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Supplemental Disclosures about Oil and Natural Gas Producing Properties (unaudited) (Tables) | 12 Months Ended
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Jun. 30, 2016
Oil and Gas Exploration and Production Industries Disclosures [Abstract] |
Schedule of costs incurred and capitalized in oil and natural gas property acquisition, exploration and development activities | The following table summarizes costs incurred and capitalized in oil and natural gas property acquisition, exploration and development activities. Property acquisition costs are those costs incurred to lease property, including both undeveloped leasehold and the purchase of reserves in place. Exploration costs include costs of identifying areas that may warrant examination and examining specific areas that are considered to have prospects containing oil and natural gas reserves, including costs of drilling exploratory wells, geological and geophysical costs and carrying costs on undeveloped properties. Development costs are incurred to obtain access to proved reserves, including the cost of drilling. Exploration and development costs also include amounts incurred due to the recognition of asset retirement obligations of $140,151, $576,039 and $66,976 during the years ended June 30, 2016, 2015, and 2014, respectively.
| For the Years Ended June 30,
| 2016 |  | 2015 |  | 2014
Oil and Natural Gas Activities |  |  |  |  |
Property acquisition costs: |  |  |  |  |
Proved property | $ | — |  |  | $ | — |  |  | $ | — |
Unproved property (a) | 596,500 |  |  | — |  |  | 47,344 |
Exploration costs | — |  |  | — |  |  | 757,423 |
Development costs | 19,093,200 |  |  | 10,975,637 |  |  | 18,566 |
Total costs incurred for oil and natural gas activities | $ | 19,689,700 |  |  | $ | 10,975,637 |  |  | $ | 823,333 |
Schedule of estimated quantities of proved oil and natural gas reserves and changes in quantities of proved developed and undeveloped reserves | Estimated quantities of proved oil and natural gas reserves and changes in quantities of proved developed and undeveloped reserves for each of the periods indicated were as follows:
| Crude Oil (Bbls) |  | Natural Gas Liquids (Bbls) |  | Natural Gas (Mcf) |  | BOE
Proved developed and undeveloped reserves: |  |  |  |  |  |  |
June 30, 2013 | 12,782,755 |  |  | 979,885 |  |  | 22,797 |  |  | 13,766,440 |
Revisions of previous estimates (a) | (1,919,052 | ) |  | 1,269,588 |  |  | 2,412,677 |  |  | (247,350 | )
Improved recovery, extensions and discoveries | 17,146 |  |  | 32,731 |  |  | 498,044 |  |  | 132,884 |
Sales of minerals in place | (184,722 | ) |  | — |  |  | — |  |  | (184,722 | )
Production (sales volumes) | (169,783 | ) |  | (3,516 | ) |  | (26,655 | ) |  | (177,742 | )
June 30, 2014 | 10,526,344 |  |  | 2,278,688 |  |  | 2,906,863 |  |  | 13,289,510 |
Revisions of previous estimates (b) | (64,074 | ) |  | 156,195 |  |  | (2,894,703 | ) |  | (390,330 | )
Improved recovery, extensions and discoveries | — |  |  | — |  |  | — |  |  | — |
Sales of minerals in place | — |  |  | — |  |  | — |  |  | — |
Production (sales volumes) | (450,294 | ) |  | (1,288 | ) |  | (7,221 | ) |  | (452,786 | )
June 30, 2015 | 10,011,976 |  |  | 2,433,595 |  |  | 4,939 |  |  | 12,446,394 |
Revisions of previous estimates (c) | (765,385 | ) |  | (198,233 | ) |  | (3,319 | ) |  | (964,171 | )
Improved recovery, extensions and discoveries | — |  |  | — |  |  | — |  |  | — |
Sales of minerals in place | — |  |  | — |  |  | — |  |  | — |
Production (sales volumes) | (658,041 | ) |  | (491 | ) |  | (1,620 | ) |  | (658,802 | )
June 30, 2016 | 8,588,550 |  |  | 2,234,871 |  |  | — |  |  | 10,823,421 |
Proved developed reserves: |  |  |  |  |  |  |
