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Long-Term Reclamation Liability and Retirement Obligation Asset (Reconciliation of Aggregate Retirement Asset) (Details) (USD $)
6 Months Ended 12 Months Ended
Jun. 30, 2014
Dec. 31, 2013
Asset Retirement Obligation, Roll Forward Analysis [Roll Forward]    
Retirement obligation asset - beginning of period $ 2,491,956 $ 2,803,318
Additional obligations incurred 0 531,770
Amortization of retirement obligation asset (502,810) (843,132)
Retirement obligation asset - end of period $ 1,989,146 $ 2,491,956