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Income Taxes - Provision for Income Taxes (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Current provision:
Federal	$ 1,555	$ 1,494	$ 1,101
State	406	273	159
Foreign	751	807	276
Total current provision	2,712	2,574	1,536
Deferred provision (benefit):
Federal	(13)	317	(205)
State	(4)	96	(73)
Foreign	1,379	(264)	64
Total deferred provision (benefit)	1,362	149	(214)
Total provision for income taxes	$ 4,074	$ 2,723	$ 1,322

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