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Income Taxes - Income (Loss) Before Income Taxes (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Income (loss) from operations before income taxes    
Domestic $ (26,003) $ (22,050)
Foreign (774) (1,045)
Loss before income taxes $ (26,777) $ (23,095)