CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2025	Sep. 30, 2024
Statement of Financial Position [Abstract]
Accounts receivable, allowance for credit losses	$ 49	$ 141
Common stock, par value (in dollars per share)	$ 0.50
Common stock, authorized shares (in shares)	40,000,000
Common stock, issued shares (in shares)	10,241,434	10,195,990
Treasury stock, shares (in shares)	167,900	167,900