Segment and Enterprise Wide Disclosures - Operations by Geographic Area (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Sep. 30, 2013
Net Sales to Unaffiliated Customers
Net sales	$ 134,838	$ 135,264
Reportable Geographical Components | United States
Net Sales to Unaffiliated Customers
Net sales	129,554	128,818
Long-Lived Assets
Long-Lived Assets	55,102		53,992
Reportable Geographical Components | Foreign
Net Sales to Unaffiliated Customers
Net sales	5,284	6,446
Long-Lived Assets
Long-Lived Assets	$ 1,671		$ 1,799