Income Taxes - Component of Income Tax Provision (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Current:
Federal	$ 36,345	$ 36,205	$ 24,604
Foreign	15,204	13,603	6,339
State	6,237	10,302	6,532
Total	57,786	60,110	37,475
Deferred:
Federal	(25,083)	(9,697)	(6,986)
Foreign	(9,367)	(5,318)	(987)
State	(5,356)	1,432	(2,210)
Total	(39,806)	(13,583)	(10,183)
Provision for income taxes	$ 17,980	$ 46,527	$ 27,292