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17. Taxes recoverable/payable (Details) - BRL (R$) R$ in Thousands	Dec. 31, 2017	Dec. 31, 2016
SummaryOfTaxesRecoverablePayableLineItems [Line Items]
Current tax assets	R$ 276,585	R$ 42,633
Income tax and social contribution
SummaryOfTaxesRecoverablePayableLineItems [Line Items]
Current tax assets	270,614	32,365
Withholding income tax on financial investments For - IRRF
SummaryOfTaxesRecoverablePayableLineItems [Line Items]
Current tax assets	2,606	7,057
Other federal taxes
SummaryOfTaxesRecoverablePayableLineItems [Line Items]
Current tax assets	3,365	2,961
Other municipal taxes
SummaryOfTaxesRecoverablePayableLineItems [Line Items]
Current tax assets	R$ 0	R$ 250

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- References

No definition available.

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- Definition

The excess of amount paid for current tax in respect of current and prior periods over the amount due for those periods. Current tax is the amount of income taxes payable (recoverable) in respect of the taxable profit (tax loss) for a period.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
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-IssueDate 2017-01-01
-Paragraph 54
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-URIDate 2017-03-09

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