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Schedule III - REAL ESTATE ASSETS AND ACCUMULATED DEPRECIATION (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2013
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances $ 1,908,027      
Initial Cost, Land 837,065      
Initial Cost, Buildings and Improvements 5,390,463      
Costs Capitalized Subsequent to Acquisition 1,431,979      
Sales of Outparcel Land (37,577)      
Gross Amounts at Which Carried at Close of Period, Land 813,390      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 6,808,540      
Gross Amounts at Which Carried at Close of Period, Total 7,621,930 $ 7,947,647 $ 8,240,521 $ 8,187,183
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (2,465,095) $ (2,427,108) $ (2,382,568) $ (2,240,007)
Land and buildings and improvements, gross $ 7,721,000      
Buildings        
Real Estate and Accumulated Depreciation [Line Items]        
Estimated useful life 40 years      
Certain Improvements | Minimum        
Real Estate and Accumulated Depreciation [Line Items]        
Estimated useful life 10 years      
Certain Improvements | Maximum        
Real Estate and Accumulated Depreciation [Line Items]        
Estimated useful life 20 years      
Equipment and Fixtures | Minimum        
Real Estate and Accumulated Depreciation [Line Items]        
Estimated useful life 7 years      
Equipment and Fixtures | Maximum        
Real Estate and Accumulated Depreciation [Line Items]        
Estimated useful life 10 years      
Acadiana Mall, Lafayette, LA        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances $ 122,435      
Initial Cost, Land 22,511      
Initial Cost, Buildings and Improvements 145,769      
Costs Capitalized Subsequent to Acquisition (101,239)      
Sales of Outparcel Land 0      
Gross Amounts at Which Carried at Close of Period, Land 5,722      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 61,319      
Gross Amounts at Which Carried at Close of Period, Total 67,041      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (1,763)      
Alamance Crossing, Burlington, NC        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances 46,337      
Initial Cost, Land 20,853      
Initial Cost, Buildings and Improvements 63,105      
Costs Capitalized Subsequent to Acquisition 39,634      
Sales of Outparcel Land (2,803)      
Gross Amounts at Which Carried at Close of Period, Land 18,051      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 102,738      
Gross Amounts at Which Carried at Close of Period, Total 120,789      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (33,958)      
Arbor Place, Atlanta (Douglasville), GA        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances 111,448      
Initial Cost, Land 7,862      
Initial Cost, Buildings and Improvements 95,330      
Costs Capitalized Subsequent to Acquisition 28,164      
Sales of Outparcel Land 0      
Gross Amounts at Which Carried at Close of Period, Land 7,862      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 123,494      
Gross Amounts at Which Carried at Close of Period, Total 131,356      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (65,818)      
Asheville Mall, Asheville, NC        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances 68,008      
Initial Cost, Land 7,139      
Initial Cost, Buildings and Improvements 58,747      
Costs Capitalized Subsequent to Acquisition 65,419      
Sales of Outparcel Land (805)      
Gross Amounts at Which Carried at Close of Period, Land 6,334      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 124,166      
Gross Amounts at Which Carried at Close of Period, Total 130,500      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (54,990)      
Brookfield Square, Brookfield, WI        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances 0      
Initial Cost, Land 8,996      
Initial Cost, Buildings and Improvements 84,250      
Costs Capitalized Subsequent to Acquisition 77,878      
Sales of Outparcel Land (18)      
Gross Amounts at Which Carried at Close of Period, Land 25,392      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 145,714      
Gross Amounts at Which Carried at Close of Period, Total 171,106      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (70,871)      
Burnsville Center, Burnsville, MN        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances 69,615      
Initial Cost, Land 12,804      
Initial Cost, Buildings and Improvements 71,355      
Costs Capitalized Subsequent to Acquisition 59,357      
Sales of Outparcel Land (1,157)      
Gross Amounts at Which Carried at Close of Period, Land 16,102      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 126,257      
Gross Amounts at Which Carried at Close of Period, Total 142,359      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (61,024)      
Cary Towne Center, Cary, NC        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances 46,716      
Initial Cost, Land 23,688      
Initial Cost, Buildings and Improvements 74,432      
Costs Capitalized Subsequent to Acquisition 31,752      
Sales of Outparcel Land 0      
Gross Amounts at Which Carried at Close of Period, Land 25,901      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 103,971      
Gross Amounts at Which Carried at Close of Period, Total 129,872      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (44,007)      
CherryVale Mall, Rockford, IL        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances 0      
Initial Cost, Land 11,892      
Initial Cost, Buildings and Improvements 63,973      
Costs Capitalized Subsequent to Acquisition 58,028      
Sales of Outparcel Land (1,667)      
Gross Amounts at Which Carried at Close of Period, Land 11,608      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 120,618      
Gross Amounts at Which Carried at Close of Period, Total 132,226      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (51,651)      
Cross Creek Mall, Fayetteville, NC        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances 119,545      
Initial Cost, Land 19,155      
Initial Cost, Buildings and Improvements 104,353      
Costs Capitalized Subsequent to Acquisition 49,457      
Sales of Outparcel Land 0      
Gross Amounts at Which Carried at Close of Period, Land 31,539      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 141,426      
Gross Amounts at Which Carried at Close of Period, Total 172,965      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (54,965)      
Dakota Square Mall, Minot, ND        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances 0      
Initial Cost, Land 4,552      
Initial Cost, Buildings and Improvements 87,625      
Costs Capitalized Subsequent to Acquisition 25,872      
Sales of Outparcel Land 0      
Gross Amounts at Which Carried at Close of Period, Land 4,552      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 113,497      
Gross Amounts at Which Carried at Close of Period, Total 118,049      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (20,032)      
East Towne Mall, Madison, WI        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances 0      
Initial Cost, Land 4,496      
