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Stock-based Compensation (Schedule of Stock Option Activity) (Details) - USD ($)
12 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Share-based Payment Arrangement [Abstract]    
Balance, beginning 259,164  
Granted 54,025  
Exercised (3,600)  
Forfeited or expired (32,877)  
Outstanding, ending 276,712 259,164
Vested or expected to vest, end of period 261,573  
Exercisable, end of period 179,520  
Balance, beginning $ 25.16  
Granted 20.50  
Exercised 22.50  
Forfeited or expired 25.05  
Outstanding, ending 24.30 $ 25.16
Vested or expected to vest, end of period 24.34  
Exercisable, end of period $ 24.63  
Outstanding 6 years 1 month 6 days 6 years 4 months 13 days
Granted 9 years 5 months 9 days  
Vested or expected to vest, end of period 5 years 11 months 4 days  
Exercisable, end of period 4 years 6 months 14 days  
Outstanding end of period $ 0  
Vested or expected to vest, end of period 0  
Exercisable, end of period $ 0