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Shareholders' Equity (Schedule Of Dividends) (Parenthetical) (Details) | 6 Months Ended
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Jun. 30, 2018
Series B [Member] |
Class Of Stock [Line Items] |
Dividend rate percentage | 7.25%
Series C Preferred Stock [Member] |
Class Of Stock [Line Items] |
Dividend rate percentage | 6.50%

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition The percentage rate used to calculate dividend payments on preferred stock. + References No definition available. + Details
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- Details
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Period Type: |

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- Details
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