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Capital Structure (Schedule Of Number Of Shares, Net Of Treasury) (Details) - shares | Dec. 31, 2019 | Dec. 31, 2018
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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

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- Definition Number Of Shares, Net Of Treasury Excluding Non-Vested Equity Shares That Have Not Vested + References No definition available. + Details
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- Definition Number of non-vested options outstanding. + References No definition available. + Details
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- Definition Number of shares issued which are neither cancelled nor held in the treasury. + References No definition available. + Details
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- References No definition available. + Details
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