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Common Stock (Tables)
12 Months Ended
Jun. 30, 2019
Common Stock [Abstract]  
Schedule Of Number Of Shares, Net Of Treasury
  2019 2018 2017
Number of shares, net of treasury:      
Statement of changes in equity – common stock 56,568,425 56,685,925 56,369,737
Less: Non-vested equity shares that have not vested as of end of      
year (Note 17) 583,908 765,411 505,473
Number of shares, net of treasury excluding non-vested      
equity shares that have not vested 55,984,517 55,920,514 55,864,264