Quarterly report pursuant to Section 13 or 15(d)

Subsequent Events (Details)

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Subsequent Events (Details) (Tanger Properties Limited Partnership [Member], USD $)
3 Months Ended 9 Months Ended 12 Months Ended 0 Months Ended 1 Months Ended 9 Months Ended 1 Months Ended
Sep. 30, 2013
Dec. 31, 2012
Sep. 30, 2013
Line of Credit [Member]
Sep. 30, 2013
Line of Credit [Member]
Dec. 31, 2012
Line of Credit [Member]
Oct. 24, 2013
Line of Credit [Member]
Subsequent Event [Member]
Oct. 31, 2013
Line of Credit [Member]
Subsequent Event [Member]
Sep. 30, 2013
Line of Credit [Member]
Subsequent Event [Member]
Sep. 30, 2013
Deer Park [Member]
Mortgages [Member]
Dec. 31, 2012
Deer Park [Member]
Mortgages [Member]
Oct. 31, 2013
Deer Park [Member]
Mortgages [Member]
Subsequent Event [Member]
Oct. 28, 2013
Deer Park [Member]
Mortgages [Member]
Subsequent Event [Member]
Subsequent Event [Line Items]                        
Line of credit facility, maximum borrowing capacity           $ 520,000,000            
Line of credit facility, commitment fee percentage       0.175%     0.15% 0.175%        
Interst rate, basis spread on variable rate     1.00% [1]   1.25% [1]   1.00% 1.10% 1.50% [2]   1.50% [2]  
Debt Issuance Cost           1,500,000            
Principal $ 1,324,070,000 $ 1,089,689,000 $ 259,000,000 [1] $ 259,000,000 [1] $ 178,306,000 [1]       $ 150,000,000 [2] $ 0 [2]   $ 150,000,000 [2]
Derivative, fixed interest rate                     1.30% 1.30%
Effective interest rate percentage                     2.80% 2.80%
[1] 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%.
[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%.