Note 14 - Asset Acquisitions (Details Textual) - USD ($) $ in Thousands				3 Months Ended				9 Months Ended
	Jan. 24, 2025	Jan. 24, 2025	Jan. 14, 2025	Sep. 30, 2025	Jun. 30, 2025	Mar. 31, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Stock Issued During Period, Value, Purchase of Assets					$ 280	$ 113
Acquired In-Process Research and Development Expense				$ 0			$ 0	$ 1,967	$ 0
PeriKard, LLC [Member]
Asset Acquisition, Percentage of Membership Interest Acquired	100.00%	100.00%
Stock Issued During Period, Shares, Purchase of Assets (in shares)			14,473
Stock Issued During Period, Value, Purchase of Assets	$ 113
Royalty Percentage		10.00%
Royalty, Term (Year)	5 years	5 years
Acquired In-Process Research and Development Expense								119
PeriKard, LLC [Member] | Acquired In-Process Research and Development Expense [Member]
Share-Based Payment Arrangement, Expense								113
Direct Transaction Costs								$ 6
IPR&D Asset [Member]
Stock Issued During Period, Shares, Purchase of Assets (in shares)								52,631
Stock Issued During Period, Value, Purchase of Assets								$ 300
Direct Transaction Costs								300
Debt Instrument, Face Amount				1,300				1,300
Asset Acquisition, Consideration Transferred, Related Cost				1,900				1,900
Asset Acquisition, Consideration Transferred, Transaction Cost								300
IPR&D Asset [Member] | Secured Debt [Member]
Convertible Debt				$ 1,300				$ 1,300