v3.26.1
Note 5 - Debt and Warrants Transactions (Details Textual)
$ / shares in Units, shares in Thousands
1 Months Ended 2 Months Ended 3 Months Ended 6 Months Ended 12 Months Ended
May 26, 2026
USD ($)
$ / shares
shares
Mar. 04, 2026
USD ($)
$ / shares
shares
Feb. 03, 2026
USD ($)
$ / shares
shares
Nov. 05, 2025
USD ($)
$ / shares
shares
Oct. 02, 2025
USD ($)
Sep. 30, 2025
USD ($)
$ / shares
shares
Sep. 17, 2025
USD ($)
Sep. 11, 2025
USD ($)
$ / shares
Apr. 30, 2026
USD ($)
Mar. 04, 2026
USD ($)
$ / shares
shares
Jun. 30, 2026
USD ($)
$ / shares
Sep. 30, 2025
USD ($)
$ / shares
shares
Jun. 30, 2025
USD ($)
Jun. 30, 2026
USD ($)
$ / shares
Jun. 30, 2025
USD ($)
Dec. 31, 2025
USD ($)
$ / shares
shares
Jun. 04, 2026
$ / shares
shares
May 25, 2026
$ / shares
shares
Sep. 29, 2025
USD ($)
$ / shares
shares
Jul. 31, 2025
$ / shares
shares
Jul. 18, 2025
$ / shares
May 02, 2024
$ / shares
Apr. 03, 2023
$ / shares
shares
Aug. 12, 2022
$ / shares
shares
Aug. 11, 2022
USD ($)
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares                     $ 4.78     $ 4.78   $ 5.92                  
Notes Issued                           $ 1,889,000 $ 0                    
Warrant, Down Round Feature, Decrease in Net Income to Common Shareholder, Amount                     $ 86,000   $ (0) $ 86,000 $ (0)                    
Registered Direct Offering And Private Placement [Member]                                                  
Shares Issued, Price Per Share (in dollars per share) | $ / shares       $ 3.35                                 $ 4.65        
Measurement Input, Share Price [Member]                                                  
Warrants and Rights Outstanding, Measurement Input       3.3   3.65           3.65                          
Measurement Input, Risk Free Interest Rate [Member]                                                  
Warrants and Rights Outstanding, Measurement Input       0.038   0.036           0.036                          
Measurement Input, Price Volatility [Member]                                                  
Warrants and Rights Outstanding, Measurement Input       0.94   0.907           0.907                          
Measurement Input, Expected Term [Member]                                                  
Warrants and Rights Outstanding, Measurement Input       4.7   4.85           4.85                          
September 11, 2025 Warrants [Member]                                                  
Class of Warrant or Right, Issuance Price (in dollars per share) | $ / shares               $ 0.625                                  
Warrants and Rights Outstanding, Term (Year)               5 years 6 months                                  
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares $ 3.35             $ 3.65                 $ 3.35 $ 3.65 $ 3.65            
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares) | shares 400                                 300              
September 29, 2025 Warrant [Member]                                                  
Warrants and Rights Outstanding, Term (Year)                                     5 years 6 months            
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares       $ 3.35                         3.35 $ 3.7 $ 3.7            
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares) | shares                               300                  
Equity-classified Warrants [Member] | Measurement Input, Share Price [Member] | Minimum [Member]                                                  
Warrants and Rights Outstanding, Measurement Input                                     3.6            
Equity-classified Warrants [Member] | Measurement Input, Share Price [Member] | Maximum [Member]                                                  
Warrants and Rights Outstanding, Measurement Input                                     3.65            
Equity-classified Warrants [Member] | Measurement Input, Risk Free Interest Rate [Member] | Minimum [Member]                                                  
Warrants and Rights Outstanding, Measurement Input                                     0.036            
Equity-classified Warrants [Member] | Measurement Input, Risk Free Interest Rate [Member] | Maximum [Member]                                                  
Warrants and Rights Outstanding, Measurement Input                                     0.037            
Equity-classified Warrants [Member] | Measurement Input, Price Volatility [Member] | Minimum [Member]                                                  
Warrants and Rights Outstanding, Measurement Input                                     0.8867            
Equity-classified Warrants [Member] | Measurement Input, Price Volatility [Member] | Maximum [Member]                                                  
Warrants and Rights Outstanding, Measurement Input                                     0.8981            
Equity-classified Warrants [Member] | Measurement Input, Expected Term [Member]                                                  
Warrants and Rights Outstanding, Measurement Input                                     5.5            
Warrants Issued With Convertible Notes [Member]                                                  
Warrants and Rights Outstanding, Term (Year)   5 years               5 years                              
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares   $ 3.4               $ 3.4                              
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares) | shares   1,900               1,900                              
Warrants Issued With Convertible Notes [Member] | Measurement Input, Share Price [Member] | Minimum [Member]                                                  
Warrants and Rights Outstanding, Measurement Input   2.4               2.4                              
