Investment in Derivative Instruments (Tables)

3 Months Ended

Dec. 31, 2022

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Schedule of Derivatives Instruments Statements of Financial Performance and Financial Position, Location

The following table represents the approximate amount of realized and unrealized gains (losses) and changes in fair value recognized in earnings on commodity derivative contracts for the three months ended December 31, 2022 and 2021 and the fair value of these derivatives as of December 31, 2022 and September 30, 2022 (in thousands):

	For the Three Months Ended December 31,
			2022						2021
	(unaudited)						(unaudited)
	Change in						Change in
Income Statement Classification	Realized Gain (Loss)		Unrealized Gain (Loss)		Total Gain (Loss)		Realized Gain (Loss)		Unrealized Gain (Loss)		Total Gain (Loss)
Cost of revenues	$	601	$	(1,007)	$	(406)	$	493	$	(277)	$	216
Interest expense, net	1,335		—		1,335		(478)		413		(65)
Total	$	1,936	$	(1,007)	$	929	$	15	$	136	$	151

	December 31, 2022		September 30, 2022
Balance Sheet Classification	(unaudited)
Prepaid expenses and other current assets - commodity swaps	$	435	$	1,032
Other assets - commodity swaps	—		155
Other assets - interest rate swaps (1)	23,382		24,719
Accrued expense and other current liabilities - commodity swaps	(916)		(601)
Other long-term liabilities - commodity swaps	—		(60)
Net unrealized gain position	$	22,901	$	25,245

(1) Includes designated cash flow hedge of $23,382 and $24,719 as of December 31, 2022 and September 30, 2022, respectively.