Annual report [Section 13 and 15(d), not S-K Item 405]

Note 2 - Summary of Significant Accounting Policies - Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share (Details)

v3.26.1
Note 2 - Summary of Significant Accounting Policies - Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share (Details) - shares
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Anti-dilutive securities excluded from computation of earnings per share (in shares) 3,517,835 46,168
Preferred Stock [Member]    
Anti-dilutive securities excluded from computation of earnings per share (in shares) 97,917 21,084
Options, Warrants, Restricted Stock Units [Member]    
Anti-dilutive securities excluded from computation of earnings per share (in shares) 538,167 7,584
PIPE Warrants [Member]    
Anti-dilutive securities excluded from computation of earnings per share (in shares) 1,666,667 0
Other Warrants [Member]    
Anti-dilutive securities excluded from computation of earnings per share (in shares) 1,215,084 0
Additional Investment Rights (AIRs) [Member]    
Anti-dilutive securities excluded from computation of earnings per share (in shares) 0 17,500