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Income Taxes - Net Operating Loss Carryforwards (Details)
$ in Millions
Dec. 31, 2020
USD ($)
Domestic Tax Authority  
Operating Loss Carryforwards [Line Items]  
Operating loss carryforwards, begin to expire in the year 2030 $ 86.3
Operating loss carryforwards, indefinte carryforward period 19.7
State and Local Jurisdiction  
Operating Loss Carryforwards [Line Items]  
Operating loss carryforwards $ 85.0