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Income Taxes - Details of Earnings Before Income Taxes (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Income Tax Disclosure [Abstract]      
Domestic $ 65,908 $ 62,639 $ 31,584
Foreign (927) (1,032) 4,268
Earnings before income taxes $ 64,981 $ 61,607 $ 35,852