Quarterly report pursuant to Section 13 or 15(d)

Note 2 - Summary of Significant Accounting Policies (Details Textual)

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Note 2 - Summary of Significant Accounting Policies (Details Textual) - $ / shares
6 Months Ended
Jun. 30, 2024
Jun. 30, 2023
Dec. 31, 2023
Nov. 30, 2019
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount 1,763,733 1,636,006    
Prefunded Warrants [Member]        
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) $ 0.001   $ 0.001 $ 0.001