Quarterly report [Sections 13 or 15(d)]

Note 6 - Stockholders' Equity and Equity Linked Instruments - Schedule of Dividends (Details)

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Note 6 - Stockholders' Equity and Equity Linked Instruments - Schedule of Dividends (Details) - USD ($)
 1 Months Ended 3 Months Ended 9 Months Ended 12 Months Ended
Jun. 30, 2024
Sep. 30, 2025
Jun. 30, 2025
Mar. 31, 2025
Sep. 30, 2024
Jun. 30, 2024
Mar. 31, 2024
Sep. 30, 2025
Dec. 31, 2024
Dividend Shares (in shares)               96,828 63,821
Fair Value Shares Issued $ 729,000             $ 372,000 $ 3,290,000
Series A-5 Preferred Stock [Member]                  
Dividend Shares (in shares)       54     55    
Fair Value Shares Issued [1]       $ 1,000     $ 4,000    
Series A A Preferred Stock [Member]                  
Dividend Shares (in shares)     6,359   3,972 11,907      
Fair Value Shares Issued     $ 89,000   $ 216,000 $ 661,000      
Series AA-3 Convertible Preferred Stock [Member]                  
Dividend Shares (in shares)     66   964 1,029      
Fair Value Shares Issued     $ 1,000   $ 52,000 $ 60,000      
Series AA-4 Convertible Preferred Stock [Member]                  
Dividend Shares (in shares)     1,348   41 1,388      
Fair Value Shares Issued     $ 9,000   $ 2,000 $ 77,000      
Series AA-5 Convertible Preferred Stock [Member]                  
Dividend Shares (in shares)     118   1,180 1,298      
Fair Value Shares Issued     $ 1,000   $ 64,000 $ 65,000      
Series AAA Convertible Preferred Stock [Member]                  
Dividend Shares (in shares)         10,801        
Fair Value Shares Issued         $ 587,000        
Series AAA-2 Convertible Preferred Stock [Member]                  
Dividend Shares (in shares)         12,258        
Fair Value Shares Issued         $ 666,000        
Series AAA and AAA-2 Convertible Preferred Stock [Member]                  
Dividend Shares (in shares)   88,883           88,883  
Fair Value Shares Accrued   $ 271,000           $ 271,000  
Series AAA Junior Preferred Stock [Member]                  
Dividend Shares (in shares)         4,840        
Fair Value Shares Issued         $ 273,000        
Series AAA Junior Preferred Stock [Member] | O2024Q31 Dividends [Member]                  
Dividend Shares (in shares)         4,840        
Fair Value Shares Issued         $ 240,000        
Series AAA Junior Preferred Stock [Member] | O2024Q32 Dividends [Member]                  
Dividend Shares (in shares)         4,840        
Fair Value Shares Issued         $ 126,000        
Series AAA-2 Junior Convertible Preferred Stock [Member]                  
Dividend Shares (in shares)         2,204        
Fair Value Shares Issued         $ 97,000        
Series AAA-2 Junior Convertible Preferred Stock [Member] | O2024Q31 Dividends [Member]                  
Dividend Shares (in shares)         2,204        
Fair Value Shares Issued         $ 100,000        
[1] Fair valued based on the closing price of the Company’s common stock on the respective common stock dividend payment or accrual date.