Note 9 - Stockholders' Equity (Tables)

6 Months Ended

Mar. 31, 2025

Notes Tables

Schedule of Stockholders Equity [Table Text Block]

		*Preferred Stock*								*Preferred Stock*								*Preferred Stock*								*Preferred Stock*
		*Series A*								*Series C*								*Series D*								*Total*
		*Shares*				*Amount*				*Shares*				*Amount*				*Shares*				*Amount*				*Shares*				*Amount*

Balance, October 1, 2024			648			$	1				458			$	—				363,097			$	363				364,203			$	364
Balance, March 31, 2025			648			$	1				458			$	—				363,097			$	363				364,203			$	364

Balance, January 1, 2025			648			$	1				458			$	—				363,097			$	363				364,203			$	364
Balance, March 31, 2025			648			$	1				458			$	—				363,097			$	363				364,203			$	364


Balance, October 1, 2023			648			$	1				1,211,757			$	1,212				363,097			$	363				1,575,502			$	1,576
Balance, March 31, 2024			648			$	1				1,211,757			$	1,212				363,097			$	363				1,575,502			$	1,576

Balance, January 1, 2024			648			$	1				1,211,757			$	1,212				363,097			$	363				1,575,502			$	1,576
Balance, March 31, 2024			648			$	1				1,211,757			$	1,212				363,097			$	363				1,575,502			$	1,576

Schedule of Conversions of Stock [Table Text Block]

Class		*Number of Shares*				*As converted to common stock*				*Votes/Share*		*Number of Votes*
Series A Preferred Stock			648				4			One/share			648
Series B Preferred Stock			0				0			One/share on an as-converted to common basis			0
Series C Preferred Stock			458				1			One/share on an as-converted to common basis			1
Series D Preferred Stock			363,097				1			One/share, only protective voting			363,097
Series E Preferred Stock			0				0			One/share on an as-converted to common basis			0