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Note 7 - Convertible Notes (Details Textual) - USD ($)
$ / shares in Units, $ in Thousands
1 Months Ended 9 Months Ended
May 10, 2024
Jan. 31, 2025
Sep. 30, 2025
Sep. 30, 2024
Proceeds from Convertible Debt     $ 2,950 $ 146
Debt Instrument, Variable Interest Rate, Type [Extensible Enumeration] Secured Overnight Financing Rate (SOFR) [Member]      
Conversion of the 2025 Note into Common Stock [Member]        
Debt Conversion, Original Debt, Amount     $ 2,485  
Debt Conversion, Converted Instrument, Shares Issued (in shares)     2,356,500  
The 2025 Note Warrants [Member]        
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)   805,263    
Warrants and Rights Outstanding   $ 1,046    
The 2025 Note [Member]        
Debt Instrument, Term (Year)   18 months    
Debt Instrument, Face Amount   $ 3,240    
Proceeds from Convertible Debt   $ 3,000    
Debt Instrument, Original Issue Discount Rate   7.40%    
Debt Instrument, Interest Rate, Stated Percentage   7.00%    
Debt Instrument, Convertible, Conversion Price (in dollars per share)   $ 2.22    
Debt Instrument, Convertible, Stock Price Trigger (in dollars per share)   $ 0.5    
Debt Instrument, Convertible, Threshold Average Daily Trading Volumne   $ 100    
Debt Instrument, Convertible, Threshold Trading Days   20    
Debt Instrument, Installment Notice Date Period (Day)   6 days    
Debt Instrument, Monthly Redemption Amount, Percentage   6.67%    
Debt Instrument, Convertible, Conversion Price Used in Calculation (in dollars per share)   $ 0.3    
Debt Instrument, Convertible, Threshold Percentage of Stock Price Trigger   90.00%    
Debt Instrument, Convertible, Threshold Consecutive Trading Days   5    
Debt Instrument, Convertible, Maximum Beneficial Ownership Percentage   19.99%    
Convertible Debt, Fair Value Disclosures   $ 3,266 $ 106  
Debt Issuance Costs, Net   $ 1,312    
Repayments of Debt     989  
Long-Term Debt, Gross     $ 106  
An Investor [Member]        
Proceeds From Issuance of Common Stock and Debt $ 1,000      
An Investor [Member] | Convertible Note 2024 [Member]        
Debt Instrument, Term (Year) 5 years      
Debt Instrument, Face Amount $ 146      
Debt Instrument, Basis Spread on Variable Rate 1.00%      
An Investor [Member] | Security Purchase Agreement [Member]        
Stock Issued During Period, Shares, New Issues (in shares) 330,823