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Summary of Significant Accounting Policies (Details) (USD $)
 6 Months Ended 12 Months Ended
Jun. 30, 2012
Dollarsperbarrel
PerMMbtuofNaturalGas
Dec. 31, 2011
Oil & Gas properties [Abstract]    
Unproved $ 11,769,000 $ 17,098,000
Wells in progress 980,000 2,909,000
Proved 109,081,000 99,496,000
Oil & Gas properties 121,830,000 119,503,000
Less accumulated depreciation depletion and amortization (36,231,000) (28,561,000)
Net book value 85,599,000 90,942,000
Mining properties 20,739,000 20,739,000
Building, land and equipment 15,069,000 14,984,000
Less accumulated depreciation (6,092,000) (5,788,000)
Net book value 8,977,000 9,196,000
Net properties and equipment 115,315,000 120,877,000
Oil and Gas Properties [Abstract]    
Capitalized Costs, Proved Properties 12,700,000 20,000,000
Capitalized costs related to unevaluated properties are included in the amortization base 0 0
Period after which costs will be added to the full cost amortization pool for properties 2 years  
Percentage of discount used for future net revenue (in hundredths) 10.00%  
Period prior to the end of reporting period and costs 12 months  
Number of cost centers for quarterly ceiling test for oil and gas 1  
Price per barrel for oil at ceiling test (in dollars per barrel) 95.67  
Price per barrel for natural gas at ceiling test (in dollars per barrel) 3.13  
Mineral Properties [Abstract]    
Costs associated with Mount Emmons beginning of year 20,739,000 21,077,000
Development costs 0 16,000
Option payment from Thompson Creek 0 (354,000)
Costs at the end of the period $ 20,739,000 $ 20,739,000
Minimum [Member]
    
Property, Plant and Equipment [Line Items]    
Estimated useful lives 3 years  
Maximum [Member]
    
Property, Plant and Equipment [Line Items]    
Estimated useful lives 45 years