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Employee benefits - Additional Information (Details) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | Jul. 01, 2005
IFRS Statement [Line Items] |  |  |  |
Labour And Social Welfare | $ 707 | $ 1,489 | $ 1,655 |
Wages and salaries | 88,149 | 80,617 | 91,822 |
Percentage Of Wages Contribution To Employee |  |  |  | 6.00%
Post-employment benefit expense, defined contribution plans | 20 |  |  |
Deposits from banks | 3,952 |  |  |
Defined Contribution Plans [Member] |  |  |  |
IFRS Statement [Line Items] |  |  |  |
Other Foreign Subsidiaries Pension Expenses | 497 | 434 | 253 |
Wages and salaries | $ 3,330 | $ 3,316 | $ 3,527 |

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- Definition The amount of deposit liabilities from banks held by the entity. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2020-01-01 -Paragraph 55 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_55&doctype=Standard -URIDate 2020-01-01 + Details
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- Definition The amount of post-employment benefit expense relating to defined contribution plans. Defined contribution plans are post-employment benefit plans under which an entity pays fixed contributions into a separate entity (a fund) and will have no legal or constructive obligation to pay further contributions if the fund does not hold sufficient assets to pay all employee benefits relating to employee service in the current and prior periods. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 19 -IssueDate 2020-01-01 -Paragraph 53 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=19&code=ifrs-tx-2020-en-r&anchor=para_53&doctype=Standard -URIDate 2020-01-01 + Details
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