Components of Provision for Benefit from Income Taxes (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income Tax Disclosure [Abstract]
Federal	$ 84,743	$ 28,093	$ 5,060
State and local	5,323	3,011	1,496
Foreign	3,836	3,614	2,199
Current income tax expense, total	93,902	34,718	8,755
Federal	(17,741)	(20,367)	(6,084)
State and local	(8,770)	(4,982)	(2,658)
Foreign	(50,316)	(268)	(163)
Deferred income tax expense (benefit), total	(76,827)	(25,617)	(8,905)
Provision for (benefit from) income taxes	$ 17,075	$ 9,101	$ (150)