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Net Income Per Share - Schedule of Basic and Diluted Earnings (Loss) Per Share (Details) - USD ($)
 3 Months Ended 12 Months Ended
Jun. 30, 2017
Mar. 31, 2017
Dec. 31, 2016
Sep. 30, 2016
Jun. 30, 2016
 [1]
Mar. 31, 2016
Dec. 31, 2015
 [2]
Sep. 30, 2015
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2015
Numerator                      
Net income attributable to common shareholders $ 1,500,761 $ 2,419,143 $ 2,307,634 $ 563,345 $ 20,705,894 $ (298,183) $ 654,697 $ 2,923,652 $ 6,790,883 $ 23,986,060 $ 4,317,555
Denominator                      
Weighted average number of common shares—Basic (in shares)                 33,034,480 32,810,375 32,817,456
Effect of dilutive securities:                      
Total weighted average dilutive securities (in shares)                 76,080 50,856 106,562
Weighted average number of common shares and dilutive potential common shares used in diluted EPS (in shares)                 33,110,560 32,861,231 32,924,018
Net income per common share - Basic (in dollars per share)                 $ 0.21 $ 0.73 $ 0.13
Net income per common share - Diluted (in dollars per share)                 $ 0.21 $ 0.73 $ 0.13
Contingent restricted stock grants                      
Effect of dilutive securities:                      
Weighted average dilutive securities (in shares)                 53,546 9,378 4,422
Stock Options                      
Effect of dilutive securities:                      
Weighted average dilutive securities (in shares)                 22,534 41,478 102,140
[1] Includes gain on settlement of Delhi field litigation of $28.1 million.
[2] Includes $1.3 million restructuring charge.