Income Taxes - Schedule of Deferred Tax Assets and Liabilities from Federal and State Income Taxes (Details) - USD ($) $ in Thousands |
Dec. 31, 2021 |
Dec. 31, 2020 |
Dec. 31, 2019 |
|---|---|---|---|
| Deferred tax assets: | |||
| Net operating loss | $ 46,886 | $ 28,422 | $ 20,336 |
| Research and development credits | 2,411 | 1,631 | 1,400 |
| Depreciation and amortization | 0 | 14 | 33 |
| Stock based compensation | 2,126 | 653 | 119 |
| Accruals and other | 719 | 422 | 194 |
| Operating lease liability | 1,935 | 0 | 0 |
| Deferred revenue | 340 | 0 | 0 |
| Total deferred tax assets | 54,417 | 31,142 | 22,082 |
| Deferred tax liabilities: | |||
| Depreciation and amortization | (32) | 0 | 0 |
| Operating lease right-of-use assets | (1,972) | 0 | 0 |
| Total deferred tax liabilities | (2,004) | 0 | 0 |
| Net deferred tax assets before valuation allowance | 52,413 | 31,142 | 22,082 |
| Less: valuation allowance | (52,413) | (31,142) | (22,082) |
| Net deferred tax assets | $ 0 | $ 0 | $ 0 |