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Mineral Properties - Mt. Todd, Northern Territory, Australia (Details) - USD ($)
$ in Thousands
1 Months Ended
Mar. 31, 2006
Sep. 30, 2023
Dec. 31, 2022
Property, Plant and Equipment [Line Items]      
Mineral Properties, Net   $ 2,146 $ 2,146
Mt Todd, Australia      
Property, Plant and Equipment [Line Items]      
Mineral Properties, Net   $ 2,146 $ 2,146
Acquisition Costs, Period Cost $ 2,146