v3.26.1
Note 11 - Preferred Stock (Details Textual)
 1 Months Ended 3 Months Ended 6 Months Ended 12 Months Ended
Aug. 01, 2026
USD ($)
shares
Mar. 27, 2026
USD ($)
$ / shares
shares
Feb. 03, 2026
USD ($)
$ / shares
shares
Feb. 03, 2026
USD ($)
$ / shares
shares
Jun. 30, 2026
USD ($)
$ / shares
shares
Mar. 31, 2026
USD ($)
$ / shares
shares
Jun. 30, 2025
USD ($)
shares
Mar. 31, 2025
USD ($)
shares
Jun. 30, 2026
USD ($)
$ / shares
shares
Jun. 30, 2025
USD ($)
shares
Dec. 31, 2025
USD ($)
$ / shares
shares
Dec. 31, 2024
USD ($)
shares
Jun. 16, 2025
USD ($)
Jan. 17, 2025
$ / shares
Nov. 15, 2024
$ / shares
Sep. 08, 2022
USD ($)
Deemed Dividends, Preferred Stock                 $ 26,460,000              
Dividends, Preferred Stock             $ (0)                  
Stock Issued During Period, Value, New Issues                 16,392,000              
Proceeds from Issuance of Common Stock                 0 $ 2,490,000            
Warrants and Rights Outstanding     $ 11,687,000 $ 11,687,000                        
Fair Value Adjustment of Warrants         $ (0)   $ (0)   (1,831,000) $ (0)            
Adjustments to Additional Paid in Capital, Transfer of Warrants to Permanent Equity                 11,687,000              
Series D Preferred Stock Warrant [Member]                                
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares) | shares     30,000 30,000                        
Proceeds from Issuance of Warrants     $ 13,518,000                          
Class of Warrant or Right, Callable Price Per Share (in dollars per share) | $ / shares   $ 0.001                            
September 2022 Senior Convertible Note [Member]                                
Long-Term Debt     8,415,000 $ 8,415,000 8,415,000       8,415,000              
Repayments of Debt       22,346,000         22,300,000              
Debt Instrument, Face Amount                     $ 7,839,000         $ 11,250,000
The 2026 Note [Member]                                
Debt Instrument, Face Amount     $ 15,000,000 $ 15,000,000 $ 15,000,000       $ 15,000,000              
Conversion of Series C Preferred Stock [Member]                                
Conversion of Stock, Shares Issued (in shares) | shares             84,670   433,546 128,004            
Conversion of Stock, Shares Converted (in shares) | shares             1,000   2,495 1,520            
Conversion of Stock, Amount Converted                 $ 1,387              
Conversion of Series D Preferred Stock into Common Stock [Member]                                
Conversion of Stock, Shares Issued (in shares) | shares   4,615,393                            
Conversion of Stock, Amount Converted   $ 16,392,000                            
Measurement Input, Expected Dividend Rate [Member]                                
Warrants and Rights Outstanding, Measurement Input   0                            
Measurement Input, Price Volatility [Member]                                
Warrants and Rights Outstanding, Measurement Input   0.40                            
Measurement Input, Risk Free Interest Rate [Member] | Minimum [Member]                                
Warrants and Rights Outstanding, Measurement Input   0.0376                            
Measurement Input, Risk Free Interest Rate [Member] | Maximum [Member]                                
Warrants and Rights Outstanding, Measurement Input   0.0397                            
Measurement Input, Share Price [Member]                                
Warrants and Rights Outstanding, Measurement Input   8.67 9.57 9.57                        
Measurement Input, Exercise Price [Member]                                
Warrants and Rights Outstanding, Measurement Input   6.5                            
Measurement Input, Expected Term [Member]                                
Warrants and Rights Outstanding, Measurement Input   4.86 5 5                        
Series B Preferred Stock [Member]                                
Preferred Stock, Shares Issued (in shares) | shares         1,591,209       1,591,209   1,529,389          
Preferred Stock, Shares Outstanding (in shares) | shares         1,591,209       1,591,209   1,529,389          
Preferred Stock, Par or Stated Value Per Share (in dollars per share) | $ / shares         $ 0.001       $ 0.001   $ 0.001          
Preferred Stock, Stated Value Per Share (in dollars per share) | $ / shares         $ 3       $ 3              
