Goodwill and Intangible Assets - Intangible Assets (Detail) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
Mar. 31, 2017	Dec. 31, 2016
Finite-Lived Intangible Assets [Line Items]
Intangible assets, Gross	$ 573,353	$ 573,353
Accumulated Amortization	(173,491)	(160,813)
Foreign Currency Translation	(3,453)	(4,536)
Intangible assets, net	396,409	408,004
Completed Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets, Gross	176,586	176,586
Accumulated Amortization	(103,127)	(97,707)
Foreign Currency Translation	(746)	(1,068)
Intangible assets, net	72,713	77,811
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets, Gross	285,044	285,044
Accumulated Amortization	(34,246)	(29,709)
Foreign Currency Translation	(2,634)	(3,404)
Intangible assets, net	248,164	251,931
Patents, Trademarks, Trade Names and Other [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets, Gross	111,723	111,723
Accumulated Amortization	(36,118)	(33,397)
Foreign Currency Translation	(73)	(64)
Intangible assets, net	$ 75,532	$ 78,262

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

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

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