Rate Reconciliation Between Amount of Income Tax Provision (Benefit) at Federal Rate and Provision (Benefit) from Taxes on Income (Loss) Before Income Taxes (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Tax Disclosure [Abstract]
Income tax provision (benefit) computed at the federal rate of 35%									$ (114,100)	$ (99,496)	$ 58,489
Increase (reduction) in income taxes resulting from:
State and local income taxes (benefit), net of federal income tax									742	6,337	3,090
Non-controlling interest									(1,619)	(938)	(6,552)
Unrecognized tax benefits									241	6,985
Valuation allowance										(11,205)
Non-deductible executive compensation									1,330	645	1,018
Foreign Earnings (rate differential)									37,674	349	(8,472)
Other, net									(760)	1,979	715
Provision (benefit) for income taxes	$ (104,723)	$ 9,931	$ 7,692	$ 10,608	$ (140,427)	$ 6,275	$ 11,536	$ 27,272	$ (76,492)	$ (95,344)	$ 48,288