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Note 5 - Stockholders' Equity - Schedule of Stock Warrants (Details)
Mar. 31, 2024
$ / shares
shares
Number of Shares (in shares) 1,826,247
Warrants Expiration 1[Member]  
Number of Shares (in shares) 8,000
Exercise Price (in dollars per share) | $ / shares $ 6.21
Warrants Expiration 2 [Member]  
Number of Shares (in shares) 159,781
Exercise Price (in dollars per share) | $ / shares $ 75
Warrants Expiration 3 [Member]  
Number of Shares (in shares) 4,800
Exercise Price (in dollars per share) | $ / shares $ 103.13
Warrants Expiration 4 [Member]  
Number of Shares (in shares) 6,668
Exercise Price (in dollars per share) | $ / shares $ 195
Warrants Expiration 5 [Member]  
Number of Shares (in shares) 238,000
Exercise Price (in dollars per share) | $ / shares $ (0)
Warrants Expirations 6 [Member]  
Number of Shares (in shares) 1,408,998
Exercise Price (in dollars per share) | $ / shares $ 6.21