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Sales by Geographic Area (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Apr. 30, 2014	Apr. 30, 2013	Apr. 30, 2014	Apr. 30, 2013
Revenue, Major Customer [Line Items]
Sales revenue	$ 5,764	$ 8,847	$ 11,614	$ 18,742
United States
Revenue, Major Customer [Line Items]
Sales revenue	5,314	8,517	10,762	17,952
Canada
Revenue, Major Customer [Line Items]
Sales revenue	107	132	209	280
Israel
Revenue, Major Customer [Line Items]
Sales revenue	157	51	222	148
Mexico
Revenue, Major Customer [Line Items]
Sales revenue	136	87	258	278
All other
Revenue, Major Customer [Line Items]
Sales revenue	50	60	163	84
Foreign Countries, total
Revenue, Major Customer [Line Items]
Sales revenue	$ 450	$ 330	$ 852	$ 790

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X

- Definition

Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.1)

-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 1

-Article 5

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