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Schedule III - Real Estate Assets and Accumulated Depreciation (Details) (USD $)
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances $ 3,723,076,000      
Real Estate and Accumulated Depreciation, Initial Cost of Land 939,366,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 5,992,352,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 1,224,759,000      
Real Estate and Accumulated Depreciation, Sale of Outparcel Land (32,963,000)      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 858,619,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 7,264,895,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 8,123,514,000 8,301,013,000 7,767,819,000 8,611,331,000
Real Estate and Accumulated Depreciation, Accumulated Depreciation (2,056,357,000) (1,972,031,000) (1,762,149,000) (1,721,194,000)
Income Tax Basis [Member]
       
Real Estate and Accumulated Depreciation [Line Items]        
Land and buildings and improvements, gross 7,865,000,000      
Buildings [Member]
       
Real Estate and Accumulated Depreciation [Line Items]        
Estimated useful life 40 years      
Certain Improvements [Member] | Maximum [Member]
       
Real Estate and Accumulated Depreciation [Line Items]        
Estimated useful life 20 years      
Certain Improvements [Member] | Minimum [Member]
       
Real Estate and Accumulated Depreciation [Line Items]        
Estimated useful life 10 years      
Equipment and Fixtures [Member] | Maximum [Member]
       
Real Estate and Accumulated Depreciation [Line Items]        
Estimated useful life 10 years      
Equipment and Fixtures [Member] | Minimum [Member]
       
Real Estate and Accumulated Depreciation [Line Items]        
Estimated useful life 7 years      
Sun Trust Bank Building [Member]
       
Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0      
Real Estate and Accumulated Depreciation, Initial Cost of Land 941,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 18,417,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition (19,358,000)      
Real Estate and Accumulated Depreciation, Sale of Outparcel Land 0      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 0      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 0      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 0      
The Shoppes at Panama City [Member]
       
Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0      
Real Estate and Accumulated Depreciation, Initial Cost of Land 1,010,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 8,294,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition (9,304,000)      
Real Estate and Accumulated Depreciation, Sale of Outparcel Land 0      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 0      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 0      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 0      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 0      
Village at Rivergate [Member]
       
Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0      
Real Estate and Accumulated Depreciation, Initial Cost of Land 2,641,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 2,808,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition (5,449,000)      
Real Estate and Accumulated Depreciation, Sale of Outparcel Land 0      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 0      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 0      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 0      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 0      
Rivergate Mall [Member]
       
Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0      
Real Estate and Accumulated Depreciation, Initial Cost of Land 17,896,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 86,767,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition (104,663,000)      
Real Estate and Accumulated Depreciation, Sale of Outparcel Land 0      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 0      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 0      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 0      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 0      
Lees Summit Land [Member]
       
Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0      
Real Estate and Accumulated Depreciation, Initial Cost of Land 10,992,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition (10,992,000)      
Real Estate and Accumulated Depreciation, Sale of Outparcel Land 0      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 0      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 0      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 0      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 0      
Alamance Crossing [Member]
       
Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 49,350,000      
Real Estate and Accumulated Depreciation, Initial Cost of Land 20,853,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 63,105,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 39,269,000      
Real Estate and Accumulated Depreciation, Sale of Outparcel Land (2,528,000)      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 18,325,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 102,374,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 120,699,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation (20,199,000)      
1500 Sunday Drive [Member]
       
Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0      
Real Estate and Accumulated Depreciation, Initial Cost of Land 812,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 8,872,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition (9,684,000)      
Real Estate and Accumulated Depreciation, Sale of Outparcel Land 0      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 0      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 0      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 0      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 0      
840 Greenbrier Circle [Member]
       
Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0      
Real Estate and Accumulated Depreciation, Initial Cost of Land 2,096,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 3,091,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition (102,000)      
Real Estate and Accumulated Depreciation, Sale of Outparcel Land 0      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 2,096,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 2,989,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 5,085,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation (743,000)      
850 Greenbrier Circle [Member]
       
Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0      
Real Estate and Accumulated Depreciation, Initial Cost of Land 3,154,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 6,881,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition (345,000)      
Real Estate and Accumulated Depreciation, Sale of Outparcel Land 0      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 3,154,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 6,536,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 9,690,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation (1,225,000)      
Arbor Place [Member]
       
Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 119,319,000      
Real Estate and Accumulated Depreciation, Initial Cost of Land 7,862,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 95,330,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 24,280,000      
Real Estate and Accumulated Depreciation, Sale of Outparcel Land 0      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 7,862,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 119,610,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 127,472,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation (48,683,000)      
Asheville Mall [Member]
       
Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 74,819,000      
Real Estate and Accumulated Depreciation, Initial Cost of Land 7,139,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 58,747,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 49,461,000      
Real Estate and Accumulated Depreciation, Sale of Outparcel Land (805,000)      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 6,334,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 108,208,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 114,542,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation (41,478,000)      
Bonita Lakes Mall [Member]
       
Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0      
Real Estate and Accumulated Depreciation, Initial Cost of Land 4,924,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 31,933,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 6,700,000      
Real Estate and Accumulated Depreciation, Sale of Outparcel Land (985,000)      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 4,924,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 37,648,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 42,572,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation (16,505,000)      
Brookfield Square [Member]
       
Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 90,117,000      
Real Estate and Accumulated Depreciation, Initial Cost of Land 8,996,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 84,250,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 45,413,000      
Real Estate and Accumulated Depreciation, Sale of Outparcel Land (18,000)      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 9,170,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 129,471,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 138,641,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation (46,005,000)      
Burnsville Center [Member]
       
Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 77,565,000      
Real Estate and Accumulated Depreciation, Initial Cost of Land 12,804,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 71,355,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 52,440,000      
Real Estate and Accumulated Depreciation, Sale of Outparcel Land (1,157,000)      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 16,102,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 119,340,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 135,442,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation (44,771,000)      
Cary Towne Center [Member]
       
Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 53,679,000      
Real Estate and Accumulated Depreciation, Initial Cost of Land 23,688,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 74,432,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 27,383,000      
Real Estate and Accumulated Depreciation, Sale of Outparcel Land 0      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 23,701,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 101,802,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 125,503,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation (33,569,000)      
Chapel Hill Mall [Member]
       
Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 68,681,000      
Real Estate and Accumulated Depreciation, Initial Cost of Land 6,578,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 68,043,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 13,764,000      
Real Estate and Accumulated Depreciation, Sale of Outparcel Land 0      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 6,578,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 81,807,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 88,385,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation (22,428,000)      
Cherryvale Mall [Member]
       
Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 80,364,000      
Real Estate and Accumulated Depreciation, Initial Cost of Land 11,892,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 63,973,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 54,905,000      
Real Estate and Accumulated Depreciation, Sale of Outparcel Land (1,667,000)      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 11,608,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 117,495,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 129,103,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation (36,086,000)      
Chesterfield Mall [Member]
       
Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 140,000,000      
Real Estate and Accumulated Depreciation, Initial Cost of Land 11,083,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 282,140,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 2,433,000      
Real Estate and Accumulated Depreciation, Sale of Outparcel Land 0      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 11,083,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 284,573,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 295,656,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation (58,711,000)      
Citadel Mall [Member]
       
Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 68,169,000      
Real Estate and Accumulated Depreciation, Initial Cost of Land 10,990,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 44,008,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition (30,065,000)      
Real Estate and Accumulated Depreciation, Sale of Outparcel Land (1,289,000)      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 4,926,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 18,718,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 23,644,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation (461,000)      
College Square [Member]
       
Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0      
Real Estate and Accumulated Depreciation, Initial Cost of Land 2,954,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 17,787,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 22,847,000      
Real Estate and Accumulated Depreciation, Sale of Outparcel Land (88,000)      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 2,866,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 40,634,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 43,500,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation (18,915,000)      
Columbia Place [Member]
       
Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 27,265,000      
Real Estate and Accumulated Depreciation, Initial Cost of Land 1,526,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 52,348,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition (47,218,000)      
Real Estate and Accumulated Depreciation, Sale of Outparcel Land (423,000)      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 1,103,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 5,130,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 6,233,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation (476,000)      
Cross Creek Mall [Member]
       
Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 133,964,000      
Real Estate and Accumulated Depreciation, Initial Cost of Land 19,155,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 104,353,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 31,147,000      
Real Estate and Accumulated Depreciation, Sale of Outparcel Land 0      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 20,169,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 134,486,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 154,655,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation (32,559,000)      
Dakota Square Mall [Member]
       
Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 57,642,000      
Real Estate and Accumulated Depreciation, Initial Cost of Land 4,552,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 87,625,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 2,296,000      
Real Estate and Accumulated Depreciation, Sale of Outparcel Land 0      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 4,552,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 89,921,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 94,473,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation (4,401,000)      
Eastland Mall [Member]
       
Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 59,400,000      
Real Estate and Accumulated Depreciation, Initial Cost of Land 5,746,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 75,893,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 7,255,000      
Real Estate and Accumulated Depreciation, Sale of Outparcel Land (754,000)      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 5,304,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 82,836,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 88,140,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation (24,442,000)      
East Towne Mall [Member]
       
Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 68,539,000      
Real Estate and Accumulated Depreciation, Initial Cost of Land 4,496,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 63,867,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 41,566,000      
Real Estate and Accumulated Depreciation, Sale of Outparcel Land (366,000)      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 4,130,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 105,433,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 109,563,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation (35,160,000)      
Eastgate Mall [Member]
       
Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 41,101,000      
Real Estate and Accumulated Depreciation, Initial Cost of Land 13,046,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 44,949,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 26,666,000      
Real Estate and Accumulated Depreciation, Sale of Outparcel Land (1,017,000)      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 12,029,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 71,615,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 83,644,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation (23,936,000)      
Fashion Square [Member]
       
Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 40,675,000      
Real Estate and Accumulated Depreciation, Initial Cost of Land 15,218,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 64,970,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 11,513,000      
Real Estate and Accumulated Depreciation, Sale of Outparcel Land 0      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 15,218,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 76,483,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 91,701,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation (26,199,000)      
Fayette Mall [Member]
       
Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 175,318,000      
Real Estate and Accumulated Depreciation, Initial Cost of Land 25,194,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 84,267,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 72,269,000      
Real Estate and Accumulated Depreciation, Sale of Outparcel Land 11,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 25,205,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 156,536,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 181,741,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation (41,777,000)      
Frontier Mall [Member]
       
Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0      
Real Estate and Accumulated Depreciation, Initial Cost of Land 2,681,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 15,858,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 18,654,000      
Real Estate and Accumulated Depreciation, Sale of Outparcel Land 0      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 2,681,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 34,512,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 37,193,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation (18,867,000)      
Foothills Mall [Member]
       
Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0      
Real Estate and Accumulated Depreciation, Initial Cost of Land 5,558,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 25,244,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 11,652,000      
Real Estate and Accumulated Depreciation, Sale of Outparcel Land 0      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 5,558,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 36,896,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 42,454,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation (22,010,000)      
Greenbriar Mall [Member]
       
Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 75,543,000      
Real Estate and Accumulated Depreciation, Initial Cost of Land 3,181,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 107,355,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 12,887,000      
Real Estate and Accumulated Depreciation, Sale of Outparcel Land (626,000)      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 2,555,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 120,242,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 122,797,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation (30,140,000)      
Hamilton Place [Member]
       
Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 103,888,000      
Real Estate and Accumulated Depreciation, Initial Cost of Land 3,532,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 42,623,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 39,866,000      
Real Estate and Accumulated Depreciation, Sale of Outparcel Land (441,000)      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 3,091,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 82,489,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 85,580,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation (41,954,000)      
Hanes Mall [Member]
       
Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 153,977,000      
Real Estate and Accumulated Depreciation, Initial Cost of Land 17,176,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 133,376,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 45,635,000      
Real Estate and Accumulated Depreciation, Sale of Outparcel Land (948,000)      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 16,808,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 178,431,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 195,239,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation (57,508,000)      
Harford Mall [Member]
       
Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0      
Real Estate and Accumulated Depreciation, Initial Cost of Land 8,699,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 45,704,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 21,590,000      
Real Estate and Accumulated Depreciation, Sale of Outparcel Land 0      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 8,699,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 67,294,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 75,993,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation (19,236,000)      
Hickory Point [Member]
       
Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 29,005,000      
Real Estate and Accumulated Depreciation, Initial Cost of Land 10,731,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 31,728,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 12,450,000      
Real Estate and Accumulated Depreciation, Sale of Outparcel Land (293,000)      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 10,439,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 44,177,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 54,616,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation (14,573,000)      
Honey Creek Mall [Member]
       
Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 29,988,000      
Real Estate and Accumulated Depreciation, Initial Cost of Land 3,108,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 83,358,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 12,367,000      
Real Estate and Accumulated Depreciation, Sale of Outparcel Land 0      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 3,108,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 95,725,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 98,833,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation (24,809,000)      
Imperial Valley Mall [Member]
       
Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 51,278,000      
Real Estate and Accumulated Depreciation, Initial Cost of Land 35,378,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 70,549,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 160,000      
Real Estate and Accumulated Depreciation, Sale of Outparcel Land 0      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 35,378,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 70,709,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 106,087,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation (2,478,000)      
Janesville Mall [Member]
       
Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 3,797,000      
Real Estate and Accumulated Depreciation, Initial Cost of Land 8,074,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 26,009,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 8,035,000      
Real Estate and Accumulated Depreciation, Sale of Outparcel Land 0      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 8,074,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 34,044,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 42,118,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation (13,258,000)      
Jefferson Mall [Member]
       
Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 69,599,000      
Real Estate and Accumulated Depreciation, Initial Cost of Land 13,125,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 40,234,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 23,653,000      
Real Estate and Accumulated Depreciation, Sale of Outparcel Land (521,000)      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 12,604,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 63,887,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 76,491,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation (20,828,000)      
Kirkwood Mall [Member]
       
Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 39,778,000      
Real Estate and Accumulated Depreciation, Initial Cost of Land 3,368,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 118,945,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 963,000      
Real Estate and Accumulated Depreciation, Sale of Outparcel Land 0      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 3,368,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 119,908,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 123,276,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation (3,902,000)      
The Lakes Mall [Member]
       
Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0      
Real Estate and Accumulated Depreciation, Initial Cost of Land 3,328,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 42,366,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 11,398,000      
Real Estate and Accumulated Depreciation, Sale of Outparcel Land 0      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 3,328,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 53,764,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 57,092,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation (21,896,000)      
Lakeshore Mall [Member]
       
Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0      
Real Estate and Accumulated Depreciation, Initial Cost of Land 1,443,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 28,819,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 7,210,000      
Real Estate and Accumulated Depreciation, Sale of Outparcel Land (169,000)      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 1,274,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 36,029,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 37,303,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation (18,182,000)      
Laurel Park [Member]
       
Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0      
Real Estate and Accumulated Depreciation, Initial Cost of Land 13,289,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 92,579,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 10,005,000      
Real Estate and Accumulated Depreciation, Sale of Outparcel Land 0      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 13,289,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 102,584,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 115,873,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation (32,705,000)      
Layton Hills Mall [Member]
       
Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 96,433,000      
Real Estate and Accumulated Depreciation, Initial Cost of Land 20,464,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 99,836,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 12,569,000      
Real Estate and Accumulated Depreciation, Sale of Outparcel Land (275,000)      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 20,189,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 112,405,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 132,594,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation (31,971,000)      
Madison Square [Member]
       
Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0      
Real Estate and Accumulated Depreciation, Initial Cost of Land 17,596,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 39,186,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition (48,810,000)      
Real Estate and Accumulated Depreciation, Sale of Outparcel Land 0      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 2,550,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 5,422,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 7,972,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 0      
Mall Del Norte [Member]
       
Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 113,400,000      
Real Estate and Accumulated Depreciation, Initial Cost of Land 21,734,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 142,049,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 49,273,000      
Real Estate and Accumulated Depreciation, Sale of Outparcel Land 0      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 21,734,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 191,322,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 213,056,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation (57,901,000)      
Acadiana Mall [Member]
       
Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 134,933,000      
Real Estate and Accumulated Depreciation, Initial Cost of Land 22,511,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 145,769,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 14,875,000      
Real Estate and Accumulated Depreciation, Sale of Outparcel Land 0      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 22,511,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 160,644,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 183,155,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation (57,868,000)      
Midland Mall [Member]
       
Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0      
Real Estate and Accumulated Depreciation, Initial Cost of Land 529,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 103,678,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 67,057,000      
Real Estate and Accumulated Depreciation, Sale of Outparcel Land 0      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 2,232,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 169,032,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 171,264,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation (66,114,000)      
Mid Rivers Mall [Member]
       
Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 33,894,000      
Real Estate and Accumulated Depreciation, Initial Cost of Land 10,321,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 29,429,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 9,591,000      
Real Estate and Accumulated Depreciation, Sale of Outparcel Land 0      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 10,321,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 39,020,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 49,341,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation (14,725,000)      
Mid Rivers Mall [Member]
       
Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0      
Real Estate and Accumulated Depreciation, Initial Cost of Land 16,384,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 170,582,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 12,798,000      
Real Estate and Accumulated Depreciation, Sale of Outparcel Land 0      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 16,384,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 183,380,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 199,764,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation (37,655,000)      
Monroeville Mall [Member]
       
Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0      
Real Estate and Accumulated Depreciation, Initial Cost of Land 22,195,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 177,214,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 56,942,000      
Real Estate and Accumulated Depreciation, Sale of Outparcel Land 0      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 24,716,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 231,635,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 256,351,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation (55,932,000)      
Northgate Mall [Member]
       
Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0      
Real Estate and Accumulated Depreciation, Initial Cost of Land 2,330,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 8,960,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 10,406,000      
Real Estate and Accumulated Depreciation, Sale of Outparcel Land 0      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 2,330,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 19,366,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 21,696,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation (1,167,000)      
Northwoods Mall [Member]
       
Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0      
Real Estate and Accumulated Depreciation, Initial Cost of Land 9,977,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 65,481,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 33,633,000      
Real Estate and Accumulated Depreciation, Sale of Outparcel Land 0      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 10,962,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 98,129,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 109,091,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation (30,191,000)      
Northwoods Mall [Member]
       
Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 71,294,000      
Real Estate and Accumulated Depreciation, Initial Cost of Land 14,867,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 49,647,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 19,460,000      
Real Estate and Accumulated Depreciation, Sale of Outparcel Land (2,339,000)      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 12,528,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 69,107,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 81,635,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation (23,035,000)      
Old Hickory Mall [Member]
       
Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0      
Real Estate and Accumulated Depreciation, Initial Cost of Land 15,527,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 29,413,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 6,508,000      
Real Estate and Accumulated Depreciation, Sale of Outparcel Land 0      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 15,527,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 35,921,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 51,448,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation (12,958,000)      
Outlet Shoppes at Atlanta [Member]
       
Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 79,902,000      
Real Estate and Accumulated Depreciation, Initial Cost of Land 7,186,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 96,640,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition (42,216,000)      
Real Estate and Accumulated Depreciation, Sale of Outparcel Land 0      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 7,186,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 54,424,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 61,610,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation (1,220,000)      
Outlet Shoppes at El Paso [Member]
       
Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 65,465,000      
Real Estate and Accumulated Depreciation, Initial Cost of Land 9,239,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 96,640,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 1,218,000      
Real Estate and Accumulated Depreciation, Sale of Outparcel Land 0      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 9,239,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 97,858,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 107,097,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation (6,677,000)      
Outlet Shoppes at Gettysburg [Member]
       
Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 39,437,000      
Real Estate and Accumulated Depreciation, Initial Cost of Land 20,953,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 22,180,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 463,000      
Real Estate and Accumulated Depreciation, Sale of Outparcel Land 0      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 20,953,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 22,643,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 43,596,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation (2,154,000)      
Outlet Shoppes at Oklahoma City [Member]
       
Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 57,812,000      
Real Estate and Accumulated Depreciation, Initial Cost of Land 8,364,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 50,268,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 11,778,000      
Real Estate and Accumulated Depreciation, Sale of Outparcel Land 0      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 8,368,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 62,042,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 70,410,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation (9,788,000)      
Park Plaza Mall [Member]
       
Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 89,991,000      
Real Estate and Accumulated Depreciation, Initial Cost of Land 23,850,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 47,390,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 49,644,000      
Real Estate and Accumulated Depreciation, Sale of Outparcel Land (307,000)      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 23,543,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 97,034,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 120,577,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation (30,350,000)      
Park Plaza Mall [Member]
       
Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 93,909,000      
Real Estate and Accumulated Depreciation, Initial Cost of Land 6,297,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 81,638,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 35,254,000      
Real Estate and Accumulated Depreciation, Sale of Outparcel Land 0      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 6,304,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 116,885,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 123,189,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation (38,851,000)      
Pearland Town Center [Member]
       
Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 39,433,000      
Real Estate and Accumulated Depreciation, Initial Cost of Land 6,364,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 67,067,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 1,883,000      
Real Estate and Accumulated Depreciation, Sale of Outparcel Land 0      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 6,364,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 68,950,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 75,314,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation (8,585,000)      
Pearland Town Center [Member]
       
Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 17,570,000      
Real Estate and Accumulated Depreciation, Initial Cost of Land 16,300,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 108,615,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 13,849,000      
Real Estate and Accumulated Depreciation, Sale of Outparcel Land (366,000)      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 15,443,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 122,955,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 138,398,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation (27,284,000)      
Randolph Mall [Member]
       
Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0      
Real Estate and Accumulated Depreciation, Initial Cost of Land 3,936,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 48,948,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 12,167,000      
Real Estate and Accumulated Depreciation, Sale of Outparcel Land (327,000)      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 3,608,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 61,116,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 64,724,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation (27,005,000)      
Regency Mall [Member]
       
Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0      
Real Estate and Accumulated Depreciation, Initial Cost of Land 4,547,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 13,927,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 10,442,000      
Real Estate and Accumulated Depreciation, Sale of Outparcel Land 0      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 4,547,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 24,369,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 28,916,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation (7,888,000)      
Richland Mall [Member]
       
Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0      
Real Estate and Accumulated Depreciation, Initial Cost of Land 3,384,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 36,839,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 15,238,000      
Real Estate and Accumulated Depreciation, Sale of Outparcel Land 0      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 4,244,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 51,217,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 55,461,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation (18,577,000)      
Rivergate Mall [Member]
       
Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0      
Real Estate and Accumulated Depreciation, Initial Cost of Land 9,874,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 34,793,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 9,243,000      
Real Estate and Accumulated Depreciation, Sale of Outparcel Land 0      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 9,887,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 44,023,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 53,910,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation (14,581,000)      
River Ridge Mall [Member]
       
Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0      
Real Estate and Accumulated Depreciation, Initial Cost of Land 4,824,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 59,052,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 12,413,000      
Real Estate and Accumulated Depreciation, Sale of Outparcel Land (94,000)      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 4,731,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 71,464,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 76,195,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation (15,738,000)      
South Country Center [Member]
       
Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0      
Real Estate and Accumulated Depreciation, Initial Cost of Land 15,754,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 159,249,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 13,775,000      
Real Estate and Accumulated Depreciation, Sale of Outparcel Land 0      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 15,754,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 173,024,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 188,778,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation (34,169,000)      
Southhaven Town Ctr [Member]
       
Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 40,929,000      
Real Estate and Accumulated Depreciation, Initial Cost of Land 8,255,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 29,380,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 13,207,000      
Real Estate and Accumulated Depreciation, Sale of Outparcel Land 0      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 8,478,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 42,364,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 50,842,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation (12,820,000)      
Southpark Mall [Member]
       
Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 65,531,000      
Real Estate and Accumulated Depreciation, Initial Cost of Land 9,501,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 73,262,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 30,190,000      
Real Estate and Accumulated Depreciation, Sale of Outparcel Land 0      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 11,282,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 101,671,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 112,953,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation (28,350,000)      
Stroud Mall [Member]
       
Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 33,243,000      
Real Estate and Accumulated Depreciation, Initial Cost of Land 14,711,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 23,936,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 21,252,000      
Real Estate and Accumulated Depreciation, Sale of Outparcel Land 0      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 14,711,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 45,188,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 59,899,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation (14,846,000)      
St. Clair Square [Member]
       
Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 122,375,000      
Real Estate and Accumulated Depreciation, Initial Cost of Land 11,027,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 75,620,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 33,946,000      
Real Estate and Accumulated Depreciation, Sale of Outparcel Land 0      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 11,027,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 109,566,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 120,593,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation (43,297,000)      
Sunrise Mall [Member]
       
Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0      
Real Estate and Accumulated Depreciation, Initial Cost of Land 11,156,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 59,047,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition (1,662,000)      
Real Estate and Accumulated Depreciation, Sale of Outparcel Land 0      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 11,156,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 57,385,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 68,541,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation (16,532,000)      
Turtle Creek Mall [Member]
       
Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0      
Real Estate and Accumulated Depreciation, Initial Cost of Land 2,345,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 26,418,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 19,057,000      
Real Estate and Accumulated Depreciation, Sale of Outparcel Land 0      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 3,535,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 44,285,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 47,820,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation (19,671,000)      
Valley View [Member]
       
Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 61,027,000      
Real Estate and Accumulated Depreciation, Initial Cost of Land 15,985,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 77,771,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 17,615,000      
Real Estate and Accumulated Depreciation, Sale of Outparcel Land 0      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 15,999,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 95,372,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 111,371,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation (25,501,000)      
Volusia Mall [Member]
       
Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 51,586,000      
Real Estate and Accumulated Depreciation, Initial Cost of Land 2,526,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 120,242,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 15,885,000      
Real Estate and Accumulated Depreciation, Sale of Outparcel Land 0      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 6,431,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 132,222,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 138,653,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation (32,570,000)      
Walnut Square [Member]
       
Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0      
Real Estate and Accumulated Depreciation, Initial Cost of Land 50,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 15,138,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 16,746,000      
Real Estate and Accumulated Depreciation, Sale of Outparcel Land 0      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 50,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 31,884,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 31,934,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation (17,164,000)      
Wasau Center [Member]
       
Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 18,790,000      
Real Estate and Accumulated Depreciation, Initial Cost of Land 5,231,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 24,705,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 16,901,000      
Real Estate and Accumulated Depreciation, Sale of Outparcel Land (5,231,000)      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 0      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 41,606,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 41,606,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation (16,347,000)      
West Towne Mall [Member]
       
Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 96,811,000      
Real Estate and Accumulated Depreciation, Initial Cost of Land 9,545,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 83,084,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 44,443,000      
Real Estate and Accumulated Depreciation, Sale of Outparcel Land 0      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 9,545,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 127,527,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 137,072,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation (40,435,000)      
WestGate Mall [Member]
       
Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 38,818,000      
Real Estate and Accumulated Depreciation, Initial Cost of Land 2,149,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 23,257,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 45,178,000      
Real Estate and Accumulated Depreciation, Sale of Outparcel Land (432,000)      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 1,742,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 68,410,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 70,152,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation (32,855,000)      
Westmoreland Mall [Member]
       
Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0      
Real Estate and Accumulated Depreciation, Initial Cost of Land 4,621,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 84,215,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 15,056,000      
Real Estate and Accumulated Depreciation, Sale of Outparcel Land 0      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 4,621,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 99,271,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 103,892,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation (32,316,000)      
York Galleria [Member]
       
Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 53,093,000      
Real Estate and Accumulated Depreciation, Initial Cost of Land 5,757,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 63,316,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 9,176,000      
Real Estate and Accumulated Depreciation, Sale of Outparcel Land 0      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 5,757,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 72,492,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 78,249,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation (27,200,000)      
Annex at Monroeville Mall [Member]
       
Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0      
Real Estate and Accumulated Depreciation, Initial Cost of Land 716,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 29,496,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition (707,000)      
Real Estate and Accumulated Depreciation, Sale of Outparcel Land 0      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 716,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 28,789,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 29,505,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation (6,846,000)      
Bonita Crossing [Member]
       
Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0      
Real Estate and Accumulated Depreciation, Initial Cost of Land 794,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 4,786,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 8,679,000      
Real Estate and Accumulated Depreciation, Sale of Outparcel Land 0      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 794,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 13,465,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 14,259,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation (5,286,000)      
Chapel Hill Surban [Member]
       
Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0      
Real Estate and Accumulated Depreciation, Initial Cost of Land 925,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 2,520,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 935,000      
Real Estate and Accumulated Depreciation, Sale of Outparcel Land 0      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 925,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 3,455,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 4,380,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation (948,000)      
Coolsprings Crossing [Member]
       
Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 12,427,000      
Real Estate and Accumulated Depreciation, Initial Cost of Land 2,803,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 14,985,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 4,549,000      
Real Estate and Accumulated Depreciation, Sale of Outparcel Land 0      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 3,554,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 18,783,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 22,337,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation (10,576,000)      
Courtyard at Hickory Hollow [Member]
       
Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0      
Real Estate and Accumulated Depreciation, Initial Cost of Land 3,314,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 2,771,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition (2,099,000)      
Real Estate and Accumulated Depreciation, Sale of Outparcel Land (231,000)      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 1,500,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 2,255,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 3,755,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation (142,000)      
Eastgate Crossing [Member]
       
Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 15,024,000      
Real Estate and Accumulated Depreciation, Initial Cost of Land 707,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 2,424,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 7,963,000      
Real Estate and Accumulated Depreciation, Sale of Outparcel Land (11,000)      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 696,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 10,387,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 11,083,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation (3,149,000)      
Foothills Plaza [Member]
       
Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0      
Real Estate and Accumulated Depreciation, Initial Cost of Land 269,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 4,092,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 1,478,000      
Real Estate and Accumulated Depreciation, Sale of Outparcel Land 0      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 289,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 5,550,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 5,839,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation (3,466,000)      
Frontier Square [Member]
       
Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0      
Real Estate and Accumulated Depreciation, Initial Cost of Land 346,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 684,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 374,000      
Real Estate and Accumulated Depreciation, Sale of Outparcel Land (86,000)      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 260,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 1,058,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 1,318,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation (595,000)      
Gunbarrel Pointe [Member]
       
Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 11,067,000      
Real Estate and Accumulated Depreciation, Initial Cost of Land 4,170,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 10,874,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 3,380,000      
Real Estate and Accumulated Depreciation, Sale of Outparcel Land 0      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 4,170,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 14,254,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 18,424,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation (4,451,000)      
Hamilton Corner [Member]
       
Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 15,289,000      
Real Estate and Accumulated Depreciation, Initial Cost of Land 630,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 5,532,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 5,845,000      
Real Estate and Accumulated Depreciation, Sale of Outparcel Land 0      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 734,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 11,273,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 12,007,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation (5,483,000)      
Hamilton Crossing [Member]
       
Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 10,075,000      
Real Estate and Accumulated Depreciation, Initial Cost of Land 4,014,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 5,906,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 6,705,000      
Real Estate and Accumulated Depreciation, Sale of Outparcel Land (1,370,000)      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 2,644,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 12,611,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 15,255,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation (5,691,000)      
Harford Annex [Member]
       
Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0      
Real Estate and Accumulated Depreciation, Initial Cost of Land 2,854,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 9,718,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 853,000      
Real Estate and Accumulated Depreciation, Sale of Outparcel Land 0      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 2,854,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 10,571,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 13,425,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation (2,629,000)      
The Landing at Arbor Place [Member]
       
Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0      
Real Estate and Accumulated Depreciation, Initial Cost of Land 4,993,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 14,330,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 1,487,000      
Real Estate and Accumulated Depreciation, Sale of Outparcel Land (748,000)      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 4,245,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 15,817,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 20,062,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation (7,248,000)      
Layton Convenience Ctr [Member]
       
Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0      
Real Estate and Accumulated Depreciation, Initial Cost of Land 0      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 8,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 954,000      
Real Estate and Accumulated Depreciation, Sale of Outparcel Land 0      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 0      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 962,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 962,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation (273,000)      
Layton Hills Plaza [Member]
       
Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0      
Real Estate and Accumulated Depreciation, Initial Cost of Land 0      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 2,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 299,000      
Real Estate and Accumulated Depreciation, Sale of Outparcel Land 0      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 0      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 301,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 301,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation (133,000)      
Madison Plaza [Member]
       
Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0      
Real Estate and Accumulated Depreciation, Initial Cost of Land 473,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 2,888,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 3,678,000      
Real Estate and Accumulated Depreciation, Sale of Outparcel Land 0      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 473,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 6,566,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 7,039,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation (4,052,000)      
The Plaza at Fayette Mall [Member]
       
Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 39,833,000      
Real Estate and Accumulated Depreciation, Initial Cost of Land 9,531,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 27,646,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 4,191,000      
Real Estate and Accumulated Depreciation, Sale of Outparcel Land 0      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 9,531,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 31,837,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 41,368,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation (8,294,000)      
Parkdale Crossing [Member]
       
Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0      
Real Estate and Accumulated Depreciation, Initial Cost of Land 2,994,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 7,408,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 2,088,000      
Real Estate and Accumulated Depreciation, Sale of Outparcel Land (355,000)      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 2,639,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 9,496,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 12,135,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation (2,720,000)      
The Shoppes at Hamilton Place [Member]
       
Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0      
Real Estate and Accumulated Depreciation, Initial Cost of Land 4,894,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 11,700,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 1,407,000      
Real Estate and Accumulated Depreciation, Sale of Outparcel Land 0      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 4,894,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 13,107,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 18,001,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation (3,384,000)      
Sunrise Commons [Member]
       
Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0      
Real Estate and Accumulated Depreciation, Initial Cost of Land 1,013,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 7,525,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 1,108,000      
Real Estate and Accumulated Depreciation, Sale of Outparcel Land 0      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 1,013,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 8,633,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 9,646,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation (2,311,000)      
The Shoppes at St Clair [Member]
       
Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 20,187,000      
Real Estate and Accumulated Depreciation, Initial Cost of Land 8,250,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 23,623,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 460,000      
Real Estate and Accumulated Depreciation, Sale of Outparcel Land (5,044,000)      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 3,206,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 24,083,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 27,289,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation (6,419,000)      
The Terrace [Member]
       
Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 13,963,000      
Real Estate and Accumulated Depreciation, Initial Cost of Land 4,166,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 9,929,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 8,097,000      
Real Estate and Accumulated Depreciation, Sale of Outparcel Land 0      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 6,536,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 15,656,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 22,192,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation (4,320,000)      
West Towne Crossing [Member]
       
Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0      
Real Estate and Accumulated Depreciation, Initial Cost of Land 1,151,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 2,955,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 312,000      
Real Estate and Accumulated Depreciation, Sale of Outparcel Land 0      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 1,151,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 3,267,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 4,418,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation (1,013,000)      
WestGate Crossing [Member]
       
Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0      
Real Estate and Accumulated Depreciation, Initial Cost of Land 1,082,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 3,422,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 6,180,000      
Real Estate and Accumulated Depreciation, Sale of Outparcel Land 0      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 1,082,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 9,602,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 10,684,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation (3,563,000)      
Westmoreland South [Member]
       
Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0      
Real Estate and Accumulated Depreciation, Initial Cost of Land 2,898,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 21,167,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 8,955,000      
Real Estate and Accumulated Depreciation, Sale of Outparcel Land 0      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 2,898,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 30,122,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 33,020,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation (8,271,000)      
Cobblestone Village [Member]
       
Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0      
Real Estate and Accumulated Depreciation, Initial Cost of Land 6,082,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 12,070,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition (567,000)      
Real Estate and Accumulated Depreciation, Sale of Outparcel Land (220,000)      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 4,296,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 13,069,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 17,365,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation (2,123,000)      
The Promenade at Dlberville [Member]
       
Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 51,300,000      
Real Estate and Accumulated Depreciation, Initial Cost of Land 16,278,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 48,806,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 14,529,000      
Real Estate and Accumulated Depreciation, Sale of Outparcel Land (706,000)      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 15,879,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 63,028,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 78,907,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation (8,088,000)      
Forum at Grandview [Member]
       
Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0      
Real Estate and Accumulated Depreciation, Initial Cost of Land 9,234,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 17,285,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 14,710,000      
Real Estate and Accumulated Depreciation, Sale of Outparcel Land (288,000)      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 9,048,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 31,893,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 40,941,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation (2,148,000)      
Marshalls Creek [Member]
       
Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0      
Real Estate and Accumulated Depreciation, Initial Cost of Land 6,456,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 15,351,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 0      
Real Estate and Accumulated Depreciation, Sale of Outparcel Land 0      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 6,456,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 15,351,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 21,807,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation (286,000)      
Statesboro Crossing [Member]
       
Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 11,337,000      
Real Estate and Accumulated Depreciation, Initial Cost of Land 2,855,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 17,805,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 362,000      
Real Estate and Accumulated Depreciation, Sale of Outparcel Land (235,000)      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 2,840,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 17,947,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 20,787,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation (2,982,000)      
Waynesville Commons [Member]
       
Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0      
Real Estate and Accumulated Depreciation, Initial Cost of Land 3,511,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 6,141,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 13,000      
Real Estate and Accumulated Depreciation, Sale of Outparcel Land 0      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 3,511,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 6,154,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 9,665,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation (220,000)      
Pemberton Plaza [Member]
       
Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0      
Real Estate and Accumulated Depreciation, Initial Cost of Land 1,284,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 1,379,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 431,000      
Real Estate and Accumulated Depreciation, Sale of Outparcel Land 0      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 1,284,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 1,810,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 3,094,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation (578,000)      
CBL Center [Member]
       
Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 21,095,000      
Real Estate and Accumulated Depreciation, Initial Cost of Land 140,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 24,675,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition (12,000)      
Real Estate and Accumulated Depreciation, Sale of Outparcel Land 0      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 140,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 24,663,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 24,803,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation (12,273,000)      
CBL Center II [Member]
       
Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0      
Real Estate and Accumulated Depreciation, Initial Cost of Land 0      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 13,648,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 1,039,000      
Real Estate and Accumulated Depreciation, Sale of Outparcel Land 0      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 0      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 14,687,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 14,687,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation (3,283,000)      
Oak Branch Business Center [Member]
       
Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0      
Real Estate and Accumulated Depreciation, Initial Cost of Land 535,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 2,192,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition (151,000)      
Real Estate and Accumulated Depreciation, Sale of Outparcel Land 0      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 535,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 2,041,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 2,576,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation (436,000)      
One Oyster Point [Member]
       
Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0      
Real Estate and Accumulated Depreciation, Initial Cost of Land 1,822,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 3,623,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 2,000      
Real Estate and Accumulated Depreciation, Sale of Outparcel Land 0      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 1,822,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 3,625,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 5,447,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation (610,000)      
Pearland Hotel [Member]
       
Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0      
Real Estate and Accumulated Depreciation, Initial Cost of Land 0      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 16,149,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 328,000      
Real Estate and Accumulated Depreciation, Sale of Outparcel Land 0      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 0      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 16,477,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 16,477,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation (3,019,000)      
Pearland Office [Member]
       
Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0      
Real Estate and Accumulated Depreciation, Initial Cost of Land 0      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 7,849,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 1,341,000      
Real Estate and Accumulated Depreciation, Sale of Outparcel Land 0      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 0      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 9,190,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 9,190,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation (662,000)      
Pearland Residential Mgmt [Member]
       
Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0      
Real Estate and Accumulated Depreciation, Initial Cost of Land 0      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 9,666,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 9,000      
Real Estate and Accumulated Depreciation, Sale of Outparcel Land 0      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 0      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 9,675,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 9,675,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation (1,456,000)      
Two Oyster Point [Member]
       
Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0      
Real Estate and Accumulated Depreciation, Initial Cost of Land 1,543,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 3,974,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 359,000      
Real Estate and Accumulated Depreciation, Sale of Outparcel Land 0      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 1,543,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 4,333,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 5,876,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation (1,191,000)      
Other Land [Member]
       
Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 2,983,000      
Real Estate and Accumulated Depreciation, Initial Cost of Land 1,489,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 2,651,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 56,000      
Real Estate and Accumulated Depreciation, Sale of Outparcel Land (214,000)      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 1,279,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 2,703,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 3,982,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation (2,376,000)      
Development in Progress Consisting of Construction and Development Properties [Member]
       
Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0      
Real Estate and Accumulated Depreciation, Initial Cost of Land 0      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 139,383,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 0      
Real Estate and Accumulated Depreciation, Sale of Outparcel Land 0      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 0      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 139,383,000      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 139,383,000      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 0      
General Cinema [Member]
       
Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0      
Real Estate and Accumulated Depreciation, Initial Cost of Land 100,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 1,082,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition (1,182,000)      
Real Estate and Accumulated Depreciation, Sale of Outparcel Land 0      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 0      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 0      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 0      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 0      
Georgia Square [Member]
       
Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0      
Real Estate and Accumulated Depreciation, Initial Cost of Land 2,982,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 31,071,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition (34,053,000)      
Real Estate and Accumulated Depreciation, Sale of Outparcel Land 0      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 0      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 0      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 0      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 0      
Lake Point Office Build [Member]
       
Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0      
Real Estate and Accumulated Depreciation, Initial Cost of Land 1,435,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 14,261,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition (15,696,000)      
Real Estate and Accumulated Depreciation, Sale of Outparcel Land 0      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 0      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 0      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 0      
Panama City Mall [Member]
       
Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0      
Real Estate and Accumulated Depreciation, Initial Cost of Land 9,017,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 37,454,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition (46,471,000)      
Real Estate and Accumulated Depreciation, Sale of Outparcel Land 0      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 0      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 0      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 0      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 0      
Peninsula Business Center I [Member]
       
Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0      
Real Estate and Accumulated Depreciation, Initial Cost of Land 887,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 1,440,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition (2,327,000)      
Real Estate and Accumulated Depreciation, Sale of Outparcel Land 0      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 0      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 0      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 0      
Real Estate and Accumulated Depreciation, Accumulated Depreciation 0      
Peninsula Business Center II [Member]
       
Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0      
Real Estate and Accumulated Depreciation, Initial Cost of Land 1,654,000      
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements 873,000      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition (2,527,000)      
Real Estate and Accumulated Depreciation, Sale of Outparcel Land 0      
Real Estate and Accumulated Depreciation, Carrying Amount of Land 0      
Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements 0      
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements 0      
Real Estate and Accumulated Depreciation, Accumulated Depreciation $ 0