Quarterly report [Sections 13 or 15(d)]

Note 5 - Debt - Schedule of Carrying Values and Estimated Fair Values of Debt Instruments (Details)

v3.26.1
Note 5 - Debt - Schedule of Carrying Values and Estimated Fair Values of Debt Instruments (Details) - USD ($)
 3 Months Ended 12 Months Ended
Mar. 28, 2025
Mar. 26, 2025
Feb. 10, 2025
Nov. 19, 2024
Mar. 31, 2026
Mar. 31, 2025
Nov. 08, 2025
Nov. 08, 2024
Cash paid for interest         $ 0 $ 801,000    
Change in fair value of debt         $ 0 495,000    
Agile Loan Agreement [Member]                
Cash paid for interest           563,000    
Interest expense during the three months ended March 31, 2025           536,000    
Accrued interest at March 31, 2025           0    
Change in fair value of debt [1]           (178,000)    
Debt issue costs [2]             $ 180,000  
Debt Instrument, Interest Rate, Stated Percentage               42.00%
Debt Instrument, Discount Rate               42.00%
Agile II Note [Member]                
Cash paid for interest           230,000    
Interest expense during the three months ended March 31, 2025           230,000    
Accrued interest at March 31, 2025     $ 1,050,000.00     0    
Change in fair value of debt [1]           (97,000)    
Debt issue costs [2]     $ 125,000          
Debt Instrument, Interest Rate, Stated Percentage     42.00%          
Debt Instrument, Discount Rate     42.00%          
Belleau Purchase Agreement [Member]                
Cash paid for interest           0    
Interest expense during the three months ended March 31, 2025           0    
Accrued interest at March 31, 2025           0    
Change in fair value of debt [1]           (2,000)    
Debt issue costs [2] $ 0              
Debt Instrument, Interest Rate, Stated Percentage 20.00%              
Debt Instrument, Discount Rate 42.00%              
Diagonal Note [Member]                
Cash paid for interest           0    
Interest expense during the three months ended March 31, 2025           0    
Accrued interest at March 31, 2025           0    
Change in fair value of debt [1]           0    
Debt issue costs [2]   $ 7,000            
Debt Instrument, Interest Rate, Stated Percentage   10.00%            
Debt Instrument, Discount Rate   42.00%            
RP Note [Member]                
Cash paid for interest           0    
Interest expense during the three months ended March 31, 2025           148,000    
Accrued interest at March 31, 2025           219,000    
Change in fair value of debt [1]           $ 156,000    
Debt issue costs [2]       $ 0        
Debt Instrument, Interest Rate, Stated Percentage       40.00%        
Debt Instrument, Discount Rate       42.00%        
[1] Reflected in interest expense in the condensed statements of comprehensive loss.
[2] 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 expense” in the condensed statements of comprehensive loss.