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Goodwill and Identified Intangible Assets - Summary of Goodwill and Identified Intangible Assets (Detail) - USD ($) $ in Thousands | 6 Months Ended |
--- | --- | ---
Jun. 30, 2017 | Dec. 31, 2016
Finite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | $ 85,483 | $ 85,175
Accumulated Amortization | (60,166) | (55,944)
Total future amortization expense | $ 25,317 | 29,231
Developed Technology |  |
Finite-Lived Intangible Assets [Line Items] |  |
Useful Life | 2 years 8 months 4 days |
Gross Carrying Amount | $ 31,708 | 31,707
Accumulated Amortization | (17,807) | (15,216)
Total future amortization expense | $ 13,901 | 16,491
Customer relationships/contracts [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Useful Life | 3 years 8 months 4 days |
Gross Carrying Amount | $ 44,643 | 44,384
Accumulated Amortization | (33,641) | (32,098)
Total future amortization expense | $ 11,002 | 12,286
Trademarks and Trade Names [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Useful Life | 2 years 8 months 4 days |
Gross Carrying Amount | $ 621 | 573
Accumulated Amortization | (207) | (119)
Total future amortization expense | 414 | 454
Maintenance agreements and related relationships [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | 5,500 | 5,500
Accumulated Amortization | (5,500) | (5,500)
Total future amortization expense | 0 | 0
Backlog |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | 3,011 | 3,011
Accumulated Amortization | (3,011) | (3,011)
Total future amortization expense | $ 0 | $ 0

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- Definition Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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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=66006027&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=66006027&loc=d3e16323-109275 + Details
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- Definition Amount after 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=66006027&loc=d3e16323-109275 + Details
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