June 30, 2013 | 10,077,522 |  |  | 8,539 |  |  | 22,797 |  |  | 10,089,861 |
June 30, 2014 | 7,858,224 |  |  | 32,164 |  |  | 481,042 |  |  | 7,970,562 |
June 30, 2015 | 7,347,231 |  |  | 1,572 |  |  | 4,939 |  |  | 7,349,626 |
June 30, 2016 | 7,168,249 |  |  | — |  |  | — |  |  | 7,168,249 |
Proved undeveloped reserves: |  |  |  |  |  |  |
June 30, 2013 | 2,705,233 |  |  | 971,346 |  |  | — |  |  | 3,676,579 |
June 30, 2014 | 2,668,120 |  |  | 2,246,524 |  |  | 2,425,821 |  |  | 5,318,948 |
June 30, 2015 | 2,664,745 |  |  | 2,432,023 |  |  | — |  |  | 5,096,768 |
June 30, 2016 | 1,420,301 |  |  | 2,234,871 |  |  | — |  |  | 3,655,172 |
(a) Significant reserve revisions occurred in the Delhi field during fiscal 2014. As a result of a fluid release event in the field, 1,817,224 BBLs of oil reserves were reclassified from proved to probable category based on the operator's decision to defer CO 2 injections in certain parts of the field. There was a positive revision of 1,679,481 BOE, which was comprised of 1,275,178 BBLs of natural gas liquids and 2,425,821 MCF of natural gas as a result of an improved design for the NGL plant in the Delhi field. The plant was expected to significantly increase recoveries of these products, particularly natural gas, which were not previously planned to be extracted from the injection volumes. (b) The 2,894,703 negative fiscal 2015 revision for natural gas primarily reflects a 2,246,524 MCF negative revision for the Delhi field NGL plant together with a 452,786 MCF negative revision at the Giddings Field for a well that was lost due to mechanical issues. The NGL plant revision resulted from a decision during the current fiscal year to use the methane production internally to reduce field operating costs rather than selling it into the market. The 156,195 BBL positive natural gas liquids revision primarily reflects 185,499 BBL positive revision for better recovery from the redesigned NGL plant, partly offset by a 29,304 BBL negative revision due to the lost Giddings well. (c) The negative revision results primarily from the removal of proved undeveloped reserves in the far eastern part of the Delhi field, referred to as Test Site 6, which were deemed uneconomic under the lower SEC price case utilized at the end of the period.
Schedule of standardized measure of discounted future net cash flows related to proved oil and natural gas reserves | The standardized measure of discounted future net cash flows related to proved oil and natural gas reserves as of June 30, 2016, 2015, and 2014 are as follows:
| For the Years Ended June 30,
| 2016 |  | 2015 |  | 2014
Future cash inflows | $ | 383,491,193 |  |  | $ | 807,030,282 |  |  | $ | 1,193,515,075 |
Future production costs and severance taxes | (179,182,565 | ) |  | (309,225,333 | ) |  | (475,387,931 | )
Future development costs | (16,595,047 | ) |  | (49,691,006 | ) |  | (46,154,178 | )
Future income tax expenses | (45,713,438 | ) |  | (123,888,665 | ) |  | (195,581,510 | )
Future net cash flows | 142,000,143 |  |  | 324,225,278 |  |  | 476,391,456 |
10% annual discount for estimated timing of cash flows | (64,042,824 | ) |  | (165,028,739 | ) |  | (250,313,784 | )
Standardized measure of discounted future net cash flows | $ | 77,957,319 |  |  | $ | 159,196,539 |  |  | $ | 226,077,672 |
Schedule of NYMEX prices used in determining future cash flows | Future cash inflows represent expected revenues from production of period-end quantities of proved reserves based on the previous 12 months unweighted arithmetic average first-day-of-the-month commodity prices for each year and reflect adjustments for lease quality, transportation fees, energy content and regional price differentials.
