Property, Plant and Equipment (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Sep. 30, 2014
Property Plant And Equipment [Abstract]
Land and land improvements	$ 8,714	$ 8,828
Buildings and building improvements	30,955	30,255
Machinery and equipment	44,905	46,806
Furniture and fixtures	1,260	1,399
Transportation equipment	29	30
Tools and molds	1,864	1,629
Leasehold improvements	43	71
Construction in progress	6,135	3,226
Property plant and equipment gross	93,905	92,244
Accumulated depreciation	(45,196)	(43,039)
Property plant and equipment net	$ 48,709	$ 49,205