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Advances from Joint Venture Partners - Disclosure of detailed information about joint operations (Details) - USD ($)
$ in Thousands
Dec. 31, 2023
Dec. 31, 2022
Exploration And Evaluation Assets By Geography [Line Items]    
Advances from joint venture partners (Note 8) $ 994 $ 1,703
U.S.A.    
Exploration And Evaluation Assets By Geography [Line Items]    
Advances from joint venture partners (Note 8) 975 1,670
Sweden and Norway    
Exploration And Evaluation Assets By Geography [Line Items]    
Advances from joint venture partners (Note 8) $ 19 $ 33