Convertible Preferred Stock, Shares Converted into One Common Share (in shares) | shares         450       450              
Preferred Stock, Dividend Rate, Percentage                 8.00%              
Preferred Stock Dividends, Income Statement Impact         $ 95,000   $ 88,000   $ 189,000 $ 175,000            
Dividends, Preferred Stock, Stock           $ 93,000   $ 86 $ 185,000 $ 171 $ 92,000 $ 85,000        
Preferred Stock Dividends, Shares (in shares) | shares           31,218   28,834 61,820 57,104 30,602 28,270        
Dividends, Preferred Stock         $ (0)   (0)   $ (0) $ (0)            
Series B Preferred Stock [Member] | Subsequent Event [Member]                                
Dividends, Preferred Stock, Stock $ 95                              
Preferred Stock Dividends, Shares (in shares) | shares 31,837                              
Series C Preferred Stock [Member]                                
Preferred Stock, Shares Issued (in shares) | shares         0       0   19,457          
Preferred Stock, Shares Outstanding (in shares) | shares         0       0   19,457          
Preferred Stock, Par or Stated Value Per Share (in dollars per share) | $ / shares         $ 0.001 $ 0.001     $ 0.001   $ 0.001       $ 0.001  
Preferred Stock, Stated Value Per Share (in dollars per share) | $ / shares         $ 1,080       $ 1,080   $ 1,080     $ 1,000    
Preferred Stock, Dividend Rate, Percentage                 7.875%              
Preferred Stock Dividends, Income Statement Impact     $ 145,000   $ (0)   481,000   $ 145,000 879,000            
Preferred Stock, Convertible, Conversion Price (in dollars per share) | $ / shares         $ 32.04       $ 32.04              
Preferred Stock, Liquidation Preference, Value                         $ 2,000,000      
Deemed Dividends, Preferred Stock         $ (0)   $ 818,000   $ 6,689,000 1,607,000            
Dividends, Preferred Stock                 $ (0) $ (0) $ 1,784,000          
Stock Redeemed or Called During Period, Shares (in shares) | shares       16,962         16,962              
Series C Preferred Stock [Member] | Measurement Input, Conversion Price [Member]                                
Preferred Stock, Measurement Input                 12              
Series C Preferred Stock [Member] | Measurement Input, Required Rate of Return [Member]                                
Preferred Stock, Measurement Input                 0.145              
Series C Preferred Stock [Member] | Measurement Input, Expected Dividend Rate [Member]                                
Preferred Stock, Measurement Input                 0              
Series C Preferred Stock [Member] | Measurement Input, Price Volatility [Member]                                
Preferred Stock, Measurement Input                 0.40              
Series C Preferred Stock [Member] | Measurement Input, Risk Free Interest Rate [Member] | Minimum [Member]                                
Preferred Stock, Measurement Input                 3.98              
Series C Preferred Stock [Member] | Measurement Input, Risk Free Interest Rate [Member] | Maximum [Member]                                
Preferred Stock, Measurement Input                 0.043              
Series D Preferred Stock [Member]                                
Preferred Stock, Par or Stated Value Per Share (in dollars per share) | $ / shares     $ 0.001 $ 0.001                        
Preferred Stock, Convertible, Conversion Price (in dollars per share) | $ / shares     $ 6.5 $ 6.5                        
Stock Issued During Period, Value, New Issues     $ 30,000,000                          
Proceeds from Issuance of Common Stock     $ 29,900,000                          
Stock Issued During Period, Shares, New Issues (in shares) | shares     30,000                          
Temporary Equity, Carrying Amount, Attributable to Parent     $ 16,482,000 $ 16,482,000                        
Preferred Stock, Convertible, Conversion Ratio   6.5                            
Series D Preferred Stock [Member] | Each Individual Investor [Member]                                
Stock Issued During Period, Shares, New Issues (in shares) | shares     100                          
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares) | shares     100 100                        
Warrants and Rights Outstanding     $ 100 $ 100