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General - Fair Value Measurement (Details) - USD ($)
$ in Thousands
Jun. 30, 2024
Dec. 31, 2023
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Long-term debt, fair value $ 1,335,706 $ 1,394,412
Fair Value, Inputs, Level 2    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Long-term debt, fair value 1,319,532 1,378,683
Fair Value, Inputs, Level 3    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Long-term debt, fair value 16,174 15,729
Fair Value, Inputs, Level 1 | Supplemental Employee Retirement Plan    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Fair value of plan assets $ 2,639 $ 2,833