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
9 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Antidilutive securities (in shares) 1,968,428 1,968,747
Restricted Stock Units (RSUs) [Member]    
Antidilutive securities (in shares) 532 851
Deferred Restricted Stock Units [Member]    
Antidilutive securities (in shares) 235,000 235,000
Warrant [Member]    
Antidilutive securities (in shares) 1,476,200 1,476,200
Share-Based Payment Arrangement, Option [Member]    
Antidilutive securities (in shares) 256,474 256,474
Class A Preferred Shares [Member]    
Antidilutive securities (in shares) [1] 222 222
[1] Class A preferred shares are presented on an as-if converted basis.