Long-Lived Assets (Details) (USD $)	12 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2011
Property, Plant and Equipment
Gross property, plant and equipment	$ 368,413,000	$ 346,713,000
Less accumulated depreciation	(208,794,000)	(187,007,000)
Net property, plant and equipment	159,619,000	159,706,000
Depreciation expense	32,100,000	30,800,000	41,900,000
Land and improvements
Property, Plant and Equipment
Gross property, plant and equipment	11,359,000	11,761,000
Land and improvements | Minimum
Property, Plant and Equipment
Estimated useful lives	15 years
Land and improvements | Maximum
Property, Plant and Equipment
Estimated useful lives	40 years
Buildings and improvements
Property, Plant and Equipment
Gross property, plant and equipment	61,760,000	59,433,000
Buildings and improvements | Minimum
Property, Plant and Equipment
Estimated useful lives	5 years
Buildings and improvements | Maximum
Property, Plant and Equipment
Estimated useful lives	40 years
Equipment and vehicles
Property, Plant and Equipment
Gross property, plant and equipment	204,438,000	190,649,000
Equipment and vehicles | Minimum
Property, Plant and Equipment
Estimated useful lives	3 years
Equipment and vehicles | Maximum
Property, Plant and Equipment
Estimated useful lives	20 years
Dies and molds
Property, Plant and Equipment
Gross property, plant and equipment	79,248,000	75,265,000
Dies and molds | Minimum
Property, Plant and Equipment
Estimated useful lives	3 years
Dies and molds | Maximum
Property, Plant and Equipment
Estimated useful lives	20 years
Construction in progress
Property, Plant and Equipment
Gross property, plant and equipment	$ 11,608,000	$ 9,605,000