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
 6 Months Ended 12 Months Ended
Jun. 30, 2015
Dec. 31, 2014
May. 01, 2015
Debt Instrument [Line Items]      
Principal $ 1,518,200 $ 1,446,830  
Premium (Discount), Net (3,710) (3,636)  
Senior Notes [Member]      
Debt Instrument [Line Items]      
Premium (Discount), Net $ (6,090) $ (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 $ (1,175) $ (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 $ (3,557) $ (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 (1,358) (1,418)  
Mortgages Payable [Member]      
Debt Instrument [Line Items]      
Premium (Discount), Net $ 2,542 $ 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 $ 44,673 $ 45,997 [1]  
Premium [1] 3,494 3,694  
Mortgages Payable [Member] | Deer Park [Member]      
Debt Instrument [Line Items]      
Principal 150,000 150,000  
Discount (1,003) (1,161)  
Mortgages Payable [Member] | Foxwoods [Member]      
Debt Instrument [Line Items]      
Principal $ 62,092 $ 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 $ 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 $ 17,635 $ 17,827 [1]  
Premium [1] 51 99  
Mortgages Payable [Member] | Southaven [Member]      
Debt Instrument [Line Items]      
Principal $ 0 $ 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] (162) (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 $ 176,300 $ 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%.