CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2021	Sep. 30, 2021
Statement of Financial Position [Abstract]
Accounts receivable, allowance for doubtful accounts	$ 355	$ 391
Common stock, par value (in dollars per share)	$ 0.50	$ 0.50
Common Stock, Shares Authorized	20,000,000	20,000,000
Common Stock, Shares, Issued	9,614,683	9,613,525
Treasury stock, shares (in shares)	167,900	167,900