Quarterly report pursuant to Section 13 or 15(d)

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

v3.19.3
Debt of the Operating Partnership (Schedule of Debt) (Details) - Tanger Properties Limited Partnership [Member] - USD ($)
9 Months Ended
Sep. 30, 2019
Dec. 31, 2018
Dec. 31, 2011
Debt Instrument [Line Items]      
Principal $ 1,587,269,000 $ 1,730,779,000  
Book value of debt $ 1,571,923,000 1,712,918,000  
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 $ 247,145,000 246,664,000  
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 $ 248,035,000 247,765,000  
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 $ 346,079,000 345,669,000  
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 296,856,000 296,565,000  
Mortgages Payable [Member] | Atlantic City Outlets The Walk [Member]      
Debt Instrument [Line Items]      
Principal 31,769,000 34,279,000  
Book value of debt 33,491,000 36,298,000  
Effective interest rates     5.05%
Mortgages Payable [Member] | Southaven [Member]      
Debt Instrument [Line Items]      
Principal 51,400,000 51,400,000  
Book value of debt 51,247,000 51,173,000  
Unsecured Term Loan [Member]      
Debt Instrument [Line Items]      
Principal 350,000,000 350,000,000  
Book value of debt 347,253,000 346,799,000  
Line of Credit [Member]      
Debt Instrument [Line Items]      
Principal 4,100,000 145,100,000  
Book value of debt $ 1,817,000 $ 141,985,000  
London Interbank Offered Rate (LIBOR) [Member] | Mortgages Payable [Member] | Southaven [Member]      
Debt Instrument [Line Items]      
Basis spread on variable rate 1.80%    
London Interbank Offered Rate (LIBOR) [Member] | Unsecured Term Loan [Member]      
Debt Instrument [Line Items]      
Basis spread on variable rate 0.90%    
London Interbank Offered Rate (LIBOR) [Member] | Line of Credit [Member]      
Debt Instrument [Line Items]      
Basis spread on variable rate 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%