Consolidated Balance Sheets (Parentheticals) - $ / shares	Sep. 30, 2022	Sep. 30, 2021
Preferred stock, par value per share (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized	7,300,000	7,300,000
Preferred stock, shares issued	0	0
Preferred stock shares outstanding	0	0
Common stock, par value per share (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized	325,000,000	325,000,000
Common stock, shares issued	227,310,572	176,461,628
Common stock, shares outstanding	227,310,572	176,461,628
Series A convertible preferred stock
Convertible stock, par value (in dollars per share)	$ 0.01	$ 0.01
Convertible preferred stock, shares authorized	1,000,000	1,000,000
Convertible preferred stock, shares issued	0	0
Convertible preferred stock outstanding	0	0
Series A-1 convertible preferred stock
Convertible stock, par value (in dollars per share)	$ 0.01	$ 0.01
Convertible preferred stock, shares authorized	200,000	200,000
Convertible preferred stock, shares issued	0	0
Convertible preferred stock outstanding	0	0
Series B convertible preferred stock
Preferred stock, par value per share (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized	1,500,000	1,500,000
Preferred stock, shares issued	0	0
Preferred stock shares outstanding	0	0