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Consolidated Statements of Operations (USD $) | 12 Months Ended
--- | ---
Jun. 30, 2014 | Jun. 30, 2013 | Jun. 30, 2012
Revenues |  |  |  |  |  |
Delhi field | $ 16,908,666 |  | $ 19,219,036 |  | $ 15,143,770 |
Artificial lift technology | 623,332 |  | 375,063 |  | 132,344 |
Other properties | 141,510 |  | 1,755,821 |  | 2,685,924 |
Total revenues | 17,673,508 |  | 21,349,920 |  | 17,962,038 |
Operating Costs |  |  |  |  |  |
Artificial lift technology | 609,221 |  | 390,238 |  | 124,703 |
Production costs - other properties | 584,352 |  | 1,390,500 |  | 1,650,296 |
Depreciation, depletion and amortization | 1,228,685 |  | 1,300,207 |  | 1,136,974 |
Accretion of asset retirement obligations | 41,626 |  | 72,312 |  | 77,505 |
General and administrative expenses | 8,388,291 | [1] | 7,495,309 | [1] | 6,143,286 | [1]
Restructuring charges | 1,293,186 | [2] | 0 | [2] | 0 | [2]
Total operating costs | 12,145,361 |  | 10,648,566 |  | 9,132,764 |
Income from operations | 5,528,147 |  | 10,701,354 |  | 8,829,274 |
Other |  |  |  |  |  |
Interest income | 30,256 |  | 22,580 |  | 25,728 |
Interest (expense) | (69,092) |  | (65,745) |  | (21,950) |
Income before income tax provision | 5,489,311 |  | 10,658,189 |  | 8,833,052 |
Income tax provision | 1,891,998 |  | 4,029,761 |  | 3,700,922 |
Net income attributable to the Company | 3,597,313 |  | 6,628,428 |  | 5,132,130 |
Dividends on preferred stock | 674,302 |  | 674,302 |  | 630,391 |
Net income attributable to common shareholders | $ 2,923,011 |  | $ 5,954,126 |  | $ 4,501,739 |
Earnings (loss) per common share |  |  |  |  |  |
Basic (in dollars per share) | $ 0.09 |  | $ 0.21 |  | $ 0.16 |
Diluted (in dollars per share) | $ 0.09 |  | $ 0.19 |  | $ 0.14 |
Weighted average number of common shares outstanding |  |  |  |  |  |
Basic (in shares) | 30,895,832 |  | 28,205,467 |  | 27,784,298 |
Diluted (in shares) | 32,564,067 |  | 31,975,131 |  | 31,609,929 |
[1] | *General and administrative expenses for the years ended June 30, 2014, 2013 and 2012 included non-cash stock-based compensation expense of $1,352,322, $1,531,745 and $1,475,995, respectively.
[2] | Restructuring charges for the year ended June 30, 2014 included non-cash stock-based compensation expense of $376,365.

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