Intangible Assets - Schedule of Amortizable Purchased Intangible Assets from Acquisition (Detail) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Finite-Lived Intangible Assets [Line Items]
Gross	$ 60,850	$ 42,520
Accumulated Amortization	(11,814)	(11,647)
Accumulated Impairment	(29,749)	(29,749)
Net	19,287us-gaap_FiniteLivedIntangibleAssetsNet	1,124us-gaap_FiniteLivedIntangibleAssetsNet
Total purchased intangible assets, net	21,327
Developed technologies
Finite-Lived Intangible Assets [Line Items]
Gross	29,670	26,000
Accumulated Amortization	(6,460)	(6,453)
Accumulated Impairment	(19,547)	(19,547)
Net	3,663	0
Trademarks and trade names
Finite-Lived Intangible Assets [Line Items]
Gross	17,440	12,800
Accumulated Amortization	(3,317)	(3,183)
Accumulated Impairment	(8,582)	(8,582)
Net	5,541	1,035
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Gross	10,020
Accumulated Amortization	(11)
Accumulated Impairment	0
Net	10,009
Other
Finite-Lived Intangible Assets [Line Items]
Gross	3,720	3,720
Accumulated Amortization	(2,026)	(2,011)
Accumulated Impairment	(1,620)	(1,620)
Net	74	89
Other
Finite-Lived Intangible Assets [Line Items]
Indefinite-lived intangible assets:	$ 2,040

Acquired Intangible Assets, Net (Excluding Goodwill)

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- Definition

Intangible assets impaired accumulated impairment loss.

+ References

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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)

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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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Amount of assets, excluding financial assets and goodwill, lacking physical substance and having a projected indefinite period of benefit.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

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