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Schedule III - REAL ESTATE ASSETS AND ACCUMULATED DEPRECIATION (Details) - USD ($)
 12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Real Estate And Accumulated Depreciation [Line Items]        
Encumbrances $ 1,401,910,000      
Initial Cost, Land 802,335,000      
Initial Cost, Buildings and Improvements 4,884,040,000      
Costs Capitalized Subsequent to Acquisition 769,490,000      
Sales of Outparcel Land (44,465,000)      
Gross Amounts at Which Carried at Close of Period, Land 730,218,000      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 5,681,182,000      
Gross Amounts at Which Carried at Close of Period, Total 6,411,400,000 $ 7,278,608,000 $ 7,621,930,000 $ 7,947,647,000
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (2,349,404,000) $ (2,493,082,000) $ (2,465,095,000) $ (2,427,108,000)
Land and buildings and improvements, gross $ 7,077,000,000.000      
Buildings        
Real Estate And Accumulated Depreciation [Line Items]        
Useful life of property, plant and equipment 40 years      
Certain Improvements | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Useful life of property, plant and equipment 10 years      
Certain Improvements | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Useful life of property, plant and equipment 20 years      
Equipment and Fixtures | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Useful life of property, plant and equipment 7 years      
Equipment and Fixtures | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Useful life of property, plant and equipment 10 years      
Alamance Crossing, Burlington, NC        
Real Estate And Accumulated Depreciation [Line Items]        
Encumbrances $ 44,538,000      
Initial Cost, Land 20,853,000      
Initial Cost, Buildings and Improvements 62,852,000      
Costs Capitalized Subsequent to Acquisition 40,302,000      
Sales of Outparcel Land (3,373,000)      
Gross Amounts at Which Carried at Close of Period, Land 17,481,000      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 103,153,000      
Gross Amounts at Which Carried at Close of Period, Total 120,634,000      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (40,407,000)      
Arbor Place, Douglasville, GA        
Real Estate And Accumulated Depreciation [Line Items]        
Encumbrances 106,851,000      
Initial Cost, Land 8,508,000      
Initial Cost, Buildings and Improvements 95,088,000      
Costs Capitalized Subsequent to Acquisition 27,558,000      
Gross Amounts at Which Carried at Close of Period, Land 8,508,000      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 122,646,000      
Gross Amounts at Which Carried at Close of Period, Total 131,154,000      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (72,541,000)      
Asheville Mall, Asheville, NC        
Real Estate And Accumulated Depreciation [Line Items]        
Encumbrances 63,949,000      
Initial Cost, Land 7,139,000      
Initial Cost, Buildings and Improvements 58,386,000      
Costs Capitalized Subsequent to Acquisition 65,472,000      
Sales of Outparcel Land (805,000)      
Gross Amounts at Which Carried at Close of Period, Land 6,334,000      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 123,858,000      
Gross Amounts at Which Carried at Close of Period, Total 130,192,000      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (63,033,000)      
Brookfield Square Anchor Redevelopment        
Real Estate And Accumulated Depreciation [Line Items]        
Encumbrances 29,400,000      
Initial Cost, Land 8,996,000      
Initial Cost, Buildings and Improvements 78,533,000      
Costs Capitalized Subsequent to Acquisition 110,322,000      
Sales of Outparcel Land (4,789,000)      
Gross Amounts at Which Carried at Close of Period, Land 20,621,000      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 172,441,000      
Gross Amounts at Which Carried at Close of Period, Total 193,062,000      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (75,250,000)      
Burnsville Center, Burnsville, MN        
Real Estate And Accumulated Depreciation [Line Items]        
Encumbrances 64,867,000      
Initial Cost, Land 12,804,000      
Initial Cost, Buildings and Improvements 71,748,000      
Costs Capitalized Subsequent to Acquisition 58,303,000      
Sales of Outparcel Land (1,157,000)      
Gross Amounts at Which Carried at Close of Period, Land 16,102,000      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 125,596,000      
Gross Amounts at Which Carried at Close of Period, Total 141,698,000      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (68,217,000)      
CherryVale Mall, Rockford, IL        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Cost, Land 11,892,000      
Initial Cost, Buildings and Improvements 64,117,000      
Costs Capitalized Subsequent to Acquisition 55,416,000      
Sales of Outparcel Land (1,667,000)      
Gross Amounts at Which Carried at Close of Period, Land 11,608,000      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 118,150,000      
Gross Amounts at Which Carried at Close of Period, Total 129,758,000      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (57,135,000)      
Cross Creek Mall, Fayetteville, NC        
Real Estate And Accumulated Depreciation [Line Items]        
Encumbrances 111,293,000      
Initial Cost, Land 19,155,000      
Initial Cost, Buildings and Improvements 104,378,000      
Costs Capitalized Subsequent to Acquisition 48,372,000      
Gross Amounts at Which Carried at Close of Period, Land 31,539,000      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 140,366,000      
Gross Amounts at Which Carried at Close of Period, Total 171,905,000      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (64,930,000)      
Dakota Square Mall, Minot, ND        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Cost, Land 4,552,000      
