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Income Taxes - Operating Loss Carryforwards (Details)
$ in Millions
Dec. 31, 2020
USD ($)
Operating Loss Carryforwards [Line Items]  
Operating loss carryforwards $ 99.5
2021-2024  
Operating Loss Carryforwards [Line Items]  
Operating loss carryforwards 0.1
2025-2037  
Operating Loss Carryforwards [Line Items]  
Operating loss carryforwards 19.6
Indefinite  
Operating Loss Carryforwards [Line Items]  
Operating loss carryforwards $ 79.8