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Goodwill and Intangible Assets - Intangible Assets (Detail) - USD ($) $ in Thousands | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2015 | Dec. 31, 2014
Finite-Lived Intangible Assets [Line Items] |  |
Intangible assets, Gross | $ 168,847 | $ 163,737
Accumulated Amortization | (122,870) | (117,799)
Foreign Currency Translation | (330) | 451
Intangible assets, net | 45,647 | 46,389
Completed Technology [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Intangible assets, Gross | 101,200 | 100,380
Accumulated Amortization | (81,715) | (79,875)
Foreign Currency Translation | (286) | 135
Intangible assets, net | 19,199 | 20,640
Customer Relationships [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Intangible assets, Gross | 37,251 | 35,821
Accumulated Amortization | (15,435) | (12,634)
Foreign Currency Translation | (49) | 280
Intangible assets, net | 21,767 | 23,467
Patents, Trademarks, Trade Names and Other [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Intangible assets, Gross | 30,396 | 27,536
Accumulated Amortization | (25,720) | (25,290)
Foreign Currency Translation | 5 | 36
Intangible assets, net | $ 4,681 | $ 2,282

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- Definition Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References 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=26713463&loc=d3e16323-109275 + Details
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- Definition Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References 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=26713463&loc=d3e16323-109275 + Details
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