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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)