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Share-Based Compensation (Stock Option Plans) (Details) - USD ($)
 12 Months Ended
Jun. 30, 2019
Jun. 30, 2018
Jun. 30, 2017
Options      
Outstanding, beginning of year (in shares) 897,120    
Granted during the period (in shares) 2,110    
Exercised during the period (in shares) (43,975)    
Canceled, forfeited or expired during the period (in shares) (4,560)    
Outstanding, end of year (in shares) 850,695 897,120  
Vested and expected to vest at June 30, 2018 (in shares) 850,220    
Exercisable, end of year (in shares) 748,263    
Weighted- Average Exercise Price      
Outstanding, beginning of year (in dollars per share) $ 37.33    
Granted during the period (in dollars per share) 39.35    
Exercised during the period (in dollars per share) 33.21    
Canceled, forfeited, or expired during the period (in dollars per share) 34.35    
Outstanding, end of year (in dollars per share) 37.57 $ 37.33  
Vested and expected to vest (in dollars per share) 37.57    
Exercisable, end of year (in dollars per share) $ 37.91    
Weighted- Average Remaining Contractual Life      
Outstanding, end of year (years) 5 years 18 days    
Vested and expected to vest (years) 5 years 18 days    
Exercisable, end of year (years) 4 years 7 months 9 days    
Aggregate Intrinsic Value      
Outstanding, end of year $ 259,658    
Vested and expected to vest 259,467    
Exercisable, end of year $ 257,612    
Weighted Average Grant Date Fair- Value      
Granted (in dollars per share) $ 11.86 10.60 $ 11.26
Unvested Shares [Member]      
Options      
Granted during the period (in shares) 2,110    
Weighted- Average Exercise Price      
Outstanding, beginning of year (in dollars per share) $ 35.69    
Granted during the period (in dollars per share) 39.35    
Exercised during the period (in dollars per share) 36.45    
Canceled, forfeited, or expired during the period (in dollars per share) 34.35    
Outstanding, end of year (in dollars per share) $ 35.03 $ 35.69  
Options      
Nonvested, beginning of year (in shares) 211,566    
Vested during period (in shares) (106,684)    
Canceled or forfeited (in shares) (4,560)    
Nonvested, end of year (in shares) 102,432 211,566  
Weighted Average Grant Date Fair- Value      
Unvested, beginning of year (in dollars per share) $ 10.54    
Granted (in dollars per share) 11.86    
Vested (in dollars per share) 10.33    
Canceled or forfeited (in dollars per share) 10.62    
Unvested, end of period (in dollars per share) $ 10.78 $ 10.54