Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements - Derivative Liabilities Measured on a Recurring Basis (Details)

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Fair Value Measurements - Derivative Liabilities Measured on a Recurring Basis (Details) - USD ($)
$ in Thousands
Jun. 30, 2022
Dec. 31, 2021
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Total derivative assets $ 4,965 $ 439
Total derivative liabilities 52,785 68,195
Fair Value, Recurring | Natural gas swap    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Total derivative assets 245  
Total derivative liabilities 55 178
Fair Value, Recurring | Interest rate swap    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Total derivative assets 4,720 439
Total derivative liabilities   727
Fair Value, Recurring | Warrant liabilities    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Total derivative liabilities 52,730 67,290
Level 1 | Fair Value, Recurring | Natural gas swap    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Derivative Asset, Before Netting 0  
Total Fair Value, Liability 0 0
Level 1 | Fair Value, Recurring | Interest rate swap    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Derivative Asset, Before Netting 0 0
Total Fair Value, Liability   0
Level 1 | Fair Value, Recurring | Warrant liabilities    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Total Fair Value, Liability 0 0
Level 2 | Fair Value, Recurring | Natural gas swap    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Derivative Asset, Before Netting 245  
Total Fair Value, Liability 55 178
Level 2 | Fair Value, Recurring | Interest rate swap    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Derivative Asset, Before Netting 4,720 439
Total Fair Value, Liability   727
Level 2 | Fair Value, Recurring | Warrant liabilities    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Total Fair Value, Liability 0 0
Level 3 | Fair Value, Recurring | Natural gas swap    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Derivative Asset, Before Netting 0  
Total Fair Value, Liability 0 0
Level 3 | Fair Value, Recurring | Interest rate swap    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Derivative Asset, Before Netting 0 0
Total Fair Value, Liability   0
Level 3 | Fair Value, Recurring | Warrant liabilities    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Total Fair Value, Liability $ 52,730 $ 67,290