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Fair Value of Financial Instruments - Financial Instruments Measured at Fair Value on a Recurring Basis (Details) - USD ($)
Jun. 30, 2023
Dec. 31, 2022
Gas Derivatives    
Fair Value, Assets Measured on Recurring Basis, Financial Statement Captions [Line Items]    
Derivative Asset $ 16,913 $ 77,662,000
Level 1 | Gas Derivatives    
Fair Value, Assets Measured on Recurring Basis, Financial Statement Captions [Line Items]    
Derivative Asset 0 0
Level 1 | Interest Rate Swaps    
Fair Value, Assets Measured on Recurring Basis, Financial Statement Captions [Line Items]    
Derivative Asset 0 0
Level 2 | Gas Derivatives    
Fair Value, Assets Measured on Recurring Basis, Financial Statement Captions [Line Items]    
Derivative Asset (524,143,000) (1,904,830,000)
Level 2 | Interest Rate Swaps    
Fair Value, Assets Measured on Recurring Basis, Financial Statement Captions [Line Items]    
Derivative Asset 3,424,000 4,561,000
Level 3 | Gas Derivatives    
Fair Value, Assets Measured on Recurring Basis, Financial Statement Captions [Line Items]    
Derivative Asset 0 0
Level 3 | Interest Rate Swaps    
Fair Value, Assets Measured on Recurring Basis, Financial Statement Captions [Line Items]    
Derivative Asset $ 0 $ 0