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Summary of Significant Accounting Policies - Goodwill and Intangible Assets - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2015
Maximum [Member]
Summary Of Significant Accounting Policies [Line Items]
Intangible assets, useful life	10 years

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- Definition

Summary Of Significant Accounting Policies [Line Items]

+ References

No definition available.

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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.

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