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23. FINANCIAL INSTRUMENTS AND RISK MANAGEMENT (Details 2)
R$ in Thousands
 12 Months Ended
Dec. 31, 2020
BRL (R$)
DisclosureOfFinancialInstrumentsAndRisksManagementLineItems [Line Items]  
Fair value R$ (14,649)
Non-designated as derivative instruments [member]  
DisclosureOfFinancialInstrumentsAndRisksManagementLineItems [Line Items]  
Maturity 2nd Qtr. 2021
Assets USD + 2.80% p.a.
Liabilities CDI + 2.27% p.a.
Notional R$ 49,900
Fair value R$ (14,649)