Provision for Income Taxes (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Current income tax expense (benefit):
Federal	$ 340	$ 4,140	$ 9,215
State and local	(71)	150	749
Foreign	9,224	24,672	32,844
Total current income tax expense	9,493	28,962	42,808
Deferred income tax expense (benefit):
Federal	(1,422)	15,207	(10,597)
State and local	20	2,308	(742)
Foreign	8,129	(12,449)	2,496
Total deferred income tax expense	6,727	5,066	(8,843)
Total tax expense	$ 16,220	$ 34,028	$ 33,965