Share-based compensation - Share-based Compensation Expense (Details) - USD ($) $ in Thousands |
3 Months Ended | 6 Months Ended | ||
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Jun. 30, 2018 |
Jun. 30, 2017 |
Jun. 30, 2018 |
Jun. 30, 2017 |
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| Total share-based compensation expense included in the consolidated statements of operations | ||||
| Total share-based compensation expense | $ 4,079 | $ 2,072 | $ 8,411 | $ 4,757 |
| Research and development | ||||
| Total share-based compensation expense included in the consolidated statements of operations | ||||
| Total share-based compensation expense | 2,071 | 871 | 4,285 | 2,229 |
| General and administrative | ||||
| Total share-based compensation expense included in the consolidated statements of operations | ||||
| Total share-based compensation expense | $ 2,008 | $ 1,201 | $ 4,126 | $ 2,528 |
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- Definition Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- References No definition available.
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