Share-based compensation - Options Granted to Nonemployees (Details) - Nonemployees - USD ($) $ in Thousands |
3 Months Ended | |
|---|---|---|
Mar. 31, 2017 |
Mar. 31, 2016 |
|
| Share based compensation | ||
| Number of options granted outstanding (in shares) | 3,224,600 | |
| Share based payment expense (benefit) | $ 205 | $ (314) |
| X | ||||||||||
- Definition Represents the expense (benefit) recognized during the period arising from equity-based compensation arrangements with nonemployees. No definition available.
|
| X | ||||||||||
- References No definition available.
|
| X | ||||||||||
- Definition Number of options outstanding, including both vested and non-vested options. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Details
|