Quarterly report pursuant to Section 13 or 15(d)

Investment in Derivative Instruments (Details)

v3.23.1
Investment in Derivative Instruments (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Mar. 31, 2023
Mar. 31, 2022
Sep. 30, 2022
Derivative Instruments and Hedging Activities Disclosures [Line Items]          
Realized Gain (Loss) $ 2,463 $ (67) $ 4,399 $ (52)  
Unrealized Gain (Loss) (1,279) 1,994 (2,286) 2,130  
Total Gain (Loss) 1,184 1,927 2,113 2,078  
Net unrealized gain position 17,122   17,122   $ 25,245
Other Assets | Cash Flow Hedging | Designated as Hedging Instrument          
Derivative Instruments and Hedging Activities Disclosures [Line Items]          
Derivative asset, fair value 18,882   18,882   24,719
Commodity Swap | Prepaid Expenses and Other Current Assets          
Derivative Instruments and Hedging Activities Disclosures [Line Items]          
Derivative asset, fair value 0   0   1,032
Commodity Swap | Other Assets          
Derivative Instruments and Hedging Activities Disclosures [Line Items]          
Derivative asset, fair value 0   0   155
Commodity Swap | Accrued Expense and Other Current Liabilities          
Derivative Instruments and Hedging Activities Disclosures [Line Items]          
Derivative liabilities, fair value (1,760)   (1,760)   (601)
Commodity Swap | Other Long-Term Liabilities          
Derivative Instruments and Hedging Activities Disclosures [Line Items]          
Derivative liabilities, fair value 0   0   (60)
Interest Rate Swap | Other Assets          
Derivative Instruments and Hedging Activities Disclosures [Line Items]          
Derivative asset, fair value 18,882   18,882   $ 24,719
Cost of revenues          
Derivative Instruments and Hedging Activities Disclosures [Line Items]          
Realized Gain (Loss) 456 364 1,057 857  
Unrealized Gain (Loss) (1,279) 1,055 (2,286) 778  
Total Gain (Loss) (823) 1,419 (1,229) 1,635  
Interest expense, net          
Derivative Instruments and Hedging Activities Disclosures [Line Items]          
Realized Gain (Loss) 2,007 (431) 3,342 (909)  
Unrealized Gain (Loss) 0 939 0 1,352  
Total Gain (Loss) $ 2,007 $ 508 $ 3,342 $ 443