Trade and other receivables (Details) - USD ($) $ in Thousands |
Jun. 30, 2019 |
Dec. 31, 2018 |
|---|---|---|
| Trade and other receivables [Abstract] | ||
| Trade receivables | $ 229,061 | $ 163,856 |
| Tax receivables | 37,333 | 54,959 |
| Prepayments | 16,636 | 5,521 |
| Other accounts receivable | 9,010 | 12,059 |
| Total | $ 292,040 | $ 236,395 |
| X | ||||||||||
- Definition The amount of current prepayments. [Refer: Prepayments] Reference 1: http://www.xbrl.org/2003/role/exampleRef
|
| X | ||||||||||
- Definition The amount of current receivables from taxes other than income tax. [Refer: Receivables from taxes other than income tax] Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- Definition The amount of current trade receivables. [Refer: Trade receivables] Reference 1: http://www.xbrl.org/2003/role/exampleRef
|
| X | ||||||||||
- Definition The amount of current other receivables. [Refer: Other receivables] Reference 1: http://www.xbrl.org/2003/role/exampleRef
|
| X | ||||||||||
- Definition The amount of current trade receivables and current other receivables. [Refer: Current trade receivables; Other current receivables] Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- References No definition available.
|