Initial Cost, Buildings and Improvements 87,625,000      
Costs Capitalized Subsequent to Acquisition 34,807,000      
Gross Amounts at Which Carried at Close of Period, Land 4,473,000      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 122,511,000      
Gross Amounts at Which Carried at Close of Period, Total 126,984,000      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (28,932,000)      
East Towne Mall, Madison, WI        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Cost, Land 4,496,000      
Initial Cost, Buildings and Improvements 63,867,000      
Costs Capitalized Subsequent to Acquisition 71,529,000      
Sales of Outparcel Land (909,000)      
Gross Amounts at Which Carried at Close of Period, Land 4,387,000      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 134,596,000      
Gross Amounts at Which Carried at Close of Period, Total 138,983,000      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (57,930,000)      
Eastland Mall, Bloomington, IL        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Cost, Land 5,746,000      
Initial Cost, Buildings and Improvements 75,893,000      
Costs Capitalized Subsequent to Acquisition (54,106,000)      
Sales of Outparcel Land (753,000)      
Gross Amounts at Which Carried at Close of Period, Land 3,150,000      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 23,630,000      
Gross Amounts at Which Carried at Close of Period, Total 26,780,000      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (1,447,000)      
Eastgate Mall        
Real Estate And Accumulated Depreciation [Line Items]        
Encumbrances 32,386,000      
Initial Cost, Land 13,046,000      
Initial Cost, Buildings and Improvements 44,949,000      
Costs Capitalized Subsequent to Acquisition (31,293,000)      
Sales of Outparcel Land (1,017,000)      
Gross Amounts at Which Carried at Close of Period, Land 4,959,000      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 20,726,000      
Gross Amounts at Which Carried at Close of Period, Total 25,685,000      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (933,000)      
Fayette Mall, Lexington, KY        
Real Estate And Accumulated Depreciation [Line Items]        
Encumbrances 146,857,000      
Initial Cost, Land 25,205,000      
Initial Cost, Buildings and Improvements 84,256,000      
Costs Capitalized Subsequent to Acquisition 107,733,000      
Gross Amounts at Which Carried at Close of Period, Land 25,205,000      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 191,989,000      
Gross Amounts at Which Carried at Close of Period, Total 217,194,000      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (73,198,000)      
Frontier Mall, Cheyenne, WY        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Cost, Land 2,681,000      
Initial Cost, Buildings and Improvements 15,858,000      
Costs Capitalized Subsequent to Acquisition 23,037,000      
Sales of Outparcel Land (83,000)      
Gross Amounts at Which Carried at Close of Period, Land 2,598,000      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 38,895,000      
Gross Amounts at Which Carried at Close of Period, Total 41,493,000      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (27,675,000)      
Greenbrier Mall        
Real Estate And Accumulated Depreciation [Line Items]        
Encumbrances 64,801,000      
Initial Cost, Land 3,181,000      
Initial Cost, Buildings and Improvements 107,355,000      
Costs Capitalized Subsequent to Acquisition (54,284,000)      
Sales of Outparcel Land (626,000)      
Gross Amounts at Which Carried at Close of Period, Land 2,555,000      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 53,071,000      
Gross Amounts at Which Carried at Close of Period, Total 55,626,000      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (2,216,000)      
Hamilton Place, Chattanooga, TN        
Real Estate And Accumulated Depreciation [Line Items]        
Encumbrances 100,456,000      
Initial Cost, Land 3,532,000      
Initial Cost, Buildings and Improvements 42,619,000      
Costs Capitalized Subsequent to Acquisition 73,328,000      
Sales of Outparcel Land (2,384,000)      
Gross Amounts at Which Carried at Close of Period, Land 6,542,000      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 110,553,000      
Gross Amounts at Which Carried at Close of Period, Total 117,095,000      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (64,774,000)      
Hanes Mall, Winston-Salem, NC        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Cost, Land 17,176,000      
Initial Cost, Buildings and Improvements 133,376,000      
Costs Capitalized Subsequent to Acquisition 54,422,000      
Sales of Outparcel Land (1,767,000)      
Gross Amounts at Which Carried at Close of Period, Land 17,810,000      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 185,397,000      
Gross Amounts at Which Carried at Close of Period, Total 203,207,000      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (87,926,000)      
Harford Mall, Bel Air, MD        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Cost, Land 8,699,000      
Initial Cost, Buildings and Improvements 45,704,000      
Costs Capitalized Subsequent to Acquisition 21,527,000      
Gross Amounts at Which Carried at Close of Period, Land 8,699,000      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 67,231,000      
Gross Amounts at Which Carried at Close of Period, Total 75,930,000      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (31,296,000)      
Hickory Point Mall        
Real Estate And Accumulated Depreciation [Line Items]        
Encumbrances 27,385,000      
Initial Cost, Land 10,731,000      
Initial Cost, Buildings and Improvements 31,728,000      
Costs Capitalized Subsequent to Acquisition (25,496,000)      
