Fair Value Measurements (Tables)

12 Months Ended

Sep. 30, 2021

Fair Value Disclosures [Abstract]

Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis

The following table presents the Company’s financial assets and liabilities that were accounted for at fair value on a recurring basis as of September 30, 2021 and 2020, by level within the fair value hierarchy:

	September 30, 2021
	Level 1		Level 2		Level 3		Total
	(In thousands)
Financial assets:
Commodity derivative assets	$	—	$	308	$	—	$	—
Interest rate assets	$	—	$	106	$	—	$	—
Financial liabilities:
Commodity derivative liabilities	$	—	$	(51,336)	$	—	$	—
Interest rate liabilities	$	—	$	(48)	$	—	$	—
	September 30, 2020
	Level 1		Level 2		Level 3		Total
	(In thousands)
Financial assets:
Commodity derivative assets	$	—	$	24,341	$	—	$	24,341
Financial liabilities:
Commodity derivative liabilities	$	—	$	(1,672)	$	—	$	(1,672)
Interest rate liabilities	$	—	$	(748)	$	—	$	(748)