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Prepaid expenses (Details) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Prepaid expenses |  |
Prepaid energy services(b) | $ 25,692 | $ 26,582
Prepaid insurance | 15,794 | 13,568
Deferred costs of works for taxes | 4,855 | 4,138
Other prepaid expenses | 4,174 | 2,373
Prepaid expenses | 50,515 | 46,661
Classification by maturity: |  |
Current portion | 25,709 | 20,969
Non-current portion | 24,806 | 25,692
Prepaid expenses | $ 50,515 | $ 46,661

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- Definition The amount of prepayments for deferred costs of works for taxes. + References No definition available. + Details
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- References No definition available. + Details
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- Definition The amount of prepayments for other expenses. + References No definition available. + Details
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- Definition The amount of prepayments for insurances. + References No definition available. + Details
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- Definition The amount recognised as a current asset for expenditures made prior to the period when the economic benefit will be realised. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2020-01-01 -Paragraph 112 -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_112_c&doctype=Standard -URIDate 2020-01-01 + Details
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- Definition The amount of non-current prepayments for leases. [Refer: Non-current prepayments] + 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 Receivables that represent amounts paid for goods and services before they have been delivered. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Name IAS -Number 1 -IssueDate 2020-01-01 -Paragraph 78 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_78_b&doctype=Standard -URIDate 2020-01-01 + Details
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