Consolidated Balance Sheets (Parentheticals) - $ / shares	Sep. 30, 2024	Sep. 30, 2023
Preferred stock, authorized (in shares)	1,000,000	1,000,000
Preferred stock, issued (in shares)	0	0
Preferred stock, outstanding (in shares)	0	0
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, authorized (in shares)	20,000,000	20,000,000
Common stock, issued (in shares)	14,206,082	14,030,481
Common stock, outstanding (in shares)	12,709,381	13,188,489
Treasury stock, shares (in shares)	1,496,701	841,992