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Summary of Significant Accounting Policies - Additional Information (Detail)	9 Months Ended
	Sep. 30, 2015
Accounting Policies [Line Items]
Cash and cash equivalents original maturities	3 months
Minimum
Accounting Policies [Line Items]
Estimated useful lives of intangible assets	4 years
Maximum
Accounting Policies [Line Items]
Estimated useful lives of intangible assets	15 years

X

- Definition

Accounting policies.

+ References

No definition available.

+ Details

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X

- Definition

Cash and cash equivalents original maturities.

+ References

No definition available.

+ Details

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X

- 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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