Basis of Presentation - Additional Information (Detail) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016 USD ($)	Jun. 30, 2015 USD ($)	Jun. 30, 2016 USD ($) Segment	Jun. 30, 2015 USD ($)	Dec. 31, 2015 USD ($)
Nature Of Operations [Line Items]
Number of operating segments | Segment			2
Reclassification from operating expense to cost of revenues		$ 200		$ 300
Net foreign exchange losses resulting from foreign currency transactions included in other income	$ 19	$ 21	$ 35	$ 27
ASU 2015-17 [Member]
Nature Of Operations [Line Items]
Current deferred tax assets reclassified to long-term deferred tax assets					$ 1,800