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Schedule of bonds and securities (Details) - BRL (R$) R$ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2021 | Dec. 31, 2020
IfrsStatementLineItems [Line Items] |  |
Bonds and securities | R$ 361,058 | R$ 300,530
Bonds and securities, current | 16,121 | 1,465
Bonds and securities, noncurrent | R$ 344,937 | 299,065
Quotas In Funds [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Index | CDI |
Bonds and securities | R$ 284,852 | 237,141
Bank Deposit Certificates [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Index | 82% to 101% of CDI |
Bonds and securities | R$ 61,635 | 62,638
Financial Treasury Bonds [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Index | Selic |
Bonds and securities | R$ (0) | 751
National Treasury Bills [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Index | 10.92% p.y. |
Bonds and securities | R$ 14,571 | R$ (0)

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