Initial Cost, Buildings and Improvements 63,867      
Costs Capitalized Subsequent to Acquisition 62,471      
Sales of Outparcel Land (715)      
Gross Amounts at Which Carried at Close of Period, Land 3,781      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 126,338      
Gross Amounts at Which Carried at Close of Period, Total 130,119      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (49,240)      
EastGate Mall, Cincinnati, OH        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances 35,635      
Initial Cost, Land 13,046      
Initial Cost, Buildings and Improvements 44,949      
Costs Capitalized Subsequent to Acquisition 33,616      
Sales of Outparcel Land (1,017)      
Gross Amounts at Which Carried at Close of Period, Land 16,827      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 73,767      
Gross Amounts at Which Carried at Close of Period, Total 90,594      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (29,692)      
Eastland Mall, Bloomington, IL        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances 0      
Initial Cost, Land 5,746      
Initial Cost, Buildings and Improvements 75,893      
Costs Capitalized Subsequent to Acquisition 7,864      
Sales of Outparcel Land (753)      
Gross Amounts at Which Carried at Close of Period, Land 6,002      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 82,748      
Gross Amounts at Which Carried at Close of Period, Total 88,750      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (32,671)      
Fayette Mall, Lexington, KY        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances 157,387      
Initial Cost, Land 25,205      
Initial Cost, Buildings and Improvements 84,256      
Costs Capitalized Subsequent to Acquisition 105,684      
Sales of Outparcel Land 0      
Gross Amounts at Which Carried at Close of Period, Land 25,205      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 189,940      
Gross Amounts at Which Carried at Close of Period, Total 215,145      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (61,756)      
Frontier Mall, Cheyenne, WY        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances 0      
Initial Cost, Land 2,681      
Initial Cost, Buildings and Improvements 15,858      
Costs Capitalized Subsequent to Acquisition 20,973      
Sales of Outparcel Land (80)      
Gross Amounts at Which Carried at Close of Period, Land 2,601      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 36,831      
Gross Amounts at Which Carried at Close of Period, Total 39,432      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (24,019)      
Greenbrier Mall, Chesapeake, VA        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances 70,801      
Initial Cost, Land 3,181      
Initial Cost, Buildings and Improvements 107,355      
Costs Capitalized Subsequent to Acquisition 17,147      
Sales of Outparcel Land (626)      
Gross Amounts at Which Carried at Close of Period, Land 2,555      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 124,502      
Gross Amounts at Which Carried at Close of Period, Total 127,057      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (44,067)      
Hamilton Place, Chattanooga, TN        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances 104,317      
Initial Cost, Land 3,532      
Initial Cost, Buildings and Improvements 42,623      
Costs Capitalized Subsequent to Acquisition 61,473      
Sales of Outparcel Land (441)      
Gross Amounts at Which Carried at Close of Period, Land 8,484      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 98,703      
Gross Amounts at Which Carried at Close of Period, Total 107,187      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (55,322)      
Hanes Mall, Winston-Salem, NC        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances 0      
Initial Cost, Land 17,176      
Initial Cost, Buildings and Improvements 133,376      
Costs Capitalized Subsequent to Acquisition 56,679      
Sales of Outparcel Land (948)      
Gross Amounts at Which Carried at Close of Period, Land 18,629      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 187,654      
Gross Amounts at Which Carried at Close of Period, Total 206,283      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (79,178)      
Harford Mall, Bel Air, MD        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances 0      
Initial Cost, Land 8,699      
Initial Cost, Buildings and Improvements 45,704      
Costs Capitalized Subsequent to Acquisition 22,887      
Sales of Outparcel Land 0      
Gross Amounts at Which Carried at Close of Period, Land 8,699      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 68,591      
Gross Amounts at Which Carried at Close of Period, Total 77,290      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (28,104)      
Hickory Point Mall, Forsyth, IL        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances 27,446      
Initial Cost, Land 10,731      
Initial Cost, Buildings and Improvements 31,728      
Costs Capitalized Subsequent to Acquisition (24,207)      
Sales of Outparcel Land (293)      
Gross Amounts at Which Carried at Close of Period, Land 4,336      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 13,623      
Gross Amounts at Which Carried at Close of Period, Total 17,959      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (842)      
Honey Creek Mall, Terre Haute, IN        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances 25,417      
Initial Cost, Land 3,108      
Initial Cost, Buildings and Improvements 83,358      
Costs Capitalized Subsequent to Acquisition 19,563      
Sales of Outparcel Land 0      
Gross Amounts at Which Carried at Close of Period, Land 3,108      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 102,921      
Gross Amounts at Which Carried at Close of Period, Total 106,029      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (38,411)      
Imperial Valley Mall, El Centro, CA        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances 0      
Initial Cost, Land 35,378      
Initial Cost, Buildings and Improvements 70,549      
Costs Capitalized Subsequent to Acquisition 3,922      
Sales of Outparcel Land 0      
Gross Amounts at Which Carried at Close of Period, Land 35,378      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 74,471      
Gross Amounts at Which Carried at Close of Period, Total 109,849      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (12,716)      
Janesville Mall, Janesville, WI        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances 0      
Initial Cost, Land 8,074      
Initial Cost, Buildings and Improvements 26,009      
Costs Capitalized Subsequent to Acquisition 22,531      
Sales of Outparcel Land 0      
Gross Amounts at Which Carried at Close of Period, Land 8,074      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 48,540      
Gross Amounts at Which Carried at Close of Period, Total 56,614      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (20,792)      
Jefferson Mall, Louisville, KY        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances 64,747      
Initial Cost, Land 13,125      
