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Selected Quarterly Financial Data (Unaudited) - Summary of Quarterly Financial Information (Details) - USD ($) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2016 | [1] | Mar. 31, 2016 | Dec. 31, 2015 | Sep. 30, 2015 | Jun. 30, 2015 | Mar. 31, 2015 | Dec. 31, 2014 | Sep. 30, 2014 | Jun. 30, 2016 | Jun. 30, 2015 | Jun. 30, 2014
Revenues | $ 7,240,434 | $ 5,106,735 | $ 6,622,927 | [2] | $ 7,379,406 | $ 9,063,682 | $ 7,064,689 | $ 7,708,067 | [3] | $ 4,004,827 | $ 26,349,502 | $ 27,841,265 | $ 17,673,508
Operating income (loss) | 954,823 | (681,147) | (454,987) | [2] | 1,846,498 | 3,334,547 | 1,245,990 | 2,162,294 | [3] | 1,840,866 | 1,665,187 | 8,583,697 | 5,528,147
Net income (loss) available to common shareholders | $ 20,705,894 | $ (298,183) | $ 654,697 | [2] | $ 2,923,652 | $ 1,719,767 | $ 566,011 | $ 1,071,342 | [3] | $ 960,435 | $ 23,986,060 | $ 4,317,555 | $ 2,923,011
Basic net income (loss) per share (in dollars per share) | $ 0.63 | $ (0.01) | $ 0.02 | [2] | $ 0.09 | $ 0.05 | $ 0.02 | $ 0.03 | [3] | $ 0.03 | $ 0.73 | $ 0.13 | $ 0.09
Diluted net income (loss) per share (in dollars per share) | $ 0.63 | $ (0.01) | $ 0.02 | [2] | $ 0.09 | $ 0.05 | $ 0.02 | $ 0.03 | [3] | $ 0.03 | $ 0.73 | $ 0.13 | $ 0.09
Restructuring charges |  |  | $ 1,300,000 |  |  |  |  |  |  |  | $ 1,257,433 | $ (5,431) | $ 1,293,186
Delhi field litigation settlement gain |  |  |  |  |  |  |  |  |  |  | 28,096,500 | $ 0 | $ 0
Delhi Field |  |  |  |  |  |  |  |  |  |  |  |  |
Working interest |  |  |  |  |  |  |  | 23.90% |  |  |  |  |
Net revenue interest |  |  |  |  |  |  |  | 19.00% |  |  |  |  |
Dehli Field Litigation |  |  |  |  |  |  |  |  |  |  |  |  |
Delhi field litigation settlement gain |  |  |  |  |  |  |  |  |  |  | $ 28,100,000 |  |
[1] | Includes gain on settlement of Delhi field litigation of $28.1 million.
[2] | Includes $1.3 million restructuring charge.
[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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