Segment and Enterprise Wide Disclosures - Operations by Geographic Area (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Sep. 30, 2013
Net Sales to Unaffiliated Customers
Net sales	$ 134,020	$ 141,886	$ 394,911	$ 412,009
United States
Net Sales to Unaffiliated Customers
Net sales	126,775	134,724	374,971	391,314
Long-Lived Assets
Long-Lived Assets	68,144		68,144		53,992
Foreign
Net Sales to Unaffiliated Customers
Net sales	7,245	7,162	19,940	20,695
Long-Lived Assets
Long-Lived Assets	$ 2,365		$ 2,365		$ 1,799