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Income Taxes - Schedule of Loss Before Provision for Income Taxes (Detail) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Income Tax Disclosure [Abstract]      
United States $ (63,200) $ (69,769) $ (54,894)
Foreign 12,427 7,809 4,855
Total $ (50,773) $ (61,960) $ (50,039)