Sales of Outparcel Land (336,000)      
Gross Amounts at Which Carried at Close of Period, Land 4,711,000      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 11,916,000      
Gross Amounts at Which Carried at Close of Period, Total 16,627,000      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (1,945,000)      
Imperial Valley Mall, El Centro, CA        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Cost, Land 35,378,000      
Initial Cost, Buildings and Improvements 71,753,000      
Costs Capitalized Subsequent to Acquisition 8,719,000      
Gross Amounts at Which Carried at Close of Period, Land 40,579,000      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 75,271,000      
Gross Amounts at Which Carried at Close of Period, Total 115,850,000      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (17,741,000)      
Kirkwood Mall        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Cost, Land 3,368,000      
Initial Cost, Buildings and Improvements 118,945,000      
Costs Capitalized Subsequent to Acquisition 26,968,000      
Gross Amounts at Which Carried at Close of Period, Land 3,448,000      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 145,833,000      
Gross Amounts at Which Carried at Close of Period, Total 149,281,000      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (31,568,000)      
Jefferson Mall, Louisville, KY        
Real Estate And Accumulated Depreciation [Line Items]        
Encumbrances 61,943,000      
Initial Cost, Land 13,125,000      
Initial Cost, Buildings and Improvements 40,234,000      
Costs Capitalized Subsequent to Acquisition 45,403,000      
Sales of Outparcel Land (521,000)      
Gross Amounts at Which Carried at Close of Period, Land 17,850,000      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 80,391,000      
Gross Amounts at Which Carried at Close of Period, Total 98,241,000      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (39,864,000)      
Laurel Park, Livonia, MI        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Cost, Land 13,289,000      
Initial Cost, Buildings and Improvements 92,579,000      
Costs Capitalized Subsequent to Acquisition (79,509,000)      
Gross Amounts at Which Carried at Close of Period, Land 7,500,000      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 18,859,000      
Gross Amounts at Which Carried at Close of Period, Total 26,359,000      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (298,000)      
Layton Hills Mall, Layton, UT        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Cost, Land 20,464,000      
Initial Cost, Buildings and Improvements 99,836,000      
Costs Capitalized Subsequent to Acquisition (4,303,000)      
Sales of Outparcel Land (464,000)      
Gross Amounts at Which Carried at Close of Period, Land 13,761,000      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 101,772,000      
Gross Amounts at Which Carried at Close of Period, Total 115,533,000      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (39,776,000)      
Mall Del Norte, Laredo, TX        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Cost, Land 21,734,000      
Initial Cost, Buildings and Improvements 142,049,000      
Costs Capitalized Subsequent to Acquisition 54,029,000      
Sales of Outparcel Land (149,000)      
Gross Amounts at Which Carried at Close of Period, Land 21,667,000      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 195,996,000      
Gross Amounts at Which Carried at Close of Period, Total 217,663,000      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (92,881,000)      
Mayfaire Town Centerand Community Center        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Cost, Land 26,333,000      
Initial Cost, Buildings and Improvements 101,087,000      
Costs Capitalized Subsequent to Acquisition 18,065,000      
Gross Amounts at Which Carried at Close of Period, Land 26,443,000      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 119,042,000      
Gross Amounts at Which Carried at Close of Period, Total 145,485,000      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (16,254,000)      
Meridian Mall        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Cost, Land 2,797,000      
Initial Cost, Buildings and Improvements 103,678,000      
Costs Capitalized Subsequent to Acquisition 69,755,000      
Gross Amounts at Which Carried at Close of Period, Land 4,501,000      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 171,729,000      
Gross Amounts at Which Carried at Close of Period, Total 176,230,000      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (89,929,000)      
Mid Rivers Mall        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Cost, Land 16,384,000      
Initial Cost, Buildings and Improvements 170,582,000      
Costs Capitalized Subsequent to Acquisition (130,301,000)      
Sales of Outparcel Land (4,174,000)      
Gross Amounts at Which Carried at Close of Period, Land 11,840,000      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 40,651,000      
Gross Amounts at Which Carried at Close of Period, Total 52,491,000      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (506,000)      
Monroeville Mall        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Cost, Land 22,911,000      
Initial Cost, Buildings and Improvements 177,214,000      
Costs Capitalized Subsequent to Acquisition 78,513,000      
Gross Amounts at Which Carried at Close of Period, Land 25,432,000      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 253,206,000      
Gross Amounts at Which Carried at Close of Period, Total 278,638,000      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (104,515,000)      
Northgate Mall        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Cost, Land 2,330,000      
Initial Cost, Buildings and Improvements 8,960,000      
