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18. SHARE-BASED PAYMENT (Details Narrative) - BRL (R$)
R$ / shares in Units, R$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Disclosure of terms and conditions of share-based payment arrangement [line items]    
Weighted average exercise price R$ 63.92 R$ 60.96
Weighted average remaining vesting 5 months 17 months
Amount recognized expenses R$ 45,219 R$ 38,424
Capital reserve R$ 142,080 R$ 192,845
Weighted average fair value of the outstanding options R$ 4.84 R$ 10.03
Fair value of share-based compensatio R$ 223,191 R$ 223,011
Non-current liabilities R$ 21,521 R$ 11,761
Bottom of range [member]    
Disclosure of terms and conditions of share-based payment arrangement [line items]    
Weighted average remaining vesting 1 year  
Increasing the limit of grants 0.50%  
Top Of Range [member]    
Disclosure of terms and conditions of share-based payment arrangement [line items]    
Weighted average remaining vesting 4 years  
Increasing the limit of grants 2.50%