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Fair Value Measurements (Narrative) (Details) - Senior Notes [Member] - USD ($)
$ in Millions
Mar. 31, 2024
Dec. 31, 2023
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt, long-term and short-term, combined carrying value $ 92.6 $ 95.7
Long-term debt, fair value 73.1 71.7
Long-term debt, face amount $ 74.3 $ 74.3
Debt Instrument, Interest Rate, Stated Percentage 8.25%