Annual report [Section 13 and 15(d), not S-K Item 405]

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

v3.25.1
Note 2 - Summary of Significant Accounting Policies (Details Textual)
 1 Months Ended 12 Months Ended
Apr. 28, 2025
USD ($)
Apr. 14, 2025
USD ($)
Mar. 28, 2025
USD ($)
Mar. 26, 2025
USD ($)
Feb. 15, 2025
USD ($)
Feb. 10, 2025
USD ($)
Nov. 08, 2024
USD ($)
Dec. 31, 2023
USD ($)
Dec. 31, 2024
USD ($)
shares
Dec. 31, 2023
USD ($)
shares
Feb. 14, 2025
USD ($)
Dec. 31, 2022
USD ($)
Retained Earnings (Accumulated Deficit)               $ (249,014,000) $ (270,035,000) $ (249,014,000)    
Noncash Stock Compensation, Amortization and Impairment Charges                 3,900,000 17,300,000    
Net Cash Provided by (Used in) Operating Activities                 (11,462,000) (15,489,000)    
Cash and Cash Equivalents, at Carrying Value               7,609,000 1,310,000 7,609,000    
Contract with Customer, Asset, after Allowance for Credit Loss               546,000 372,000 546,000   $ 1,013,000
Contract with Customer, Liability               339,000 50,000 339,000   $ 111,000
Contract with Customer, Liability, Revenue Recognized                 289,000 111,000    
Advertising Expense                 $ 101,000 $ 134,000    
Finite-Lived Intangible Asset, Useful Life                 5 years      
Number of Reporting Units                 1      
Number of Reportable Segments                 1 1    
Reporting Unit, Fair Value Amount               29,100,000 $ 27,000,000 $ 29,100,000    
Reporting Unit, Carrying Amount               10,000,000 170,000 10,000,000    
Payments of Financing Costs                 343,000 2,735,000    
Debt Financing Costs Expensed As Incurred                 180,000 0    
Difference From Fair Value of New Preferred Stock and Carrying Value of Original Preferred Stock               0        
Unrecognized Tax Benefits               0 0 0    
Series AA Convertible Preferred Stock [Member]                        
Preferred Stock, Convertible, Down Round Feature, Increase (Decrease) in Equity, Amount                 $ (0) $ (7,567,000)    
Common Stock Underlying All Outstanding Stock Option, Restricted Stock Units and Warrants [Member]                        
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount | shares                 3,652,000 2,250,000    
Common Stock Potentially Issuable in Connection With Conversion of Outstanding Preferred Stock [Member]                        
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount | shares                 10,117,000 12,127,000    
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 1,682,000    
Prepaid Expenses and Other Current Assets [Member]                        
Deferred Costs, Current               $ 282,000 $ 64,000 $ 282,000    
Computer Software, Intangible Asset [Member]                        
Finite-Lived Intangible Asset, Useful Life                 3 years      
Minimum [Member]                        
Property, Plant and Equipment, Useful Life                 3 years      
Finite-Lived Intangible Asset, Useful Life                 3 years      
Maximum [Member]                        
Property, Plant and Equipment, Useful Life                 5 years      
Finite-Lived Intangible Asset, Useful Life                 10 years      
Transferred at Point in Time [Member]                        
Percentage of Revenue                 47.00% 24.00%    
Transferred over Time [Member]                        
Percentage of Revenue                 53.00% 76.00%    
Subsequent Event [Member] | Equity Purchase Agreement [Member]                        
Equity Offering, Maximum Amount                     $ 2,900,000  
Agile II Note [Member] | Subsequent Event [Member]                        
Debt Instrument, Face Amount           $ 2,500,000            
Debt Instrument, Term           224 days            
Agile Loan Agreement [Member]                        
Debt Instrument, Face Amount             $ 1,850,000          
Debt Instrument, Interest Rate, Stated Percentage             42.00%          
Debt Instrument, Term             196 days          
Agile Loan Agreement [Member] | Subsequent Event [Member]                        
Repayments of Debt         $ 1,500,000 $ 1,500,000            
Agile and Agile II [Member] | Subsequent Event [Member]                        
Proceeds from (Repayments of) Debt           $ 875,000            
Diagonal Note [Member] | Subsequent Event [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] | Forecast [Member]                        
Proceeds from Issuance of Debt $ 600,000 $ 600,000                    
Belleau Purchase Agreement [Member] | Subsequent Event [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%