Quarterly report pursuant to Section 13 or 15(d)

Note 8 - Investments (Details Textual)

v3.21.2
Note 8 - Investments (Details Textual) - USD ($)
 6 Months Ended
Feb. 15, 2021
Jun. 30, 2021
LiNiCo [Member]    
Series A Preferred Stock Purchase Agreement, Initial Sale of Stock (in shares) 375,000  
Series A Preferred Stock Purchase Agreement, Approximate Proceeds from Initial Sale of Stock $ 1,500,000  
Series A Preferred Stock Purchase Agreement, Approximate Proceeds from Aggregate Sale of Stock $ 232,000  
LiNiCo [Member]    
Noncontrolling Interest, Ownership Percentage by Parent 9.00%  
LiNiCo [Member] | Comstock Mining Inc. [Member]    
Ownership Percentage 50.00%  
Series A Preferred Stock [Member] | LiNiCo [Member]    
Preferred Stock, Dividend Rate, Percentage 8.00%  
Preferred Stock, Par or Stated Value Per Share (in dollars per share) $ 1,000  
LiNiCo [Member]    
Stock Issued During Period, Shares, Equity Method Invesment (in shares) 375,000 375,000
LiNiCo [Member] | Series A Warrant [Member]    
Investment Warrant, Term (Year) 3 years  
Investment Warrant, Number of Securities Called by Warrants or Rights (in shares) 500  
Investment Warrant, Exercise Price (in dollars per share) $ 1,000  
LiNiCo [Member] | Series A Preferred Stock [Member]    
Shares Received in Exchange of Common Stock Issued (in shares) 1,500  
Value of Shares Received in Exchange of Common Stock Issued $ 1,500,000