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Schedule of impact of forecast inflation on discounted cash flows (Details) - BRL (R$)
R$ in Thousands
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
IfrsStatementLineItems [Line Items]      
Lease liabilities R$ 212,734 R$ 138,361 R$ 96,604
Lease liabilities, percent 21.30%    
Right to use assets R$ 204,056 132,521  
Right to use assets, percent 18.36%    
Financial expense, percent 34.78%    
Depreciation expense R$ (49,748) R$ (51,489)  
Depreciation expense, percent 1249.00%    
At cost or in accordance with IFRS 16 within fair value model [member]      
IfrsStatementLineItems [Line Items]      
Lease liabilities R$ 212,734    
Right to use assets 204,056    
Financial expense 12,687    
Depreciation expense 46,468    
Inflation Projected Balance [Member]      
IfrsStatementLineItems [Line Items]      
Lease liabilities 258,038    
Right to use assets 241,514    
Financial expense 17,099    
Depreciation expense R$ 52,274