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Share - Based Compensation (Details) - USD ($)
$ in Thousands
12 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2019
Compensation costs charged to expense under award programs      
Total compensation costs under award programs $ 8,980 $ 6,954 $ 6,913
Stock Options and Stock Appreciation Rights [ Member]      
Compensation costs charged to expense under award programs      
Total compensation costs under award programs 2,526 2,954 2,440
Performance Shares [Member]      
Compensation costs charged to expense under award programs      
Total compensation costs under award programs 2,494 854 2,082
Restricted stock and Restricted Stock units [Member]      
Compensation costs charged to expense under award programs      
Total compensation costs under award programs $ 3,960 $ 3,146 $ 2,391