Note 1 - Organization and Summary of Significant Accounting Policies - Allowance for Credit Losses (Details) - USD ($)	12 Months Ended
	Sep. 30, 2025	Sep. 30, 2024
Credit Loss allowance - beginning of period	$ 346,197	$ 42,180
Credit loss provision	635,912	358,339
Write offs	(382,588)	(54,322)
Recoveries	0	0
Credit loss allowance - end of period	$ 599,521	$ 346,197