Common Stock - Summary of Stock-Based Compensation (Details) - Stock Options - USD ($) $ in Thousands |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2020 |
Jun. 30, 2019 |
Jun. 30, 2020 |
Jun. 30, 2019 |
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| Stock-based compensation | $ 1,067 | $ 416 | $ 1,940 | $ 912 |
| Research and Development | ||||
| Stock-based compensation | 491 | 237 | 910 | 597 |
| General and Administrative Expense | ||||
| Stock-based compensation | $ 576 | $ 179 | $ 1,030 | $ 315 |
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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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