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
Mar. 31, 2022
Mar. 31, 2021
Dec. 31, 2021
Commitments and Contingencies      
Operating lease commitments $ 7,229   $ 3,852
Environmental expenses 700 $ 100  
Insurance proceeds receivable 2,300    
Purchase Commitments      
Commitments and Contingencies      
Purchase obligations and commitments 24,500    
Surface Use and Compensation      
Timing of future payments      
Remaining 2022 6,100    
2023 9,000    
2024 9,800    
2025 10,600    
2026 11,300    
Thereafter 4,500    
Fixed price power purchase contract      
Commitments and Contingencies      
Commitment obligations $ 8,600