PROPERTY, PLANT AND EQUIPMENT (Details) - Summary of Property Plant and Equipment - USD ($) $ in Thousands	Dec. 31, 2016	Sep. 30, 2016
Property, Plant and Equipment [Line Items]
Property Plant And Equipment Gross	$ 992,596	$ 993,499
Accumulated depreciation and amortization	(592,445)	(588,095)
Total	400,151	405,404
Land, building and building improvements [Member]
Property, Plant and Equipment [Line Items]
Property Plant And Equipment Gross	140,441	138,204
Machinery and equipment [Member]
Property, Plant and Equipment [Line Items]
Property Plant And Equipment Gross	798,766	804,280
Leasehold improvements [Member]
Property, Plant and Equipment [Line Items]
Property Plant And Equipment Gross	$ 53,389	$ 51,015