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21. PAYMENT TO SHAREHOLDERS (Details) - BRL (R$) R$ / shares in Units, R$ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Payment To Shareholders Details Abstract |  |  |
Profit for the year | R$ 5,074,136 | R$ 10,272 | R$ (934,747)
Absorption of deficits | (1,291,689) |  |
Legal reserve | (189,122) |  |
Allocation of profits | 3,593,325 |  |
Proposed destination: |  |  |
Mandatory minimum dividends | (898,332) |  |
Intended for statutory reserve of working capital | (2,694,993) |  |
In current liabilities |  |  |
Dividends to be paid on December 31, 2017 | 2,209 |  |
Mandatory minimum dividends | 898,332 |  |
Dividends to be paid on December 31, 2018 | R$ 900,541 | R$ 2,209 |
Weighted average number of shares | 1,373,251 |  |
Dividends per share approved | R$ 0.65416 |  |

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