Income Taxes - Components of Income Tax Expense (Benefit) (Detail) - USD ($) $ in Thousands		12 Months Ended
	Dec. 31, 2016	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Current:
Federal		$ (30)	$ (30)	$ (132)
State		2	(2,863)	(16)
Foreign		7,178	3,817	2,777
Total current tax expense		7,150	924	2,629
Deferred:
Federal		(2,809)	(8,818)	(6,888)
State		(20)	(504)	(353)
Foreign		(879)	(274)	(2,715)
Total deferred tax expense (benefit)		(3,708)	(9,596)	(9,956)
Provision for (benefit from) income taxes	$ (10,300)	$ 3,442	$ (8,672)	$ (7,327)