Net Loss on Early Extinguishment of Debt (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended	3 Months Ended
Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009	Mar. 31, 2010 Kings Plaza Regional Shopping Center [Member]
Extinguishment of Debt Disclosure [Line Items]
Early Extinguishment of Debt				$ 27,500
Extinguishment Of Debt Fair Value Of Payments Made				28,738
Net loss on early extinguishment of debt	$ 0	$ 1,238	$ 519	$ 1,238

Amount represents the difference between the fair value of the payments made and the carrying amount of the debt at the time of its extinguishment.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 3: http://www.xbrl.org/2003/role/presentationRef

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