Investment in Derivative Instruments (Tables)

12 Months Ended

Sep. 30, 2024

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 fiscal years ended September 30, 2024, 2023 and 2022 and the fair value of these derivatives as of September 30, 2024 and 2023 (in thousands):

	For the Fiscal Year Ended September 30,
			2024						2023						2022
	Change in						Change in						Change in
	Realized Gain (Loss)		Unrealized Gain (Loss)		Total Gain (Loss)		Realized Gain (Loss)		Unrealized Gain (Loss)		Total Gain (Loss)		Realized Gain (Loss)		Unrealized Gain (Loss)		Total Gain (Loss)
Cost of revenues	$	(61)	$	(184)	$	(245)	$	(2,255)	$	(342)	$	(2,597)	$	3,472	$	(1,286)	$	2,186
Interest expense, net	10,630		—		10,630		8,297		—		8,297		(806)		1,668		862
Total	$	10,569	$	(184)	$	10,385	$	6,042	$	(342)	$	5,700	$	2,666	$	382	$	3,048

	September 30,
Balance Sheet Classification	2024		2023
Prepaid expenses and other current assets - commodity swaps(2)	$	—	$	204
Other assets - interest rate swap (1)	11,646		26,909
Accrued expense and other current liabilities - commodity swaps(2)	—		(20)
Net unrealized gain position	$	11,646	$	27,093

(1) Represents designated cash flow hedge of $11.6 million and $26.9 million as of September 30, 2024 and 2023, respectively.

(2) Represents derivatives not designated as hedges.