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Related Parties - Summarized Changes of Number of Restricted and Performance Shares Granted (Detail) R$ in Thousands | 12 Months Ended
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Dec. 31, 2020 shares BRL (R$) | Dec. 31, 2019 BRL (R$) shares
Summary of related parties [line items] |  |
Beginning Balance | 1,738,660 | 739,952
Shares granted | shares | 2,910,162 |
Cancellation of granted shares due to termination of executive employment | shares | (353,294) | (9,168)
Cancellation of performance shares | shares | (52,992) |
Ending Balance | 2,910,162 | 1,738,660
April 3, 2019 [member] |  |
Summary of related parties [line items] |  |
Shares granted |  | 567,876
September 2, 2019 [member] |  |
Summary of related parties [line items] |  |
Shares granted |  | 440,000
April 1, 2020 [member] |  |
Summary of related parties [line items] |  |
Shares granted | 877,788 |
September 16, 2020 [member] |  |
Summary of related parties [line items] |  |
Shares granted | 700,000 |

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- Definition The number of other equity instruments (ie other than share options) granted in a share-based payment arrangement. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 2 -IssueDate 2019-01-01 -Paragraph 47 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2019-en-r&anchor=para_47_b&doctype=Standard -URIDate 2019-03-27 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Name IFRS -Number 2 -IssueDate 2019-01-01 -Paragraph 45 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2019-en-r&anchor=para_45&doctype=Standard -URIDate 2019-03-27 + Details
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- Definition The number of other equity instruments (ie other than share options) outstanding in a share-based payment arrangement. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IFRS -Number 2 -IssueDate 2019-01-01 -Paragraph 45 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2019-en-r&anchor=para_45&doctype=Standard -URIDate 2019-03-27 + Details
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- Definition Number of instruments other equity instruments cancellation of granted shares due to termination of executive employment. + References No definition available. + Details
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- Definition The number of instruments other equity instruments cancellation of performance shares during the period. + References No definition available. + Details
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