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23. SHAREHOLDERS' EQUITY (Details 1) R$ in Thousands | 12 Months Ended
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Dec. 31, 2020 BRL (R$) R$ / shares shares
Disclosure of classes of share capital [line items] |
Authorized quantity | 2,400,000,000
Buyback program [member] |
Disclosure of classes of share capital [line items] |
Board's Authorization | 04/20/2018
Authorized quantity | 30,391,000
Program Period | From 4/20/2018 to 4/30/2018
Average buyback price | R$ / shares |
Minimum and maximum buyback price | R$ |
Sale of shares | R$ | R$ 22,981,500
Balance in treasury | 7,409,500

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