Costs Capitalized Subsequent to Acquisition 26,366,000      
Sales of Outparcel Land (492,000)      
Gross Amounts at Which Carried at Close of Period, Land 3,000,000      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 34,164,000      
Gross Amounts at Which Carried at Close of Period, Total 37,164,000      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (13,828,000)      
Northpark Mall        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Cost, Land 9,977,000      
Initial Cost, Buildings and Improvements 65,481,000      
Costs Capitalized Subsequent to Acquisition 44,195,000      
Gross Amounts at Which Carried at Close of Period, Land 11,071,000      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 108,582,000      
Gross Amounts at Which Carried at Close of Period, Total 119,653,000      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (52,065,000)      
Northwoods Mall        
Real Estate And Accumulated Depreciation [Line Items]        
Encumbrances 63,772,000      
Initial Cost, Land 14,867,000      
Initial Cost, Buildings and Improvements 49,647,000      
Costs Capitalized Subsequent to Acquisition 29,887,000      
Sales of Outparcel Land (2,339,000)      
Gross Amounts at Which Carried at Close of Period, Land 12,528,000      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 79,534,000      
Gross Amounts at Which Carried at Close of Period, Total 92,062,000      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (36,119,000)      
Old Hickory Mall        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Cost, Land 15,527,000      
Initial Cost, Buildings and Improvements 29,413,000      
Costs Capitalized Subsequent to Acquisition 8,434,000      
Gross Amounts at Which Carried at Close of Period, Land 15,531,000      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 37,843,000      
Gross Amounts at Which Carried at Close of Period, Total 53,374,000      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (19,138,000)      
Gettysburg Outlet Center, LLC        
Real Estate And Accumulated Depreciation [Line Items]        
Encumbrances 37,140,000      
Initial Cost, Land 20,779,000      
Initial Cost, Buildings and Improvements 22,180,000      
Costs Capitalized Subsequent to Acquisition 3,057,000      
Gross Amounts at Which Carried at Close of Period, Land 21,032,000      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 24,984,000      
Gross Amounts at Which Carried at Close of Period, Total 46,016,000      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (6,882,000)      
The Outlet Shoppes At Laredo        
Real Estate And Accumulated Depreciation [Line Items]        
Encumbrances 41,950,000      
Initial Cost, Land 11,000,000      
Initial Cost, Buildings and Improvements 97,353,000      
Costs Capitalized Subsequent to Acquisition 2,101,000      
Gross Amounts at Which Carried at Close of Period, Land 11,000,000      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 99,454,000      
Gross Amounts at Which Carried at Close of Period, Total 110,454,000      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (12,881,000)      
Park Plaza Mall        
Real Estate And Accumulated Depreciation [Line Items]        
Encumbrances 78,339,000      
Initial Cost, Land 6,297,000      
Initial Cost, Buildings and Improvements 81,638,000      
Costs Capitalized Subsequent to Acquisition (49,978,000)      
Gross Amounts at Which Carried at Close of Period, Land 6,304,000      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 31,653,000      
Gross Amounts at Which Carried at Close of Period, Total 37,957,000      
Parkdale Mall        
Real Estate And Accumulated Depreciation [Line Items]        
Encumbrances 75,826,000      
Initial Cost, Land 23,850,000      
Initial Cost, Buildings and Improvements 47,390,000      
Costs Capitalized Subsequent to Acquisition 80,782,000      
Sales of Outparcel Land (874,000)      
Gross Amounts at Which Carried at Close of Period, Land 24,814,000      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 126,334,000      
Gross Amounts at Which Carried at Close of Period, Total 151,148,000      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (52,005,000)      
Parkway Place Mall        
Real Estate And Accumulated Depreciation [Line Items]        
Encumbrances 33,290,000      
Initial Cost, Land 6,364,000      
Initial Cost, Buildings and Improvements 67,067,000      
Costs Capitalized Subsequent to Acquisition 6,626,000      
Gross Amounts at Which Carried at Close of Period, Land 6,364,000      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 73,693,000      
Gross Amounts at Which Carried at Close of Period, Total 80,057,000      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (22,628,000)      
Pearland Town Center        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Cost, Land 16,300,000      
Initial Cost, Buildings and Improvements 108,615,000      
Costs Capitalized Subsequent to Acquisition 18,888,000      
Sales of Outparcel Land (857,000)      
Gross Amounts at Which Carried at Close of Period, Land 15,252,000      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 127,694,000      
Gross Amounts at Which Carried at Close of Period, Total 142,946,000      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (48,420,000)      
Post Oak Mall        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Cost, Land 3,936,000      
Initial Cost, Buildings and Improvements 48,948,000      
Costs Capitalized Subsequent to Acquisition 17,934,000      
Sales of Outparcel Land (327,000)      
Gross Amounts at Which Carried at Close of Period, Land 3,852,000      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 66,639,000      
Gross Amounts at Which Carried at Close of Period, Total 70,491,000      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (41,689,000)      
