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Supplemental Disclosure of Cash Flow Information (Tables) | 12 Months Ended
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Jun. 30, 2016
Supplemental Cash Flow Elements [Abstract] |
Schedule of supplemental disclosures of cash flow information | Our supplemental disclosures of cash flow information for the years ended June 30, 2016, 2015, and 2014 are as follows:
| June 30,
| 2016 |  | 2015 |  | 2014
Income taxes paid | $ | 540,000 |  |  | $ | 220,000 |  |  | $ | 755,941 |
Income tax refunds | 1,556,999 |  |  | 331,733 |  |  | — |
Non-cash transactions: |  |  |  |  |
Increase (decrease) in accrued purchases of property and equipment | (2,250,048 | ) |  | 5,422,566 |  |  | (183,766 | )
Deferred loan costs charged to oil and gas property costs | 107,196 |  |  | — |  |  | — |
Oil and natural gas property costs attributable to the recognition of asset retirement obligations | 140,151 |  |  | 576,039 |  |  | 66,976 |
Mengel working interest acquired in Delhi Field litigation settlement | 596,500 |  |  | — |  |  | — |
Royalty rights acquired through non-monetary exchange of patent and trademark assets | 108,512 |  |  | — |  |  | — |
Previously acquired Company shares swapped by holders to pay stock option exercise price | $ | 76,500 |  |  | $ | — |  |  | $ | 618,606 |
Accrued purchases of treasury stock | (170,283 | ) |  | 170,283 |  |  | — |

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