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Significant Accounting Policies - Weighted Average Useful Lives for Each Major Category of Amortizable Intangible Assets (Detail) | 12 Months Ended
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Oct. 31, 2016
Patent/Technology Costs [Member] |
Finite Lived Intangible Assets [Line Items] |
Weighted average useful lives for each major category of amortizable intangible assets | 13 years
Customer Relationships [Member] |
Finite Lived Intangible Assets [Line Items] |
Weighted average useful lives for each major category of amortizable intangible assets | 14 years
Noncompete Agreements [Member] |
Finite Lived Intangible Assets [Line Items] |
Weighted average useful lives for each major category of amortizable intangible assets | 3 years
Trade Names [Member] |
Finite Lived Intangible Assets [Line Items] |
Weighted average useful lives for each major category of amortizable intangible assets | 16 years

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- Definition Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
Name: | us-gaap_FiniteLivedIntangibleAssetUsefulLife
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_FiniteLivedIntangibleAssetsLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis=us-gaap_PatentedTechnologyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis=us-gaap_CustomerRelationshipsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis=us-gaap_NoncompeteAgreementsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis=us-gaap_TradeNamesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |