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Summary of Significant Accounting Policies - Depreciation and Amortization of Property and Equipment, Useful Life (Detail)	12 Months Ended
	Dec. 31, 2015
Computers and Equipment [Member] | Minimum [Member]
Property Plant And Equipment [Line Items]
Property, Plant and Equipment, Estimated Useful Lives	3 years
Computers and Equipment [Member] | Maximum [Member]
Property Plant And Equipment [Line Items]
Property, Plant and Equipment, Estimated Useful Lives	10 years
Computer Software [Member] | Minimum [Member]
Property Plant And Equipment [Line Items]
Property, Plant and Equipment, Estimated Useful Lives	3 years
Computer Software [Member] | Maximum [Member]
Property Plant And Equipment [Line Items]
Property, Plant and Equipment, Estimated Useful Lives	5 years
Furniture and Fixtures [Member]
Property Plant And Equipment [Line Items]
Property, Plant and Equipment, Estimated Useful Lives	7 years
Leasehold Improvements [Member]
Property Plant And Equipment [Line Items]
Property, Plant and Equipment, Estimated Useful Lives	Shorter of asset life or lease term

X

- Definition

Describes the periods of time over which an entity anticipates to receive utility from its property, plant and equipment (that is, the periods of time over which an entity allocates the initial cost of its property, plant and equipment).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=51655414&loc=d3e18780-107790

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 35
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=51661791&loc=d3e1205-110223

+ Details

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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

No definition available.

+ Details

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X

- Definition

Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

+ References

No definition available.

+ Details

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- Details

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- Details

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