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Description of Business and Summary of Significant Accounting Policies - Property and Equipment, Net (Details) | 12 Months Ended
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Dec. 31, 2017
Computer and network equipment | Minimum |
Property, Plant and Equipment [Line Items] |
Useful life, in years | 3 years
Computer and network equipment | Maximum |
Property, Plant and Equipment [Line Items] |
Useful life, in years | 5 years
Computer software |
Property, Plant and Equipment [Line Items] |
Useful life, in years | 3 years
Development costs | Minimum |
Property, Plant and Equipment [Line Items] |
Useful life, in years | 1 year
Development costs | Maximum |
Property, Plant and Equipment [Line Items] |
Useful life, in years | 5 years
Furniture and fixtures |
Property, Plant and Equipment [Line Items] |
Useful life, in years | 7 years

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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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- 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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- Details
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- Details
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- Details
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