Initial Cost, Buildings and Improvements 40,234      
Costs Capitalized Subsequent to Acquisition 40,046      
Sales of Outparcel Land (521)      
Gross Amounts at Which Carried at Close of Period, Land 17,850      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 75,034      
Gross Amounts at Which Carried at Close of Period, Total 92,884      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (31,580)      
Kirkwood Mall, Bismarck, ND        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances 37,295      
Initial Cost, Land 3,368      
Initial Cost, Buildings and Improvements 118,945      
Costs Capitalized Subsequent to Acquisition 24,238      
Sales of Outparcel Land 0      
Gross Amounts at Which Carried at Close of Period, Land 3,368      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 143,183      
Gross Amounts at Which Carried at Close of Period, Total 146,551      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (21,210)      
Laurel Park Place, Livonia, MI        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances 0      
Initial Cost, Land 13,289      
Initial Cost, Buildings and Improvements 92,579      
Costs Capitalized Subsequent to Acquisition 20,671      
Sales of Outparcel Land 0      
Gross Amounts at Which Carried at Close of Period, Land 13,289      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 113,250      
Gross Amounts at Which Carried at Close of Period, Total 126,539      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (47,331)      
Layton Hills Mall, Layton, UT        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances 0      
Initial Cost, Land 20,464      
Initial Cost, Buildings and Improvements 99,836      
Costs Capitalized Subsequent to Acquisition (4,734)      
Sales of Outparcel Land (340)      
Gross Amounts at Which Carried at Close of Period, Land 13,885      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 101,341      
Gross Amounts at Which Carried at Close of Period, Total 115,226      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (34,063)      
Mall del Norte, Laredo, TX        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances 0      
Initial Cost, Land 21,734      
Initial Cost, Buildings and Improvements 142,049      
Costs Capitalized Subsequent to Acquisition 51,295      
Sales of Outparcel Land 0      
Gross Amounts at Which Carried at Close of Period, Land 21,734      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 193,344      
Gross Amounts at Which Carried at Close of Period, Total 215,078      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (83,039)      
Mayfaire Town Center, Wilmington, NC        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances 0      
Initial Cost, Land 26,333      
Initial Cost, Buildings and Improvements 101,087      
Costs Capitalized Subsequent to Acquisition 15,712      
Sales of Outparcel Land 0      
Gross Amounts at Which Carried at Close of Period, Land 26,333      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 116,799      
Gross Amounts at Which Carried at Close of Period, Total 143,132      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (8,592)      
Meridian Mall, Lansing, MI        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances 0      
Initial Cost, Land 529      
Initial Cost, Buildings and Improvements 103,678      
Costs Capitalized Subsequent to Acquisition 80,804      
Sales of Outparcel Land 0      
Gross Amounts at Which Carried at Close of Period, Land 2,232      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 182,779      
Gross Amounts at Which Carried at Close of Period, Total 185,011      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (88,679)      
Mid Rivers Mall, St. Peters, MO        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances 0      
Initial Cost, Land 16,384      
Initial Cost, Buildings and Improvements 170,582      
Costs Capitalized Subsequent to Acquisition 16,465      
Sales of Outparcel Land (2,050)      
Gross Amounts at Which Carried at Close of Period, Land 14,334      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 187,047      
Gross Amounts at Which Carried at Close of Period, Total 201,381      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (60,034)      
Monroeville Mall, Pittsburgh, PA        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances 0      
Initial Cost, Land 22,911      
Initial Cost, Buildings and Improvements 177,214      
Costs Capitalized Subsequent to Acquisition 79,105      
Sales of Outparcel Land 0      
Gross Amounts at Which Carried at Close of Period, Land 25,432      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 253,798      
Gross Amounts at Which Carried at Close of Period, Total 279,230      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (87,876)      
Northgate Mall, Chattanooga, TN        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances 0      
Initial Cost, Land 2,330      
Initial Cost, Buildings and Improvements 8,960      
Costs Capitalized Subsequent to Acquisition 26,245      
Sales of Outparcel Land (123)      
Gross Amounts at Which Carried at Close of Period, Land 3,274      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 34,138      
Gross Amounts at Which Carried at Close of Period, Total 37,412      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (9,922)      
Northpark Mall, Joplin, MO        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances 0      
Initial Cost, Land 9,977      
Initial Cost, Buildings and Improvements 65,481      
Costs Capitalized Subsequent to Acquisition 48,398      
Sales of Outparcel Land 0      
Gross Amounts at Which Carried at Close of Period, Land 10,962      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 112,894      
Gross Amounts at Which Carried at Close of Period, Total 123,856      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (45,028)      
Northwoods Mall, North Charleston, SC        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances 66,544      
Initial Cost, Land 14,867      
Initial Cost, Buildings and Improvements 49,647      
Costs Capitalized Subsequent to Acquisition 24,754      
Sales of Outparcel Land (2,339)      
Gross Amounts at Which Carried at Close of Period, Land 12,528      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 74,401      
Gross Amounts at Which Carried at Close of Period, Total 86,929      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (31,154)      
Old Hickory Mall, Jackson, TN        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances 0      
Initial Cost, Land 15,527      
Initial Cost, Buildings and Improvements 29,413      
Costs Capitalized Subsequent to Acquisition 8,845      
Sales of Outparcel Land 0      
Gross Amounts at Which Carried at Close of Period, Land 15,531      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 38,254      
Gross Amounts at Which Carried at Close of Period, Total 53,785      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (16,976)      
The Outlet Shoppes at Atlanta, Woodstock, GA        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances 79,407      
Initial Cost, Land 8,598      
Initial Cost, Buildings and Improvements 100,613      
