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Income Taxes - Schedule of Deferred Income Taxes (Details) - USD ($) | Jun. 30, 2015 | Jun. 30, 2014 | Jun. 30, 2013
--- | --- | --- | ---
Deferred tax assets: |  |  |  |
Non-qualified stock-based compensation |  | $ 173,647 | $ 134,469 | $ 774,673
Net operating loss carry-forwards |  | 400,288 | 427,249 | 427,249
AMT credit carry-forward | [1] | 701,254 | 701,254 | 502,466
Other |  | 91,113 | 165,775 | 28,170
Gross deferred tax assets |  | 1,366,302 | 1,428,747 | 1,732,558
Valuation allowance |  | (292,446) | (292,446) | (292,446)
Total deferred tax assets |  | 1,073,856 | 1,136,301 | 1,440,112
Deferred tax liability: |  |  |  |
Oil and natural gas properties |  | (12,233,993) | (10,873,949) | (9,832,948)
Total deferred tax liability |  | (12,233,993) | (10,873,949) | (9,832,948)
Net deferred tax liability |  | (11,160,137) | $ (9,737,648) | $ (8,392,836)
AMT credit carry-forward |  | 901,545 |  |
AMT associated with stock-based compensation |  | $ 200,291 |  |
[1] | Total AMT credit carry-forward is $901,545. Our net deferred tax liability does not include $200,291 of AMT credit carry-forward associated with the tax benefit related to stock-based compensation.

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