Income Taxes - Components of Income Tax Expense (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Current income tax expense:
Federal	$ 62,499	$ 54,447	$ 56,624
State	8,392	8,942	7,380
Foreign	25,743	35,438	35,307
Current income tax expense	96,634	98,827	99,311
Deferred income tax expense (benefit):
Federal	(26,231)	10,620	(20,735)
State	(2,248)	878	(2,429)
Foreign	(1,732)	(2,568)	(3,468)
Deferred income tax expense (benefit)	(30,211)	8,930	(26,632)
Total income tax expense attributed to continuing operations	$ 66,423	$ 107,757	$ 72,679