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Income taxes - Summary of unrecognized deferred tax assets (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019
Unrecognized Deferred Tax Assets |  |
Tax losses | $ 181,667 | $ 169,498
Other deductible temporary differences | 39,394 | 30,242
Total unrecognized deferred tax assets | $ 221,061 | $ 199,740

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- Definition Unrecognized deferred tax assets. + References No definition available. + Details
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- Definition Unrecognized deferred tax assets. + References No definition available. + Details
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- Definition The amount of deferred tax expense or income relating to the creation or reversal of temporary differences. [Refer: Temporary differences [member]; Deferred tax expense (income)] + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Name IAS -Number 12 -IssueDate 2020-01-01 -Paragraph 80 -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=12&code=ifrs-tx-2020-en-r&anchor=para_80_c&doctype=Standard -URIDate 2020-01-01 + Details
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- Definition The amount that represents the difference between the tax expense (income) and the product of the accounting profit multiplied by the applicable tax rate(s) that relates to tax losses. [Refer: Accounting profit] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 12 -IssueDate 2020-01-01 -Paragraph 81 -Subparagraph c -Clause i -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=12&code=ifrs-tx-2020-en-r&anchor=para_81_c_i&doctype=Standard -URIDate 2020-01-01 + Details
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