Annual report pursuant to Section 13 and 15(d)

Debt of the Operating Partnership (Details)

v3.10.0.1
Debt of the Operating Partnership (Details) - Tanger Properties Limited Partnership [Member] - USD ($)
1 Months Ended 12 Months Ended
Sep. 30, 2018
Jan. 31, 2018
Dec. 31, 2017
Mar. 31, 2016
Oct. 31, 2018
Feb. 28, 2018
Jan. 31, 2018
Apr. 30, 2016
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Jul. 31, 2017
Oct. 31, 2016
Dec. 31, 2011
Debt Instrument [Line Items]                            
Principal     $ 1,780,562,000           $ 1,730,779,000 $ 1,780,562,000        
Book value of debt     1,763,651,000           1,712,918,000 1,763,651,000        
Debt Issuance Costs, Net     12,700,000           14,100,000 12,700,000        
Amortization of Debt Issuance Costs                 $ 3,058,000 3,263,000 $ 3,237,000      
Senior Notes [Member] | 3.875% 2023 Senior Notes [Member]                            
Debt Instrument [Line Items]                            
Stated Interest Rate(s)                 3.875%          
Principal     250,000,000           $ 250,000,000 250,000,000        
Book value of debt     246,036,000           $ 246,664,000 246,036,000        
Senior Notes [Member] | 3.75% 2024 Senior Notes [Member]                            
Debt Instrument [Line Items]                            
Stated Interest Rate(s)                 3.75%          
Principal     250,000,000           $ 250,000,000 250,000,000        
Book value of debt     247,410,000           $ 247,765,000 247,410,000        
Senior Notes [Member] | 3.125% 2026 Senior Notes [Member]                            
Debt Instrument [Line Items]                            
Stated Interest Rate(s)                 3.125%       3.125%  
Principal     350,000,000           $ 350,000,000 350,000,000        
Book value of debt     345,128,000           $ 345,669,000 345,128,000        
Senior Notes [Member] | 3.875% 2027 Senior Notes [Member]                            
Debt Instrument [Line Items]                            
Stated Interest Rate(s)                 3.875%     3.875%    
Principal     300,000,000           $ 300,000,000 300,000,000   $ 300,000,000    
Book value of debt     296,182,000           296,565,000 296,182,000        
Mortgages [Member] | Atlantic City Outlets The Walk [Member]                            
Debt Instrument [Line Items]                            
Principal     37,462,000           34,279,000 37,462,000        
Book value of debt     39,879,000           36,298,000 39,879,000        
Effective interest rate                           5.05%
Mortgages [Member] | Southaven [Member]                            
Debt Instrument [Line Items]                            
Principal   $ 60,000,000 60,000,000     $ 51,400,000 $ 60,000,000   51,400,000 60,000,000        
Book value of debt     59,881,000           51,173,000 59,881,000        
Unsecured Term Loan [Member]                            
Debt Instrument [Line Items]                            
Principal $ 325,000,000   325,000,000 $ 250,000,000 $ 350,000,000     $ 325,000,000 350,000,000 325,000,000        
Book value of debt     322,975,000           346,799,000 322,975,000        
Line of Credit [Member]                            
Debt Instrument [Line Items]                            
Principal     208,100,000           145,100,000 208,100,000        
Book value of debt     $ 206,160,000           $ 141,985,000 $ 206,160,000        
London Interbank Offered Rate (LIBOR) [Member] | Mortgages [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%     1.05% 0.90%     0.95% 0.90%          
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 [Member] | Atlantic City Outlets The Walk [Member]                            
Debt Instrument [Line Items]                            
Stated Interest Rate(s)                 5.14%          
Maximum [Member] | Mortgages [Member] | Atlantic City Outlets The Walk [Member]                            
Debt Instrument [Line Items]                            
Stated Interest Rate(s)                 7.65%