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Goodwill and Intangible Assets - Intangible Assets (Parenthetical) (Detail) - USD ($) $ in Thousands |  |  | 12 Months Ended
--- | --- | --- | ---
Apr. 29, 2016 | Mar. 17, 2015 | Dec. 31, 2016 | Dec. 31, 2015
Finite-Lived Intangible Assets [Line Items] |  |  |  |
Acquired intangible assets | $ 404,506 |  |  |
Precisive, LLC [Member] |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |
Acquired intangible assets |  | $ 5,110 |  | $ 5,110
Precisive, LLC [Member] | Completed Technology [Member] |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |
Acquired intangible assets |  |  |  | 820
Precisive, LLC [Member] | Customer Relationships [Member] |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |
Acquired intangible assets |  | $ 1,430 |  | 1,430
Precisive, LLC [Member] | Patents, Trademarks, Trade Names and Other [Member] |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |
Acquired intangible assets |  |  |  | $ 2,860
Newport [Member] |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |
Acquired intangible assets |  |  | $ 404,506 |
Unfavorable lease commitments |  |  | 4,302 |
Newport [Member] | Completed Technology [Member] |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |
Acquired intangible assets |  |  | 75,386 |
Newport [Member] | Customer Relationships [Member] |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |
Acquired intangible assets | $ 247,793 |  | 247,793 |
Newport [Member] | Patents, Trademarks, Trade Names and Other [Member] |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |
Acquired intangible assets |  |  | $ 81,327 |

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