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Fair Value Measurement (Details) (Tanger Properties Limited Partnership [Member], USD $)
Sep. 30, 2012
Dec. 31, 2011
Tanger Properties Limited Partnership [Member]
   
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Debt Instrument, Fair Value Disclosure $ 1,200,000,000 $ 1,100,000,000
Long-term Debt $ 1,052,821,000 $ 1,025,542,000