Quarterly report pursuant to Section 13 or 15(d)

Derivative Instruments - Income Statement Effect of Gains and Losses Related to Derivative Instruments (Details)

v3.21.2
Derivative Instruments - Income Statement Effect of Gains and Losses Related to Derivative Instruments (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Derivative Instruments and Hedging Activities Disclosures [Line Items]        
Gains (losses), net on derivatives $ (10,413) $ 0 $ (10,413) $ 0
Natural Gas Swap        
Derivative Instruments and Hedging Activities Disclosures [Line Items]        
Gains (losses), net on derivatives (10,413) 0 (10,413) 0
Natural Gas Swap | Cost of energy        
Derivative Instruments and Hedging Activities Disclosures [Line Items]        
Gains (losses), net on derivatives 0 0 0 0
Natural Gas Swap | Gain (loss) on gas swap contracts | Swap Contract        
Derivative Instruments and Hedging Activities Disclosures [Line Items]        
Gains (losses), net on derivatives 64 0 64 0
Natural Gas Swap | Gain (loss) on warrant liabilities | Warrant        
Derivative Instruments and Hedging Activities Disclosures [Line Items]        
Gains (losses), net on derivatives $ (10,477) $ 0 $ (10,477) $ 0