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Income Taxes - Summary of Income Before Income Taxes (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Income Tax Disclosure [Abstract]      
United States $ 9,048    
Foreign 247    
Income before income taxes $ 9,295 $ 17,820 $ 18,125