PROPERTY, PLANT AND EQUIPMENT - Summary of Property Plant and Equipment (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Sep. 30, 2022
Property, Plant and Equipment [Line Items]
Property plant and equipment gross	$ 625,333	$ 706,961
Accumulated depreciation and amortization	(362,939)	(412,400)
Total	262,394	294,561
Land, building and building improvements
Property, Plant and Equipment [Line Items]
Property plant and equipment gross	158,500	159,693
Machinery and equipment
Property, Plant and Equipment [Line Items]
Property plant and equipment gross	430,953	511,779
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property plant and equipment gross	$ 35,880	$ 35,489