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Income Taxes - Summary of Components of Loss from Continuing Operations Before Provision for Income Taxes (Detail) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Income Tax Disclosure [Abstract]    
Domestic $ 13,800 $ 16,707
Foreign 464 107
Loss before taxes $ 14,264 $ 16,814