Investment In Real Estate Joint Ventures And Partnerships (Schedule Of Combined Condensed Statements Of Operations) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Schedule of Equity Method Investments [Line Items]
Revenues, net	$ 130,521	$ 123,302	$ 388,304	$ 363,124
Expenses:
Depreciation and amortization	36,694	35,348	113,948	107,039
Interest, net	24,373	26,018	73,263	68,482
Operating	23,454	24,430	71,989	70,962
Real estate taxes, net	15,412	14,717	46,419	42,696
General and administrative	6,146	5,964	17,879	18,812
Provision for income taxes	(284)	(226)	(1,885)	(256)
Impairment loss	0	2,358	0	2,579
Operating income	32,703	21,689	87,633	84,663
Unconsolidated [Member]
Schedule of Equity Method Investments [Line Items]
Revenues, net	41,561	40,804	116,430	124,064
Expenses:
Depreciation and amortization	9,823	11,343	30,836	34,922
Interest, net	5,932	7,131	17,692	22,091
Operating	6,939	7,298	20,073	20,859
Real estate taxes, net	4,378	4,739	13,824	14,335
General and administrative	191	187	721	637
Provision for income taxes	60	63	343	211
Impairment loss	0	59	0	1,887
Total	27,323	30,820	83,489	94,942
Operating income	$ 14,238	$ 9,984	$ 32,941	$ 29,122