| Year Ended June 30,
| 2016 |  | 2015 |  | 2014
| Oil (Bbl) |  | Gas (MMBtu) |  | Oil (Bbl) |  | Gas (MMBtu) |  | Oil (Bbl) |  | Gas (MMBtu)
NYMEX prices used in determining future cash flows | $ | 42.91 |  |  | n/a |  | $ | 71.88 |  |  | $ | 3.44 |  |  | $ | 100.37 |  |  | $ | 4.10 |
Schedule of changes in the standardized measure of discounted future net cash flows applicable to proved crude oil, natural gas liquids, and natural gas reserves | A summary of the changes in the standardized measure of discounted future net cash flows applicable to proved crude oil, natural gas liquids, and natural gas reserves is as follows:
| For the Years Ended June 30,
| 2016 |  | 2015 |  | 2014
Balance, beginning of year | $ | 159,196,539 |  |  | $ | 226,077,672 |  |  | $ | 307,220,699 |
Net changes in sales prices and production costs related to future production | (120,832,747 | ) |  | (88,043,095 | ) |  | (73,439,526 | )
Changes in estimated future development costs | 74,991 |  |  | (9,585,405 | ) |  | 9,848,614 |
Sales of oil and gas produced during the period, net of production costs | (17,079,363 | ) |  | (18,538,016 | ) |  | (16,479,934 | )
Net change due to extensions, discoveries, and improved recovery | — |  |  | — |  |  | 775,574 |
Net change due to revisions in quantity estimates | (18,821,014 | ) |  | (9,391,321 | ) |  | (23,757,788 | )
Net change due to sales of minerals in place | — |  |  | — |  |  | (3,150,277 | )
Development costs incurred during the period | 16,327,883 |  |  | 7,785,095 |  |  | — |
Accretion of discount | 21,870,650 |  |  | 31,974,540 |  |  | 45,896,187 |
Net change in discounted income taxes | 36,598,239 |  |  | 34,157,767 |  |  | 58,073,450 |
Net changes in timing of production and other (a) | 622,141 |  |  | (15,240,698 | ) |  | (78,909,327 | )
Balance, end of year | $ | 77,957,319 |  |  | $ | 159,196,539 |  |  | $ | 226,077,672 |
(a) Due to the June 2013 fluid release event in the Delhi field, the operator expressed plans to produce the Delhi field at lower production rates. The decision to produce these reserves at lower rates over a longer period of time did not materially change the total quantities expected to be recovered, but resulted in a significant reduction in the discounted value of these reserves as of June 30, 2014.

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- Definition Tabular disclosure of the aggregate of costs (whether the costs are capitalized or charged to expense at the time they are incurred ) incurred for the year in oil and gas property acquisition, exploration and development activities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 55 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=34713648&loc=d3e63042-109448 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=68064819&loc=d3e62059-109447 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 19 -URI http://asc.fasb.org/extlink&oid=68064819&loc=d3e62038-109447 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 18 -URI http://asc.fasb.org/extlink&oid=68064819&loc=d3e62014-109447 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 410 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=6392692&loc=d3e7535-110849 + Details
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- Definition Tabular disclosure of oil and gas production including quantitative production data, average price, and per unit cost data. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-K (SK) -Number 229 -Section 1204 + Details
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- Definition Tabular disclosure of the aggregate change in the standardized measure of discounted future net cash flows relating to proved oil and gas reserves and oil and gas subject to purchases under long-term agreements in which the enterprise participates in the operation of the properties on which oil and gas is located or otherwise serves as the producer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 35 -URI http://asc.fasb.org/extlink&oid=68064819&loc=d3e62500-109447 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 36 -URI http://asc.fasb.org/extlink&oid=68064819&loc=d3e62536-109447 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 34 -URI http://asc.fasb.org/extlink&oid=68064819&loc=d3e62496-109447 + Details
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- Definition Tabular disclosure of the net quantities of an enterprise's interests in proved developed and undeveloped reserves of (a) crude oil (including condensate and natural gas liquids), (b) natural gas (including coal bed methane), (c) synthetic oil, (d) synthetic gas, and (e) other nonrenewable natural resources that are intended to be upgraded during the period as of the beginning of the period, changes in quantities during the period, and as of the end of the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=68064819&loc=d3e61858-109447 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=68064819&loc=d3e61884-109447 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=68064819&loc=d3e61831-109447 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=68064819&loc=d3e61797-109447 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=68064819&loc=d3e61869-109447 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=68064819&loc=d3e61872-109447 + Details
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- Definition Tabular disclosure of the future net cash flows relating to proved oil and gas reserves and oil and gas subject to purchase under long-term agreements in which the enterprise participates in the operation of the properties on which the oil and gas is located or otherwise serves as the producer. This information is presented in aggregate and for each geographic area for which reserve quantities are disclosed. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 30 -URI http://asc.fasb.org/extlink&oid=68064819&loc=d3e62424-109447 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 32 -URI http://asc.fasb.org/extlink&oid=68064819&loc=d3e62476-109447 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 36 -URI http://asc.fasb.org/extlink&oid=68064819&loc=d3e62536-109447 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 35 -URI http://asc.fasb.org/extlink&oid=68064819&loc=d3e62500-109447 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 31 -URI http://asc.fasb.org/extlink&oid=68064819&loc=d3e62455-109447 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 33 -URI http://asc.fasb.org/extlink&oid=68064819&loc=d3e62479-109447 + Details
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