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SHAREHOLDERS' EQUITY - Treasury shares (Details) - BRL (R$) R$ / shares in Units, R$ in Thousands | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2018 | Dec. 31, 2019 | Dec. 31, 2017
SHAREHOLDERS' EQUITY |  |  |
Quantity | 12,042,044 | 12,042,044 | 13,842,004
Average cost per share | R$ 18.13 | R$ 18.13 | R$ 17.42
Historical value | R$ 218,265 | R$ 218,265 | R$ 241,088
Market value | R$ 458,560 | R$ 477,827 | R$ 258,797
Quantity, Sale | (1,800,000) |  |
Average cost per share, Sale | R$ 12.68 |  |
Historical value, Sale | R$ (22,823) |  |
Market value, Sale | R$ (66,636) |  |

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- Definition Represents the market value of treasury shares. + References No definition available. + Details
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- Definition Number of common and preferred shares that were previously issued and that were repurchased by the issuing entity and held in treasury on the financial statement date. + References No definition available. + Details
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