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Shareholders' Equity and Share-based Compensation - Restricted Stock Activity (Details) - USD ($)
3 Months Ended 9 Months Ended
Mar. 31, 2016
Jun. 30, 2015
Mar. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Roll Forward]      
Weighted Average Remaining Recognition Period (Years) 1 year 8 months 12 days    
Restricted Stock      
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]      
Nonvested at June 30, 2015     873,946
Granted     409,079
Vested     (271,859)
Forfeited     (94,293)
Nonvested at March 31, 2016 916,873 873,946 916,873
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Roll Forward]      
Nonvested at June 30, 2015     $ 8.64
Granted     10.93
Vested     8.83
Forfeited     8.78
Nonvested at March 31, 2016 $ 9.59 $ 8.64 $ 9.59
Weighted Average Remaining Recognition Period (Years) 1 year 10 months 21 days 1 year 9 months 7 days  
RSUs Nonvested Aggregate Intrinsic Value $ 10,864,945 $ 7,638,288 $ 10,864,945
RSUs vested and expected to vest, Outstanding (in shares) 776,954   776,954
RSUs vested and expected to vest, Weighted Average Remaining Recognition Period (in years) 1 year 9 months 15 days    
RSUs vested and expected to vest, Aggregate Intrinsic Value $ 9,206,903   $ 9,206,903