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Income Taxes (Narrative) (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Operating Loss Carryforwards [Line Items]      
Deferred tax asset $ 2.2 $ 1.5  
State income tax payments 0.1 0.1 $ 0.1
State and Local Jurisdiction      
Operating Loss Carryforwards [Line Items]      
Income tax expense (benefit) $ 0.1 $ 0.1 $ 0.1