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 ($)
 1 Months Ended 3 Months Ended 9 Months Ended 12 Months Ended
Apr. 30, 2016
Mar. 31, 2016
Sep. 30, 2016
Dec. 31, 2015
Oct. 28, 2016
Aug. 31, 2016
Jun. 23, 2016
Debt Instrument [Line Items]              
Principal     $ 1,741,536,000 $ 1,567,186,000      
Book value of debt [1]     $ 1,724,646,000 $ 1,551,924,000      
Senior Notes [Member] | 6.125% Senior Notes [Member]              
Debt Instrument [Line Items]              
Stated Interest Rate(s)     6.125% 6.125%      
Principal     $ 300,000,000 $ 300,000,000      
Book value of debt [1]     $ 298,103,000 $ 297,739,000      
Senior Notes [Member] | 3.875% Senior Notes [Member] [Member]              
Debt Instrument [Line Items]              
Stated Interest Rate(s)     3.875% 3.875%      
Principal     $ 250,000,000 $ 250,000,000      
Book value of debt [1]     $ 245,275,000 $ 244,829,000      
Senior Notes [Member] | 3.75% Senior Notes [Member]              
Debt Instrument [Line Items]              
Stated Interest Rate(s)     3.75% 3.75%      
Principal     $ 250,000,000 $ 250,000,000      
Book value of debt [1]     $ 246,971,000 246,717,000      
Senior Notes [Member] | 3.125% Senior Notes [Member]              
Debt Instrument [Line Items]              
Stated Interest Rate(s)     3.125%     3.125%  
Principal     $ 250,000,000 0   $ 250,000,000  
Book value of debt [1]     246,724,000 0      
Mortgages Payable [Member] | Atlantic City Outlets The Walk [Member]              
Debt Instrument [Line Items]              
Principal [2]     41,196,000 43,312,000      
Book value of debt [1],[2]     44,110,000 46,605,000      
Mortgages Payable [Member] | Deer Park [Member]              
Debt Instrument [Line Items]              
Principal     0 150,000,000      
Book value of debt [1]     0 149,145,000      
Mortgages Payable [Member] | Foxwoods [Member]              
Debt Instrument [Line Items]              
Principal     70,250,000 70,250,000      
Book value of debt [1]     69,825,000 69,564,000      
Mortgages Payable [Member] | Southaven [Member]              
Debt Instrument [Line Items]              
Principal     59,090,000 45,824,000      
Book value of debt [1]     58,712,000 $ 45,273,000      
Unsecured Notes Payable [Member]              
Debt Instrument [Line Items]              
Stated Interest Rate(s) [2]       1.50%      
Principal [2]     0 $ 10,000,000     $ 10,000,000
Book value of debt [1],[2]     0 9,919,000      
Unsecured Term Loan [Member]              
Debt Instrument [Line Items]              
Principal $ 325,000,000 $ 250,000,000 325,000,000 250,000,000      
Book value of debt [1]     322,195,000 248,443,000      
Unsecured Term Note [Member]              
Debt Instrument [Line Items]              
Principal     0 7,500,000      
Book value of debt [1]     0 7,470,000      
Line of Credit [Member]              
Debt Instrument [Line Items]              
Principal     196,000,000 190,300,000      
Book value of debt [1]     $ 192,731,000 $ 186,220,000      
London Interbank Offered Rate (LIBOR) [Member] | Mortgages Payable [Member] | Deer Park [Member]              
Debt Instrument [Line Items]              
Basis spread on variable rate       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% 1.75%      
London Interbank Offered Rate (LIBOR) [Member] | Unsecured Term Loan [Member]              
Debt Instrument [Line Items]              
Basis spread on variable rate 0.95% 1.05% 0.95% 1.05%      
London Interbank Offered Rate (LIBOR) [Member] | Unsecured Term Note [Member]              
Debt Instrument [Line Items]              
Basis spread on variable rate       1.30%      
London Interbank Offered Rate (LIBOR) [Member] | Line of Credit [Member]              
Debt Instrument [Line Items]              
Basis spread on variable rate     0.90% 0.90%      
Minimum [Member] | Mortgages Payable [Member] | Atlantic City Outlets The Walk [Member]              
Debt Instrument [Line Items]              
Stated Interest Rate(s) [2]     5.14% 5.14%      
Maximum [Member] | Mortgages Payable [Member] | Atlantic City Outlets The Walk [Member]              
Debt Instrument [Line Items]              
Stated Interest Rate(s) [2]     7.65% 7.65%      
Subsequent Event [Member] | Senior Notes [Member] | 3.125% Senior Notes [Member]              
Debt Instrument [Line Items]              
Stated Interest Rate(s)         3.125%    
Principal         $ 350,000,000    
[1] Including premiums and net of debt discount and debt origination costs.
[2] The effective interest rates assigned during the purchase price allocation to the assumed mortgage and note payable during acquisitions in 2011 were as follows: Atlantic City 5.05% and unsecured note payable 3.15%.