Warrants Issued With Convertible Notes [Member] | Measurement Input, Share Price [Member] | Maximum [Member]                                                  
Warrants and Rights Outstanding, Measurement Input   2.7               2.7                              
Warrants Issued With Convertible Notes [Member] | Measurement Input, Risk Free Interest Rate [Member]                                                  
Warrants and Rights Outstanding, Measurement Input   0.037               0.037                              
Warrants Issued With Convertible Notes [Member] | Measurement Input, Price Volatility [Member]                                                  
Warrants and Rights Outstanding, Measurement Input   0.90               0.90                              
Warrants Issued With Convertible Notes [Member] | Measurement Input, Expected Term [Member]                                                  
Warrants and Rights Outstanding, Measurement Input   5.5               5.5                              
Warrants Issued With Convertible Notes [Member] | Measurement Input, Effective Interest Method [Member]                                                  
Warrants and Rights Outstanding, Measurement Input   0.368               0.368                              
July 2025 Warrants [Member]                                                  
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares       $ 3.35   $ 3.65           $ 3.65             $ 3.65 $ 6          
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares) | shares       600   500           500             500 300          
Warrant, Down Round Feature, Decrease in Net Income to Common Shareholder, Amount       $ 100,000               $ 600,000                          
November 2025 Warrants [Member]                                                  
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares       $ 3.35                                          
September 2025 Warrants [Member]                                                  
Warrant, Down Round Feature, Decrease in Net Income to Common Shareholder, Amount $ 100,000                                                
September 2025 Warrants [Member] | Measurement Input, Share Price [Member]                                                  
Warrants and Rights Outstanding, Measurement Input 3.96                                                
September 2025 Warrants [Member] | Measurement Input, Risk Free Interest Rate [Member]                                                  
Warrants and Rights Outstanding, Measurement Input 0.042                                                
September 2025 Warrants [Member] | Measurement Input, Price Volatility [Member]                                                  
Warrants and Rights Outstanding, Measurement Input 0.94                                                
September 2025 Warrants [Member] | Measurement Input, Expected Term [Member]                                                  
Warrants and Rights Outstanding, Measurement Input 4.85                                                
Notes Warrants [Member]                                                  
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares                                 $ 2.81         $ 2.06 $ 26.8    
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares) | shares                                 56           300    
Warrants and Rights Outstanding                                                 $ 3,800,000
Notes Warrants [Member] | Measurement Input, Share Price [Member]                                                  
Warrants and Rights Outstanding, Measurement Input                     2.68     2.68   2.7                  
Notes Warrants [Member] | Measurement Input, Risk Free Interest Rate [Member]                                                  
Warrants and Rights Outstanding, Measurement Input                     0.039     0.039   0.035                  
Notes Warrants [Member] | Measurement Input, Price Volatility [Member]                                                  
Warrants and Rights Outstanding, Measurement Input                     0.882     0.882   1.199                  
Notes Warrants [Member] | Measurement Input, Expected Term [Member]                                                  
Warrants and Rights Outstanding, Measurement Input                     1.12     1.12   1.61                  
Additional Warrants [Member]                                                  
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares                                 $ 106             $ 21.2  
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares) | shares                                 28             100  
Additional Warrants [Member] | Measurement Input, Share Price [Member]                                                  
Warrants and Rights Outstanding, Measurement Input                     2.68     2.68   2.7                  
Additional Warrants [Member] | Measurement Input, Risk Free Interest Rate [Member]                                                  
Warrants and Rights Outstanding, Measurement Input                     0.04     0.04   0.035                  
Additional Warrants [Member] | Measurement Input, Price Volatility [Member]                                                  
Warrants and Rights Outstanding, Measurement Input                     1.012     1.012   1.16                  
Additional Warrants [Member] | Measurement Input, Expected Term [Member]                                                  
Warrants and Rights Outstanding, Measurement Input                     1.62     1.62   2.12                  
Smith [Member] | September 11, 2025 Warrants [Member]                                                  
Proceeds from Issuance of Warrants               $ 100,000                                  
