Investment In Real Estate Joint Ventures And Partnerships (Schedule Of Combined Condensed Statements Of Operations) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Schedule of Equity Method Investments [Line Items]
Revenues, net	$ 33,739	$ 32,515
Expenses:
Depreciation and amortization	8,762	7,849
Interest, net	2,418	2,459
Operating	7,111	6,100
Real estate taxes, net	4,400	4,535
General and administrative	105	69
Provision for income taxes	36	33
Total	22,832	21,045
Gain on dispositions	13,576	17,787
Net income	55,606	12,005
Equity Method Investments [Member]
Expenses:
Gain on dispositions	$ 44,699	$ 535