Costs Capitalized Subsequent to Acquisition (37,409)      
Sales of Outparcel Land (740)      
Gross Amounts at Which Carried at Close of Period, Land 7,858      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 63,204      
Gross Amounts at Which Carried at Close of Period, Total 71,062      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (16,251)      
The Outlet Shoppes at El Paso, El Paso, TX        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances 6,613      
Initial Cost, Land 7,345      
Initial Cost, Buildings and Improvements 98,602      
Costs Capitalized Subsequent to Acquisition 10,852      
Sales of Outparcel Land 0      
Gross Amounts at Which Carried at Close of Period, Land 7,569      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 109,230      
Gross Amounts at Which Carried at Close of Period, Total 116,799      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (20,419)      
The Outlet Shoppes at Gettysburg, Gettysburg, PA        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances 38,354      
Initial Cost, Land 20,779      
Initial Cost, Buildings and Improvements 22,180      
Costs Capitalized Subsequent to Acquisition 1,863      
Sales of Outparcel Land 0      
Gross Amounts at Which Carried at Close of Period, Land 20,778      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 24,044      
Gross Amounts at Which Carried at Close of Period, Total 44,822      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (5,477)      
The Outlet Shoppes at Laredo, Laredo, TX        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances 80,145      
Initial Cost, Land 11,000      
Initial Cost, Buildings and Improvements 97,711      
Costs Capitalized Subsequent to Acquisition 0      
Sales of Outparcel Land 0      
Gross Amounts at Which Carried at Close of Period, Land 11,000      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 97,711      
Gross Amounts at Which Carried at Close of Period, Total 108,711      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (3,285)      
The Outlet Shoppes of the Bluegrass, Simpsonville, KY        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances 82,990      
Initial Cost, Land 3,193      
Initial Cost, Buildings and Improvements 72,962      
Costs Capitalized Subsequent to Acquisition 3,846      
Sales of Outparcel Land 0      
Gross Amounts at Which Carried at Close of Period, Land 3,193      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 76,808      
Gross Amounts at Which Carried at Close of Period, Total 80,001      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (13,970)      
Park Plaza Mall, Little Rock, AR        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances 84,084      
Initial Cost, Land 6,297      
Initial Cost, Buildings and Improvements 81,638      
Costs Capitalized Subsequent to Acquisition 44,837      
Sales of Outparcel Land 0      
Gross Amounts at Which Carried at Close of Period, Land 6,304      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 126,468      
Gross Amounts at Which Carried at Close of Period, Total 132,772      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (51,198)      
Parkdale Mall, Beaumont, TX        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances 81,108      
Initial Cost, Land 23,850      
Initial Cost, Buildings and Improvements 47,390      
Costs Capitalized Subsequent to Acquisition 63,881      
Sales of Outparcel Land (307)      
Gross Amounts at Which Carried at Close of Period, Land 25,333      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 109,481      
Gross Amounts at Which Carried at Close of Period, Total 134,814      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (45,229)      
Parkway Place, Huntsville, AL        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances 35,608      
Initial Cost, Land 6,364      
Initial Cost, Buildings and Improvements 67,067      
Costs Capitalized Subsequent to Acquisition 6,903      
Sales of Outparcel Land 0      
Gross Amounts at Which Carried at Close of Period, Land 6,364      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 73,970      
Gross Amounts at Which Carried at Close of Period, Total 80,334      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (18,384)      
Pearland Town Center, Pearland, TX        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances 0      
Initial Cost, Land 16,300      
Initial Cost, Buildings and Improvements 108,615      
Costs Capitalized Subsequent to Acquisition 20,375      
Sales of Outparcel Land (857)      
Gross Amounts at Which Carried at Close of Period, Land 15,443      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 128,990      
Gross Amounts at Which Carried at Close of Period, Total 144,433      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (42,952)      
Post Oak Mall, College Station, TX        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances 0      
Initial Cost, Land 3,936      
Initial Cost, Buildings and Improvements 48,948      
Costs Capitalized Subsequent to Acquisition 16,680      
Sales of Outparcel Land (327)      
Gross Amounts at Which Carried at Close of Period, Land 3,609      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 65,628      
Gross Amounts at Which Carried at Close of Period, Total 69,237      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (36,072)      
Richland Mall, Waco, TX        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances 0      
Initial Cost, Land 9,874      
Initial Cost, Buildings and Improvements 34,793      
Costs Capitalized Subsequent to Acquisition 20,716      
Sales of Outparcel Land (1,225)      
Gross Amounts at Which Carried at Close of Period, Land 8,662      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 55,496      
Gross Amounts at Which Carried at Close of Period, Total 64,158      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (23,072)      
South County Center, St. Louis, MO        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances 0      
Initial Cost, Land 15,754      
Initial Cost, Buildings and Improvements 159,249      
Costs Capitalized Subsequent to Acquisition 15,830      
Sales of Outparcel Land 0      
Gross Amounts at Which Carried at Close of Period, Land 15,754      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 175,079      
Gross Amounts at Which Carried at Close of Period, Total 190,833      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (52,942)      
Southaven Towne Center, Southaven, MS        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances 0      
Initial Cost, Land 8,255      
Initial Cost, Buildings and Improvements 29,380      
Costs Capitalized Subsequent to Acquisition 7,434      
Sales of Outparcel Land 0      
Gross Amounts at Which Carried at Close of Period, Land 8,896      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 36,173      
Gross Amounts at Which Carried at Close of Period, Total 45,069      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (13,336)      
Southpark Mall, Colonial Heights, VA        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances 61,036      
Initial Cost, Land 9,501      
