EARNINGS / (LOSS) PER SHARE (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Basic earnings / (loss) per share
Earnings / (loss) attributable to owners of the parent	$ 181,935	$ 155,304	$ 69,220
Weighted average number of shares, basic (in shares)	606,407,693	606,407,693	546,559,599
Basic earnings / (loss) per share (US$) (in dollars per share)	$ 0.30002	$ 0.2561	$ 0.12665
Diluted earnings / (loss) per share
Earnings / (loss) attributable to owners of the parent	$ 181,935	$ 155,304	$ 69,220
Weighted average number of shares, basic (in shares)	606,407,693	606,407,693	546,559,599
Weighted average number of shares, diluted (in shares)	606,407,693	606,407,693	546,559,599
Diluted earnings / (loss) per share (US$) (in dollars per share)	$ 0.30002	$ 0.2561	$ 0.12665

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).

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
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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), both adjusted for the effects of all dilutive potential ordinary shares. [Refer: Ordinary shares [member]; Weighted average [member]]

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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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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
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-IssueDate 2018-01-01
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Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period.

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The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period.

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