Note 4 - Letter Agreements (Details Textual) - CAR-T Company [Member] - USD ($) $ in Millions		1 Months Ended	3 Months Ended
	Jun. 27, 2022	Jul. 31, 2022	Jun. 30, 2022	Sep. 30, 2022	Jul. 01, 2022
Business Acquisition, Payment for Exclusive Right to Negoticate	$ 0.3
Deposit on Preferred Securities Investment		$ 2.7
Business Acquisition, Fee to Acquire Preferred Stock Equity Interest					$ 2.0
Business Acquisition, Percentage of Voting Interests to be Acquired					19.99%
Deposit on Investment in Equity Securities [Member]
Business Acquisition, Exclusive Right to Negotiate Fee				$ 2.7
Other R&D Expense [Member]
Business Acquisition, Payment for Exclusive Right to Negoticate			$ 0.3