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Bonds and financing - Schedule of bonds' description (Details 3)
R$ in Thousands
 12 Months Ended
Dec. 31, 2022
BRL (R$)
Bonds and financing  
Financials charges CDI
Bonds with Related Parties [member] | Bonds, 5th Issuance, 2nd series [member]  
Bonds and financing  
Date of issuance 08/15/2018
Maturity Date 08/15/2023
First payment after 60 months
Remuneration payment Semi-annual interest
Financials charges CDI + 1.00% p.a.
Principal amount R$ 100
Bonds with Related Parties [member] | Bonds, 9th Issuance, 2nd series [member]  
Bonds and financing  
Date of issuance 09/28/2022
Maturity Date 09/28/2025
First payment after 36 months
Remuneration payment Semi-annual interest
Financials charges CDI + 2.40% p.a.
Principal amount R$ 250
Bond [Member] | Bonds 1st Issuance Single Series [Member]  
Bonds and financing  
Date of issuance 08/06/2021
Maturity Date 08/05/2024
First payment after 35 months
Remuneration payment Semi-annual interest
Financials charges CDI + 2.30% p.a.
Principal amount R$ 500