 25,182 | 10,729
Total deferred tax assets | 71,756 | 44,021
Deferred tax liabilities: |  |
Right of use asset | (221) | (267)
Prepaid expenses and other | (75) | (475)
Investments | (214) | (294)
Total deferred tax liabilities | (510) | (1,036)
Less valuation allowance | (71,246) | (42,985)
Net deferred tax assets | $ 0 | $ 0

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