Income Taxes - Components of Income Tax Expense (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Current income tax expense:
Federal	$ 54,447	$ 56,624	$ 28,289
State	8,942	7,380	5,544
Foreign	35,438	35,307	47,645
Current income tax expense	98,827	99,311	81,478
Deferred income tax expense (benefit):
Federal	10,620	(20,735)	143
State	878	(2,429)	75
Foreign	(2,568)	(3,468)	(7,045)
Deferred income tax expense (benefit)	8,930	(26,632)	(6,827)
Total income tax expense attributed to continuing operations	$ 107,757	$ 72,679	$ 74,651