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Stock-Based Compensation (Summarized Stock Option Activity) (Details) - USD ($)
$ / shares in Units, $ in Thousands
 1 Months Ended 12 Months Ended
Aug. 31, 2014
Aug. 31, 2013
Aug. 31, 2012
Jun. 30, 2015
Jun. 30, 2014
Jun. 30, 2013
Jun. 30, 2012
Stock-Based Compensation [Abstract]              
Outstanding, Number of shares, Beginning Balance       2,710,392 2,648,583 2,247,583  
Exercised, Number of shares       (773,633) (26,667) (30,000)  
Granted under Plan, Number of shares 464,410 224,896 431,000        
Forfeitures, Number of shares         (136,420) (55,333)  
Outstanding, Number of shares, Ending Balance       2,401,169 2,710,392 2,648,583 2,247,583
Exercisable, Number of Shares       1,643,163      
Vested and expecting to vest, Number of shares       2,401,169      
Outstanding, Weighted average exercise price, Beginning Balance       $ 14.16 $ 15.15 $ 16.28  
Exercised, Weighted average exercise price       8.35 7.00 7.98  
Forfeitures, Weighted average exercise price         23.51    
Granted under Plan, Weighted average exercise price $ 11.23 $ 7.35 $ 8.75        
Outstanding, Weighted average exercise price, Ending Balance       15.34 $ 14.16 $ 15.15 $ 16.28
Exercisable, Weighted average exercise price       17.82      
Vested and expecting to vest, Weighted average exercise price       $ 15.34      
SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2       4 years 8 months 27 days 5 years 4 months 17 days 5 years 11 months 23 days 6 years 5 months 5 days
Granted under Plan, Weighted Average Remaining Contractual Term (in years) 10 years 10 years 10 years        
SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2       4 years 8 months 27 days 5 years 4 months 17 days 5 years 11 months 23 days 6 years 5 months 5 days
Exercisable, Weighted Average Remaining Contractual Term (in years)       2 years 11 months 16 days      
Vested and expecting to vest, Weighted Average Remaining Contractual Term (in years)       4 years 8 months 27 days      
Outstanding, Aggregate Intrinsic Value, Beginning Balance       $ 3,909 $ 313 $ 602  
Exercised, Aggregate Intrinsic Value       3,845 91 24  
Granted under Plan, Aggregate Intrinsic Value $ 2,113 $ 568 $ 1,249        
Outstanding, Aggregate Intrinsic Value, Ending Balance       11,516 $ 3,909 $ 313 $ 602
Exercisable, Aggregate Intrinsic Value       5,234      
Forfeited, Aggregate Intrinsic Value              
Vested and expecting to vest, Aggregate Intrinsic Value       $ 11,516      
Granted under Plan, Weighted Average Grant Date Fair Value $ 4.55 $ 2.53 $ 2.90        
Options exercise price range, lower limit       $ 7.35      
Options exercise price range, upper limit       $ 24.46