Quarterly report pursuant to Section 13 or 15(d)

Note 4 - Note Receivable (Details Textual)

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Note 4 - Note Receivable (Details Textual) - USD ($)
 3 Months Ended 12 Months Ended
Feb. 15, 2021
Mar. 31, 2024
Mar. 31, 2022
Dec. 31, 2023
LiNiCo [Member]        
Equity Securities without Readily Determinable Fair Value, Impairment Loss, Annual Amount       $ 1,400,000
Receivable, Investment, Sale       $ 600,000
Increase (Decrease) in Notes Receivables   $ (150,000)    
LiNiCo [Member]        
Subsidiary, Ownership Percentage, Noncontrolling Owner     12.00%  
LiNiCo [Member] | Series A Preferred Stock [Member]        
Stock Issued During Period, Shares, Equity Method Invesment (in shares) 375,000      
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 Warrant, Term (Year) 3 years      
Investment Warrant, Exercised During Period (in shares)     500  
Investment Owned, Balance, Shares (in shares)     2,000  
Investment Owned, Fair Value     $ 2,000,000