Share based compensation - Unrecognized Compensation Cost (Details) $ in Thousands |
12 Months Ended |
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Dec. 31, 2017
USD ($)
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| Share based compensation | |
| Unrecognized compensation cost | $ 10,086 |
| Expected weighted-average cost recognition period (in years) | 2 years 10 months 24 days |
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- References No definition available.
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- Definition Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Unrecognized cost of unvested options awarded to employees as compensation. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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