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Note 6 - Significant Agreements and Contracts (Details Textual) $ in Millions	1 Months Ended			3 Months Ended		9 Months Ended		12 Months Ended
	Jun. 30, 2024	Feb. 29, 2024 USN ($)	Aug. 31, 2014 USD ($)	Sep. 30, 2024 USD ($)	Sep. 30, 2023 USD ($)	Sep. 30, 2024 USD ($)	Sep. 30, 2023 USD ($)	Dec. 31, 2025 USD ($)	Dec. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)	Aug. 31, 2024 USD ($)	Jan. 31, 2023 USD ($)	Jan. 01, 2023 USN ($)
Research and Development Expense				$ 5,125,097	$ 1,791,487	$ 11,711,746	$ 5,583,149
Revenues				1,939,751	1,526,482	7,575,972	4,654,294
Vertex Option and License Agreement [Member]
Research and Development Expense			$ 100,000
Contractual Obligation					117,000,000		117,000,000
Payments for License Agreement			$ 100,000
National Institute of Aging Grant [Member]
Government Assistance, Asset											$ 300,000	$ 21,000,000	$ 21.3
Government Assistance, Income, Increase (Decrease)		$ 7.3								$ 6,700,000
Revenues				1,900,000	$ 1,500,000	7,600,000	$ 4,700,000
Proceeds From Grants						14,500,000
Grant Funding Remaining				$ 6,800,000		$ 6,800,000
Grant Amount, Received, Parentage	10.00%	90.00%
National Institute of Aging Grant [Member] \| Forecast [Member]
Government Assistance, Income, Increase (Decrease)								$ 6,200,000	$ 8,400,000