Inventories - Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Inventory Disclosure [Abstract]
Additional amount that would have been reported in inventory if FIFO method had been used	$ 9,634	$ 9,939
LIFO (benefit) expense	(305)	729
Cost of goods sold	1,476	180
Net realizable value reserves	669	1,538
Obsolete and excess inventory valuation reserves, net of writedown	3,380	3,546
Idle costs	$ 2,149	$ 3,087