Detail of Selected Balance Sheet Accounts - Schedule of Property, Plant And Equipment (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Property, Plant and Equipment [Line Items]
Property, plant and equipment gross	$ 256,069	$ 249,702
Less: Accumulated depreciation	(116,649)	(104,725)
Total property, plant and equipment, net	139,420	144,977
Land
Property, Plant and Equipment [Line Items]
Property, plant and equipment gross	22,441	22,107
Buildings and improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment gross	$ 121,960	119,512
Buildings and improvements | Minimum
Property, Plant and Equipment [Line Items]
Asset lives	3 years
Buildings and improvements | Maximum
Property, Plant and Equipment [Line Items]
Asset lives	39 years
Machinery and equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment gross	$ 106,113	103,268
Machinery and equipment | Minimum
Property, Plant and Equipment [Line Items]
Asset lives	3 years
Machinery and equipment | Maximum
Property, Plant and Equipment [Line Items]
Asset lives	15 years
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Property, plant and equipment gross	$ 3,806	3,806
Furniture and fixtures | Minimum
Property, Plant and Equipment [Line Items]
Asset lives	3 years
Furniture and fixtures | Maximum
Property, Plant and Equipment [Line Items]
Asset lives	10 years
Construction in process
Property, Plant and Equipment [Line Items]
Property, plant and equipment gross	$ 1,749	$ 1,009