PROPERTY, PLANT AND EQUIPMENT - Schedule of Property Plant and Equipment (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Sep. 30, 2023
Property, Plant and Equipment [Line Items]
Property plant and equipment gross	$ 630,538	$ 651,635
Accumulated depreciation	(363,201)	(372,417)
Total	267,337	279,218
Land, building and building improvements
Property, Plant and Equipment [Line Items]
Property plant and equipment gross	140,457	169,923
Machinery and equipment
Property, Plant and Equipment [Line Items]
Property plant and equipment gross	455,176	447,972
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property plant and equipment gross	$ 34,905	$ 33,740