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Income Taxes - Provision for Income Taxes (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Current provision:
Federal	$ 3,044	$ 1,555	$ 1,494
State	752	406	273
Foreign	797	751	807
Total current provision	4,593	2,712	2,574
Deferred provision (benefit):
Federal	(1,340)	(13)	317
State	(327)	(4)	96
Foreign	(326)	1,372	(264)
Total deferred provision (benefit)	(1,993)	1,355	149
Change in valuation allowance	172	7
Total provision for income taxes	$ 2,772	$ 4,074	$ 2,723

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