Goodwill and Intangible Assets - Intangible Assets (Detail) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2016	Dec. 31, 2015
Finite-Lived Intangible Assets [Line Items]
Intangible assets, Gross	$ 573,353	$ 168,847
Accumulated Amortization	(160,813)	(124,563)
Foreign Currency Translation	(4,536)	(257)
Intangible assets, net	408,004	44,027
Completed Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets, Gross	176,586	101,200
Accumulated Amortization	(97,707)	(82,330)
Foreign Currency Translation	(1,068)	(272)
Intangible assets, net	77,811	18,598
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets, Gross	285,044	37,251
Accumulated Amortization	(29,709)	(16,345)
Foreign Currency Translation	(3,404)	10
Intangible assets, net	251,931	20,916
Patents, Trademarks, Trade Names and Other [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets, Gross	111,723	30,396
Accumulated Amortization	(33,397)	(25,888)
Foreign Currency Translation	(64)	5
Intangible assets, net	$ 78,262	$ 4,513

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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Amount of foreign currency translation gain (loss) which increases (decreases) assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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