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Exploration Contracts - Reconciliation of the Company's explorations contracts (Details)
$ in Thousands
 12 Months Ended
Dec. 31, 2024
USD ($)
Exploration Contracts  
Balance at the beginning $ 43,150
Termination of Marawa Agreement (199)
Balance at the end 42,951
NORI Contract  
Exploration Contracts  
Balance at the beginning 250
Balance at the end 250
Marawa Option Agreement  
Exploration Contracts  
Balance at the beginning 199
Termination of Marawa Agreement (199)
TOML Contract  
Exploration Contracts  
Balance at the beginning 42,701
Balance at the end $ 42,701