Note 10 - Intangible Assets and Other Assets, Net (Details Textual) - USD ($)		3 Months Ended	12 Months Ended
	Aug. 23, 2023	Dec. 31, 2025	Dec. 31, 2025	Dec. 31, 2024	Aug. 23, 2022
Schedule of Equity Method Investments [Line Items]
Goodwill impairment			$ 0	$ 24,062,000
Goodwill				0
Impairment to IPR&D assets		$ 10,000,000	$ 10,000,000	$ 0
Impairment, Intangible Asset, Indefinite-Lived (Excluding Goodwill), Statement of Income or Comprehensive Income [Extensible Enumeration]		Research and development		Research and development
RadRelease Pharmaceuticals LLC [Member]
Schedule of Equity Method Investments [Line Items]
Equity Method Investment, Ownership Percentage					20.00%
Payments to Acquire Equity Method Investments	$ 200,000