Note 6 - Treasury Stock and Net (Loss) Income Per Common Share (Details Textual) - USD ($) $ in Millions	1 Months Ended	3 Months Ended		9 Months Ended
	Jun. 30, 2022	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Receipt of Donated Treasury Stock, Shares (in shares)	3,720
Value of Donated Treasury Shares	$ 1
Common Stock, Shares, Outstanding, Ending Balance (in shares)	1,377,026	1,377,026		1,377,026
Weighted Average Number of Shares Outstanding, Basic, Total (in shares)		1,380,133	1,380,746	1,380,542	1,380,746