Richland Mall        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Cost, Land 9,874,000      
Initial Cost, Buildings and Improvements 34,793,000      
Costs Capitalized Subsequent to Acquisition 23,518,000      
Sales of Outparcel Land (1,225,000)      
Gross Amounts at Which Carried at Close of Period, Land 8,662,000      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 58,298,000      
Gross Amounts at Which Carried at Close of Period, Total 66,960,000      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (26,299,000)      
South Country Center        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Cost, Land 15,754,000      
Initial Cost, Buildings and Improvements 159,249,000      
Costs Capitalized Subsequent to Acquisition 15,821,000      
Gross Amounts at Which Carried at Close of Period, Land 15,790,000      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 175,034,000      
Gross Amounts at Which Carried at Close of Period, Total 190,824,000      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (62,319,000)      
South Haven Town Ctr        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Cost, Land 8,255,000      
Initial Cost, Buildings and Improvements 29,380,000      
Costs Capitalized Subsequent to Acquisition 10,081,000      
Gross Amounts at Which Carried at Close of Period, Land 11,384,000      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 36,332,000      
Gross Amounts at Which Carried at Close of Period, Total 47,716,000      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (15,177,000)      
Southpark Mall        
Real Estate And Accumulated Depreciation [Line Items]        
Encumbrances 58,431,000      
Initial Cost, Land 9,501,000      
Initial Cost, Buildings and Improvements 73,262,000      
Costs Capitalized Subsequent to Acquisition 41,044,000      
Gross Amounts at Which Carried at Close of Period, Land 11,282,000      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 112,525,000      
Gross Amounts at Which Carried at Close of Period, Total 123,807,000      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (50,720,000)      
St Clair Square        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Cost, Land 11,027,000      
Initial Cost, Buildings and Improvements 75,620,000      
Costs Capitalized Subsequent to Acquisition 43,448,000      
Gross Amounts at Which Carried at Close of Period, Land 11,027,000      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 119,068,000      
Gross Amounts at Which Carried at Close of Period, Total 130,095,000      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (61,579,000)      
Stroud Mall        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Cost, Land 14,711,000      
Initial Cost, Buildings and Improvements 23,936,000      
Costs Capitalized Subsequent to Acquisition 23,355,000      
Gross Amounts at Which Carried at Close of Period, Land 14,711,000      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 47,291,000      
Gross Amounts at Which Carried at Close of Period, Total 62,002,000      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (22,289,000)      
Sunrise Mall        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Cost, Land 11,156,000      
Initial Cost, Buildings and Improvements 59,047,000      
Costs Capitalized Subsequent to Acquisition 14,415,000      
Gross Amounts at Which Carried at Close of Period, Land 11,156,000      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 73,462,000      
Gross Amounts at Which Carried at Close of Period, Total 84,618,000      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (30,274,000)      
Turtle Creek Mall        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Cost, Land 2,345,000      
Initial Cost, Buildings and Improvements 26,418,000      
Costs Capitalized Subsequent to Acquisition 19,763,000      
Gross Amounts at Which Carried at Close of Period, Land 3,535,000      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 44,991,000      
Gross Amounts at Which Carried at Close of Period, Total 48,526,000      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (28,471,000)      
Valley View        
Real Estate And Accumulated Depreciation [Line Items]        
Encumbrances 51,514,000      
Initial Cost, Land 15,985,000      
Initial Cost, Buildings and Improvements 77,771,000      
Costs Capitalized Subsequent to Acquisition 24,123,000      
Gross Amounts at Which Carried at Close of Period, Land 15,999,000      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 101,880,000      
Gross Amounts at Which Carried at Close of Period, Total 117,879,000      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (44,460,000)      
Volusia Mall        
Real Estate And Accumulated Depreciation [Line Items]        
Encumbrances 48,626,000      
Initial Cost, Land 2,526,000      
Initial Cost, Buildings and Improvements 120,242,000      
Costs Capitalized Subsequent to Acquisition 37,545,000      
Gross Amounts at Which Carried at Close of Period, Land 8,945,000      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 151,368,000      
Gross Amounts at Which Carried at Close of Period, Total 160,313,000      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (59,838,000)      
West Towne Mall        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Cost, Land 8,912,000      
Initial Cost, Buildings and Improvements 83,084,000      
Costs Capitalized Subsequent to Acquisition 45,963,000      
Gross Amounts at Which Carried at Close of Period, Land 8,912,000      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 129,047,000      
Gross Amounts at Which Carried at Close of Period, Total 137,959,000      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (60,648,000)      
Westgate Mall        
Real Estate And Accumulated Depreciation [Line Items]        
Encumbrances 32,773,000      
