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Debt of the Company (Details) (USD $)
Sep. 30, 2012
Dec. 31, 2011
Tanger Factory Outlet Centers, Inc [Member]
   
Line of Credit Facility [Line Items]    
Long-term Line of Credit $ 136,769,000 $ 357,092,000
Tanger Properties Limited Partnership [Member]
   
Line of Credit Facility [Line Items]    
Long-term Line of Credit 136,769,000 357,092,000
Tanger Properties Limited Partnership [Member] | Line of Credit [Member]
   
Line of Credit Facility [Line Items]    
Long-term Line of Credit 136,769,000 [1] 357,092,000 [1]
Debt [Member] | Tanger Factory Outlet Centers, Inc [Member] | Line of Credit [Member]
   
Line of Credit Facility [Line Items]    
Guarantor Obligations, Maximum Exposure, Undiscounted 520,000,000  
Debt [Member] | Tanger Factory Outlet Centers, Inc [Member] | Unsecured Term Loan [Member]
   
Line of Credit Facility [Line Items]    
Guarantor Obligations, Current Carrying Value 250,000,000  
Debt [Member] | Tanger Factory Outlet Centers, Inc [Member] | Mortgages [Member]
   
Line of Credit Facility [Line Items]    
Guarantor Obligations, Current Carrying Value 18,300,000  
Debt [Member] | Tanger Properties Limited Partnership [Member] | Line of Credit [Member]
   
Line of Credit Facility [Line Items]    
Long-term Line of Credit $ 136,769,000 $ 357,092,000
[1] We have the option to extend the lines for one additional year to November 10, 2016. These lines require a facility fee payment of 0.25% annually based on the total amount of the commitment. The credit spread and facility fee can vary depending on our investment grade rating.