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Quarterly Financial Data (Unaudited) - Additional Information (Detail) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Oct. 31, 2015 | Jul. 31, 2015 | Jan. 31, 2015 | Oct. 31, 2014 | Apr. 30, 2014 | Oct. 31, 2015 | Oct. 31, 2014 | Oct. 31, 2013
Quarterly Financial Information Disclosure [Abstract] |  |  |  |  |  |  |  |
Severance and restructuring costs | $ 9,092 | $ 2,319 |  | $ 1,273 | $ 1,278 | $ 11,411 | $ 2,551 | $ 1,126
Other income on legal settlement. | $ 1,608 |  |  |  |  |  |  |
Pre-tax loss on pension settlement |  |  | $ (1,572) |  |  |  |  |
Income tax provision including discrete tax benefit |  |  | $ 1,786 |  |  | $ 2,486 |  | $ 1,700
Pre-tax gain on property insurance settlement. |  |  |  | $ 1,005 |  |  |  |

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- Definition Additional tax benefit related to prior year. + References No definition available. + Details
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- Definition Gain loss on property insurance settlement. + References No definition available. + Details
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- Definition Amount of net gain (loss) recognized in net periodic benefit cost as a result of an irrevocable action that relieves the employer (or the plan) of primary responsibility for a benefit obligation and eliminates significant risks related to the obligation and the assets used to effect the settlement. Examples of transactions that constitute a settlement include, but are not limited to, lump-sum cash payments to plan participants in exchange for their rights to receive specified benefits and purchasing nonparticipating annuity contracts to cover vested benefits. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 30 -Section 15 -Paragraph 6 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=7577095&loc=d3e8001-114927 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (h)(7) -URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e1928-114920 + Details
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- Definition Amount of judgment or settlement awarded to (against) the entity in respect of litigation. + References No definition available. + Details
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- References No definition available. + Details
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- Definition The aggregate amount provided for estimated restructuring charges, remediation costs, and asset impairment loss during an accounting period. Generally, these items are either unusual or infrequent, but not both (in which case they would be extraordinary items). + 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 210.5-03.3) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 + Details
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