Initial Cost, Land 2,149,000      
Initial Cost, Buildings and Improvements 23,257,000      
Costs Capitalized Subsequent to Acquisition 52,425,000      
Sales of Outparcel Land (432,000)      
Gross Amounts at Which Carried at Close of Period, Land 1,742,000      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 75,657,000      
Gross Amounts at Which Carried at Close of Period, Total 77,399,000      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (44,807,000)      
Westmoreland Mall        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Cost, Land 4,621,000      
Initial Cost, Buildings and Improvements 84,215,000      
Costs Capitalized Subsequent to Acquisition 31,230,000      
Sales of Outparcel Land (1,240,000)      
Gross Amounts at Which Carried at Close of Period, Land 3,381,000      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 115,445,000      
Gross Amounts at Which Carried at Close of Period, Total 118,826,000      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (50,588,000)      
York Galleria        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Cost, Land 5,757,000      
Initial Cost, Buildings and Improvements 63,316,000      
Costs Capitalized Subsequent to Acquisition 20,401,000      
Gross Amounts at Which Carried at Close of Period, Land 5,757,000      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 83,717,000      
Gross Amounts at Which Carried at Close of Period, Total 89,474,000      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (41,032,000)      
A840 Greenbrier Circle        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Cost, Land 2,096,000      
Initial Cost, Buildings and Improvements 3,091,000      
Costs Capitalized Subsequent to Acquisition 986,000      
Gross Amounts at Which Carried at Close of Period, Land 2,096,000      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 4,077,000      
Gross Amounts at Which Carried at Close of Period, Total 6,173,000      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (1,612,000)      
Annex At Monroeville Mall        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Cost, Buildings and Improvements 29,496,000      
Costs Capitalized Subsequent to Acquisition 631,000      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 30,127,000      
Gross Amounts at Which Carried at Close of Period, Total 30,127,000      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (11,367,000)      
Cbl Center        
Real Estate And Accumulated Depreciation [Line Items]        
Encumbrances 17,001,000      
Initial Cost, Land 1,332,000      
Initial Cost, Buildings and Improvements 24,675,000      
Costs Capitalized Subsequent to Acquisition 1,330,000      
Gross Amounts at Which Carried at Close of Period, Land 1,864,000      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 25,473,000      
Gross Amounts at Which Carried at Close of Period, Total 27,337,000      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (15,582,000)      
Cbl Center Ii        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Cost, Land 22,000      
Initial Cost, Buildings and Improvements 13,648,000      
Costs Capitalized Subsequent to Acquisition 1,042,000      
Gross Amounts at Which Carried at Close of Period, Land 358,000      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 14,354,000      
Gross Amounts at Which Carried at Close of Period, Total 14,712,000      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (5,150,000)      
Cool Springs Crossing        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Cost, Land 2,803,000      
Initial Cost, Buildings and Improvements 14,985,000      
Costs Capitalized Subsequent to Acquisition 5,935,000      
Gross Amounts at Which Carried at Close of Period, Land 3,554,000      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 20,169,000      
Gross Amounts at Which Carried at Close of Period, Total 23,723,000      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (14,554,000)      
Courtyard At Hickory Hollow        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Cost, Land 3,314,000      
Initial Cost, Buildings and Improvements 2,771,000      
Costs Capitalized Subsequent to Acquisition 472,000      
Sales of Outparcel Land (231,000)      
Gross Amounts at Which Carried at Close of Period, Land 1,500,000      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 4,826,000      
Gross Amounts at Which Carried at Close of Period, Total 6,326,000      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (1,705,000)      
Frontier Square        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Cost, Land 346,000      
Initial Cost, Buildings and Improvements 684,000      
Costs Capitalized Subsequent to Acquisition 439,000      
Sales of Outparcel Land (86,000)      
Gross Amounts at Which Carried at Close of Period, Land 260,000      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 1,123,000      
Gross Amounts at Which Carried at Close of Period, Total 1,383,000      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (823,000)      
Gunbarrel Pointe        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Cost, Land 4,170,000      
Initial Cost, Buildings and Improvements 10,874,000      
Costs Capitalized Subsequent to Acquisition 3,650,000      
Gross Amounts at Which Carried at Close of Period, Land 4,170,000      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 14,524,000      
Gross Amounts at Which Carried at Close of Period, Total 18,694,000      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (7,064,000)      
Hamilton Corner        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Cost, Land 630,000      
Initial Cost, Buildings and Improvements 5,532,000      
Costs Capitalized Subsequent to Acquisition 8,587,000      
