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Income Taxes - Reconciliation of Statutory and Income Tax Expense (Details) - USD ($) | 12 Months Ended
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Jun. 30, 2020 | Jun. 30, 2019
Effective Income Tax Rate Reconciliation, Amount [Abstract] |  |
Income tax provision (benefit) computed at the statutory federal rate | $ 788,776 | $ 3,960,480
Return to provision adjustments including returns amended for EOR credits | (2,823,527) | 0
Depletion in excess of tax basis | (412,215) | (982,302)
State income taxes, net of federal tax benefit | 272,962 | 593,533
Permanent differences related to stock-based compensation and other | 22,408 | (73,671)
Expiration of Section 382 tax loss carryforwards | 0 | 127,410
Change in valuation allowance for Section 382 tax loss carryforwards | 0 | (127,410)
Other | (29,400) | (15,679)
Total income tax provision | $ (2,180,996) | $ 3,482,361
Effective Income Tax Rate Reconciliation, Percent [Abstract] |  |
Income tax (benefit) provision computed at the statutory federal rate | 21.00% | 21.00%
Return to provision adjustments including returns amended for EOR credits | (75.20%) | 0.00%
Depletion in excess of tax basis | (11.00%) | (5.10%)
State income taxes, net of federal tax benefit | 7.30% | 3.10%
Permanent differences related to stock-based compensation and other | 0.60% | (0.40%)
Expiration of Section 382 tax loss carryforwards | 0.00% | 0.70%
Change in valuation allowance for Section 382 tax loss carryforwards | 0.00% | (0.70%)
Other | (0.80%) | (0.10%)
Income tax provision (benefit) | (58.10%) | 18.50%

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- Definition The amount of income tax expense or benefit for the period computed by applying the domestic federal statutory tax rates to pretax income from continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32687-109319 + Details
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- Definition Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to nondeductible depletion. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32687-109319 + Details
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