Consolidated Condensed Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2024	Sep. 30, 2023
Accrued liabilities	$ 7,067	$ 6,477
Allowance for doubtful accounts	$ 131	$ 242
Serial preferred shares, shares authorized (in shares)	1,000,000	1,000,000
Serial preferred shares, shares issued (in shares)	0	0
Serial preferred shares, shares outstanding (in shares)	0	0
Common shares, par value (in dollars per share)	$ 1	$ 1
Common shares, shares authorized (in shares)	10,000,000	10,000,000
Common shares, shares issued (in shares)	6,190,000	6,105,000
Common shares, shares outstanding (in shares)	6,190,000	6,105,000
Director
Accrued liabilities	$ 760	$ 760