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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
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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

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