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EARNINGS (LOSS) PER SHARE - Basic earnings (losses) per share (Details) - BRL (R$) R$ / shares in Units, R$ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Basic earnings per share
Result of the year attributed to the controlling shareholders	R$ (2,817,518)	R$ 319,693	R$ 1,820,994
Weighted average number of shares in the year	1,361,264	1,105,826	1,106,297
Weighted average treasury shares	(12,042)	(12,333)	(14,597)
Weighted average number of outstanding shares	1,349,222	1,093,493	1,091,700
Basic loss per common share - RS	R$ (2.08825)	R$ 0.29236	R$ 1.66804

X

- Definition

The amount of profit (loss) attributable to ordinary equity holders of the parent entity (the numerator) divided by the weighted average number of ordinary shares outstanding during the period (the denominator).

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The profit (loss) from continuing and discontinued operations attributable to owners of the parent. [Refer: Profit (loss)]

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The number of ordinary shares outstanding at the beginning of the period, adjusted by the number of ordinary shares bought back or issued during the period multiplied by a time-weighting factor.

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The weighted average total number of shares issued throughout the period.

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Number of shares of treasury stock determined by relating the portion of time within a reporting period that treasury shares have been outstanding to the total time in that period. Treasury stock is stock that the Entity has issued but subsequently reacquired.

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