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Summary of Significant Accounting Policies - Estimated Useful Lives of Property and Equipment (Detail)	3 Months Ended
	Mar. 31, 2015
Computer and Network Equipment [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Estimated life of property and equipment	5 years
Computer and Network Equipment [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Estimated life of property and equipment	7 years
Advertising Display Equipment [Member]
Property, Plant and Equipment [Line Items]
Estimated life of property and equipment	5 years
Furniture, fixtures and office equipment [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Estimated life of property and equipment	3 years
Furniture, fixtures and office equipment [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Estimated life of property and equipment	5 years
Vehicles [Member]
Property, Plant and Equipment [Line Items]
Estimated life of property and equipment	5 years

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- 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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- Details

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X

- Details

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