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Summary of Significant Accounting Policies - Schedule of Estimated Useful Life of Intangible Assets (Detail) | 12 Months Ended
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Dec. 31, 2014
Trademarks [Member] |
Finite-Lived Intangible Assets [Line Items] |
Intangible assets, Estimated useful life | 15 years
Customer Relationships [Member] |
Finite-Lived Intangible Assets [Line Items] |
Intangible assets, Estimated useful life | 5 years
Websites [Member] |
Finite-Lived Intangible Assets [Line Items] |
Intangible assets, Estimated useful life | 4 years
Domain Names [Member] |
Finite-Lived Intangible Assets [Line Items] |
Intangible assets, Estimated useful life | 4 years
Licensing Agreements [Member] |
Finite-Lived Intangible Assets [Line Items] |
Intangible assets, Estimated useful life | 1 year 9 months

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- Definition Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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