XML 13 R78.htm IDEA: XBRL DOCUMENT v3.19.3.a.u2
Capital Structure (Schedule Of Number Of Shares, Net Of Treasury) (Details) - shares
Dec. 31, 2019
Dec. 31, 2018
Capital Structure [Abstract]    
Number of shares, net of treasury: Statement of changes in equity 56,568,425 56,833,925
Non-vested equity shares that have not vested as of end of period 583,908 860,817
Number of shares, net of treasury excluding non-vested equity shares that have not vested 55,984,517 55,973,108