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

Note 6 - Debt - Schedule of Carrying Values and Estimated Fair Values of Debt Instruments (Details)

v3.26.1
Note 6 - Debt - Schedule of Carrying Values and Estimated Fair Values of Debt Instruments (Details) - USD ($)
 12 Months Ended
Jul. 10, 2025
May 12, 2025
Mar. 28, 2025
Mar. 26, 2025
Feb. 10, 2025
Nov. 19, 2024
Nov. 08, 2024
Dec. 31, 2025
Dec. 31, 2024
Interest paid during the year ended December 31, 2025               $ 1,274,000 $ 295,000
Change in fair value of debt               7,036,000 163,000
Debt Instrument, Discount Rate   42.00% 42.00% 42.00% 42.00% 42.00% 42.00%    
Purchase Agreement [Member]                  
Gross Proceeds $ 4,494,000                
Proceeds net of original issue discount 4,000,000                
Fair Value at issuance date 2,065,000             0 0
Note balance – December 31, 2024               0 0
Conversion to equity / payments on notes payable during the year ended December 31, 2025               4,607,000  
Interest paid during the year ended December 31, 2025               0  
Change in fair value of debt [1]               2,542,000  
Debt issue and extinguishment costs [2] $ 570,000                
Debt Instrument, Interest Rate, Stated Percentage 8.00%                
Purchase Agreement [Member] | YP Warrants [Member]                  
Fair Value allocated to Original YP Warrant liability $ 1,935,000                
Agile Loan Agreement [Member]                  
Gross Proceeds             $ 1,850,000    
Proceeds net of original issue discount             0    
Fair Value at issuance date             2,132,000 0 1,679,000
Difference between proceeds and fair value at issuance [1]             282,000    
Note balance – December 31, 2024               0 1,454,000
Conversion to equity / payments on notes payable during the year ended December 31, 2025               1,898,000  
Interest paid during the year ended December 31, 2025               563,000  
Change in fair value of debt [1]               (178,000)  
Debt issue and extinguishment costs [2]             $ 180,000    
Debt Instrument, Interest Rate, Stated Percentage             42.00%    
Agile II Note [Member]                  
Gross Proceeds         $ 2,500,000        
Proceeds net of original issue discount         0        
Fair Value at issuance date         3,205,000     0 0
Difference between proceeds and fair value at issuance [1]         705,000        
Note balance – December 31, 2024               0 0
Conversion to equity / payments on notes payable during the year ended December 31, 2025               2,846,000  
Interest paid during the year ended December 31, 2025               656,000  
Change in fair value of debt [1]               67,000  
Debt issue and extinguishment costs [2]         $ 125,000        
Debt Instrument, Interest Rate, Stated Percentage         42.00%        
Belleau Purchase Agreement [Member]                  
Gross Proceeds     $ 1,250,000            
Proceeds net of original issue discount     0            
Fair Value at issuance date     1,019,000         0 0
Difference between proceeds and fair value at issuance [1]     (231,000)            
Note balance – December 31, 2024               0 0
Conversion to equity / payments on notes payable during the year ended December 31, 2025               1,306,000  
Interest paid during the year ended December 31, 2025               0  
Change in fair value of debt [1]               56,000  
Debt issue and extinguishment costs [2]     $ 0            
Debt Instrument, Interest Rate, Stated Percentage     20.00%            
Diagonal Note [Member]                  
Gross Proceeds       $ 300,000          
Proceeds net of original issue discount       286,000          
Fair Value at issuance date       247,000       0 0
Difference between proceeds and fair value at issuance [1]       (39,000)          
Note balance – December 31, 2024               0 0
Conversion to equity / payments on notes payable during the year ended December 31, 2025               320,000  
Interest paid during the year ended December 31, 2025               0  
Change in fair value of debt [1]               72,000  
Debt issue and extinguishment costs [2]       $ 7,000          
Debt Instrument, Interest Rate, Stated Percentage       10.00%          
Diagonal II Note [Member]                  
Gross Proceeds   $ 145,000              
Proceeds net of original issue discount   132,000              
Fair Value at issuance date   123,000           0 0
Difference between proceeds and fair value at issuance [1]   (9,000)              
Note balance – December 31, 2024               0 0
Conversion to equity / payments on notes payable during the year ended December 31, 2025               157,000  
Interest paid during the year ended December 31, 2025               0  
Change in fair value of debt [1]               25,000  
Debt issue and extinguishment costs [2]   $ 7,000              
Debt Instrument, Interest Rate, Stated Percentage   10.00%              
RP Note [Member]                  
Gross Proceeds           $ 1,500,000      
Proceeds net of original issue discount           0      
Fair Value at issuance date           1,343,000   0 1,438,000
Difference between proceeds and fair value at issuance [1]           (157,000)      
Note balance – December 31, 2024               0 $ 1,500,000
Conversion to equity / payments on notes payable during the year ended December 31, 2025               1,474,000  
Interest paid during the year ended December 31, 2025               0  
Change in fair value of debt [1]               $ 35,000  
Debt issue and extinguishment costs [2]           $ 0      
Debt Instrument, Interest Rate, Stated Percentage           40.00%      
[1] Reflected in interest expense in the statements of operations.
[2] Debt issue costs incurred in connection with the YP Note included legal fees and advisor fees. Debt issue costs incurred in connection with the Agile Loan included administrative fee of $92,500 to the collateral agent and advisor fees. Debt issuance costs are reflected in “other income (expense)” in the statements of operations.