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Earnings per share (Detail) - BRL (R$) R$ / shares in Units, shares in Thousands, R$ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Earnings per share [abstract] |  |  |
Profit attributable to shareholders of the Company | R$ 909,267 | R$ 478,781 | R$ 127,186
Weighted average number of outstanding common shares | 317,647,562 | 262,288,607 | 262,288,607
Basic earnings per share | R$ 2.8625 | R$ 1.8254 | R$ 0.4849
Profit used to determine diluted earnings per share | R$ 909,267 | R$ 478,781 | R$ 127,186
Weighted average number of outstanding common shares | 317,647,562 | 262,288,607 | 262,288,607
Weighted average number of shares under options | 2,581,716 |  |
Weighted average number of shares that would have been issued at average market price | (2,102,607) |  |
Adjusted number of shares | 318,126,671 | 262,288,607 | 262,288,607
Diluted earnings per share-R$ | R$ 2.8582 | R$ 1.8254 | R$ 0.4849

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- Definition The weighted average number of ordinary shares outstanding plus the weighted average number of ordinary shares that would be issued on the conversion of all the dilutive potential ordinary shares into ordinary shares. [Refer: Ordinary shares [member]; Weighted average [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 33 -IssueDate 2018-01-01 -Paragraph 70 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=33&date=2018-03-01&anchor=para_70_b&doctype=Standard -URIDate 2018-03-16 + Details
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- Definition Basic earnings (loss) per share from continuing operations. [Refer: Basic earnings (loss) per share; Continuing operations [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 33 -IssueDate 2018-01-01 -Paragraph 66 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=33&date=2018-03-01&anchor=para_66&doctype=Standard -URIDate 2018-03-16 + Details
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- Definition The amount of profit (loss) attributable to ordinary equity holders of the parent entity (the numerator), divided by the weighted average number of ordinary shares outstanding during the period (the denominator), both adjusted for the effects of all dilutive potential ordinary shares. [Refer: Ordinary shares [member]; Weighted average [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 33 -IssueDate 2018-01-01 -Paragraph 66 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=33&date=2018-03-01&anchor=para_66&doctype=Standard -URIDate 2018-03-16 + Details
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- Definition The number of dilutive potential ordinary shares that relate to the assumed conversion of the entity's convertible instruments. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 33 -IssueDate 2018-01-01 -Paragraph 70 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=33&date=2018-03-01&anchor=para_70_b&doctype=Standard -URIDate 2018-03-16 + Details
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- Definition The number of dilutive potential ordinary shares that relate to the assumed exercise of the entity's share options. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 33 -IssueDate 2018-01-01 -Paragraph 70 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=33&date=2018-03-01&anchor=para_70_b&doctype=Standard -URIDate 2018-03-16 + Details
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- Definition The profit (loss) from continuing and discontinued operations attributable to owners of the parent. [Refer: Profit (loss)] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2018-01-01 -Paragraph 81B -Subparagraph a -Clause ii -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2018-03-01&anchor=para_81B_a_ii&doctype=Standard -URIDate 2018-03-16 + Details
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- Definition The number of ordinary shares outstanding at the beginning of the period, adjusted by the number of ordinary shares bought back or issued during the period multiplied by a time-weighting factor. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 33 -IssueDate 2018-01-01 -Paragraph 70 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=33&date=2018-03-01&anchor=para_70_b&doctype=Standard -URIDate 2018-03-16 + Details
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