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Plant and Equipment (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2022
Property, Plant and Equipment [Line Items]
Cost	$ 5,692	$ 5,697
Accumulated depreciation	5,459	5,504
Net	233	193
Impairment charge	5,500
Mt Todd, Australia
Property, Plant and Equipment [Line Items]
Cost	5,359	5,364
Accumulated depreciation	5,126	5,171
Net	233	193
Corporate, United States
Property, Plant and Equipment [Line Items]
Cost	333	333
Accumulated depreciation	333	333
Net	0	0
Used mill equipment, Canada
Property, Plant and Equipment [Line Items]
Cost	0	0
Accumulated depreciation	0	0
Net	$ 0	$ 0

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- Definition

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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