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Segment Disclosure - Additional information (Detail) | 3 Months Ended | 6 Months Ended
--- | --- | ---
Apr. 30, 2016 Segment Customer | Apr. 30, 2015 Segment Customer | Apr. 30, 2016 Segment Customer | Apr. 30, 2015 Segment Customer
Segment Reporting Information [Line Items] |  |  |  |
Number of reportable operating segment | Segment | 1 | 1 | 1 | 1
Number of major customers | Customer | 1 | 1 | 1 | 1
Customer concentration risk | Revenues |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Percentage of revenues contributed by major customers | 14.50% | 12.30% | 13.80% | 11.80%

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- Definition For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 18 -URI http://asc.fasb.org/extlink&oid=51801978&loc=d3e6351-108592 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=49121117&loc=d3e13531-108611 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=51801978&loc=d3e6404-108592 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 21 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=49121117&loc=d3e13537-108611 + Details
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- Definition Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements. + References No definition available. + Details
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- Details
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- Details
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