General form of registration statement for all companies including face-amount certificate companies

Note 11 - 2022 Convertible Note Offering, Second Notes Offering, and Third Notes Offering (Tables)

Note 11 - 2022 Convertible Note Offering, Second Notes Offering, and Third Notes Offering (Tables)

9 Months Ended

12 Months Ended

Jun. 30, 2023

Sep. 30, 2022

Notes Tables

Schedule of Share-Based Payment Award, Warrants, Valuation Assumptions [Table Text Block]

		2022 Warrants				2022 Placement Agent Warrants
Closing price per share of Common Stock		$	79.84			$	79.84
Exercise price per share		$	79.52			$	80.48
Expected volatility			88.44	%			88.44	%
Risk-free interest rate			2.96	%			2.96	%
Dividend yield			-				-
Remaining expected term of underlying securities (years)			5.0				5.0

		Second Warrants				Second Placement Agent Warrants
Closing price per share of Common Stock		$	46.08			$	46.08
Exercise price per share		$	79.52			$	80.48
Expected volatility			111.31	%			111.31	%
Risk-free interest rate			3.43	%			3.43	%
Dividend yield			-				-
Remaining expected term of underlying securities (years)			5.0				5.0

		Third Warrants
Closing price per share of Common Stock		$	22.16
Exercise price per share		$	79.52
Expected volatility			114.33	%
Risk-free interest rate			3.46	%
Dividend yield			-
Remaining expected term of underlying securities (years)			5.0

		2022 Investor Warrants				2022 Placement Agent Warrants
Closing price per share of Common Stock		$	79.84			$	79.84
Exercise price per share		$	79.52			$	80.48
Expected volatility			88.44	%			88.44	%
Risk-free interest rate			2.96	%			2.96	%
Dividend yield			-				-
Remaining expected term of underlying securities (years)			5.0				5.0