Mineral Properties - Acquisitions (Details) - USD ($) $ in Thousands |
1 Months Ended | 3 Months Ended | 9 Months Ended | 12 Months Ended |
|---|---|---|---|---|
Dec. 31, 2013 |
Sep. 30, 2014 |
Sep. 30, 2014 |
Dec. 31, 2005 |
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| Write-off of mineral properties | $ 329 | $ 422 | ||
| Nfu Wyoming Llc [Member] | ||||
| Percentage of asset acquired | 100.00% | |||
| Aggregate consideration | $ 20,000 | |||
| Pathfinder Mines Corporation [Member] | ||||
| Aggregate consideration | $ 6,600 | |||
| Production royalty (as a percent) | 5.00% | |||
| Estimated asset reclamation obligation | $ 5,700 | |||
| Deferred tax liabilities | 3,300 | |||
| Mineral properties | $ 15,300 |
| X | ||||||||||
- Definition This element represents that Mineral Properties Acquired Percentage. No definition available.
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- Definition Represents the percentage of royalty exists with respect to future production of uranium on mining claims. No definition available.
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- Definition Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount of deferred tax liability attributable to taxable temporary differences due after one year or the normal operating cycle, if longer, assumed at the acquisition date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount of other liabilities due after one year or the normal operating cycle, if longer, assumed at the acquisition date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition The amount of property, plant, and equipment recognized as of the acquisition date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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