Income Taxes - Provision for Income Taxes (Detail) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Current:
Federal	$ 124	$ (180)	$ (305)
State	93	108	116
International	2,103	1,525	2,958
Deferred:
International	734	(2,125)	1,318
Total provision for (benefit from) income taxes	$ 3,054	$ (672)	$ 4,087
Effective tax rate	(12.00%)	10.00%	(24.00%)

Amount of current federal tax expense (benefit) pertaining to income (loss) from continuing operations.

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