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Commitments and Contingencies - Long-Term Take-or-Pay Natural Gas Purchase Contracts (Details) - USD ($) $ in Millions	Jun. 30, 2025	Jan. 08, 2024	Sep. 30, 2023	Nov. 07, 2022
2022 Note Purchase Agreement
Unrecorded Unconditional Purchase Obligation [Line Items]
Amount of funding commitment				$ 5.5
Promissory notes interest rate				7.00%
Amount Funded			$ 5.5
2024 Note Purchase Agreement
Unrecorded Unconditional Purchase Obligation [Line Items]
Amount of funding commitment		$ 10.0
Promissory notes interest rate		8.00%
Amount Funded	$ 8.4

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Amount of contractual obligation, including, but not limited to, long-term debt, lease obligation, purchase obligation, and other commitments.

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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