Share-based compensation - Share-based Compensation Expense (Details) - USD ($) $ in Thousands |
12 Months Ended | |
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Dec. 31, 2019 |
Dec. 31, 2018 |
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| Total share-based compensation expense included in the consolidated statements of operations | ||
| Total share-based compensation expense | $ 11,053 | $ 16,202 |
| Research and development | ||
| Total share-based compensation expense included in the consolidated statements of operations | ||
| Total share-based compensation expense | 3,812 | 8,340 |
| General and administrative | ||
| Total share-based compensation expense included in the consolidated statements of operations | ||
| Total share-based compensation expense | $ 7,241 | $ 7,862 |
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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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- References No definition available.
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