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Supplemental Disclosures about Oil and Natural Gas Producing Properties (unaudited) (Details) (USD $) | 12 Months Ended |  |  |  |  |
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Jun. 30, 2013 | Jun. 30, 2012 | Jun. 30, 2011 | Jun. 30, 2013 Joint interest arrangement Orion Exploration Partners, LLC Kay County in North Central Oklahoma | May 01, 2013 Joint interest arrangement Orion Exploration Partners, LLC Kay County in North Central Oklahoma | Jun. 30, 2012 Joint interest arrangement Orion Exploration Partners, LLC Kay County in North Central Oklahoma | Jun. 30, 2013 Joint interest arrangement Leasehold purchase cost Orion Exploration Partners, LLC Kay County in North Central Oklahoma | May 01, 2013 Joint interest arrangement Leasehold purchase cost Orion Exploration Partners, LLC Kay County in North Central Oklahoma
Supplemental Disclosures about Oil and Natural Gas Producing Properties (unaudited) |  |  |  |  |  |  |  |
Oil and natural gas property costs attributable to the recognition of asset retirement obligations | $ 65,575 | $ 93,522 | $ 15,000 |  |  |  |  |
Property acquisition costs: |  |  |  |  |  |  |  |
Proved property | 26,449 | 115,637 | 465,176 |  |  |  |  |
Unproved property | 195,599 | 5,544,217 | 523,591 |  |  |  |  |
Exploration costs | 4,356,640 | 3,016,924 | 215,660 |  |  |  |  |
Development costs | 79,035 | 238,463 | 2,200,905 |  |  |  |  |
Total costs incurred for oil and natural gas activities | 4,657,723 | 8,915,241 | 3,405,332 |  |  |  |  |
Costs incurred for oil and natural gas property acquisition, exploration and development activities |  |  |  |  |  |  |  |
Due to joint interest partner | $ 127,081 | $ 3,217,975 |  | $ 127,081 |  | $ 3,217,975 | $ 1,209,197 | $ 1,200,000
Joint venture interest in initial undrilled leasehold (as a percent) |  |  |  | 45.00% | 33.90% |  |  |

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