Segment and Enterprise Wide Disclosures - Operations by Geographic Area (Details) (USD $) In Thousands, unless otherwise specified	4 Months Ended
	Jan. 31, 2015	Jan. 31, 2014	Sep. 30, 2014
Net Sales to Unaffiliated Customers
Net sales	$ 165,644	$ 170,594
United States
Net Sales to Unaffiliated Customers
Net sales	156,683	162,494
Long-Lived Assets
Long-Lived Assets	88,120		78,033
Foreign
Net Sales to Unaffiliated Customers
Net sales	8,961	8,100
Long-Lived Assets
Long-Lived Assets	$ 3,143		$ 3,100