Segment and Entity Wide Disclosures (Details 2) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Apr. 30, 2012	Apr. 30, 2011	Apr. 30, 2012	Apr. 30, 2011
Customer Concentration Risk [Member] | Sales Revenue, Goods, Net [Member]
Revenue, Major Customer [Line Items]
Revenue	$ 128,510	$ 108,263	$ 243,252	$ 216,922
Revenue, Net, Percentage	10.00%	10.00%	10.00%	10.00%
Customer Concentration Risk [Member] | Sales Revenue, Goods, Net [Member] | Company A [Member]
Revenue, Major Customer [Line Items]
Revenue	71,839	66,104	152,425	126,941
Customer Concentration Risk [Member] | Sales Revenue, Goods, Net [Member] | Company B [Member]
Revenue, Major Customer [Line Items]
Revenue	$ 56,671	$ 42,159	$ 90,827	$ 89,981
Maximum [Member] | Company B [Member]
Revenue, Major Customer [Line Items]
Revenue, Net, Percentage			10.00%