Annual report pursuant to Section 13 and 15(d)

Investments in Unconsolidated Real Estate Joint Ventures Summary Statements of Operations for Unconsolidated Joint Ventures (Details)

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Investments in Unconsolidated Real Estate Joint Ventures Summary Statements of Operations for Unconsolidated Joint Ventures (Details) (USD $)
 3 Months Ended 12 Months Ended
Dec. 31, 2011
Sep. 30, 2011
Jun. 30, 2011
Mar. 31, 2011
Dec. 31, 2010
Sep. 30, 2010
Jun. 30, 2010
Mar. 31, 2010
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Summary Statements of Operations of Unconsolidated Joint Ventures [Line Items]                      
Asset Impairment Charges                 $ 900,000 $ 1,000,000  
Equity Method Invesment Company and Operating Partnership Share of Real Estate Related Depreciation                 5,475,000 5,146,000 4,859,000
Partnership Interest [Member]
                      
Summary Statements of Operations of Unconsolidated Joint Ventures [Line Items]                      
Equity Method Investment, Summarized Financial Information, Revenue                 38,847,000 37,858,000 35,481,000
Equity Method Investment, Summarized Financial Information, Property Operating Expenses                 18,034,000 18,172,000 16,643,000
Operating Costs and Expenses                 18,034,000 18,172,000 16,643,000
Equity Method Investment, Summarized Financial Information, General and Administrative Expenses                 250,000 455,000 861,000
Asset Impairment Charges                 900,000 0 0
Equity Method Investment, Summarized Financial Information, Depreciation and Amortization                 14,242,000 14,245,000 13,419,000
Operating Expenses                 33,426,000 32,872,000 30,923,000
Operating Income (Loss)                 5,421,000 4,986,000 4,558,000
Interest Expense                 10,456,000 6,947,000 9,913,000
Equity Method Investment, Summarized Financial Information, Net Income (Loss)                 (5,035,000) (1,961,000) (5,355,000)
Tanger Factory Outlet Centers, Inc
                      
Summary Statements of Operations of Unconsolidated Joint Ventures [Line Items]                      
Operating Expenses                 217,287,000 196,672,000 200,655,000
Operating Income (Loss) 28,266,000 26,177,000 22,319,000 21,174,000 24,815,000 23,698,000 20,100,000 11,018,000 97,936,000 79,631,000 69,940,000
Interest Expense                 45,382,000 34,120,000 37,683,000
Income (Loss) from Equity Method Investments                 $ (1,565,000) $ (464,000) $ (1,512,000)