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Acquisitions (Details) - USD ($) $ in Thousands			12 Months Ended
	Apr. 01, 2022	Jan. 14, 2022	Jun. 30, 2023	Jun. 30, 2022
Acquisitions
Liabilities acquired				$ 5,400
Asset retirement obligation liabilities incurred			$ 57	219
Borrowings under senior secured credit facility				$ 34,000
Goodwill acquired			0
Bargain purchase gain			0
Barnett Shale
Acquisitions
Downward purchase adjustment			$ 900
Jonah Field In Wyoming From Exaro Energy III, LLC
Acquisitions
Asset acquisition of transaction cost	$ 200
Asset acquisition, consideration transferred related to deposits transferred	1,600
Liabilities acquired	3,000
Purchase price of oil and gas assets	26,400
Jonah Field In Wyoming From Exaro Energy III, LLC | Other assets, net
Acquisitions
Asset acquisition for deposits	1,200
Williston Basin Acquisition
Acquisitions
Asset acquisition of transaction cost		$ 300
Liabilities acquired		2,400
Purchase price of oil and gas assets		25,200
Senior Secured Reserve-Based Credit Facility | Jonah Field In Wyoming From Exaro Energy III, LLC
Acquisitions
Borrowings under senior secured credit facility	$ 17,000
Senior Secured Reserve-Based Credit Facility | Williston Basin Acquisition
Acquisitions
Borrowings under senior secured credit facility		$ 16,000

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