Common Stock - Summary of Stock-Based Compensation (Details) - Stock Options - USD ($) $ in Thousands |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Sep. 30, 2021 |
Sep. 30, 2020 |
Sep. 30, 2021 |
Sep. 30, 2020 |
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| Stock-based compensation | $ 1,508 | $ 1,127 | $ 4,203 | $ 3,067 |
| Research and Development | ||||
| Stock-based compensation | 683 | 539 | 2,003 | 1,449 |
| General and Administrative | ||||
| Stock-based compensation | $ 825 | $ 588 | $ 2,200 | $ 1,618 |
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- Definition Amount of expense for award under share-based payment arrangement. Excludes amount capitalized. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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