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v3.21.2

Property, Plant, and Equipment - Narrative (Details) |  | 3 Months Ended | 12 Months Ended
--- | --- | --- | ---
May 07, 2021 USD ($) | Sep. 30, 2021 USD ($) $ / bbl | Jun. 30, 2021 USD ($) | Sep. 30, 2020 USD ($) $ / bbl | Jun. 30, 2021 USD ($)
Property, Plant and Equipment [Line Items] |  |  |  |  |
Capital Expenditures Incurred but Not yet Paid |  | $ 300,000 |  | $ 200,000 |
Asset retirement obligation liabilities incurred |  | 0 |  |  | $ 0
Impairment of proved property |  | $ 0 | $ 0 | $ 9,602,620 |
Natural Gas and Natural Gas Liquids |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |
Net price per barrel (in dollars per barrel) | $ / bbl |  | 23.04 |  | 7.85 |
Barnett Shale |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |
Non-operating working interest, percent | 17.00% |  |  |  |
Revenue interest, percent | 14.00% |  |  |  |
Purchase price of oil and gas assets | $ 18,300,000 |  |  |  |
Asset retirement obligation liabilities incurred | $ 2,800,000 |  |  |  |

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