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Summary of Significant Accounting Policies (Details)
oz in Thousands
12 Months Ended
Nov. 09, 2017
Dec. 31, 2018
USD ($)
oz
Dec. 31, 2017
USD ($)
Dec. 31, 2016
USD ($)
Feb. 26, 2019
USD ($)
Dec. 31, 2015
USD ($)
Property, Plant and Equipment [Line Items]            
Annual targeted production rate of gold-equivalent ounces | oz   20        
Accumulated deficit   $ 232,085,170 $ 222,604,417      
Net Loss   9,480,753 10,576,178 $ 12,964,704    
Net cash used in operating activities   4,027,142 6,534,310 2,597,933    
Cash and cash equivalents   488,657 2,066,718 $ 184,359   $ 1,663,170
Current assets   8,564,262 7,731,508      
Current liabilities   2,389,722 $ 1,109,485      
Working capital   $ 6,200,000        
Reverse stock split conversion ratio 0.2          
Building | Minimum            
Property, Plant and Equipment [Line Items]            
Estimated economic life   7 years        
Building | Maximum            
Property, Plant and Equipment [Line Items]            
Estimated economic life   15 years        
Vehicles and equipment | Minimum            
Property, Plant and Equipment [Line Items]            
Estimated economic life   3 years        
Vehicles and equipment | Maximum            
Property, Plant and Equipment [Line Items]            
Estimated economic life   7 years        
Processing and laboratory | Minimum            
Property, Plant and Equipment [Line Items]            
Estimated economic life   5 years        
Processing and laboratory | Maximum            
Property, Plant and Equipment [Line Items]            
Estimated economic life   15 years        
Furniture and fixtures | Minimum            
Property, Plant and Equipment [Line Items]            
Estimated economic life   2 years        
Furniture and fixtures | Maximum            
Property, Plant and Equipment [Line Items]            
Estimated economic life   3 years        
Subsequent Event | Murray FO | 2019 Equity Agreement            
Property, Plant and Equipment [Line Items]            
Authorized amount of stock available for sale         $ 5,000,000  
Authorized amount of stock available for sale, net of transaction fees         $ 4,900,000  
Line of Credit            
Property, Plant and Equipment [Line Items]            
Maximum borrowing capacity   $ 10,000,000.0        
Available borrowing capacity   $ 9,500,000