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Earnings per share (Tables) | 12 Months Ended
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Dec. 31, 2021
Disclosure of earning per share [Abstract] |
Schedule of Earnings per Share | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
Amounts in US$ ‘000 except for shares | ​ | 2021 | ​ | 2020 | ​ | 2019
Numerator: Profit (Loss) for the year | ​ | 61,127 | ​ | (232,950) | ​ | 57,757
Denominator: Weighted average number of shares used in basic EPS | ​ | 60,901,109 | ​ | 60,668,185 | ​ | 60,217,523
Earnings (Losses) after tax per share (US$) – basic | ​ | 1.00 | ​ | (3.84) | ​ | 0.96
​
​ | ​ | ​ | ​ | ​ | ​ | ​
Amounts in US$ ‘000 except for shares | ​ | 2021 | ​ | 2020 | ​ | 2019
Weighted average number of shares used in basic EPS | ​ | 60,901,109 | ​ | 60,668,185 | ​ | 60,217,523
Effect of dilutive potential common shares (a) | ​ | ​ | ​ | ​ | ​ | ​
Stock awards at US$ 0.001 | ​ | 559,012 | ​ | — | ​ | 2,433,126
Weighted average number of common shares for the purposes of diluted earnings per shares | ​ | 61,460,121 | ​ | 60,668,185 | ​ | 62,650,649
Earnings (Losses) after tax per share (US$) – diluted | ​ | 0.99 | ​ | (3.84) | ​ | 0.92
(a) | For the year ended December 31, 2020, there were 974,159 potential shares that could have a dilutive impact. They were considered antidilutive due to negative earnings.

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