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Basis of Presentation - Additional Information (Detail) | 12 Months Ended
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Dec. 31, 2014
First Quarter Fiscal Year 2014 [Member] |
Summary Of Significant Policies [Line Items] |
Guideline used to determine the end date of first quarter | 91 days
Fiscal Second Quarter 2014 [Member] |
Summary Of Significant Policies [Line Items] |
Reporting period | 91 days
Fiscal Third Quarter 2014 [Member] |
Summary Of Significant Policies [Line Items] |
Reporting period | 91 days

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- Definition Length Of Time Used To Determine Fiscal Period + References No definition available. + Details
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- Details
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- Definition Duration of a fiscal period, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Includes, but not limited to, weeks in a year or quarter. + References No definition available. + Details
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- Details
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- Details
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- Details
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