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Income Taxes - Loss before Income Taxes (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Income Tax Disclosure [Abstract]      
Domestic $ (40,897) $ (109,837) $ (39,187)
Foreign (6,823) (601) (387)
Loss before income taxes $ (47,720) $ (110,438) $ (39,574)