20. SHAREHOLDERS' EQUITY (Details 2) - BRL (R$) R$ / shares in Units, R$ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Shareholders Equity Details 2Abstract
Treasury share purchased	7,409,500
Amount paid for treasury share	R$ 58,264	R$ 238,976
Minimum share price	R$ 4.48
Maximum share price	10.07
Average share price	R$ 7.86
Treasury share market price	R$ 65,500

An entity’s own equity instruments, held by the entity or other members of the consolidated group.

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Name IAS
-Number 1
-IssueDate 2018-01-01
-Paragraph 78
-Subparagraph e
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2018-03-01&anchor=para_78_e&doctype=Standard
-URIDate 2018-03-16

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 32
-IssueDate 2018-01-01
-Paragraph 34
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=32&date=2018-03-01&anchor=para_34&doctype=Standard
-URIDate 2018-03-16

Name:	ifrs-full_TreasuryShares
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant