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Selected Quarterly Financial Data (Unaudited) (Tables) | 12 Months Ended
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Jun. 30, 2016
Quarterly Financial Information Disclosure [Abstract] |
Summary of quarterly financial information | The following table presents summarized quarterly financial information for the years ended June 30, 2016 and 2015:
2016 | First |  | Second (1) |  | Third |  | Fourth (2)
Revenues | $ | 7,379,406 |  |  | $ | 6,622,927 |  |  | $ | 5,106,735 |  |  | $ | 7,240,434 |
Operating income (loss) | 1,846,498 |  |  | (454,987 | ) |  | (681,147 | ) |  | 954,823 |
Net income (loss) available to common shareholders | $ | 2,923,652 |  |  | $ | 654,697 |  |  | $ | (298,183 | ) |  | $ | 20,705,894 |
Basic net income (loss) per share | $ | 0.09 |  |  | $ | 0.02 |  |  | $ | (0.01 | ) |  | $ | 0.63 |
Diluted net income (loss) per share | $ | 0.09 |  |  | $ | 0.02 |  |  | $ | (0.01 | ) |  | $ | 0.63 |
2015 | First |  | Second (3) |  | Third |  | Fourth
Revenues | $ | 4,004,827 |  |  | $ | 7,708,067 |  |  | $ | 7,064,689 |  |  | $ | 9,063,682 |
Operating income | 1,840,866 |  |  | 2,162,294 |  |  | 1,245,990 |  |  | 3,334,547 |
Net income available to common shareholders | $ | 960,435 |  |  | $ | 1,071,342 |  |  | $ | 566,011 |  |  | $ | 1,719,767 |
Basic net income per share | $ | 0.03 |  |  | $ | 0.03 |  |  | $ | 0.02 |  |  | $ | 0.05 |
Diluted net income per share | $ | 0.03 |  |  | $ | 0.03 |  |  | $ | 0.02 |  |  | $ | 0.05 |
(1) Includes $1.3 million restructuring charge. (2) Includes gain on settlement of Delhi field litigation of $28.1 million. (3) Impacted by the November 1, 2014 reversion of the Company's 23.9% working interest and 19.0% net revenue interest in the Delhi field.

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- Definition Tabular disclosure of quarterly financial data. Includes, but is not limited to, financial information for fiscal quarters, cumulative effect of a change in accounting principle and earnings per share data. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a)-(j) -URI http://asc.fasb.org/extlink&oid=68076893&loc=d3e1280-108306 + Details
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