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Goodwill and Intangible Assets - Intangible Assets (Parenthetical) (Detail) - USD ($) $ in Thousands			6 Months Ended	12 Months Ended
	Apr. 29, 2016	Mar. 17, 2015	Jun. 30, 2016	Dec. 31, 2015
Finite-Lived Intangible Assets [Line Items]
Acquired intangible assets	$ 394,804
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			$ 394,804
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	243,093		243,093
Newport [Member] | Patents, Trademarks, Trade Names and Other [Member]
Finite-Lived Intangible Assets [Line Items]
Acquired intangible assets			69,426
Newport [Member] | In-process Research and Development [Member]
Finite-Lived Intangible Assets [Line Items]
Acquired intangible assets	$ 6,899		$ 6,899

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