Segment and Geographic Information Geographical Information (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Jul. 31, 2012	Jul. 31, 2011	Jul. 31, 2012	Jul. 31, 2011	Oct. 31, 2011
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	$ 3,042	$ 4,204	$ 11,230	$ 12,293
Long-Lived Assets	942		942		1,031
Segment, Geographical, North America [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	1,369	1,953	3,524	4,941
Long-Lived Assets	491		491		438
Segment, Geographical, Europe and Other [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	1,556	1,950	7,244	6,756
Long-Lived Assets	447		447		588
Segment, Geographical, Asia [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	117	301	462	596
Long-Lived Assets	$ 4		$ 4		$ 5