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v3.21.2

Summary of Significant Accounting Policies - Narrative (Details) | 12 Months Ended |
--- | --- | ---
Jun. 30, 2021 USD ($) type | Jun. 30, 2020 USD ($)
Limitation on Capitalized Costs |  |
Allowance for doubtful accounts | $ 0 | $ 0
Revenue Recognition - Oil and Gas |  |
Receivables from oil and gas sales | $ 8,686,967 | $ 1,919,213
Number of product types | type | 3 |
Oil and natural gas properties |  |
Limitation on Capitalized Costs |  |
Period considered for computing unweighted arithmetic average of oil and natural gas prices (in months) | 12 months |
Other Property and Equipment | Minimum |  |
Other Property and Equipment |  |
Expected lives of the individual assets or group of assets | 3 years |
Other Property and Equipment | Maximum |  |
Other Property and Equipment |  |
Expected lives of the individual assets or group of assets | 7 years |
Discount rate | Oil and natural gas properties |  |
Limitation on Capitalized Costs |  |
Discount rate for present value (as a percent) | 0.10 |

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