Note 3 - Revenue Recognition - Schedule of Allowance for Credit Losses on Accounts Receivable (Details) - USD ($)	12 Months Ended
	Sep. 30, 2025	Sep. 30, 2024
Balance - beginning of period	$ 432,904
Increase to provision for credit losses	433,721
Write offs charged against allowance	(270,566)	$ (111,324)
Balance - end of period	$ 596,059	$ 432,904