Note 1 - Description of Business and Basis of Presentation (Tables)

9 Months Ended

Jun. 30, 2025

Notes Tables

Schedule of Impact of Reverse Stock Split on Shares of Common Stock [Table Text Block]

		*Reported in*				*Adjustment to*				*Adjustment to*				*Adjustment to*				*Adjustment to*				*Total*
		*10-K 2024*				*RSS 1:60 (February 2025)*				*RSS 1:100 (April 2025)*				*RSS 1:100 (June 2025)*				*RSS 1:250 (August 2025)*				*after RSSs*
Balance, September 30, 2023, number of shares of common stock			28,718				(28,239	)			(474	)			(4	)			-				1
Increase of common stock during fiscal year 2024			4,548,589				(4,472,780	)			(75,051	)			(750	)			(8	)			-
Balance, September 30, 2024, number of shares of common stock			4,577,307				(4,501,019	)			(75,525	)			(754	)			(8	)			1