Investments In Joint Ventures (Aggregate Balance Sheet And Statement Of Income Data For Unconsolidated Joint Ventures) (Details) (USD $)	3 Months Ended				12 Months Ended
	Mar. 31, 2014		Mar. 31, 2013		Dec. 31, 2013
Investments In Joint Ventures [Abstract]
Total assets	$ 739,200,000	[1]			$ 790,200,000	[1]
Total third-party debt	517,000,000				530,700,000
Total equity	203,700,000				229,600,000
Total revenues (1)	25,100,000	[1]	22,300,000	[1]
Gain on sale of operating properties, net of tax	18,500,000		0
Net income	20,000,000		2,000,000
Equity in income (2)	4,290,000	[2]	934,000	[2]
Schedule of Equity Method Investments [Line Items]
Number of operating properties sold	0				12
Sale of two operating properties within the funds in 2014
Schedule of Equity Method Investments [Line Items]
Revenues from discontinued operations attributable to unconsolidated joint venture	1,100,000		1,800,000
Number of operating properties sold	2
Sale of 16 operating properties within two unconsolidated joint ventures in 2013 [Member]
Schedule of Equity Method Investments [Line Items]
Revenues from discontinued operations attributable to unconsolidated joint venture			$ 8,400,000
Number of operating properties sold					16

[1] Excludes approximately $1.1 million and $1.8 million for the three months ended March 31, 2014, and 2013, respectively, related to the sale of two operating properties by the funds during the first quarter of 2014. Additionally, excludes approximately $8.4 million for the three months ended March 31, 2013, related to the sale of 16 operating properties within two of our unconsolidated joint ventures in May and December 2013.

[2] Equity in income excludes our ownership interest of fee income from various property management services provided by us to the funds.