Annual report pursuant to Section 13 and 15(d)

Debt of the Operating Partnership (Details)

v3.19.3.a.u2
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
Oct. 31, 2018
Feb. 28, 2018
Jan. 31, 2018
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Jul. 31, 2017
Dec. 31, 2011
Debt Instrument [Line Items]                      
Principal             $ 1,582,309,000 $ 1,730,779,000      
Book value of debt             1,569,773,000 1,712,918,000      
Debt issuance cost net, recorded in prepaids and other assets             2,000,000.0        
Debt Issuance Costs, Net             11,200,000 14,100,000      
Amortization of Debt Issuance Costs             $ 3,004,000 3,058,000 $ 3,263,000    
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             $ 247,308,000 246,664,000      
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             $ 248,127,000 247,765,000      
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             $ 346,215,000 345,669,000      
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   $ 300,000,000.0  
Book value of debt             296,953,000 296,565,000      
Mortgages [Member] | Atlantic City Outlets The Walk [Member]                      
Debt Instrument [Line Items]                      
Principal             30,909,000 34,279,000      
Book value of debt             32,531,000 36,298,000      
Effective interest rate                     5.05%
Mortgages [Member] | Southaven [Member]                      
Debt Instrument [Line Items]                      
Principal   $ 60,000,000.0     $ 51,400,000 $ 60,000,000.0 51,400,000 51,400,000      
Book value of debt             51,272,000 51,173,000      
Unsecured Term Loan [Member]                      
Debt Instrument [Line Items]                      
Principal $ 325,000,000.0     $ 350,000,000.0     350,000,000 350,000,000      
Book value of debt             347,367,000 346,799,000      
Line of Credit [Member]                      
Debt Instrument [Line Items]                      
Principal             0 145,100,000      
Book value of debt             $ 0 $ 141,985,000      
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%     0.90%     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%