Quarterly report [Sections 13 or 15(d)]

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

v3.26.1
Note 2 - Summary of Significant Accounting Policies (Details Textual)
3 Months Ended
Mar. 31, 2026
USD ($)
shares
Mar. 31, 2025
USD ($)
shares
Dec. 31, 2025
USD ($)
Dec. 31, 2024
USD ($)
Contract with Customer, Asset, after Allowance for Credit Loss $ 394,000   $ 107,000 $ 372,000
Contract with Customer, Liability 471,000   566,000 $ 50,000
Cash 2,367,000   5,377,000  
Cash Equivalents, at Carrying Value 1,863,000   9,013,000  
Marketable Securities $ 7,124,000   0  
Intangible Asset, Finite-Lived, Useful Life 5 years      
Number of Reportable Segments 1      
Deferred Costs, Current $ 888,000   888,000  
Payments of Financing Costs 0 $ 132,000    
Unrecognized Tax Benefits $ 0   $ 0  
Number of Operating Segments 1      
Pre-Funded Warrant [Member]        
Class of Warrant or Right, Number of Securities Called by Warrants or Rights | shares 1,112,083 0    
Software, In-Development, Internally Developed, and Purchased [Member]        
Intangible Asset, Finite-Lived, Useful Life 3 years      
Minimum [Member]        
Intangible Asset, Finite-Lived, Useful Life 3 years      
Maximum [Member]        
Intangible Asset, Finite-Lived, Useful Life 10 years