5. Risk Management (Details Narrative) - BRL (R$) R$ in Thousands	12 Months Ended
Dec. 31, 2018	Dec. 31, 2017
Risk Management Details Narrative Abstract
Total exposure	R$ 6,694,912	R$ 5,702,375
Effects on results before taxes	669,491	570,238
Effects on profit for the year before taxes	R$ 92,188	R$ 87,133
Leverage ratio	34.00%	36.00%
Financial instrument assets receivables from related parties	R$ 843,250	R$ 815,160
Reimbursement of additional retirement and pension plan	R$ 737,503	R$ 709,208

The amount that best represents the maximum exposure to credit risk without taking into account any collateral held or other credit enhancements (for example, netting agreements that do not qualify for offset in accordance with IAS 32). [Refer: Credit risk [member]]

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Note Expiry date 2021-01-01
-Name IFRS
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