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Mineral Property - Capitalized Development Costs (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Notes to Financial Statements
Development expenditures	$ 543,000	$ 601,000	$ 1,383,000	$ 1,369,000
Capitalized interest	161,000	184,000	463,000	557,000
Property payments		75,000	100,000	175,000
Capitalized depreciation	4,000	7,000	20,000	23,000
Total capitalized costs	$ 708,000	$ 867,000	$ 1,966,000	$ 2,124,000