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Income Taxes - Loss before Provision for Income Taxes (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Income Tax Disclosure [Abstract]      
United States $ (6,256) $ (10,369) $ (12,497)
Foreign 11,995 9,508 5,526
Income (loss) before provision for income taxes $ 5,739 $ (861) $ (6,971)