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Share-Based Compensation (Stock Option Plans) (Details) - USD ($)
 12 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2015
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]      
Outstanding, beginning of year (in shares) 1,098,165    
Granted during the period (in shares) 77,339    
Exercised during the period (in shares) (300,590)    
Canceled, forfeited or expired during the period (in shares) (1,925)    
Outstanding, end of year (in shares) 872,989 1,098,165  
Vested and expected to vest at June 30, 2017 (in shares) 872,187    
Exercisable, end of year (in shares) 657,019    
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract]      
Outstanding, beginning of year, Weighted-Average Exercise Price (in dollars per share) $ 36.52    
Granted during the period, Weighted-Average Exercise Price (in dollars per share) 37.00    
Exercised during the period, Weighted-Average Exercise Price (in dollars per share) 33.40    
Canceled, forfeited, or expired during the period, Weighted-Average Exercise Price (in dollars per share) 39.12    
Outstanding, end of year, Weighted-Average Exercise Price (in dollars per share) 37.63 $ 36.52  
Vested and expected to vest, Weighted-Average Exercise Price (in dollars per share) 37.63    
Exercisable, end of year, Weighted-Average Exercise Price (in dollars per share) $ 37.35    
Outstanding, end of year, Weighted-Average Remaining Contractual Life (years) 5 years 9 months 21 days    
Vested and expected to vest, Weighted-Average Remaining Contractual Life (years) 5 years 9 months 21 days    
Exercisable, end of year, Weighted-Average Remaining Contractual Life (years) 4 years 11 months    
Outstanding, end of year, Aggregate Intrinsic Value $ 2,759,060    
Vested and expected to vest, Aggregate Intrinsic Value 2,756,896    
Exercisable, end of year, Aggregate Intrinsic Value $ 2,321,846    
Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]      
Granted, weighted-average grant date fair value (in dollars per share) $ 11.26 9.53 $ 10.51
Unvested Shares [Member]      
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]      
Granted during the period (in shares) 77,339    
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract]      
Outstanding, beginning of year, Weighted-Average Exercise Price (in dollars per share) $ 39.96    
Granted during the period, Weighted-Average Exercise Price (in dollars per share) 37.00    
Exercised during the period, Weighted-Average Exercise Price (in dollars per share) 40.61    
Canceled, forfeited, or expired during the period, Weighted-Average Exercise Price (in dollars per share) 39.53    
Outstanding, end of year, Weighted-Average Exercise Price (in dollars per share) $ 38.48 $ 39.96  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Number of Shares [Roll Forward]      
Nonvested, beginning of year (in shares) 278,495    
Vested during period (in shares) (138,214)    
Canceled or forfeited during period (in shares) (1,650)    
Nonvested, end of year (in shares) 215,970 278,495  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]      
Unvested, beginning of year, weighted-average grant date fair value (in dollars per share) $ 10.27    
Granted, weighted-average grant date fair value (in dollars per share) 11.26    
Vested during period, weighted-average grant date fair value (in dollars per share) 10.60    
Canceled or forfeited during period, weighted-average grant date fair value (in dollars per share) 12.26    
Unvested, end of period, weighted-average grant date fair value (in dollars per share) $ 10.39 $ 10.27