Goodwill and Intangible Assets Intangible assets (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
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Net	$ 231		$ 231		$ 309
Amortization of intangible assets	26	26	78	164
Data Management Segment [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	610		610		610
Finite-Lived Intangible Assets, Accumulated Amortization	379		379		301
Finite-Lived Intangible Assets, Net	231		231		309
Developed Technology Rights [Member] | Data Management Segment [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	300		300		300
Finite-Lived Intangible Assets, Accumulated Amortization	220		220		175
Finite-Lived Intangible Assets, Net	80		80		125
Finite-Lived Intangible Asset, Useful Life			5 years
Customer Relationships [Member] | Data Management Segment [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	210		210		210
Finite-Lived Intangible Assets, Accumulated Amortization	86		86		68
Finite-Lived Intangible Assets, Net	124		124		142
Finite-Lived Intangible Asset, Useful Life			9 years
Trade Names [Member] | Data Management Segment [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	100		100		100
Finite-Lived Intangible Assets, Accumulated Amortization	73		73		58
Finite-Lived Intangible Assets, Net	$ 27		$ 27		$ 42
Finite-Lived Intangible Asset, Useful Life			5 years