PROPERTY, PLANT AND EQUIPMENT (Details) - Summary of Property Plant and Equipment - USD ($) $ in Thousands	Jun. 30, 2017	Sep. 30, 2016
Property, Plant and Equipment [Line Items]
Property plant and equipment gross	$ 1,040,475	$ 993,499
Accumulated depreciation and amortization	(630,003)	(588,095)
Total	410,472	405,404
Land, building and building improvements [Member]
Property, Plant and Equipment [Line Items]
Property plant and equipment gross	144,353	138,204
Machinery and equipment [Member]
Property, Plant and Equipment [Line Items]
Property plant and equipment gross	832,833	804,280
Leasehold improvements [Member]
Property, Plant and Equipment [Line Items]
Property plant and equipment gross	$ 63,289	$ 51,015