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19 SHAREHOLDERS' EQUITY (Details 2) - BRL (R$) R$ / shares in Units, R$ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2019 | Dec. 31, 2018
Treasury share purchased |  | 7,409,500 |
Amount paid for treasury share |  | R$ 58,264 | R$ 58,264
Treasury share market price | [1] | R$ 104,548 |
Bottom of Range [Member] |  |  |
Share price |  | R$ 4.48 |
Average [Member] |  |  |
Share price |  | 7.86 |
Top of Range [Member] |  |  |
Share price |  | R$ 10.07 |
[1] | The average quotation as of December 31, 2019 in the amount R$ 14.11 per share was used.

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