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

Note 7 - Stockholders' Equity and Equity-linked Instruments - Schedule of Warrant Activity (Details)

v3.25.1
Note 7 - Stockholders' Equity and Equity-linked Instruments - Schedule of Warrant Activity (Details) - USD ($)
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Beginning balance $ 1,571,000  
Change in fair value of warrant liability (1,115,000) $ (2,898,000)
Beginning balance 935,000 1,571,000
Series AAA-3 and AAA-4 Junior Preferred Stock Warrants [Member]    
Beginning balance 0 0
Initial fair value of warrant liability – grant date [1] 346,000 0
Change in fair value of warrant liability 2,000 0
Beginning balance 348,000 0
Warrants Issued With Placement Agent Agreement [Member]    
Beginning balance 1,571,000 0
Initial fair value of warrant liability – grant date [1] 133,000 4,469,000
Change in fair value of warrant liability (1,117,000) (2,898,000)
Beginning balance $ 587,000 $ 1,571,000
[1] Estimated fair value on the respective dates of issuance.