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Accrued Expenses (Details) - USD ($)
Dec. 31, 2017
Dec. 31, 2016
Payables and Accruals [Abstract]    
Accrued Northern Comstock Joint Venture Contribution Obligations $ 180,833 $ 480,833
Accrued Board of Directors fees 84,000 290,600
Accrued vendor liabilities 75,415 121,081
Accrued payroll 57,402 60,735
Accrued personal property tax 84,264 56,895
Accrued production royalties 0 7,940
Other accrued expenses 14,737 117,850
Total accrued expenses $ 496,651 $ 1,135,934