Goodwill and Intangible Assets - Intangible Assets (Detail) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
Sep. 30, 2016	Dec. 31, 2015
Finite-Lived Intangible Assets [Line Items]
Intangible assets, Gross	$ 568,653	$ 168,847
Accumulated Amortization	(147,553)	(124,563)
Foreign Currency Translation	(1,289)	(257)
Intangible assets, net	419,811	44,027
Completed Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets, Gross	176,586	101,200
Accumulated Amortization	(89,912)	(82,330)
Foreign Currency Translation	(290)	(272)
Intangible assets, net	86,384	18,598
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets, Gross	280,344	37,251
Accumulated Amortization	(25,742)	(16,345)
Foreign Currency Translation	(954)	10
Intangible assets, net	253,648	20,916
Patents, Trademarks, Trade Names and Other [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets, Gross	104,824	30,396
Accumulated Amortization	(31,899)	(25,888)
Foreign Currency Translation	(26)	5
Intangible assets, net	72,899	$ 4,513
In-process Research and Development [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets, Gross	6,899
Foreign Currency Translation	(19)
Intangible assets, net	$ 6,880

Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275

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