Huffmyer [Member] | September 11, 2025 Warrants [Member]                                                  
Proceeds from Issuance of Warrants             $ 15,000                                    
The September 11, 2025 Notes [Member] | Smith [Member]                                                  
Debt Instrument, Maximum Borrowing Capacity               700,000                                  
Proceeds from Issuance of Debt               700,000                                  
Repayments of Debt                 $ 200,000                                
Gain (Loss) on Extinguishment of Debt   $ 0                                              
Extinguishment of Debt, Amount   $ 500,000                                              
The September 11, 2025 Notes [Member] | Smith [Member] | Maximum [Member]                                                  
Repayments of Debt                   $ 2,200,000                              
The September 11, 2025 Notes [Member] | Smith [Member] | September 11, 2025 Warrants [Member]                                                  
Proceeds from Issuance Notes and Warrants               800,000                                  
The September 11, 2025 Notes [Member] | Huffmyer [Member]                                                  
Debt Instrument, Maximum Borrowing Capacity               $ 100,000                                  
Debt Instrument, Interest Rate, Stated Percentage               15.00%                                  
Proceeds from Issuance of Debt             85,000                                    
The September 11, 2025 Notes [Member] | Huffmyer [Member] | September 11, 2025 Warrants [Member]                                                  
Proceeds from Issuance Notes and Warrants             $ 100,000                                    
September 29, 2025 Note [Member]                                                  
Debt Instrument, Maximum Borrowing Capacity                                     $ 400,000            
Proceeds from Issuance of Debt         $ 100,000 $ 300,000                                      
September 11th and 29th 2025 Notes [Member]                                                  
Proceeds from Issuance Notes and Warrants                               $ 1,200,000                  
Debt Instrument, Unamortized Discount                               $ 400,000                  
Secured Promissory Notes [Member] | Smith [Member]                                                  
Debt Instrument, Interest Rate, Stated Percentage     15.00%                                            
Debt Instrument, Unamortized Discount     $ 400,000                                            
Secured Promissory Notes [Member] | Smith [Member] | Unregistered Common Stock Warrants [Member]                                                  
Warrants and Rights Outstanding, Term (Year)     5 years                                            
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares     $ 3.4                                            
Proceeds from Issuance Notes and Warrants     $ 1,000,000                                            
Proceeds from Issuance of Debt     814,979                                            
Proceeds from Issuance of Warrants     $ 185,021                                            
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares) | shares     300                                            
Secured Promissory Notes [Member] | Smith [Member] | Unregistered Common Stock Warrants [Member] | Measurement Input, Share Price [Member]                                                  
Warrants and Rights Outstanding, Measurement Input     2.7                                            
Secured Promissory Notes [Member] | Smith [Member] | Unregistered Common Stock Warrants [Member] | Measurement Input, Risk Free Interest Rate [Member]                                                  
Warrants and Rights Outstanding, Measurement Input     0.038                                            
Secured Promissory Notes [Member] | Smith [Member] | Unregistered Common Stock Warrants [Member] | Measurement Input, Price Volatility [Member]                                                  
Warrants and Rights Outstanding, Measurement Input     0.89                                            
Secured Promissory Notes [Member] | Smith [Member] | Unregistered Common Stock Warrants [Member] | Measurement Input, Expected Term [Member]                                                  
Warrants and Rights Outstanding, Measurement Input     5.5                                            
Convertible Notes [Member]                                                  
Debt Instrument, Interest Rate, Stated Percentage   8.00%               8.00%                              
Debt Instrument, Unamortized Discount   $ 2,500,000               $ 2,500,000                              
Debt Instrument, Face Amount   $ 4,900,000               $ 4,900,000                              
Debt Instrument, Convertible, Conversion Price (in dollars per share) | $ / shares   $ 3.4               $ 3.4                              
Debt Instrument, Default Interest Rate   12.00%               12.00%                              
Debt Instrument, Periodic Payment Per $1,000,000   $ 7,000                                              
Notes Issued   1,900,000                                              
Debt Instrument, Unamortized Discount (Premium), Net                     $ 2,900,000     $ 2,900,000                      
Interest Expense, Debt                     200,000     800,000                      
Amortization of Debt Issuance Costs and Discounts                     $ 100,000     $ 500,000                      
Convertible Notes [Member] | Minimum [Member]                                                  
Debt Instrument, Periodic Payment   $ 1,000