Investments In Unconsolidated Joint Ventures (Summary Of Financial Position Of Unconsolidated Joint Ventures) (Details) - USD ($) $ in Thousands |
Mar. 31, 2016 |
Dec. 31, 2015 |
|---|---|---|
| Investments In Unconsolidated Joint Ventures [Abstract] | ||
| Rental property, net | $ 1,736,842 | $ 1,781,621 |
| Other assets | 294,444 | 307,000 |
| Total assets | 2,031,286 | 2,088,621 |
| Mortgages and loans payable | 1,279,688 | 1,298,293 |
| Other liabilities | 215,552 | 215,951 |
| Partners'/members' capital | 536,046 | 574,377 |
| Total liabilities and partners'/members' capital | $ 2,031,286 | $ 2,088,621 |