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Summary of Significant Accounting Policies - Amortization of Intangible Assets, Useful Life (Detail) | 12 Months Ended
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Dec. 31, 2016
Customer Relationships [Member] | Minimum [Member] |
Finite Lived Intangible Assets [Line Items] |
Amortization of intangible assets, estimated useful life | 5 years
Customer Relationships [Member] | Maximum [Member] |
Finite Lived Intangible Assets [Line Items] |
Amortization of intangible assets, estimated useful life | 11 years
Research Content [Member] | Minimum [Member] |
Finite Lived Intangible Assets [Line Items] |
Amortization of intangible assets, estimated useful life | 1 year
Research Content [Member] | Maximum [Member] |
Finite Lived Intangible Assets [Line Items] |
Amortization of intangible assets, estimated useful life | 2 years
Technology [Member] |
Finite Lived Intangible Assets [Line Items] |
Amortization of intangible assets, estimated useful life | 7 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
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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
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
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Balance Type: |
Period Type: |

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