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21 Loans and Financing (Details Narrative) - BRL (R$)
R$ in Thousands
 12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Disclosure of detailed information about borrowings [line items]    
Description of securites term The term of these securities ranges from 1 to 52 months from the end of the reporting period.  
National Treasury Department [Member]    
Disclosure of detailed information about borrowings [line items]    
Description of securites term 2024.04.11  
National Treasury Department [Member] | Par Bonds [Member] | Collateral [Member]    
Disclosure of detailed information about borrowings [line items]    
Cash deposits R$ 57,968 R$ 52,717
National Treasury Department [Member] | Discount Bonds [Member] | Collateral [Member]    
Disclosure of detailed information about borrowings [line items]    
Cash deposits R$ 40,465 R$ 36,838