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Schedule of currencies used in sensitivity analysis (Details) - BRL (R$) R$ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
IfrsStatementLineItems [Line Items] |  |  |
Cash and cash equivalents | R$ (296,480) | R$ 101,833 | R$ 880,949
Currency risk [member] | Exposure [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Cash and cash equivalents | 23,228 |  |
Currency risk [member] | Increase in Foreign Currency Sensitivity +10% [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Cash and cash equivalents | 2,323 |  |
Currency risk [member] | Decrease in Foreign Currency Sensitivity -10% [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Cash and cash equivalents | R$ (2,323) |  |

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