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Provisions (Details) - USD ($)
$ in Thousands
 6 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Disclosure of other provisions [line items]    
Acquired through business combination $ 37,735  
Accretion 1,328  
Movements from foreign exchange impact (247)  
Net book value 30 June 2023 38,816  
Current 12,891  
Non-current 25,925  
Employee Entitlements    
Disclosure of other provisions [line items]    
Acquired through business combination 12,244  
Accretion 1,328  
Movements from foreign exchange impact (244)  
Net book value 30 June 2023 13,328  
Current 12,568  
Non-current 760  
Rehabilitation Costs    
Disclosure of other provisions [line items]    
Acquired through business combination 25,438  
Movements from foreign exchange impact (1)  
Net book value 30 June 2023 25,437  
Current 272  
Non-current $ 25,165  
Rehabilitation period 3 years  
Property holding costs period 10 years  
Percentage currency denominated in Australian dollars for calculating the discount rate applied in calculating the restoration and rehabilitation provision 100.00% 0.00%
Other    
Disclosure of other provisions [line items]    
Acquired through business combination $ 53  
Movements from foreign exchange impact (2)  
Net book value 30 June 2023 51  
Current $ 51