Note 14 - Segment Reporting and Geographic Information - Segment Expenses (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024
Clinical and pre-clinical expenses	$ 1,630	$ 462
Patent expenses	792	928
Personnel costs	3,196	4,642
Professional services	1,958	1,442
Other operational expenses	1,369	1,280
Other segment items	(230)	111
Segment net loss	8,715	8,865
Net loss from discontinued operations	5,502	7,828
Net loss	$ 14,217	$ 16,693