Segment and Geographic Information Major Customers (Details) (Data Management Segment [Member], USD $) In Thousands, unless otherwise specified	3 Months Ended				9 Months Ended
	Jul. 31, 2012		Jul. 31, 2011		Jul. 31, 2012		Jul. 31, 2011
Customer revenues in excess of 10% - A [Member]
Revenue, Major Customer [Line Items]
Entity-Wide Revenue, Major Customer, Percentage	0.00%	[1]	11.00%		19.00%		10.00%
Entity-Wide Revenue, Major Customer Receivable Balance	$ 100		$ 255		$ 100		$ 255
Major Customer Industry					Telecommunications
Customer revenues in excess of 10% - B [Member]
Revenue, Major Customer [Line Items]
Entity-Wide Revenue, Major Customer, Percentage	0.00%	[1]	11.00%		0.00%	[1]	0.00%	[1]
Entity-Wide Revenue, Major Customer Receivable Balance	0		0		0		0
Major Customer Industry					Health Care
Customer revenues in excess of 10% - C [Member]
Revenue, Major Customer [Line Items]
Entity-Wide Revenue, Major Customer, Percentage	10.00%		0.00%	[1]	0.00%	[1]	0.00%	[1]
Entity-Wide Revenue, Major Customer Receivable Balance	$ 276		$ 0		$ 276		$ 0
Major Customer Industry					Telecommunications

[1] not in excess of 10% of trade accounts receivable