Property, Plant and Equipment (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Sep. 30, 2016
Property, Plant and Equipment [Line Items]
Property, Plant And Equipment, Gross	$ 767,606	$ 694,183
Less: accumulated depreciation	(291,253)	(250,527)
Property, Plant And Equipment, Net	476,353	443,656
Land [Member]
Property, Plant and Equipment [Line Items]
Property, Plant And Equipment, Gross	43,319	43,325
Building [Member]
Property, Plant and Equipment [Line Items]
Property, Plant And Equipment, Gross	279,876	251,700
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, Plant And Equipment, Gross	62,550	60,480
Machinery and Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, Plant And Equipment, Gross	94,317	88,943
Computer Systems and Software [Member]
Property, Plant and Equipment [Line Items]
Property, Plant And Equipment, Gross	167,992	154,291
Furniture and Fixtures [Member]
Property, Plant and Equipment [Line Items]
Property, Plant And Equipment, Gross	28,003	26,900
Equipment Leased to Other Party [Member]
Property, Plant and Equipment [Line Items]
Property, Plant And Equipment, Gross	86,933	35,968
Construction in Progress [Member]
Property, Plant and Equipment [Line Items]
Property, Plant And Equipment, Gross	$ 4,616	$ 32,576