Gross Amounts at Which Carried at Close of Period, Land 734,000      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 14,015,000      
Gross Amounts at Which Carried at Close of Period, Total 14,749,000      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (8,338,000)      
Hamilton Crossing        
Real Estate And Accumulated Depreciation [Line Items]        
Encumbrances 8,522,000      
Initial Cost, Land 4,014,000      
Initial Cost, Buildings and Improvements 5,906,000      
Costs Capitalized Subsequent to Acquisition 6,994,000      
Sales of Outparcel Land (1,370,000)      
Gross Amounts at Which Carried at Close of Period, Land 2,644,000      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 12,900,000      
Gross Amounts at Which Carried at Close of Period, Total 15,544,000      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (7,999,000)      
Harford Annex        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Cost, Land 2,854,000      
Initial Cost, Buildings and Improvements 9,718,000      
Costs Capitalized Subsequent to Acquisition 1,464,000      
Gross Amounts at Which Carried at Close of Period, Land 2,854,000      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 11,182,000      
Gross Amounts at Which Carried at Close of Period, Total 14,036,000      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (4,711,000)      
Landing At Arbor Place        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Cost, Land 7,238,000      
Initial Cost, Buildings and Improvements 14,330,000      
Costs Capitalized Subsequent to Acquisition 3,338,000      
Sales of Outparcel Land (2,242,000)      
Gross Amounts at Which Carried at Close of Period, Land 4,996,000      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 17,668,000      
Gross Amounts at Which Carried at Close of Period, Total 22,664,000      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (11,148,000)      
Layton Convenience Ctr        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Cost, Buildings and Improvements 8,000      
Costs Capitalized Subsequent to Acquisition 5,892,000      
Gross Amounts at Which Carried at Close of Period, Land 2,795,000      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 3,105,000      
Gross Amounts at Which Carried at Close of Period, Total 5,900,000      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (1,896,000)      
Layton Hills Plaza        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Cost, Buildings and Improvements 2,000      
Costs Capitalized Subsequent to Acquisition 1,009,000      
Gross Amounts at Which Carried at Close of Period, Land 673,000      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 338,000      
Gross Amounts at Which Carried at Close of Period, Total 1,011,000      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (255,000)      
Parkdale Crossing        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Cost, Land 2,994,000      
Initial Cost, Buildings and Improvements 7,408,000      
Costs Capitalized Subsequent to Acquisition 2,485,000      
Sales of Outparcel Land (355,000)      
Gross Amounts at Which Carried at Close of Period, Land 2,639,000      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 9,893,000      
Gross Amounts at Which Carried at Close of Period, Total 12,532,000      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (4,190,000)      
Pearland Office        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Cost, Buildings and Improvements 7,849,000      
Costs Capitalized Subsequent to Acquisition 2,758,000      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 10,607,000      
Gross Amounts at Which Carried at Close of Period, Total 10,607,000      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (4,226,000)      
Pearland Residential Mgmt        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Cost, Buildings and Improvements 9,666,000      
Costs Capitalized Subsequent to Acquisition 9,000      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 9,675,000      
Gross Amounts at Which Carried at Close of Period, Total 9,675,000      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (3,065,000)      
Plaza At Fayette Mall        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Cost, Land 9,531,000      
Initial Cost, Buildings and Improvements 27,646,000      
Costs Capitalized Subsequent to Acquisition 1,187,000      
Gross Amounts at Which Carried at Close of Period, Land 9,531,000      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 28,833,000      
Gross Amounts at Which Carried at Close of Period, Total 38,364,000      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (10,428,000)      
The Promenade at D'Iberville        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Cost, Land 16,278,000      
Initial Cost, Buildings and Improvements 48,806,000      
Costs Capitalized Subsequent to Acquisition 25,381,000      
Sales of Outparcel Land (706,000)      
Gross Amounts at Which Carried at Close of Period, Land 17,953,000      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 71,806,000      
Gross Amounts at Which Carried at Close of Period, Total 89,759,000      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (23,912,000)      
Shoppes At Hamilton Place        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Cost, Land 4,894,000      
Initial Cost, Buildings and Improvements 11,700,000      
Costs Capitalized Subsequent to Acquisition 2,251,000      
Gross Amounts at Which Carried at Close of Period, Land 2,811,000      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 16,034,000      
Gross Amounts at Which Carried at Close of Period, Total 18,845,000      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (5,672,000)      
Shoppes At St Clair        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Cost, Land 8,250,000      
Initial Cost, Buildings and Improvements 23,623,000      
