Income Taxes - Provision (Benefit) for Income Tax for Continuing Operations (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Current:
Federal	$ 100,714	$ 67,405	$ 46,270
State and local	12,445	12,837	8,678
Foreign	14,990	12,948	53,120
Current income tax provision (benefit) for continuing operations, Total	128,149	93,190	108,068
Deferred:
Federal	(6,730)	23,466	5,282
State and local	(763)	5,157	82
Foreign	(4,857)	(3,589)	(1,735)
Deferred income tax provision (benefit) for continuing operations, Total	(12,350)	25,034	3,629
Provision for income taxes	$ 115,799	$ 118,224	$ 111,697