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Schedule of payroll social charges and accruals (Details) - BRL (R$) R$ in Thousands | Dec. 31, 2021 | Dec. 31, 2020
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IfrsStatementLineItems [Line Items] |  |
Payroll, social charges and accruals | R$ 604,810 | R$ 684,046
Social Security Liabilities [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Payroll, social charges and accruals | 64,037 | 72,490
Social Security Liabilities [Member] | Taxes And Social Contribution [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Payroll, social charges and accruals | 46,245 | 42,748
Social Security Liabilities [Member] | Social Security Charges On Paid Vacation And 13th Salary [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Payroll, social charges and accruals | 17,792 | 29,742
Labor Liabilities [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Payroll, social charges and accruals | 540,773 | 611,556
Labor Liabilities [Member] | Vacation [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Payroll, social charges and accruals | 107,471 | 100,175
Labor Liabilities [Member] | Provisions By Performances And Profit Sharing [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Payroll, social charges and accruals | 364,701 | 483,110
Labor Liabilities [Member] | Voluntary Retirement Program [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Payroll, social charges and accruals | 68,601 | 28,071
Labor Liabilities [Member] | Other Liabilitites [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Payroll, social charges and accruals | R$ (0) | R$ 200

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