Note 19 - Related Parties (Detailed Textual) - USD ($) $ in Thousands					12 Months Ended
	Feb. 18, 2025	Jan. 08, 2025	Mar. 04, 2024	Jan. 08, 2024	Dec. 31, 2025	Dec. 31, 2024	Mar. 31, 2024	Mar. 06, 2024
Related Party Transaction [Line Items]
Shares issued and sell	3,379,377
Other income from a related party					$ 1,400	$ 0
Lantheus Investment Agreement [Member]
Related Party Transaction [Line Items]
Shares issued and sell				5,634,235
Percent of outstanding shares				19.99%
Purchase price				$ 8,000
Lantheus Investment Agreement [Member] | Option Agreement [Member]
Related Party Transaction [Line Items]
Percent of outstanding shares							19.90%
Other income from a related party		$ 1,400
One-time payment received for rights granted				$ 28,000
Lantheus Alpha Therapy, LLC [Member] | Lantheus Investment Agreement [Member]
Related Party Transaction [Line Items]
Shares issued and sell			9,200,998	5,634,235
Percent of outstanding shares				19.99%				19.90%
Progenics APA [Member]
Related Party Transaction [Line Items]
Purchase price				$ 8,000