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Selected Quarterly Financial Data (Unaudited) | 12 Months Ended
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Jun. 30, 2017
Quarterly Financial Information Disclosure [Abstract] |
Selected Quarterly Financial Data (Unaudited) | Selected Quarterly Financial Data (Unaudited) The following table presents summarized quarterly financial information for the years ended June 30, 2017 and 2016:
2017 | First |  | Second |  | Third |  | Fourth
Revenues | $ | 7,593,940 |  |  | $ | 8,529,817 |  |  | $ | 9,525,437 |  |  | $ | 8,835,702 |
Operating income | 2,727,593 |  |  | 3,675,381 |  |  | 3,893,236 |  |  | 2,583,912 |
Net income available to common shareholders | $ | 563,345 |  |  | $ | 2,307,634 |  |  | $ | 2,419,143 |  |  | $ | 1,500,761 |
Basic and diluted net income per share | $ | 0.02 |  |  | $ | 0.07 |  |  | $ | 0.07 |  |  | $ | 0.05 |
Dividends per share declared and paid in the quarter | $ | 0.05 |  |  | $ | 0.065 |  |  | $ | 0.070 |  |  | $ | 0.070 |
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 and diluted net income (loss) per share | $ | 0.09 |  |  | $ | 0.02 |  |  | $ | (0.01 | ) |  | $ | 0.63 |
Dividends per share declared and paid in the quarter | $ | 0.05 |  |  | $ | 0.05 |  |  | $ | 0.05 |  |  | $ | 0.05 |
(1) Includes $1.3 million restructuring charge. (2) Includes gain on settlement of Delhi field litigation of $28.1 million.

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- Definition The entire disclosure for quarterly financial data. Includes, but is not limited to, tabular presentation of financial information for fiscal quarters, effect of year-end adjustments, and an explanation of matters or transactions that affect comparability of the information. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -URI http://asc.fasb.org/topic&trid=2126967 + Details
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