Income Taxes - Provision for Income Taxes (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Other than U.S.:
Current	$ 45,752	$ 21,619	$ 54,410
Deferred	6,211	(1,546)	(5,359)
Total provision for income taxes	$ 51,963	$ 20,073	$ 49,051