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Mineral Properties - Properties - Capitalized Development Costs (Details) (USD $) | 12 Months Ended
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Dec. 31, 2013 | Dec. 31, 2012
Notes to Financial Statements |  |
Development expenditures | $ 1,854,000 | $ 3,107,000
Capitalized interest | 726,000 |
Property payments | 174,000 | 325,000
Capitalized depreciation | 30,000 | 22,000
Total capitalized costs | $ 2,784,000 | $ 3,454,000

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