Commitments And Contingencies - Additional Information (Detail) ft² in Thousands, $ in Thousands	Sep. 30, 2015 USD ($)	Sep. 01, 2015 ft²
Long-term Purchase Commitment [Line Items]
Operating Leases, Future Minimum Payments Due	$ 17,900
Area of Leased Property (in sq feet) | ft²		97
Non-cancelable purchase commitments
Long-term Purchase Commitment [Line Items]
Purchase commitments for less than one year	$ 26,932