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Financial instruments (Details 8) - USD ($) $ in Thousands | Dec. 31, 2019 | Jan. 01, 2019 | Dec. 31, 2018
--- | --- | --- | ---
Financial instruments [Line Items] |  |  |
Current lease liabilities | $ 7,694 |  |
Non-current lease liabilities | 30,203 |  |
Lease liabilities | 37,897 | $ 45,115 | $ 0
Buildings [member] |  |  |
Financial instruments [Line Items] |  |  |
Current lease liabilities | 2,887 |  |
Non-current lease liabilities | 23,299 |  |
Lease liabilities | 26,186 |  | 0
Vehicles [Member] |  |  |
Financial instruments [Line Items] |  |  |
Current lease liabilities | 852 |  |
Non-current lease liabilities | 2,530 |  |
Lease liabilities | 3,382 |  | 0
Machinery [member] |  |  |
Financial instruments [Line Items] |  |  |
Current lease liabilities | 3,955 |  |
Non-current lease liabilities | 4,374 |  |
Lease liabilities | 8,329 |  | $ 0
Not later than one month [member] |  |  |
Financial instruments [Line Items] |  |  |
Current lease liabilities | 659 |  |
Not later than one month [member] | Buildings [member] |  |  |
Financial instruments [Line Items] |  |  |
Current lease liabilities | 262 |  |
Not later than one month [member] | Vehicles [Member] |  |  |
Financial instruments [Line Items] |  |  |
Current lease liabilities | 70 |  |
Not later than one month [member] | Machinery [member] |  |  |
Financial instruments [Line Items] |  |  |
Current lease liabilities | 327 |  |
Later than one month and not later than three months [member] |  |  |
Financial instruments [Line Items] |  |  |
Current lease liabilities | 1,999 |  |
Later than one month and not later than three months [member] | Buildings [member] |  |  |
Financial instruments [Line Items] |  |  |
Current lease liabilities | 795 |  |
Later than one month and not later than three months [member] | Vehicles [Member] |  |  |
Financial instruments [Line Items] |  |  |
Current lease liabilities | 211 |  |
Later than one month and not later than three months [member] | Machinery [member] |  |  |
Financial instruments [Line Items] |  |  |
Current lease liabilities | 993 |  |
Later than three months and not later than one year [member] |  |  |
Financial instruments [Line Items] |  |  |
Current lease liabilities | 5,036 |  |
Later than three months and not later than one year [member] | Buildings [member] |  |  |
Financial instruments [Line Items] |  |  |
Current lease liabilities | 1,830 |  |
Later than three months and not later than one year [member] | Vehicles [Member] |  |  |
Financial instruments [Line Items] |  |  |
Current lease liabilities | 571 |  |
Later than three months and not later than one year [member] | Machinery [member] |  |  |
Financial instruments [Line Items] |  |  |
Current lease liabilities | 2,635 |  |
Less than 1 year [member] |  |  |
Financial instruments [Line Items] |  |  |
Non-current lease liabilities | 20,030 |  |
Less than 1 year [member] | Buildings [member] |  |  |
Financial instruments [Line Items] |  |  |
Non-current lease liabilities | 13,507 |  |
Less than 1 year [member] | Vehicles [Member] |  |  |
Financial instruments [Line Items] |  |  |
Non-current lease liabilities | 2,530 |  |
Less than 1 year [member] | Machinery [member] |  |  |
Financial instruments [Line Items] |  |  |
Non-current lease liabilities | 3,993 |  |
Later than five years [member] |  |  |
Financial instruments [Line Items] |  |  |
Non-current lease liabilities | 10,173 |  |
Later than five years [member] | Buildings [member] |  |  |
Financial instruments [Line Items] |  |  |
Non-current lease liabilities | 9,792 |  |
Later than five years [member] | Vehicles [Member] |  |  |
Financial instruments [Line Items] |  |  |
Non-current lease liabilities | 0 |  |
Later than five years [member] | Machinery [member] |  |  |
Financial instruments [Line Items] |  |  |
Non-current lease liabilities | $ 381 |  |

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- Definition The amount of current lease liabilities. [Refer: Lease liabilities] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 16 -IssueDate 2019-01-01 -Paragraph 47 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2019-en-r&anchor=para_47_b&doctype=Standard -URIDate 2019-03-27 + Details
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- Definition The amount of liabilities related to the entity's leases. Lease is a contract, or part of a contract, that conveys the right to use an underlying asset for a period of time in exchange for consideration. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 16 -IssueDate 2019-01-01 -Paragraph 47 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2019-en-r&anchor=para_47_b&doctype=Standard -URIDate 2019-03-27 + Details
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- Definition The amount of non-current lease liabilities. [Refer: Lease liabilities] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 16 -IssueDate 2019-01-01 -Paragraph 47 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2019-en-r&anchor=para_47_b&doctype=Standard -URIDate 2019-03-27 + Details
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- References No definition available. + Details
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