SUPPLEMENTAL BALANCE SHEET INFORMATION - Composition of Other Assets (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Sep. 30, 2022
Other Assets, Noncurrent [Abstract]
Long-term advances to suppliers	$ 3,681	$ 2,894
Funded status of defined benefit plan	3,036	1,573
Other	3,362	3,057
Other assets	$ 10,079	$ 7,524