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Income Taxes - Narrative (Details) - USD ($)
$ in Millions
Dec. 31, 2019
Dec. 31, 2018
Operating Loss Carryforwards [Line Items]    
Deferred tax assets, operating loss carryforwards, portion available after application of IRC Section 382 limitations $ 54.5  
Operating loss carry-forwards 8.3 $ 8.7
Operating loss, subject to expiration 37.3  
U.S. Federal, State and Local tax authorities    
Operating Loss Carryforwards [Line Items]    
Deferred tax assets, operating loss carry-forwards 108.8  
State and Local Jurisdiction    
Operating Loss Carryforwards [Line Items]    
Deferred tax assets, operating loss carry-forwards $ 64.5