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Debt (6.000% Senior Notes due 2026) (Details) - USD ($)
9 Months Ended
Sep. 30, 2023
Dec. 31, 2022
Aug. 19, 2022
6.00% Senior Notes due 2026      
Debt Instrument [Line Items]      
Debt instrument, face amount $ 239,100,000    
Debt instrument maturity year 2026    
Stated interest rate 6.00% 6.00% 6.00%
Long-term debt $ 110,900,000    
9.500% Private Second Lien Notes due 2028      
Debt Instrument [Line Items]      
Debt instrument, face amount $ 239,100,000    
Debt instrument, maturity date Dec. 31, 2028    
Stated interest rate 9.50%