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Income Taxes - Summary of Loss Before Provision for Income Taxes (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Income Tax Disclosure [Abstract]    
Canada $ (55,446) $ (27,355)
Foreign 704 334
Loss before the provision for income taxes $ (54,742) $ (27,021)