Note 2 - Marketable Securities and Investment Other Securities (Tables)

12 Months Ended

Sep. 30, 2025

Notes Tables

Fair Value, Assets Measured on Recurring Basis [Table Text Block]

	In Active
	Markets for		Significant Other		Significant
	Identical Assets		Observable		Unobservable
	and Liabilities		Inputs		Inputs
	(Level 1)		(Level 2)		(Level 3)
Balance at September 30, 2023	$	-	$	-	$	(90,362	)
Change in value of contingent liability		-		-		90,362
Fair value of convertible notes				-		1,171,308
Balance at September 30, 2024		-		-		1,171,308
Fair value of convertible notes		-		-		(1,171,308	)
Balance at September 30, 2025	$	-	$	-	$	-