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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.