Disclosure Of Fair Value Of Assets And Liabilities (Details) - USD ($) |
Jun. 30, 2016 |
Dec. 31, 2015 |
|---|---|---|
| Disclosure Of Fair Value Of Assets And Liabilities [Abstract] | ||
| Fair value of Company's long-term debt | $ 2,302,856,000 | $ 2,150,507,000 |
| Principal balance outstanding | $ 2,256,955,000 | $ 2,145,393,000 |
| X | ||||||||||
- 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
|
| X | ||||||||||
- 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
|
| X | ||||||||||
- References No definition available.
|