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Income Taxes - Schedule of Unrecognized Tax Benefits (Footnote) (Details) - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Income Tax Contingency [Line Items]        
Unrecognized Tax Benefits $ 20,638 $ 10,589 $ 9,622 $ 2,281
Income Tax Receivables        
Income Tax Contingency [Line Items]        
Unrecognized Tax Benefits 7,800      
Other Liabilities        
Income Tax Contingency [Line Items]        
Unrecognized Tax Benefits $ 12,800