Noncontrolling Interests (Summary of Noncontrolling Interests) (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012		Dec. 31, 2011
Redeemable noncontrolling interests	$ 22,621		$ 22,804
Total noncontrolling interests included in stockholders' equity	207,933		207,886
Danbury Green [Member]
Redeemable noncontrolling interests	7,720	[1]	7,720	[1]
Southbury Green [Member]
Redeemable noncontrolling interests	11,242	[2]	11,242	[2]
Vestar/EQY Canyon Trails LLC [Member]
Redeemable noncontrolling interests	2,670	[3]	2,853	[3]
Walden Woods Village Ltd [Member]
Redeemable noncontrolling interests	989	[4]	989	[4]
CapCo [Member]
Total noncontrolling interests included in stockholders' equity	206,145		206,145
DIM [Member]
Total noncontrolling interests included in stockholders' equity	1,203		1,132
Vestar/EQY Talega LLC [Member]
Total noncontrolling interests included in stockholders' equity	160	[5]	181	[5]
Vestar/EQY Vernola LLC [Member]
Total noncontrolling interests included in stockholders' equity	$ 425	[6]	$ 428	[6]

[1] This entity owns the Danbury Green Shopping Center.

[2] This entity owns the Southbury Green Shopping Center.

[3] This entity owns the Canyon Trails Shopping Center.

[4] We have entered into a redemption agreement whereby our joint venture partner can request that we purchase their interest at any time before January 1, 2014.

[5] Holds our interest in Talega Village Center JV, LLC.

[6] Holds our interest in Vernola Marketplace JV, LLC.