Income Taxes - Components of the Income Tax Expense (Benefit) (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Current:
Federal	$ 618	$ 2,278	$ 2,587
State	911	1,173	1,060
Foreign	2,399	1,763	2,159
Total current	3,928	5,214	5,806
Deferred:
Federal	(1,454)	2,111	5,550
State	(2,005)	667	700
Foreign	(498)	153	175
Total deferred	(3,957)	2,931	6,425
Income tax expense (benefit)	$ (29)	$ 8,145	$ 12,231