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Income Taxes - Narrative (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Income Tax Disclosure [Abstract]        
Proceeds from income tax refunds     $ 24,900 $ 5,400
Revaluation of deferred tax liabilities $ (7,675) $ 0 (6,629) $ 0
Current tax liability $ 428,000   $ 428,000