Quarterly report [Sections 13 or 15(d)]

Note 9 - Notes Payable, Net (Details Textual)

v3.26.1
Note 9 - Notes Payable, Net (Details Textual) - USD ($)
$ in Thousands
1 Months Ended 3 Months Ended
Sep. 12, 2025
Dec. 05, 2022
Aug. 01, 2020
Aug. 30, 2020
Mar. 31, 2026
Mar. 31, 2025
Dec. 31, 2025
Convertible Debt, Current         $ 2,075   $ 2,008
Debt Instrument, Variable Interest Rate, Type [Extensible Enumeration]     Prime Rate [Member]        
Secured Promissory Note [Member] | B Riley [Member]              
Debt Instrument, Face Amount         2,000    
Debt Instrument, Maturity, Minimum Net Proceeds From Sale of Equity Interests $ 2,400            
Debt Instrument, Interest Rate, Stated Percentage 10.00%            
Debt Instrument, Fee Amount, Percentage of Original Principal 10.00%            
Debt Instrument, Fee Amount $ 200            
Debt Instrument, Default, Interest Rate 5.00%            
Convertible Debt, Current         2,000    
Debt Issuance Costs, Net         $ 76    
Debt Instrument, Interest Rate, Effective Percentage         22.60%    
Debt Instrument, Additional Liability Upon Debt Repayment         $ 200    
Interest Payable         110    
Interest Expense, Debt         117    
Secured Promissory Note [Member] | B Riley [Member] | Maximum [Member]              
Debt Instrument, Face Amount $ 2,000            
PWB Agreement [Member] | Term Loan [Member]              
Debt Instrument, Interest Rate, Stated Percentage       4.50%      
Debt Instrument, Interest Rate, Effective Percentage           7.64%  
Line of Credit Facility, Maximum Borrowing Capacity       $ 2,000      
Debt Instrument, Basis Spread on Variable Rate       0.50%      
Long-Term Debt, Gross 2,000            
Debt Instrument, Covenant Compliance, Maximum Deposits Outside Of United States $ 1,000            
Interest Expense, Debt         $ 0 $ 38  
Promissory Note [Member] | Subordinated Debt [Member]              
Debt Instrument, Face Amount   $ 5,000          
Debt Instrument, Interest Rate, Stated Percentage   0.00%          
Debt Instrument, Interest Rate, Effective Percentage         6.63% 6.86%  
Debt Instrument, Basis Spread on Variable Rate   5.00%          
Long-Term Debt, Gross         $ 1,875    
Interest Expense, Debt         35 $ 54  
Debt Instrument, Periodic Payment, Number of Installments   16          
Subordinated Debt         $ 4,055    
Debt Instrument, Discount Rate, Percentage         7.50%