Recent Accounting Pronouncements - Additional Information (Detail) - ASU No. 2016-09 [Member]	9 Months Ended
Sep. 30, 2016 USD ($)
Minimum [Member]
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Change in reclassification of tax withholding	$ 1,000,000
Maximum [Member]
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Change in reclassification of tax withholding	$ 2,000,000

Represents the quantification of the effect of adopting the new accounting standard or change in accounting principle expected by the entity to have a significant effect on the entity's financial statements.

No definition available.

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Balance Type:	credit
Period Type:	duration