Accounts Receivable (Details) (USD $) In Millions, unless otherwise specified			9 Months Ended
	Jul. 31, 2013 customer	Oct. 31, 2012 customer	Jul. 31, 2013 Customer A and Customer B [Member] Customer Concentration Risk [Member] Accounts Receivable [Member]
Concentration Risk [Line Items]
Number of customers accounting for 10% of accounts receivable	2	0
Concentration risk, percentage			29.60%
Allowance for Doubtful Accounts [Abstract]
Allowance for doubtful accounts	$ 2.0	$ 1.5