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Long-Term Reclamation Liability and Retirement Obligation Asset (Tables)
 12 Months Ended
Dec. 31, 2012
Long-Term Reclamation Liability and Retirement Obligation Asset [Abstract]  
Schedule of Other Noncurrent Liabilities
    2012     2011     2010  
Long-term reclamation liability - beginning of period   $ 2,007,605     $ 1,332,730     $ 1,186,966  
Additional obligations incurred     2,405,314       577,529       58,447  
Accretion of reclamation liability     184,237       97,346       87,317  
Long-term reclamation liability - end of period   $ 4,597,156     $ 2,007,605     $ 1,332,730  
Schedule of Asset Retirement Obligations
    2012     2011     2010  
Retirement obligation asset - beginning of period   $ 825,481     $ 339,357     $ 340,159  
Additional obligations incurred     2,405,314       577,529       58,447  
Amortization of retirement obligation asset     (427,477 )     (91,405 )     (59,249 )
Retirement obligation asset - end of period   $ 2,803,318     $ 825,481     $ 339,357