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Financial assets and financial liabilities (Details 6) - BRL (R$) R$ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Notes and other explanatory information [abstract] |  |  |
Notes payable beginning | R$ 62,176 | R$ 72,726 | R$ 76,181
Payments | (49,347) | (12,000) | (9,800)
Payments of interest | (15,529) | (3,008) | (1,268)
Monetary indexation | 2,700 | 4,458 | 7,613
Notes payable ending |  | 62,176 | 72,726
Current |  | 62,176 | 14,478
Non-current |  |  | R$ 58,248

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