Balance Sheets (unaudited) (Parenthetical) - USD ($)	Jun. 30, 2025	Sep. 30, 2024
Statement of Financial Position [Abstract]
Accounts receivable, allowance for credit losses	$ 27,000	$ 20,000
Common stock – no par value (in dollars per share)	$ 0	$ 0
Common stock - shares authorized	1,800	1,800
Common stock, shares issued	1,774	1,774
Common stock, shares outstanding	1,774	1,774