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Related parties - Schedule of Key Management Compensation (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2023
Sep. 30, 2022
Sep. 30, 2023
Sep. 30, 2022
Related Party [Abstract]        
Salaries and other short-term employee costs $ 2,381 $ 2,177 $ 8,599 $ 6,383
Pension costs 17 47 248 251
Share-based compensation expense 1,823 8,011 8,535 20,460
Other compensation 32 7 103 25
Key management compensation $ 4,253 $ 10,242 $ 17,485 $ 27,119