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Taxation - Provision for Consolidated Income Tax (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Income Taxes [Abstract]      
Current income tax $ (4,338) $ (2,840) $ 666
Deferred income tax (39,499) (9,485) (21,486)
Income tax expense $ (43,837) $ (12,325) $ (20,820)