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Earnings per share ("EPS") (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Earnings per share ("EPS") [Abstract]
Antidilutive convertible instruments excluded from the weighted average number of ordinary shares (in shares)			17,282,925
Components of calculation of basic EPS and diluted EPS [Abstract]
Profit/(loss) for the period used for calculation of EPS - basic	$ 73,679	$ (46,927)	$ 6,602
Interest and amortization on the convertible notes	12,177	0	0
Profit/(loss) for the period used for calculation of EPS - dilutive	$ 85,856	$ (46,927)	$ 6,602
Basic earnings per share [Abstract]
Weighted average shares outstanding - basic (in shares)	143,437,164	143,429,610	124,536,338
Diluted earnings per share [Abstract]
Weighted average shares outstanding - basic (in shares)	143,437,164	143,429,610	124,536,338
Dilutive equity awards (in shares)	133,342	5,311	0
Dilutive shares related to convertible notes (in shares)	24,589,370	0	0
Weighted average shares outstanding - dilutive (in shares)	168,159,876	143,434,921	124,536,338

X

- Definition

The number of convertible instruments that could potentially dilute basic earnings per share in the future, but were not included in the calculation of diluted earnings per share because they are antidilutive for the period(s) presented.

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Amount of interest and amortization on convertible notes.

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- Definition

The weighted average number of ordinary shares outstanding plus the weighted average number of ordinary shares that would be issued on the conversion of all the dilutive potential ordinary shares into ordinary shares. [Refer: Ordinary shares [member]; Weighted average [member]]

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The number of dilutive potential ordinary shares that relate to the assumed conversion of the entity's convertible instruments.

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The profit (loss) attributable to ordinary equity holders of the parent entity. [Refer: Profit (loss)]

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The profit (loss) attributable to ordinary equity holders of the parent entity, adjusted for the effects of all dilutive potential ordinary shares. [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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