Quarterly report pursuant to Section 13 or 15(d)

Debt of the Operating Partnership (Narrative) (Details)

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Debt of the Operating Partnership (Narrative) (Details)
 1 Months Ended 9 Months Ended
Apr. 30, 2015
USD ($)
Extension
Sep. 30, 2015
USD ($)
Jul. 01, 2015
USD ($)
Jun. 30, 2015
USD ($)
Dec. 31, 2014
USD ($)
Dec. 31, 2011
Tanger Properties Limited Partnership [Member]            
Debt Instrument [Line Items]            
Principal   $ 1,542,796,000     $ 1,446,830,000  
Tanger Properties Limited Partnership [Member] | Mortgages [Member]            
Debt Instrument [Line Items]            
Collateral for mortgages payable   604,100,000     602,700,000  
Tanger Properties Limited Partnership [Member] | Mortgages [Member] | Atlantic City Outlets The Walk [Member]            
Debt Instrument [Line Items]            
Effective interest rates           5.05%
Principal [1]   43,998,000     45,997,000  
Premium [1]   3,393,000     3,694,000  
Tanger Properties Limited Partnership [Member] | Mortgages [Member] | The Outlets at Hershey [Member]            
Debt Instrument [Line Items]            
Effective interest rates           3.40%
Principal   0 [1]   $ 29,000,000 29,271,000 [1]  
Premium   0 [1]   $ 201,000 399,000 [1]  
Tanger Properties Limited Partnership [Member] | Mortgages [Member] | Ocean City Factory Outlets [Member]            
Debt Instrument [Line Items]            
Effective interest rates           4.68%
Principal   0 [1] $ 17,600,000   17,827,000 [1]  
Premium   0 [1] $ 51,000   99,000 [1]  
Tanger Properties Limited Partnership [Member] | Notes Payable [Member]            
Debt Instrument [Line Items]            
Effective interest rates           3.15%
Principal [1]   10,000,000     10,000,000  
Tanger Properties Limited Partnership [Member] | Line of Credit [Member]            
Debt Instrument [Line Items]            
Line of credit, Maximum borrowing capacity   520,000,000        
Line of Credit Facility, Liquidity Line, Maximum Borrowings, Included in Total Line of Credit Maximum Borrowings   20,000,000        
Line of Credit Facility, Syndicated Line, Maximum Borrowings, Included in Total Line of Credit Maximum Borrowings   500,000,000        
Line of Credit Facility, Syndicated Line, Potential Maximum Borrowings if Accordion Feature is Utilized   $ 750,000,000        
Line of Credit, Dividend Restrictions, Percentage of Funds From Operations Allowed on a Cumulative Basis   95.00%        
Principal   $ 195,800,000     $ 111,000,000  
Minimum [Member]            
Debt Instrument [Line Items]            
Percent of guaranty of completion and principal guaranty   5.00%        
Maximum [Member]            
Debt Instrument [Line Items]            
Percent of guaranty of completion and principal guaranty   100.00%        
Southaven [Member]            
Debt Instrument [Line Items]            
Principal   $ 15,200,000        
Southaven [Member] | Mortgages [Member]            
Debt Instrument [Line Items]            
Line of credit, Maximum borrowing capacity $ 60,000,000          
Basis spread on variable rate 1.75%          
Number of mortgage extensions | Extension 1          
Term of mortgage extension 2 years          
Southaven [Member] | Minimum [Member]            
Debt Instrument [Line Items]            
Percent of guaranty of completion and principal guaranty   10.00%        
Southaven [Member] | Maximum [Member]            
Debt Instrument [Line Items]            
Percent of guaranty of completion and principal guaranty   50.00%        
Guaranty of mortgage, amount when fully funded   $ 30,000,000        
[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%, Hershey 3.40%, Ocean City 4.68%, and note payable 3.15%.