Income Taxes - Reconciliation of Income Tax Expense (Benefit) for Continuing Operations (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income Tax Disclosure [Abstract]
Income tax provision at 35%	$ 116,910	$ 121,982	$ 74,540
Expiration of capital loss carryforward	18,376
Valuation allowance	(18,200)	1,382	4,001
State and local income tax, net of federal income tax effect	12,321	7,123	4,414
Domestic manufacturing deduction	(6,580)	(3,745)	(1,925)
U.S. tax credits	(3,186)	(1,455)	(2,334)
Tax law or rate change	2,383		3,702
Difference in effective tax rates of international operations	(932)	(35,095)	(9,633)
Other - net	(2,868)	(262)	6,641
Tax on gain from sale of CCT		21,767
Provision for income taxes	$ 118,224	$ 111,697	$ 79,406