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Shareholders' Equity - Share-Based Compensation Plans (Details) - USD ($)
$ in Thousands
12 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2019
Equity [Abstract]      
Cost not yet recognized $ 5,100    
Cost not yet recognized, period for recognition 2 years 10 months 13 days    
Proceeds from common stock options exercised and employee stock purchase plan $ 1,887 $ 5,506 $ 4,300