Stock-based Compensation - Stock-based Compensation Expense (Details) - USD ($) $ in Thousands |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Sep. 30, 2020 |
Sep. 30, 2019 |
Sep. 30, 2020 |
Sep. 30, 2019 |
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| Share-based compensation expense | ||||
| Stock-based compensation expense | $ 708 | $ 1,494 | $ 3,269 | $ 4,233 |
| Research and development | ||||
| Share-based compensation expense | ||||
| Stock-based compensation expense | 66 | 174 | ||
| General and administrative | ||||
| Share-based compensation expense | ||||
| Stock-based compensation expense | $ 708 | $ 1,428 | $ 3,269 | $ 4,059 |
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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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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
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