Commitments And Contingencies (Future Minimum Rental Payments Of Ground Leases) (Details) - USD ($) $ in Thousands |
Mar. 31, 2020 |
Mar. 31, 2019 |
|---|---|---|
| Commitments And Contingencies [Abstract] | ||
| 2020 | $ 1,312 | $ 1,750 |
| 2021 | 1,750 | 1,750 |
| 2022 | 1,750 | 1,750 |
| 2023 | 1,756 | 1,756 |
| 2024 | 1,776 | 1,776 |
| 2025 through 2098 | 154,722 | 154,722 |
| Total lease payments | 163,066 | 163,504 |
| Less: imputed interest | (139,298) | (139,748) |
| Total | $ 23,768 | $ 23,756 |