Income Tax Provision (Benefit) for Federal, and State and Local Income Taxes (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Current:
Current income tax expense, Federal	$ (609)	$ (1,152)
Current income tax expense, State and local	(61)	986
Current income tax expense, Foreign	9,212	8,358
Total current	8,542	8,192
Deferred:
Deferred income tax expense, Federal	(4,950)	(93,376)
Deferred income tax expense, State and local	(1,967)	(93)
Deferred income tax expense, Foreign	4,913	(10,700)
Total deferred	(2,004)	(104,169)
Total benefit	$ 6,538	$ (95,977)