Quarterly report pursuant to Section 13 or 15(d)

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

v2.4.0.8
Debt of the Operating Partnership (Schedule of Debt) (Details) (Tanger Properties Limited Partnership [Member], USD $)
 9 Months Ended 9 Months Ended 9 Months Ended 12 Months Ended 3 Months Ended 9 Months Ended 9 Months Ended 12 Months Ended 9 Months Ended 9 Months Ended 3 Months Ended 9 Months Ended 12 Months Ended 3 Months Ended 9 Months Ended 3 Months Ended 9 Months Ended 12 Months Ended 1 Months Ended 0 Months Ended 1 Months Ended 9 Months Ended
Sep. 30, 2013
Dec. 31, 2012
Sep. 30, 2013
Senior Notes [Member]
6.15% Senior Notes [Member]
Dec. 31, 2012
Senior Notes [Member]
6.15% Senior Notes [Member]
Sep. 30, 2013
Senior Notes [Member]
6.125% Senior Notes [Member]
Dec. 31, 2012
Senior Notes [Member]
6.125% Senior Notes [Member]
Sep. 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]
Sep. 30, 2013
Mortgages Payable [Member]
Deer Park [Member]
Sep. 30, 2013
Mortgages Payable [Member]
Deer Park [Member]
Dec. 31, 2012
Mortgages Payable [Member]
Deer Park [Member]
Sep. 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]
Sep. 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]
Sep. 30, 2013
Notes Payable [Member]
Dec. 31, 2012
Notes Payable [Member]
Dec. 31, 2011
Notes Payable [Member]
Sep. 30, 2013
Unsecured Term Loan [Member]
Sep. 30, 2013
Unsecured Term Loan [Member]
Dec. 31, 2012
Unsecured Term Loan [Member]
Sep. 30, 2013
Unsecured Term Note [Member]
Sep. 30, 2013
Unsecured Term Note [Member]
Dec. 31, 2012
Unsecured Term Note [Member]
Sep. 30, 2013
Line of Credit [Member]
Sep. 30, 2013
Line of Credit [Member]
Dec. 31, 2012
Line of Credit [Member]
Oct. 31, 2013
Subsequent Event [Member]
Mortgages Payable [Member]
Deer Park [Member]
Oct. 28, 2013
Subsequent Event [Member]
Mortgages Payable [Member]
Deer Park [Member]
Oct. 24, 2013
Subsequent Event [Member]
Line of Credit [Member]
Oct. 31, 2013
Subsequent Event [Member]
Line of Credit [Member]
Sep. 30, 2013
Subsequent Event [Member]
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                     1.50% [2]                     1.60% [3]   1.80% [3] 1.30%     1.00% [4]   1.25% [4] 1.50% [2]     1.00% 1.10%
Derivative, fixed interest rate                                                             1.30% 1.30%      
Maturity Date     Nov. 01, 2015   Jun. 01, 2020           Aug. 01, 2018 [2]   Aug. 01, 2015 [1]     Jan. 01, 2016 [1]     Jun. 30, 2016 [1]       Feb. 23, 2019 [3]     Aug. 01, 2017     Nov. 10, 2015 [4]            
Maturity Date Range, Start             Nov. 01, 2021                                                        
Maturity Date Range, End             Dec. 01, 2026                                                        
Principal $ 1,324,070,000 $ 1,089,689,000 $ 250,000,000 $ 250,000,000 $ 300,000,000 $ 300,000,000 $ 49,148,000 [1] $ 52,212,000 [1]   $ 150,000,000 [2] $ 150,000,000 [2] $ 0 [2] $ 30,139,000 [1] $ 30,631,000 [1]   $ 18,283,000 $ 18,540,000 [1]   $ 10,000,000 [1] $ 10,000,000 [1]   $ 250,000,000 [3] $ 250,000,000 [3] $ 250,000,000 [3] $ 7,500,000 $ 7,500,000 $ 0 $ 259,000,000 [4] $ 259,000,000 [4] $ 178,306,000 [4]   $ 150,000,000 [2]      
Premium (Discount) 1,775,000 3,848,000 (238,000) (317,000) (1,515,000) (1,650,000) 4,189,000 [1] 4,495,000 [1]   (1,583,000) [2] (1,583,000) [2] 0 [2] 1,141,000 [1] 1,581,000 [1]   216,000 [1] 285,000 [1]   (435,000) [1] (546,000) [1]   0 [3] 0 [3] 0 [3] 0 0 0 0 [4] 0 [4] 0 [4]          
Effective interest rate percentage                 5.05%           3.40%     4.68%     3.15%                   2.80% 2.80%      
Debt Instrument, Term                   5 years 0 months 0 days                                                  
Extended maturity date                                                         Nov. 10, 2016            
Line of credit facility, commitment fee percentage                                                         0.175%         0.15% 0.175%
Debt Issuance Cost                                                                 $ 1,500,000    
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] On August 30, 2013, as part of the acquisition of a controlling interest in Deer Park, we assumed an interest-only mortgage loan that has a 5 year term and carries an interest rate of LIBOR + 1.50%. In October 2013, we entered into interest rate swap agreements that fix the base LIBOR rate at an average of 1.30%, creating a contractual interest rate of 2.80%.
[3] This unsecured term loan is pre-payable without penalty beginning in February of 2015.
[4] had the option to extend the lines for one additional year to November 10, 2016. These lines required 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. In October 2013, we amended the lines of credit which extended the maturity to October 2017 with the ability to extend for one additional year, reduced the interest rate spread over LIBOR to 1.00% and reduced the facility fee to 0.15%.