Concentration Of Credit Risk (Detail) (Customer 1)	9 Months Ended
Jul. 31, 2012
Entity-Wide Revenue, Major Customer, Percentage	99.30%
Display Technology
Entity-Wide Revenue, Major Customer, Percentage	100.00%
Encryption Products and Services
Entity-Wide Revenue, Major Customer, Percentage	42.00%

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