Tenant Leases (Future Minimum Rentals To Be Received Under Non-Cancelable Operating Leases) (Details) - USD ($) $ in Thousands |
9 Months Ended | |
|---|---|---|
Sep. 30, 2021 |
Dec. 31, 2020 |
|
| Property Subject to or Available for Operating Lease [Line Items] | ||
| October 1 through December 31, 2021 | $ 28,827 | |
| Year one | 116,055 | $ 117,228 |
| Year two | 114,353 | 114,101 |
| Year three | 98,148 | 108,406 |
| Year four | 93,719 | 92,605 |
| Year Five | 88,309 | |
| 2026 and thereafter | 506,554 | 462,920 |
| Total | $ 957,656 | $ 983,569 |
| Tenant Leases [Member] | ||
| Property Subject to or Available for Operating Lease [Line Items] | ||
| Operating leases with various expiration dates through year | 2042 | |
| Multi-Family Properties [Member] | ||
| Property Subject to or Available for Operating Lease [Line Items] | ||
| Lease period | 1 year |