Tenant Leases (Future Minimum Rentals To Be Received Under Non-Cancelable Operating Leases) (Details) $ in Thousands |
6 Months Ended |
|---|---|
|
Jun. 30, 2018
USD ($)
| |
| Property Subject to or Available for Operating Lease [Line Items] | |
| July 1 through December 31, 2018 | $ 174,757 |
| 2019 | 314,369 |
| 2020 | 290,653 |
| 2021 | 265,451 |
| 2022 | 236,924 |
| 2023 and thereafter | 971,472 |
| Total | $ 2,253,626 |
| Tenant Leases [Member] | |
| Property Subject to or Available for Operating Lease [Line Items] | |
| Operating leases with various expiration dates through year | Dec. 31, 2035 |
| Multi-Family Properties [Member] | |
| Property Subject to or Available for Operating Lease [Line Items] | |
| Lease period | 1 year |