Goodwill and Intangible Assets, Net - Components of Intangible Assets (Detail) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
Sep. 30, 2015	Dec. 31, 2014
Finite Lived Intangible Assets [Line Items]
Weighted average remaining useful life	3 years 7 months 6 days
Gross	$ 17,191	$ 17,191
Accumulated amortization	(13,305)	(12,095)
Net	$ 3,886	$ 5,096
Customer Relationships [Member]
Finite Lived Intangible Assets [Line Items]
Weighted average remaining useful life	1 year 9 months 18 days	2 years 6 months
Gross	$ 13,997	$ 13,997
Accumulated amortization	(11,547)	(10,498)
Net	$ 2,450	$ 3,499
Trade Name [Member]
Finite Lived Intangible Assets [Line Items]
Weighted average remaining useful life	6 years 9 months 18 days	7 years 6 months
Gross	$ 3,194	$ 3,194
Accumulated amortization	(1,758)	(1,597)
Net	$ 1,436	$ 1,597

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=26713463&loc=d3e16323-109275

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- Definition

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

+ References

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

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- Definition

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

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- Definition

Remaining amortization period of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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