v3.26.1
Note 20 - Subsequent Events (Details Textual)
 1 Months Ended 6 Months Ended
Aug. 13, 2026
USD ($)
$ / shares
shares
Jul. 30, 2026
USD ($)
$ / shares
shares
Jul. 29, 2026
USD ($)
Jul. 15, 2026
shares
Apr. 21, 2026
USD ($)
$ / shares
shares
Apr. 20, 2026
USD ($)
$ / shares
shares
Mar. 09, 2026
shares
Aug. 11, 2026
shares
Mar. 31, 2026
shares
Feb. 28, 2026
shares
Jun. 30, 2026
USD ($)
$ / shares
Jul. 31, 2026
USD ($)
ft²
Jun. 28, 2026
USD ($)
Apr. 15, 2026
$ / shares
Apr. 14, 2026
$ / shares
Feb. 06, 2026
$ / shares
Dec. 31, 2025
$ / shares
Lessee, Operating Lease, Liability, to be Paid | $                     $ 2,711,000            
Preferred Stock, Par or Stated Value Per Share (in dollars per share)                     $ 0.0001           $ 0.0001
March Bridge Note [Member]                                  
Repayments of Debt | $                     $ 615,000            
Series C4 Convertible Preferred Stock [Member]                                  
Stock Issued During Period, Shares, New Issues (in shares) | shares         1,853                        
Proceeds from Issuance of Preferred Stock and Preference Stock | $         $ 1,900,000                        
Series C4 Convertible Preferred Stock [Member] | Minimum [Member]                                  
Preferred Stock, Convertible, Conversion Price (in dollars per share)         $ 0.35                        
Series C Preferred Stock [Member]                                  
Preferred Stock, Par or Stated Value Per Share (in dollars per share)                     $ 0.0001           0.0001
Series C Preferred Stock [Member] | Minimum [Member]                                  
Preferred Stock, Convertible, Conversion Price (in dollars per share)         $ 0.35                        
Series C1 Convertible Preferred Stock [Member]                                  
Stock Issued During Period, Shares, New Issues (in shares) | shares                 1,853 1,617              
Preferred Stock, Par or Stated Value Per Share (in dollars per share)                     $ 0.0001            
Preferred Stock, Stated Value | $                     $ 1,000            
Preferred Stock, Convertible, Conversion Price (in dollars per share)                     $ 1.43     $ 0.883 $ 1.43    
Series C1 Convertible Preferred Stock [Member] | Minimum [Member]                                  
Preferred Stock, Convertible, Conversion Price (in dollars per share)                     0.35            
Series C2 Convertible Preferred Stock [Member]                                  
Stock Issued During Period, Shares, New Issues (in shares) | shares         1,617   3,470                    
Preferred Stock, Par or Stated Value Per Share (in dollars per share)                     $ 0.0001            
Preferred Stock, Stated Value | $                     $ 1,000            
Proceeds from Issuance of Preferred Stock and Preference Stock | $         $ 1,600,000                        
Preferred Stock, Convertible, Conversion Price (in dollars per share)                     $ 0.883            
Series D Preferred Stock [Member]                                  
Stock Issued During Period, Shares, New Issues (in shares) | shares           11,028                      
Preferred Stock, Par or Stated Value Per Share (in dollars per share)           $ 0.0001         0.0001           0.0001
Preferred Stock, Stated Value | $           $ 1,000                      
Preferred Stock, Convertible, Conversion Price (in dollars per share)           $ 1.1038                      
Series D Preferred Stock [Member] | Minimum [Member]                                  
Preferred Stock, Convertible, Conversion Price (in dollars per share)           $ 0.35                      
Series B Preferred Stock [Member]                                  
Preferred Stock, Par or Stated Value Per Share (in dollars per share)                     $ 0.0001           $ 0.0001
Preferred Stock, Convertible, Conversion Price (in dollars per share)                               $ 1.78  
Securities Purchase Agreements [Member] | Series C3 Convertible Preferred Stock [Member]                                  
Preferred Stock, Stated Value | $                         $ 1,000        
Subsequent Event [Member] | Conversions of Preferred Stock Into Common Stock [Member]                                  
Conversion of Stock, Shares Issued (in shares) | shares               10,855,258                  
Subsequent Event [Member] | March Bridge Note [Member]                                  
Repayments of Debt | $   $ 2,200,000                              
Subsequent Event [Member] | Series C3 Convertible Preferred Stock [Member] | Conversions of Preferred Stock Into Common Stock [Member]                                  
Conversion of Stock, Shares Converted (in shares) | shares               730                  
Subsequent Event [Member] | Series C4 Convertible Preferred Stock [Member]                                  
Stock Issued During Period, Shares, New Issues (in shares) | shares 4,000                                
Proceeds from Issuance of Preferred Stock and Preference Stock | $ $ 4,000,000                                
Preferred Stock, Convertible, Conversion Price (in dollars per share) $ 0.23                                
Subsequent Event [Member] | Series C Preferred Stock [Member]                                  
Preferred Stock, Convertible, Conversion Price (in dollars per share) 0.23                                
Subsequent Event [Member] | Series C1 Convertible Preferred Stock [Member] | Conversions of Preferred Stock Into Common Stock [Member]                                  
Conversion of Stock, Shares Converted (in shares) | shares               1,859.52                  
Subsequent Event [Member] | Series C2 Convertible Preferred Stock [Member] | Conversions of Preferred Stock Into Common Stock [Member]                                  
Conversion of Stock, Shares Converted (in shares) | shares               1,439                  
Subsequent Event [Member] | Series D Preferred Stock [Member]                                  
Preferred Stock, Convertible, Conversion Price (in dollars per share) $ 0.23                                
Subsequent Event [Member] | Series D Preferred Stock [Member] | Conversions of Preferred Stock Into Common Stock [Member]                                  
Conversion of Stock, Shares Converted (in shares) | shares               3,540                  
Subsequent Event [Member] | Series B Preferred Stock [Member]                                  
Payments for Repurchase of Preferred Stock and Preference Stock | $     $ 321,000                            
Subsequent Event [Member] | Securities Purchase Agreements [Member] | Series C3 Convertible Preferred Stock [Member]                                  
Stock Issued During Period, Shares, New Issues (in shares) | shares       3,470                          
Proceeds from Issuance of Preferred Stock and Preference Stock | $   3,500,000                              
Payments of Stock Issuance Costs | $   $ 267,000                              
Preferred Stock, Convertible, Conversion Price (in dollars per share)   $ 0.632                              
Subsequent Event [Member] | Securities Purchase Agreements [Member] | Series C4 Convertible Preferred Stock [Member]                                  
Stock Issued During Period, Shares, New Issues (in shares) | shares   2,821                              
Proceeds from Issuance of Preferred Stock and Preference Stock | $   $ 2,800,000                              
Payments of Stock Issuance Costs | $   $ 193,000                              
Preferred Stock, Convertible, Conversion Price (in dollars per share)   $ 0.35                              
Subsequent Event [Member] | Securities Purchase Agreements [Member] | Series C Preferred Stock [Member]                                  
Preferred Stock, Par or Stated Value Per Share (in dollars per share)   $ 0.0001                              
Preferred Stock, Stated Value | $   $ 1,000                              
Subsequent Event [Member] | Office Space in Melville, New York [Member]                                  
Area of Real Estate Property (Square Foot) | ft²                       3,082          
Lessee, Operating Lease, Term of Contract (Month)                       7 years          
Lessee, Operating Lease, Renewal Term (Month)                       5 years          
Lessee, Operating Lease, Liability, to be Paid | $                       $ 700,000