CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2023	Sep. 30, 2023
Statement of Financial Position [Abstract]
Accounts receivable, allowance for credit losses	$ 334	$ 284
Common stock, par value (in dollars per share)	$ 0.50	$ 0.50
Common stock, authorized shares (in shares)	40,000,000	40,000,000
Common stock, issued shares (in shares)	10,168,006	10,158,678
Treasury stock, shares (in shares)	167,900	167,900