Quarterly report pursuant to Section 13 or 15(d)

Commitments and Contingencies (Details)

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Commitments and Contingencies (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2024
Sep. 30, 2023
Sep. 30, 2024
Sep. 30, 2023
Dec. 31, 2023
Commitments and Contingencies          
Environmental expenses $ 100 $ 1,100 $ 800 $ 4,000  
Environmental Remediation Expense, before Recovery, Statement of Income or Comprehensive Income [Extensible Enumeration] Direct Operating Costs Direct Operating Costs Direct Operating Costs Direct Operating Costs  
Accrued insurance proceeds and third-party receivables $ 7,000   $ 7,000   $ 5,700
Insurance proceeds and third-party receivables included in Other Receivables 5,427   5,427   4,064
Insurance proceeds and third-party receivables included in Other Assets 1,600   $ 1,600   $ 1,600
Delivery Commitment          
Commitments and Contingencies          
Remaining commitment agreement term     5 years 8 months 12 days    
Remaining minimum commitment 21,700   $ 21,700    
Purchase Obligations          
Commitments and Contingencies          
Purchase obligations and commitments $ 4,600   $ 4,600