PROPERTY, PLANT AND EQUIPMENT (Details) - Summary of Property Plant and Equipment - USD ($) $ in Thousands	Mar. 31, 2018	Sep. 30, 2017
Property, Plant and Equipment [Line Items]
Property plant and equipment gross	$ 655,559	$ 576,977
Accumulated depreciation and amortization	(364,043)	(344,842)
Total	291,516	232,135
Land, building and building improvements [Member]
Property, Plant and Equipment [Line Items]
Property plant and equipment gross	102,426	71,764
Machinery and equipment [Member]
Property, Plant and Equipment [Line Items]
Property plant and equipment gross	504,650	462,173
Leasehold improvements [Member]
Property, Plant and Equipment [Line Items]
Property plant and equipment gross	$ 48,483	$ 43,040