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Plant And Equipment (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Property, Plant and Equipment [Line Items]
Cost	$ 11,071	$ 11,030
Accumulated depreciation	5,408	5,395
Net	5,663	5,635
Mt Todd, Australia
Property, Plant and Equipment [Line Items]
Cost	5,238	5,197
Accumulated depreciation	5,075	5,062
Net	163	135
Corporate, United States
Property, Plant and Equipment [Line Items]
Cost	333	333
Accumulated depreciation	333	333
Used mill equipment, Canada
Property, Plant and Equipment [Line Items]
Cost	5,500	5,500
Net	$ 5,500	$ 5,500

X

- Definition

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

+ References

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- Definition

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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