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Income Taxes - Components of Net Loss (Income) for Income Tax (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Components Of Income Tax Expense Benefit Continuing Operations [Abstract]    
U.S. $ 12,362 $ 7,980
Non-U.S. 1,768 1,801
Loss before income taxes $ 14,130 $ 9,781