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Asset Retirement Obligations (Tables) | 12 Months Ended
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Jun. 30, 2017
Asset Retirement Obligation Disclosure [Abstract] |
Schedule of reconciliation of the beginning and ending asset retirement obligation | The following is a reconciliation of the beginning and ending asset retirement obligations for the years ended June 30, 2017 and 2016:
| Years Ended June 30,
| 2017 |  | 2016
Asset retirement obligations—beginning of period | $ | 962,196 |  |  | $ | 772,990 |
Liabilities incurred | 52,792 |  |  | 28,505 |
Liabilities settled | (157,164 | ) |  | — |
Liabilities sold (b) | (47,817 | ) |  | — |
Accretion of discount | 59,664 |  |  | 49,054 |
Revisions to previous estimates | 419,072 |  |  | 111,647 |
Asset retirement obligations — end of period (b) | 1,288,743 |  |  | 962,196 |
Less current asset retirement obligations | (35,115 | ) |  | (201,896 | )
Long-term portion of asset retirement obligations | $ | 1,253,628 |  |  | $ | 760,300 |
(a) We conveyed our interest in a well to the previous operator in exchange for the assumption of our asset retirement obligations. (b) As we have now retired all of our remaining operated wells, our asset retirement obligations as of June 30, 2017 consist entirely of our working interest obligations in the Delhi field.

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- Definition Tabular disclosure of the changes in carrying amount of a liability for asset retirement obligations, for changes such as new obligations, changes in estimates of existing obligations, spending on existing obligations, property dispositions, and foreign currency translation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 410 -SubTopic 30 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6393242&loc=d3e13201-110859 + Details
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