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 $)
In Thousands, unless otherwise specified
 6 Months Ended 6 Months Ended 6 Months Ended 12 Months Ended 6 Months Ended 6 Months Ended 12 Months Ended 6 Months Ended 3 Months Ended 6 Months Ended 12 Months Ended 3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2013
Dec. 31, 2012
Jun. 30, 2013
Senior Notes [Member]
6.15% Senior Notes [Member]
Dec. 31, 2012
Senior Notes [Member]
6.15% Senior Notes [Member]
Jun. 30, 2013
Senior Notes [Member]
6.125% Senior Notes [Member]
Dec. 31, 2012
Senior Notes [Member]
6.125% Senior Notes [Member]
Jun. 30, 2013
Mortgages Payable [Member]
Atlantic City Outlets The Walk [Member]
Dec. 31, 2012
Mortgages Payable [Member]
Atlantic City Outlets The Walk [Member]
Sep. 30, 2011
Mortgages Payable [Member]
Atlantic City Outlets The Walk [Member]
Jun. 30, 2013
Mortgages Payable [Member]
Ocean City Factory Outlets [Member]
Dec. 31, 2012
Mortgages Payable [Member]
Ocean City Factory Outlets [Member]
Sep. 30, 2011
Mortgages Payable [Member]
Ocean City Factory Outlets [Member]
Jun. 30, 2013
Mortgages Payable [Member]
The Outlets at Hershey [Member]
Dec. 31, 2012
Mortgages Payable [Member]
The Outlets at Hershey [Member]
Sep. 30, 2011
Mortgages Payable [Member]
The Outlets at Hershey [Member]
Jun. 30, 2013
Notes Payable [Member]
Dec. 31, 2012
Notes Payable [Member]
Dec. 31, 2011
Notes Payable [Member]
Jun. 30, 2013
Unsecured Term Loan [Member]
Jun. 30, 2013
Unsecured Term Loan [Member]
Dec. 31, 2012
Unsecured Term Loan [Member]
Jun. 30, 2013
Line of Credit [Member]
Jun. 30, 2013
Line of Credit [Member]
Dec. 31, 2012
Line of Credit [Member]
Debt Instrument [Line Items]                                                
Stated Interest Rate(s)     6.15% 6.15% 6.125% 6.125%       5.24% [1] 5.24% [1]         1.50% [1] 1.50% [1]              
Stated Interest Rate(s), Minimum             5.14% [1] 5.14% [1]         5.17% [1] 5.17% [1]                    
Stated Interest Rate(s), Maximum             7.65% [1] 7.65% [1]         8.00% [1] 8.00% [1]                    
Interst Rate, Basis Spread on Variable Rate                                     1.60% [2]   1.80% [2] 1.00% [2]   1.25% [3]
Maturity Date     Nov. 01, 2015   Jun. 01, 2020         Jan. 01, 2016 [1]     Aug. 01, 2015 [1]     Jun. 30, 2016 [1]       Feb. 23, 2019 [2]     Nov. 10, 2015 [3]  
Maturity Date Range, Start             Nov. 01, 2021                                  
Maturity Date Range, End             Dec. 01, 2026                                  
Principal $ 1,121,521 $ 1,089,689 $ 250,000 $ 250,000 $ 300,000 $ 300,000 $ 49,751 [1] $ 52,212 [1]   $ 18,367 [1] $ 18,540 [1]   $ 30,303 [1] $ 30,631 [1]   $ 10,000 [1] $ 10,000 [1]   $ 250,000 [2] $ 250,000 [2] $ 250,000 [2] $ 213,100 [3] $ 213,100 [3] $ 178,306 [3]
Premium (Discount) $ 3,518 $ 3,848 $ (265) $ (317) $ (1,561) $ (1,650) $ 4,287 [1] $ 4,495 [1]   $ 240 [1] $ 285 [1]   $ 1,289 [1] $ 1,581 [1]   $ (472) [1] $ (546) [1]   $ 0 [2] $ 0 [2] $ 0 [2] $ 0 [3] $ 0 [3] $ 0 [3]
Effective interest rate percentage                 5.05%     4.68%     3.40%     3.15%            
Extended maturity date                                             Nov. 10, 2016  
Line of credit facility, commitment fee percentage                                             0.175%  
Line of credit, dividend restrictions, percentage of funds from operations allowed on a cumulative basis                                             95.00%  
[1] The effective interest rates assigned during the purchase price allocation to these assumed mortgages and note payable during acquisitions in 2011 were as follows: Atlantic City 5.05%, Ocean City 4.68%, Hershey 3.40% and note payable 3.15%.
[2] Our unsecured term loan is pre-payable without penalty beginning in February of 2015.
[3] We have the option to extend the lines for one additional year to November 10, 2016. These lines require a facility fee payment of 0.175% annually based on the total amount of the commitment. The credit spread and facility fee can vary depending on our investment grade rating.