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Plant And Equipment (Details) (USD $) In Thousands, unless otherwise specified | 1 Months Ended | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | --- | ---
Jul. 31, 2014 | Sep. 30, 2013 | Sep. 30, 2014 | Sep. 30, 2013 | Dec. 31, 2013
Property, Plant and Equipment [Line Items] |  |  |  |  |
Cost |  |  | $ 5,903 |  | $ 6,273
Accumulated depreciation and write downs |  |  | 2,858 |  | 2,575
Net |  |  | 3,045 |  | 3,698
Impairment of mill equipment |  | 3,500 |  | 3,500 | 3,500
Mineral properties (Note 4) |  |  | 6,156 |  | 7,184
Percentage of interest in joint venture to be earn |  |  | 70.00% |  |
Period of payment |  |  | 3 years |  |
Increase to sale price of gold project | 250 |  |  |  |
Mt. Todd, Australia [Member] |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |
Cost |  |  | 5,483 |  | 5,476
Accumulated depreciation and write downs |  |  | 2,578 |  | 1,993
Net |  |  | 2,905 |  | 3,483
Guadalupe de los Reyes, Mexico [Member] |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |
Cost |  |  | 17 |  | 17
Accumulated depreciation and write downs |  |  | 7 |  | 5
Net |  |  | 10 |  | 12
Corporate, United States [Member] |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |
Cost |  |  | 403 |  | 780
Accumulated depreciation and write downs |  |  | 273 |  | 577
Net |  |  | 130 |  | 203
Assets Held-for-sale [Member] |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |
Accumulated depreciation and write downs |  |  |  |  | 3,500
Asset held for sale, cost |  |  | 6,500 |  | 10,000
Assets held for sale (mill equipment) |  |  | $ 6,500 |  | $ 6,500

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