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Income Taxes - Schedule of Income From Continuing Operations 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 $ 228,181 $ 430,253 $ 375,408
Foreign 24,145 20,636 19,620
Income from continuing operations before income taxes $ 252,326 $ 450,889 $ 395,028