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Shareholders' equity - Summary of Share Capital (Detail) - USD ($)
$ / shares in Units, $ in Thousands
Dec. 31, 2021
Jun. 30, 2021
Dec. 31, 2020
Disclosure of classes of share capital [abstract]      
Number of ordinary nominative shares 191,028,642   170,981,476
Par value $ 0.0001 $ 0.0001 $ 0.0001
Total share capital $ 19   $ 17