v3.26.1
Note 2 - Significant Accounting Policies (Details Textual)
$ / shares in Units, $ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2026
USD ($)
$ / shares
shares
Jun. 30, 2025
USD ($)
Jun. 30, 2026
USD ($)
$ / shares
shares
Dec. 31, 2025
USD ($)
Number of Reportable Segments     1  
Sublease Agreement, Potential Milestone Payments $ 579,800   $ 579,800  
Restricted Cash 0   0 $ 2,100
Cash and Cash Equivalents, and Restricted Cash In Excess of Insured Limits 35,300   35,300  
Inventory, Net 13,324   $ 13,324 $ 5,515
Tangible Asset Impairment Charges $ 0 $ 0    
Lessee, Operating Lease, Discount Rate 12.40%   12.40%  
Computer Equipment [Member]        
Property, Plant and Equipment, Useful Life (Year) 3 years   3 years  
Telephone Equipment [Member]        
Property, Plant and Equipment, Useful Life (Year) 3 years   3 years  
Furniture and Fixtures [Member]        
Property, Plant and Equipment, Useful Life (Year) 7 years   7 years  
Europe [Member]        
Inventory, Net $ 13,200   $ 13,200  
Common Stock [Member]        
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares) | shares 2,116,250   2,116,250  
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares $ 16   $ 16