Initial Cost, Buildings and Improvements 73,262      
Costs Capitalized Subsequent to Acquisition 38,039      
Sales of Outparcel Land 0      
Gross Amounts at Which Carried at Close of Period, Land 11,282      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 109,520      
Gross Amounts at Which Carried at Close of Period, Total 120,802      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (43,696)      
St. Clair Square, Fairview Heights, IL        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances 0      
Initial Cost, Land 11,027      
Initial Cost, Buildings and Improvements 75,620      
Costs Capitalized Subsequent to Acquisition 35,962      
Sales of Outparcel Land 0      
Gross Amounts at Which Carried at Close of Period, Land 11,027      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 111,582      
Gross Amounts at Which Carried at Close of Period, Total 122,609      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (55,751)      
Stroud Mall, Stroudsburg, PA        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances 0      
Initial Cost, Land 14,711      
Initial Cost, Buildings and Improvements 23,936      
Costs Capitalized Subsequent to Acquisition 23,007      
Sales of Outparcel Land 0      
Gross Amounts at Which Carried at Close of Period, Land 14,711      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 46,943      
Gross Amounts at Which Carried at Close of Period, Total 61,654      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (19,792)      
Sunrise Mall, Brownsville, TX        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances 0      
Initial Cost, Land 11,156      
Initial Cost, Buildings and Improvements 59,047      
Costs Capitalized Subsequent to Acquisition 16,752      
Sales of Outparcel Land 0      
Gross Amounts at Which Carried at Close of Period, Land 11,156      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 75,799      
Gross Amounts at Which Carried at Close of Period, Total 86,955      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (26,322)      
Turtle Creek Mall, Hattiesburg, MS        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances 0      
Initial Cost, Land 2,345      
Initial Cost, Buildings and Improvements 26,418      
Costs Capitalized Subsequent to Acquisition 20,509      
Sales of Outparcel Land 0      
Gross Amounts at Which Carried at Close of Period, Land 3,535      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 45,737      
Gross Amounts at Which Carried at Close of Period, Total 49,272      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (25,218)      
Valley View Mall, Roanoke, VA        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances 55,107      
Initial Cost, Land 15,985      
Initial Cost, Buildings and Improvements 77,771      
Costs Capitalized Subsequent to Acquisition 23,706      
Sales of Outparcel Land 0      
Gross Amounts at Which Carried at Close of Period, Land 15,999      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 101,463      
Gross Amounts at Which Carried at Close of Period, Total 117,462      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (38,647)      
Volusia Mall, Daytona Beach, FL        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances 43,722      
Initial Cost, Land 2,526      
Initial Cost, Buildings and Improvements 120,242      
Costs Capitalized Subsequent to Acquisition 31,492      
Sales of Outparcel Land 0      
Gross Amounts at Which Carried at Close of Period, Land 8,945      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 145,315      
Gross Amounts at Which Carried at Close of Period, Total 154,260      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (50,781)      
West Towne Mall, Madison, WI        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances 0      
Initial Cost, Land 9,545      
Initial Cost, Buildings and Improvements 83,084      
Costs Capitalized Subsequent to Acquisition 50,229      
Sales of Outparcel Land 0      
Gross Amounts at Which Carried at Close of Period, Land 9,545      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 133,313      
Gross Amounts at Which Carried at Close of Period, Total 142,858      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (54,298)      
WestGate Mall, Spartanburg, SC        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances 34,991      
Initial Cost, Land 2,149      
Initial Cost, Buildings and Improvements 23,257      
Costs Capitalized Subsequent to Acquisition 51,917      
Sales of Outparcel Land (432)      
Gross Amounts at Which Carried at Close of Period, Land 1,742      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 75,149      
Gross Amounts at Which Carried at Close of Period, Total 76,891      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (40,075)      
Westmoreland Mall, Greensburg, PA        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances 0      
Initial Cost, Land 4,621      
Initial Cost, Buildings and Improvements 84,215      
Costs Capitalized Subsequent to Acquisition 28,744      
Sales of Outparcel Land (397)      
Gross Amounts at Which Carried at Close of Period, Land 4,224      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 112,959      
Gross Amounts at Which Carried at Close of Period, Total 117,183      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (44,138)      
York Galleria, York, PA        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances 0      
Initial Cost, Land 5,757      
Initial Cost, Buildings and Improvements 63,316      
Costs Capitalized Subsequent to Acquisition 18,065      
Sales of Outparcel Land 0      
Gross Amounts at Which Carried at Close of Period, Land 5,757      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 81,381      
Gross Amounts at Which Carried at Close of Period, Total 87,138      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (35,236)      
840 Greenbrier Circle, Chesapeake, VA        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances 0      
Initial Cost, Land 2,096      
Initial Cost, Buildings and Improvements 3,091      
Costs Capitalized Subsequent to Acquisition 379      
Sales of Outparcel Land 0      
Gross Amounts at Which Carried at Close of Period, Land 2,096      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 3,470      
Gross Amounts at Which Carried at Close of Period, Total 5,566      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (1,357)      
850 Greenbrier Circle, Chesapeake, VA        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances 0      
Initial Cost, Land 3,154      
Initial Cost, Buildings and Improvements 6,881      
Costs Capitalized Subsequent to Acquisition (289)      
Sales of Outparcel Land 0      
Gross Amounts at Which Carried at Close of Period, Land 3,154      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 6,592      
Gross Amounts at Which Carried at Close of Period, Total 9,746      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (1,985)      
Annex at Monroeville, Pittsburgh, PA        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances 0      
Initial Cost, Land 0      
Initial Cost, Buildings and Improvements 29,496      
