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Income Taxes - Summary of Loss Before Income Taxes (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Losses before income taxes:
U.S.	$ (23,408)	$ (16,174)
Non-U.S.	193	163
Total	$ (23,215)	$ (16,011)

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- Definition

The portion of earnings or loss from continuing operations before income taxes that is attributable to domestic operations.

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The portion of earnings or loss from continuing operations before income taxes that is attributable to foreign operations, which is defined as Income or Loss generated from operations located outside the entity's country of domicile.

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