Quarterly report [Sections 13 or 15(d)]

Note 2 - Summary of Significant Accounting Policies - Reconciliation of Net Loss (Details)

v3.25.3
Note 2 - Summary of Significant Accounting Policies - Reconciliation of Net Loss (Details) - USD ($)
 1 Months Ended 3 Months Ended 9 Months Ended
Jul. 31, 2025
Sep. 30, 2025
Sep. 30, 2024
Sep. 30, 2025
Sep. 30, 2024
Net loss   $ (3,562,000) $ (3,632,000) $ (10,575,000) $ (11,347,000)
Deemed dividend on Series AA, AAA and AAA Junior preferred stock – down round $ 308,000 (308,000) 0 (308,000) 0
Deemed dividend on exchange of Series AA, AAA and AAA Junior Preferred Stock for Series B Preferred Stock       (7,685,000)  
Preferred Dividends paid in shares of common stock   (271,000) (1,694,000) (372,000) (3,290,000)
Net income (loss) attributable to common stockholders   3,544,000 (5,326,000) (3,570,000) (14,637,000)
Net loss attributable to common stockholders - diluted   (4,141,000) (5,326,000) (3,570,000) (14,637,000)
Series AA, AAA and AAA Junior Convertible Preferred Stock [Member]          
Deemed dividend on exchange of Series AA, AAA and AAA Junior Preferred Stock for Series B Preferred Stock   7,685,000 0 7,685,000 0
Deemed dividend on exchange of Series AA, AAA and AAA Junior Preferred Stock for Series B Preferred Stock   $ (7,685,000) $ 0 $ 0 $ 0