Tenant Leases (Future Minimum Rentals To Be Received Under Non-Cancelable Operating Leases) (Details) - USD ($) $ in Thousands |
3 Months Ended | |
|---|---|---|
Mar. 31, 2021 |
Dec. 31, 2020 |
|
| Property Subject to or Available for Operating Lease [Line Items] | ||
| April 1 through December 31, 2021 | $ 88,961 | |
| Year one | 116,719 | $ 117,228 |
| Year two | 112,200 | 114,101 |
| Year three | 95,845 | 108,406 |
| Year four | 90,836 | 92,605 |
| Year Five | 88,309 | |
| 2026 and thereafter | 483,097 | 462,920 |
| Total | $ 987,658 | $ 983,569 |
| Tenant Leases [Member] | ||
| Property Subject to or Available for Operating Lease [Line Items] | ||
| Operating leases with various expiration dates through year | 2041 | |
| Multi-Family Properties [Member] | ||
| Property Subject to or Available for Operating Lease [Line Items] | ||
| Lease period | 1 year |