Annual report pursuant to Section 13 and 15(d)

Debt of the Operating Partnership (Details)

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Debt of the Operating Partnership (Details) (USD $)
12 Months Ended 6 Months Ended 12 Months Ended 12 Months Ended 12 Months Ended 12 Months Ended 9 Months Ended 12 Months Ended 12 Months Ended 12 Months Ended 12 Months Ended 12 Months Ended
Dec. 31, 2012
Tanger Factory Outlet Centers, Inc [Member]
Dec. 31, 2011
Tanger Factory Outlet Centers, Inc [Member]
Dec. 31, 2010
Tanger Factory Outlet Centers, Inc [Member]
Jun. 30, 2010
Tanger Properties Limited Partnership [Member]
Dec. 31, 2012
Tanger Properties Limited Partnership [Member]
Dec. 31, 2011
Tanger Properties Limited Partnership [Member]
Dec. 31, 2010
Tanger Properties Limited Partnership [Member]
Dec. 31, 2009
Tanger Properties Limited Partnership [Member]
Dec. 31, 2012
6.15% Senior Notes [Member]
Tanger Properties Limited Partnership [Member]
Dec. 31, 2011
6.15% Senior Notes [Member]
Tanger Properties Limited Partnership [Member]
Dec. 31, 2011
3.75% Senior Exchangeable Notes [Member]
Tanger Properties Limited Partnership [Member]
Dec. 31, 2012
6.125% Senior Notes [Member]
Tanger Properties Limited Partnership [Member]
Dec. 31, 2010
6.125% Senior Notes [Member]
Tanger Properties Limited Partnership [Member]
Dec. 31, 2011
6.125% Senior Notes [Member]
Tanger Properties Limited Partnership [Member]
Dec. 31, 2012
Unsecured Term Loan [Member]
Tanger Properties Limited Partnership [Member]
Dec. 31, 2011
Unsecured Term Loan [Member]
Tanger Properties Limited Partnership [Member]
Sep. 30, 2011
Line of Credit [Member]
Tanger Properties Limited Partnership [Member]
Dec. 31, 2012
Line of Credit [Member]
Tanger Properties Limited Partnership [Member]
Dec. 31, 2011
Line of Credit [Member]
Tanger Properties Limited Partnership [Member]
Dec. 31, 2010
Line of Credit [Member]
Tanger Properties Limited Partnership [Member]
Dec. 31, 2012
Atlantic City Outlets The Walk [Member]
Tanger Properties Limited Partnership [Member]
Dec. 31, 2011
Atlantic City Outlets The Walk [Member]
Tanger Properties Limited Partnership [Member]
Sep. 30, 2011
Atlantic City Outlets The Walk [Member]
Tanger Properties Limited Partnership [Member]
Dec. 31, 2012
Ocean City Factory Outlets [Member]
Tanger Properties Limited Partnership [Member]
Dec. 31, 2011
Ocean City Factory Outlets [Member]
Tanger Properties Limited Partnership [Member]
Sep. 30, 2011
Ocean City Factory Outlets [Member]
Tanger Properties Limited Partnership [Member]
Dec. 31, 2012
The Outlets at Hershey [Member]
Tanger Properties Limited Partnership [Member]
Dec. 31, 2011
The Outlets at Hershey [Member]
Tanger Properties Limited Partnership [Member]
Sep. 30, 2011
The Outlets at Hershey [Member]
Tanger Properties Limited Partnership [Member]
Dec. 31, 2012
Notes Payable, Other Payables [Member]
Tanger Properties Limited Partnership [Member]
Dec. 31, 2011
Notes Payable, Other Payables [Member]
Tanger Properties Limited Partnership [Member]
Jun. 30, 2011
Bridge Loan [Member]
Tanger Properties Limited Partnership [Member]
Dec. 31, 2012
Debt [Member]
Unsecured Term Loan [Member]
Tanger Properties Limited Partnership [Member]
Dec. 31, 2012
Debt [Member]
Line of Credit [Member]
Tanger Properties Limited Partnership [Member]
Debt Instrument [Line Items]                                                                    
Debt Instrument, Interest Rate, Effective Percentage                                             5.05%     4.68%     3.40% 3.15%        
Senior Notes $ 548,033,000 $ 547,763,000     $ 548,033,000 $ 547,763,000     $ 250,000,000 $ 250,000,000   $ 300,000,000   $ 300,000,000                                        
Bridge Loan                                                               (150,000,000)    
Debt Instrument, Basis Spread on Variable Rate                                 1.90% 1.25%                           1.60%    
Unsecured lines of credit 178,306,000 357,092,000     178,306,000 357,092,000                       178,306,000 [1] 357,092,000 [1]                             178,300,000
Mortgages Payable                                         52,212,000 [2] 53,826,000 [2]   18,540,000 [2] 18,867,000 [2]   30,631,000 [2] 31,252,000 [2]            
Long-term Debt, Gross         1,089,689,000 1,021,037,000                                                        
