Share-based compensation - Share-based Compensation Expense (Details) - USD ($) $ in Thousands |
6 Months Ended | 12 Months Ended | ||
|---|---|---|---|---|
Dec. 31, 2015 |
Dec. 31, 2017 |
Dec. 31, 2016 |
Jun. 30, 2015 |
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| Total share-based compensation expense included in the consolidated statements of operations | ||||
| Total share-based compensation expense | $ 3,568 | $ 10,804 | $ 8,821 | $ 7,078 |
| Research and development | ||||
| Total share-based compensation expense included in the consolidated statements of operations | ||||
| Total share-based compensation expense | 1,587 | 5,268 | 4,185 | 5,426 |
| General and administrative | ||||
| Total share-based compensation expense included in the consolidated statements of operations | ||||
| Total share-based compensation expense | $ 1,981 | $ 5,536 | $ 4,636 | $ 1,652 |
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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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