Recent Transactions (Summary Of Income From Property Held For Sale) (Details) - USD ($) $ in Thousands |
Sep. 30, 2016 |
Dec. 31, 2015 |
|---|---|---|
| Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] | ||
| Less - accumulated depreciation | $ (1,351,825) | $ (1,464,482) |
| Rental property held for sale, net | 102,798 | |
| Disposal Group, Held-for-sale, Not Discontinued Operations [Member] | ||
| Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] | ||
| Land | 34,802 | |
| Buildings and improvements | 165,231 | |
| Less - accumulated depreciation | (72,842) | |
| Less: Unrealized losses on properties held for sale | (24,393) | |
| Rental property held for sale, net | $ 102,798 |