Long-Lived Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2013
Property, Plant and Equipment
Gross property, plant and equipment	$ 429,459	$ 406,004
Less accumulated depreciation	(243,741)	(224,706)
Net property, plant and equipment	185,718	181,298
Depreciation expense	35,800	33,800	$ 32,100
Land and Land Improvements
Property, Plant and Equipment
Gross property, plant and equipment	$ 15,904	$ 15,298
Land and Land Improvements | Minimum
Property, Plant and Equipment
Estimated useful lives	15 years	15 years
Land and Land Improvements | Maximum
Property, Plant and Equipment
Estimated useful lives	40 years	40 years
Building and Building Improvements
Property, Plant and Equipment
Gross property, plant and equipment	$ 69,645	$ 69,018
Building and Building Improvements | Minimum
Property, Plant and Equipment
Estimated useful lives	5 years	5 years
Building and Building Improvements | Maximum
Property, Plant and Equipment
Estimated useful lives	40 years	40 years
Equipment and Vehicles
Property, Plant and Equipment
Gross property, plant and equipment	$ 239,759	$ 221,987
Equipment and Vehicles | Minimum
Property, Plant and Equipment
Estimated useful lives	3 years	3 years
Equipment and Vehicles | Maximum
Property, Plant and Equipment
Estimated useful lives	20 years	20 years
Dies and Molds
Property, Plant and Equipment
Gross property, plant and equipment	$ 85,880	$ 83,299
Dies and Molds | Minimum
Property, Plant and Equipment
Estimated useful lives	3 years	3 years
Dies and Molds | Maximum
Property, Plant and Equipment
Estimated useful lives	20 years	20 years
Construction in Progress
Property, Plant and Equipment
Gross property, plant and equipment	$ 18,271	$ 16,402