Inventories - Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Inventory Disclosure [Abstract]
Additional amount that would have been reported in inventory if FIFO method had been used	$ 9,939	$ 9,210
LIFO expense (benefit)	729	924
Cost of goods sold	180	156
Net realizable value reserves	1,538	325
Idle costs	$ 3,087	$ 2,126