Income Taxes - Summary of Income Tax Provision/(Benefit) Relating to Continuing Operations (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Current provision/(benefit):
Domestic	$ 9,951	$ (1,069)	$ 3,466
Foreign	12,022	6,186	10,930
Total	21,973	5,117	14,396
Deferred provision/(benefit):
Domestic	3,041	535	4,183
Foreign	(803)	(459)	(1,699)
Total	2,238	76	2,484
Income tax expense	$ 24,211	$ 5,193	$ 16,880