Costs Capitalized Subsequent to Acquisition 321      
Sales of Outparcel Land 0      
Gross Amounts at Which Carried at Close of Period, Land 0      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 29,817      
Gross Amounts at Which Carried at Close of Period, Total 29,817      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (9,971)      
CBL Center, Chattanooga, TN        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances 18,522      
Initial Cost, Land 140      
Initial Cost, Buildings and Improvements 24,675      
Costs Capitalized Subsequent to Acquisition 1,982      
Sales of Outparcel Land 0      
Gross Amounts at Which Carried at Close of Period, Land 1,864      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 24,933      
Gross Amounts at Which Carried at Close of Period, Total 26,797      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (14,569)      
CBL Center II, Chattanooga, TN        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances 0      
Initial Cost, Land 0      
Initial Cost, Buildings and Improvements 13,648      
Costs Capitalized Subsequent to Acquisition 1,759      
Sales of Outparcel Land 0      
Gross Amounts at Which Carried at Close of Period, Land 358      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 15,049      
Gross Amounts at Which Carried at Close of Period, Total 15,407      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (5,134)      
CoolSprings Crossing, Nashville, TN        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances 0      
Initial Cost, Land 2,803      
Initial Cost, Buildings and Improvements 14,985      
Costs Capitalized Subsequent to Acquisition 5,830      
Sales of Outparcel Land 0      
Gross Amounts at Which Carried at Close of Period, Land 3,554      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 20,064      
Gross Amounts at Which Carried at Close of Period, Total 23,618      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (13,122)      
Courtyard at Hickory Hollow, Nashville, TN        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances 0      
Initial Cost, Land 3,314      
Initial Cost, Buildings and Improvements 2,771      
Costs Capitalized Subsequent to Acquisition (1,603)      
Sales of Outparcel Land (231)      
Gross Amounts at Which Carried at Close of Period, Land 1,500      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 2,751      
Gross Amounts at Which Carried at Close of Period, Total 4,251      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (983)      
The Forum at Grandview, Madison, MS        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances 0      
Initial Cost, Land 9,234      
Initial Cost, Buildings and Improvements 17,285      
Costs Capitalized Subsequent to Acquisition 21,323      
Sales of Outparcel Land (684)      
Gross Amounts at Which Carried at Close of Period, Land 8,652      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 38,506      
Gross Amounts at Which Carried at Close of Period, Total 47,158      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (5,862)      
Frontier Square, Cheyenne, WY        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances 0      
Initial Cost, Land 346      
Initial Cost, Buildings and Improvements 684      
Costs Capitalized Subsequent to Acquisition 434      
Sales of Outparcel Land (86)      
Gross Amounts at Which Carried at Close of Period, Land 260      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 1,118      
Gross Amounts at Which Carried at Close of Period, Total 1,378      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (729)      
Gulf Coast Town Center, Ft. Myers, FL        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances 0      
Initial Cost, Land 628      
Initial Cost, Buildings and Improvements 6,835      
Costs Capitalized Subsequent to Acquisition 0      
Sales of Outparcel Land 0      
Gross Amounts at Which Carried at Close of Period, Land 628      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 6,835      
Gross Amounts at Which Carried at Close of Period, Total 7,463      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation 0      
Gunbarrel Pointe, Chattanooga, TN        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances 0      
Initial Cost, Land 4,170      
Initial Cost, Buildings and Improvements 10,874      
Costs Capitalized Subsequent to Acquisition 3,748      
Sales of Outparcel Land 0      
Gross Amounts at Which Carried at Close of Period, Land 4,170      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 14,622      
Gross Amounts at Which Carried at Close of Period, Total 18,792      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (6,362)      
Hamilton Corner, Chattanooga, TN        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances 0      
Initial Cost, Land 630      
Initial Cost, Buildings and Improvements 5,532      
Costs Capitalized Subsequent to Acquisition 8,179      
Sales of Outparcel Land      
Gross Amounts at Which Carried at Close of Period, Land 734      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 13,607      
Gross Amounts at Which Carried at Close of Period, Total 14,341      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (7,300)      
Hamilton Crossing, Chattanooga, TN        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances 9,102      
Initial Cost, Land 4,014      
Initial Cost, Buildings and Improvements 5,906      
Costs Capitalized Subsequent to Acquisition 7,004      
Sales of Outparcel Land (1,370)      
Gross Amounts at Which Carried at Close of Period, Land 2,644      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 12,910      
Gross Amounts at Which Carried at Close of Period, Total 15,554      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (7,265)      
Harford Annex, Bel Air, MD        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances 0      
Initial Cost, Land 2,854      
Initial Cost, Buildings and Improvements 9,718      
Costs Capitalized Subsequent to Acquisition 1,357      
Sales of Outparcel Land 0      
Gross Amounts at Which Carried at Close of Period, Land 2,854      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 11,075      
Gross Amounts at Which Carried at Close of Period, Total 13,929      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (3,986)      
The Landing at Arbor Place, Atlanta (Douglasville), GA        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances 0      
Initial Cost, Land 4,993      
Initial Cost, Buildings and Improvements 14,330      
Costs Capitalized Subsequent to Acquisition 3,512      
Sales of Outparcel Land (2,242)      
Gross Amounts at Which Carried at Close of Period, Land 2,751      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 17,842      
Gross Amounts at Which Carried at Close of Period, Total 20,593      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (9,684)      
Layton Hills Convenience Center, Layton, UT        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances 0      
Initial Cost, Land 0      
Initial Cost, Buildings and Improvements 8      
Costs Capitalized Subsequent to Acquisition 6,270      
Sales of Outparcel Land 0      
