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15 Taxes in installments (Details) - BRL (R$) R$ in Thousands | Dec. 31, 2019 | Dec. 31, 2018
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Disclosure of fair value measurement of liabilities [line items] |  |
Federal REFIS debts and other tax installment payment plans, current | R$ 19,498 | R$ 20,179
Federal REFIS debts and other tax installment payment plans, noncurrent | 67,727 | 73,934
Federal REFIS Law 11.941/09 [Member] |  |
Disclosure of fair value measurement of liabilities [line items] |  |
Federal REFIS debts and other tax installment payment plans, current | 12,172 | 12,100
Federal REFIS debts and other tax installment payment plans, noncurrent | 17,436 | 18,895
Federal REFIS Law 12.865/13 [Member] |  |
Disclosure of fair value measurement of liabilities [line items] |  |
Federal REFIS debts and other tax installment payment plans, current | 6,481 | 6,240
Federal REFIS debts and other tax installment payment plans, noncurrent | 48,306 | 52,661
Other Taxes In Installments [Member] |  |
Disclosure of fair value measurement of liabilities [line items] |  |
Federal REFIS debts and other tax installment payment plans, current | 845 | 1,839
Federal REFIS debts and other tax installment payment plans, noncurrent | R$ 1,985 | R$ 2,378

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