Quarterly report [Sections 13 or 15(d)]

Note 2 - Summary of Significant Accounting Policies (Details Textual)

v3.25.1
Note 2 - Summary of Significant Accounting Policies (Details Textual)
1 Months Ended 3 Months Ended 12 Months Ended
May 14, 2025
USD ($)
$ / shares
shares
May 12, 2025
USD ($)
$ / shares
May 09, 2025
USD ($)
$ / shares
shares
Apr. 28, 2025
USD ($)
Apr. 14, 2025
USD ($)
Mar. 28, 2025
USD ($)
Mar. 26, 2025
USD ($)
Feb. 15, 2025
USD ($)
Feb. 14, 2025
USD ($)
shares
Feb. 10, 2025
USD ($)
Nov. 08, 2024
USD ($)
Jan. 31, 2025
shares
Mar. 31, 2025
USD ($)
$ / shares
shares
Mar. 31, 2024
USD ($)
shares
Dec. 31, 2024
USD ($)
$ / shares
shares
Dec. 31, 2023
USD ($)
Retained Earnings (Accumulated Deficit)                         $ (274,266,000)   $ (270,035,000)  
Cash Provided by (Used in) Operating Activity, Including Discontinued Operation                         (2,203,000) $ (3,743,000)    
Cash and Cash Equivalent                         $ 747,000   $ 1,310,000  
Common Stock, Par or Stated Value Per Share (in dollars per share) | $ / shares                         $ 0.001   $ 0.001  
Stock Issued During Period, Shares, New Issues | shares                       262,501     262,501  
Contract with Customer, Asset, after Allowance for Credit Loss                         $ 258,000   $ 372,000  
Contract with Customer, Liability                         633,000   50,000 $ 399,000
Advertising Expense                         $ 18,000 43,000    
Finite-Lived Intangible Asset, Useful Life                         5 years      
Number of Reportable Segments                         1      
Payments of Financing Costs                         $ 132,000 $ 0    
Number of Operating Segments                         1      
Unrecognized Tax Benefits                         $ 0   0  
Common Stock Underlying All Outstanding Stock Option, Restricted Stock Units and Warrants [Member]                                
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount | shares                         4,498,000 2,178,000    
Common Stock Potentially Issuable in Connection With Conversion of Outstanding Preferred Stock [Member]                                
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount | shares                         10,018,000 11,442,000    
Common Stock Potentially Issuable in Connection With The Exercise of Outstanding Additional Investment Rights [Member]                                
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount | shares                         8,414,000 8,414,000    
Prepaid Expenses and Other Current Assets [Member]                                
Deferred Costs, Current                         $ 217,000   $ 64,000  
Computer Software, Intangible Asset [Member]                                
Finite-Lived Intangible Asset, Useful Life                         3 years      
Minimum [Member]                                
Finite-Lived Intangible Asset, Useful Life                         3 years      
Maximum [Member]                                
Finite-Lived Intangible Asset, Useful Life                         10 years      
Equity Purchase Agreement [Member]                                
Equity Offering, Maximum Amount                 $ 2,900,000              
Equity Offering, Maximum Shares to be Issued (in shares) | shares                 3,319,323              
Shares Issued, Price Per Share (in dollars per share) | $ / shares                         $ 0.34      
Proceeds from Issuance of Common Stock                         $ 231,000      
Stock Issued During Period, Shares, New Issues | shares                 300,000       717,000      
Subsequent Event [Member] | Underwriting Agreement [Member]                                
Equity Offering, Maximum Shares to be Issued (in shares) | shares     5,117,647                          
Common Stock, Par or Stated Value Per Share (in dollars per share) | $ / shares     $ 0.001                          
Shares Issued, Price Per Share (in dollars per share) | $ / shares   $ 0.17 $ 0.17                          
Proceeds from Issuance of Common Stock   $ 700,400 $ 700,400                          
Subsequent Event [Member] | Over-Allotment Option [Member]                                
Equity Offering, Maximum Shares to be Issued (in shares) | shares     767,647                          
Option, Period (Day)     45 days                          
Shares Issued, Price Per Share (in dollars per share) | $ / shares $ 0.17                              
Proceeds from Issuance of Common Stock $ 104,999                              
Stock Issued During Period, Shares, New Issues | shares 617,647                              
Agile II Note [Member]                                
Debt Instrument, Face Amount                   $ 2,500,000            
Debt Instrument, Interest Rate, Stated Percentage                   42.00%            
Debt Instrument, Term                   224 days            
Agile Loan Agreement [Member]                                
Debt Instrument, Face Amount                     $ 1,850,000          
Repayments of Debt               $ 1,500,000   $ 1,500,000            
Debt Instrument, Interest Rate, Stated Percentage                     42.00%          
Debt Instrument, Term                     196 days          
Agile and Agile II [Member]                                
Proceeds from (Repayments of) Debt                   $ 875,000            
Diagonal Note [Member]                                
Debt Instrument, Face Amount             $ 300,000                  
Debt Instrument, Interest Rate, Stated Percentage             10.00%                  
Proceeds from Issuance of Debt             $ 279,000                  
Debt Instrument, Default, Interest Rate             22.00%                  
Belleau Purchase Agreement [Member]                                
Debt Instrument, Face Amount           $ 1,500,000                    
Debt Instrument, Interest Rate, Stated Percentage           20.00%                    
Proceeds from Issuance of Debt           $ 300,000                    
Debt Instrument, Term           12 months                    
Debt Instrument, Default, Interest Rate           20.00%                    
Belleau Purchase Agreement [Member] | Subsequent Event [Member]                                
Proceeds from Issuance of Debt       $ 600,000 $ 600,000