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Schedule of aging of trade accounts receivable (Details) - BRL (R$)
R$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
IfrsStatementLineItems [Line Items]    
Trade receivable R$ 450,806 R$ 342,924
Current [member]    
IfrsStatementLineItems [Line Items]    
Trade receivable 68,932 44,365
Later Than One Months And Not Later Than Three Months [Member]    
IfrsStatementLineItems [Line Items]    
Trade receivable 69,299 57,198
Later than three months and not later than six months [member]    
IfrsStatementLineItems [Line Items]    
Trade receivable 55,764 51,521
Later Than One Eighty [Member]    
IfrsStatementLineItems [Line Items]    
Trade receivable 72,429 44,764
Financial assets neither past due nor impaired [member]    
IfrsStatementLineItems [Line Items]    
Trade receivable R$ 184,382 R$ 145,076