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Earnings per share (Tables) | 12 Months Ended
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Dec. 31, 2020
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Schedule of Computation of the Income (Loss) and Share Data Used in the Basic and Diluted Earnings Per Share | The computation of the (losses) income and share data used in the basic and diluted (loss) earnings per share is as follows:
|  | 2020 |  |  | 2019 |  |  | 2018 |
Basic earnings per share - |  |  |  |  |  |  |  |  |  |  |  |
Net (loss) income |  | $ | (607,062 | ) |  | $ | 247,002 |  |  | $ | 88,198 |
Weighted-average shares outstanding |  |  | 42,338 |  |  |  | 42,258 |  |  |  | 42,182 |
Non-vested dividend participating awards |  |  | 170 |  |  |  | 225 |  |  |  | 274 |
|  |  | 42,508 |  |  |  | 42,483 |  |  |  | 42,456 |
|  |  | (14.28 | ) |  |  | 5.81 |  |  |  | 2.08 |

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- Definition The disclosure of earnings per share. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 33 -IssueDate 2020-01-01 -Paragraph 66 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=33&code=ifrs-tx-2020-en-r&anchor=para_66&doctype=Standard -URIDate 2020-01-01 + Details
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