Debt Instrument, Interest Rate Terms                 .0615     .06125 0.06125   LIBOR + 1.80%     LIBOR + 1.25%     5.14%-7.65%     0.0524     5.17%-8.00%     0.015        
Debt Instrument, Extended Maturity Date                                   Nov. 10, 2016                                
Line of Credit Facility, Commitment Fee Percentage                                 0.40% 0.25%                                
Debt Instrument, Face Amount                         300,000,000                                          
Line of Credit, Dividend Restrictions, Percentage of Funds From Operations Allowed on a Cumulative Basis                                   95.00%                                
Debt Instrument, Unamortized Discount         (3,848,000) (4,505,000)     317,000 417,000   1,650,000   1,820,000 0 [3] 0 [3]   0 [1] 0 [1]   (4,495,000) [2] (4,894,000) [2]   (285,000) [2] (375,000) [2]   (1,581,000) [2] (2,165,000) [2]   546,000 [2] 692,000 [2]      
Debt Instrument, Maturity Date                 Nov. 01, 2015     Jun. 01, 2020 Jun. 30, 2020   Feb. 23, 2019     Nov. 10, 2015           Jan. 06, 2016     Aug. 01, 2015     Jun. 30, 2016        
Debt Instrument, Pricing Percentage of Principal                         99.31%                                          
Long-term Debt 1,093,537,000 1,025,542,000     1,093,537,000 1,025,542,000                 250,000,000 [3] 0 [3]                           10,000,000 [2] 10,000,000 [2]   250,000,000  
Value of Bonds Exchanged for Common Shares                     7,200,000                                              
Number of Company Common Shares Issued Upon Exchange of Convertible Debt                     136,360                                              
Noncash or Part Noncash Acquisition, Debt Assumed           112,700,000                                                        
Debt Instrument, Interest Rate, Stated Percentage Rate Range, Minimum                                         5.14%           5.17%              
Debt Instrument, Interest Rate, Stated Percentage Rate Range, Maximum                                         7.65%           8.00%              
Line of Credit Facility, Maximum Borrowing Capacity                                     520,000,000 400,000,000                            
Maximum Line of Credit Borrowings That May Be Denominated in Foreign Currency                                     100,000,000                              
Unsecured Debt 259,453,000 9,308,000     259,453,000 9,308,000   235,000,000                                                    
Non-Cash Financing - Fair Value of Debt Assumed Adjustments           7,800,000                                                        
Line of Credit Facility, Liquidity Line, Maximum Borrowings, Included in Total Line of Credit Maximum Borrowings                                   20,000,000   15,000,000                            
Line of Credit Facility, Syndicataed Line, Maximum Borrowings, Included in Total Line of Credit Maximum Borrowings                                   500,000,000   385,000,000                            
Line of Credit Facility, Syndicated Line, Potential Maximum Borrowings if Accordian Feature is Utilized                                   750,000,000                                
Debt Instrument, Percentage Yield to Maturity                         6.219%                                          
Proceeds from Issuance of Long-term Debt 585,800,000 876,342,000 903,030,000   585,800,000 876,342,000 903,030,000           295,500,000                                          
Gain (Loss) on Derivative Instruments, Net, Pretax 0 0 (6,142,000)   0 0 (6,142,000)                                                      
Write off of Deferred Debt Issuance Cost       $ 563,000                                                            
[1] (3)Our unsecured lines of credit as of December 31, 2012 bear interest at a rate of LIBOR + 1.25% and expire on November 10, 2015. We have the option to extend the lines for one additional year to November 10, 2016. These lines require a facility fee payment of 0.25% annually based on the total amount of the commitment. The credit spread and facility fee can vary depending on our investment grade rating.
[2] (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%
[3] (2)Our unsecured term loan is pre-payable without penalty beginning in February of 2015.