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Employee benefits - Additional Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Jul. 01, 2005
IFRS Statement [Line Items]
Labour And Social Welfare	$ 1,489	$ 1,655	$ 1,523
Wages and salaries	80,617	91,822	89,911
Percentage Of Wages Contribution To Employee				6.00%
Post-employment benefit expense, defined contribution plans	57
Deposits from banks	$ 3,730
Percentage of Company Contributes Towards Wages and Salaries	2.00%
Defined Contribution Plans [Member]
IFRS Statement [Line Items]
Other Foreign Subsidiaries Pension Expenses	$ 434	253	178
Wages and salaries	$ 3,316	$ 3,527	$ 3,367

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

It represents of employee benefits expenses.

+ References

No definition available.

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- Definition

It represents of Other foreign subsidiaries recognized pension expenses during period.

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No definition available.

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- Definition

The percentage of company contributes towards wages and salaries every month.

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- Definition

company make contribution to employees monthly wages percentage

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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 2019-01-01
-Paragraph 55
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2019-en-r&anchor=para_55&doctype=Standard
-URIDate 2019-03-27

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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 2019-01-01
-Paragraph 53
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=19&code=ifrs-tx-2019-en-r&anchor=para_53&doctype=Standard
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- Definition

A class of employee benefits expense that represents wages and salaries. [Refer: Employee benefits expense]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 19
-IssueDate 2019-01-01
-Paragraph 9
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