Income Taxes - Components of Income Taxes (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Current
Federal	$ (904)	$ 4,592	$ (1,698)
Foreign	6,247	5,998	5,115
State and local	350	126	32
Current, Total	5,693	10,716	3,449
Deferred
Federal	801	2,316	2,986
Foreign	(608)	12	(914)
State and local	121	108	177
Deferred Total	314	2,436	2,249
Income taxes	$ 6,007	$ 13,152	$ 5,698