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Interim Financial Statements - Additional Information (Details)
oz in Thousands
 3 Months Ended 6 Months Ended
Apr. 03, 2018
USD ($)
Nov. 09, 2017
Jun. 30, 2018
USD ($)
Jun. 30, 2017
USD ($)
Jun. 30, 2018
USD ($)
oz
Jun. 30, 2017
USD ($)
Dec. 31, 2017
USD ($)
Dec. 31, 2016
USD ($)
Line of Credit Facility [Line Items]                
Expense reimbursements         $ 300,000      
Annual gold-equivalent production (in ounces) | oz         20      
Accumulated deficit     $ 227,504,653   $ 227,504,653   $ 222,604,417  
Net loss     2,415,332 $ 2,932,722 4,900,236 $ 5,706,903    
Net cash used in operating activities         2,183,677 3,613,933    
Cash and cash equivalents     1,469,429 $ 1,031,209 1,469,429 $ 1,031,209 2,066,718 $ 184,359
Current assets     7,542,080   7,542,080   7,731,508  
Current liabilities     1,583,291   1,583,291   $ 1,109,485  
Current assets in excess of current liabilities     5,900,000   5,900,000      
Unused borrowing capacity     7,000,000   7,000,000      
Reverse stock split conversion ratio   0.2            
Purchase Agreement | Leviston Resources LLC                
Line of Credit Facility [Line Items]                
Remaining amount available for issuance under agreement     $ 2,600,000   $ 2,600,000      
Tonogold Resources, Inc.                
Line of Credit Facility [Line Items]                
Payments made to the company $ 2,000,000              
Secured Debt | Senior Secured Debenture due 2021                
Line of Credit Facility [Line Items]                
Proceeds used to reduce indebtedness $ 1,500,000