Concentrations Narrative (Details)	12 Months Ended
Oct. 31, 2012	Oct. 31, 2011	Oct. 31, 2010
Revenue, Major Customer [Line Items]
Entity-Wide Revenue, Major Customer, Percentage	80.00%	83.00%	86.00%
Entity-Wide Accounts Receivable, Major Customer, Percentage	79.00%	81.00%

Percentage of revenue generated from a single external customer that accounts for 10 percent or more of an entity's revenues.

No definition available.

Name:	us-gaap_EntityWideRevenueMajorCustomerPercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration