Investment in Derivative Instruments (Tables)

12 Months Ended

Sep. 30, 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 fiscal years ended September 30, 2022, 2021 and 2020 and the fair value of these derivatives as of September 30, 2022 and 2021 (in thousands):

	For the Fiscal Year Ended September 30,
			2022						2021						2020
	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	$	3,472	$	(1,286)	$	2,186	$	830	$	2,315	$	3,145	$	(432)	$	(503)	$	(935)
Interest expense, net	(806)		1,668		862		(890)		894		4		(388)		(1,397)		(1,785)
Total	$	2,666	$	382	$	3,048	$	(60)	$	3,209	$	3,149	$	(820)	$	(1,900)	$	(2,720)

	September 30,
Balance Sheet Classification	2022		2021
Prepaid expenses and other current assets - commodity swaps	$	1,032	$	990
Other assets - commodity swaps	155		822
Other assets - interest rate swap (1)	24,719
Accrued expense and other current liabilities - commodity swaps	(601)		—
Accrued expense and other current liabilities - interest rate swaps	—		(97)
Other long-term liabilities - commodity swaps	(60)		—
Other long-term liabilities - interest rate swaps (2)	—		(748)
Net unrealized gain (loss) position	$	25,245	$	967

(1) Includes designated cash flow hedge of $24,719 as of September 30, 2022.

(2) Includes designated cash flow hedge of $(31) as of September 30, 2021.