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

Note 8 - Goodwill and Intangible Assets (Details Textual)

v3.25.4
Note 8 - Goodwill and Intangible Assets (Details Textual) - USD ($)
$ in Thousands
12 Months Ended
Apr. 16, 2025
Dec. 31, 2025
Dec. 31, 2024
Goodwill   $ 431 $ 431
Goodwill, Impairment Loss   0 0
Impairment of Intangible Assets (Excluding Goodwill)   750 0
Intangible Assets, Net (Excluding Goodwill)   3,500 4,580
Acquired Finite-Lived Intangible Asset, Amortization   330 312
License Agreements with Vanderbilt University [Member] | Licensed Patent Products [Member]      
Impairment of Intangible Assets (Excluding Goodwill)   570  
Intangible Assets, Net (Excluding Goodwill)   1,740  
Royalty Percentage 3.75%    
Royalty Expense $ 100    
License Agreements with Vanderbilt University [Member] | Licensed Patent Products [Member] | Minimum [Member]      
Royalty Expense $ 75    
License Agreements with Vanderbilt University, Termination Agreement [Member] | Licensed Patent Products [Member]      
Impairment of Intangible Assets (Excluding Goodwill)   180  
Intangible Assets, Net (Excluding Goodwill)   $ 0  
Royalty Percentage 50.00%    
Royalty Income, Nonoperating $ 100    
Developed Technology Rights [Member]      
Finite-Lived Intangible Asset, Useful Life (Year)   8 years  
Intellectual Property [Member]      
Finite-Lived Intangible Asset, Useful Life (Year)   12 years  
Customer Relationships [Member]      
Finite-Lived Intangible Asset, Useful Life (Year)   8 years  
Other Intangible Assets [Member]      
Impairment of Intangible Assets (Excluding Goodwill)     $ 0