Costs Capitalized Subsequent to Acquisition 153,000      
Sales of Outparcel Land (5,044,000)      
Gross Amounts at Which Carried at Close of Period, Land 3,206,000      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 23,776,000      
Gross Amounts at Which Carried at Close of Period, Total 26,982,000      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (11,111,000)      
Sunrise Commons        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Cost, Land 1,013,000      
Initial Cost, Buildings and Improvements 7,525,000      
Costs Capitalized Subsequent to Acquisition 2,520,000      
Gross Amounts at Which Carried at Close of Period, Land 1,013,000      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 10,045,000      
Gross Amounts at Which Carried at Close of Period, Total 11,058,000      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (4,658,000)      
The Terrace        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Cost, Land 4,166,000      
Initial Cost, Buildings and Improvements 9,929,000      
Costs Capitalized Subsequent to Acquisition 7,991,000      
Gross Amounts at Which Carried at Close of Period, Land 6,536,000      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 15,550,000      
Gross Amounts at Which Carried at Close of Period, Total 22,086,000      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (7,454,000)      
West Towne Crossing        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Cost, Land 1,784,000      
Initial Cost, Buildings and Improvements 2,955,000      
Costs Capitalized Subsequent to Acquisition 12,095,000      
Gross Amounts at Which Carried at Close of Period, Land 2,759,000      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 14,075,000      
Gross Amounts at Which Carried at Close of Period, Total 16,834,000      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (5,810,000)      
Westgate Crossing        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Cost, Land 1,082,000      
Initial Cost, Buildings and Improvements 3,422,000      
Costs Capitalized Subsequent to Acquisition 8,274,000      
Gross Amounts at Which Carried at Close of Period, Land 1,082,000      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 11,696,000      
Gross Amounts at Which Carried at Close of Period, Total 12,778,000      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (6,126,000)      
Westmoreland South        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Cost, Land 2,898,000      
Initial Cost, Buildings and Improvements 21,167,000      
Costs Capitalized Subsequent to Acquisition 9,267,000      
Gross Amounts at Which Carried at Close of Period, Land 2,898,000      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 30,434,000      
Gross Amounts at Which Carried at Close of Period, Total 33,332,000      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (13,246,000)      
Acadiana Mall        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Cost, Land 25,083,000      
Initial Cost, Buildings and Improvements 145,769,000      
Costs Capitalized Subsequent to Acquisition (170,852,000)      
Cary Towne Center        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Cost, Land 23,688,000      
Initial Cost, Buildings and Improvements 74,432,000      
Costs Capitalized Subsequent to Acquisition (98,120,000)      
Honey Creek Mall        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Cost, Land 3,108,000      
Initial Cost, Buildings and Improvements 83,358,000      
Costs Capitalized Subsequent to Acquisition (86,466,000)      
Outlet Shoppes At El Paso        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Cost, Land 7,345,000      
Initial Cost, Buildings and Improvements 98,602,000      
Costs Capitalized Subsequent to Acquisition (105,947,000)      
A850 Greenbriar Circle        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Cost, Land 3,154,000      
Initial Cost, Buildings and Improvements 6,881,000      
Costs Capitalized Subsequent to Acquisition (10,035,000)      
Madison Grandview Forum, LLC        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Cost, Land 9,234,000      
Initial Cost, Buildings and Improvements 17,285,000      
Costs Capitalized Subsequent to Acquisition (25,588,000)      
Sales of Outparcel Land (931,000)      
Pearland Hotel        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Cost, Buildings and Improvements 16,149,000      
Costs Capitalized Subsequent to Acquisition (16,149,000)      
Atlanta Outlet JV, LLC        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Cost, Land 8,598,000      
Initial Cost, Buildings and Improvements 100,613,000      
Costs Capitalized Subsequent to Acquisition (108,471,000)      
Sales of Outparcel Land (740,000)      
Outlet Shoppesofthe Bluegrass        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Cost, Land 3,193,000      
Initial Cost, Buildings and Improvements 72,962,000      
Costs Capitalized Subsequent to Acquisition (76,155,000)      
Other Land        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Cost, Land 19,248,000      
Initial Cost, Buildings and Improvements 4,002,000      
Costs Capitalized Subsequent to Acquisition (3,930,000)      
Gross Amounts at Which Carried at Close of Period, Land 17,958,000      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 1,362,000      
Gross Amounts at Which Carried at Close of Period, Total 19,320,000      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (29,000)      
Development In Progress Consisting Of Construction And Development Properties        
Real Estate And Accumulated Depreciation [Line Items]        
Costs Capitalized Subsequent to Acquisition 49,351,000      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 49,351,000      
Gross Amounts at Which Carried at Close of Period, Total $ 49,351,000