v3.25.2
Financial Instruments and Risk Management - Carrying Value of Assets and Liabilities Recorded at Fair Value on Recurring Basis (Details) - Fair Value - USD ($)
$ in Thousands
Jun. 30, 2025
Dec. 31, 2024
Liabilities:    
Liabilities $ 20,100 $ 21,176
Commodity swaps    
Liabilities:    
Derivative liability 337 1,707
Nonqualified employee savings plan    
Liabilities:    
Nonqualified employee savings plan 19,763 19,469
Level 1    
Liabilities:    
Liabilities 19,763 19,469
Level 1 | Commodity swaps    
Liabilities:    
Derivative liability 0 0
Level 1 | Nonqualified employee savings plan    
Liabilities:    
Nonqualified employee savings plan 19,763 19,469
Level 2    
Liabilities:    
Liabilities 337 1,707
Level 2 | Commodity swaps    
Liabilities:    
Derivative liability 337 1,707
Level 2 | Nonqualified employee savings plan    
Liabilities:    
Nonqualified employee savings plan 0 0
Level 3    
Liabilities:    
Liabilities 0 0
Level 3 | Commodity swaps    
Liabilities:    
Derivative liability 0 0
Level 3 | Nonqualified employee savings plan    
Liabilities:    
Nonqualified employee savings plan $ 0 $ 0