Capital Structure (Schedule Of Number Of Shares, Net Of Treasury) (Details) - shares	Mar. 31, 2020	Mar. 31, 2019
Capital Structure [Abstract]
Number of shares, net of treasury: Statement of changes in equity	57,118,925	56,815,925
Non-vested equity shares that have not vested as of end of period	1,115,500	831,408
Number of shares, net of treasury excluding non-vested equity shares that have not vested	56,003,425	55,984,517