Disclosure Of Fair Value Of Assets And Liabilities (Narrative) (Details) - USD ($) |
Sep. 30, 2017 |
Dec. 31, 2016 |
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| Disclosure Of Fair Value Of Assets And Liabilities [Abstract] | ||
| Fair value of Company's long-term debt | $ 2,825,816,000 | $ 2,308,488,000 |
| Principal balance outstanding | $ 2,839,186,000 | $ 2,340,009,000 |
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- Definition Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Fair value portion of debt instrument payable, including, but not limited to, notes payable and loans payable. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- References No definition available.
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