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Bank loans (Tables) | 12 Months Ended
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Dec. 31, 2017
Disclosure Of Bank Loans [Abstract] |
Disclosure of detailed information about borrowings [text block] | The movement of bank loans for the years 2017, 2016 and 2015 is presented below:
|  | 2017 |  | 2016 |  | 2015 |
|  | US$(000) |  | US$(000) |  | US$(000) |
Beginning balance |  |  | 55,000 |  |  | 285,302 |  |  | 40,000 |
New loans |  |  | 341,215 |  |  | 200,500 |  |  | 344,503 |
Disbursements |  |  | (300,000) |  |  | (442,957) |  |  | (90,000) |
Exchange difference |  |  | - |  |  | 12,155 |  |  | (9,201) |
Final balance |  |  | 96,215 |  |  | 55,000 |  |  | 285,302 |

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- Definition The disclosure of detailed information about borrowings. [Refer: Borrowings] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IFRS -Number 7 -IssueDate 2017-01-01 -Paragraph 7 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=7&date=2017-03-01&anchor=para_7&doctype=Standard -URIDate 2017-03-09 + Details
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