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Plant and Equipment (Details) - USD ($) $ in Thousands | 1 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Mar. 31, 2024 | Dec. 31, 2024 | Dec. 31, 2023
Property, Plant and Equipment [Line Items] |  |  |
Cost |  | $ 6,035 | $ 5,718
Accumulated Depreciation |  | 5,553 | 5,514
Net |  | 482 | 204
Gain on sale of plant and equipment |  | 802 |
Proceeds from sale of plant and equipment |  | 802 |
Mt Todd, Australia |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Cost |  | 5,732 | 5,415
Accumulated Depreciation |  | 5,250 | 5,211
Net |  | 482 | 204
Corporate, United States |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Cost |  | 303 | 303
Accumulated Depreciation |  | 303 | 303
Net |  | $ 0 | $ 0
Used mill equipment, Canada |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Gain on sale of plant and equipment | $ 802 |  |
Proceeds from sale of plant and equipment | 900 |  |
Selling costs of plant and equipment | $ 98 |  |

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