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

Note 10 - Commitments and Contingencies (Details Textual)

v3.25.1
Note 10 - Commitments and Contingencies (Details Textual)
1 Months Ended 12 Months Ended
Mar. 19, 2024
USD ($)
$ / shares
shares
Mar. 12, 2024
shares
Jan. 31, 2025
shares
Sep. 30, 2024
USD ($)
shares
Jun. 30, 2024
USD ($)
shares
May 31, 2024
USD ($)
$ / shares
shares
May 31, 2018
USD ($)
Dec. 31, 2024
USD ($)
ft²
$ / shares
shares
Dec. 31, 2023
USD ($)
shares
Aug. 31, 2024
shares
Dec. 22, 2023
Operating Lease, Expense               $ 141,000 $ 163,000    
Stock Issued During Period, Shares, New Issues | shares     262,501         262,501      
Director [Member]                      
Consulting Agreement, Monthly Payment             $ 7,500        
Consulting Agreement, Renewal Period             1 year        
Director [Member] | Consulting Fees [Member]                      
Related Party Transaction, Amounts of Transaction               $ 90,000 $ 90,000    
Certain Claims Arising From an Interpretation of Certain Rights of SPA [Member]                      
Stock Issued During Period, Shares, New Issues | shares 500,000 500,000             760,000    
Shares Issued, Price Per Share (in dollars per share) | $ / shares $ 1.85                    
Stock Issued During Period, Value, New Issues $ 924,000                    
Litigation Settlement, Fee Expense               $ 164,000      
Measurement Input, Risk Free Interest Rate [Member]                      
Warrants and Rights Outstanding, Measurement Input                 0.0384    
Measurement Input, Price Volatility [Member]                      
Warrants and Rights Outstanding, Measurement Input               1.01     0.98
Series AA Preferred Additional Investment Rights [Member]                      
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Period Increase (Decrease)       $ 70,000 $ 294,000            
Class of Warrant or Right, Exchanged During Period (in shares) | shares       3,336,293 3,215,232 642,962       667,289  
Minimum [Member] | Measurement Input, Risk Free Interest Rate [Member]                      
Warrants and Rights Outstanding, Measurement Input               0.0427      
Minimum [Member] | Measurement Input, Expected Term [Member]                      
Warrants and Rights Outstanding, Measurement Input               2.71 4.5    
Maximum [Member] | Measurement Input, Risk Free Interest Rate [Member]                      
Warrants and Rights Outstanding, Measurement Input               0.0438      
Maximum [Member] | Measurement Input, Expected Term [Member]                      
Warrants and Rights Outstanding, Measurement Input               4.74 5    
Pioneer Capital Anstalt [Member] | Restricted Stock [Member]                      
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period | shares           550,000          
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Granted, Aggregate Intrinsic Value           $ 516,000          
Pioneer Capital Anstalt [Member] | Series AA Preferred Additional Investment Rights [Member]                      
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Period Increase (Decrease)               $ 213,000      
Class of Warrant or Right, Exchanged During Period (in shares) | shares           372,610   1,863,049      
Pioneer Capital Anstalt [Member] | Series AA Preferred Additional Investment Rights [Member] | Measurement Input, Share Price [Member]                      
Warrants and Rights Outstanding, Measurement Input           0.86          
Pioneer Capital Anstalt [Member] | Series AA Preferred Additional Investment Rights [Member]                      
Preferred Stock, Extension Period of Exercise               6 months      
Pioneer Capital Anstalt [Member] | Minimum [Member] | Series AA Preferred Additional Investment Rights [Member] | Measurement Input, Conversion Price [Member]                      
Warrants and Rights Outstanding, Measurement Input           1.886          
Pioneer Capital Anstalt [Member] | Minimum [Member] | Series AA Preferred Additional Investment Rights [Member] | Measurement Input, Risk Free Interest Rate [Member]                      
Warrants and Rights Outstanding, Measurement Input           0.0513          
Pioneer Capital Anstalt [Member] | Minimum [Member] | Series AA Preferred Additional Investment Rights [Member] | Measurement Input, Expected Term [Member]                      
Warrants and Rights Outstanding, Measurement Input           0.52          
Pioneer Capital Anstalt [Member] | Minimum [Member] | Series AA Preferred Additional Investment Rights [Member] | Measurement Input, Price Volatility [Member]                      
Warrants and Rights Outstanding, Measurement Input           0.80          
Pioneer Capital Anstalt [Member] | Minimum [Member] | Series AA Preferred Additional Investment Rights [Member]                      
Preferred Stock, Convertible, Conversion Price | $ / shares           $ 9.43          
Preferred Stock, Convertible, Conversion Price Floor | $ / shares           $ 1.886          
Pioneer Capital Anstalt [Member] | Maximum [Member] | Series AA Preferred Additional Investment Rights [Member] | Measurement Input, Conversion Price [Member]                      
Warrants and Rights Outstanding, Measurement Input           13.04          
Pioneer Capital Anstalt [Member] | Maximum [Member] | Series AA Preferred Additional Investment Rights [Member] | Measurement Input, Risk Free Interest Rate [Member]                      
Warrants and Rights Outstanding, Measurement Input           0.0536          
Pioneer Capital Anstalt [Member] | Maximum [Member] | Series AA Preferred Additional Investment Rights [Member] | Measurement Input, Expected Term [Member]                      
Warrants and Rights Outstanding, Measurement Input           1.02          
Pioneer Capital Anstalt [Member] | Maximum [Member] | Series AA Preferred Additional Investment Rights [Member] | Measurement Input, Price Volatility [Member]                      
Warrants and Rights Outstanding, Measurement Input           0.93          
Pioneer Capital Anstalt [Member] | Maximum [Member] | Series AA Preferred Additional Investment Rights [Member]                      
Preferred Stock, Convertible, Conversion Price | $ / shares           $ 13.04          
Preferred Stock, Convertible, Conversion Price Floor | $ / shares               $ 2.608      
Office Space [Member]                      
Area of Real Estate Property | ft²               1,550      
Operating Lease, Monthly Payments               $ 7,000