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Income Taxes - Schedule of Deferred Income Taxes (Details) - USD ($)	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2016
Deferred tax assets:
Non-qualified stock-based compensation	$ 144,956	$ 367,159	$ 553,182
Net operating loss carry-forwards	680,186	852,477	386,808
AMT credit carry-forward	0	110,564	0
Other	24,207	18,581	130,947
Gross deferred tax assets	849,349	1,348,781	1,070,937
Valuation allowance	(180,628)	(292,446)	(292,446)
Total deferred tax assets	668,721	1,056,335	778,491
Deferred tax liability:
Oil and natural gas properties	(11,224,156)	(16,882,626)	(12,513,863)
Total deferred tax liability	(11,224,156)	(16,882,626)	(12,513,863)
Net deferred tax liability	$ (10,555,435)	$ (15,826,291)	$ (11,735,372)

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