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Taxation - Disclosure of unrecognized deferred tax assets (Details) - USD ($)
$ in Thousands
Dec. 31, 2022
Dec. 31, 2021
Gross Amount    
Unrecognized deferred tax assets [Line Items]    
Deductible Temporary Difference $ 132,145 $ 59,925
Tax Losses 219,466 215,425
Tax Credits 11,101 9,636
Total 362,712 284,986
Tax Effected    
Unrecognized deferred tax assets [Line Items]    
Deductible Temporary Difference 33,544 16,224
Tax Losses 48,317 46,982
Tax Credits 11,101 9,636
Total $ 92,962 $ 72,843