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Basis of Presentation and Significant Accounting Policies - Summary of Estimated Useful Lives Property and Equipment (Detail) | 12 Months Ended
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Dec. 31, 2017
Summary Of Significant Accounting Policies [Line Items] |
Property and equipment useful life | 7 years
Buildings [Member] | Minimum [Member] |
Summary Of Significant Accounting Policies [Line Items] |
Property and equipment useful life | 25 years
Buildings [Member] | Maximum [Member] |
Summary Of Significant Accounting Policies [Line Items] |
Property and equipment useful life | 40 years
Furniture and Fixtures [Member] | Minimum [Member] |
Summary Of Significant Accounting Policies [Line Items] |
Property and equipment useful life | 5 years
Furniture and Fixtures [Member] | Maximum [Member] |
Summary Of Significant Accounting Policies [Line Items] |
Property and equipment useful life | 10 years
Capitalized Software [Member] | Minimum [Member] |
Summary Of Significant Accounting Policies [Line Items] |
Property and equipment useful life | 2 years
Capitalized Software [Member] | Maximum [Member] |
Summary Of Significant Accounting Policies [Line Items] |
Property and equipment useful life | 7 years
Equipment [Member] | Minimum [Member] |
Summary Of Significant Accounting Policies [Line Items] |
Property and equipment useful life | 3 years
Equipment [Member] | Maximum [Member] |
Summary Of Significant Accounting Policies [Line Items] |
Property and equipment useful life | 7 years

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- Definition Summary Of Significant Accounting Policies [Line Items] + 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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