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 6 Months Ended
Jan. 31, 2018
Dec. 31, 2017
Feb. 28, 2018
Jan. 31, 2018
Jun. 30, 2018
Dec. 31, 2011
Debt Instrument [Line Items]            
Principal   $ 1,780,562,000     $ 1,785,992,000  
Book value of debt   1,763,651,000     $ 1,768,207,000  
Senior Notes [Member] | 3.875% 2023 Senior Notes [Member]            
Debt Instrument [Line Items]            
Stated Interest Rate(s)         3.875%  
Principal   250,000,000     $ 250,000,000  
Book value of debt   246,036,000     $ 246,348,000  
Senior Notes [Member] | 3.75% 2024 Senior Notes [Member]            
Debt Instrument [Line Items]            
Stated Interest Rate(s)         3.75%  
Principal   250,000,000     $ 250,000,000  
Book value of debt   247,410,000     $ 247,587,000  
Senior Notes [Member] | 3.125% 2026 Senior Notes [Member]            
Debt Instrument [Line Items]            
Stated Interest Rate(s)         3.125%  
Principal   350,000,000     $ 350,000,000  
Book value of debt   345,128,000     $ 345,397,000  
Senior Notes [Member] | 3.875% 2027 Senior Notes [Member]            
Debt Instrument [Line Items]            
Stated Interest Rate(s)         3.875%  
Principal   300,000,000     $ 300,000,000  
Book value of debt   296,182,000     296,373,000  
Mortgages Payable [Member] | Atlantic City Outlets The Walk [Member]            
Debt Instrument [Line Items]            
Principal   37,462,000     35,892,000  
Book value of debt   39,879,000     38,111,000  
Effective interest rates           5.05%
Mortgages Payable [Member] | Southaven [Member]            
Debt Instrument [Line Items]            
Principal $ 60,000,000 60,000,000 $ 51,400,000.0 $ 60,000,000 51,400,000  
Book value of debt   59,881,000     51,124,000  
Unsecured Term Loan [Member]            
Debt Instrument [Line Items]            
Principal   325,000,000     325,000,000  
Book value of debt   322,975,000     323,249,000  
Line of Credit [Member]            
Debt Instrument [Line Items]            
Principal   208,100,000     223,700,000  
Book value of debt   $ 206,160,000     $ 220,018,000  
London Interbank Offered Rate (LIBOR) [Member] | Mortgages Payable [Member] | Southaven [Member]            
Debt Instrument [Line Items]            
Basis spread on variable rate 1.75%   1.80%   1.80%  
London Interbank Offered Rate (LIBOR) [Member] | Unsecured Term Loan [Member]            
Debt Instrument [Line Items]            
Basis spread on variable rate         0.95%  
London Interbank Offered Rate (LIBOR) [Member] | Line of Credit [Member]            
Debt Instrument [Line Items]            
Basis spread on variable rate   0.90%   0.875% 0.875%  
Minimum [Member] | Mortgages Payable [Member] | Atlantic City Outlets The Walk [Member]            
Debt Instrument [Line Items]            
Stated Interest Rate(s)         5.14%  
Maximum [Member] | Mortgages Payable [Member] | Atlantic City Outlets The Walk [Member]            
Debt Instrument [Line Items]            
Stated Interest Rate(s)         7.65%