Summary of Significant Accounting Policies (Details 4) (USD $) In Thousands, unless otherwise specified	0 Months Ended	12 Months Ended
	Jan. 02, 2007	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2011
Property, Plant and Equipment
Balance on revolver		$ 0
Impairment recognized		0	0
Research and Technical Costs
Research and technical expense		3,505	3,285	3,259
Pension and Postretirement Benefits
Maximum liability related to total retiree health care costs under plan amendment	$ 5,000
Building and improvements
Property, Plant and Equipment
Estimated economic useful lives		40 years
Machinery and equipment | Minimum
Property, Plant and Equipment
Estimated economic useful lives		5 years
Machinery and equipment | Maximum
Property, Plant and Equipment
Estimated economic useful lives		14 years
Office equipment and computer software | Minimum
Property, Plant and Equipment
Estimated economic useful lives		3 years
Office equipment and computer software | Maximum
Property, Plant and Equipment
Estimated economic useful lives		10 years
Land improvements
Property, Plant and Equipment
Estimated economic useful lives		20 years