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Property and Equipment (Details) $ in Millions	9 Months Ended
	Mar. 31, 2025 USD ($) $ / bbl $ / MMBTU	Mar. 31, 2024 USD ($) $ / bbl $ / MMBTU
Property and Equipment
Depletion	$ 15.0	$ 13.7
Capital expenditures	8.8	9.4
Impairment of proved property	$ 0.0	$ 0.0
Natural Gas and Natural Gas Liquids
Property and Equipment
Oil and gas prices first day average of twelve months of Henry Hub price for ceiling test | $ / MMBTU	2.45	2.44
Net price per barrel (in dollars per barrel) | $ / bbl	22.38	29.88
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	75.33	77.64

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Cost per unit of oil and gas production.

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Future cash outflow to pay for purchases of fixed assets that have occurred.

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