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Income Taxes - Domestic and Foreign Components of Income Before Income Taxes (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Income Tax Disclosure [Abstract]      
Domestic $ 14,544 $ 36,157 $ (16,583)
Foreign 66,102 18,921 48,848
Income before income taxes $ 80,646 $ 55,078 $ 32,265