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Financial instruments and financial risk management - Market risk, Currency risk, sensitivity analyses (Details) - Currency risk
$ in Thousands
6 Months Ended
Jun. 30, 2023
USD ($)
Financial instruments and financial risk management  
Percentage of reasonably possible increase (decrease) in risk assumption 10.00%
Australian Dollar  
Financial instruments and financial risk management  
Increase (decrease) in profit and loss due to reasonably possible increase (decrease) in designated risk component $ 2,471
Other  
Financial instruments and financial risk management  
Increase (decrease) in profit and loss due to reasonably possible increase (decrease) in designated risk component $ 2