Investments In Unconsolidated Joint Ventures (Summary Of Financial Position Of Unconsolidated Joint Ventures) (Details) - USD ($) $ in Thousands |
Dec. 31, 2016 |
Dec. 31, 2015 |
|---|---|---|
| Schedule of Equity Method Investments [Line Items] | ||
| Rental property, net | $ 1,746,233 | $ 1,781,621 |
| Other assets | 278,289 | 307,000 |
| Total assets | 2,024,522 | 2,088,621 |
| Mortgages and loans payable | 1,350,973 | 1,298,293 |
| Other liabilities | 247,212 | 215,951 |
| Partners'/members' capital | 426,337 | 574,377 |
| Total liabilities and partners'/members' capital | 2,024,522 | 2,088,621 |
| Company's net investment in unconsolidated joint ventures | $ 320,047 | $ 303,457 |