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Share-based payment arrangements - Summary of share-based payments expense (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Disclosure of terms and conditions of share-based payment arrangement [line items]    
Expense from share-based payment transactions $ 10,744 $ 7,945
Share options    
Disclosure of terms and conditions of share-based payment arrangement [line items]    
Expense from share-based payment transactions 4,376 2,806
Restricted share units with no performance criteria    
Disclosure of terms and conditions of share-based payment arrangement [line items]    
Expense from share-based payment transactions 1,620 1,291
Restricted share units with performance criteria    
Disclosure of terms and conditions of share-based payment arrangement [line items]    
Expense from share-based payment transactions 2,545 3,462
Deferred units    
Disclosure of terms and conditions of share-based payment arrangement [line items]    
Expense from share-based payment transactions 144 (516)
Performance share units    
Disclosure of terms and conditions of share-based payment arrangement [line items]    
Expense from share-based payment transactions $ 2,059 $ 902