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Stock-Based Compensation - Additional Information (Detail) | 9 Months Ended | 12 Months Ended
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Jul. 31, 2014 | Oct. 31, 2013
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract] |  |
Stock options granted | 0 | 0

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- Details
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Balance Type: | na
Period Type: | duration

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- Definition Gross number of share options (or share units) granted during the period. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
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Period Type: | duration