Gross Amounts at Which Carried at Close of Period, Land 2,794      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 3,484      
Gross Amounts at Which Carried at Close of Period, Total 6,278      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (1,711)      
Layton Hills Plaza, Layton, UT        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances 0      
Initial Cost, Land 0      
Initial Cost, Buildings and Improvements 2      
Costs Capitalized Subsequent to Acquisition 982      
Sales of Outparcel Land 0      
Gross Amounts at Which Carried at Close of Period, Land 673      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 311      
Gross Amounts at Which Carried at Close of Period, Total 984      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (241)      
Parkdale Crossing, Beaumont, TX        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances 0      
Initial Cost, Land 2,994      
Initial Cost, Buildings and Improvements 7,408      
Costs Capitalized Subsequent to Acquisition 2,482      
Sales of Outparcel Land (355)      
Gross Amounts at Which Carried at Close of Period, Land 2,639      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 9,890      
Gross Amounts at Which Carried at Close of Period, Total 12,529      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (3,769)      
Parkway Plaza, Fort Oglethorpe, GA        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances 0      
Initial Cost, Land 2,675      
Initial Cost, Buildings and Improvements 13,435      
Costs Capitalized Subsequent to Acquisition 22      
Sales of Outparcel Land 0      
Gross Amounts at Which Carried at Close of Period, Land 2,675      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 13,457      
Gross Amounts at Which Carried at Close of Period, Total 16,132      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (1,335)      
Pearland Hotel, Pearland, TX        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances 0      
Initial Cost, Land 0      
Initial Cost, Buildings and Improvements 16,149      
Costs Capitalized Subsequent to Acquisition 2,266      
Sales of Outparcel Land 0      
Gross Amounts at Which Carried at Close of Period, Land 0      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 18,415      
Gross Amounts at Which Carried at Close of Period, Total 18,415      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (5,054)      
Pearland Office, Pearland, TX        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances 0      
Initial Cost, Land 0      
Initial Cost, Buildings and Improvements 7,849      
Costs Capitalized Subsequent to Acquisition 2,594      
Sales of Outparcel Land 0      
Gross Amounts at Which Carried at Close of Period, Land 0      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 10,443      
Gross Amounts at Which Carried at Close of Period, Total 10,443      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (3,176)      
Pearland Residential Mgmt, Pearland, TX        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances 0      
Initial Cost, Land 0      
Initial Cost, Buildings and Improvements 9,666      
Costs Capitalized Subsequent to Acquisition 9      
Sales of Outparcel Land 0      
Gross Amounts at Which Carried at Close of Period, Land 0      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 9,675      
Gross Amounts at Which Carried at Close of Period, Total 9,675      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (2,531)      
The Plaza at Fayette, Lexington, KY        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances 0      
Initial Cost, Land 9,531      
Initial Cost, Buildings and Improvements 27,646      
Costs Capitalized Subsequent to Acquisition 2,308      
Sales of Outparcel Land 0      
Gross Amounts at Which Carried at Close of Period, Land 9,531      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 29,954      
Gross Amounts at Which Carried at Close of Period, Total 39,485      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (9,796)      
The Promenade, D'Iberville, MS        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances 0      
Initial Cost, Land 16,278      
Initial Cost, Buildings and Improvements 48,806      
Costs Capitalized Subsequent to Acquisition 25,035      
Sales of Outparcel Land (706)      
Gross Amounts at Which Carried at Close of Period, Land 17,953      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 71,460      
Gross Amounts at Which Carried at Close of Period, Total 89,413      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (18,791)      
The Shoppes At Hamilton Place, Chattanooga, TN        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances 0      
Initial Cost, Land 4,894      
Initial Cost, Buildings and Improvements 11,700      
Costs Capitalized Subsequent to Acquisition (575)      
Sales of Outparcel Land 0      
Gross Amounts at Which Carried at Close of Period, Land 2,811      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 13,208      
Gross Amounts at Which Carried at Close of Period, Total 16,019      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (4,799)      
The Shoppes at St. Clair Square, Fairview Heights, IL        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances 0      
Initial Cost, Land 8,250      
Initial Cost, Buildings and Improvements 23,623      
Costs Capitalized Subsequent to Acquisition 552      
Sales of Outparcel Land (5,044)      
Gross Amounts at Which Carried at Close of Period, Land 3,206      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 24,175      
Gross Amounts at Which Carried at Close of Period, Total 27,381      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (9,883)      
Statesboro Crossing, Statesboro, GA        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances 10,836      
Initial Cost, Land 2,855      
Initial Cost, Buildings and Improvements 17,805      
Costs Capitalized Subsequent to Acquisition 2,368      
Sales of Outparcel Land (235)      
Gross Amounts at Which Carried at Close of Period, Land 2,840      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 19,953      
Gross Amounts at Which Carried at Close of Period, Total 22,793      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (5,547)      
Sunrise Commons, Brownsville, TX        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances 0      
Initial Cost, Land 1,013      
Initial Cost, Buildings and Improvements 7,525      
Costs Capitalized Subsequent to Acquisition 2,520      
Sales of Outparcel Land 0      
Gross Amounts at Which Carried at Close of Period, Land 1,013      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 10,045      
Gross Amounts at Which Carried at Close of Period, Total 11,058      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (3,790)      
The Terrace, Chattanooga, TN        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances 12,709      
Initial Cost, Land 4,166      
Initial Cost, Buildings and Improvements 9,929      
Costs Capitalized Subsequent to Acquisition 8,475      
Sales of Outparcel Land 0      
Gross Amounts at Which Carried at Close of Period, Land 6,536      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 16,034      
