Income Taxes - Components of Provision for Income Taxes (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Current:
State, Current	$ 525	$ 257	$ 178
Foreign, Current	10,342	9,203	2,349
Total current	10,867	9,460	2,527
Deferred:
Foreign, Deferred	2,172	(56)	61
Total deferred	2,172	(56)	61
Provision for income taxes	$ 13,039	$ 9,404	$ 2,588