Quarterly report pursuant to Section 13 or 15(d)

Debt of the Operating Partnership (Schedule of Debt) (Details)

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Debt of the Operating Partnership (Schedule of Debt) (Details) - Tanger Properties Limited Partnership [Member] - USD ($)
$ in Thousands
 9 Months Ended 12 Months Ended
Sep. 30, 2015
Dec. 31, 2014
Jul. 01, 2015
Jun. 30, 2015
Debt Instrument [Line Items]        
Principal $ 1,542,796 $ 1,446,830    
Premium (Discount), Net (3,572) (3,636)    
Senior Notes [Member]        
Debt Instrument [Line Items]        
Premium (Discount), Net $ (5,919) $ (6,426)    
Senior Notes [Member] | 6.125% Senior Notes [Member]        
Debt Instrument [Line Items]        
Stated Interest Rate(s) 6.125% 6.125%    
Principal $ 300,000 $ 300,000    
Discount $ (1,123) $ (1,276)    
Senior Notes [Member] | 3.875% Senior Notes [Member] [Member]        
Debt Instrument [Line Items]        
Stated Interest Rate(s) 3.875% 3.875%    
Principal $ 250,000 $ 250,000    
Discount $ (3,468) $ (3,732)    
Senior Notes [Member] | 3.75% Senior Notes [Member]        
Debt Instrument [Line Items]        
Stated Interest Rate(s) 3.75% 3.75%    
Principal $ 250,000 $ 250,000    
Discount (1,328) (1,418)    
Mortgages Payable [Member]        
Debt Instrument [Line Items]        
Premium (Discount), Net $ 2,469 $ 3,031    
Mortgages Payable [Member] | Atlantic City Outlets The Walk [Member]        
Debt Instrument [Line Items]        
Stated Interest Rate(s), Minimum [1] 5.14% 5.14%    
Stated Interest Rate(s), Maximum [1] 7.65% 7.65%    
Principal [1] $ 43,998 $ 45,997    
Premium [1] 3,393 3,694    
Mortgages Payable [Member] | Deer Park [Member]        
Debt Instrument [Line Items]        
Principal 150,000 150,000    
Discount (924) (1,161)    
Mortgages Payable [Member] | Foxwoods [Member]        
Debt Instrument [Line Items]        
Principal $ 70,250 $ 25,235    
Mortgages Payable [Member] | The Outlets at Hershey [Member]        
Debt Instrument [Line Items]        
Stated Interest Rate(s), Minimum [1] 5.17% 5.17%    
Stated Interest Rate(s), Maximum [1] 8.00% 8.00%    
Principal $ 0 [1] $ 29,271 [1]   $ 29,000
Premium $ 0 [1] $ 399 [1]   $ 201
Mortgages Payable [Member] | Ocean City Factory Outlets [Member]        
Debt Instrument [Line Items]        
Stated Interest Rate(s) [1] 5.24% 5.24%    
Principal $ 0 [1] $ 17,827 [1] $ 17,600  
Premium 0 [1] 99 [1] $ 51  
Mortgages Payable [Member] | Southaven [Member]        
Debt Instrument [Line Items]        
Principal $ 15,248 $ 0    
Notes Payable [Member]        
Debt Instrument [Line Items]        
Stated Interest Rate(s) [1] 1.50% 1.50%    
Principal [1] $ 10,000 $ 10,000    
Discount [1] (122) (241)    
Unsecured Term Loan [Member]        
Debt Instrument [Line Items]        
Principal 250,000 250,000    
Unsecured Term Note [Member]        
Debt Instrument [Line Items]        
Principal 7,500 7,500    
Line of Credit [Member]        
Debt Instrument [Line Items]        
Principal $ 195,800 $ 111,000    
London Interbank Offered Rate (LIBOR) [Member] | Mortgages Payable [Member] | Deer Park [Member]        
Debt Instrument [Line Items]        
Basis spread on variable rate 1.50% 1.50%    
London Interbank Offered Rate (LIBOR) [Member] | Mortgages Payable [Member] | Foxwoods [Member]        
Debt Instrument [Line Items]        
Basis spread on variable rate 1.65% 1.65%    
London Interbank Offered Rate (LIBOR) [Member] | Mortgages Payable [Member] | Southaven [Member]        
Debt Instrument [Line Items]        
Basis spread on variable rate 1.75%      
London Interbank Offered Rate (LIBOR) [Member] | Unsecured Term Loan [Member]        
Debt Instrument [Line Items]        
Basis spread on variable rate 1.05% 1.05%    
London Interbank Offered Rate (LIBOR) [Member] | Unsecured Term Note [Member]        
Debt Instrument [Line Items]        
Basis spread on variable rate 1.30% 1.30%    
London Interbank Offered Rate (LIBOR) [Member] | Line of Credit [Member]        
Debt Instrument [Line Items]        
Basis spread on variable rate 1.00% 1.00%    
[1] The effective interest rates assigned during the purchase price allocation to these assumed mortgages and note payable during acquisitions in 2011 were as follows: Atlantic City 5.05%, Hershey 3.40%, Ocean City 4.68%, and note payable 3.15%.