Quarterly report [Sections 13 or 15(d)]

Note 2 - Significant Accounting Policies - Antidilutive Securities (Details)

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Note 2 - Significant Accounting Policies - Antidilutive Securities (Details) - shares
3 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Antidilutive securities (in shares) 1,968,641 768,864
Restricted Stock Units (RSUs) [Member]    
Antidilutive securities (in shares) 744 1,028
Deferred Restricted Stock Units [Member]    
Antidilutive securities (in shares) 235,000 0
Warrant [Member]    
Antidilutive securities (in shares) 1,476,200 745,139
Share-Based Payment Arrangement, Option [Member]    
Antidilutive securities (in shares) 256,474 22,474
Class A Preferred Shares [Member]    
Antidilutive securities (in shares) [1] 223 223
[1] Class A preferred shares are presented on an as-if converted basis.