Intangible Assets (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Finite-Lived Intangible Assets
Gross carrying Amount	$ 465,541	$ 454,755
Accumulated amortization	274,787	237,207
Net carrying value	190,754	217,548
Developed Technology
Finite-Lived Intangible Assets
Gross carrying Amount	210,352	202,591
Accumulated amortization	147,349	126,077
Net carrying value	63,003	76,514
Trademarks and Trade names
Finite-Lived Intangible Assets
Gross carrying Amount	16,676	16,661
Accumulated amortization	13,483	12,617
Net carrying value	3,193	4,044
Customer Relationships
Finite-Lived Intangible Assets
Gross carrying Amount	219,080	216,918
Accumulated amortization	105,581	90,581
Net carrying value	113,499	126,337
Other
Finite-Lived Intangible Assets
Gross carrying Amount	19,433	18,585
Accumulated amortization	8,374	7,932
Net carrying value	$ 11,059	$ 10,653

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 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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