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Provision for Income Taxes (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Current federal provision
State	$ 21
Deferred provision (benefit)
Federal	(901)	$ (2,531)
State	(153)	(397)
Foreign	(884)	(548)
Total income tax benefit	$ (1,917)	$ (3,476)

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