Earnings per share

12 Months Ended

Dec. 31, 2017

Disclosure of earning per share [Abstract]

Disclosure of earnings per share [text block]

Note 19 Earnings per share

Amounts in US$ '000 except for shares	2017		2016		2015
Numerator:
Loss for the year attributable to owners		(24,228)		(49,092)		(234,031)
Denominator:
Weighted average number of shares used in basic EPS		60,093,191		59,777,145		57,759,001
(Losses) after tax per share (US$) – basic		(0.40)		(0.82)		(4.05)

Amounts in US$ '000 except for shares	2017  (a)		2016		2015
Weighted average number of shares used in basic EPS		60,093,191		59,777,145		57,759,001
Effect of dilutive potential common shares (a)
Weighted average number of common shares for the purposes of diluted earnings per shares		60,093,191		59,777,145		57,759,001
(Losses) after tax per share (US$) – diluted		(0.40)		(0.82)		(4.05)

^(a) For the year ended 31 December 2017, there were 4,564,777 (1,390,706 in 2016 and 1,032,279 in 2015) of potential shares that could have a dilutive impact but were considered antidilutive due to negative earnings.