Commitments And Contingencies (Ground Lease Agreements) (Narrative) (Details) - USD ($) |
3 Months Ended | |
|---|---|---|
Mar. 31, 2018 |
Mar. 31, 2017 |
|
| Commitments And Contingencies [Abstract] | ||
| Ground lease expense incurred | $ 550,000 | $ 590,000 |
| X | ||||||||||
- Definition Operating Lease, Expense, Including Sublease Rentals No definition available.
|
| X | ||||||||||
- References No definition available.
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