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Long-Term Reclamation Liability and Retirement Obligation Asset (Reconciliation of Aggregate Retirement Liability) (Details) (USD $)
6 Months Ended 12 Months Ended
Jun. 30, 2014
Dec. 31, 2013
Mine Reclamation and Closing Liability [Roll Forward]    
Long-term reclamation liability - beginning of period $ 5,424,410 $ 4,597,156
Additional obligations incurred 0 531,770
Accretion of reclamation liability 171,943 295,484
Long-term reclamation liability - end of period $ 5,596,353 $ 5,424,410