Annual report pursuant to Section 13 and 15(d)

Note 9 - Investments (Details Textual)

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Note 9 - Investments (Details Textual) - USD ($)
 3 Months Ended 12 Months Ended
Feb. 15, 2021
Mar. 31, 2022
Dec. 31, 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 Noncontrolling Owners   12.00%  
LiNiCo [Member] | Comstock Mining Inc. [Member]      
Ownership Percentage 88.00%    
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, Exercised During Period (in shares)   500  
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    
Investment Owned, Balance, Shares (in shares)   2,000