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Plant And Equipment (Details) (USD $) In Thousands, unless otherwise specified | 1 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | ---
Jul. 31, 2014 | Jun. 30, 2014 | Dec. 31, 2013
Property, Plant and Equipment [Line Items] |  |  |
Cost |  | $ 5,899 | $ 6,273
Accumulated depreciation and write downs |  | 2,638 | 2,575
Net |  | 3,261 | 3,698
Impairment of mill equipment |  |  | 3,500
Mineral properties (Note 4) |  | 7,004 | 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 |  | 5,479 | 5,476
Accumulated depreciation and write downs |  | 2,383 | 1,993
Net |  | 3,096 | 3,483
Guadalupe de los Reyes, Mexico [Member] |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Cost |  | 17 | 17
Accumulated depreciation and write downs |  | 6 | 5
Net |  | 11 | 12
Corporate, United States [Member] |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Cost |  | 403 | 780
Accumulated depreciation and write downs |  | 249 | 577
Net |  | 154 | 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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