Business Combinations - Summary of Acquired Intangible Assets (Detail) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Business Acquisition [Line Items]
Acquired Intangibles, Net	$ 3,011	$ 3,266
Glip, Inc.
Business Acquisition [Line Items]
Gross Carrying Amount	3,850
Accumulated Amortization	839
Acquired Intangibles, Net	3,011
Glip, Inc. \| Customer Relationships
Business Acquisition [Line Items]
Gross Carrying Amount	840
Accumulated Amortization	345
Acquired Intangibles, Net	495
Glip, Inc. \| Developed Technology
Business Acquisition [Line Items]
Gross Carrying Amount	3,010
Accumulated Amortization	494
Acquired Intangibles, Net	$ 2,516

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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

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

+ References

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Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16212-109274

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph ((a)(1),(b))
-URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275

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