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Cash and cash equivalents and financial investments (Details 1 - Textuals)
R$ in Thousands, $ in Thousands
12 Months Ended
Dec. 31, 2021
BRL (R$)
Dec. 31, 2020
BRL (R$)
Dec. 31, 2021
USD ($)
Cash and cash equivalents      
Financial investments R$ 798,786 R$ 0 $ 143,139
Interest rate of deposits 5.00%    
Interbank Deposit Certificate (CDI) | Bottom of range      
Cash and cash equivalents      
Percentage of interest rate 100.00% 97.00%  
Interbank Deposit Certificate (CDI) | Top of range      
Cash and cash equivalents      
Percentage of interest rate 103.00% 101.00%