Intangible Assets (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Jul. 31, 2015	Oct. 31, 2015	Oct. 31, 2014
Finite-Lived Intangible Assets [Line Items]
Estimated amortization expense		$ 2,048
Total amortization expense		232	$ 96
Developed Technology, Patents And Trademarks [Member]
Finite-Lived Intangible Assets [Line Items]
Total amortization expense		$ 612	215
Capitalized Software [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets, useful lives		5 years
Estimated amortization expense		$ 2,180
Capitalized software development costs during period		740	694
Patent Costs [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated amortization expense		$ 77
Software Development [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets, useful lives		5 years
Amortization expense in cost of equipment, supplies and accessories		$ 379	$ 117
Total amortization expense	$ 266
Impairment charge		$ 266
Maximum [Member] | Developed Technology, Patents And Trademarks [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets, useful lives		10 years
Maximum [Member] | Patent Costs [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets, useful lives		10 years
Maximum [Member] | Software Development [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets, useful lives		7 years
Minimum [Member] | Developed Technology, Patents And Trademarks [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets, useful lives		5 years
Minimum [Member] | Patent Costs [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets, useful lives		5 years