Gross Amounts at Which Carried at Close of Period, Total 22,570      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (6,573)      
West Towne Crossing, Madison, WI        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances 0      
Initial Cost, Land 1,151      
Initial Cost, Buildings and Improvements 2,955      
Costs Capitalized Subsequent to Acquisition 7,940      
Sales of Outparcel Land 0      
Gross Amounts at Which Carried at Close of Period, Land 2,126      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 9,920      
Gross Amounts at Which Carried at Close of Period, Total 12,046      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (3,346)      
WestGate Crossing, Spartanburg, SC        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances 0      
Initial Cost, Land 1,082      
Initial Cost, Buildings and Improvements 3,422      
Costs Capitalized Subsequent to Acquisition 8,348      
Sales of Outparcel Land 0      
Gross Amounts at Which Carried at Close of Period, Land 1,082      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 11,770      
Gross Amounts at Which Carried at Close of Period, Total 12,852      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (5,128)      
Westmoreland Crossing, Greensburg, PA        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances 0      
Initial Cost, Land 2,898      
Initial Cost, Buildings and Improvements 21,167      
Costs Capitalized Subsequent to Acquisition 9,252      
Sales of Outparcel Land 0      
Gross Amounts at Which Carried at Close of Period, Land 2,898      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 30,419      
Gross Amounts at Which Carried at Close of Period, Total 33,317      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (11,683)      
Chesterfield Mall, Chesterfield, MO        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances 0      
Initial Cost, Land 11,083      
Initial Cost, Buildings and Improvements 282,140      
Costs Capitalized Subsequent to Acquisition (293,223)      
Sales of Outparcel Land 0      
Gross Amounts at Which Carried at Close of Period, Land 0      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 0      
Gross Amounts at Which Carried at Close of Period, Total 0      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation 0      
College Square, Morristown, TN        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances 0      
Initial Cost, Land 2,954      
Initial Cost, Buildings and Improvements 17,787      
Costs Capitalized Subsequent to Acquisition (20,653)      
Sales of Outparcel Land (88)      
Gross Amounts at Which Carried at Close of Period, Land 0      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 0      
Gross Amounts at Which Carried at Close of Period, Total 0      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation 0      
Foothills Mall, Maryville, TN        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances 0      
Initial Cost, Land 5,558      
Initial Cost, Buildings and Improvements 25,244      
Costs Capitalized Subsequent to Acquisition (30,802)      
Sales of Outparcel Land 0      
Gross Amounts at Which Carried at Close of Period, Land 0      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 0      
Gross Amounts at Which Carried at Close of Period, Total 0      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation 0      
Midland Mall, Midland, MI        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances 0      
Initial Cost, Land 10,321      
Initial Cost, Buildings and Improvements 29,429      
Costs Capitalized Subsequent to Acquisition (39,750)      
Sales of Outparcel Land 0      
Gross Amounts at Which Carried at Close of Period, Land 0      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 0      
Gross Amounts at Which Carried at Close of Period, Total 0      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation 0      
One Oyster Point, Newport News, VA        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances 0      
Initial Cost, Land 1,822      
Initial Cost, Buildings and Improvements 3,623      
Costs Capitalized Subsequent to Acquisition (5,445)      
Sales of Outparcel Land 0      
Gross Amounts at Which Carried at Close of Period, Land 0      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 0      
Gross Amounts at Which Carried at Close of Period, Total 0      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation 0      
The Outlet Shoppes at Oklahoma City, Oklahoma City, OK        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances 0      
Initial Cost, Land 7,402      
Initial Cost, Buildings and Improvements 50,268      
Costs Capitalized Subsequent to Acquisition (57,670)      
Sales of Outparcel Land 0      
Gross Amounts at Which Carried at Close of Period, Land 0      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 0      
Gross Amounts at Which Carried at Close of Period, Total 0      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation 0      
Two Oyster Point, Newport News, VA        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances 0      
Initial Cost, Land 1,543      
Initial Cost, Buildings and Improvements 3,974      
Costs Capitalized Subsequent to Acquisition (5,517)      
Sales of Outparcel Land 0      
Gross Amounts at Which Carried at Close of Period, Land 0      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 0      
Gross Amounts at Which Carried at Close of Period, Total 0      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation 0      
Wausau Center, Wausau, WI        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances 0      
Initial Cost, Land 5,231      
Initial Cost, Buildings and Improvements 24,705      
Costs Capitalized Subsequent to Acquisition (24,705)      
Sales of Outparcel Land (5,231)      
Gross Amounts at Which Carried at Close of Period, Land 0      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 0      
Gross Amounts at Which Carried at Close of Period, Total 0      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation 0      
Other        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances 0      
Initial Cost, Land 2,777      
Initial Cost, Buildings and Improvements 4,002      
Costs Capitalized Subsequent to Acquisition (1,385)      
Sales of Outparcel Land (324)      
Gross Amounts at Which Carried at Close of Period, Land 3,214      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 1,856      
Gross Amounts at Which Carried at Close of Period, Total 5,070      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation (1,719)      
Developments in progress consisting of construction and Development Properties        
Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances 0      
Initial Cost, Land 0      
Initial Cost, Buildings and Improvements 0      
Costs Capitalized Subsequent to Acquisition 85,346      
Sales of Outparcel Land 0      
Gross Amounts at Which Carried at Close of Period, Land 0      
Gross Amounts at Which Carried at Close of Period, Buildings and Improvements 85,346      
Gross Amounts at Which Carried at Close of Period, Total 85,346      
Gross Amounts at Which Carried at Close of Period, Accumulated Depreciation $ 0