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Fair Value Measurements (Quantitative Information Level 3 Measurements ) (Details) - USD ($)
$ in Thousands
Sep. 30, 2025
Dec. 31, 2024
Sep. 30, 2024
Dec. 31, 2023
Estimate of Fair Value Measurement        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Long-term debt, fair value $ 628,500 $ 635,400 $ 567,500  
Level 3 | Convertible preferred securities        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Asset fair value 18,190 14,190 15,725 $ 15,625
Implied based on market prices | Level 3 | Convertible preferred securities | Recurring        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Asset fair value $ 18,190 $ 14,190 $ 15,725