Commitments and Contingencies (Details)		9 Months Ended
	Feb. 08, 2021 USD ($)	Jun. 30, 2022 USD ($) $ / Mcf Bcf	Jun. 28, 2021 civilAction
Long-term Purchase Commitment [Line Items]
Self-insured retention | $		$ 1,000,000
Damages sought, value | $	$ 1,600,000
Number of civil actions | civilAction			3
Lessee, finance lease, not yet commenced, future payments | $		$ 19,300,000
Supply Commitment
Long-term Purchase Commitment [Line Items]
Contract term		1 year
Long-term purchase commitment, minimum volume required | Bcf		3.4
Supply Commitment | Short-term Contract with Customer
Long-term Purchase Commitment [Line Items]
Contract term		1 year
Long-term purchase commitment, minimum volume required | Bcf		68.3
Supply Commitment | Long-term Contract with Customer Within Two To Three Years
Long-term Purchase Commitment [Line Items]
Long-term purchase commitment, minimum volume required | Bcf		97.2
Supply Commitment | Minimum | Long-term Contract with Customer Within Two To Three Years
Long-term Purchase Commitment [Line Items]
Contract term		2 years
Supply Commitment | Maximum | Long-term Contract with Customer Within Two To Three Years
Long-term Purchase Commitment [Line Items]
Contract term		3 years
Supply Commitment | Weighted Average
Long-term Purchase Commitment [Line Items]
Long-term purchase commitment, amount (USD per MCF) | $ / Mcf		5.41