Quarterly report pursuant to Section 13 or 15(d)

Investment in Derivative Instruments - Balance Sheet Classification (Details)

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Investment in Derivative Instruments - Balance Sheet Classification (Details) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Sep. 30, 2021
Derivative Instruments and Hedging Activities Disclosures [Line Items]      
Net unrealized gain position $ 3,051   $ 967
Unrealized gain on derivative instruments 136 $ 1,165  
Prepaid Expenses and Other Current Assets | Commodity swap contracts      
Derivative Instruments and Hedging Activities Disclosures [Line Items]      
Derivative asset, fair value, gross asset 1,535   990
Other Assets | Designated as Hedging Instrument | Cash Flow Hedging      
Derivative Instruments and Hedging Activities Disclosures [Line Items]      
Unrealized gain on derivative instruments 1,917   0
Other Assets | Commodity swap contracts      
Derivative Instruments and Hedging Activities Disclosures [Line Items]      
Derivative asset, fair value, gross asset 0   822
Other Assets | Interest rate swap contracts      
Derivative Instruments and Hedging Activities Disclosures [Line Items]      
Derivative asset, fair value, gross asset 1,917   0
Accrued Expense and Other Current Liabilities | Interest rate swap contracts      
Derivative Instruments and Hedging Activities Disclosures [Line Items]      
Derivative liability, fair value, gross liability (51)   (97)
Other Long-term Liabilities | Designated as Hedging Instrument | Cash Flow Hedging      
Derivative Instruments and Hedging Activities Disclosures [Line Items]      
Unrealized gain on derivative instruments 0   (31)
Other Long-term Liabilities | Interest rate swap contracts      
Derivative Instruments and Hedging Activities Disclosures [Line Items]      
Derivative liability, fair value, gross liability $ (350)   $ (748)