Quarterly report pursuant to Section 13 or 15(d)

Investment in Derivative Instruments (Details)

v3.23.2
Investment in Derivative Instruments (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Jun. 30, 2023
Jun. 30, 2022
Sep. 30, 2022
Derivative Instruments and Hedging Activities Disclosures [Line Items]          
Realized Gain (Loss) $ 1,407 $ 1,228 $ 3,692 $ 1,176  
Unrealized Gain (Loss) 878 459 (1,408) 2,589  
Total Gain (Loss) 2,285 1,687 2,284 3,765  
Net unrealized gain position 23,596   23,596   $ 25,245
Other Assets | Cash Flow Hedging | Designated as Hedging Instrument          
Derivative Instruments and Hedging Activities Disclosures [Line Items]          
Derivative asset, fair value 24,478   24,478   24,719
Commodity Swap | Prepaid Expenses and Other Current Assets          
Derivative Instruments and Hedging Activities Disclosures [Line Items]          
Derivative asset, fair value 16   16   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 (898)   (898)   (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 24,478   24,478   $ 24,719
Cost of revenues          
Derivative Instruments and Hedging Activities Disclosures [Line Items]          
Realized Gain (Loss) (970) 1,349 (2,027) 2,206  
Unrealized Gain (Loss) 878 143 (1,408) 921  
Total Gain (Loss) (92) 1,492 (3,435) 3,127  
Interest expense, net          
Derivative Instruments and Hedging Activities Disclosures [Line Items]          
Realized Gain (Loss) 2,377 (121) 5,719 (1,030)  
Unrealized Gain (Loss) 0 316 0 1,668  
Total Gain (Loss) $ 2,377 $ 195 $ 5,719 $ 638