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8. Restricted cash (Details) - BRL (R$) R$ in Thousands	Dec. 31, 2017	Dec. 31, 2016
SummaryOfRestrictedCashLineItems [Line Items]
Restricted cash	R$ 18,822	R$ 24,078
Agreement with the Sao Paulo municipal government
SummaryOfRestrictedCashLineItems [Line Items]
Restricted cash	12,055	15,858
Brazilian Federal Savings - escrow deposit
SummaryOfRestrictedCashLineItems [Line Items]
Restricted cash	1,209	2,989
Other
SummaryOfRestrictedCashLineItems [Line Items]
Restricted cash	R$ 5,558	R$ 5,231

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- References

No definition available.

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- Definition

The amount of cash and cash equivalents whose use or withdrawal is restricted. [Refer: Cash and cash equivalents]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2017-01-01
-Paragraph 55
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2017-03-01&anchor=para_55&doctype=Standard
-URIDate 2017-03-09

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- Details

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- Details

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