Recent Transactions (Schedule Of Properties Which Commenced Initial Operations) (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2020 USD ($) item
Real Estate Properties [Line Items]
Number of Apartment Units	166
Total Development Costs Incurred | $	$ 49,179
Unconsolidated Joint Venture Multi-Family Properties [Member]
Real Estate Properties [Line Items]
Total number of rental units	2,611
Unconsolidated Joint Venture Hotel [Member]
Real Estate Properties [Line Items]
Total number of rental units	351
Emery At Overlook Ridge [Member]
Real Estate Properties [Line Items]
Number of Apartment Units	166
Total Development Costs Incurred | $	$ 49,179
Total number of rental units	326
Number of units in construction	160