Note 1 - Nature of Business and Basis of Presentation - Restricted Cash (Details) - USD ($)	Jun. 30, 2023	Sep. 30, 2022
Cash and cash equivalents	$ 1,391,962	$ 1,341,127
Restricted cash	9,967	9,967
Total cash, cash equivalents, and restricted cash shown in the cash flow statement	$ 1,401,929	$ 1,351,094