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Related parties (Details Narrative) - BRL (R$) R$ in Thousands |  |  |  | 12 Months Ended
--- | --- | --- | --- | ---
Oct. 30, 2019 | Sep. 06, 2018 | Apr. 25, 2018 | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
R V L Esteves Gestao Imobiliaria S A [Member] |  |  |  |  |  |
Reserve Quantities [Line Items] |  |  |  |  |  |
Lease expenses |  |  |  |  |  | R$ 417
Lease Agreements 1 [Member] |  |  |  |  |  |
Reserve Quantities [Line Items] |  |  |  |  |  |
Lease term |  |  |  | 20 years |  |
Renewal term |  |  |  | 20 years |  |
Lease Agreements 1 [Member] | R V L Esteves Gestao Imobiliaria S A [Member] |  |  |  |  |  |
Reserve Quantities [Line Items] |  |  |  |  |  |
Lease expenses |  |  |  | R$ 15,336 | R$ 11,288 | 40
Lease Agreements 1 [Member] | R V L Esteves Gestao Imobiliaria S A [Member] | Instituto Tocantinense Presidente Antonio Carlos S.A. (ITPAC ) [Member] |  |  |  |  |  |
Reserve Quantities [Line Items] |  |  |  |  |  |
Percentage of revenue |  | 7.50% |  |  |  |
Lease Agreements 1 [Member] | R V L Esteves Gestao Imobiliaria S A [Member] | Instituto De Ensino Superior Presidente Trancredo De Almeida Neves S.A. (IPTAN) [Member] |  |  |  |  |  |
Reserve Quantities [Line Items] |  |  |  |  |  |
Description of lease term | (i) up to June 2022, R$40; (ii) after June 2022 and until December 2028, 6.5% of the monthly net revenue of ITPAC |  |  |  |  |
Lease Agreements 1 [Member] | U N I V A C O Patrimonial Ltda [Member] |  |  |  |  |  |
Reserve Quantities [Line Items] |  |  |  |  |  |
Percentage of revenue |  |  |  | 6.50% |  |
Renewal term |  |  |  | 20 years |  |
Lease expenses |  |  |  | R$ 3,210 | 2,915 | 2,816
Lease Agreements 1 [Member] | I E S V A P Patrimonial Ltda [Member] |  |  |  |  |  |
Reserve Quantities [Line Items] |  |  |  |  |  |
Lease term |  |  | 20 years |  |  |
Percentage of revenue |  |  | 7.50% |  |  |
Renewal term |  |  | 20 years |  |  |
Lease expenses |  |  |  | R$ 4,560 | R$ 3,470 | R$ 2,609
Description of lease term |  |  | The lease agreement is for an amount equal to 7.5% of the monthly net revenue of IESVAP during 2018 |  |  |

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