PROPERTY, PLANT AND EQUIPMENT (Details) - Summary of Property Plant and Equipment - USD ($) $ in Thousands	Mar. 31, 2016	Sep. 30, 2015
Property, Plant and Equipment [Line Items]
Property Plant And Equipment Gross	$ 960,110	$ 926,205
Accumulated depreciation and amortization	(574,001)	(546,233)
Total	386,109	379,972
Land, building and building improvements [Member]
Property, Plant and Equipment [Line Items]
Property Plant And Equipment Gross	131,200	131,546
Machinery and equipment [Member]
Property, Plant and Equipment [Line Items]
Property Plant And Equipment Gross	782,300	747,194
Leasehold improvements [Member]
Property, Plant and Equipment [Line Items]
Property Plant And Equipment Gross	$ 46,610	$ 47,465