Investment In Real Estate Joint Ventures And Partnerships (Schedule Of Combined Condensed Statements Of Operations) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Schedule of Equity Method Investments [Line Items]
Revenues, net	$ 34,146	$ 36,587	$ 70,068	$ 73,705
Expenses:
Depreciation and amortization	10,605	9,203	19,986	18,583
Interest, net	5,622	4,235	9,630	8,652
Operating	6,358	6,771	13,961	13,236
Real estate taxes, net	4,494	4,725	8,986	9,257
General and administrative	312	333	455	535
(Benefit) provision for income taxes	(31)	43	28	111
Impairment loss	0	7,487	1,303	7,487
Total	27,360	32,797	54,349	57,861
Gain on dispositions	1,033	8,163	46,190	30,685
Net income	19,377	4,055	28,683	17,237
Equity Method Investments [Member]
Expenses:
Gain on sale of non-operating property	0	0	373	0
Gain on dispositions	$ 12,591	$ 265	$ 12,591	$ 1,393