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Income Taxes - Narrative (Details) - USD ($)
3 Months Ended 6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Dec. 31, 2020
Income Tax Disclosure [Abstract]          
Unrecognized Tax Benefits $ 9,700,000   $ 9,700,000   $ 9,700,000
Unrecognized Tax Benefits, Period Increase (Decrease) 0 $ 0 0 $ 0  
Interest and penalties $ 0 $ 0 $ 0 $ 0  
Effective income tax rate (as percent) 18.90% 15.20% 18.60% 9.50%  
Federal and State income tax statutory rate (as percent)     26.14% 26.14%  
Excess tax benefit $ 302,000 $ (272,000) $ 1,900,000 $ 590,000  
Effective Income Tax Rate Reconciliation, Other Adjustments, Amount       $ 22,400,000