Property and Equipment (Details) $ in Millions	12 Months Ended
Jun. 30, 2025 USD ($) $ / bbl $ / MMBTU	Jun. 30, 2024 USD ($) $ / bbl $ / MMBTU
Property and Equipment
Depletion	$ 20.4	$ 18.6
Capital expenditures	13.2	12.3
Impairment of proved property	$ 0.0	$ 0.0
Natural Gas
Property and Equipment
Oil and gas prices first day average of twelve months of Henry Hub price for ceiling test \| $ / MMBTU	2.87	2.32
Net price per barrel (in dollars per barrel) \| $ / bbl	25.24	23.86
Crude oil
Property and Equipment
Oil and gas prices first day average of twelve months of West Texas Intermediate spot market price for ceiling test \| $ / bbl	71.2	79.45

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Cost per unit of oil and gas production.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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Future cash outflow to pay for purchases of fixed assets that have occurred.

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The noncash expense charged against earnings to recognize the consumption of natural resources.

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Amount of impairment loss for oil and gas properties with proved and unproved reserves in oil- and gas-producing activities.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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