| CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (Parenthetical) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
| Sep. 30, 2017 | Sep. 30, 2016 | Sep. 30, 2017 | Sep. 30, 2016 | |
| CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS | ||||
| Operating expenses in relation to related parties, net of reimbursements | $ 67 | $ 523 | $ 781 | $ (1,852) | 
| X | ||||||||||
| 
- Definition Amount of purchases from a related party included within operating expenses for the period, net of amounts invoiced to the related party for reimbursements of expenditure. No definition available. 
 | 
| X | ||||||||||
| 
- References No definition available. 
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