Results for the year - Net income (loss) per share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2017 |
Dec. 31, 2016 |
Dec. 31, 2015 |
|
| Results for the year | |||
| Annulment of ordinary shares (as a percent) | 80.00% | ||
| Premium (as a percent) | 15.00% | ||
| Share split (ratio) | 11.5 | ||
| Net income (loss) attributable to ordinary shareholders of the Parent used for computing basic and diluted net income (loss) per share | $ 917,093 | $ (33,336) | $ (37,004) |
| Weighted average number of ordinary shares used for basic per share amounts | 380,133 | 540,650 | 537,614 |
| Dilutive effect of outstanding options, warrants and deferred shares | 18,810 | ||
| Weighted average number of ordinary shares used for diluted per share amounts | 398,943 | 540,650 | 537,614 |
| Net income (loss) per share basic | $ 2.41 | $ (0.06) | $ (0.07) |
| Net income (loss) per share diluted | $ 2.30 | $ (0.06) | $ (0.07) |
| Anti-dilutive securities | 8,200 | 50,400 | 47,400 |