Discontinued Operations (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011	Mar. 31, 2011 Oak Hollow Mall, High Point [Member]	Dec. 31, 2011 Westridge Square [Member]	Mar. 31, 2012 Settlers Ridge Phase II [Member]	Jun. 30, 2011 Settlers Ridge Phase II [Member]	Mar. 31, 2012 Oak Hollow Square [Member]	Dec. 31, 2011 Oak Hollow Square [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gross sales price			$ 9,000	$ 26,125	$ 19,144		$ 14,247
Extinguishment of Debt, Amount	394,386		40,281
Gain on extinguishment of debt	0	581	31,434
Net sales price				25,768	18,951		13,796
Gain on discontinued operations				160	883
Loss on impairment of real estate			2,746			4,457	255	729
Revenues of discontinued operations	$ 377	$ 1,376