Consolidated Balance Sheets (Parentheticals) - $ / shares	Sep. 30, 2024	Sep. 30, 2023
Common stock, par value (in dollars per share)	$ 5	$ 5
Common stock, shares authorized (in shares)	20,000,000	20,000,000
Common stock, shares issued (in shares)	10,249,899	10,015,254
Common stock, shares outstanding (in shares)	10,249,899	10,015,254
Preferred stock, par value (in dollars per share)	$ 0	$ 0
Preferred stock, shares authorized (in shares)	5,000,000	5,000,000
Preferred stock, shares issued (in shares)	0	0
Preferred stock, shares outstanding (in shares)	0	0