Earnings/(loss) per share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Disclosure of comparative information prepared under previous GAAP [line items]
Loss for the year net of tax attributable to ordinary equity holders of the parent for basic earnings	$ 29,634	$ (20,010)	$ 53,063	$ (31,798)
Weighted average number of ordinary shares for basic and diluted earnings per share	197,971,371	176,584,343	197,971,371	176,584,343
Earnings/(loss) per share:
Loss attributable to ordinary equity holders of the parent, US$	$ 0.15	$ (0.11)	$ 0.27	$ (0.18)

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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Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table.

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