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Other Events - Additional Information (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified | 0 Months Ended | 9 Months Ended
--- | --- | ---
Dec. 12, 2013 | Jul. 31, 2014 | Jul. 31, 2013
Other Events [Abstract] |  |  |
Dividend payment | $ 0.70 |  |
Dividend aggregate amount to shareholders | $ 11,000 | $ 11,005 | $ 9,646
Dividend paid date | Nov. 29, 2013 |  |

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- Definition Aggregate dividends paid during the period for each share of common stock outstanding. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 + Details
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